CN2525327Y - Pressur meter self seal control valve - Google Patents
Pressur meter self seal control valve Download PDFInfo
- Publication number
- CN2525327Y CN2525327Y CN 02209809 CN02209809U CN2525327Y CN 2525327 Y CN2525327 Y CN 2525327Y CN 02209809 CN02209809 CN 02209809 CN 02209809 U CN02209809 U CN 02209809U CN 2525327 Y CN2525327 Y CN 2525327Y
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- valve body
- pressure gauge
- pressure
- 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.)
- Expired - Fee Related
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- Indication Of The Valve Opening Or Closing Status (AREA)
- Safety Valves (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A pressure meter self seal control valve relates to the designing and manufacturing technology of control valve in pressure gauge pipeline in petroleum and chemical industry, consisting of a valve body, a valve core and a piston, wherein, the valve core is arranged inside the valve body;, a gasket is arranged between the valve body and the valve core; the chamber of the valve core is provided inside with a piston position limit rod of arranged with a spring; the valve core is provided with a sealing ring, a gap is arranged between the chamber of the valve core and the position limit rod of the piston as well as between the piston and the valve body; an airflow guiding body is arranged at the end of the valve body. The utility model mainly solves the problem that when the pressure testing section of the pressure gauge is broken, a media discharging channel can be closed on time. The utility model is reasonable in structure, easy in operation and installation with good safety performance. When the control valve is arranged at the air inlet of the pressure gauge and the pressure gauge works normally, the piston is slightly floated up in the valve body, and the tested media can enter the pressure testing location from the position between the valve body and the piston for pressure testing. When the pressure testing location of the pressure gauge is leaked, the tested media can lift up the piston automatically to match with the sealing ring of the valve core, and the media discharging channel can be closed instantaneously so as to prevent the tested media from leakage. The applicable pipe pressure is small and equal than 0.1MPa.
Description
(1) technical field:
The utility model relates to the design and fabrication technology that petroleum chemical industry is used for the system control valve of pressure gauge pipeline.
(2) background technique:
Existing pressure gauge directly is communicated with the measured medium pipeline by pipeline connecting parts, and measured medium link inner chamber by the road enters the pressure measurement position, carries out pressure measurement.Its shortcoming is: break because of excess overload pressure table pressure measurement position, measured medium leaks, and can not close the medium channel that leaks immediately, causes unsafe hidden danger.
(3) summary of the invention:
The utility model solves pressure gauge pressure measurement position emphatically when breaking, and in time closes the problem of the medium channel that leaks.
The technical solution of the utility model is: be made of valve body, spool and piston, spool is housed in the valve body, be pad between valve body and the spool, it in the valve core cavity piston position-limited lever that spring is housed, seal ring is arranged on the spool, between valve core cavity and the piston position-limited lever and gapped between piston and the valve body, valve end is the air-flow guide way.
The utility model beneficial effect is: should make the control valve and be contained in the pressure gauge suction port, during the pressure gauge proper functioning, the pressure measurement position is in serviceable condition, measured medium enters valve body by the air-flow guide way, at this moment, piston has slight come-up in valve body under the effect of measured medium, make measured medium by entering the pressure measurement position between valve body and the piston, carry out pressure measurement.When leaked at pressure gauge pressure measurement position, because crunch in the pipeline and pressure measurement position form pressure difference, measured medium held up piston with valve core seal ring voluntarily and matches, and moment is closed the medium channel that leaks, and prevented that measured medium from leaking.Suitable conduit pressure≤0.1MPa.Rational in infrastructure, easy to install and use, high safety.
(4) description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model normal operating condition schematic representation.
Fig. 3 has the leakage working condition chart for the utility model.
(5) embodiment:
Pressure gauge is from close type system control valve, as shown in Figure 1, constitute by valve body, spool and piston, the spool 6 that is threaded in the valve body 1 is a pad 4 between valve body and the spool, in the valve core cavity for the piston position-limited lever 2 of spring 5 is housed, seal ring 3 is arranged on the spool, between valve core cavity and the piston position-limited lever and gapped between piston 7 and the valve body, the gap is 0.005mm, the valve end air-flow guide way 8 that is threaded.For satisfying various operating mode demands, each part material is preferably stainless steel, and special circumstances also can adopt copper, and the pad material is a teflon.Adopt machining technique just can produce, machining accuracy is higher.
Pressure gauge, is made of valve body, spool and piston as Fig. 2, shown in Figure 3 from close type system control valve, system control valve directly and pressure gauge make one, system control valve is manometric pipeline connecting parts, and valve body 1 inner chamber communicates with pressure measurement position inner chamber, has so just formed the pressure gauge that has from close type system control valve.Satisfy the inflammable and explosive and on-the-spot tonometric needs of poisonous gas of petrochemical industry.
Claims (3)
1, pressure gauge is from close type system control valve, constitute by valve body, spool and piston, it is characterized in that: spool [6] is housed in the valve body [1], it in the valve core cavity piston position-limited lever [2] that spring [5] is housed, seal ring [3] is arranged on the spool, between valve core cavity and piston [7] position-limited lever and gapped between piston and the valve body, valve end is air-flow guide way [8].
2, pressure gauge according to claim 1 is characterized in that from close type system control valve: be pad [4] between valve body and the spool.
3, pressure gauge according to claim 1 is characterized in that from close type system control valve: the gap is 0.005mm between piston [7] and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209809 CN2525327Y (en) | 2002-01-18 | 2002-01-18 | Pressur meter self seal control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209809 CN2525327Y (en) | 2002-01-18 | 2002-01-18 | Pressur meter self seal control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525327Y true CN2525327Y (en) | 2002-12-11 |
Family
ID=33690145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02209809 Expired - Fee Related CN2525327Y (en) | 2002-01-18 | 2002-01-18 | Pressur meter self seal control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525327Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233902A (en) * | 2021-11-09 | 2022-03-25 | 中国长江电力股份有限公司 | Gauge front pipe fitting capable of being automatically closed in case of pressure loss |
-
2002
- 2002-01-18 CN CN 02209809 patent/CN2525327Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233902A (en) * | 2021-11-09 | 2022-03-25 | 中国长江电力股份有限公司 | Gauge front pipe fitting capable of being automatically closed in case of pressure loss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |