CN208457239U - A kind of anti-device that builds the pressure of gate valve valve chamber - Google Patents
A kind of anti-device that builds the pressure of gate valve valve chamber Download PDFInfo
- Publication number
- CN208457239U CN208457239U CN201820671198.XU CN201820671198U CN208457239U CN 208457239 U CN208457239 U CN 208457239U CN 201820671198 U CN201820671198 U CN 201820671198U CN 208457239 U CN208457239 U CN 208457239U
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- CN
- China
- Prior art keywords
- valve
- pressure
- valve chamber
- chamber
- builds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of anti-device that builds the pressure of gate valve valve chamber, belongs to valve and machinery field, the valve with valve chamber when closing especially suitable for large-scale gate valve etc..Belong to enclosure space in valve chamber when especially large-scale gate valve of gate valve etc. is closed, when valve after a period of use, due to hydraulically full in valve chamber, when valve working environment temperature increases, fluid temperature in valve chamber increases and volume expansion, pressure rise causes valve stem seal leakage or the big lid flange seal leakage of valve.A kind of anti-device that builds the pressure of gate valve valve chamber, it is characterized in that, the packaging type using spring (11) effect one-way conduction with pinnacle filtering shroud (8) is anti-to build the pressure device (5), it is mounted in gate valve valve chamber (4), it is connect with valve inlet and outlet (6), the unidirectional aerial drainage of valve chamber (4) interior expanding liquid to valve is imported and exported into (6).
Description
Technical field
The invention belongs to valve and machinery field, the valve with valve chamber when being closed especially suitable for large-scale gate valve etc..
Background technique
The valve with valve chamber belongs to closing in valve chamber when valve flashboard (7) is in close state when gate valve etc. is closed
Space, when valve after a period of use, due to hydraulically full in valve chamber, when valve working environment temperature increases, in valve chamber
Fluid temperature increase and volume expansion, gradually risen in the fluid pressure of closed valve intraluminal inflation, when valve cavity pressure liter
It is high to will cause valve damage to when being more than valve maximum test pressure, cause valve stem packing sealing (2) leakage or the big lid method of valve
Orchid sealing (3) leakage.Packing seal or flange gasket are needed to change when maintenance, increases maintenance cost, are influenced production and are normally carried out.Dimension
Valve after repairing leaks scene after a period of use still will appear.
Summary of the invention
To solve the problems, such as that gate valve valve chamber builds the pressure, the present invention installs that a kind of gate valve valve chamber is anti-to build the pressure device (5) in gate valve valve chamber,
When valve chamber pressure rise, the anti-device that builds the pressure will be in the pressure releasing in valve chamber to valve inlet and outlet pipeline (6).
In the valve chamber of gate valve (4), prevent building the pressure device (5) with valve inlet and outlet link position aperture installation, which adopts
With non-return valve operational principle, pressure value of releasing is by adjusting spring setting.The device is installed using standard thread, using packaging type
Structure is mainly made of valve body (12), spool (10), spring (11), bonnet (9), filtering screen (8).It is miscellaneous in valve chamber to prevent
Matter blocking, the device filtering screen are peaky shape.
Innovative point of the invention
The anti-facility that builds the pressure of general valve valve chamber is all disposed within outside valve body, to valve body outside pressure release, need to be increased waste liquid and be returned
Receive facility.The anti-device that builds the pressure of this gate valve is mounted in valve chamber, and the valve chamber pressure of superelevation is into the inlet/outlet pipeline being connected with valve
It releases, rather than to pressure release outside valve body, without increasing devil liquor recovery facility.
Pressure when the anti-device that builds the pressure of gate valve can be such that valve closes in valve chamber is within the scope of valve rated pressure.Gate valve is anti-
The device that builds the pressure uses check valve principle, and when the valve is open, valve cavity pressure is identical as pipeline pressure, when the valve is closed, pipe
Pressure can not flow to valve chamber by the device in road, and when valve cavity pressure, which is higher than, prevents building the pressure device setting value, which is opened,
Liquid flows in valve inlet and outlet pipeline in valve chamber.
Detailed description of the invention
Fig. 1 is the anti-device installation diagram that builds the pressure of gate valve valve chamber, is marked as follows: 1, electric device；2, valve stem seal；3, big lid method
Orchid sealing；4, valve chamber；5, prevent the device that builds the pressure；6, valve is imported and exported；7, flashboard.
Fig. 2 is the anti-apparatus structure schematic diagram that builds the pressure, and is marked as follows: 8, filtering screen；9, bonnet；10, spool；11, spring；
12, valve body.
Specific embodiment
In attached drawing 1, the aperture tapping of (6) communicating position, the anti-dress that builds the pressure of installation gate valve are imported and exported in gate valve valve chamber (4) and valve
(5) are set, which is connected using standard thread, and encapsulation process is used at connection screw thread.
In attached drawing 2, the anti-device that builds the pressure integrally uses stainless steel to make, and is packaging type structure.Spool (10) is matched with bonnet (9)
It closes position and uses high-strength steel Precision Machining, guarantee that contact surface sealing is tight, durable.Valve body (12) and bonnet (9) screw thread position are close
Envelope processing.Filtering screen (8) uses pinnacle mode, and filter hole is less than bonnet through-hole diameter, sundries is prevented to be deposited on filter cap (8)
It is internal to go up and enter valve body (12).
Claims (1)
1. a kind of anti-device that builds the pressure of gate valve valve chamber, it is characterized in that, being acted on using spring (11) with pinnacle filtering screen (8) is unidirectional
The packaging type of conducting is anti-to build the pressure device (5), is mounted in gate valve valve chamber (4), connect with valve inlet and outlet (6), will be in valve chamber (4)
The unidirectional aerial drainage of expanding liquid to valve imports and exports (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820671198.XU CN208457239U (en) | 2018-05-08 | 2018-05-08 | A kind of anti-device that builds the pressure of gate valve valve chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820671198.XU CN208457239U (en) | 2018-05-08 | 2018-05-08 | A kind of anti-device that builds the pressure of gate valve valve chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208457239U true CN208457239U (en) | 2019-02-01 |
Family
ID=65151873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820671198.XU Expired - Fee Related CN208457239U (en) | 2018-05-08 | 2018-05-08 | A kind of anti-device that builds the pressure of gate valve valve chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208457239U (en) |
-
2018
- 2018-05-08 CN CN201820671198.XU patent/CN208457239U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20210508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |