CN106763848B - Double-wedge-face movable gate plate set driven by machinery and internal pressure - Google Patents
Double-wedge-face movable gate plate set driven by machinery and internal pressure Download PDFInfo
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- CN106763848B CN106763848B CN201710010208.5A CN201710010208A CN106763848B CN 106763848 B CN106763848 B CN 106763848B CN 201710010208 A CN201710010208 A CN 201710010208A CN 106763848 B CN106763848 B CN 106763848B
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- flashboard
- movable
- valve
- gate
- gate plate
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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
- 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
- F16K3/12—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 wedge-shaped arrangements of sealing faces
- F16K3/14—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 wedge-shaped arrangements of sealing faces with special arrangements for separating the sealing faces or for pressing them together
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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
- 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
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A double wedge movable gate group driven by mechanical and internal pressure comprises: valve rod, spring holder, position sleeve, flashboard body, first movable flashboard, guide's flashboard, disk seat, pressure plate ring, second movable flashboard and valve rear seat before the valve. The double-gate movable plate structure is adopted. The movable flashboard is controlled by the pilot flashboard, so that the opening and closing torque of the whole valve is reduced, and the stability and the safety of the valve are improved. Almost no friction force exists between the movable flashboard and the valve seat, and the friction force is smaller because the contact area between the pilot flashboard and the movable flashboard is small, so that the friction force is obviously reduced compared with the traditional flashboard. The guide flashboard is hung on the valve rod in a T-shaped groove mode, and once the valve rod is worn, the guide flashboard is convenient to disassemble and quick to replace.
Description
Technical Field
The invention belongs to the technical field of totally-enclosed electric gate valves for a nuclear reactor primary circuit system, and particularly relates to a double-wedge-surface movable gate plate group driven by machinery and internal pressure.
Background
The traditional electric gate valve utilizes a motor and a speed reducing mechanism to drive a screw rod to rotate and output torque to lift or push down a fixed gate plate, so that the opening and closing functions of the gate valve are realized. The traditional gate valve adopts a double-gate plate or single-gate plate structure, the gate plate is directly sealed with a valve seat, and the gate valve is opened and closed by opening and closing the gate plate. The structure enables the contact area between the flashboard and the valve seat to be large, the friction torque to be large, the flashboard and the valve seat to be easy to wear, the service life is short, and once the valve seat is seriously worn, the maintenance is inconvenient, the replacement is difficult to operate, and the cost is very high. In addition, because some application working conditions need a large pressure difference opening and closing requirement, the medium pressure on the gate plate of the gate valve and the friction force between the gate plate and the valve seat are very huge, and in order to overcome the external force on the gate plate, the electric device of the gate valve is required to output a very large moment to realize the opening and closing function of the gate plate, so that the valve rod of the gate valve bears very high torsional stress and tensile stress, and the gate valve is very easy to damage. Now, a new structure to solve these problems is urgently needed.
Disclosure of Invention
A double-wedge-face movable gate plate group driven by machinery and internal pressure adopts a multi-gate plate structure and comprises a double-movable gate plate, a pilot gate plate, a gate plate body and the like. The movable flashboard is controlled by the pilot flashboard, so that the opening and closing torque of the whole valve is reduced, and the stability and the safety of the valve are improved. When the valve is opened, the actuator drives the valve rod to lift the pilot flashboard to open first, the movable flashboard is separated from the valve seat, the actuator drives the flashboard component to move upwards, and the valve is opened. When the valve is closed, the actuating mechanism drives the valve rod to push the movable flashboard component to move downwards, when the valve rod reaches the lower limit position (closing position), the movable flashboard body stops moving, the valve rod continues to push the pilot flashboard to extrude the movable flashboard, and the valve is closed. Through adopting this kind of guide's formula flashboard group structure, rationally reduced the frictional force between flashboard and disk seat, solved the flashboard scuffing serious, life is short, the easy fracture scheduling problem of valve rod.
Adopts the technical proposal
A double wedge movable gate group driven by mechanical and internal pressure comprises: the valve comprises a valve rod, a spring seat, a positioning sleeve, a gate plate body, a first movable gate plate, a pilot gate plate, a first gate plate ring, a second gate plate ring, a valve front valve seat, a valve rear valve seat and a second movable gate plate;
the pilot flashboard is arranged from the upper end hole of the flashboard body;
the lower end of the positioning sleeve is arranged from the upper port of the flashboard body, and the positioning sleeve is fixedly connected with the flashboard body; the lower end of the spring seat is arranged from the upper port of the flashboard body, the lower end of the spring seat props against the upper end of the positioning sleeve, and the spring seat is fixedly connected with the flashboard body;
the lower end of the spring is propped against the second surface of the spring seat;
the lower end of the valve rod penetrates through an upper end hole of the spring, an upper end hole of the spring seat and an upper end hole of the positioning sleeve, the lower end of the valve rod is placed in a T-shaped groove in the upper portion of the pilot flashboard, and the upper end of the spring abuts against the first surface of the valve rod;
the second flashboard ring is arranged in the first groove of the first movable flashboard;
the right end of the first movable flashboard is arranged from the left port of the flashboard body;
the first flashboard ring is arranged in the second groove of the second movable flashboard;
the left end of the second movable flashboard is arranged in from the right port of the flashboard body;
the lower part of the valve rod, the lower part of the positioning sleeve, the lower part of the gate plate body, the first movable gate plate and the second movable gate plate are arranged between the front valve seat and the rear valve seat of the valve;
the left end face of the first movable flashboard props against the right end face of the front valve seat of the valve; the right end face of the second movable flashboard props against the left end face of the valve rear valve seat;
the left end surface of the pilot flashboard props against the right end surface of the first movable flashboard; the right end surface of the pilot flashboard props against the left end surface of the second movable flashboard;
the gate plate body, the first gate plate ring, the second gate plate ring, the first movable gate plate, the second movable gate plate and the positioning sleeve are enclosed to form a gate plate body cavity, and the pilot gate plate is positioned in the gate plate body cavity; and a hole for communicating the cavity of the flashboard with the outside of the cavity is formed in the second movable flashboard, and the pilot flashboard can open or block the hole in the second movable flashboard.
Advantages of the invention
1. This structure has reduced the frictional force in the whole gate valve opening/closing process. The structure changes the friction force between the prior gate plate and the valve seat into the friction force between the pilot gate plate and the movable gate plate. The friction area is greatly reduced, so that the friction force is greatly reduced, and the efficiency of the whole valve is improved. Meanwhile, friction between the movable flashboard and the valve seat is basically avoided in the structure, the flashboard is prevented from being seriously scratched, and the service life of the flashboard is prolonged.
2. The stability and the safety of the valve rod are improved. The moment required to be provided for the gate plate is reduced due to the fact that the friction force of the gate plate is greatly reduced, the force required to be borne by the valve rod is reduced, the risk of breakage of the valve rod is obviously reduced, and the stability and the safety of the valve rod are improved.
3. The maintenance is convenient. The guide flashboard is hung on the valve rod in a T-shaped groove mode, and once the valve rod is worn, the guide flashboard is convenient to disassemble and quick to replace.
Drawings
FIG. 1 is an assembly of a double wedge face movable gate plate set driven by mechanical and internal pressure
A schematic diagram;
FIG. 2 is a schematic structural view of a shutter body;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a left side view of FIG. 2;
FIG. 5 is a schematic structural view of a first movable gate plate;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a cross-sectional view B-B of FIG. 5;
FIG. 8 is a schematic structural view of a second movable gate plate;
FIG. 9 is a top view of FIG. 8;
FIG. 10 is a cross-sectional view C-C of FIG. 8;
FIG. 11 is a valve stem configuration and position identification view;
FIG. 12 is a diagram of the structure and position of a spring seat.
Detailed Description
A double wedge movable gate group driven by mechanical and internal pressure comprises: the valve comprises a valve rod 1, a spring 2, a spring seat 3, a positioning sleeve 4, a gate plate body 5, a first movable gate plate 6, a pilot gate plate 7, a first gate plate ring 8, a second gate plate ring 9, a front valve seat 10, a rear valve seat 11 and a second movable gate plate 12; the method is characterized in that:
the pilot flashboard 7 is inserted from the upper end hole of the flashboard body 5;
the lower end of the positioning sleeve 4 is arranged in from the upper port of the flashboard body 5, and the positioning sleeve 4 is fixedly connected with the flashboard body 5; the lower end of the spring seat 3 is placed in from the upper port of the flashboard body 5, the lower end of the spring seat 3 props against the upper end of the positioning sleeve 4, and the spring seat 3 is fixedly connected with the flashboard body 5;
the lower end of the spring 2 abuts against the second surface 16 of the spring seat 3;
the lower end of the valve rod 1 penetrates through an upper end hole of the spring 2, an upper end hole of the spring seat 3 and an upper end hole of the positioning sleeve 4, the lower end part of the valve rod 1 is arranged in a T-shaped groove in the upper part of the pilot flashboard 7, and the upper end of the spring 2 props against a first surface 15 of the valve rod 1;
the second flashboard ring 9 is arranged in the first groove 13 of the first movable flashboard 6;
the right end of the first movable flashboard 6 is arranged from the left port of the flashboard body 5;
the first flashboard ring 8 is arranged in a second groove 14 of the second movable flashboard 12;
the left end of the second movable flashboard 12 is arranged from the right port of the flashboard body 5;
the lower part of the valve rod 1, the lower part of the positioning sleeve 4, the lower part of the gate plate body 5, the first movable gate plate 6 and the second movable gate plate 12 are arranged between the valve front valve seat 10 and the valve rear valve seat 11;
the left end surface of the first movable flashboard 6 props against the right end surface of the front valve seat 10; the right end face of the second movable flashboard 12 is propped against the left end face of the valve rear valve seat 11;
the left end surface of the pilot flashboard 7 props against the right end surface of the first movable flashboard 6; the right end surface of the pilot flashboard 7 props against the left end surface of the second movable flashboard 12;
the gate plate body 5, the first gate plate ring 8, the second gate plate ring 9, the first movable gate plate 6, the second movable gate plate 12 and the positioning sleeve 4 are enclosed into a gate plate body cavity, and the pilot gate plate 7 is positioned in the gate plate body cavity; the second movable gate plate 12 is provided with a hole for communicating the cavity of the gate plate with the outside of the cavity, and the pilot gate plate 7 can open or close the hole on the second movable gate plate 12.
Principle of operation
According to the double-wedge-face movable gate plate set driven by machinery and internal pressure, the movable gate plate is pushed by the wedge-shaped structure of the pilot gate plate in a valve closing state, and the tight closing state is kept. When the valve is opened, the actuator drives the valve rod to move upwards to lift the pilot gate plate, when the pilot gate plate is separated from the movable gate plate, the hole on the second gate plate is opened, medium in the cavity of the gate plate flows out from the pilot hole of the rear gate plate of the valve, so that the pressure in the cavity of the gate plate is lower than that outside the cavity, the movable valve plate moves towards the inner side of the cavity of the valve plate under the action of pressure to leave the valve seat, the gate valve is opened, and the valve rod continues to lift the pilot gate plate upwards to be in a full-. When the valve is closed, the valve rod pushes the pilot flashboard to move downwards, the force of the valve rod indirectly acts on the flashboard body through the spring, so that the valve rod and the flashboard body move downwards simultaneously, when the lower limit position (the closed valve position) is reached, the flashboard body is limited and stops moving, the valve rod pushes the pilot flashboard to continue moving downwards, the wedge angle extrudes the movable flashboard, the movable flashboard moves towards two sides and is attached to the valve seat, meanwhile, the hole in the second flashboard is sealed, and the valve is closed. In the whole process, the movable flashboard and the valve seat almost have no friction force, and the friction force is smaller because the contact area between the pilot flashboard and the movable flashboard is small, so that the friction force is obviously reduced compared with the traditional flashboard.
Claims (1)
1. A double wedge movable gate group driven by mechanical and internal pressure comprises: the valve comprises a valve rod (1), a spring (2), a spring seat (3), a positioning sleeve (4), a flashboard body (5), a first movable flashboard (6), a pilot flashboard (7), a first flashboard ring (8), a second flashboard ring (9), a front valve seat (10), a rear valve seat (11) and a second movable flashboard (12); the method is characterized in that:
the pilot flashboard (7) is arranged in from the upper end hole of the flashboard body (5);
the lower end of the positioning sleeve (4) is arranged in from the upper port of the flashboard body (5), and the positioning sleeve (4) is fixedly connected with the flashboard body (5); the lower end of the spring seat (3) is placed into the gate plate body (5) from the upper port, the lower end of the spring seat (3) is abutted against the upper end of the positioning sleeve (4), and the spring seat (3) is fixedly connected with the gate plate body (5);
the lower end of the spring (2) is propped against the second surface (16) of the spring seat (3);
the lower end of the valve rod (1) penetrates through an upper end hole of the spring (2), an upper end hole of the spring seat (3) and an upper end hole of the positioning sleeve (4), the lower end of the valve rod (1) is placed in a T-shaped groove in the upper portion of the pilot flashboard (7), and the upper end of the spring (2) abuts against a first surface (15) of the valve rod (1);
the second flashboard ring (9) is arranged in the first groove (13) of the first movable flashboard (6);
the right end of the first movable flashboard (6) is arranged from the left port of the flashboard body (5);
the first flashboard ring (8) is arranged in a second groove (14) of the second movable flashboard (12);
the left end of the second movable flashboard (12) is arranged from the right port of the flashboard body (5);
the lower part of the valve rod (1), the lower part of the positioning sleeve (4), the lower part of the gate body (5), the first movable gate plate (6) and the second movable gate plate (12) are arranged between a valve front valve seat (10) and a valve rear valve seat (11);
the left end surface of the first movable flashboard (6) props against the right end surface of the valve front valve seat (10); the right end face of the second movable flashboard (12) is propped against the left end face of the valve rear valve seat (11);
the left end surface of the pilot flashboard (7) props against the right end surface of the first movable flashboard (6); the right end surface of the pilot flashboard (7) props against the left end surface of the second movable flashboard (12);
the gate body (5), the first gate ring (8), the second gate ring (9), the first movable gate (6), the second movable gate (12) and the positioning sleeve (4) are enclosed to form a gate body cavity, and the pilot gate (7) is positioned in the gate body cavity; and a hole for communicating the cavity of the flashboard with the outside of the cavity is formed in the second movable flashboard (12), and the pilot flashboard (7) can open or block the hole in the second movable flashboard (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010208.5A CN106763848B (en) | 2017-01-06 | 2017-01-06 | Double-wedge-face movable gate plate set driven by machinery and internal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010208.5A CN106763848B (en) | 2017-01-06 | 2017-01-06 | Double-wedge-face movable gate plate set driven by machinery and internal pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763848A CN106763848A (en) | 2017-05-31 |
| CN106763848B true CN106763848B (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710010208.5A Active CN106763848B (en) | 2017-01-06 | 2017-01-06 | Double-wedge-face movable gate plate set driven by machinery and internal pressure |
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| CN (1) | CN106763848B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357388B (en) * | 2021-06-24 | 2022-06-21 | 浙江冠正阀门股份有限公司 | Parallel double-supporting-plate gate valve |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2533349Y (en) * | 2002-04-04 | 2003-01-29 | 钊洪智 | Expansion gate valve |
| US20090184279A1 (en) * | 2008-01-23 | 2009-07-23 | Buckhorn Rubber Products, Inc. | Wedge and covered insert assembly |
| CN201526691U (en) * | 2009-06-23 | 2010-07-14 | 汪玉奎 | Self-relief gate valve |
| CN103185148B (en) * | 2013-03-28 | 2015-08-26 | 北京欧特控制阀有限公司 | A kind of gate valve |
| CN104896129A (en) * | 2015-05-15 | 2015-09-09 | 营口埃斯威特阀门有限公司 | Parallel type double-gate gate valve |
| CN206503953U (en) * | 2017-01-06 | 2017-09-19 | 鞍山电磁阀有限责任公司 | A kind of movable flashboard group in folding wedge face driven using machinery and internal pressure |
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2017
- 2017-01-06 CN CN201710010208.5A patent/CN106763848B/en active Active
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| CN106763848A (en) | 2017-05-31 |
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| CB03 | Change of inventor or designer information |
Inventor after: Feng Zhonghai Inventor after: Zhang Yang Inventor after: E Wei Inventor after: Liu Xiangmeng Inventor after: Wu Tie Inventor after: Chen Xingzhou Inventor after: Jia Yunxia Inventor after: Zhou Tianli Inventor before: Feng Zhonghai Inventor before: Zhang Yang Inventor before: E Wei Inventor before: Liu Xiangmeng Inventor before: Wu Tie Inventor before: Chen Xingzhou Inventor before: Jia Yunxia Inventor before: Zhou Tianli |
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