CN114352762B - A special ball valve for high temperature powder slag - Google Patents
A special ball valve for high temperature powder slag Download PDFInfo
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- CN114352762B CN114352762B CN202111572747.0A CN202111572747A CN114352762B CN 114352762 B CN114352762 B CN 114352762B CN 202111572747 A CN202111572747 A CN 202111572747A CN 114352762 B CN114352762 B CN 114352762B
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- 239000002893 slag Substances 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000011229 interlayer Substances 0.000 claims abstract description 42
- 239000002826 coolant Substances 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000012216 screening Methods 0.000 claims description 116
- 239000002245 particle Substances 0.000 claims description 72
- 239000002184 metal Substances 0.000 claims description 53
- 238000007789 sealing Methods 0.000 claims description 49
- 230000000903 blocking effect Effects 0.000 claims description 28
- 238000005192 partition Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 10
- 230000036316 preload Effects 0.000 abstract 1
- 238000007790 scraping Methods 0.000 description 31
- 239000012535 impurity Substances 0.000 description 21
- 230000005540 biological transmission Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 14
- 239000000945 filler Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 239000008187 granular material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明公开一种高温粉渣专用球阀，包括阀体、球体、阀座挡圈和阀体冷却组件。本发明结构新颖合理，通过在阀体的侧壁设置用于冷却介质循环的阀体夹层，并将其依据球体安装位置和阀座安装位置分隔为第一水腔和第二水腔，能够同时满足对球体工作区域和阀座安装区域的冷却需求，不仅解决了高温导致阀体故障的问题，增加了阀门的安全保障及使用寿命，同时解决了超高温状态下的弹簧高温下预紧力失效，进而导致阀门密封失效，影响阀门正常使用的问题，实用性强。
The present invention discloses a ball valve for high-temperature powder slag, comprising a valve body, a ball, a valve seat retaining ring and a valve body cooling assembly. The present invention has a novel and reasonable structure, and by arranging a valve body interlayer for cooling medium circulation on the side wall of the valve body, and dividing it into a first water chamber and a second water chamber according to the ball installation position and the valve seat installation position, the cooling requirements of the ball working area and the valve seat installation area can be met at the same time, which not only solves the problem of valve body failure caused by high temperature, increases the safety guarantee and service life of the valve, but also solves the problem of failure of the preload force of the spring under ultra-high temperature state under high temperature, which leads to failure of the valve seal and affects the normal use of the valve, and has strong practicality.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a ball valve special for a high Wen Fenzha ball valve.
Background
The high-temperature ball valve is used as a component for realizing the on-off and flow control of a pipeline system, and has been widely applied in many fields of petroleum, chemical industry, metallurgy, hydropower and the like. Along with the development of valve technology, the functional requirements of the special ball valve for powder slag applied to severe medium working conditions containing particles, impurities and the like are higher and higher in industry, the valve is required to reach zero leakage standard, the valve can work at high temperature (350-700 ℃) for a long time, the temperature can be raised to about 1000 ℃ when the valve is unstable occasionally, the materials and the structure of the valve are tested greatly, the ball is easy to be expanded and clamped between the ball and a valve seat due to over expansion of the ball caused by the high temperature, or the valve rod is expanded and stretched to be expanded and clamped between the valve rod and the ball, so that the valve fault occurs, and the service life of the valve is influenced. In addition, the sealing element of the existing high-temperature ball valve is usually pre-mounted by a spring, so that the problem that the spring is easy to fail in an ultra-high temperature state (such as about 1000 ℃), and the sealing failure of the valve is caused, so that the normal use of the valve is influenced.
Therefore, the novel high Wen Fenzha special ball valve is provided, so that the ball valve can adapt to various high-temperature working environments, valve faults caused by high temperature are avoided, and the service life of the valve is influenced, and the ball valve is particularly important.
Disclosure of Invention
The invention aims to provide a novel high Wen Fenzha special ball valve which can adapt to various high-temperature working environments, avoid valve faults caused by high temperature and influence the service life of the valve, thereby solving the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions:
The invention provides a ball valve special for high Wen Fenzha, which comprises:
The feeding end of the valve body is provided with a valve seat;
the ball body is arranged in the valve body, and a valve rod is connected to the ball body;
The valve seat check ring is arranged in the valve seat, and a metal sealing ring is arranged on the outer ring of the outlet end of the valve seat check ring and is preloaded and installed on the valve seat through a high-temperature spring;
The valve body cooling assembly comprises a valve body interlayer used for cooling medium circulation, the valve body interlayer is arranged on the side wall of the valve body, an annular cavity separating baffle is arranged in the valve body interlayer to separate the valve body interlayer into a first water cavity and a second water cavity which are mutually isolated in the axial direction of the valve body, the first water cavity is coated on the periphery of the valve seat, the second water cavity is coated on the periphery of the ball body, and a water inlet pipe and a water outlet pipe are respectively arranged on the first water cavity and the second water cavity. The water inlet pipe is arranged on the outer wall of the valve body and is communicated with the first water cavity so as to introduce cooling medium into the first water cavity, and the water outlet pipe is arranged on the outer wall of the valve body and is communicated with the first water cavity so as to discharge the cooling medium in the first water cavity. Correspondingly, the water inlet pipe is arranged on the outer wall of the valve body and is communicated with the second water cavity so as to introduce cooling medium into the second water cavity, and the water outlet pipe is arranged on the outer wall of the valve body and is communicated with the second water cavity so as to discharge the cooling medium in the second water cavity.
The valve body interlayer is an annular interlayer, and the first water cavity and the second water cavity are annular cavities respectively.
Optionally, the first water cavity is provided with:
The directional circulating partition plate is arranged along the axial direction of the valve body and is positioned between the water inlet pipe and the water outlet pipe on the first water cavity;
The support rib plates are arranged along the axial direction of the valve body, a plurality of support rib plates are arranged in the first water cavity at intervals, and water passing holes are formed in any one of the support rib plates.
Optionally, the second water cavity is provided with:
The directional circulating partition plate is arranged along the axial direction of the valve body and is positioned between the water inlet pipe and the water outlet pipe on the first water cavity;
The support rib plates are arranged along the axial direction of the valve body, a plurality of support rib plates are arranged in the first water cavity at intervals, and water passing holes are formed in any one of the support rib plates.
Optionally, a set of water inlet pipe, water outlet pipe, supporting rib plate and directional circulating partition plate are respectively arranged in the first water cavity and the second water cavity.
Optionally, further comprising a sphere cooling assembly comprising:
The sphere interlayer is arranged on the side wall of the sphere and used for cooling medium circulation;
The sphere interlayer water inlet pipe is arranged on the outer wall of the sphere and is communicated with the sphere interlayer so as to introduce a cooling medium;
the sphere interlayer water outlet pipe is arranged on the outer wall of the sphere and is communicated with the sphere interlayer to discharge the cooling medium.
Optionally, the ball interlayer water inlet pipe and the ball interlayer water outlet pipe of the ball cooling assembly may be integrally disposed in a transmission shaft (i.e. the valve rod) connected to the ball, and a water inlet and a water outlet are disposed on the transmission shaft (i.e. the valve rod) and connected to the ball interlayer water inlet pipe and the ball interlayer water outlet pipe respectively. The arrangement of the sphere cooling assembly does not affect the switching of the open and closed states of the sphere.
Optionally, the ball valve special for high-temperature powder slag further comprises:
The particle blocking ring is arranged on the inner ring of the valve seat retainer ring, a screening column is arranged on the inner wall of the particle blocking ring, the projection area of the screening column on the cross section of the particle blocking ring is not more than 1/3 of the cross section area of the particle blocking ring, the screening column is positioned at the front part of the valve body opening before the ball body is completely closed, and the screening column can intercept part of particles from entering the valve body before the ball body is completely closed;
The metal ash scraping ring is arranged on the outer ring of the outlet end of the valve seat retainer ring, is positioned on the inner ring of the metal sealing ring, and can be contacted with the spherical surface of the sphere to form an ash scraping ring and a sealing surface position of the sphere so as to intercept particles entering the valve body through the screening column from continuously entering before the sphere is completely closed;
The second grade screening position, the second grade screening position is located the inner circle of metal ash scraping ring, just the second grade screening position with there is the second grade screening clearance between the spheroidal sphere, the second grade screening clearance can be before the spheroid is closed completely, intercept get into through the screening fence the granule part of valve body continues to get into. On the basis, the screening column is used as a first-stage screening position, the metal ash scraping ring is used as a third-stage ash removing position, the first-stage screening position, the second-stage screening position and the third-stage ash removing position jointly act, particles are screened layer by layer and intercepted, and the effects of preventing the particles from entering the valve body and damaging the sealing surface before the valve is completely closed are achieved;
the screening fence is positioned at the front part of the opening of the valve body before the ball body is completely closed, specifically, the screening fence is arranged near the rotating terminal when the ball body is closed, when the ball body is about to be closed, most of the inlet on the valve body is basically blocked by the spherical surface of the ball body, the part which is not blocked by the spherical surface is the part which is not yet turned to the ball body in the closing process, when the ball body is completely closed, namely, the ball body reaches the rotating terminal when the ball body is closed, the screening fence is arranged at the front part of the rotating terminal, before the ball body is completely closed, the ball body does not reach the rotating terminal, a gap is arranged between the ball body and the valve body, the gap occupies the cross section of the whole water inlet end of the valve body with the spherical surface of the ball body, the part occupied by the spherical surface of the ball body is formed, and the dust scraping ring and the spherical surface of the ball body are not occupied by the spherical surface, namely, large particle impurities are still likely to enter the gap, the screening fence is arranged at the front part of the gap, the whole cross section of the water inlet end of the valve body is not required to be covered, and the whole cross section of the water inlet end of the valve body is not required to be covered by the screening fence based on the whole cross section of the whole water inlet end of the valve body. Of course, under other specific requirements, the coverage area of the screening bar on the cross section of the water inlet end of the valve body can be enlarged, and even the cross section of the water inlet end of the valve body can be completely covered.
Optionally, the second-stage screening position is disposed at one end of the particle blocking ring, which is close to the sphere, and is integrally formed with the particle blocking ring.
Optionally, a retaining ring groove is formed in the second-stage screening position and/or the inner ring of the metal ash scraping ring, and the retaining ring groove is used for containing intercepted particles.
Optionally, the second grade screening position with the retaining ring groove has all been seted up to the inner circle of metal scraping the ash ring, the retaining ring groove of second grade screening position inner circle is as the second grade retaining ring groove, the retaining ring groove of metal scraping the ash ring inner circle is as tertiary retaining ring groove, all is formed with sufficient accommodation space between second grade retaining ring groove and tertiary retaining ring groove and the spheroidal sphere.
Optionally, the second-stage screening position, the metal ash scraping ring and the metal sealing ring are all pre-mounted on the valve seat by adopting a high-temperature spring.
Optionally, the metal sealing ring is a hard alloy sealing ring, and a filler top block are arranged between the metal sealing ring and the valve seat. The filler may be graphite rings and the filler top block may be a gasket structure.
Optionally, the top end of the valve rod (i.e. the transmission shaft) is connected with an actuator, and a transmission shaft bracket can be configured outside the valve rod (i.e. the transmission shaft). The actuator is an electric or manual actuator, and the transmission shaft bracket is fixed on the top of the valve body.
Optionally, the top of the sphere is connected with the valve rod (i.e. the transmission shaft), and the bottom is connected with a positioning shaft, thereby forming a fixed ball valve structure. The positioning shaft end can be provided with a shaft rear cover.
Optionally, the screening column comprises a plurality of screening channels distributed along the flowing direction of the medium, the width of any screening channel is sequentially increased along the flowing direction of the medium, and the outer surface of the screening column is sprayed with a carbide coating.
Optionally, any cross section of any screening channel is rectangular.
Optionally, the complete closing is preceded by a valve state when the sphere is closed to an angle of rotation α, wherein 0< α.ltoreq.22.
Compared with the prior art, the invention has the following technical effects:
the ball valve special for the high Wen Fenzha is novel and reasonable in structure, the valve body interlayer for cooling medium circulation is arranged on the side wall of the valve body, and is divided into the first water cavity and the second water cavity according to the ball body installation position and the valve seat installation position, so that the cooling requirements on the ball body working area and the valve seat installation area can be met at the same time, the problem that the valve body fails due to high temperature is solved, the safety guarantee and the service life of the valve are prolonged, the problem that the valve sealing fails due to failure of the pretightening force of the spring under the ultrahigh temperature state is solved, and the normal use of the valve is influenced.
In another technical scheme disclosed by the invention, larger particles are screened out before the ball body is completely closed by arranging the screening column, so that the larger particles can be prevented from entering the valve body to cause the clamping shell of the valve body to be incapable of being closed, and meanwhile, the particles entering the valve body through the screening column can be prevented from continuously entering and damaging the metal sealing ring by arranging the metal ash scraping ring and forming an ash scraping ring and ball body sealing surface position between the metal ash scraping ring and the spherical surface of the ball body. Through the arrangement of the screening bars and the metal ash scraping rings, the effect of effectively preventing impurity particles from entering the valve body when the ball valve is closed is achieved, and the sealing performance of the valve body is improved and the service life of the valve body is prolonged. The projection area of the screening fence on the cross section of the particle blocking ring only occupies a small part of the whole cross section area of the particle blocking ring, so that the large-particle impurity screening effect can be achieved while the flow of the ball valve is ensured. In order to further improve the screening effect of the particles, the invention also provides a secondary screening position, a secondary screening gap is reserved between the secondary screening position and the spherical surface of the sphere, and part of the particles entering the valve body through the screening column can be intercepted to enter continuously before the sphere is completely closed. On this basis, screening fence, second grade screening position and metal scrape grey ring and act together as one-level screening position, second grade screening position and tertiary deashing position respectively, screen the granule layer upon layer and intercept, reach and prevent that the granule from getting into the valve body before the valve is closed completely and damaging sealed face's effect, structural design is ingenious, excellent in use effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the present invention;
FIG. 2 is a cross-sectional view I of a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the present invention;
FIG. 3 is a second cross-sectional view of a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the present invention;
FIG. 4 is a schematic diagram of a valve state when a ball in a high Wen Fenzha special ball valve is closed to 22 degrees of rotation according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the structure shown at A in FIG. 4;
FIG. 6 is an enlarged schematic view of the structure shown at B in FIG. 4;
FIG. 7 is a schematic view of a particle blocking ring in a high Wen Fenzha dedicated ball valve according to an example embodiment of the present invention;
FIG. 8 is a front view of a particle blocking ring in a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the present invention;
FIG. 9 is an axial cross-sectional view of a particle blocker ring in a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the invention;
FIG. 10 is a schematic view of the installation of a particle blocking ring in a high Wen Fenzha dedicated ball valve disclosed in an embodiment of the present invention;
FIG. 11 is a schematic view of a first water chamber of a ball valve special for high Wen Fenzha according to an embodiment of the present invention;
Fig. 12 is a schematic structural diagram of a second water chamber in the high Wen Fenzha dedicated ball valve according to an embodiment of the present invention.
Wherein, the reference sign is 100, the special ball valve of high Wen Fenzha; the valve comprises a valve body, a ball body, a3, a valve seat retainer ring, a 4, a particle blocking ring, a 5, a metal ash scraping ring, a 6, a second screening position, a 7, a valve seat, a 8, a metal sealing ring, a 9, a sealing ring and ball body position, a 10, a screening column, a 11, a screening channel, a 12, an ash scraping ring and ball body position, a 13, a second screening gap, a 14, a second retainer ring groove, a 15, a third retainer ring groove, a 16, a filler, a 17, a filler top block, a 18, a metal sealing ring pre-tightening spring hole matched with a high-temperature spring, a 19, a second retainer ring pre-tightening spring hole matched with a high-temperature spring, a 20, a third retainer ring pre-tightening spring hole matched with a high-temperature spring, a 21, a blocked particle, a 22, a water inlet pipe, a 23, a water outlet pipe, a 24, a directional circulation partition plate, a25, a supporting rib plate, a 26, a water passing hole, a 27, a partition plate, a 28, a first water cavity, a 29, a second water cavity, a 30, a transmission shaft, a 31, a transmission shaft bracket, a 32, a filler gland, a 33, a filler bin, a 34, a thrust pad, a 35, a high-temperature resistant transmission sleeve, a 36, a valve seat, a sealing position, a 37, a connecting shaft support, a positioning flange, a shaft bracket 40, a positioning flange, a positioning shaft and a positioning flange.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a novel high Wen Fenzha special ball valve which can adapt to various high-temperature working environments, avoid valve faults caused by high temperature and influence the service life of the valve, thereby solving the problems existing in the prior art.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1-12, the present embodiment provides a ball valve 100 special for high Wen Fenzha, mainly comprising a valve body 1, a ball body 2, a particle blocking ring 4, a metal ash scraping ring 5 and a secondary screening position 6. The ball 2 is arranged in the valve body 1, the valve seat 7 is arranged at the feeding end of the valve body 1, the valve seat retainer ring 3 is arranged between the ball 2 and the valve seat 7, the metal sealing ring 8 is arranged at the outer ring of the outlet end (namely, the rear part in the medium flowing direction) of the valve seat retainer ring 3, the metal sealing ring 8 can be contacted with the spherical surface of the ball 2 to form a sealing ring and ball sealing surface position 9, the particle blocking ring 4 is arranged at the inner ring of the valve seat retainer ring 3, the screening column 10 is arranged on the inner wall of the particle blocking ring 4, the projection area of the screening column 10 on the cross section of the particle blocking ring 4 is not larger than 1/3 of the cross section area of the particle blocking ring 4, the screening column 10 is positioned at the front part of the opening of the valve body 1 before the ball 2 is completely closed (namely, the front part in the medium flowing direction of the ball 2 must enter the valve body through the front part), and can intercept part of particles into the valve body 1 before the ball 2 is completely closed, the metal scraping ring 5 is arranged at the outlet end of the valve seat retainer ring 3, the metal scraping ring 5 is positioned at the inner ring of the metal sealing ring 8, the projection area of the metal scraping ring 5 can be contacted with the spherical surface of the ball 2 to form a dust scraping ring 12 before the ball 12 enters the ball body through the ball sealing surface 12 and can continue to be completely closed through the screening column 10. The ash scraping ring and the ball sealing surface position 12 are always in the rotation process of the ball 2, and the ash scraping ring and the ball sealing surface position 12 can play a role in intercepting the continuous entering of the particles entering the valve body 1 through the screening column 10 in the opening state, the semi-opening state and the closing state of the ball 2, so that the entering of the impurities between the ball 2 and the metal sealing ring 8 is prevented, and the impurities are extruded at the closing moment of the ball 2, so that the damage to the ball 2 or the metal sealing ring 8 is caused.
In this embodiment, as shown in fig. 2 to 6, the screening column 10 is located at the front of the opening of the valve body 1 before the ball 2 is completely closed, specifically, the screening column 10 is located near the rotation terminal when the ball 2 is closed, when the ball 2 is about to be closed, most of the inlet on the valve body 1 is basically blocked by the spherical surface of the ball 2, and the portion not blocked is the portion of the ball 2 which is not yet turned during the closing process, when the ball 2 is completely closed, that is, the rotation terminal when the ball 2 reaches the ball 2 to be closed, the screening column 10 is located at the front of the rotation terminal, before the ball 2 is completely closed, the ball 2 does not yet reach the rotation terminal, there is a gap between the ball 2 and the valve body 1, the spherical surface of the gap and the spherical surface of the ball 2 occupy the cross section of the whole valve body 1, and the portion occupied by the spherical surface of the ball 2 is already formed, the scraper ring and the spherical surface 12 of the spherical surface of the ball 2 are not occupied, that is still likely to have large particle impurities entering, when the screening column 10 is located at the front of the gap, and the whole cross section of the valve body 1 does not need to be covered, and the whole cross section of the valve body 1 is not need to be covered by the whole cross section of the valve body 1, and the whole cross section of the inlet flow is not covered by the whole cross section of the valve body 1 is guaranteed. Of course, in other specific requirements, the coverage area of the screening bar 10 on the water inlet end cross section of the valve body 1 can be enlarged, and even the water inlet end cross section of the valve body 1 can be completely covered.
In this embodiment, as shown in fig. 2 to 6, the device further includes a second screening position 6, the second screening position 6 is located at an inner ring of the metal ash scraping ring 5, and a second screening gap 13 is formed between the second screening position 6 and a spherical surface of the ball body 2, where the second screening gap 13 can intercept a part of the particulate matters entering the valve body 1 through the screening column 10 to continue entering before the ball body 2 is completely closed. On this basis, screening fence 10 is as the one-level screening position, and metal scrapes grey ring 5 and regard as tertiary deashing position, and one-level screening position, second grade screening position 6 and tertiary deashing position co-operate, screen the granule and intercept layer upon layer, reach and prevent that the granule from getting into valve body 1 before the valve is closed completely and damage sealed face's effect. In this embodiment, it may be preferable that the first-stage screening position, that is, the screening column 10 can intercept large particle impurities with a particle size of 6mm or more, the particle impurities passing through the screening column 10 are all particle impurities with a particle size of 6mm or less, the particle impurities with a particle size of more than 3mm cannot pass through the second-stage screening gap 13, so as to achieve the effect of being secondarily intercepted by the second-stage screening position 6, and the residual particle impurities entering through the second-stage screening gap 13 can be intercepted again under the action of the third-stage ash cleaning position, that is, the ash scraping ring and the spherical sealing surface position 12, so as to prevent the residual particle impurities from entering between the ball valve 2 and the metal sealing ring 8.
In this embodiment, as shown in fig. 2 to 3, the secondary screening position 6 is disposed at one end of the particle blocking ring 4 near the sphere 2, and is integrally formed with the particle blocking ring 4.
In this embodiment, as shown in fig. 2 to 6, the inner rings of the second-stage screening position 6 and the metal ash scraping ring 5 are provided with a retainer ring groove, the retainer ring groove of the inner ring of the second-stage screening position 6 is used as a second-stage retainer ring groove 14, the retainer ring groove of the inner ring of the metal ash scraping ring 5 is used as a third-stage retainer ring groove 15, and enough accommodating spaces are formed between the second-stage retainer ring groove 14 and the spherical surface of the ball body 2 and used for accommodating particle impurities intercepted by the two respectively.
In this embodiment, the valve body 1 is preferably made of a conventional wear-resistant material, and the ball 2 is preferably a high-temperature-resistant ball made of a high-temperature-resistant material.
In this embodiment, as shown in fig. 1, the secondary screening position 6, the metal ash scraping ring 5 and the metal sealing ring 8 are all mounted on the valve seat 7 by adopting high-temperature spring pre-tightening, and the specific arrangement modes are as shown in fig. 2, namely, a second check ring pre-tightening spring hole and a high-temperature spring 19, a third check ring pre-tightening spring hole and a high-temperature spring 20, and a metal sealing ring pre-tightening spring hole and a high-temperature spring 18, respectively.
In this embodiment, the metal seal ring 8 is a hard alloy seal ring, and a filler 16 and a filler top block 17 are arranged between the metal seal ring and the valve seat 7. The packing 16 may be a graphite ring and the packing top 17 may be a gasket structure.
In this embodiment, the ball valve 100 special for high Wen Fenzha further includes a valve body cooling component, which includes a valve body interlayer, a water inlet pipe 22 and a water outlet pipe 23, the valve body interlayer is disposed on a side wall of the valve body 1 for cooling medium circulation, the water inlet pipe 22 is disposed on an outer wall of the valve body 1 and is communicated with the valve body interlayer for introducing cooling medium, the water outlet pipe 23 is disposed on an outer wall of the valve body 1 and is communicated with the valve body interlayer for discharging cooling medium, and the directional circulation partition 24 is disposed in the valve body interlayer and is located between the water inlet pipe 22 and the water outlet pipe 23.
In this embodiment, the valve body cooling assembly further includes a supporting rib plate 25, the supporting rib plate 25 is disposed in the valve body interlayer, and water holes 26 are formed in the supporting rib plate 25. Wherein, the supporting rib plates 25 are arranged at intervals, the valve body interlayer is an annular interlayer, and the directional circulating partition plate 24 and the supporting rib plates 25 are arranged in the annular interlayer along the axial direction of the valve body 1.
In this embodiment, as shown in fig. 2, 11 and 12, a cavity dividing partition plate 27 is provided in the valve body interlayer, and the cavity dividing partition plate 27 is an annular partition plate for dividing the valve body interlayer into two cavities isolated from each other in the axial direction of the valve body 1, and the two cavities correspond to the ball 2 mounting portion and the valve seat 7 mounting portion, respectively. The two cavities are a first water cavity 28 and a second water cavity 29 respectively, and a set of water inlet pipe 22, a water outlet pipe 23, supporting rib plates 25 and a directional circulating partition plate 24 are respectively arranged on the first water cavity 28 and the second water cavity 29.
In the embodiment, the ball valve special for the high Wen Fenzha further comprises a ball cooling assembly, wherein the ball cooling assembly comprises a ball interlayer, the ball interlayer is arranged on the side wall of the ball 2 and used for cooling medium circulation, and a water inlet pipe and a water outlet pipe which are communicated with the ball interlayer are arranged on the ball interlayer. The water inlet pipe and the water outlet pipe of the sphere cooling assembly can be integrally arranged in a transmission shaft 30 (namely a valve rod) connected with the sphere 2, and a water inlet and a water outlet are arranged on the transmission shaft 30 (namely the valve rod) and are respectively connected with the water inlet pipe 22 and the water outlet pipe 23. The arrangement of the sphere cooling assembly does not affect the switching of the open and closed states of the sphere 2.
In this embodiment, as shown in fig. 2, the top end of the ball 2 is connected with a transmission shaft 30 (i.e. a valve rod), the top end of the transmission shaft 30 (i.e. the valve rod) is connected with an actuator, and the bottom of the ball 2 is connected with a positioning shaft 38, thereby forming a fixed ball valve structure. As shown in fig. 2 to 3, the transmission shaft 30 (i.e., the valve rod) may be externally configured with a transmission shaft bracket 31, a packing gland 32, a packing bin 33, a thrust pad 34, a high temperature resistant transmission shaft sleeve 35, etc. according to a valve conventional structure, and the positioning shaft 38 may be configured with a shaft rear cover 41, a positioning shaft sleeve 40, a positioning shaft bracket 39, etc. according to a valve conventional structure.
In this embodiment, as shown in fig. 2 to 3, both ends of the valve body 1 are provided with connection flanges 37 for connection with a pipeline. A valve seat and valve body sealing position 36 with a three-stage sealing structure is formed between the valve seat 7 and the valve body 1.
In this embodiment, as shown in fig. 7 to 10, the screening column 10 includes a plurality of screening channels 11 distributed along the flow direction of the medium, and the width of any one of the screening channels 11 increases in sequence along the flow direction of the medium, and the outer surface of the screening column 10 is coated with a carbide coating.
In this embodiment, as shown in fig. 7 to 10, any cross section of any screening passage 11 is rectangular.
In this embodiment, the valve state before the ball 2 is completely closed is specifically referred to as a valve state when the ball 2 is closed to rotate by α degrees, wherein 0< α is less than or equal to 22. As shown in fig. 4, the valve state is schematically shown when the ball 2 is closed to 22 degrees of rotation.
Therefore, the ball valve special for the high Wen Fenzha provided by the embodiment is novel and reasonable in structure, the valve body interlayer for cooling medium circulation is arranged on the side wall of the valve body, the ball valve is divided into the first water cavity and the second water cavity according to the ball installation position and the valve seat installation position, the cooling requirements for the ball working area and the valve seat installation area can be met at the same time, the problem that the valve body fails due to high temperature is solved, the safety guarantee and the service life of the valve are prolonged, and the problem that the valve is influenced by the sealing failure of the valve due to the fact that the pre-tightening force fails due to the high temperature of the spring in the ultra-high temperature state is solved. Meanwhile, the ball cooling assembly is further arranged, so that the valve can be further cooled, and the overall high-temperature adaptability and the service life of the valve can be improved.
Under severe working conditions, medium particles and impurities are more, more particles and impurities still enter the valve body from an opening gap in the closing process of the existing ball valve or at the moment when the existing ball valve is about to be closed, during the period, the impurities further scour and scratch the sealing surface (a sealing ring between a valve seat retainer ring and a ball body in general) to directly influence the sealing performance, meanwhile, the impurity particles with smaller particle sizes probably enter the valve body when the ball valve is closed and are crushed by the ball body and the valve body, but the sealing surface is damaged, and the impurity particles with larger particle sizes (such as the particle size of more than 60 mm) are likely to be clamped between the ball body and the valve body of the ball valve, so that the ball valve cannot be closed continuously, the damage of the ball valve is caused, and the service life of the ball valve is reduced. The special ball valve for the high Wen Fenzha is novel and reasonable in structure, larger particles are screened out before the ball body is completely closed through the screening column, the larger particles can be prevented from entering the valve body, the valve body clamping shell cannot be closed, meanwhile, the metal ash scraping ring is arranged, an ash scraping ring and a ball body sealing surface position are formed between the metal ash scraping ring and the spherical surface of the ball body, and the particles entering the valve body through the screening column can be prevented from continuously entering and damaging the metal sealing ring. Through the arrangement of the screening bars and the metal ash scraping rings, the effect of effectively preventing impurity particles from entering the valve body when the ball valve is closed is achieved, and the sealing performance of the valve body is improved and the service life of the valve body is prolonged. The projection area of the screening fence on the cross section of the particle blocking ring only occupies a small part of the whole cross section area of the particle blocking ring, so that the large-particle impurity screening effect can be achieved while the flow of the ball valve is ensured.
In addition, in order to further promote particulate matter screening effect, this embodiment has set up the second grade screening position, has the second grade screening clearance between the sphere of second grade screening position and spheroid, can intercept the part in the particulate matter that gets into the valve body through screening fence before the spheroid is closed completely and continue to get into. On this basis, screening fence, second grade screening position and metal scrape grey ring and act together as one-level screening position, second grade screening position and tertiary deashing position respectively, screen the granule layer upon layer and intercept, reach and prevent that the granule from getting into the valve body before the valve is closed completely and damaging sealed face's effect, structural design is ingenious, excellent in use effect.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided herein to facilitate understanding of the principles and embodiments of the present invention and to provide further advantages and practical applications for those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (7)
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| CN202111572747.0A CN114352762B (en) | 2021-12-21 | 2021-12-21 | A special ball valve for high temperature powder slag |
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| CN202111572747.0A CN114352762B (en) | 2021-12-21 | 2021-12-21 | A special ball valve for high temperature powder slag |
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| CN114352762A CN114352762A (en) | 2022-04-15 |
| CN114352762B true CN114352762B (en) | 2025-04-11 |
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| CN203202397U (en) * | 2013-02-26 | 2013-09-18 | 中冶南方工程技术有限公司 | Ball valve |
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| CN212131375U (en) * | 2020-05-18 | 2020-12-11 | 南京科宏铸造有限公司 | A wear-resistant and corrosion-resistant ball valve |
| CN213575676U (en) * | 2020-10-26 | 2021-06-29 | 超达阀门集团股份有限公司 | Single-valve-seat ball valve capable of preventing solid particle medium from being blocked |
| CN216895874U (en) * | 2021-12-21 | 2022-07-05 | 洪德隆 | Ball valve special for high-temperature powder slag |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654202B (en) * | 2012-04-20 | 2016-08-10 | 欧维克集团有限公司 | High-temperature metal hard seal ball valve for granular media |
| US9518665B2 (en) * | 2013-11-14 | 2016-12-13 | Hantemp Corporation | Ball valve for cold fluids |
| CN110513533A (en) * | 2019-08-27 | 2019-11-29 | 志泰阀门有限公司 | Crystallize Special change-over valve |
| CN214889012U (en) * | 2021-04-30 | 2021-11-26 | 浙江力诺流体控制科技股份有限公司 | Ball valve with heat-insulating jacket |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203202397U (en) * | 2013-02-26 | 2013-09-18 | 中冶南方工程技术有限公司 | Ball valve |
| CN103375604A (en) * | 2013-07-23 | 2013-10-30 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| CN212131375U (en) * | 2020-05-18 | 2020-12-11 | 南京科宏铸造有限公司 | A wear-resistant and corrosion-resistant ball valve |
| CN213575676U (en) * | 2020-10-26 | 2021-06-29 | 超达阀门集团股份有限公司 | Single-valve-seat ball valve capable of preventing solid particle medium from being blocked |
| CN216895874U (en) * | 2021-12-21 | 2022-07-05 | 洪德隆 | Ball valve special for high-temperature powder slag |
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Effective date of registration: 20231225 Address after: No. 1473 Qingliu East Road, Chuzhou City, Anhui Province, 239000 Applicant after: Anhui min Zhi Yu Valve Technology Co.,Ltd. Address before: 239000 Room 102, No. 1, 1473 East Road, Chuzhou, Anhui. Applicant before: Hong Delong |
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