CN200979003Y - Self-operated adjustable differential pressure valve - Google Patents
Self-operated adjustable differential pressure valve Download PDFInfo
- Publication number
- CN200979003Y CN200979003Y CN 200620165788 CN200620165788U CN200979003Y CN 200979003 Y CN200979003 Y CN 200979003Y CN 200620165788 CN200620165788 CN 200620165788 CN 200620165788 U CN200620165788 U CN 200620165788U CN 200979003 Y CN200979003 Y CN 200979003Y
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- CN
- China
- Prior art keywords
- pressure
- valve
- pressure difference
- spool
- adjustable
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- Expired - Lifetime
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to a self-operated adjustable pressure difference valve, comprising a valve body, a valve cover, a spool, a spring cylinder, a spring, a film, a cross adjustable pressure valve, a pressure guide pipe or the like, wherein the film plate divides the pressure difference valve into two parts of upper and lower, respectively connected with two sides of high pressure and low pressure of the controlled pressure difference system, the film plate is connected with the upper portion of the spool, the spring is equipped under the spool, when the pressure difference of the controlled system deviates the set value, the upper and lower pressure difference on the film plate then pushes the film plate, thereby driving the spool opened large or the valve closed small and adjust the resistance, which makes the pressure difference of the controlled system constant, the cross adjustable pressure valve is used to adjust the water inlet pressure on the upper portion of an adjustable sensor pressure film to change the controlling pressure difference, and the cross adjustable pressure valve is equipped with standard pressure difference value, convenient to adjust the pressure difference. The utility model has simple structure, convenient adjustment, and high controlling precise and stable performance.
Description
Technical field
The utility model relates to the mechanical engineering valve, and being specifically related to a kind of pressure with liquid in the pipe network system self is power, when fluid pressure changes, makes by the invariable a kind of pressure-difference valve of pipeline pressure reduction.
Background technique
In the prior art, the adjusting of self-powering type pressure-difference valve partly adopts the pressure that changes spring to change the principle that it controls pressure reduction, this mode, and the control accuracy inaccuracy, regulation range is little, and less stable can't be demarcated pressure difference.
Summary of the invention
The purpose of this utility model, it is good to provide a kind of performance simple in structure, and the control accuracy height is provided with the adjustable pressure difference valve of self-powering type that pressure reduction is demarcated numerical value.
The purpose of this utility model is achieved through the following technical solutions.
The adjustable pressure difference valve of self-powering type, the main body inner chamber of modulating valve divides film forming upper chambers and film lower chamber two-part by the pressure-sensitive film.Pressure-difference valve main body inner chamber vertically is fitted with spool, and spool top connects diaphragm, and the spool bottom connects spring.Cover four-way pressure regulator valve and the PRESSURE PIPE that connection diaphragm upper chambers and lower chamber are housed at pressure-difference valve, be shaped on fixed orifice and tapering adjustable lever in the four-way pressure regulator valve, can demarcate pressure difference around the adjustable lever.
The utility model is being continued to use spring precompressed technology, on the basis of minimum control pressure reduction, utilize the mixed pressure technology that pressure-sensitive film pressure reduction ratio is up and down changed, realize the adjusting of control pressure reduction, thereby the control pressure reduction that reaches in a big way is adjustable, and can do pressure reduction and demarcate.
Because above new design has been adopted in the utility model design, makes it have innovation structure, regulation range is big, and is easy to use, is a kind of novel pressure reduction regulating and controlling valve.The utility model control accuracy height, stable performance.
Description of drawings
Accompanying drawing is the cross-sectional schematic of embodiment's concrete structure of the utility model.
Among the figure: 1, regulation valve body, 2, valve gap, 3, diaphragm, 4, spool, 5, spring, 6, spring strut, 7, the four-way pressure regulator valve, 8, peripheral PRESSURE PIPE, 9, fixed orifice, 10, the tapering adjustable lever.P1: intake pressure, P2: spool forefront pressure, P3: end pressure behind the spool, Pt: spring thrust.
Embodiment
With reference to accompanying drawing, the adjustable pressure difference valve of self-powering type comprises valve body 1, valve gap 2, spring strut 6, spring 5, spool 4, pressure-sensitive diaphragm 3, four-way pressure regulator valve 7, PRESSURE PIPE 8, fixed orifice 9 and tapering adjustable lever 10.Four-way pressure regulator valve 7 is housed on the valve gap 2, and the top of four-way pressure regulator valve 7 is connected with outside water pipe, and the lower end of four-way pressure regulator valve 7 is communicated with the top of pressure-sensitive diaphragm 3 through valve gap 2.One side of fixed orifice 9 is communicated with the feed-water end of valve body 1 by PRESSURE PIPE 8.Valve body 1 inner chamber is by 3 fens film forming upper chambers of pressure-sensitive diaphragm and film lower chamber two-part, and inner chamber vertically is equipped with spool 4, and spool 4 tops connect pressure-sensitive diaphragm 3, and spool 4 bottoms connect spring 5.Be shaped on fixed orifice 9 and tapering adjustable lever 10 in the four-way pressure regulator valve 7, can demarcate pressure difference around the tapering adjustable lever 10.The water inlet diameter on four-way pressure regulator valve 7 tops is 0.5-2mm, and fixed orifice 9 diameters of side are 4-6mm, and the tapered angle of having demarcated tapering adjustable lever 10 front ends of pressure reduction numerical value is 30 °.
If the thrust Pt=(P1-P2) of spring is pressure balance on the film then, then spool is motionless, and the aperture of valve is constant, moves down if the pressure P 1-P2 of liquid will drive spool greater than the thrust diaphragm of spring, closes small valve core and makes the P2 increase, thereby make till the Pt=P1-P2.If the pressure P 1-P2 of liquid less than the thrust of spring, so owing to the effect spool of spring will be opened greatly, thereby reduces P2, till pressure balance Pt=P1-P2 on the diaphragm.The pressure that the handy four-way pressure regulator valve of setting pressure reduction changes import P1 changes setting pressure reduction.Its pressure difference is demarcated on test stand, so that regulate.
Claims (4)
1, the adjustable pressure difference valve of a kind of self-powering type comprises: valve body (1), valve gap (2), spring strut (6), spring (5), spool (4), pressure-sensitive diaphragm (3), four-way pressure regulator valve (7), PRESSURE PIPE (8), fixed orifice (9) and tapering adjustable lever (10); It is characterized in that: four-way pressure regulator valve (7) is housed on the valve gap (2), the top of four-way pressure regulator valve (7) is connected with outside water pipe, the lower end of four-way pressure regulator valve (7) is through top being communicated with of valve gap (2) with pressure-sensitive diaphragm (3), and a side of fixed orifice (9) is communicated with the feed-water end of valve body (1) by PRESSURE PIPE (8); Valve body (1) inner chamber divides film forming upper chambers and film lower chamber two-part by pressure-sensitive diaphragm (3), and inner chamber vertically is equipped with spool (4), and spool (4) top connects pressure-sensitive diaphragm (3), and spool (4) bottom connects spring (5).
2, the adjustable pressure difference valve of a kind of self-powering type according to claim 1 is characterized in that: be shaped on fixed orifice (9) and tapering adjustable lever (10) in the described four-way pressure regulator valve (7), can demarcate pressure difference around the tapering adjustable lever (10).
3, the adjustable pressure difference valve of a kind of self-powering type according to claim 1, it is characterized in that: the water inlet diameter on described four-way pressure regulator valve (7) top is 0.5-2mm, the fixed orifice of side (9) diameter is 4-6mm, has demarcated the tapering adjustable lever (10) of pressure reduction numerical value
4, the adjustable pressure difference valve of a kind of self-powering type according to claim 1 is characterized in that: the tapered angle of described tapering adjustable lever (10) front end is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165788 CN200979003Y (en) | 2006-12-13 | 2006-12-13 | Self-operated adjustable differential pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620165788 CN200979003Y (en) | 2006-12-13 | 2006-12-13 | Self-operated adjustable differential pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200979003Y true CN200979003Y (en) | 2007-11-21 |
Family
ID=38979380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620165788 Expired - Lifetime CN200979003Y (en) | 2006-12-13 | 2006-12-13 | Self-operated adjustable differential pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200979003Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048085A (en) * | 2013-12-27 | 2014-09-17 | 李潘宝 | Pilot-operated type pressure regulation valve |
| CN104121398A (en) * | 2014-07-14 | 2014-10-29 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| CN104565488A (en) * | 2015-01-26 | 2015-04-29 | 马景岗 | Steel-made welding pressure difference control valve |
| CN104864144A (en) * | 2015-05-07 | 2015-08-26 | 江苏神通阀门股份有限公司 | Self-operated anti-discharge valve |
| CN113643831A (en) * | 2021-07-06 | 2021-11-12 | 中国核电工程有限公司 | Waste heat discharge system and method and nuclear power system |
-
2006
- 2006-12-13 CN CN 200620165788 patent/CN200979003Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048085A (en) * | 2013-12-27 | 2014-09-17 | 李潘宝 | Pilot-operated type pressure regulation valve |
| CN104048085B (en) * | 2013-12-27 | 2016-08-03 | 李潘宝 | A kind of pilot-operated type pressure regulator valve |
| CN104121398A (en) * | 2014-07-14 | 2014-10-29 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| CN104121398B (en) * | 2014-07-14 | 2017-01-18 | 中国海洋石油总公司 | Flow matching device suitable for material conveying of multiple branch pipelines |
| CN104565488A (en) * | 2015-01-26 | 2015-04-29 | 马景岗 | Steel-made welding pressure difference control valve |
| CN104864144A (en) * | 2015-05-07 | 2015-08-26 | 江苏神通阀门股份有限公司 | Self-operated anti-discharge valve |
| CN113643831A (en) * | 2021-07-06 | 2021-11-12 | 中国核电工程有限公司 | Waste heat discharge system and method and nuclear power system |
| CN113643831B (en) * | 2021-07-06 | 2024-05-10 | 中国核电工程有限公司 | Waste heat discharging system and method and nuclear power system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071121 |
|
| EXPY | Termination of patent right or utility model |