CN201487303U - Safe explosion protection diaphragm valve - Google Patents
Safe explosion protection diaphragm valve Download PDFInfo
- Publication number
- CN201487303U CN201487303U CN2009201437782U CN200920143778U CN201487303U CN 201487303 U CN201487303 U CN 201487303U CN 2009201437782 U CN2009201437782 U CN 2009201437782U CN 200920143778 U CN200920143778 U CN 200920143778U CN 201487303 U CN201487303 U CN 201487303U
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- Prior art keywords
- valve
- valve body
- cylindrical shell
- cylinder
- wall
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- Expired - Fee Related
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Abstract
The utility model discloses a safe explosion protection diaphragm valve used in special operating conditions, which comprises a valve body. An opening is formed on the side wall of the valve body, a valve cap fixedly arranged on the side wall of the valve body is positioned above the opening, a hand wheel with internal threads is rotatably mounted at the top end of the valve cap, a valve stem with external threads is matched with the internal threads of the hand wheel, a valve spool extending into the valve body is connected with the lower end of the valve stem, an opening is formed on the side wall on the feed side of the valve body, a cylinder is matched with the inner wall of the opening, a vertical air inlet is formed at the lower end of the cylinder and is communicated with the inner cavity of the valve body, a step section is arranged on the inner wall of the cylinder above the air inlet of the cylinder, a conical body is supported on the upper inner edge of the step section, a pressure relief port is formed on the side wall of the cylinder above the step section, a spring is connected with the upper end of the conical body, a compression block in sliding fit with the inner wall of the cylinder is connected with the upper end of the spring, a clamping cap is connected with the outer side wall threads of the cylinder, and the spring abuts the compression block against the lower end surface of the clamping cap. When the liquid or gas in the valve exceeds the maximum set pressure, the pressure relief port is communicated with the inner cavity of the valve body, so as to effectively prevent the occurrence of pipeline explosion due to the pressure rise.
Description
Technical field
The utility model specifically is a kind of special operation condition safety anti-explosive membrane valve.
Background technique
Along with fast development of national economy, the people's culture and living standard have all obtained huge raising, and people also more and more pay attention to safety consciousness simultaneously.Medium transport pipeline in the industries such as the liquefaction separation of petroleum products, petroleum gas, rock gas and liquid oxygen and chemical industry generating, coal gas conveying, accumulate in the gasification of the endoceliac liquid of valve and when producing high pressure when running into, perhaps line clogging and raise suddenly owing to misoperation causes liquid, gas pressure in the conveyance conduit that valve closing causes has brought huge hidden danger for conveyance conduit safety.
Summary of the invention
The purpose of this utility model provides a kind of special operation condition safety anti-explosive membrane valve, when the liquid in the valve, when gas has surpassed maximum set pressure, pressure relief opening and body cavity conducting have effectively prevented owing to the raise accident of the pipe explosion cause of pressure takes place.
The technical solution of the utility model is as follows:
A kind of special operation condition safety anti-explosive membrane valve, comprise valve body, on the sidewall of valve body perforate is arranged, the top that is positioned at perforate is covered with the valve gap that is fixedly installed on the body wall, the top of valve gap is rotatablely equipped with the handwheel that has internal thread, the screw-internal thread fit of handwheel has and has externally threaded valve rod, the lower end of valve rod is connecting the spool that extend into valve inner, the feed side of spool is installed with flexible partition, the other end of flexible partition fixing with valve body on, on the sidewall of described valve body feed side perforate is arranged, be combined with cylindrical shell on the inwall of perforate, the cylindrical shell lower end has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, and the last inside edge jacking of step section has cone, has pressure relief opening on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, and the outer side wall scyewed joint has friction top on the cylindrical shell, and spring holds out against compact heap on the lower end surface of friction top.
Described friction top below with cylindrical shell outer side wall scyewed joint has leaned locking nut.
There is the section of stretching out described cylindrical shell lower end, and the perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, and has vertical suction port in the section of stretching out and communicates with valve inner, is separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body.
Liquid in the utility model valve body, when gas has surpassed maximum set pressure, pressure relief opening and body cavity conducting are discharged pressure relief opening with the liquid in the body cavity, gas, have effectively prevented because the accident generation of the pipe explosion that the pressure rising causes.
Pressure maximum size during the utility model pressure release can be set by screwing friction top.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model inner barrel part mounting structure schematic representation.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of special operation condition safety anti-explosive membrane valve, comprise valve body 1, on the sidewall of valve body 1 perforate is arranged, the top that is positioned at perforate is covered with the valve gap 2 that is fixedly installed on the body wall, the top of valve gap 2 is rotatablely equipped with the handwheel 3 that has internal thread, the screw-internal thread fit of handwheel has and has externally threaded valve rod 4, the lower end of valve rod is connecting the spool 5 that extend into valve inner, the feed side of spool 5 is installed with flexible partition 6, the other end of flexible partition fixing with valve body on, on the sidewall of valve body feed side perforate is arranged, be combined with cylindrical shell 7 on the inwall of perforate, cylindrical shell 7 lower ends are the section of stretching out, perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, having vertical suction port 8 in the section of stretching out communicates with valve inner, be separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body, the cylindrical shell upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, the last inside edge jacking of step section has cone 9, have pressure relief opening 10 on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring 11, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, the outer side wall scyewed joint has friction top 12 on the cylindrical shell, spring 11 holds out against compact heap on the lower end surface of friction top, has leaned locking nut 13 with the friction top of cylindrical shell outer side wall scyewed joint below.
Claims (3)
1. special operation condition safety anti-explosive membrane valve, comprise valve body, on the sidewall of valve body perforate is arranged, the top that is positioned at perforate is covered with the valve gap that is fixedly installed on the body wall, the top of valve gap is rotatablely equipped with the handwheel that has internal thread, the screw-internal thread fit of handwheel has and has externally threaded valve rod, the lower end of valve rod is connecting the spool that extend into valve inner, the feed side of spool is installed with flexible partition, the other end of flexible partition is fixed on the valve body, it is characterized in that: on the sidewall of described valve body feed side perforate is arranged, be combined with cylindrical shell on the inwall of perforate, the cylindrical shell lower end has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of the suction port top of cylindrical shell has the step section, the last inside edge jacking of step section has cone, have pressure relief opening on the sidewall of the overhead cylinder of step section, the upper end of cone is connected with spring, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, the outer side wall scyewed joint has friction top on the cylindrical shell, and spring holds out against compact heap on the lower end surface of friction top.
2. a kind of special operation condition safety anti-explosive membrane valve according to claim 1 is characterized in that: described friction top below with cylindrical shell outer side wall scyewed joint has leaned locking nut.
3. a kind of special operation condition safety anti-explosive membrane valve according to claim 1, it is characterized in that: there is the section of stretching out described cylindrical shell lower end, perforate screw-thread fit on outside thread and the body wall is arranged on the sidewall of the section of stretching out, have vertical suction port in the section of stretching out and communicate, be separated with sealing gasket between the lower end surface of cylindrical shell and the outer side of valve body with valve inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201437782U CN201487303U (en) | 2009-04-09 | 2009-04-09 | Safe explosion protection diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201437782U CN201487303U (en) | 2009-04-09 | 2009-04-09 | Safe explosion protection diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201487303U true CN201487303U (en) | 2010-05-26 |
Family
ID=42426182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201437782U Expired - Fee Related CN201487303U (en) | 2009-04-09 | 2009-04-09 | Safe explosion protection diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201487303U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797870A (en) * | 2011-05-26 | 2012-11-28 | 南京金口机械制造有限公司 | Sanitary aseptic diaphragm valve |
| CN110017386A (en) * | 2019-03-28 | 2019-07-16 | 迦南科技集团有限公司 | Straight diaphragm valve |
-
2009
- 2009-04-09 CN CN2009201437782U patent/CN201487303U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797870A (en) * | 2011-05-26 | 2012-11-28 | 南京金口机械制造有限公司 | Sanitary aseptic diaphragm valve |
| CN110017386A (en) * | 2019-03-28 | 2019-07-16 | 迦南科技集团有限公司 | Straight diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20150409 |
|
| EXPY | Termination of patent right or utility model |