CN108626425B - High-temperature high-pressure regulating gate valve - Google Patents

High-temperature high-pressure regulating gate valve Download PDF

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Publication number
CN108626425B
CN108626425B CN201810679345.2A CN201810679345A CN108626425B CN 108626425 B CN108626425 B CN 108626425B CN 201810679345 A CN201810679345 A CN 201810679345A CN 108626425 B CN108626425 B CN 108626425B
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China
Prior art keywords
valve
valve body
rod
plate
pressure regulating
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Application number
CN201810679345.2A
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Chinese (zh)
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CN108626425A (en
Inventor
王秋林
龚长龙
刘其斌
顾朝党
田峰
孟庆银
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SHANGHAI VALVE FACTORY CO Ltd
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SHANGHAI VALVE FACTORY CO Ltd
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Priority to CN201810679345.2A priority Critical patent/CN108626425B/en
Publication of CN108626425A publication Critical patent/CN108626425A/en
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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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
    • F16K3/20—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the seats
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/04—Arrangements for preventing erosion, not otherwise provided for
    • 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
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • 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
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0263—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor using particular material or covering means
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/32—Means for additional adjustment of the rate of flow

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve Housings (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses a high-temperature high-pressure regulating gate valve which can be used on a pipeline with high temperature and high pressure, low flow resistance and linear increment of a fluid medium; the valve body can be maintained and replaced under the condition that the valve body is not removed from a pipeline; the valve body seal head and the baffle plate can effectively reduce vortex formed in the valve and reduce pressure loss; the valve rod is connected with the valve plate through the hanging bracket, so that the phenomenon that the bending torque of the valve rod is increased due to warping can be solved; the inclined plane at the top of the valve cover can effectively avoid the bottom of the sealing ring from being damaged due to stress deformation; the two-section valve rod structure of the upper valve rod and the lower valve rod can solve the problem that the electric actuator is damaged due to the high temperature of the valve rod; the flow through hole of the valve plate of the gate valve can be adjusted according to the flow change requirement of a user so as to meet the working condition requirement.

Description

High-temperature high-pressure regulating gate valve
Technical Field
The invention relates to a high-temperature high-pressure regulating gate valve used in the field of valves.
Background
The action principle of the common electric single-seat regulating valve is that 4-20 mA electric signals are input to an electric actuating mechanism, and valve clacks are opened at different heights according to different input signals, so that the flow area enclosed by a valve seat and the valve clacks is changed, and the flow rate of a pipeline is correspondingly changed to meet the demands of users. The structure has the defects that: 1. not resistant to high temperature and high pressure; 2. because the general structure is an S-shaped runner or an angle runner structure, the flow resistance of the valve is larger; 3. the coaxiality requirement of the valve seat and the valve cover is high, otherwise, the valve rod is tilted to increase the opening and closing moment of the valve; 4. the valve clack erodes seriously under high pressure. The action principle of the common general flat valve is that the valve plate is pushed by the acting force of a medium and the pretightening force, and the valve plate generates micro displacement along the horizontal direction and is attached to a valve seat behind the valve to meet the sealing requirement, and the structure has the defects that: 1. the valve seat and the valve body are welded after the valve is arranged, so that once the sealing surface is damaged, the valve seat cannot be maintained on line, the valve seat cannot be replaced, the valve is detached from the pipeline for maintenance, and even the whole valve is transported back to a valve factory for maintenance, thereby greatly wasting maintenance time and increasing maintenance cost; 2. the cavity space in the valve is large, vortex is formed, and the flow resistance of the valve is increased; 3. not resistant to high temperature and high pressure erosion; 4. the temperature resistance requirement on the actuating mechanism is high; 5. the bottom of the valve middle cavity sealing ring is easy to damage; 6. the flow of the pipeline medium cannot be changed as required.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a high-temperature high-pressure regulating gate valve which can maintain or replace internal parts of a valve without detaching the valve from a pipeline, and meanwhile, the gate valve can reduce internal vortex of the valve, resist medium erosion, reduce flow resistance of the valve, prolong service life of a sealing ring, reduce damage of medium temperature to a valve actuating mechanism and accurately control and regulate the flow of pipeline medium according to the requirement of a customer.
The technical scheme for achieving the purpose is as follows: a high-temperature high-pressure regulating gate valve comprises a valve body, a valve body seal head, a valve plate, a valve seat sealing assembly behind the valve, a valve seat sealing assembly in front of the valve, a valve rod assembly, a valve cover and an electric actuating mechanism;
the valve body seal head is welded at the bottom of the valve body;
the valve plate is inserted in the center of the valve body, a flow opening is formed in the bottom of the valve plate, and the flow opening enables the flow of the valve to be in direct proportion to the stroke of the valve plate;
the valve seat sealing assembly comprises a valve seat, a sealing gasket, a valve back lock nut and a valve back positioning pin, wherein the sealing gasket is arranged between the valve seat and the valve body;
the valve seat sealing assembly comprises a disc spring, a valve seat, a valve lock nut and a valve lock pin, wherein the disc spring is arranged between the valve seat and the valve body, the valve lock nut and the valve body are connected through threads to fasten the valve seat on the valve body and compress the disc spring, and the valve lock nut is provided with the valve lock pin to fix the valve lock nut;
the valve rod assembly comprises a hanging bracket, a lower valve rod and an upper valve rod, wherein the hanging bracket is connected with the lower valve rod and is connected with the valve plate through a pin shaft;
the valve rod assembly comprises a hanging bracket, a lower valve rod, an upper valve rod and a connecting sleeve, wherein the hanging bracket is connected with the bottom end of the lower valve rod and is connected with the valve plate through a pin shaft; the valve cover is arranged at the top of the valve body, and a sealing ring, a compression ring and a four-way ring are sequentially arranged in a fit gap between the valve cover and the valve body from inside to outside; the lower valve rod upwards passes through the valve cover, and the upper valve rod is connected with the lower valve rod through the connecting sleeve;
the electric actuating mechanism is connected with the upper valve rod.
Furthermore, baffles are arranged on two sides of the flashboard, the upper ends of the two baffles are supported by the support rods, and the lower ends of the two baffles are fixed on the valve body by bolts.
Still further, two flat plates are symmetrically arranged in the valve body seal head, and the lower end of the baffle is inserted into the gap between the two flat plates.
Further, hard alloy is sprayed on the surface of the valve plate.
Further, the contact surface of the valve cover and the sealing ring is an inclined surface.
Further, a limit indication block is arranged on the upper valve rod.
The high-temperature high-pressure regulating gate valve can be used for a pipeline with the requirements of high temperature and high pressure, low flow resistance and linear increment of a fluid medium; the valve body can be maintained and replaced under the condition that the valve body is not removed from a pipeline; the valve body seal head and the baffle plate can effectively reduce vortex formed in the valve and reduce pressure loss; the valve rod is connected with the valve plate through the hanging bracket, so that the phenomenon that the bending torque of the valve rod is increased due to warping can be solved; the inclined plane at the top of the valve cover can effectively avoid the bottom of the sealing ring from being damaged due to stress deformation; the two-section valve rod structure of the upper valve rod and the lower valve rod can solve the problem that the electric actuator is damaged due to the high temperature of the valve rod; the flow through hole of the valve plate of the gate valve can be adjusted according to the flow change requirement of a user so as to meet the working condition requirement.
Drawings
FIG. 1 is a schematic diagram of a high temperature and high pressure regulating gate valve according to the present invention;
fig. 2 is a schematic structural diagram of a valve body seal head of the high-temperature high-pressure regulating gate valve;
FIG. 3 is a schematic view of the installation of a valve seat behind a high temperature, high pressure regulating gate valve of the present invention;
FIG. 4 is a schematic view showing the installation of a valve seat of a high temperature high pressure regulating gate valve according to the present invention;
FIG. 5 is a schematic view of a valve plate of a high temperature and high pressure regulating gate valve according to the present invention, wherein the flow rate of medium in a valve line using the gate plate is proportional to the stroke of the gate plate;
FIG. 6 is a schematic view of the installation of a lower valve stem, hanger, pin and valve plate of a high temperature and high pressure regulating gate valve of the present invention;
fig. 7 is a schematic installation view of a valve cover and a valve cover sealing structure of a high-temperature high-pressure regulating gate valve according to the present invention.
Detailed Description
For a better understanding of the technical solutions of the present invention, the following detailed description is made with reference to the following specific examples and accompanying drawings:
referring to fig. 1, the high-temperature high-pressure regulating gate valve of the present invention includes a valve body 3, a valve body head 1, a valve plate 2, a valve seat sealing assembly after valve, a valve seat sealing assembly before valve, a valve rod assembly, a valve cover 16 and an electric actuator 32.
The valve body seal head 1 is welded at the bottom of the valve body 3. The valve body seal head 1 facilitates casting of the valve body 3, and prevents vortex formed by the lower middle cavity of the valve body 3 from causing flow resistance increase. Referring to fig. 2, the valve body seal head 1 is integrally molded, two symmetrical flat plates are arranged in the valve body seal head 1, and reinforcing ribs are arranged on two sides of each flat plate to strengthen the flat plates so as to prevent the flat plates from being deformed due to the impact of a medium or the influence of temperature.
In order to solve the problem that the valve can not be maintained on line, the high-temperature high-pressure regulating gate valve adopts the detachable valve back valve seat sealing component and the valve front valve seat sealing component, and the valve can be directly disassembled, maintained and replaced on line without taking down the valve from a pipeline.
Referring to fig. 3, the valve seat seal assembly includes a valve seat 4, a first sealing gasket 7, a second sealing gasket 8, a valve lock nut 9-1 and a valve positioning pin 11-1. A first sealing gasket 7 and a second sealing gasket 8 are arranged between the valve back valve seat 4 and the valve body 3, and the valve back locking nut 9-1 is in threaded connection with the valve body 3 to fasten the valve back valve seat 4 on the valve body 3. The front end of the valve back lock nut 9-1 is provided with a groove which is convenient to install and detach. The valve back locking nut 9-1 acts on the valve back valve seat 4, the valve back valve seat 4 acts on the first sealing gasket 7 and the second sealing gasket 8, the first sealing gasket 7 and the second sealing gasket 8 act on the valve body 3, and sealing between the valve back valve seat 4 and the valve body 3 can be realized by screwing the valve back locking nut 9-1. In order to prevent the valve from being loosened and causing internal leakage of the valve due to long-time use of the valve back locking nut 9-1 and the valve body 3, the valve body 3 is provided with a valve back positioning pin 11-1 for fixing the valve back locking nut 9-1. Once the valve seat 4 needs to be maintained, the valve top parts including the valve cover 16 can be sequentially removed, the valve plate 2 is pulled out, the valve positioning pin 11-1 is removed, the valve locking nut 9-1 is screwed out, and the valve seat 4 is taken out for corresponding maintenance or replacement.
Referring to fig. 4, the valve seat seal assembly includes a disc spring 5, a valve seat 6, a valve lock nut 9-2, and a valve pilot pin 11-2. The disc spring 5 is arranged between the valve front valve seat 6 and the valve body 3, the valve front locking nut 9-2 is screwed to fasten the valve front valve seat 6 on the valve body 3, and the disc spring 5 is compressed. The valve plate 2 is put down, and at the moment, a gap exists between the valve front valve seat 6 and the valve plate 2, so that the initial sealing of the valve cannot be met, and the valve front locking nut 9-2 is loosened until the rear ends of the surfacing sealing surfaces of the valve front valve seat 6 are flush. A valve front positioning pin 11-2 is installed on the valve body 3 to prevent the valve front lock nut 9-2 from loosening. Therefore, the valve front valve seat 6 is pushed to the valve plate 2 under the action of the disc spring 5, and the valve plate 2 is stressed to generate micro displacement to press on the valve rear valve seat 4, so that the valve initial sealing requirement is met. The disc spring is still compressed enough to meet the initial sealing thrust of the valve. And the disassembly and maintenance of the valve front valve seat sealing assembly are the same as those of the valve rear valve seat sealing assembly.
The valve plate 2 is inserted in the valve to control the flow of the medium in the pipeline. Referring to fig. 5, special flow openings are designed on the valve plate 2 to meet the requirements of different flow rates. In this embodiment, the flow openings of the valve plate 2 are such that the flow of medium in the conduit is proportional to the stroke of the shutter plate 2. The flow opening can also be designed to be a percentage type, a quick opening type or a parabolic type according to the requirements of users, wherein the relative relation between the flow of the medium in the pipeline and the stroke of the flashboard 2 is formed. The hard alloy is sprayed on the surface of the valve plate 2 and the flow surface to increase the erosion resistance of the valve plate to the medium. Baffle plates 14 are arranged on two sides of the flashboard 2, and the two baffle plates 14 reduce the space of the middle cavity of the valve, so that vortex generated by fluid in the middle of the valve cavity is effectively reduced. The upper ends of the two baffles 14 are supported by the supporting rods 15 to prevent the baffles 14 from displacement or deformation caused by temperature and medium impact, and the lower ends of the two baffles 14 are fixed on the valve body 3 by bolts. The baffle 14 is inserted into the inner side of the flat plate, so that the requirement on machining errors is reduced, and medium entering the valve inner cavity from the joint can be reduced.
A valve stem assembly, a hanger 12, a lower valve stem 13, an upper valve stem 30 and a nipple 25. Referring to fig. 6, the hanger 12 is connected with the lower valve rod 13, and is connected with the valve plate 2 through the pin shaft 10, the valve plate 2 generates micro displacement along the axial direction of the pin shaft 10 under the action of medium, the valve seat 4 after the valve is attached to the valve achieves the sealing requirement, and meanwhile, the bending deformation caused by the fact that the lower valve rod 13 is directly acted by the medium is avoided, and the opening and closing moment of the valve is increased.
Referring to fig. 7, the valve cover 16 is disposed at the top of the valve body 3, and a sealing ring 17, a compression ring 18 and a tetra-ring 19 are sequentially disposed in a fit gap between the valve cover 16 and the valve body 3 from inside to outside, so as to prevent the bottom of the sealing ring 17 from being damaged due to deformation under stress, and a contact surface between the valve cover 16 and the sealing ring 17 is an inclined surface. The lower stem 13 passes upwardly through the bonnet 16 and the upper stem 30 is connected to the lower stem 13 by the nipple 25. An electric actuator 32 is connected to the upper valve stem 30. The valve rod structure with the upper section and the lower section can protect the electric actuating mechanism 32 of the valve under the high-temperature working condition. In order to prevent the valve rod from rotating and facilitate mechanical limiting, a limiting indicating block 27 is arranged on the upper valve rod 30, so that the valve rod can be effectively prevented from being damaged due to rotation, and mechanical limiting of the valve switch position is realized.
The assembly flow of the high-temperature high-pressure regulating gate valve is as follows.
1. The valve body seal head 1 is welded on the valve body 3.
2. A first sealing gasket 7 and a second sealing gasket 8 are placed on the valve body 3. The valve seat 4 is pressed against the first sealing gasket 7 and the second sealing gasket 8, and the valve seat 4 is locked by the valve lock nut 9-1.
3. The disc spring 5 is placed in the valve body. The valve front seat 6 is pressed against the disc spring, and the valve front seat 6 is locked by the valve front lock nut 9-2.
4. The lower valve rod 13 is connected with the hanging bracket 12 and is connected with the valve plate 2 through the pin shaft 10, and is placed into the valve body 3.
5. The valve front lock nut 9-2 is rotated so that the valve front valve seat 5 presses the valve plate 2.
6. The valve back positioning pin 11-1 and the valve front positioning pin 11-2 are installed, so that the valve back locking nut 9-1 and the valve front locking nut 9-2 are prevented from loosening due to vibration generated by medium flow.
7. The baffle 14 is installed and fixed on the valve body through the supporting column 15 and bolts.
8. The valve cover 16, the sealing ring 17, the compression ring 18 and the tetrad ring 19 are sequentially placed in the valve body 3.
9. The lower support plate 20 is mounted on the valve body 3 and fixed by bolts. The cap 16 is tightened and fixed to the lower support plate 20 by bolts.
10. The packing, spacer ring 21, packing press sleeve 22, top disc spring 23 and packing press plate 24 are mounted on the valve cover 16 in this order.
11. The support shaft 28, the guide shaft 29, and the lower support plate 20 are mounted.
12. The nipple 25 is screwed onto the lower stem 13, and the upper stem 30, and cap 27, are in turn connected to the nipple 25.
13. The clamping plate 26 is connected to the upper valve stem, the guide shaft 29.
14. The upper support plate 31 is connected to the support shaft 28 and the guide shaft 29, and an electric actuator 32 is assembled.
The high-temperature high-pressure regulating gate valve has the advantages that the valve runner is a direct-current runner, the resistance of the runner structure to medium movement is minimum, the baffle plate arranged in the valve middle cavity blocks the medium to form vortex in the valve middle cavity, and the flow resistance of the valve is reduced. By inputting 4-20 mA electric signals to the electric actuator 32, the electric actuator 32 outputs torque to drive the valve rod to ascend or descend, and the valve rod ascends and descends to drive the valve plate 2 to move up and down. Because the valve plate 2 is provided with the flow passage holes, the through area surrounded by the flow passage holes and the valve seat can be changed along with the lifting change of the valve plate, so that the valve medium flow is regulated to meet the user requirement.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.

Claims (6)

1. The utility model provides a high temperature high pressure regulating gate valve, includes valve body, valve body head, valve plate, valve disk seat seal assembly before the valve, valve rod assembly, valve gap and electric actuator, its characterized in that:
the valve body seal head is welded at the bottom of the valve body;
the valve plate is inserted in the center of the valve body, a flow opening is formed in the bottom of the valve plate, and the flow opening enables the flow of the valve to be in direct proportion to the stroke of the valve plate;
the valve seat sealing assembly comprises a valve seat, a sealing gasket, a valve back lock nut and a valve back positioning pin, wherein the sealing gasket is arranged between the valve seat and the valve body;
the valve seat sealing assembly comprises a disc spring, a valve seat, a valve lock nut and a valve lock pin, wherein the disc spring is arranged between the valve seat and the valve body, the valve lock nut and the valve body are connected through threads to fasten the valve seat on the valve body and compress the disc spring, and the valve lock nut is provided with the valve lock pin to fix the valve lock nut;
the valve rod assembly comprises a hanging bracket, a lower valve rod, an upper valve rod and a connecting sleeve, wherein the hanging bracket is connected with the bottom end of the lower valve rod and is connected with the valve plate through a pin shaft; the valve cover is arranged at the top of the valve body, and a sealing ring, a compression ring and a four-way ring are sequentially arranged in a fit gap between the valve cover and the valve body from inside to outside; the lower valve rod upwards passes through the valve cover, and the upper valve rod is connected with the lower valve rod through the connecting sleeve;
the electric actuating mechanism is connected with the upper valve rod.
2. The high-temperature and high-pressure regulating gate valve according to claim 1, wherein two sides of the valve plate are provided with baffle plates, the upper ends of the two baffle plates are supported by a supporting rod, and the lower ends of the two baffle plates are fixed on the valve body by bolts.
3. The high-temperature high-pressure regulating gate valve according to claim 2, wherein two flat plates are symmetrically arranged in the valve body seal head, and the lower end of the baffle is inserted into a gap between the two flat plates.
4. The high temperature and high pressure regulating gate valve of claim 1, wherein said valve plate has cemented carbide sprayed onto its surface.
5. The high temperature and high pressure regulating gate valve of claim 1, wherein the contact surface of said valve cover and said seal ring is a beveled surface.
6. The high temperature and high pressure regulating gate valve of claim 1, wherein the upper valve rod is provided with a limit indicating block.
CN201810679345.2A 2018-06-27 2018-06-27 High-temperature high-pressure regulating gate valve Active CN108626425B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810679345.2A CN108626425B (en) 2018-06-27 2018-06-27 High-temperature high-pressure regulating gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810679345.2A CN108626425B (en) 2018-06-27 2018-06-27 High-temperature high-pressure regulating gate valve

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CN108626425A CN108626425A (en) 2018-10-09
CN108626425B true CN108626425B (en) 2024-01-16

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Publication number Priority date Publication date Assignee Title
US11649898B2 (en) * 2021-02-05 2023-05-16 Saudi Arabian Oil Company Valve stem retainer device, system, and method for installing the same

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CN202065513U (en) * 2011-03-18 2011-12-07 赵安东 High-temperature, high-pressure and high-pressure differential throttle valve
CN102748489A (en) * 2012-07-18 2012-10-24 无锡杰尔压缩机有限公司 V-shaped flow adjusting valve
CN206175689U (en) * 2016-09-22 2017-05-17 成都乘风阀门有限责任公司 Slide valve disk seat mounting structure
CN207018556U (en) * 2017-07-04 2018-02-16 成都乘风阀门有限责任公司 Can on-line maintenance upper dress flat gate valve
CN208565613U (en) * 2018-06-27 2019-03-01 上海阀门厂股份有限公司 A kind of high temperature and pressure regulation gate valve

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Publication number Priority date Publication date Assignee Title
RU63893U1 (en) * 2007-01-09 2007-06-10 Закрытое акционерное общество Научно-производственная фирма "Центральное конструкторское бюро арматуростроения" GATE VALVE
CN101929556A (en) * 2010-07-16 2010-12-29 上海以琳石油机械制造有限公司 High-temperature gate valve of combined wedge plate
CN202065513U (en) * 2011-03-18 2011-12-07 赵安东 High-temperature, high-pressure and high-pressure differential throttle valve
CN102748489A (en) * 2012-07-18 2012-10-24 无锡杰尔压缩机有限公司 V-shaped flow adjusting valve
CN206175689U (en) * 2016-09-22 2017-05-17 成都乘风阀门有限责任公司 Slide valve disk seat mounting structure
CN207018556U (en) * 2017-07-04 2018-02-16 成都乘风阀门有限责任公司 Can on-line maintenance upper dress flat gate valve
CN208565613U (en) * 2018-06-27 2019-03-01 上海阀门厂股份有限公司 A kind of high temperature and pressure regulation gate valve

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