JP2008144716A - Moisture separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress generation of erosion while suppressing increase in manufacturing cost and deterioration in performance to elongate a service life, in a moisture separator. <P>SOLUTION: A heating tube group 44 is inserted from one end part in a longitudinal direction of a drum body 40, a steam inlet chamber S<SB>5</SB>is defined by a partition wall 47 at the other end part thereof, and a steam inlet 41 is formed to flow low temperature reheat steam into the steam inlet chamber S<SB>5</SB>. A moisture separating element 50 is supported by a first support plate 49, a steam passage S<SB>1</SB>having outlet 64 is divided by each of support plates 49, 58, 59, 60 to connect the steam passage S<SB>1</SB>with the steam inlet chamber S<SB>5</SB>, and the moisture can be separated from the steam blown from the outlet 64 by the moisture separating element 50. A erosion-resistant buffer plate 65 with which the steam led to the inside is collided is opposed to the steam inlet 41 in the steam inlet chamber S<SB>5</SB>. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a moisture separator that removes moisture from steam, and is particularly suitable for application to a nuclear power plant or the like.

  For example, in a pressurized water nuclear power plant, light water is used as a reactor coolant and a neutron moderator in a nuclear reactor, and is converted into high-temperature and high-pressure water that does not boil over the entire core. Steam is generated by exchange, and the steam is sent to a turbine generator to generate electricity. And this pressurized water reactor transmits the heat | fever of high temperature high pressure primary cooling water to secondary cooling water via a steam generator, and generates water vapor | steam with secondary cooling water. In addition, the steam generator is configured such that primary cooling water flows inside a large number of thin heat transfer tubes, heat is transferred to the secondary cooling water flowing outside, and steam is generated, and this steam is supplied to the turbine generator. .

  On the other hand, this turbine generator includes a steam turbine having a high-pressure turbine and a low-pressure turbine, and a generator that generates electric power from the output of the steam turbine. In this case, a moisture separator is generally provided between the high-pressure turbine and the low-pressure turbine. The moisture separator separates moisture contained in the low-pressure steam discharged from the high-pressure turbine, and reheats the low-pressure steam to supply it to the low-pressure turbine as superheated steam. Is reduced to prevent erosion and to improve the thermal efficiency of the turbine plant.

  FIG. 14 is a schematic view showing a conventional moisture separator, and FIG. 15 is a longitudinal sectional view of the conventional moisture separator.

  In the conventional moisture separator, as shown in FIGS. 14 and 15, a cylindrical body 001 has a heating pipe 002 inserted from one end and a steam inlet 003 formed at the other end. 003 communicates with two manifolds 005 located on both sides of the heating pipe 002 in the body 001 via the inflow chamber 004. The high-pressure heating steam from the steam generator is supplied to the heating pipe 002, while the low-temperature reheat steam containing moisture from the high-pressure turbine is supplied to each manifold 005 through the steam inlet 003, Steam can be blown into the body 001 from a large number of outlets 006 formed in the above.

  A horizontal partition bottom plate 007 is fixed to the lower part of the body 001, and moisture separation elements 008 are fixed on the partition bottom plate 007 corresponding to each manifold 005. Further, a drain passage 009 is formed below the partition bottom plate 007, and a drain outlet 010 for discharging drain (moisture) of the drain passage 009 is formed in the body 001.

  A partition side plate 011 is fixed to the upper part of each moisture separation element 008, and the heating tube 002 described above is positioned between the partition side plates 011. A steam outlet 012 for discharging steam from which moisture has been separated is formed in the upper body 001. The high-temperature reheat steam discharged from the steam outlet 012 is sent to the low-pressure turbine.

  Accordingly, the low-temperature reheat steam from the high-pressure turbine flows into the inflow chamber 004 from the steam inlet 003, blows out from the large number of outlets 006 into the body 001 through each manifold 005, and is guided by the inner wall surface to each humidity. Introduced into the separation element 008. Then, when the vapor passes through the moisture separation element 008, the moisture is separated by colliding with the separator vane. Then, the steam from which the moisture has been separated rises between the partition side plates 011 and is heated by contacting the heating pipe 002, and is discharged from the steam outlet 012 as high-temperature reheated steam. On the other hand, the moisture separated by the moisture separation element 008 flows down to the drain passage 009 and is discharged from the drain outlet 010 to the outside.

  As such a moisture separator, there is one described in Patent Document 1 below.

Japanese Patent Laid-Open No. 2002-130609 (Patent Document 1 was not presented by hearing, but changed to a patent document of a moisture separation heater of the same type as that described in the background art above.)

  By the way, in the moisture separator described above, the low-temperature reheat steam containing droplets (humidity) flows into the two manifolds 005 from the steam inlet 003 via the inflow chamber 004, and a large number of outlets 006 in each manifold 005. Are blown into the body 001, and moisture is separated by each moisture separation element 008. In this case, the low-temperature reheated steam flows from the steam inlet 003 through the inflow chamber 004 and flows into the two manifolds 005 at a high speed, so that the warm reheated steam flows from the inflow chamber 004 into each manifold 005. There is a problem in that it collides with the inner surface of the manifold 005 at an angle close to vertical, erosion (erosion) occurs, and durability deteriorates.

  Conventionally, in order to prevent the erosion of the manifold 005, the manifold 005 is made of a material (such as stainless steel) having excellent erosion resistance. However, the cost increases. Further, it is conceivable to rectify the steam flowing into the inflow chamber 004 from the steam inlet 003 and then introduce it into the manifold 005. However, there is a problem that the pressure loss increases and the performance is deteriorated.

  This invention solves the subject mentioned above, and it aims at providing the moisture separator which suppresses generation | occurrence | production of erosion and makes it possible to extend a lifetime, suppressing the increase in manufacturing cost or a performance fall. To do.

  In order to achieve the above object, a moisture separator according to a first aspect of the present invention includes a hollow body, an inflow chamber defined by a partition wall at one longitudinal end of the body, and an inflow chamber. A steam inlet for introducing steam containing moisture, a steam passage provided inside the fuselage and having one end communicating with the inflow chamber, and having a plurality of outlets for blowing steam into the fuselage, and the fuselage A moisture separation element that separates moisture by the passage of steam blown out from the blow-out port, and moisture is separated by the moisture separation element that is provided in the upper part of the fuselage A moisture separator comprising: a steam outlet for discharging steam; and a drain outlet provided at a lower part of the body and configured to discharge moisture separated from the steam by the moisture separation element. Opposite the entrance It is characterized in that the steam introduced into the interior is provided with the impact receiving member having a corrosion resistance to collision Te.

  In the moisture separator according to a second aspect of the present invention, the steam passage is provided on both sides of the body, and the impact receiving member is provided between the communication opening of the steam passage with the inflow chamber. It is characterized by that.

  In the moisture separator according to claim 3, the outer diameter of the impact receiving member is set larger than the inner diameter of the steam inlet, and the distance between the impact receiving member and the steam inlet is set to be equal to or larger than the inner diameter of the steam inlet. It is characterized by being.

  The moisture separator according to a fourth aspect of the invention is characterized in that a vapor diffusion member is provided in a communication opening with the inflow chamber in the vapor passage.

  The moisture separator according to claim 5 is characterized in that a wear-resistant member is provided in a region having an equivalent diameter from the communication opening on the inner surface of the steam passage on the inflow chamber side.

  In a moisture separator according to a sixth aspect of the present invention, a wear-resistant member is provided around the plurality of outlets in the steam passage.

  The moisture separator according to claim 7 is characterized in that a moisture collecting member for collecting moisture in the steam is provided on the surface of the partition wall on the inflow chamber side.

  The moisture separator according to an eighth aspect of the present invention is characterized in that a moisture collection member for collecting moisture in the steam is provided on the inner peripheral surface on the inflow chamber side.

  In the moisture separator according to the ninth aspect of the invention, the steam passages are provided on both sides of the body, and the moisture separation elements are provided corresponding to the steam passages, respectively, in the longitudinal direction of the body. A heating pipe is inserted between each steam passage from the other end, and the steam blown out from the outlet of each steam passage passes through each moisture separation element so that moisture is removed. The steam from which the water is removed contacts the heating pipe and is heated, and then flows to the steam outlet.

  According to the moisture separator of the first aspect of the invention, the inflow chamber is defined by the partition wall at one end in the longitudinal direction of the hollow body, and the steam inlet for introducing the steam containing moisture into the inflow chamber. A moisture separation element that separates moisture by providing a steam passage having a plurality of outlets in the fuselage, communicating one end with the inflow chamber, and passing steam blown from the outlet; An impact receiving member having erosion resistance is provided in the inflow chamber so as to collide with the steam introduced into the inflow chamber facing the steam inlet.

  Therefore, the steam containing moisture flows into the inflow chamber from the steam inlet, flows into the steam passage from the inflow chamber, is blown into the fuselage from a number of outlets, and passes through the moisture separation element. The moisture is separated and the steam from which the moisture has been separated is discharged from the steam outlet, while the moisture is discharged from the drain outlet. At this time, the steam that has flowed into the inflow chamber from the steam inlet collides with the receiving member having erosion resistance, and then flows so as to bypass the receiving member and flows into the steam passage. As the flow velocity of the gas decreases, this steam smoothly flows into the steam passage from the inflow chamber, and it is possible to extend the life by suppressing the generation of erosion while suppressing the increase in manufacturing cost and the performance. As a result, the moisture separation performance can be improved.

  According to the moisture separator of the second aspect of the present invention, the steam passage is provided on both sides of the fuselage, and the impact receiving member is provided between the communication opening with the inflow chamber in the steam passage. After the steam that has flowed into the chamber collides with the impact receiving member, the steam flows so as to bypass the impact receiving member, so that the flow of the steam becomes substantially parallel to the steam passage and then flows into the steam passage. As a result, since the steam smoothly flows into the steam passage, generation of erosion can be effectively suppressed.

  According to the moisture separator of the invention of claim 3, the outer diameter of the impact receiving member is set larger than the inner diameter of the steam inlet, and the distance between the impact receiving member and the steam inlet is set to be equal to or larger than the inner diameter of the steam inlet. By appropriately setting the size and position of the impact receiving member in the inflow chamber, the flow of the steam flowing into the inflow chamber from the steam inlet can be corrected to an appropriate flow by the impact receiving member.

  According to the moisture separator of the invention of claim 4, since the steam diffusion member is provided in the communication opening with the inflow chamber in the steam passage, the steam flowing into the inflow chamber from the steam inlet collides with the impact receiving member, Passing through the vapor diffusion member and flowing into the vapor passage, the vapor flowing into the vapor passage is diffused throughout the vapor passage by the vapor diffusion member, so that the flow velocity can be reduced and erosion is effectively generated. Can be suppressed.

  According to the moisture separator of the fifth aspect of the present invention, since the wear-resistant member is provided on the inner surface of the steam passage on the inflow chamber side in the region having the equivalent diameter from the communication opening, the steam is introduced from the steam inlet through the inflow chamber. The steam flowing into the passage collides with the wear resistant member, and erosion of the steam passage can be suppressed.

  According to the moisture separator of the sixth aspect of the invention, since the wear-resistant member is provided around the plurality of outlets in the steam passage, the steam flowing into the steam passage from the steam inlet through the inflow chamber has a large number of blowers. Although it is blown out from the outlet into the fuselage, a part of the steam collides with the wear-resistant member around the outlet, and the occurrence of erosion in the steam passage can be suppressed.

  According to the moisture separator of the invention of claim 7, since the moisture collecting member for collecting moisture in the steam is provided on the surface of the partition wall on the inflow chamber side, the steam flowing into the inflow chamber from the steam inlet is By colliding with the moisture collecting member on the surface of the partition wall, the moisture in the steam is collected by the moisture collecting member, and the moisture separation performance is improved by suppressing the re-scattering of the moisture. be able to.

  According to the moisture separator of the eighth aspect of the invention, since the moisture collecting member for collecting the moisture in the steam is provided on the inner peripheral surface on the inflow chamber side, the steam flowing into the inflow chamber from the steam inlet flows into the inflow chamber. By colliding with the moisture collecting member on the inner peripheral surface on the chamber side, moisture in the steam is collected by this moisture collecting member, and moisture separation performance is suppressed by suppressing re-scattering of moisture. Can be improved.

  According to the moisture separator of the ninth aspect of the invention, the steam passages are provided on both sides of the fuselage, the moisture separation elements are provided corresponding to the respective steam passages, and each of the other ends from the other end in the longitudinal direction of the fuselage. A heating pipe is inserted between the steam passages, and the steam blown out from the outlet of each steam passage passes through each moisture separation element to remove moisture, and the steam from which moisture has been removed is put into the heating pipe. Since it is made to contact and heat and then flow to the steam outlet, it is possible to efficiently flow the steam into the fuselage to properly separate the moisture, and to effectively use the steam.

  Exemplary embodiments of a moisture separator according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited by this Example.

  FIG. 1 is a longitudinal sectional view of a steam inflow portion in a moisture separator according to Example 1 of the present invention, FIG. 2 is a front view of the steam inflow portion in the moisture separator of Example 1, and FIG. FIG. 4 is a schematic cross-sectional view illustrating a moisture separator according to the first embodiment, and FIG. 5 is a cutaway perspective view illustrating the internal structure of the moisture separator according to the first embodiment. FIG. 6 is a schematic configuration diagram of a power plant to which the moisture separator according to the first embodiment is applied.

  The power plant according to the first embodiment uses, for example, light water as a reactor coolant and a neutron moderator, and generates high-temperature and high-pressure water that does not boil over the entire core. It can be applied to a pressurized water reactor (PWR) that generates and sends this steam to a turbine generator to generate electricity, or an improved pressurized water reactor (APWR) that improves on this. However, it can be applied to other power plants.

  That is, in the power plant of this embodiment, as shown in FIG. 6, the steam generator 11 is connected to the steam turbine 12 via the cooling water pipe 13, and the steam turbine 12 includes the high-pressure turbine 14 and the low-pressure turbine. 15 and a generator 16 is connected. A moisture separator 17 is provided between the high-pressure turbine 14 and the low-pressure turbine 15, and the high-pressure turbine 14 and the moisture separator 17 are connected by a low-temperature reheat pipe 18. The low pressure turbine 15 is connected by a high temperature reheat pipe 19. Further, the steam turbine 12 has a condenser 20 and is connected to the steam generator 11 via a cooling water pipe 21, and a condensate pump 22 is provided in the cooling water pipe 21. .

  Accordingly, the steam generated by exchanging heat with high-pressure and high-temperature light water in the steam generator 11 is sent to the steam turbine 12 (from the high-pressure turbine 14 to the low-pressure turbine 15) through the cooling water pipe 13, and the steam is generated by the steam. The turbine 12 is driven to generate power by the generator 16. In this case, after the steam from the steam generator 11 drives the high-pressure turbine 14, moisture contained in the steam is removed and heated by the moisture separator 17, and then the low-pressure turbine 15 is driven. The steam that has driven the steam turbine 12 is cooled by the condenser 20 and then returned to the steam generator 11 through the cooling water pipe 21.

  In the moisture separator 17 of the above-described embodiment, as shown in FIGS. 3 to 5, the body 40 has a horizontal hollow cylindrical shape, one end is closed, and the other end includes moisture. A steam inlet 41 for introducing steam (low-temperature reheated steam) is formed, and a steam outlet 42 for discharging steam (high-temperature reheated steam) separated from moisture is formed at the upper part, while a lower part is formed. A drain outlet 43 for discharging moisture (drain) separated from the steam is formed. As shown in FIG. 6, the steam inlet 41 is connected to the high-pressure turbine 14 via the low-temperature reheat pipe 18, and the steam outlet 42 is connected to the low-pressure turbine 15 via the high-temperature reheat pipe 19, and the drain outlet 43 Is connected to a drain tank via a drain pipe (not shown).

  As shown in FIGS. 3 to 5, the body 40 has a heating tube group 44 inserted through one end in the longitudinal direction thereof. The heating tube group 44 includes a steam chamber 45 located outside the body 40, and a plurality of U-shaped heating tubes 46 extending from the steam chamber 45 into the body 40. The plurality of heating tubes 46 are supported by a pair of partition walls 47 and 48 fixed inside the body 40. The steam chamber 45 is divided into upper and lower parts, and a pipe branched from the cooling water pipe 19 of the steam generator 13 is connected to an upper inlet nozzle 45a to which one ends of the plurality of heating pipes 46 are connected. On the other hand, a drain pipe extending to the drain tank is connected to a lower outlet nozzle 45b to which the other ends of the plurality of heating pipes 46 are connected.

A horizontal first support plate 49 is fixed to the lower portion of the body 40, and a pair of left and right moisture separation elements 50 are provided on both sides of the first support plate 49, and this moisture separation is performed. The element 50 can separate moisture by the passage of steam. That is, the moisture separation element 50 is configured to be supported by the upper and lower support frames 52 and 53 in a state where a large number of corrugated separator vanes 51 are stacked at a predetermined interval. In this embodiment, the lower support frame 53 is integrally fixed to both side portions of the first support plate 49, by being fixed to the inner wall surface of the body 40 is partitioned is drain passage S ₄ to be described later, the drain outlet 43 as described above under the drain passage S ₄ are provided.

  Although the moisture separation element 50 described above is disposed along the longitudinal direction of the body 40, two moisture separation element units 50 a are provided by the maintenance space 55 on one end side in the longitudinal direction of the body 40. , 50b. Each moisture separation element 50a, 50b is supported by a plurality of jack bolts 56 interposed therebetween.

  In the moisture separating element 52, as described above, a plurality of corrugated separator vanes 51 are stacked at predetermined intervals and supported by upper and lower support frames 52 and 53, and steam is supplied to the plurality of separator vanes. By passing between 52, moisture contained in this vapor collides and is separated. Therefore, a drain opening 57 for discharging moisture (drain) separated from the steam is formed in the lower support frame 53.

  In addition, a pair of left and right second support plates 58 are erected on the upper part of each moisture separation element 50, extend upward along the vertical direction on both sides of the heating tube group 44, and have an upper end portion on the body 40. On the other hand, the lower end portion is connected to the upper support frame 53. Further, a horizontal third support plate 59 is installed between the upper side of each second support plate 58 and the body 40, and the lower side of each side of the second support plate 58 is connected to the body 40. A fourth support plate 60 that is substantially horizontal and the body 40 side is slightly inclined downward is provided between the first and second support plates 60. In this case, the respective end portions in the longitudinal direction of the second, third, and fourth support plates 58, 59, 60 are fixed to the partition walls 47, 48. The heating tube group 44 is covered with an outer tube 61 whose side portions are opened up and down, and a tip portion is covered with a cover 62. The outer tube 61 is supported by a plurality of support walls 63 as a second support. Supported by the plate 58, the cover 62 is fixed to the partition wall 47.

Therefore, the internal space of the fuselage 40 includes steam passages S ₁ located on both sides of the heating tube group 44 defined by the second, third, and fourth support plates 58, 59, and 60, and the first and fourth support plates. 49, 60 and the steam flow space S ₂ defined by the moisture separation element 50, the steam discharge space S ₃ defined by the first and second support plates 49, 58 and the moisture separation element 50, and the first support. It is divided into a drain passage S ₄ defined by the plate 49 and the moisture separation element 50.

Further, a steam inflow chamber S ₅ is formed in the internal space of the body 40 by a partition wall 47, and a steam inlet 41 communicates with the steam inflow chamber S ₅ , and one end portion of the steam passage S ₁ is partitioned. The communication is made through a communication opening 47 a formed in the wall 47. Note that the other end of the steam passage S ₁ is closed by a partition wall 48. Further, the fourth support plate 60 is formed with a plurality of outlets 64 along the longitudinal direction thereof, and the steam passage S ₁ and the steam flow space S ₂ are communicated with each other by the plurality of outlets 50.

Further, in the moisture separator 17 of the present embodiment, an erosion-resistant shock-receiving plate (shock-receiving) in which the steam introduced into the steam inlet chamber S ₅ of the body 40 faces the steam inlet 41 and collides with the steam inlet chamber S _5. Member) 65 is provided. The impact receiving plate 65 has a disc shape and is formed of stainless steel having erosion resistance. Cover The impact receiving plate 65, at the steam inlet chamber S _5, during each communication opening 47a in the steam passage S ₁ in the right and left, are located with a predetermined gap from the partition wall 47, by four stay 62 is supported.

Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65, and then flows on the outer peripheral side so as to bypass the impact receiving plate 65. will flow into the S _1, the inflow wherein, with a flow rate of the steam in the steam inflow chamber S ₅ is reduced, the flow of this vapor becomes substantially parallel to the steam passage S ₁ smoothly into the steam passage S ₁ To do.

  Here, the operation of moisture separation by the moisture separator 17 of the present embodiment will be described in detail with reference to FIGS.

  In the moisture separation by the moisture separator 17 of the present embodiment, as shown in FIG. 6, the heated steam generated by the steam generator 13 is sent to the high-pressure turbine 20 constituting the steam turbine 18 through the cooling water pipe 19. And sent to the moisture separator 17. The low-temperature reheat steam that has driven the high-pressure turbine 20 is sent to the moisture separator 17 through the low-temperature reheat pipe 34, where moisture contained in the steam is removed and heated to become high-temperature reheat steam. And sent to the low-pressure turbine 21 through the high-temperature reheat pipe 33.

  In the moisture separator 17, as shown in FIGS. 3 to 5, the heating steam generated by the steam generator 13 is supplied from the inlet nozzle 45 a of the steam chamber 45 to the heating tube group 44, and is entered into the body 40. The steam is returned to the steam chamber 45 through the plurality of heating pipes 46 and is discharged as drainage from the outlet nozzle 45b.

On the other hand, the low-temperature reheated steam from the high-pressure turbine is supplied from the steam inlet 41 through the steam inlet chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. The The steam blown into the steam flow space S ₂ of the body 40 is guided to each moisture separation element 50 along the inner wall surface. Then, in the moisture separation element 50, the steam passes between the plurality of separator vanes 51 having a waveform, and moisture contained in the steam collides with the separator vane 51, thereby forming a drain. To be separated.

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ defined by the left and right second support plates 58 and passes between the plurality of heating tubes 46. In addition, it is heated by the heating steam passing through each heating pipe 46, becomes high-temperature reheated steam, and is discharged from the steam outlet 42. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, the impact receiving member 65 having erosion resistance is collided with the steam introduced into the steam inflow chamber S ₅ of the body 40 facing the steam inlet 41. Provided. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1.

  Although the impact receiving member 65 is formed of a member such as stainless steel having erosion resistance, the cover 62 and the partition wall 47 are preferably formed of a member such as stainless steel having erosion resistance.

As described above, in the moisture separator 17 according to the first embodiment, the heating tube group 44 is inserted from one end in the longitudinal direction of the body 40, and the steam inflow chamber S ₅ is partitioned by the partition wall 47 at the other end. In addition, a steam inlet 41 through which the low-temperature reheated steam flows into the steam inlet chamber S ₅ is provided, the moisture separation element 50 is supported by the first support plate 49, and the outlets are supported by the respective support plates 49, 58, 59, 60. A steam passage S ₁ having 64 is defined so as to communicate with the steam inflow chamber S _5, and the moisture separation element 50 is configured to be able to separate moisture from the steam blown from the outlet 64, and the steam inflow chamber S _5. Further, an impact plate 65 having an erosion resistance against which the steam introduced inside faces the steam inlet 41 is provided.

Therefore, the steam containing moisture flows into the steam inflow chamber S ₅ from the steam inlet 41, flows into the steam passage S ₁ from the steam inflow chamber S _5, and the steam flow space of the body 40 from the numerous outlets 64. The moisture is separated by blowing out to S ₂ and passing through the moisture separation element 50, and the vapor from which the moisture has been separated is discharged from the vapor outlet 42 through the vapor discharge space S _3. Flows down from the drain opening 57 to the drain passage S ₄ and is discharged from the drain outlet 43. At this time, the steam that has flowed into the steam inflow chamber S ₅ from the steam inlet 41 collides with the impact receiving plate 65 and then flows around the impact receiving plate 65 to flow into the steam passage S _1. with the flow rate of the steam is reduced in the inflow chamber S _5, the steam is able to flow into the steam passage S ₁ smoothly from the steam inlet chamber S _5.

As a result, the steam does not collide with the inner surface of the body 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 at a substantially vertical angle, and smoothly flows into the steam passage S _1. As a result, the generation of erosion can be suppressed and the life can be extended. In addition, since at least the shock-receiving plate 65 is made of an erosion-resistant material, the body 40 and the support plates 58, 59, 60 can be manufactured from inexpensive carbon steel, thereby suppressing an increase in manufacturing cost. can do. Further, it is possible to suppress the performance degradation due to the pressure loss generated by adding the rectifying means and the like, and to improve the moisture separation performance.

In the present embodiment, the steam passage S ₁ is formed on both sides of the body 40, and the impact plate 65 is provided between the communication opening 47 a with the steam inflow chamber S ₅ in the steam passage S ₁ . . Thus, steam flowing from the steam inlet 41 to the steam inlet chamber S _5, after colliding with the impact receiving plate 65, it flows so as to bypass the impact receiving plate 65, the flow of the steam and the steam passage S ₁ will be flowing from becoming substantially parallel flow to the steam passage S _1, the steam that flows into the steam passage S ₁ smoothly, it is possible to effectively suppress the occurrence of erosion.

  FIG. 7 is a longitudinal sectional view of a steam inflow portion in the moisture separator according to the second embodiment of the present invention. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the second embodiment, as shown in FIG. 7, an erosion-resistant receiving shock that the steam introduced into the steam inflow chamber S ₅ of the body 40 facing the steam inlet 41 collides with the steam inlet chamber S _5. A plate 65 is provided. The receiving plate 65 has a disk shape and is supported on the cover 62 by four stays 66. The outer diameter D2 of the impact receiving plate 65 is larger than the inner diameter D1 of the steam inlet 41, and is preferably set to twice the inner diameter D1 of the steam inlet 41. Further, the distance L between the shock receiving plate 65 and the steam inlet 41 is not less than the inner diameter D1 of the steam inlet 41, and preferably greater than 1.75 times the inner diameter D1 of the steam inlet 41 in view of the influence of pressure loss and the like. Is set.

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIG. 7, the steam introduced into the steam inlet chamber S ₅ of the body 40 facing the steam inlet 41 collides with the steam inlet chamber S _{5 at} a predetermined position. The impact receiving member 65 having erosion resistance is provided in a predetermined size. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1.

As described above, in the moisture separator 17 of the second embodiment, the impact receiving plate 65 having erosion resistance in which the steam introduced into the steam inflow chamber S ₅ is opposed to the steam inlet 41 is provided. And the outer diameter D2 of the impact receiving plate 65 is set larger than the inner diameter D1 of the steam inlet 41, preferably twice the inner diameter D1 of the steam inlet 41, and the distance L between the impact receiving plate 65 and the steam inlet 41 is set. The inner diameter D1 of the steam inlet 41 is set to be equal to or larger than 1.75 times the inner diameter D1 of the steam inlet 41, preferably.

Therefore, since the receiving plate is appropriately sized with respect to the steam inlet 41 and provided at an appropriate position, steam containing moisture flows into the steam inflow chamber S ₅ through the steam inlet 41. when, by flowing from collides with the impact receiving plate 65 so as to bypass the impact receiving plate 65 and flows into the steam passage S _1, along with the steam flow rate is reduced in the steam inlet chamber S _5, the The steam smoothly flows from the steam inflow chamber S ₅ into the steam passage S ₁ , and the steam is almost perpendicular to the inner surface of the body 40 and the flat portions of the support plates 58, 59, 60 constituting the steam passage S _1. such angle with rather than collide, by flowing smoothly into the steam passage S _1, it is possible to suppress the occurrence of erosion can the life of. In this case, the body 40 and the support plates 58, 59, 60 can be made of inexpensive carbon steel by using at least the impact plate 65 as a material having erosion resistance. Can be suppressed.

  FIG. 8 is a front view of a steam inflow portion in the moisture separator according to the third embodiment of the present invention. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the third embodiment, as shown in FIG. 8, the internal space of the body 40 is located on both sides of the heating tube group 44 by the second, third, and fourth support plates 58, 59, and 60. A pair of left and right steam passages S ₁ are partitioned, and a steam inflow chamber S ₅ is partitioned by a partition wall 47. A steam inlet 41 communicates with the steam inflow chamber S ₅ , and each steam passage S ₁ One end portion communicates with the communication opening 47a. In addition, an impingement plate 65 having erosion resistance against which steam introduced into the steam inflow chamber S ₅ faces the steam inlet 41 is provided. The receiving plate 65 has a disk shape and is supported on the cover 62 by four stays 66. The opening into the steam inlet chamber S ₅ in each steam passage S _1, that is, wire mesh 71 as a vapor diffusion member is fixed to the communication opening 47 between the steam inflow chamber S ₅ in the steam passage S _1. The wire mesh 71 is formed by knitting a large number of thin wires in a lattice shape, and a large number of through-holes formed by a large number of wires so that the flow resistance coefficient of steam passing through the wire mesh 71 is reduced. The diameter is set.

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIG. 8, an impact receiving member in which steam introduced into the steam inflow chamber S ₅ of the body 40 faces the steam inlet 41 and collides with the steam inlet chamber S _5. provided with a 65, it is provided with a wire mesh 71 in the communicating opening 47 of the steam inflow chamber S ₅ in each steam passage S _1. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1. Also, when the steam flows from the steam inlet chamber S ₅ to the steam passage S _1, by passing through the wire mesh 71, this steam reduces the flow rate spread with the steam path S _1, the inside of the steam passage S ₁ Smoothly flows. Further, when the vapor passes through the wire mesh 71, moisture contained in the vapor adheres to the wire mesh 71 as droplets, and moisture contained in the vapor is effectively removed.

As described above, in the moisture separator 17 of the third embodiment, the impact receiving plate 65 having erosion resistance in which the steam introduced into the steam inflow chamber S ₅ is opposed to the steam inlet 41. In addition, a wire mesh 71 is provided in the communication opening 47 with the steam inflow chamber S ₅ in the steam passage S ₁ .

Accordingly, when the vapor containing moisture flows into the vapor inflow chamber S ₅ through a steam inlet 41, the steam passage S ₁ flows from collides with the impact receiving plate 65 so as to bypass the impact receiving plate 65 by entering the, the flow rate of the steam in the steam inflow chamber S ₅ is reduced, the steam becomes possible to flow smoothly from the steam inlet chamber S ₅ to the steam passage S _1, also steam the steam inflow chamber S When flowing from ₅ into the steam passage S ₁ , it passes through the wire mesh 71, so that this steam diffuses in the steam passage S ₁ , the flow velocity decreases, and the steam passage S ₁ flows smoothly. Does not collide with the inner surface of the barrel 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle, and smoothly flows into the steam passage S ₁ , Prolongs life by suppressing erosion Can be possible. Further, when the steam passes through the wire mesh 71, the moisture contained in the steam adheres to the wire mesh 71 as droplets, effectively removing the moisture contained in the steam, and the moisture separation element 50 burdens can be reduced.

  In addition, in this Example 3, although the wire mesh 71 as a vapor | steam diffusion member was applied, it is not limited to this, For example, another hole plate may be sufficient.

  FIG. 9 is a horizontal sectional view of a steam inflow portion in the moisture separator according to the fourth embodiment of the present invention. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the fourth embodiment, as shown in FIG. 9, the internal space of the body 40 is positioned on both sides of the heating tube group 44 by the second, third, and fourth support plates 58, 59, and 60. A pair of left and right steam passages S ₁ are partitioned, and a steam inflow chamber S ₅ is partitioned by a partition wall 47. A steam inlet 41 communicates with the steam inflow chamber S ₅ , and each steam passage S ₁ One end portion communicates with the communication opening 47a. In addition, an impingement plate 65 having erosion resistance against which steam introduced into the steam inflow chamber S ₅ faces the steam inlet 41 is provided. The receiving plate 65 has a disk shape and is supported on the cover 62 by four stays 66. A reinforcing pipe 72 as a wear-resistant member is provided on the inner surface of the steam passage S _{1 on} the steam inflow chamber S ₅ side in a region having an equivalent diameter from the communication opening 47a. The reinforcing tube 72 is formed by members such as stainless steel having a corrosion resistance, and is fixed by welding to the inner surface of the end portion of the steam passage S _1.

In this case, the equivalent diameter De is a representative length indicating how much the diameter of the flow path is equivalent to a set of circular pipes from the point of flow, and can be obtained from the following equation.
De = 4 Af / Wp
Af is the flow passage cross-sectional area of the steam passage S ₁ , Wp is the wet edge length (the length of the wall surface in the cross section, and assuming that the radius of the steam passage S ₁ is R, the equivalent diameter De = 2R Become.
De = 4πR ² / 2πR = 2R

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIG. 9, the impact receiving member in which the steam introduced into the steam inflow chamber S ₅ of the body 40 facing the steam inlet 41 collides with the steam inflow chamber S _5. provided with a 65, it is provided stiffening tube 72 from the communicating opening 47a to the inner surface of the steam inlet chamber S ₅ side length of the region of the equivalent diameter of the steam path S _1. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1. Even if a part of the steam bypassing the impact receiving member 65 collides with the inner surface of the inlet portion of the steam passage S _{1 at} a predetermined angle, the reinforcing pipe 72 is located here, so that the inner surface of the steam passage S ₁ The occurrence of erosion in is prevented.

As described above, in the moisture separator 17 of the fourth embodiment, the impact receiving plate 65 having erosion resistance with which the steam introduced into the steam inflow chamber S ₅ is opposed to the steam inlet 41 is provided. In addition, a reinforcing pipe 72 is provided on the inner surface of the steam passage S _{1 on} the steam inflow chamber S ₅ side in a region having an equivalent diameter from the communication opening 47a.

Accordingly, when the vapor containing moisture flows into the vapor inflow chamber S ₅ through a steam inlet 41, the steam passage S ₁ flows from collides with the impact receiving plate 65 so as to bypass the impact receiving plate 65 by entering the configuration with the flow rate of the steam in the steam inflow chamber S ₅ is reduced, the steam becomes possible to flow smoothly from the steam inlet chamber S ₅ to the steam passage S _1, steam vapor passage S ₁ not collide with a substantially vertical angle to the plane of the inner surface and the support plates 58, 59, 60 of the body portion 40 which, by flowing smoothly into the steam passage S _1, to suppress the occurrence of erosion Long life can be achieved. Even if a part of the steam bypassing the impact receiving member 65 collides with the inner surface of the inlet portion of the steam passage S _{1 at} a predetermined angle, the reinforcing pipe 72 is located here, so that the inner surface of the steam passage S ₁ It is possible to prevent the occurrence of erosion.

  FIG. 10 is a longitudinal sectional view of a moisture separator according to Embodiment 5 of the present invention. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the second embodiment, as shown in FIG. 10, a heating tube group 44 is disposed at the upper center of the body 40, and a horizontal first support plate 49 is fixed to the lower part of the body 40. A pair of left and right moisture separation elements 50 are provided on the first support plate 49. A pair of left and right second support plates 58 is erected on the upper part of each moisture separation element 50, and the third support plate 59 and the second support plate 58 are vertically arranged between each second support plate 58 and the body 40. Four support plates 60 are installed. Therefore, the internal space of the body 40 is divided into a steam passage S ₁ , a steam flow space S ₂ , a steam discharge space S _3, and a drain passage S ₄ by the support plates 49, 58, 59, 60 and the moisture separation element 50. Has been. A steam inflow chamber S ₅ is formed at one end of the body 40 in the longitudinal direction by a partition wall 47, and a steam inlet 41 communicates with the steam inflow chamber S ₅ and one end of the steam passage S ₁ . The part communicates via a communication opening 47 a formed in the partition wall 47. Furthermore, a plurality of air outlets 64 are formed in the fourth support plate 60, and the steam passage S ₁ and the steam flow space S ₂ communicate with each other through the air outlets 50.

In this embodiment, a wire mesh 81 as a wear-resistant member is provided by a perforated plate 82 around the plurality of outlets 64 in the steam passage S ₁ . That is, the wire mesh 81 is obtained by rounding a thin wire, and is laid on the upper surface of the fourth support plate 60 so as to avoid the blowout holes 64, and the porous plate 82 is stacked from above. In this case, in the perforated plate 82, the diameters of a large number of through holes are set so that the flow resistance coefficient of the steam passing through the outlet 64 is low.

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIG. 10, a wire mesh 81 is provided by a porous plate 82 around the plurality of outlets 64 in the steam passage S ₁ . Accordingly, the steam containing moisture supplied into the body 40 flows into the steam passages S ₁ from the steam inflow chambers S ₅ and is blown out from the numerous outlets 64 to the steam flow space S ₂ . At this time, a part of the steam collides with the wire mesh 81 around the blower outlet 64, and the occurrence of erosion of the fourth support plate 60 is suppressed by reducing the collision force.

As described above, in the moisture separator 17 according to the fifth embodiment, the steam path S ₁ formed by the support plates 58, 59, and 60 is formed in the fourth support plate 60 and from the steam path S _1. around the plurality of air outlets 64 for supplying steam to the steam flow space S ₂ is provided with a wire mesh 81 by a perforated plate 82.

Therefore, the steam containing moisture supplied into the body 40 is blown out from the steam passage S ₁ through the numerous outlets 64 to the steam flow space S ₂ , and at this time, a part of the steam is blown out. Colliding with the wire mesh 81 around the outlet 64, where the collision force is reduced, the steam does not collide with the fourth support plate 60 at high speed, and the occurrence of erosion is suppressed. Can extend the service life.

  In addition, in Example 5 mentioned above, although the wire mesh 81 and the porous plate 82 as an abrasion-resistant member were applied, it is not limited to this, For example, a wire around the blower outlet 64 in the 2nd support plate 60 is used. Only the mesh 81 is fixed by welding or the like, only the porous plate 82 is fixed to the two support plates 60 by welding or the like, or stainless steel as a wear-resistant member is formed around the outlet 64 in the second support plate 60. A reinforcing plate made of may be fixed.

  FIG. 11 is a front view of a steam inflow portion in a moisture separator according to Embodiment 6 of the present invention. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the sixth embodiment, as shown in FIG. 11, the internal space of the body 40 is located on both sides of the heating tube group 44 by the second, third, and fourth support plates 58, 59, and 60. A pair of left and right steam passages S ₁ are partitioned, and a steam inflow chamber S ₅ is partitioned by a partition wall 47. A steam inlet 41 communicates with the steam inflow chamber S ₅ , and each steam passage S ₁ One end portion communicates with the communication opening 47a. In addition, an impingement plate 65 having erosion resistance against which steam introduced into the steam inflow chamber S ₅ faces the steam inlet 41 is provided. The receiving plate 65 has a disk shape and is supported on the cover 62 by four stays 66. The wire mesh 91 as moisture collecting member for collecting the moisture in the vapor to the steam inlet chamber S _5-side surface of the partition wall 37 is fixed. The wire mesh 91 is formed by knitting a large number of thin wires in a lattice shape.

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIG. 11, an impact receiving member in which steam introduced into the steam inflow chamber S ₅ of the body 40 facing the steam inlet 41 collides with the steam inflow chamber S _5. provided with a 65, it is provided with a wire mesh 91 to the surface of the steam inlet chamber S ₅ side of the partition wall 37. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1.

Further, when the steam bypasses the impact receiving member 65 and flows into the steam passage S ₁ , a part of the steam collides with the wire mesh 91 to reduce the flow velocity, and the moisture contained in the steam becomes droplets. The moisture adhering to the wire mesh 91 is effectively removed, and the droplets adhering to the wire mesh 91 flow downward along the partition wall 37, so that the droplets respray. Is prevented. Incidentally, the droplets adhering to the wire mesh 91 flows downwardly along the partition wall 37, and is discharged from the drain opening 43 from being stored in the body 40 as a drain through the drain passage S _4.

As described above, in the moisture separator 17 of the sixth embodiment, the impact receiving plate 65 having erosion resistance in which the steam introduced into the steam inflow chamber S ₅ is opposed to the steam inlet 41. A wire mesh 91 is provided on the surface of the partition wall 37 on the steam inflow chamber S ₅ side.

Accordingly, when the vapor containing moisture flows into the vapor inflow chamber S ₅ through a steam inlet 41, the steam passage S ₁ flows from collides with the impact receiving plate 65 so as to bypass the impact receiving plate 65 by entering the configuration with the flow rate of the steam in the steam inflow chamber S ₅ is reduced, the steam becomes possible to flow smoothly from the steam inlet chamber S ₅ to the steam passage S _1, steam vapor passage S ₁ not collide with a substantially vertical angle to the plane of the inner surface and the support plates 58, 59, 60 of the body portion 40 which, by flowing smoothly into the steam passage S _1, to suppress the occurrence of erosion Long life can be achieved. Further, when the steam bypasses the impact receiving member 65 and flows into the steam passage S ₁ , a part of the steam collides with the wire mesh 91 to reduce the flow velocity, and the moisture contained in the steam becomes droplets. It will adhere to the wire mesh 91, and the moisture contained in the steam can be effectively removed, and the burden on the moisture separation element 50 can be reduced.

  In addition, in this Example 6, although the wire mesh 91 as a moisture collection | recovery member was applied, it is not limited to this, For example, another hole plate may be sufficient.

  FIG. 12 is a horizontal sectional view of the steam inflow portion in the moisture separator according to the seventh embodiment of the present invention, and FIG. 13 is a front view of the steam inflow portion in the moisture separator of the seventh embodiment. The overall configuration of the moisture separator of the internal combustion engine of the present embodiment is substantially the same as that of the first embodiment described above, and will be described with reference to FIGS. 3 to 6 and the same as that described in this embodiment. The members having the above functions are denoted by the same reference numerals and redundant description is omitted.

In the moisture separator according to the seventh embodiment, as shown in FIGS. 12 and 13, the internal space of the body 40 is formed on both sides of the heating tube group 44 by the second, third, and fourth support plates 58, 59, and 60. A pair of left and right steam passages S ₁ are located and a steam inlet chamber S ₅ is partitioned by a partition wall 47, and a steam inlet 41 communicates with the steam inlet chamber S ₅ , and each steam passage _One end of S ₁ communicates with the communication opening 47a. In addition, an impingement plate 65 having erosion resistance against which steam introduced into the steam inflow chamber S ₅ faces the steam inlet 41 is provided. The receiving plate 65 has a disk shape and is supported on the cover 62 by four stays 66. The wire mesh 92 as moisture collecting member for collecting the moisture in the vapor on the inner peripheral surface in the steam inlet chamber S ₅ of the body 40 is fixed. The wire mesh 92 is formed a large number of thin wire in a curved band shape knitted in a lattice, close to the partition wall 37 from the second support plate 68 on either side of the steam inlet chamber S ₅ toward the first support plate 49 And fixed.

Therefore, as shown in FIGS. 3 to 5, the heating steam is supplied to the heating tube group 44 and is discharged as drain through a plurality of heating tubes 46 arranged in the body 40. On the other hand, the steam containing moisture is supplied from the steam inlet 41 through the steam inflow chamber S ₅ into the steam passage S ₁ and blown out from the numerous outlets 64 to the steam flow space S _{2 of the} body 40. Steam blown into the vapor flow space S ₂ of the body 40, by passing between the plurality of separators vanes 51 in each moisture separating element 50, the moisture contained in the steam is separated as a drain .

The steam from which moisture has been separated by the moisture separation element 50 rises through the steam discharge space S ₃ and passes through the heating pipes 46 when passing between the plurality of heating pipes 46. And is discharged from the steam outlet 42 as high-temperature reheated steam. On the other hand, the moisture (drain) separated from the steam by the moisture separation element 50 flows down to the drain passage S ₄ through the drain opening 57 and is discharged to the outside from the drain outlet 43.

At this time, in the moisture separator 17 of the present embodiment, as shown in FIGS. 12 and 13, the steam introduced into the steam inflow chamber S ₅ of the body 40 facing the steam inlet 41 collides with the steam inflow chamber S _5. The impact receiving member 65 is provided, and a wire mesh 92 is provided on the inner peripheral surface of the steam inflow chamber S ₅ of the body 40. Therefore, the steam that has flowed into the steam inflow chamber S ₅ of the body 40 from the steam inlet 41 collides with the impact receiving plate 65 and diffuses outward, and flows on the outer peripheral side so as to bypass the impact receiving plate 65. the flow into the respective steam passages S _1. Therefore, steam collides with the impact receiving member 65 and bypasses it, so that the flow velocity of the steam in the steam inflow chamber S ₅ is reduced and the flow of the steam is substantially parallel to the steam passage S ₁ . The steam does not collide with the inner surface of the steam passage S ₁ , for example, the inner surface of the trunk portion 40 constituting the steam passage S ₁ or the flat portions of the support plates 58, 59, 60 with a substantially vertical angle. It flows to smooth the passage S _1.

Further, when the steam bypasses the impact receiving member 65 and flows into the steam passage S ₁ , a part of the steam flows to the outside and collides with the wire mesh 92, thereby reducing the flow velocity, and moisture contained in the steam. Will adhere to the wire mesh 92 as droplets, and moisture contained in the vapor will be effectively removed, and the droplets adhering to the wire mesh 92 will travel downward along the inner surface of the body 40 and the partition wall 37. It will flow, preventing re-scattering of the droplets. The droplets adhering to the wire mesh 91 flow downward along the inner surface of the body 40 and the partition wall 37, are stored in the body 40 as drain, and then are discharged from the drain opening 43 through the drain passage S ₄ .

As described above, in the moisture separator 17 of the seventh embodiment, the impact plate 65 having erosion resistance in which the steam introduced into the steam inflow chamber S ₅ is opposed to the steam inlet 41. In addition, a wire mesh 92 for collecting moisture in the steam is provided on the inner peripheral surface of the steam inflow chamber S ₅ of the body 40.

Accordingly, when the vapor containing moisture flows into the vapor inflow chamber S ₅ through a steam inlet 41, the steam passage S ₁ flows from collides with the impact receiving plate 65 so as to bypass the impact receiving plate 65 by entering the configuration with the flow rate of the steam in the steam inflow chamber S ₅ is reduced, the steam becomes possible to flow smoothly from the steam inlet chamber S ₅ to the steam passage S _1, steam vapor passage S ₁ not collide with a substantially vertical angle to the plane of the inner surface and the support plates 58, 59, 60 of the body portion 40 which, by flowing smoothly into the steam passage S _1, to suppress the occurrence of erosion Long life can be achieved. Further, when the flowing steam to bypass the impact receiving member 65 to the steam passage S _1, a portion of the steam is lowered flow velocity by impacting the wire mesh 92, as moisture droplets contained in the steam It will adhere to the wire mesh 92, effectively removing moisture contained in the steam, and reducing the load on the moisture separation element 50.

  In addition, in this Example 7, although the wire mesh 92 as a moisture collection | recovery member was applied, it is not limited to this, For example, another hole plate may be sufficient.

Further, in each of the above-described embodiments, the receiving plate 35 is fixed to the cover 62 of the heating tube group 44 fixed to the partition wall 47 by the stay 63, but may be directly fixed to the partition wall 47. The shape of the impact receiving plate 35 is not limited to the disk shape, it may be an square or rectangular, also the steam from the steam inlet 41 so as to properly flow into the steam passage S _1, the surface It may be a curved shape.

Moreover, although the moisture separator of the present invention has been described as a moisture separator / heater having a heating tube, a moisture separator that does not have the heating tube group 44 in the body 40 may be used. Further, in each of the above-described embodiments, the moisture separator of the present invention has the two steam passages S ₁ defined by fixing the support plates 58, 59, 60 in the body 40. There may be more than one. Furthermore, a steam passage may be formed by inserting a manifold into the body.

  The moisture separator according to the present invention suppresses the generation of erosion while suppressing an increase in manufacturing cost and a decrease in performance, and enables a long life, and is applied to a moisture separator in various plants. be able to.

It is a longitudinal cross-sectional view of the steam inflow part in the moisture separator which concerns on Example 1 of this invention. It is a front view of the steam inflow part in the moisture separator of Example 1. 1 is a schematic diagram illustrating a moisture separator according to Example 1. FIG. 1 is a longitudinal sectional view illustrating a moisture separator according to Example 1. FIG. It is a notch perspective view showing the internal structure of the moisture separator of Example 1. FIG. It is a schematic block diagram of the improved pressurized water nuclear power plant to which the moisture separator of Example 1 was applied. It is a longitudinal cross-sectional view of the steam inflow part in the moisture separator which concerns on Example 2 of this invention. It is a front view of the steam inflow part in the moisture separator which concerns on Example 3 of this invention. It is a horizontal sectional view of the steam inflow part in the moisture separator concerning Example 4 of the present invention. It is a longitudinal cross-sectional view in the moisture separator which concerns on Example 5 of this invention. It is a front view of the steam inflow part in the moisture separator which concerns on Example 6 of this invention. It is a horizontal sectional view of the steam inflow part in the moisture separator concerning Example 7 of the present invention. It is a front view of the steam inflow part in the moisture separator of Example 7. It is the schematic showing the conventional moisture separator. It is principal part sectional drawing of the conventional moisture separator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Steam generator 12 Steam turbine 14 High pressure turbine 15 Low pressure turbine 17 Moisture separator 40 Body 41 Steam inlet 42 Steam outlet 43 Drain outlet 44 Heating pipe group 46 Heating pipe 47, 48 Partition wall 50 Moisture separation element 57 Drain opening 58 Second support plate 59 Third support plate 60 Fourth support plate 62 Cover 64 Air outlet 65 Receiving plate (receiving member)
71 Wire mesh (vapor diffusion member)
72 Reinforcement pipe (Abrasion resistant member)
81 Wire mesh (Abrasion resistant member)
82 Perforated plate 91, 92 Wire mesh (moisture recovery member)
S ₁ steam passage S ₂ steam flow space S ₃ steam discharge space S ₄ drain passage S ₅ steam inflow chamber

Claims (9)

  A hollow body, an inflow chamber defined by a partition wall at one longitudinal end of the body, a steam inlet for introducing steam containing moisture into the inflow chamber, and an interior of the body One end portion communicates with the inflow chamber, while a steam passage having a plurality of outlets for discharging steam into the fuselage, and a steam provided in the fuselage and blown from the outlet through the passage of moisture. A moisture separating element for separating the moisture, a steam outlet provided at the upper part of the fuselage for discharging the steam separated by the moisture separating element, and a moisture outlet provided at the lower part of the fuselage A moisture separator having a drain outlet for discharging moisture separated from the steam by the element, and having a corrosion resistance to which the steam introduced into the inlet chamber faces the steam inlet and collides with the inlet. Hitch The moisture separator, characterized in that provided.   2. The moisture separator according to claim 1, wherein the steam passage is provided on both sides of the body, and the impact receiving member is provided between a communication opening of the steam passage with the inflow chamber. A moisture separator characterized by that.   The moisture separator according to claim 1 or 2, wherein an outer diameter of the impact receiving member is set larger than an inner diameter of the steam inlet, and a distance between the impact receiving member and the steam inlet is equal to or larger than an inner diameter of the steam inlet. A moisture separator characterized by being set to.   The moisture separator according to any one of claims 1 to 3, wherein a vapor diffusion member is provided at a communication opening of the vapor passage with the inflow chamber.   5. The moisture separator according to claim 1, wherein an abrasion-resistant member is provided in a region having a length equivalent to a diameter from a communication opening on an inner surface of the steam passage on the inflow chamber side in the steam passage. Moisture separator.   The moisture separator according to any one of claims 1 to 5, wherein a wear-resistant member is provided around the plurality of outlets in the steam passage.   The moisture separator according to any one of claims 1 to 6, wherein a moisture collection member that collects moisture in steam is provided on a surface of the partition wall on the inflow chamber side. Moisture separator.   The moisture separator according to any one of claims 1 to 7, wherein a moisture collection member that collects moisture in the steam is provided on an inner peripheral surface of the inflow chamber side. Separator.   The moisture separator according to any one of claims 1 to 8, wherein the steam passages are provided on both sides of the body, and the moisture separation elements are provided corresponding to the respective steam passages. The heating pipe is inserted between the steam passages from the other end in the longitudinal direction of the body, and the steam blown out from the outlets of the steam passages passes through the moisture separation elements. The moisture separator, wherein the steam from which moisture has been removed is heated by contacting the heating pipe and then flows to the steam outlet.

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