CN108799560B - Blocking valve of steam distribution vertical shaft - Google Patents
Blocking valve of steam distribution vertical shaft Download PDFInfo
- Publication number
- CN108799560B CN108799560B CN201810848073.4A CN201810848073A CN108799560B CN 108799560 B CN108799560 B CN 108799560B CN 201810848073 A CN201810848073 A CN 201810848073A CN 108799560 B CN108799560 B CN 108799560B
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- China
- Prior art keywords
- shaft
- plug
- pipe
- steam distribution
- vertical shaft
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Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/076—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a blocking valve of a steam distribution vertical shaft, which comprises a shaft tube with a hollow structure and a movable plug, wherein the movable plug is rotatably arranged on the outer side wall of an inner cylinder of the vertical shaft; the movable plug comprises a plug, an elastic device, a hydraulic piston and a top support channel steel; the plugs and the jacking channel steel are respectively arranged at two ends of the elastic device, and the jacking channel steel is connected with the outer wall of the inner barrel of the vertical shaft; the hydraulic piston is arranged at one end of the shaft tube, the end part of the hydraulic piston penetrates through the elastic device to be connected with the plug, a hydraulic medium and the elastic device are arranged in the shaft tube to respectively control the extension and return of the hydraulic piston, and the other end of the shaft tube penetrates through a shaft dome of the gas distribution shaft to be connected with the driving device. The blocking valve adopts the plurality of steam distribution flat pipes to share the movable plug, so that the movable plug is used for sealing the plurality of steam distribution flat pipes, and the movable plug is used for replacing a butterfly valve to realize the on-off of the steam distribution flat pipes, thereby reducing the total investment of the hertz dry cooling system and lowering the operation cost.
Description
Technical Field
The invention relates to the technical field of dead steam dry cooling of thermal power plants or nuclear power plants, in particular to a blocking valve of a steam distribution vertical shaft.
Background
In the prior art, a closed steam distribution vertical shaft in a hertz dry cooling system is shown in fig. 1, steam is supplied to the steam distribution vertical shaft through a steam exhaust main pipe, a plurality of steam distribution flat pipes are uniformly distributed on the side wall of the steam distribution vertical shaft along the circumference, the steam distribution vertical shaft uniformly distributes steam to each steam distribution flat pipe, and a butterfly valve is arranged on each steam distribution flat pipe and used for controlling the opening and closing of the steam distribution flat pipe, so that the steam distribution vertical shaft is convenient to overhaul.
However, the cost of the butterfly valve is high, and the single cost is hundreds of thousands, so that the total investment of the Hertz dry type cooling system is increased, the occupied area is large, and meanwhile, the butterfly valve is more due to the plurality of steam distribution flat pipes, so that the butterfly valve is not easy to manage.
Aiming at the prior art, it is urgently needed to design a blocking valve of a gas distribution vertical shaft so as to reduce the total investment of the Hertz dry type cooling system.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a blocking valve of a steam distribution vertical shaft, which adopts a structure that a plurality of valves share one valve core, and seals all steam distribution flat pipes by one movable plug, so that the investment of a Hz dry cooling system can be effectively reduced.
The invention is realized by the following technical scheme:
the blocking valve of the gas distribution vertical shaft comprises a shaft tube with a hollow structure and a movable plug, wherein the movable plug is rotatably arranged on the outer side wall of an inner cylinder of the vertical shaft;
the movable plug comprises a plug, an elastic device, a hydraulic piston and a top support channel steel; the plugs and the jacking channel steel are respectively arranged at two ends of the elastic device, the jacking channel steel is contacted with the outer wall of the shaft inner barrel and can move along the circumferential direction of the outer wall of the shaft inner barrel;
the hydraulic piston is arranged at one end of the shaft tube, the end part of the hydraulic piston passes through the elastic device and is connected with the plug, the elastic device and the hydraulic medium filled in the shaft tube respectively control the return and the extension of the hydraulic piston, and the other end of the shaft tube passes through the vertical shaft dome of the gas distribution vertical shaft and is connected with the driving device.
Preferably, the outer cylinder is provided with a reducing steel pipe, the reducing steel pipe is a taper pipe, one end with a large diameter is connected with the outer wall of the outer cylinder, and the steam distribution flat pipe is connected with the outer cylinder through the reducing steel pipe.
Preferably, the plug is a cone plug, the side wall of the cone plug is an inclined plane, a rubber sealing layer is further arranged on the inclined plane, and the inclined plane is matched with the inner wall of the reducing steel pipe.
Preferably, the shaft tube is in a ladder shape and comprises a first section of tube, a second section of tube, a third section of tube and a fourth section of tube which are connected in sequence;
the upper end of the first section pipe that sets up perpendicularly passes the center of shaft dome, and the lower extreme of first section pipe is connected with the one end of the second section pipe that the level set up, and the other end of second section pipe is located the top of shaft inner tube to connect the upper end of the third section pipe that sets up perpendicularly, the third section pipe is located the outside of shaft inner tube, and the lower extreme of third section pipe is connected with the fourth section pipe that the level set up, and hydraulic piston sets up the tip at the fourth section pipe, and hydraulic piston passes resilient means and is connected with the end cap.
Preferably, a piston liquid inlet valve is arranged at the part of the first section pipe, which is positioned outside the vertical shaft dome, and is used for controlling the pressure in the shaft pipe to drive the hydraulic piston to act.
Preferably, the second joint pipe is provided with a gear, the top of the shaft inner barrel is provided with a tooth slot, and the gear is meshed with the tooth slot and used for enabling the movable plug to rotate along the side wall of the shaft inner barrel.
Preferably, the elastic device is a spring, and the spring is in a stretching state when the plug seals the steam distribution flat pipe.
Preferably, the elastic device is arranged on the end face of the jacking channel steel, the end parts of the two side plates of the jacking channel steel are also provided with force transmission annular plates, the force transmission annular plates are provided with balls, and the movable plugs rotate along the circumference of the side wall of the shaft inner barrel through the balls.
Preferably, the lower end of the force transmission annular plate is further provided with a ball, the side wall of the vertical shaft inner cylinder is further provided with an annular ear annular plate, and the ball at the lower end of the force transmission annular plate rolls along the ear annular plate.
Preferably, a supporting rod for supporting the plug is further arranged at the bottom of the plug, a roller is arranged at the lower end of the supporting rod, and the supporting rod and the plug move synchronously.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a blocking valve of a steam distribution vertical shaft, which adopts a plurality of steam distribution flat pipes to share a movable plug, wherein the movable plug is horizontally arranged on the outer wall of an inner cylinder of the vertical shaft through a shaft pipe, and the shaft pipe drives the movable plug to rotate and seals one steam distribution flat pipe; the end of the shaft tube is provided with the hydraulic piston, the hydraulic piston penetrates through the elastic device to be connected with the plugs, when a certain steam distribution flat tube needs to be maintained, the movable plugs are rotated to corresponding positions, the hydraulic piston stretches out under the action of pressure to enable the plugs to seal the steam distribution flat tube, after maintenance is finished, the shaft tube is decompressed, the plugs are reset under the tensile force of the spring, the movable plugs are used for sealing a plurality of steam distribution flat tubes, the movable plugs are used for replacing butterfly valves to realize the on-off of the steam distribution flat tubes, the total investment of the hertz dry cooling system is reduced, and the operation cost is reduced.
The sealing structure is changed, the cone plug seals the steam distribution flat pipe by adopting the inclined plane, the sealing performance is improved, and the inclined plane also plays a guiding role.
The shaft tube is in gear transmission with the top of the shaft inner barrel, so that the stability and the accuracy of transmission are improved.
The end part of the movable plug is provided with the force transmission annular plate and the ball, so that the friction force between the movable plug and the inner barrel of the vertical shaft during rotation is reduced, and the operation is more labor-saving.
The bottom of the movable plug is provided with the following supporting rod, so that the movable plug is provided with the supporting rod function, the plug can seal the steam distribution flat pipe stably, and the service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a prior hertz dry cooling system.
FIG. 2 is a schematic structural view of a blocking valve and a steam distribution shaft according to the present invention;
FIG. 3 is a top view of the blocking valve and the steam distribution shaft of the present invention;
fig. 4 is a cross-sectional view of the blocking valve and the steam distribution shaft.
In the figure: 1. a cone plug; 2. a support rod; 3. a spring; 4. a hydraulic piston; 5. supporting channel steel; 6. an ear loop plate; 7. a force transmission annular plate; 8. a ball; 9. a steam exhaust main pipe; 10. a shaft floor; 11. reducing steel pipes; 12. a steam distribution flat pipe; 13. a shaft inner cylinder; 14. a shaft tube; 15. a gear; 16. a shaft seal; 17. a shaft dome; 18. a piston liquid inlet valve; 19. a push rod; 20. a grid trestle; 21. a protective rail; 22. an outer cylinder;
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, which illustrate but do not limit the invention.
As shown in fig. 2, a blocking valve of a steam distribution shaft comprises a movable plug and a shaft tube 14, wherein the movable plug is rotatably arranged on the outer side wall of an inner cylinder of the shaft, the movable plug is positioned between an outer cylinder 22 of the steam distribution shaft and the inner cylinder of the shaft, and the shaft tube 14 is used for driving the movable plug to move along the circumferential direction of the outer wall of the inner cylinder 13 of the shaft and blocking one steam distribution flat tube.
The movable plug comprises a cone plug 1, a spring 3, a hydraulic piston 4 and a top support channel steel 5.
The end of the cone plug 1 is connected with one end of the spring 3, the other end of the spring 3 is connected with the top support channel steel 5, and one end of the shaft tube 14 penetrates through the top support channel steel 5 and the spring 3 to be connected with the cone plug 1.
The top support channel steel 5 is U type structure, and the tip of spring 3 is connected with the top surface of top support channel steel 5, and its both sides backup pad is connected with the lateral wall of shaft inner tube 13, in order to reduce the friction force of top support channel steel 5 with shaft inner tube 13 in the rotation in-process, the tip of the backup pad of top support channel steel 5 still is provided with the power annular plate 7, has inlayed ball 8 on the side of power annular plate 7, and when movable plug at the in-process of circumference removal, ball 8 rolls on the lateral wall of shaft inner tube 13.
Meanwhile, the movable plug is prevented from moving up and down along the outer side wall of the vertical shaft inner barrel 13 to cause falling, a horizontal annular lug plate 6 is further arranged on the outer side wall, the lower end of the force transmission lug plate 7 is inlaid with balls, and the movable plug moves horizontally along the lug plate 6 through the balls so as to reduce friction resistance.
In order to ensure that the movable plug can keep a horizontal state, a supporting rod 2 is further arranged at the bottom of the cone plug 1, and universal rollers are arranged at the lower ends of the supporting rod, so that the supporting rod and the movable plug have following performance.
The outer cylinder 22 of the steam distribution vertical shaft is provided with a plurality of mounting holes which are annularly and uniformly distributed at the same height position and are connected with the steam distribution flat pipe 12, the outer side of each mounting hole is provided with a reducing steel pipe 11 which is a taper pipe, and the steam distribution flat pipe 12 is positioned at the outer side of the outer cylinder 22 and is connected with the small end of the reducing steel pipe.
The conical plug 1 is of a frustum structure, one end with a large diameter is connected with the spring 3, the inclined plane of the conical plug is matched with the inner wall of the variable-diameter steel pipe, based on the conical plug, the variable-diameter steel pipe is sealed by the inclined plane of the conical plug, the sealing performance is guaranteed, the bearing capacity is improved, and the end face of the conical plug 1 is further coated with a sealing rubber layer for improving the sealing performance.
The shaft tube 14 has a stepped structure and comprises a first section of tube, a second section of tube, a third section of tube and a fourth section of tube which are sequentially connected, wherein desalted water is injected into the shaft tube 14.
The upper end of the first section pipe of this central siphon 14 passes the top of shaft dome 17 perpendicularly, the part that first section pipe stretched out shaft dome 17 is connected with piston feed liquor valve 18, the one end of the second section pipe that the level set up is connected to the lower extreme of first section pipe, the other end of second section pipe sets up at the top of shaft inner tube 13 to can follow the top circumference of shaft inner tube 13 and remove, the upper end of the third section pipe of perpendicular setting is connected to the other end of second section pipe, the third section pipe is located the outside of shaft inner tube 13, the fourth section pipe of the lower extreme connection level of third section pipe, the fourth section pipe kind is provided with hydraulic piston 4, the tip of fourth section pipe passes jack-up channel steel 5 and spring 4 in proper order and welds with cone plug 1.
When one of the steam distribution flat pipes 12 is required to be isolated, the pressure is increased to the piston through the piston liquid inlet valve, the piston drives the cone plug 1 to be inserted into the mounting hole to seal the steam distribution flat pipe 12, and meanwhile, the spring is in a stretching state; when the steam distribution flat pipe 12 needs to work, the pressure is relieved through the piston liquid inlet valve, the spring contracts, and the cone plug 1 is separated from the mounting hole under the action of the contraction force.
In order to ensure the tightness of the steam distribution shaft, a shaft seal 16 is arranged between the first section pipe and the shaft dome 17.
The end of the first section pipe is further provided with a pushing rod 19, the pushing rod 19 is located at the top of the vertical shaft dome 17, and horizontal pushing force is applied to the pushing rod 19, so that the pushing rod drives the shaft pipe 14 to rotate, and then the movable plug is driven to rotate.
Further, in order to improve the stability of rotation and save more labor in rotation, a bearing is arranged on the second section tube of the shaft tube 14, a gear 15 is sleeved on the bearing, and tooth grooves are simultaneously arranged on the top surface of the inner barrel 13 of the vertical shaft and meshed with the gear grooves.
The top at shaft dome 17 still is provided with grid landing stage 20 and prevents railing 21, and operating personnel operates push rod 19 on grid landing stage 20, and is more safe high-efficient.
The working principle of the blocking valve of the steam distribution vertical shaft is explained in detail below.
As shown in fig. 3 and 4, the steam distribution vertical shaft is of a sealing structure and comprises an outer cylinder 22 and a vertical shaft inner cylinder 13 arranged in the outer cylinder, a vertical shaft dome 17 is arranged at the top of the outer cylinder 22, the outlet of a steam exhaust main pipe penetrates through a vertical shaft bottom plate 10 to send steam into the vertical shaft inner cylinder, the steam is uniformly conveyed to a plurality of steam distribution flat pipes across the top of the vertical shaft inner cylinder, and the circular area formed by the outer cylinder and the vertical shaft inner cylinder is equal to the bottom area of the vertical shaft inner cylinder.
When one of the steam distribution flat pipes needs to be maintained, an operator stands on the grid trestle 20 of the vertical shaft dome to operate the push rod 19, and the push rod 19 drives the rotating shaft 14 to rotate, so that the movable plug is aligned with the steam distribution flat pipe needing to be maintained. In the rotating process of the movable plug, the force transmission annular plate rotates along the circumferential direction of the outer wall of the vertical shaft inner cylinder through the side balls, and the balls at the lower end of the force transmission annular plate rotate along the horizontal plane of the earring plate.
Then, desalted water is injected into the shaft tube 14 through the piston liquid inlet valve 18, under the action of pressure, the hydraulic piston 4 moves horizontally, and then drives the cone plug to move, and meanwhile, the spring 3 is in a stretching state, after the side wall of the cone plug is completely attached to the inner wall of the reducing steel tube, sealing is completed, and at the moment, the thrust born by the cone plug is transmitted to the side wall of the shaft inner barrel through the force transmission annular plate.
After the maintenance is completed, the pressure is relieved for the shaft tube 14 through the piston liquid inlet valve 18, the cone plug is separated from the reducing steel tube under the action of the restoring force of the spring, and the spring returns to the initial position.
And (3) repeating the operation when maintaining the next steam distribution flat pipe.
The blocking valve is used for referencing a method for positioning the pressure expansion of a stent in medical science, adopts a structure that a plurality of valves share one valve core, and seals all the steam distribution flat pipes by one movable plug, so that the investment of a Hertz dry cooling system can be effectively reduced, and only one steam distribution flat pipe is required to be stopped during maintenance.
The above is only for illustrating the technical idea of the present invention, and therefore, the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The blocking valve of the gas distribution vertical shaft is characterized by comprising a shaft tube (14) with a hollow structure and a movable plug, wherein the movable plug is rotatably arranged on the outer side wall of an inner cylinder (13) of the vertical shaft, a plurality of gas distribution flat tubes (12) are uniformly distributed on an outer cylinder (22) of the gas distribution vertical shaft along the circumference, and the shaft tube (14) is used for driving the movable plug to seal one of the gas distribution flat tubes (12);
the movable plug comprises a plug, an elastic device, a hydraulic piston (4) and a jacking channel steel (5); the plugs and the jacking channel steel (5) are respectively arranged at two ends of the elastic device, and the jacking channel steel (5) is contacted with the outer wall of the shaft inner cylinder (13) and can move along the circumferential direction of the outer wall of the shaft inner cylinder;
the hydraulic piston (4) is arranged at one end of the shaft tube (14), the end part of the hydraulic piston (4) passes through the elastic device to be connected with the plug, the elastic device and the hydraulic medium filled in the shaft tube (14) respectively control the return and the extension of the hydraulic piston (4), and the other end of the shaft tube (14) passes through the shaft dome (17) of the gas distribution shaft to be connected with the driving device.
2. The choke valve of the steam distribution vertical shaft according to claim 1, characterized in that the outer cylinder (22) is provided with a reducing steel pipe (11), the reducing steel pipe (11) is a taper pipe, one end with a larger diameter is connected with the outer wall of the outer cylinder (22), and the steam distribution flat pipe (12) is connected with the outer cylinder (22) through the reducing steel pipe (11).
3. The choke valve of the steam distribution vertical shaft according to claim 2, wherein the choke plug is a cone choke plug (1), the side wall of the cone choke plug (1) is an inclined plane, a rubber sealing layer is further arranged on the inclined plane, and the inclined plane is matched with the inner wall of the reducing steel pipe (11).
4. The choke valve of a steam distribution shaft according to claim 1, characterized in that the shaft tube (14) is stepped and comprises a first section tube, a second section tube, a third section tube and a fourth section tube which are connected in sequence;
the center of shaft dome (17) is passed to the upper end of the first festival pipe that sets up perpendicularly, the lower extreme of first festival pipe is connected with the one end of the second festival pipe that the level set up, the other end of second festival pipe is located the top of shaft inner tube (13) to connect the upper end of the third festival pipe that sets up perpendicularly, the third festival pipe is located the outside of shaft inner tube (13), the lower extreme of third festival pipe is connected with the fourth festival pipe that the level set up, hydraulic piston (4) set up the tip at the fourth festival pipe, hydraulic piston (4) pass resilient means and are connected with the end cap.
5. A choke valve for a steam distribution shaft according to claim 4, characterized in that the part of the first section of pipe outside the shaft dome is provided with a piston inlet valve (18) for controlling the pressure-driven hydraulic piston action in the shaft pipe (14).
6. The blocking valve of the steam distribution vertical shaft according to claim 4, wherein a gear (15) is arranged on the second joint pipe, a tooth slot is arranged at the top of the inner cylinder (13) of the vertical shaft, and the gear (15) is meshed with the tooth slot and is used for enabling the movable plug to rotate along the side wall of the inner cylinder of the vertical shaft.
7. A choke valve for a steam distribution shaft according to claim 1, characterized in that the elastic means is a spring (3), the spring (3) being in tension when the choke plug is sealed against the steam distribution flat tube (12).
8. The choke valve of the steam distribution vertical shaft according to claim 1, characterized in that the elastic device is arranged on the end face of the supporting channel steel (5), the end parts of the two side plates of the supporting channel steel (5) are also provided with force transmission annular plates (7), the force transmission annular plates (7) are provided with balls (8), and the movable choke plug rotates along the circumference of the side wall of the vertical shaft inner cylinder (13) through the balls.
9. The blocking valve of the steam distribution vertical shaft according to claim 8, wherein the lower end of the force transmission annular plate (7) is further provided with balls, the side wall of the vertical shaft inner cylinder (13) is further provided with an annular lug plate (6), and the balls at the lower end of the force transmission annular plate (7) roll along the lug plate (6).
10. The choke valve of the steam distribution vertical shaft according to claim 1, wherein a supporting rod (2) for supporting the choke plug is further arranged at the bottom of the choke plug, rollers are arranged at the lower end of the supporting rod (2), and the supporting rod (2) and the choke plug move synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848073.4A CN108799560B (en) | 2018-07-27 | 2018-07-27 | Blocking valve of steam distribution vertical shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848073.4A CN108799560B (en) | 2018-07-27 | 2018-07-27 | Blocking valve of steam distribution vertical shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108799560A CN108799560A (en) | 2018-11-13 |
| CN108799560B true CN108799560B (en) | 2023-11-03 |
Family
ID=64078541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810848073.4A Active CN108799560B (en) | 2018-07-27 | 2018-07-27 | Blocking valve of steam distribution vertical shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799560B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1336721A2 (en) * | 2000-03-24 | 2003-08-20 | FMC Technologies, Inc. | Tubing head seal assembly |
| CN1470788A (en) * | 2003-06-22 | 2004-01-28 | 曹鹤平 | Conical-core rotary multi-ported valve |
| CN201896967U (en) * | 2010-12-15 | 2011-07-13 | 青岛四方车辆研究所有限公司 | Double pneumatic control pressure difference function valve |
| CN204459328U (en) * | 2015-03-16 | 2015-07-08 | 成都迅航机电有限公司 | Safety valve |
| DE102014014964A1 (en) * | 2014-10-14 | 2016-04-14 | Henzel Formenbau Gmbh | Multi-way valve for controlling fluid circuits |
| KR20180027089A (en) * | 2016-09-06 | 2018-03-14 | 성도밸브 (주) | Sealing apparatus for butterfly valve |
| CN208595258U (en) * | 2018-07-27 | 2019-03-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of blocking valve with vapour vertical shaft |
-
2018
- 2018-07-27 CN CN201810848073.4A patent/CN108799560B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1336721A2 (en) * | 2000-03-24 | 2003-08-20 | FMC Technologies, Inc. | Tubing head seal assembly |
| CN1470788A (en) * | 2003-06-22 | 2004-01-28 | 曹鹤平 | Conical-core rotary multi-ported valve |
| CN201896967U (en) * | 2010-12-15 | 2011-07-13 | 青岛四方车辆研究所有限公司 | Double pneumatic control pressure difference function valve |
| DE102014014964A1 (en) * | 2014-10-14 | 2016-04-14 | Henzel Formenbau Gmbh | Multi-way valve for controlling fluid circuits |
| CN204459328U (en) * | 2015-03-16 | 2015-07-08 | 成都迅航机电有限公司 | Safety valve |
| KR20180027089A (en) * | 2016-09-06 | 2018-03-14 | 성도밸브 (주) | Sealing apparatus for butterfly valve |
| CN208595258U (en) * | 2018-07-27 | 2019-03-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of blocking valve with vapour vertical shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108799560A (en) | 2018-11-13 |
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