CN104819325A - Hydraulic control valve switched off at high pressure and switched on at low pressure - Google Patents
Hydraulic control valve switched off at high pressure and switched on at low pressure Download PDFInfo
- Publication number
- CN104819325A CN104819325A CN201410813354.8A CN201410813354A CN104819325A CN 104819325 A CN104819325 A CN 104819325A CN 201410813354 A CN201410813354 A CN 201410813354A CN 104819325 A CN104819325 A CN 104819325A
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- China
- Prior art keywords
- valve
- pressure
- diaphragm
- switched
- hydraulic control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a hydraulic control valve switched off at high pressure and switched on at low pressure. The main valve body is a Y-shaped hydraulic control valve body, comprising a water-inlet-end high-pressure switched-on pilot valve, a water-outlet-end fine regulation valve and a high-pressure switched-off pilot valve. The water-inlet-end high-pressure switched-on pilot valve comprises a straight valve body, wherein a diaphragm is arranged at the upper part of the valve body; a spring is arranged in an upper cavity of the diaphragm; a lower cavity of the diaphragm is communicated with a medium; and the diaphragm is connected to a sealing valve plate of the valve. The fine regulation valve is of a conical structure. The high-pressure switched-off pilot valve comprises a straight valve body, wherein a diaphragm is arranged at the upper part of the valve body; a spring is arranged in an upper cavity of the diaphragm; a lower cavity of the diaphragm is communicated with a medium; and the diaphragm is connected to a sealing valve plate of the valve. When the working condition pressure is higher than the designed pressure, the valve is automatically switched off under the hydraulic action; and when the working condition pressure is lower than the designed pressure, the valve is automatically switched on, thereby effectively preventing the equipment behind the valve from exceeding the pressure. The main valve is capable of automatically restoring water supply when the pressure fluctuation is normal, thereby ensuring that the equipment is cooled. The hydraulic control valve is safe and reliable, and is excellent in practical function, and capable of ensuring the continuous operation of the industrial production.
Description
Technical field
The invention belongs to Waterpower Self-control Valve technical field, relate to and a kind of automatically to close under hydraulic action higher than valve during design pressure, when the hydraulic control valve of a kind of high pressure closedown low-pressure opening that working condition pressure is opened automatically lower than valve during design pressure when working condition pressure.
Technical background
Hydraulic control valve is one of valve very common in people's daily life, closely bound up with the life of people.Fluid-valve is widely used in the All aspects of such as building pipeline, industrial water supply, fire fighting device, Heating,Ventilating and Air Conditioning (HVAC) and irrigation system, and general conduct decompression, holds pressure, pressure release, adjust flux, the use of controlling water level and prevention water hammer etc.Hydraulic control valve does not also have high pressure automatically to close equipment after Protective valve at present, and pressure is automatically opened again after reducing and ensured medium Efficient Cycle, such as component cooling water system simultaneously.About other high pressure throttle downs, the self closing stop valve in such as combustion gas,
Combustible gas shutoff valve with automatic detection function, the controlling rod of combustible gas valve fixes gearwheel, and the small gear engaged with gearwheel is fixed on micro stepping motor axle, and micro stepping motor is electrically connected with control panel, and control panel is popped one's head in combustible gas and naked light and is electrically connected.Combustible gas, when leaking or because leaking the fire caused, can close combustible gas valve automatically.Such as another kind of liquid self-closing valve, comprise the mounting pipe be connected with emulsion container, the output tube being connected to mounting pipe outer end, the tube chamber of mounting pipe and the tube chamber conducting of output tube, what seal at the upper end portion opening of output tube is provided with an elastic button, the below of elastic button is connected with a spool, this spool can slide and laminating airtight with the inwall of output tube along the length direction of output tube, and the position that output tube is communicated with mounting pipe output terminal is between elastic button and spool.Such as pipeline gas self closing stop valve utilizes permanent magnet performance to realize.
Summary of the invention
The object of the invention is to the technical need for some manufacturing equipments, provide a kind of rational in infrastructure and high pressure of scientific in principle to close the hydraulic control valve of low-pressure opening from principle and structure.
To achieve these goals, the technological scheme that the present invention takes is:
A kind of high pressure closes the hydraulic control valve of low-pressure opening, it is characterized in that, main valve body is Y type hydraulic control valve valve body, comprises feed-water end high-pressure opening pilot valve, and waterexit end Mini-adjustable valve and high pressure close pilot valve, described feed-water end high-pressure opening pilot valve, comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate; Described Mini-adjustable valve is cone structure; Described high pressure closes pilot valve, and comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, and diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate.
Further, described Y type hydraulic control valve valve body comprises Y type runner.
Further, the spring force of described feed-water end high-pressure opening pilot valve and high pressure closedown pilot valve is adjustable.
Beneficial effect of the present invention is:
The invention provides a kind of new control technology; when working condition pressure is closed under hydraulic action automatically higher than valve during design pressure; when working condition pressure is opened automatically lower than valve during design pressure; equipment superpressure after available protecting valve; automatically can recover water flowing by main valve when pressure surge is normal again, ensure apparatus cools.Safe and reliable, there is outstanding utility function, ensure industrial continuous running.
Embodiment
A kind of high pressure closes the hydraulic control valve of low-pressure opening, it is characterized in that, main valve body is Y type hydraulic control valve valve body, comprises feed-water end high-pressure opening pilot valve, and waterexit end Mini-adjustable valve and high pressure close pilot valve, described feed-water end high-pressure opening pilot valve, comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate; Described Mini-adjustable valve is cone structure; Described high pressure closes pilot valve, and comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, and diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate.
Further, described Y type hydraulic control valve valve body comprises Y type runner.
Further, the spring force of described feed-water end high-pressure opening pilot valve and high pressure closedown pilot valve is adjustable.
The high pressure that the present invention relates to closes the hydraulic control valve of low-pressure opening, when valve inlet pressure is higher than working condition pressure, the high-pressure opening pilot valve in epicoele pipeline is communicated with at influent side, pushed at high pressure diaphragm moves, drive on sealing plate and move, pilot valve is opened, press water enters Y type main valve epicoele, upper cavity pressure is sent to epicoele and the high pressure in water outlet connecting tube closes pilot valve, pushed at high pressure diaphragm moves, drive on sealing plate and move, formed with the sealing seat be located at above valve plate and seal, pilot valve cuts out, it is in parallel that Mini-adjustable valve and high pressure close pilot valve, the flow that high pressure closes pilot valve is far smaller than feed-water end flow, press water promotes Y type main valve chamber diaphragm and moves down, main valve plate moves down, formed with the sealing seat be located at below valve plate and seal, main valve is closed, when valve inlet pressure is lower than working condition pressure, be communicated with the high-pressure opening pilot valve in epicoele pipeline at influent side, spring promotes diaphragm and moves down, drive sealing plate moves down, and pilot valve cuts out, and press water stops entering Y type main valve epicoele, upper cavity pressure is discharged by Mini-adjustable valve, and epicoele and the high pressure in water outlet connecting tube close pilot valve, and spring promotes diaphragm and moves down, drive sealing plate moves down, pilot valve is opened, and the press water release of Y type main valve upper chamber, diaphragm moves, main valve plate moves, and main valve is opened.
Claims (3)
1. the hydraulic control valve of a high pressure closedown low-pressure opening, it is characterized in that, main valve body is Y type hydraulic control valve valve body, comprises feed-water end high-pressure opening pilot valve, and waterexit end Mini-adjustable valve and high pressure close pilot valve, described feed-water end high-pressure opening pilot valve, comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate; Described Mini-adjustable valve is cone structure; Described high pressure closes pilot valve, and comprise straight-through valve body, valve body top is provided with diaphragm, and diaphragm epicoele establishes spring, and diaphragm cavity of resorption communicates with medium, diaphragm connection valve door sealing valve plate.
2. a kind of high pressure closes the hydraulic control valve of low-pressure opening according to claim 1, and it is characterized in that, described Y type hydraulic control valve valve body comprises Y type runner.
3. a kind of high pressure closes the hydraulic control valve of low-pressure opening according to claim 1, it is characterized in that, the spring force that described feed-water end high-pressure opening pilot valve and high pressure close pilot valve is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410813354.8A CN104819325A (en) | 2014-12-24 | 2014-12-24 | Hydraulic control valve switched off at high pressure and switched on at low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410813354.8A CN104819325A (en) | 2014-12-24 | 2014-12-24 | Hydraulic control valve switched off at high pressure and switched on at low pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104819325A true CN104819325A (en) | 2015-08-05 |
Family
ID=53729723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410813354.8A Pending CN104819325A (en) | 2014-12-24 | 2014-12-24 | Hydraulic control valve switched off at high pressure and switched on at low pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116058265A (en) * | 2023-03-01 | 2023-05-05 | 西北农林科技大学 | Digital variable irrigation group control system and digital variable irrigator |
| CN116267540A (en) * | 2023-03-01 | 2023-06-23 | 西北农林科技大学 | Digital variable irrigation group control method |
-
2014
- 2014-12-24 CN CN201410813354.8A patent/CN104819325A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116058265A (en) * | 2023-03-01 | 2023-05-05 | 西北农林科技大学 | Digital variable irrigation group control system and digital variable irrigator |
| CN116267540A (en) * | 2023-03-01 | 2023-06-23 | 西北农林科技大学 | Digital variable irrigation group control method |
| CN116058265B (en) * | 2023-03-01 | 2024-03-22 | 西北农林科技大学 | Digital variable irrigation group control system and digital variable irrigator |
| CN116267540B (en) * | 2023-03-01 | 2024-04-26 | 西北农林科技大学 | Digital variable irrigation group control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150805 |