CN202674424U - Self-closing valve for pipe burst - Google Patents
Self-closing valve for pipe burst Download PDFInfo
- Publication number
- CN202674424U CN202674424U CN 201220360129 CN201220360129U CN202674424U CN 202674424 U CN202674424 U CN 202674424U CN 201220360129 CN201220360129 CN 201220360129 CN 201220360129 U CN201220360129 U CN 201220360129U CN 202674424 U CN202674424 U CN 202674424U
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- Prior art keywords
- valve
- main
- main valve
- inlet
- control
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- Expired - Fee Related
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Abstract
The utility model relates to a self-closing valve for pipe burst. The self-closing valve comprises a main valve and a pilot valve. The main valve has a diaphragm structure. A diaphragm of the main valve is sealed and pressed between a valve body and a valve cap. A control chamber is formed between the diaphragm and the valve cap. The pilot valve is arranged between an inlet channel of the main valve and the control chamber. Key points are that: the pilot valve adopts a pressure maintenance control valve; a control cavity of the pressure maintenance control valve is communicated with the inlet channel and an outlet channel of the main valve; and the control chamber of the main valve is communicated with a ball valve. In a normal working state, the ball valve is in a closed state, the pressure maintenance control valve is in a closed state under the joint control of pressure of the inlet channel and the outlet channel of the main valve. In case of burst of a branch pipe, the outlet pressure of the main valve is greatly lowered, the pilot valve is opened, and the inlet pressure of the main valve enters the control chamber to close the main valve to automatically cut off an accident pipeline, prevent the leakage of water in a main pipeline, maintain pressure in the main pipeline, ensure the normal water supply of upstream and reduce the waste of water resources. The self-closing valve has the advantages of narrow water supply cut-off range, high self controllability, high water supply reliability and the like, and is a control valve applied to an inlet of the branch pipe of a water supply pipe.
Description
Technical field
The utility model relates to valve field, particularly about a kind of hydraulic control valve.The utility model is applicable to the control valve of water system arm import.
Background technique
In water system when branch pipe(tube) generation explosion, water in the pipeline can leak in a large number, need to manually close main pipe master control valve and could cut off the leakage water source, causes great lot of water resources waste and large size water failure, affect large quantities of users' normal water, troublesome poeration, reliability of water supply are poor.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, provide a kind of and when propping up pipe explosion, can automatically cut off this arm import water source, preventing from being responsible for the water source leaks, keep the pressure in the supervisor, guarantee the normal water in upstream, reduce water resource waste, the scope of cutting off the water is little, autocontrol performance is good, the booster self acting stop valve that reliability of water supply is high.
The technical solution of the utility model comprises main valve and pilot valve, main valve adopts diaphragm type structure, its diaphragm seal is fitted between valve body and the valve gap, consist of the control room between diaphragm and the valve gap, pilot valve is installed between main valve inlet passage and the control room, mainly be that pressure control valve is held in the pilot valve employing, described control chamber and the main valve of holding pressure control valve imported and exported channel connection, the main valve control room is communicated with a ball valve, in normal operation, ball valve place closed condition is held pressure control valve and locate closed condition under the co-controlling of main valve inlet passage and outlet passage pressure.
In above technological scheme, hold between the control chamber of pressure control valve and main valve inlet passage and the outlet passage and be respectively equipped with inlet filter and egress filtering device.
In above technological scheme, between inlet filter and main valve inlet passage, be provided with inlet ball valve, be provided with vent ball valve between egress filtering device and the main valve outlet passage, described inlet ball valve and vent ball valve are opening state in normal operation.
The beneficial effects of the utility model are: when propping up pipe explosion, main valve outlet passage pressure significantly descends, and pilot valve is opened, and main valve inlet passage pressure enters the control room closes main valve, automatic cut-out accident pipeline, prevent that water leaks in the main pipe, keep the pressure in the main pipe, guarantee the upstream normal water supply, reduce water resource waste, the scope of cutting off the water is little, and autocontrol performance is good, has improved the system water supply reliability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Booster self acting stop valve as shown in Figure 1, comprise main valve 1 and pilot valve 3, main valve 1 adopts diaphragm type structure, its diaphragm seal is fitted between valve body and the valve gap, consist of control room 9 between diaphragm and the valve gap, pilot valve 3 is installed between main valve 1 inlet passage and the control room 9, pilot valve 3 adopts holds pressure control valve, described control chamber and the main valve 1 of holding pressure control valve imported and exported channel connection, the control room 9 of main valve 1 is communicated with a ball valve 7, in normal operation, ball valve 7 place's closed conditions are held pressure control valve and locate closed condition under the co-controllings of main valve 1 inlet passage and outlet passage pressure.Will regulate pilot valve 3 first before main valve 1 drops into normal operation, its adjustment process is: ball valve 7 is closed, and the adjusting screw of pilot valve 3 is totally released, and the water of main valve 1 inlet passage enters the control room 9 of main valve 1 by pilot valve 3, main valve 1 is closed; Then open ball valve 7, the water in main valve 1 control room 9 is flowed out, open main valve 1; When ball valve 7 water outlets are constant, regulate the adjusting screw of pilot valve 3 until ball valve 7 stops water outlet, then close ball valve 7, main valve 1 enters working state.
The diaphragm intermediate seal of main valve 1 is fixedly connected with flap, and the lower end surface of this flap is shaped with the sealing surface that the valve seat with main valve 1 cooperatively interacts, and guide rod is installed at the flap center, is provided with spring between diaphragm upper-end surface and the valve gap.
Hold between the control chamber of pressure control valve and main valve 1 inlet passage and the outlet passage and be respectively equipped with inlet filter 5 and egress filtering device 6.Be provided with inlet ball valve 4 between inlet filter 5 and main valve 1 inlet passage, be provided with vent ball valve 8 between egress filtering device and main valve 1 outlet passage, described inlet ball valve 4 and vent ball valve 8 are opening state in normal operation.Inlet ball valve 4, vent ball valve 8, inlet filter 5, egress filtering device 6, pilot valve 3 are connected with main valve 1 by conduit 2.
Claims (3)
1. booster self acting stop valve, comprise main valve (1) and pilot valve (3), main valve (1) adopts diaphragm type structure, its diaphragm seal is fitted between valve body and the valve gap, consist of control room (9) between diaphragm and the valve gap, pilot valve (3) is installed between main valve (1) inlet passage and control room (9), it is characterized in that pilot valve (3) adopts holds pressure control valve, described control chamber and the main valve (1) of holding pressure control valve imported and exported channel connection, main valve (1) control room (9) is communicated with a ball valve (7), in normal operation, ball valve (7) is located closed condition, holds pressure control valve and locate closed condition under the co-controlling of main valve (1) inlet passage and outlet passage pressure.
2. booster self acting stop valve according to claim 1 is characterized in that holding between the control chamber of pressure control valve and main valve (1) inlet passage and the outlet passage and is respectively equipped with inlet filter (5) and egress filtering device (6).
3. booster self acting stop valve according to claim 1 and 2, it is characterized in that between inlet filter (5) and main valve (1) inlet passage, being provided with inlet ball valve (4), be provided with vent ball valve (8) between egress filtering device (6) and main valve (1) outlet passage, described inlet ball valve (4) and vent ball valve (8) are opening state in normal operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360129 CN202674424U (en) | 2012-07-23 | 2012-07-23 | Self-closing valve for pipe burst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360129 CN202674424U (en) | 2012-07-23 | 2012-07-23 | Self-closing valve for pipe burst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674424U true CN202674424U (en) | 2013-01-16 |
Family
ID=47495330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220360129 Expired - Fee Related CN202674424U (en) | 2012-07-23 | 2012-07-23 | Self-closing valve for pipe burst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674424U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353001A (en) * | 2013-07-18 | 2013-10-16 | 中国长江三峡集团公司 | Pipe bursting shutoff valve |
| CN106090364A (en) * | 2016-08-26 | 2016-11-09 | 上海康措流体控制有限公司 | Electro hydraulic valve, outlet pressure control system and inlet pressure control system |
| CN108331948A (en) * | 2018-01-23 | 2018-07-27 | 中国长江电力股份有限公司 | Pilot-operated type booster shutoff valve and control method |
-
2012
- 2012-07-23 CN CN 201220360129 patent/CN202674424U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353001A (en) * | 2013-07-18 | 2013-10-16 | 中国长江三峡集团公司 | Pipe bursting shutoff valve |
| CN103353001B (en) * | 2013-07-18 | 2016-08-10 | 中国长江三峡集团公司 | Booster shutoff valve |
| CN106090364A (en) * | 2016-08-26 | 2016-11-09 | 上海康措流体控制有限公司 | Electro hydraulic valve, outlet pressure control system and inlet pressure control system |
| CN106090364B (en) * | 2016-08-26 | 2021-08-10 | 上海康措流体控制有限公司 | Electro-hydraulic valve, outlet pressure control system and inlet pressure control system |
| CN108331948A (en) * | 2018-01-23 | 2018-07-27 | 中国长江电力股份有限公司 | Pilot-operated type booster shutoff valve and control method |
| CN108331948B (en) * | 2018-01-23 | 2023-05-16 | 中国长江电力股份有限公司 | Pilot-operated type pipe explosion shutoff valve and control method |
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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: 20130116 Termination date: 20160723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |