JP2015114023A - Condensate system and power generation facility including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat efficiency by further utilizing cooling water used in heat exchange in an intermediate cooler.SOLUTION: A condensate system 100 includes a condenser 20, a cooling tower 30 cooling storage water stored in the condenser 20 to obtain cooling water, and an intermediate cooler 50 exchanging heat between steam discharged from the condenser 20 and the cooling water from the cooling tower 30. The condenser 20 has a condensing chamber 20 to which the steam discharged from the steam turbine 10 is introduced to be cooled by the cooling water sprayed from a plurality of spray tubes, and a cooling chamber 20 to which the steam cooled in the condensing chamber 20 is introduced for cooling the steam and discharging the same to the external. A supply flow channel 64 is further disposed to supply the cooling water exchanging heat with the steam in the intermediate cooler 50, to the cooling chamber 20.

Description

  The present invention relates to a condensate system and a power generation facility including the same.

  In a thermal power plant or the like that generates steam by using a boiler or the like, a surface contact condenser in which cooling water and steam are not in direct contact is often used in order to reuse steam that has finished work in a turbine. On the other hand, in geothermal power generation, direct contact condensers are often used because steam that is continuously blown from the ground is used and the steam is not reused.

  For example, Patent Document 1 discloses a direct contact condenser for condensing steam by spraying cooling water from a nozzle body provided in a vertically arranged cooling water supply pipe.

JP 2013-148296 A

In the condenser disclosed in Patent Document 1, steam containing non-condensed gas or the like is discharged from an outlet provided downstream of the trunk (condensate chamber). In patent document 1, there is no disclosure about the structure which further cools the vapor | steam discharged | emitted from a discharge port. The steam discharged from the discharge port contains non-condensed gas and the like, and it is desirable to further cool and condense. And it is possible to use the water stored in the hot well of the condenser cooled in the cooling tower as a cooling source for this cooling.
When the cooling water of the cooling tower is used as a cooling source, the temperature of the cooling water used for heat exchange with the steam discharged from the discharge port increases after the heat exchange, but is sufficiently lower than the stored water of the hot well There is. If the cooling water after this heat exchange is directly returned as hot water storage water, the cooling water cannot be fully utilized.

  The present invention has been made in view of such circumstances, and is an intermediate cooling system that cools steam discharged from a condenser with cooling water from a cooling tower that cools stored water stored in the condenser. An object of the present invention is to provide a condensate system in which heat efficiency is further improved by further utilizing the cooling water used for heat exchange in the intercooler in a condensate system equipped with a condenser, and a power generation facility including the condensate system.

In order to solve the above problems, the present invention employs the following means.
A condensate system according to the present invention includes a condenser that cools steam discharged from a steam turbine, and a condenser water that is condensed in the condenser and stored in the condenser to cool the stored water. A condensate system comprising: a cooling tower that performs heat exchange between the steam discharged from the condenser and the stored water cooled by the cooling tower, wherein the condenser The steam discharged from the steam turbine is introduced and the steam is cooled by the cooling water sprayed from a plurality of spray pipes, and the steam cooled by the condensate is introduced, the steam A cooling section that cools and discharges the outside to the outside, and includes a supply flow path that supplies the cooling water that has undergone heat exchange with the steam in the intermediate cooler to the cooling section.

  According to the condensate system according to the present invention, the steam discharged from the steam turbine is cooled by the condensing unit and the cooling unit provided in the condenser, and is discharged to the outside of the condenser. The steam discharged to the outside of the condenser is further cooled by heat exchange with cooling water from the cooling tower in the intermediate cooler. The cooling water used for cooling the steam in the intermediate cooler is supplied to the cooling unit of the condenser via the supply path. The cooling water supplied to the cooling unit of the condenser is used as a cooling source for cooling the steam introduced from the condensing unit of the condenser into the cooling unit.

  In this way, in the condensate system including the intermediate cooler that cools the steam discharged from the condenser by the cooling water from the cooling tower that cools the stored water stored in the condenser, the intermediate cooling is performed. It is possible to provide a condensate system that further increases the thermal efficiency by further utilizing the cooling water used for heat exchange in the vessel.

  In the condenser according to an aspect of the present invention, the cooling unit includes a housing that is provided with an opening below which the steam is introduced from the condensate unit and forms a flow path through which the steam flows. The flow path is a flow path that is formed by being partitioned by a plurality of perforated plates that are arranged at a plurality of positions in the height direction of the housing and in which a plurality of holes are formed. The cooling water that has been subjected to heat exchange with the steam in an intercooler is supplied to the porous plate disposed below the uppermost stage among the plurality of porous plates.

  According to the condenser of this aspect, the steam introduced from the condensing unit to the cooling unit flows through the flow path formed from the lower side to the upper side of the cooling unit. A flow path partitioned by a plurality of perforated plates is formed in the casing of the cooling unit, and the steam flowing through the flow paths is cooled by cooling water that drops downward from the uppermost perforated plate. The perforated plate disposed below the uppermost stage of the plurality of perforated plates is supplied with cooling water that has been subjected to heat exchange with steam in the intermediate cooler, and the steam introduced from the condensate unit to the cooling unit Used for cooling.

  By doing so, the heat of the relatively high-temperature steam that has been introduced from the condensate unit into the cooling unit and reaches the uppermost porous plate and the cooling water after heat exchange supplied from the intermediate cooler Since the exchange is performed, it is possible to further improve the thermal efficiency by further utilizing the cooling water used for the heat exchange in the intermediate cooler.

In the above aspect, the supply flow path may supply the cooling water that has undergone heat exchange with the steam in the intermediate cooler to the lowermost porous plate of the plurality of porous plates. Good.
In this way, heat exchange between the high-temperature steam immediately after being introduced from the condensate unit into the cooling unit and the cooling water after heat exchange supplied from the intermediate cooler is performed. The cooling water used for the heat exchange can be further utilized to increase the thermal efficiency.

A power generation facility according to the present invention includes a steam turbine that exhausts the steam, a power generation device that generates power based on rotational power obtained by the steam turbine, and the condensate system described above.
By doing in this way, it is a condensate system provided with an intermediate cooler that cools steam discharged from the condenser by cooling water from a cooling tower that cools the stored water stored in the condenser, It is possible to provide a power generation facility equipped with a condensate system in which the cooling water used for heat exchange in the intermediate cooler is further utilized to increase the thermal efficiency.

  According to the present invention, in the condensate system including the intermediate cooler that cools the steam discharged from the condenser by the cooling water from the cooling tower that cools the stored water stored in the condenser, the intermediate cooler It is possible to provide a condensate system that further increases the thermal efficiency by further utilizing the cooling water used for heat exchange in the power generation system and a power generation facility equipped with the same.

It is a distribution diagram showing a condensate system concerning one embodiment of the present invention. It is a cross-sectional view of the condenser shown in FIG. It is an AA arrow sectional view of the condenser shown in FIG. It is a BB arrow sectional view of the condenser shown in FIG. It is the elements on larger scale of the cooling chamber shown in FIG.

An embodiment of the present invention will be described below with reference to the drawings.
The condensate system 100 of this embodiment is applicable to convection type geothermal power generation equipment and high temperature rock type geothermal power generation. The convection-side geothermal power generation facility is a facility that obtains steam necessary for power generation by pumping steam that has become hot due to geothermal heat from volcanic activity and high-temperature groundwater. On the other hand, a high-temperature rock-type geothermal power generation facility is a facility that obtains steam necessary for power generation by injecting water into a geological formation that has become hot due to geothermal heat. The high-temperature rock-type geothermal power generation facility has a well for pouring water underground.

As shown in FIG. 1, the power generation equipment including the condensate system 100 of the present embodiment includes a steam turbine 10, a condenser 20, a cooling tower 30, an ejector 40, and an intercooler 50.
Here, FIG. 2 is a cross-sectional view of the condenser 20. That is, a cross section is provided at a substantially intermediate position in the height direction of the condenser 20, and the cross section is viewed from above the condenser 20. Since the discharge port 27 does not appear in the cross section, its position is indicated by a virtual line (two-dot chain line).

  As shown in FIG. 2, the steam discharged from the steam turbine 10 is introduced from the intermediate body 20 a of the condenser 20 and guided to the condensate chamber 20 b (condensate part). The steam introduced into the condensate chamber 20b is cooled and introduced into the cooling chamber 20c. The steam (about 50 ° C.) introduced into the cooling chamber 20 c is further cooled and discharged to the outside of the condenser 20. The steam discharged to the outside is about 25 ° C.

The intercooler 50 is a device that performs heat exchange between the steam discharged from the condenser 20 and the cooling water (about 20 ° C.) from the cooling tower 30. The cooling water (about 40 ° C.) that has undergone heat exchange with the steam in the intercooler 50 is supplied to the cooling chamber 20 c through the supply flow path 64. The cooling water (about 40 ° C.) supplied to the cooling chamber 20 c via the supply channel 64 is used for cooling the steam (about 50 ° C.) introduced into the cooling chamber 20 c as will be described later.
In this way, the condensate system that further increases the thermal efficiency by further utilizing the cooling water used for cooling the steam in the intercooler 50 and using it for cooling the steam introduced from the condensate chamber 20b to the cooling chamber 20c. 100 can be provided.

Hereinafter, each part of the condensate system 100 of this embodiment is demonstrated.
The steam turbine 10 is a device that drives a power generation device (not shown) with steam obtained by reducing the pressure of steam or hot water ejected from the ground with a steam separator (not shown) or the like. The steam decompressed by a steam separator (not shown) or the like is introduced into the steam turbine 10 through the steam introduction flow path 1. The power generation device generates power based on rotational power obtained by the steam turbine.

  The steam introduced into the steam turbine 10 is discharged after working as power for rotating the steam turbine 10, and is introduced into the condensate chamber 20 b through the intermediate body 20 a of the condenser 20. The interior of the condensate chamber 20b is decompressed by an air extractor (not shown) such as an ejector or a vacuum pump when the steam turbine 10 is started. Further, during normal operation of the steam turbine 10, the condenser 20 cools the steam introduced from the steam turbine 10, so that the inside of the condenser 20 is decompressed. The temperature of the steam introduced from the steam turbine 10 into the condenser 20 is approximately 50 ° C., although it varies depending on various conditions.

An inlet 21 is provided on the side surface of the condensate chamber 20b on the side of the intermediate body 20a. The side surface of the intermediate cylinder 20a on the condensing chamber 20b side and the side surface of the condensing chamber 20b on the intermediate cylinder 20a side are in communication with each other via the introduction port 21.
On the other hand, a first opening 22 and a second opening 23 are provided on the side surface of the condensate chamber 20b on the cooling chamber 20c side.

  A part of the steam cooled in the condensate chamber 20b is introduced into the first opening 22, and another part of the steam cooled in the condensate chamber 20b is introduced into the second opening 23. As shown in FIG. 2, the width of the first opening 22 in the second direction is the same as the width of the second opening 23 in the second direction. Therefore, the steam (about 50 ° C.) cooled in the condensate chamber 20 b is divided into half and introduced into each of the first opening 22 and the second opening 23.

  A plurality of cylindrical spray pipes 24 (including spray pipes 24a, 24b, and 24c) through which cooling water flows are arranged inside the condensate chamber 20b, as shown in FIGS. . Each of the plurality of spray pipes 24 has spray ports for spraying cooling water at different positions in the height direction and at different positions in the circumferential direction in the cross section (four positions of 90 ° in FIG. 2). Is provided. The spray pipe 11 is disposed so as to extend upward in the vertical direction from the bottom of the condensate chamber 20b.

  Each of the plurality of spray tubes 24 has a lower end connected to the header 25 and an upper end sealed. Cooling water fed from the cooling tower 30 is supplied to the header 25 via the cooling water supply flow path 60. The cooling water supplied to the header is supplied to each of the plurality of spray pipes 24, and sprayed radially into the condensate chamber 20b from the spray ports provided in each spray pipe 24. The steam is cooled by direct contact between the steam flowing through the condensate chamber 20b and the cooling water sprayed from the spray port.

  As shown in FIG. 3, the plurality of spray tubes 24 are arranged at predetermined intervals so as to be substantially perpendicular to the direction of the vapor in the opening 21. The opening 21 is provided at a position facing the spray port of the spray tube 24. Thereby, the steam introduced from the intermediate cylinder 20a into the condensate chamber 20b through the opening 21 is sufficiently cooled by the cooling water.

  The steam condensed by cooling in the condensate chamber 20b and the cooling water sprayed from the spray pipe 24 are stored as stored water in the hot well 26 provided at the bottom of the condensate chamber 20b shown in FIG. On the other hand, a part of the steam that has not been condensed by the cooling in the condensate chamber 20 b flows into the first flow path 20 d through the first opening 22, and the other part through the second opening 23. Flow into the second flow path 20e.

As shown in FIGS. 3 and 4, the first opening 22 is provided below the casing that forms the first flow path 20d, and the second opening 23 is the casing that forms the second flow path 20e. Is provided below.
The steam whose flow direction is indicated by an arrow in FIG. 2 passes through the condensate chamber 20b without changing the flow direction, and passes through the first opening portion 22 and the second opening portion 23, respectively. It is introduced into the two flow paths 20e.

  The flow direction of the steam introduced into the first flow path 20d is switched from the flow direction (first direction) shown in FIG. 2 to a second direction orthogonal to the first direction. As shown by the arrows in FIG. 4, the first flow path 20d is the end of the casing that forms the first flow path 20d by using the vapor introduced from the first opening 22 and whose flow direction is switched in the second direction. It circulates from the lower part to the upper part while turning back at the part. The steam that has reached the top of the first flow path 20 d is discharged to the outside of the condenser 20 through the discharge port 27.

  Further, the flow direction of the steam introduced into the second flow path 20e is switched from the flow direction (first direction) shown in FIG. 2 to a second direction orthogonal to the first direction. As shown by the arrows in FIG. 4, the second flow path 20e is formed from the second opening 23 and the steam whose flow direction is switched to the second direction is used as the end of the casing that forms the second flow path 20e. It circulates from the lower part to the upper part while turning back at the part. The steam that has reached the top of the second flow path 20 e is discharged to the outside of the condenser 20 through the discharge port 27.

  As shown in FIGS. 3 and 4, the first flow path 20d is formed by a perforated plate 28 (28a, 28b, 28c) arranged at a plurality of positions in the height direction of the casing forming the first flow path 20d. It is a channel formed by partitioning. Each porous plate 28 is formed with a porous portion in which a plurality of holes are formed, as indicated by hatching in FIG.

  As shown in FIG. 4, a supply unit 61a for supplying cooling water to the porous plate 28c arranged at the uppermost stage is provided at the upper part of the casing of the first flow path 20d. Cooling water from the cooling tower 30 is supplied to the supply unit 61 a via the branch flow path 61 branched from the cooling water supply flow path 60. The cooling water supplied to the supply unit 61a is supplied to the perforated plate 28c arranged at the uppermost stage and dripped into the lower perforated plate 28b through the holes provided in the perforated part of the perforated plate 28c. Similarly, the cooling water supplied to the porous plate 28b is dropped onto the lowermost porous plate 28a through holes provided in the porous plate 28b. Further, the cooling water supplied to the porous plate 28a is dropped into the hot well 26 through holes provided in the porous plate 28a.

  As shown in FIG. 4, a supply section 64a for supplying cooling water to the porous plate 28a arranged at the lowermost stage is provided in the middle stage of the first flow path 20d. Cooling water (about 40 ° C.) from the intermediate cooler 50 is supplied to the supply unit 64 a via the supply flow path 64 branched from the flow path 63. The cooling water supplied to the supply part 64a is supplied to the perforated plate 28a arranged at the lowermost stage and dripped into the hot well 26 through the holes provided in the perforated part of the perforated plate 28a.

  As shown in an enlarged view in FIG. 5, the porous plate 28 a is composed of a partition plate 201, a porous portion 202, and a porous portion 203. The partition plate 201 is a plate-like member that prevents the cooling water dropped from the porous plate 28b to the porous portion 202 and the cooling water dropped from the supply portion 64a to the porous portion 203 from being mixed on the porous plate 28a. . By preventing the cooling water dropped from the perforated plate 28b to the porous part 202 and the cooling water dropped from the supply part 64a to the porous part 203, these cooling waters having different temperatures are mixed and heat-exchanged. To prevent it. By preventing this heat exchange, the cooling efficiency in the cooling chamber 20c is prevented from deteriorating.

  The cooling water (about 40 ° C.) supplied from the supply unit 64 a and dripped into the hot well 26 from the porous part 203 is vapor (about 50 ° C.) immediately after being introduced into the first flow path 20 d from the first opening 22. Used for cooling. By doing in this way, compared with the case where the cooling water used for the cooling of the vapor | steam in the intermediate cooler 50 is returned to the hot well 26 as it is, the cooling efficiency of the condenser 20 provided with the cooling chamber 20c is improved. Can do.

  As shown in FIGS. 3 and 4, the second flow path 20e is formed by a porous plate 29 (29a, 29b, 29c) arranged at a plurality of positions in the height direction of the casing forming the second flow path 20e. It is a channel formed by partitioning. Each porous plate 29 is formed with a porous portion in which a plurality of holes are formed, as indicated by hatching in FIG.

  As shown in FIG. 4, a supply unit 61b that supplies cooling water to the perforated plate 29c arranged at the uppermost stage is provided in the upper part of the casing of the second flow path 20e. Cooling water from the cooling tower 30 is supplied to the supply unit 61 b via the branch flow path 61 branched from the cooling water supply flow path 60. The cooling water supplied to the supply unit 61b is supplied to the perforated plate 29c arranged at the uppermost stage, and dripped onto the lower perforated plate 29b through the holes provided in the perforated part of the perforated plate 29c. Similarly, the cooling water supplied to the porous plate 29b is dropped onto the lowermost porous plate 29a through the holes provided in the porous plate 29b. Further, the cooling water supplied to the porous plate 29a is dropped into the hot well 26 through the holes provided in the porous plate 29a.

  As shown in FIG. 4, a supply section 64b for supplying cooling water to the porous plate 29a arranged at the lowermost stage is provided in the middle stage of the casing of the second flow path 20e. Cooling water (about 40 ° C.) from the intermediate cooler 50 is supplied to the supply unit 64 b through the supply flow path 64 branched from the flow path 63. The cooling water supplied to the supply part 64b is supplied to the perforated plate 29a arranged at the lowermost stage, and dripped into the hot well 26 through the holes provided in the perforated part of the perforated plate 29a.

  As shown in an enlarged view in FIG. 5, the perforated plate 29 a includes a partition plate 204, a perforated portion 205, and a perforated portion 206. The partition plate 204 is a plate-like member for preventing the cooling water dropped from the porous plate 29b to the porous portion 205 and the cooling water dropped from the supply portion 64b to the porous portion 206 from being mixed on the porous plate 28a. . By preventing the cooling water dropped from the perforated plate 28b to the porous part 202 and the cooling water dropped from the supply part 64a to the porous part 206, these cooling waters having different temperatures are mixed and heat-exchanged. To prevent it. By preventing this heat exchange, the cooling efficiency in the cooling chamber 20c is prevented from deteriorating.

  The cooling water (about 40 ° C.) supplied from the supply portion 64 b and dripped from the porous portion 206 to the hot well 26 is steam (about 50 ° C.) immediately after being introduced into the second flow path 20 e from the second opening 23. Used for cooling. By doing in this way, compared with the case where the cooling water used for the cooling of the vapor | steam in the intermediate cooler 50 is returned to the hot well 26 as it is, the cooling efficiency of the condenser 20 provided with the cooling chamber 20c is improved. Can do.

  As described above, the cooling water supplied from the supply units 61a, 61b, 64a, and 64b is dropped from above the first flow path 20d and the second flow path 20e. Between each of the plurality of perforated plates 28, the steam flowing in from the first opening 22 passes, and these steams are cooled by dropping from the upper perforated plate 28 to the lower perforated plate 28. Cooled by water. Similarly, steam flowing from the second opening 23 passes between each of the plurality of porous plates 29, and these vapors pass from the upper porous plate 29 to the lower porous plate 29. Cooled by the dripping cooling water.

  Steam discharged from the outlet 27 of the condenser 20 is supplied to the ejector 40 via the discharge passage 41. The ejector 40 is a device that generates a negative pressure inside by injecting the steam supplied from the steam introduction flow path 1 and discharges the steam in the discharge flow path 41 to the discharge flow path 42 by the negative pressure. The magnitude of the negative pressure is adjusted by a regulating valve 70 provided in the steam introduction flow path 1.

  The steam discharged to the discharge flow path 42 by the ejector 40 is introduced into the intercooler 50. Cooling water from the cooling tower 30 is supplied to the intermediate cooler 50 through a branch channel 62 branched from the cooling water supply channel 60. The steam (about 25 ° C.) introduced into the intercooler 50 is cooled by cooling water (about 20 ° C.) supplied from the branch flow path 62. The steam cooled by the intercooler 50 is guided to the cooling tower 30 by the blower 80 and discharged to the outside (in the atmosphere).

  A part of the steam condensed by the cooling by the intercooler 50 and the cooling water supplied via the branch flow path 62 are supplied to the hot well 26 via the flow path 63. The cooling water returning to the hot well 26 via the flow path 63 is about 40 ° C. The steam condensed by the cooling by the intermediate cooler 50 and the other part of the cooling water supplied via the branch flow path 62 are supplied to the supply parts 64a and 64b of the cooling chamber 20c via the supply flow path 64. The The flow rate of the cooling water branched from the flow path 63 to the supply flow path 64 is adjusted by a control unit (not shown) controlling the flow rate adjustment valve 65.

Next, the circulation of the stored water stored in the hot well 26 will be described.
The stored water (about 45 ° C.) stored in the hot well 26 is transferred from the hot well 26 to the cooling tower 30 via the stored water supply channel 91 by a hot well pump 90 provided in the stored water supply channel 91. Water is sent.

The cooling tower 30 cools the stored water by sprinkling the stored water supplied via the stored water transport passage 91 with a sprinkler. The stored water cooled by the cooling tower 30 becomes cooling water (about 20 ° C.) and is supplied to the cooling water supply channel 60.
The cooling water supplied to the cooling water supply channel 60 is supplied to the header 25 of the condenser 20, sprayed in the condensate chamber 20 b, and stored in the hot well 26 again.

The operation and effect of the condenser 20 included in the condensing system 100 of the present embodiment described above will be described.
According to the condensate system 100 of this embodiment, the steam discharged from the steam turbine 10 is cooled in the condensate chamber 20b (condensate unit) and the cooling chamber 20c (cooling unit) provided in the condenser 20, It is discharged outside the water container 20. The steam discharged to the outside of the condenser 20 is further cooled by the intermediate cooler 50 by heat exchange with the cooling water from the cooling tower 30. The cooling water used for cooling the steam in the intermediate cooler 50 is supplied to the cooling chamber 20 c of the condenser 20 through the supply path 64. The cooling water supplied to the cooling chamber 20c of the condenser 20 is used as a cooling source for cooling steam introduced from the condensing chamber 20b of the condenser 20 into the cooling chamber 20c.

  By doing in this way, the condensate system provided with the intermediate cooler 50 which cools the vapor | steam discharged | emitted from the condenser 20 with the cooling water from the cooling tower 30 which cools the stored water stored in the condenser 20. In 100, it is possible to provide the condensate system 100 in which the cooling water used for heat exchange in the intercooler 50 is further utilized to increase the thermal efficiency.

  According to the condenser 20 of the present embodiment, the steam introduced from the condensing chamber 20b to the cooling chamber 20c circulates in the flow path formed from the lower side to the upper side of the cooling chamber 20c. A flow path partitioned by a plurality of perforated plates 28 and 29 is formed in the casing of the cooling chamber 20c, and the vapor flowing through the flow path drops downward from the uppermost perforated plates 28c and 29c. Cooled by cooling water. Further, cooling water that has been subjected to heat exchange with steam in the intermediate cooler 50 is supplied to the porous plates 28a and 29a arranged at the lowest stage of the plurality of porous plates 28 and 29, and cooled from the condensate chamber 20b. Used for cooling the steam immediately after being introduced into the chamber 20c.

  By doing in this way, after the heat exchange supplied from the intercooler 50 with the relatively high-temperature steam introduced from the condensate chamber 20b to the cooling chamber 20c and reaching the uppermost porous plates 28c and 29c. Since the heat exchange with the cooling water is performed, the cooling water used for the heat exchange in the intermediate cooler 50 can be further utilized to increase the thermal efficiency.

The power generation facility of the present embodiment includes a steam turbine 10 that exhausts steam, a power generation device that generates power based on rotational power obtained by the steam turbine 10, and a condensate system 100.
By doing in this way, the condensate system provided with the intermediate cooler 50 which cools the vapor | steam discharged | emitted from the condenser 20 with the cooling water from the cooling tower 30 which cools the stored water stored in the condenser 20. It is possible to provide a power generation facility equipped with a condensate system 100 that is 100 and has further improved thermal efficiency by further utilizing the cooling water used for heat exchange in the intercooler 50.

In the above description, the cooling water used for cooling the steam in the intermediate cooler 50 is supplied from the supply units 64a and 64b to the lowermost porous plates 28a and 29a. Also good.
For example, when the condition that the temperature of the cooling water supplied from the supply units 64a and 64b is sufficiently lower than the temperature of the steam to be heat exchanged, the cooling water is supplied to the middle porous plates 28b and 29b. As described above, the supply portions 64a and 64b may be provided above the middle porous plates 28b and 29b.

DESCRIPTION OF SYMBOLS 1 Steam introduction flow path 10 Steam turbine 20 Condenser 20a Intermediate trunk 20b Condensate chamber (condensate part)
20c Cooling chamber (cooling section)
20d 1st flow path 20e 2nd flow path 24 Spray pipe 30 Cooling tower 60 Cooling water supply flow path 64 Supply flow path 91 Reservation water feed flow path 100 Condensate system

Claims (4)

A condenser for cooling the steam discharged from the steam turbine;
A cooling tower that is condensed in the condenser and cools the stored water stored in the condenser to form cooling water;
An intercooler that performs heat exchange between the steam discharged from the condenser and the cooling water from the cooling tower, and a condensate system comprising:
The condenser is
A condensate unit for introducing the steam discharged from the steam turbine and cooling the steam with the cooling water sprayed from a plurality of spray pipes;
The steam cooled by the condensate unit is introduced, and the cooling unit cools and discharges the steam to the outside.
A condensate system comprising a supply flow path for supplying the cooling water, which has undergone heat exchange with the steam in the intermediate cooler, to the cooling unit. The cooling unit has a housing that is provided with an opening below which the steam is introduced from the condensate unit and forms a flow path through which the steam flows.
The flow path is a flow path formed by being partitioned by a plurality of perforated plates arranged at a plurality of positions in the height direction of the housing and formed with a plurality of holes,
The said supply flow path supplies the said cooling water by which heat exchange with the said vapor | steam was performed with the said intercooler to the said perforated plate arrange | positioned below the uppermost step among these perforated plates. The condensate system according to 1.   3. The condensate according to claim 2, wherein the supply flow path supplies the cooling water that has undergone heat exchange with the steam in the intermediate cooler to the lowest porous plate among the plurality of porous plates. system. A steam turbine exhausting the steam;
A power generation device that generates power based on rotational power obtained by the steam turbine;
The condensate system according to any one of claims 1 to 3,
Power generation equipment comprising.

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