CN2534447Y - Pressure sensing guide valve - Google Patents
Pressure sensing guide valve Download PDFInfo
- Publication number
- CN2534447Y CN2534447Y CN 02222287 CN02222287U CN2534447Y CN 2534447 Y CN2534447 Y CN 2534447Y CN 02222287 CN02222287 CN 02222287 CN 02222287 U CN02222287 U CN 02222287U CN 2534447 Y CN2534447 Y CN 2534447Y
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- CN
- China
- Prior art keywords
- pressure
- sensing
- pilot valve
- utility
- sensing measurement
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- Expired - Fee Related
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- Fluid-Driven Valves (AREA)
Abstract
A pressure sensing measurement pilot valve used in oil and nature gas industry well site, automatic security switch off is realized when the pressure of the medium is ultra high or ultra low. The utility model belongs to the manufacturing technology field of fluid control device. The utility model designs a pressure sensing measurement pilot valve which integrates the sensing measurement mechanism with the signal gas discharging mechanism, comprising two parts of the sensing measurement mechanism and the signal gas discharging mechanism. Because the force balancing and pneumatic principle are applied in the utility model, the sensitivity and the precision of the high pressure or low pressure sensing measurement pilot valve are realized only when the spring is adjusted and the measuring value for high pressure or low pressure are pre set in ahead. The utility model is characterized by compact structure, easy adjustment, stable and reliable operation.
Description
A kind of pressure-sensing pilot valve is used for industrial gas oil well site and other industrial facility in the pressure medium superelevation or implement the pressure-sensing of auto-safety shut-off when ultralow, belongs to the manufacturing of fluid control apparatus
Technical field.
In the prior art, the pressure-sensing pilot valve that is used for petroleum industry well site safety cut-off system is high pressure, low pressure hybrid type sensing pilot valve, prior art problems is, because will take into account the function of sensing high pressure and low pressure simultaneously, therefore, not only volume is big, complex structure, and, regulate comparatively loaded down with trivial detailsly, also can directly have influence on the sensitivity and the validity of sensing.
The purpose of this utility model is to utilize equilibrium of forces and pneumatic principle, designs a kind of pressure-sensing pilot valve that sense mechanism and signal gas dredging discharging mechanism is designed to an integral body.
The purpose of this utility model is achieved in that the utility model is made up of sense mechanism and signal gas dredging discharging mechanism two-part; In high pressure sensing pilot valve when work,, under normal circumstances, when the power that is passed to piston and Regulation spring through sense rod when the pressure medium of sensing balanced each other, piston mediated, and pilot signal gas does not leak; When the pressure medium superelevation of sensing, sense rod drives piston and moves to the spring direction, under the dragging of piston circular groove, make T type spool crooked, and cause the V-seal face to produce the slit, at this moment, the pilot signal gas in Signal connector hole is through the discharging of the exhaust port of valve body and pressure release impels the actuator of well site safety cut-off system to close well head rapidly; During the work of low pressure sensing pilot valve, when the power of real-time sensed media pressure and Regulation spring and sense rod balances each other, piston mediates, pilot signal gas does not leak, when the pressure medium that senses is ultralow, Regulation spring can force piston to move to sensing plug screw direction, drag down at the piston circular groove, T type spool is crooked, and cause the V-seal face to produce the slit, at this moment, the pilot signal gas in Signal connector hole is through the discharging of the exhaust port of valve body and pressure release impels the actuator of well site safety cut-off system to close well head rapidly.
The utility model has the advantages that: owing to adopted equilibrium of forces and pneumatic principle, therefore, as long as Regulation spring is set the mensuration numerical value of high pressure or low pressure in advance, all can realize the sensitivity and the precision of high pressure or low pressure sensing pilot valve, can not produce the problem of high low pressure mixing sensing, and have compact structure, be convenient to regulate and the stable and reliable operation characteristics.
Fig. 1 is a structural drawing of the present utility model.
Provide embodiment of the present utility model below in conjunction with accompanying drawing: the utility model is made up of sense mechanism and signal gas dredging discharging mechanism two-part, wherein sense mechanism is made up of sensing plug screw (6), sense rod (5), seal assembly (4), piston (3), sensing spring (1), spring seat (12), adjusting screw rod (14), valve body (2), locking nut (13) and protective housing (15), laying at valve body (2) on the position of T type spool (7) has a V-seal face, and seal assembly (4) also can be whole; Signal gas dredging discharging mechanism is made up of signal gas joint (10), Sealing (8), preloading spring (9), sleeve (11), T type spool (7), T type spool (7) also has a V-seal face that adapts with valve body (2) V-seal face, T type spool (7) also can be the sealing surface on plane with the V-seal face of valve body (2); When carrying out the work of high pressure sensing, turn and regulate bolt (14) setting sense side pressure, sensing hole (16) is sensed media pressure in real time, the pressure that senses passes to piston (3) through sense rod (5), when the power of spring (1) and sense rod (5) balanced each other, piston (3) was in the neutral position of sensing spring (1) and sense rod (5); When the power of spring (1) and sense rod (5) balances each other, the V-seal face of the V-seal face of valve body (2) and T type spool (7) is close to, therefore, the pilot signal gas that is come by signal gas joint (10) top inlet hole (17) must not leak, when the pressure medium ultrahigh pressure in sensing hole (16), sense rod (5) drives piston (3) and moves to the direction of spring (1), under the dragging of piston (3) circular groove, the V-seal face of T type spool (7) takes place crooked, therefore, produce the slit between two V-seal faces, the pilot signal gas that is come by signal gas joint (10) top inlet hole (17) will discharge and pressure release through discharge orifice (18) through the slit that produces between two V-seal faces, impel the actuator of well site safety cut-out device to close well head rapidly, accident occurs to prevent well site upstream device or personnel; When carrying out the low pressure sensing, turn adjusting screw rod (14) and set pressure sensor, sensing hole (16) is sensed media pressure in real time, pressure sensor passes to piston (3) through sense rod (5), when the power of spring (1) and sense rod (5) balances each other, piston (3) is in the neutral position of spring (1) and sense rod (5), when the power of spring (1) and sense rod (5) balances each other, the V-seal face of the V-seal face of valve body (2) and T type spool (7) is close to, therefore, the pilot signal gas that is come by Signal connector (10) top inlet hole (17) must not pressure release, when the pressure medium super-low voltage in sensing hole (16), sense rod (5) drives piston (3) and moves to the direction of sensing plug screw (6), under the dragging of piston (3) circular groove, the V-seal face of T type spool (7) takes place crooked, therefore, produce the slit between two V-seal faces, will be by the pilot signal gas that signal gas joint (10) top inlet hole (17) comes through the slit that produces between two V-seal faces, through discharge orifice (18) discharging decompressing, impel the actuator of well site safety cut-out device to close well head rapidly, cause a large amount of losses of the energy and cause environmental pollution because of the explosion leakage with the gas pipeline that prevents the downstream, well site.
Claims (3)
1. a pressure-sensing pilot valve is made up of sense mechanism and signal gas dredging discharging mechanism two-part, it is characterized in that:
A. described sense mechanism is made up of sensing plug screw, sense rod, seal assembly, piston, sensing spring, spring seat, adjusting screw rod, valve body, locking nut and protective housing, and a V-seal face is arranged on valve body;
B. described signal gas dredging discharging mechanism is made up of Signal connector, Sealing, preloading spring, sleeve, T type spool, and a V-seal face that adapts with valve body V-seal face is also arranged on T type spool.
2. a kind of pressure-sensing pilot valve according to claim 1 is characterized in that: described V-seal face also can be the sealing surface on plane.
3. a kind of pressure-sensing pilot valve according to claim 1 is characterized in that: described seal assembly also can be whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02222287 CN2534447Y (en) | 2002-04-19 | 2002-04-19 | Pressure sensing guide valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02222287 CN2534447Y (en) | 2002-04-19 | 2002-04-19 | Pressure sensing guide valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534447Y true CN2534447Y (en) | 2003-02-05 |
Family
ID=33700234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02222287 Expired - Fee Related CN2534447Y (en) | 2002-04-19 | 2002-04-19 | Pressure sensing guide valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534447Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196483A (en) * | 2014-08-26 | 2014-12-10 | 乐山倍创机械制造有限公司 | Pneumatic wellhead shut-off device |
| CN104246643A (en) * | 2012-03-06 | 2014-12-24 | 费尔查德工业产品公司 | Systems and methods for a three chamber compensation network |
-
2002
- 2002-04-19 CN CN 02222287 patent/CN2534447Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246643A (en) * | 2012-03-06 | 2014-12-24 | 费尔查德工业产品公司 | Systems and methods for a three chamber compensation network |
| CN104196483A (en) * | 2014-08-26 | 2014-12-10 | 乐山倍创机械制造有限公司 | Pneumatic wellhead shut-off device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 618400, Dongfeng Road, 35 TING FANG, Shifang Patentee after: Shifang Huifeng Oil Recovery Machinery Co., Ltd. Address before: Sichuan City, Shifang city Shifang oil extraction machinery plant Patentee before: Oil Production Machinery Factory, Shifang City |
|
| 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 |