CN2122991U - Pressure-relief valve - Google Patents
Pressure-relief valve Download PDFInfo
- Publication number
- CN2122991U CN2122991U CN 92212602 CN92212602U CN2122991U CN 2122991 U CN2122991 U CN 2122991U CN 92212602 CN92212602 CN 92212602 CN 92212602 U CN92212602 U CN 92212602U CN 2122991 U CN2122991 U CN 2122991U
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- China
- Prior art keywords
- pressure
- diaphragm
- valve
- oil
- valve body
- 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.)
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Abstract
The utility model provides a pressure reducing valve installed in the branch of a pipeline for conveying petroleum product for reducing and stabilizing pressure. The pressure reducing valve is composed of a valve body, a valve cover, a valve core, a diaphragm, etc., wherein, the diaphragm is made of metallic materials, and the surface of the diaphragm is provided with corrugation. The pressure reducing valve has wide adaptation range to mediums, and the temperature and pressure of the mediums, and has high strength, high temperature, pressure, oil and corrosion resistant property, long service life, and safe use. The utility model is suitable for light oil, engine oil, lubricating oil, residual oil, etc., the medium temperature can reach 300 DEG C, and the pressure can reach 1MPa.
Description
The utility model provides a kind of reduction valve, is installed on the branch road of petroleum products conveyance conduit, by its decompression, voltage stabilizing.
Existing reduction valve is made of valve body, valve gap, spool, diaphragm, pressure preset mechanism etc. with reduction valve as Lanzhou Oil Refinery 101 types oil, and its diaphragm is made of dull and stereotyped rubber.Its deficiency is that diaphragm is dull and stereotyped rubber, and oil resistance and corrosion stability are poor, Applicable temperature and pressure range narrow (temperature is lower than 60 ℃, and pressure is lower than 0.4MPa).Intensity is low, and working life is short, perforation in the middle of the diaphragm, and leak is many, and Security, reliability are all relatively poor, bore φ 1mm aperture on the spool, and manufacturability is poor, and this valve narrow application range, is only applicable to light oil.
The purpose of this utility model is to overcome above-mentioned deficiency, and provides a kind of applied widely, long service life, safe and reliable reduction valve.
The purpose of this utility model is achieved in that reduction valve is made up of component such as valve body, valve gap, spool, diaphragm and pressure preset mechanisms, diaphragm is placed in valve body and valve cover chamber, diaphragm is made with metallic material, as stainless steel, copper, alloy etc., and its surface is rough and uneven in surface ripple, and ripple can be sinusoidal curve, step curve or other shape.
Advantage of the present utility model is: because diaphragm adopts the metallic material manufacturing, not perforate of centre, there is ripple on the surface, so intensity height, heatproof, oil resistant, corrosion resistance are all good, the temperature and pressure scope that is suitable for enlarges (temperature can reach 300 ℃, and pressure can reach 1MPa) greatly, and the Applicable media scope also enlarges greatly, as light oil, machine oil, lubricant oil, residual oil etc., spool component anufacturability is good.
Fig. 1 is the reduction valve erection drawing
Fig. 2 is the screw plan view
Fig. 3 is the spool plan view
Fig. 4 is the valve body plan view
Fig. 5 is the diaphragm plan view
Fig. 6 is the valve rod plan view
Fig. 7 is the valve rod plan view
In conjunction with the accompanying drawings, embodiment of the present utility model is further described.Reduction valve is made up of component such as valve body, valve gap, spool, diaphragm, pressure preset mechanisms, and filler opening R and oil outlet C are arranged on the valve body (9), and the valve body part also includes valve bonnet (10), filter screen (15) and parts such as coupling, Sealing thereof; Spool partly includes spool (12), spring (11), screw (13), valve rod (6), spring parts such as (8), they all are placed in the inner chamber of valve body (9), screw (13) uses scyewed joint on valve body (7), the last hole of screw (13) cooperates with valve rod (6), and following hole cooperates with spool (12); Pressure regulating mechanism includes spring (4), spring seat (3), (5), handle parts such as (1), they all are placed in the inner chamber of valve gap (2), and the lower end of spring seat (5) contacts with diaphragm (7), and handle with sleeve (1) can be adjusted the precompression of spring (4) to diaphragm (7); Valve body (9) is used Bolt Connection with valve gap (2), in the middle of them diaphragm (7) is arranged, and the cavity between diaphragm (7) and valve body (9) is oil pocket B, and diaphragm (7) is used the corrosion resistant plate manufacturing, and surface configuration is a sinusoidal curve.Oil from high pressure pipe line enters oil pocket A by filler opening R, and the aperture (14) on filter screen and valve body (9) enters oil pocket B, and the slotted eye on valve rod (3) is descending again, by the damping hole on the screw (13), flows out from oil outlet C behind spool (12).This valve is owing to adopted said structure, even if the input oil pressure has bigger fluctuation, output oil pressure also stable (or fluctuation is little), for example, when the input oil pressure raise, diaphragm (7) was just upwards heaved, and spool (12) moves under the active force of spring (11), damping hole open degree on the screw (13) is reduced, thereby output oil pressure is not raise; Otherwise when the input oil pressure reduced, output oil pressure did not reduce.
Claims (3)
1, reduction valve is made up of component such as valve body, valve gap, spool, diaphragm and pressure preset mechanisms, and diaphragm is placed in valve body and valve cover chamber, of the present utility model being characterised in that: diaphragm (7) metallic material manufacturing, and there is ripple on its surface.
2,, it is characterized in that diaphragm (7) makes with corrosion resistant plate according to the reduction valve of claim 1.
3, according to the reduction valve of claim 1 or 2, the external waviness that it is characterized in that diaphragm (7) is a sinusoidal curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212602 CN2122991U (en) | 1992-04-07 | 1992-04-07 | Pressure-relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212602 CN2122991U (en) | 1992-04-07 | 1992-04-07 | Pressure-relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122991U true CN2122991U (en) | 1992-11-25 |
Family
ID=4957471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92212602 Granted CN2122991U (en) | 1992-04-07 | 1992-04-07 | Pressure-relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301298B (en) * | 2009-02-02 | 2013-08-28 | 株式会社京浜 | Pressure reducing valve |
-
1992
- 1992-04-07 CN CN 92212602 patent/CN2122991U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301298B (en) * | 2009-02-02 | 2013-08-28 | 株式会社京浜 | Pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |