CN202674429U - Electric contact automatic control pressure reducing valve - Google Patents
Electric contact automatic control pressure reducing valve Download PDFInfo
- Publication number
- CN202674429U CN202674429U CN 201220360150 CN201220360150U CN202674429U CN 202674429 U CN202674429 U CN 202674429U CN 201220360150 CN201220360150 CN 201220360150 CN 201220360150 U CN201220360150 U CN 201220360150U CN 202674429 U CN202674429 U CN 202674429U
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- Prior art keywords
- valve
- pressure
- main valve
- electric contact
- main
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- 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
The utility model relates to an electric contact automatic control pressure reducing valve, which comprises a main valve and a pilot valve. The main valve adopts a diaphragm structure, and comprises a valve body, a valve seat, a valve clack and a valve cap. A diaphragm is sealed and pressed between the valve body and the valve cap. A control chamber is formed between the upper plane of the diaphragm and the valve cap, and is communicated with an inlet channel of the main valve. The pilot valve is arranged between an outlet channel of the main valve and the control chamber. Key points are that: a normally open electromagnetic valve is arranged between the pilot valve and the control chamber of the main valve; an electric contact pressure meter is arranged at an outlet of the pilot valve; and a normally open contact of the electric contact pressure meter is connected in series with a power circuit of the normally open electromagnetic valve. When the pilot valve fails, and the outlet pressure of the main valve exceeds safety pressure, the normally open electromagnetic valve is electrified and closed by a switching signal of the electric contact pressure meter, so that the main valve is closed, the pressure of the outlet channel is reduced, the outlet pressure of the main valve is stabilized, and pressure stabilization performance is reliable. The valve is applied to the control of water supply system over the outlet pressure.
Description
Technical field
The utility model relates to valve field, particularly about a kind of reduction valve.The utility model is applicable to water system control outlet pressure.
Background technique
Automatic control relief pressure valve generally comprises main valve and pilot valve, main valve adopts diaphragm type structure, by valve body, flap, valve seat, valve gap forms, between valve body and valve gap, seal fixedly diaphragm, flap upper-end surface fixing seal is installed in the diaphragm center, consist of the control room between diaphragm upper-end surface and the valve gap, between control room and the main valve inlet passage by pipeline communication, be communicated with by pilot valve between control room and the main valve outlet passage, controlled the aperture of pilot valve by the pressure of main valve outlet passage, thereby the pressure in control main valve control room reaches control main valve flap aperture, realizes the stable control to main valve outlet passage pressure.Its major defect is: when pilot valve lost efficacy, main valve outlet passage pressure can't ensure pressure stability and the safety of main valve outlet conduit system, the voltage stabilizing poor reliability with system out of control.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, can guarantee that also the main valve outlet pressure is stable, the reliable electric contact automatic control relief pressure valve of voltage regulation performance even provide a kind of pilot valve to lose efficacy.
The technical solution of the utility model comprises main valve and pilot valve, main valve adopts diaphragm type structure, comprise valve body, valve seat, flap, valve gap, diaphragm seal is fitted between valve body and the valve gap, consist of the control room between plane and the valve gap on the diaphragm, the control room is communicated with the main valve inlet passage, pilot valve is installed between main valve outlet passage and the control room, mainly be that a normally open solenoid valve is installed between pilot valve and main valve control room, a pressure gauge with electric contact is installed in the outlet of pilot valve, and the normally open contact of this pressure gauge with electric contact is serially connected in the power circuit of normally open solenoid valve.
The beneficial effects of the utility model are: be provided with normally open solenoid valve between the control room of pilot valve and main valve, this normally open solenoid valve is by the pressure gauge with electric contact control that is installed in the pilot valve outlet, when the pilot valve inefficacy causes the main valve outlet pressure to surpass safety pressure, the switching signal of pressure gauge with electric contact makes normally open solenoid valve get electric closing, main valve is closed, reduce outlet passage pressure, realize that the main valve outlet pressure is stable, voltage regulation performance is reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Electric contact automatic control relief pressure valve as shown in Figure 1, comprise main valve 1 and pilot valve 4, main valve 1 adopts diaphragm type structure, comprise valve body, valve seat, flap, valve gap, diaphragm seal is fitted between valve body and the valve gap, consist of the control room between plane and the valve gap on the diaphragm, the control room is communicated with main valve 1 inlet passage, pilot valve 4 is installed between main valve 1 outlet passage and the control room, one normally open solenoid valve 3 is installed between pilot valve 4 and main valve 1 control room, described normally open solenoid valve 3 is opening state when dead electricity, a pressure gauge with electric contact 6 is installed in the outlet of pilot valve 4, the normally open contact of this pressure gauge with electric contact 6 is serially connected in the power circuit of normally open solenoid valve 3, and when pilot valve 4 inefficacies caused main valve 1 outlet pressure to surpass safety pressure, the switching signal of pressure gauge with electric contact 6 made normally open solenoid valve 3 get electric closing, main valve 1 control room internal pressure raises, flap is closed, and reduces main valve 1 outlet passage pressure, realizes stablizing main valve 1 outlet pressure.Pilot valve 4 outlets are communicated with main valve 1 outlet passage by ball valve 2, and pressure gauge with electric contact 6 is connected with pilot valve 4 outlets by Protective valve 5.Be provided with filter 8, needle-valve 7 between main valve 1 inlet passage and the control room, setting pressure table 10 on the connecting tube 11 between filter 8 and the needle-valve 7, setting pressure table control valve 9 between pressure gauge 10 and connecting tube 11.The aperture of pilot valve 4 is by the control of main valve 1 outlet pressure, and its control principle belongs to known technology, is not described in detail at this.
Claims (1)
1. electric contact automatic control relief pressure valve, comprise main valve (1) and pilot valve (4), main valve (1) adopts diaphragm type structure, comprise valve body, valve seat, flap, valve gap, diaphragm seal is fitted between valve body and the valve gap, consist of the control room between plane and the valve gap on the diaphragm, the control room is communicated with main valve (1) inlet passage, pilot valve (4) is installed between main valve (1) outlet passage and the control room, it is characterized in that between pilot valve (4) and main valve (1) control room, installing a normally open solenoid valve (3), a pressure gauge with electric contact (6) is installed in the outlet of pilot valve (4), and the normally open contact of this pressure gauge with electric contact (6) is serially connected in the power circuit of normally open solenoid valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360150 CN202674429U (en) | 2012-07-23 | 2012-07-23 | Electric contact automatic control pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360150 CN202674429U (en) | 2012-07-23 | 2012-07-23 | Electric contact automatic control pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674429U true CN202674429U (en) | 2013-01-16 |
Family
ID=47495335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220360150 Expired - Fee Related CN202674429U (en) | 2012-07-23 | 2012-07-23 | Electric contact automatic control pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN106369214A (en) * | 2016-09-29 | 2017-02-01 | 黄建斌 | Pipeline fluid regulating valve and executive device |
-
2012
- 2012-07-23 CN CN 201220360150 patent/CN202674429U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674540A (en) * | 2013-12-30 | 2014-03-26 | 正丰阀门集团有限公司 | Life testing device of diaphragm of hydraulic control valve |
| CN106369214A (en) * | 2016-09-29 | 2017-02-01 | 黄建斌 | Pipeline fluid regulating valve and executive device |
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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 |