CN201391645Y - Safe explosion-proof butterfly valve - Google Patents

Safe explosion-proof butterfly valve Download PDF

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Publication number
CN201391645Y
CN201391645Y CN200920143777U CN200920143777U CN201391645Y CN 201391645 Y CN201391645 Y CN 201391645Y CN 200920143777 U CN200920143777 U CN 200920143777U CN 200920143777 U CN200920143777 U CN 200920143777U CN 201391645 Y CN201391645 Y CN 201391645Y
Authority
CN
China
Prior art keywords
valve body
cylindrical shell
cylinder body
wall
valve
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
Application number
CN200920143777U
Other languages
Chinese (zh)
Inventor
王成华
徐杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI TIANMA PUMP VALVE GROUP Co Ltd
Original Assignee
ANHUI TIANMA PUMP VALVE GROUP Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANHUI TIANMA PUMP VALVE GROUP Co Ltd filed Critical ANHUI TIANMA PUMP VALVE GROUP Co Ltd
Priority to CN200920143777U priority Critical patent/CN201391645Y/en
Application granted granted Critical
Publication of CN201391645Y publication Critical patent/CN201391645Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a safe explosion-proof butterfly valve for use under special working conditions, which comprises a valve body, wherein, a dish plate provided with a rotating shaft is arranged in the valve body, the rotating shaft penetrates through the side wall of the valve body and is driven by a worm wheel and worm device fixed on the side wall of the valve body, an opening is formed on the side wall of the feeding side of the valve body, a cylinder body is engaged with the inner wall of the opening, the lower end of the cylinder body is sealed, a vertical air inlet is formed at the lower end of the cylinder body and is communicated with the inner chamber of the valve body, the upper end of the cylinder body is opened, a step section is formed on the inner wall of the cylinder body above the air inlet of the cylinder body, a cone is supported on the upper inner edge of the step section, a pressure relief port is formed on the side wall of the cylinder body above the step section, a spring is connected to the upper end of the cone, a compress block which is in slide fit with the inner wall of the cylinder body is connected to the upper end of the spring, a compress lid is in threaded connection with the outer side wall of the upper part of the cylinder body, and the compress block is propped by the spring against the lower end surface of the compress lid. When liquids and gases in the valve are in excess of the maximum set pressure, the pressure relief port is enabled to be communicated with the inner chamber of the valve body, thereby effectively preventing pipeline explosion caused by rising pressure.

Description

Safety anti-explosive dish valve
Technical field
The utility model specifically is a kind of special operation condition safety anti-explosive dish 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 dish 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 dish valve, comprise valve body, be provided with the dish plate that has rotating shaft in the valve body, body wall is passed in described rotating shaft, by being fixed in the worm and gear device transmission on the body wall, 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 seals and has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of cylindrical shell suction port top 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, and the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, cylindrical shell upper outside wall scyewed joint has friction top, 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 sidewall of the section of stretching out has the perforate screw-thread fit on outside thread and the body wall, has vertical suction port in the section of stretching out and communicates with body cavity, 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 dish valve, comprise valve body 1, be provided with the dish plate 2 that has rotating shaft 3 in the valve body 1, body wall is passed in rotating shaft 3, by being fixed in worm and gear device 4 transmissions on the body wall, on the sidewall of valve body feed side perforate is arranged, be combined with cylindrical shell 5 on the inwall of perforate, cylindrical shell 5 lower ends are the section of stretching out, the sidewall of the section of stretching out has the perforate screw-thread fit on outside thread and the body wall, having vertical suction port 6 in the section of stretching out communicates with body cavity, 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 cylindrical shell suction port top has the step section, the last inside edge jacking of step section has cone 7, have pressure relief opening 8 on the sidewall of the overhead cylinder of step section, the upper end of cone 7 is connected with spring 9, the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, cylindrical shell upper outside wall scyewed joint has friction top 10, spring 9 holds out against compact heap on the lower end surface of friction top 10, has leaned locking nut 11 with the friction top of cylindrical shell outer side wall scyewed joint below.

Claims (3)

1, a kind of special operation condition safety anti-explosive dish valve, comprise valve body, be provided with the dish plate that has rotating shaft in the valve body, body wall is passed in described rotating shaft, by being fixed in the worm and gear device transmission on the body wall, 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 seals and has vertical suction port and communicates with body cavity, the cylindrical shell upper end is opened wide, the cylinder inboard wall of cylindrical shell suction port top 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, and the upper end of spring is connected with the compact heap that is slidingly matched with cylinder inboard wall, cylindrical shell upper outside wall scyewed joint has friction top, and spring holds out against compact heap on the lower end surface of friction top.
2, a kind of special operation condition according to claim 1 safety anti-explosive dish valve 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 according to claim 1 safety anti-explosive dish valve, it is characterized in that: there is the section of stretching out described cylindrical shell lower end, the sidewall of the section of stretching out has the perforate screw-thread fit on outside thread and the body wall, 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 body cavity.
CN200920143777U 2009-04-09 2009-04-09 Safe explosion-proof butterfly valve Expired - Fee Related CN201391645Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920143777U CN201391645Y (en) 2009-04-09 2009-04-09 Safe explosion-proof butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920143777U CN201391645Y (en) 2009-04-09 2009-04-09 Safe explosion-proof butterfly valve

Publications (1)

Publication Number Publication Date
CN201391645Y true CN201391645Y (en) 2010-01-27

Family

ID=41598470

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920143777U Expired - Fee Related CN201391645Y (en) 2009-04-09 2009-04-09 Safe explosion-proof butterfly valve

Country Status (1)

Country Link
CN (1) CN201391645Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287539A (en) * 2011-07-24 2011-12-21 李厚志 Actively-sealed butterfly valve
CN110145693A (en) * 2019-06-29 2019-08-20 三门星凯智能科技有限公司 A kind of automatism isolation pipeline preventing gas explosion
CN115306787A (en) * 2022-10-10 2022-11-08 烟台中宇航空液压有限公司 Oil leakage prevention device for electro-hydraulic servo valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287539A (en) * 2011-07-24 2011-12-21 李厚志 Actively-sealed butterfly valve
CN110145693A (en) * 2019-06-29 2019-08-20 三门星凯智能科技有限公司 A kind of automatism isolation pipeline preventing gas explosion
CN110145693B (en) * 2019-06-29 2020-10-30 尚丹 Automatic isolation pipeline for preventing natural gas explosion
CN115306787A (en) * 2022-10-10 2022-11-08 烟台中宇航空液压有限公司 Oil leakage prevention device for electro-hydraulic servo 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: 20100127

Termination date: 20150409

EXPY Termination of patent right or utility model