CN201795887U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN201795887U CN201795887U CN2010205172389U CN201020517238U CN201795887U CN 201795887 U CN201795887 U CN 201795887U CN 2010205172389 U CN2010205172389 U CN 2010205172389U CN 201020517238 U CN201020517238 U CN 201020517238U CN 201795887 U CN201795887 U CN 201795887U
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- China
- Prior art keywords
- sensor
- pressure
- sensor housing
- control valve
- conduction hole
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- Expired - Fee Related
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- Indication Of The Valve Opening Or Closing Status (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model provides a pressure sensor which comprises a sensor housing, an induction diaphragm and a sensor upper cover, wherein the sensor upper cover is connected with the sensor housing, the induction diaphragm is arranged between the bottom of the sensor upper cover and the inner cavity of the sensor housing, the sensor housing is connected with an external pipeline, the external pipeline is directly communicated with the inner cavity of the sensor housing through a sensor interface, and at least one pressure control valve is mounted to the sensor housing in the position below the induction diaphragm. The pressure control valve is a one-way control valve consisting of a front drainage hole, a bearing ball, a spring, a rear drainage hole and a control valve chamber, wherein the front drainage hole, the control valve chamber and the rear drainage hole are communicated in sequence; the front drainage hole is communicated with the inner cavity of the sensor; and the rear drainage hole is communicated with the external environment. The pressure sensor can release the instantaneous high pressure to avoid the overload of the induction diaphragm inside the sensor, and can drain the liquid water generated due to moisture condensation around the valve. The pressure sensor has simple structure, is convenient to use and is widely applied in various places.
Description
Technical field
The utility model belongs to the pressure sensor design field, particularly a kind of pressure transducer.
Background technology
Pressure transducer is a kind of sensor the most commonly used in the industrial practice, is widely used in various industrial automatic control environment, and for example hydraulic pressure or pneumatic system etc. are used for the pressure of measuring system region of interest.But the pressure sensor structure that generally uses is simple at present, function singleness, when valve switch or pumping plant keying etc. caused system's internal pressure instantaneous variation, the instantaneous pressure of appearance tended to the maximum rated pressure of overpressure sensor internal induction diaphragm, makes this pressure transducer destroyed.In addition when with pneumatic system that air contacts in during the working pressure sensor, if be rich in water vapor in the air, near and the air dew point temperature body surface temperature is lower than and occur condensate water on the surface, promptly produce the dewfall phenomenon, also water hammer can occur when in pipeline, instantaneous pressure occurring so.
Therefore, need provide a kind of pressure transducer that can either pressure release can discharge condensate water function in the sensor again simultaneously.
The utility model content
Fundamental purpose of the present utility model is to overcome the shortcoming and the deficiency of prior art, and a kind of pressure transducer is provided, and it has pressure release and discharges condensate water function in the sensor, and is simple in structure, and is easy to use, safe effective.
The purpose of this utility model realizes by following technical scheme: a kind of pressure transducer, comprise sensor housing, reaction diaphragm, sensor loam cake, the sensor loam cake is connected with sensor housing, be provided with reaction diaphragm between the sensor loam cake bottom sensor inner chamber, sensor housing is connected with external pipe, external pipe directly communicates with the sensor inner chamber by sensor interface, be positioned at described reaction diaphragm downside place at sensor housing and be provided with at least one pressure control valve, pressure control valve valve pocket one end is communicated with inner chamber in the sensor, and the other end communicates with the external world.
As preferred version, described pressure control valve is an one-way control valve, comprises preceding conduction hole, ball, spring, back conduction hole and operation valve valve pocket, and preceding conduction hole, operation valve valve pocket, back conduction hole are communicated with successively; Conduction hole is communicated with the sensor inner chamber before described, and back conduction hole communicates with the external world.
Described operation valve valve pocket is made up of conical section and cylindrical section two parts.
Described ball and preceding conduction hole apical grafting are positioned at operation valve valve pocket conical section part.
Described spring one end and ball compress, and the other end links to each other with sensor housing, are positioned at operation valve valve pocket cylindrical section part.
Between described sensor loam cake and the sensor housing, between sensor housing and the external pipe all by being threaded.
Principle of the present utility model: when owing to valve switch or pumping plant keying etc. the pressure instantaneous variation taking place in system, pressure in the pipeline reaches the sensor inner chamber, give thrust of ball by preceding conduction hole, make the ball compression spring, open pressure control valve, thereby gas in the pipeline is discharged extraneous, make pressure in the pressure transducer be lower than the maximum rated pressure of reaction diaphragm, reach the purpose of pressure release.Simultaneously, when pressure control valve was opened, near the liquid water that is produced by dewfall the preceding conduction hole conduction hole that also can be rushed ahead under the effect of pressure was discharged the sensor outside along the operation valve valve pocket from the back conduction hole.After treating that manifold pressure is stable, ball compresses operation valve valve pocket conical section operative tip under the pretightning force effect of spring, thus the closing presure operation valve.
The utility model compared with prior art has following advantage and beneficial effect:
1, this pressure transducer in the time of can instantaneous pressure occurring in sensor, reduces the sensor cavity internal pressure by a pressure control valve is set, and reaches the non-overloading effect of protection sensor internal induction diaphragm.
2, the utility model is by being provided with pressure control valve, and in the time of can instantaneous pressure occurring in sensor, with valve open, thereby near the liquid water that will be produced by dewfall valve is discharged sensor, avoids water hammer.
3, the pressure control valve in the utility model is organically combined by spring and ball and forms, and is simple in structure, easy to use, can be applicable to multiple occasion.
Description of drawings
Fig. 1 is the cross-sectional view of the utility model pressure transducer;
Fig. 2 is the partial enlarged drawing of pressure control valve in the pressure transducer shown in Figure 1.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, this pressure transducer, comprise sensor housing 5, reaction diaphragm 3, sensor loam cake 1, sensor loam cake 1 is connected with sensor housing 5, be provided with reaction diaphragm 3 between the sensor loam cake 1 bottom sensor inner chamber 6, sensor housing 5 is connected with external pipe, external pipe directly communicates with sensor inner chamber 6 by sensor interface 8, be positioned at described reaction diaphragm 3 downside places at sensor housing 5 and be provided with at least one pressure control valve 4, pressure control valve valve pocket one end is communicated with sensor inner chamber 6, and the other end communicates with the external world.
As shown in Figure 2, described pressure control valve 4 is an one-way control valve, conduction hole 9, ball 10, spring 12, back conduction hole 13 and operation valve valve pocket before comprising, and preceding conduction hole 9, operation valve valve pocket, back conduction hole 13 are communicated with successively; Preceding conduction hole 9 is communicated with sensor inner chamber 6, and back conduction hole 13 communicates with the external world.Described operation valve valve pocket is made up of conical section 11 and cylindrical section 14 two parts.Described ball 10 and preceding conduction hole 9 apical graftings are positioned at operation valve valve pocket conical section 11 parts.Described spring 12 1 ends and ball 10 compress, and the other end links to each other with sensor housing 5, are positioned at operation valve valve pocket cylindrical section 14 parts.
As shown in Figure 1, be connected by thread segment 2 between described sensor loam cake 1 and the sensor housing 5, be connected by thread segment 7 between sensor housing 5 and the external pipe.
Principle of the present utility model: when owing to valve switch or pumping plant keying etc. the pressure instantaneous variation taking place in system, pressure in the pipeline reaches sensor inner chamber 6, give 10 1 thrusts of ball by preceding conduction hole 9, make ball 10 compression springs 12, open pressure control valve 4, thereby gas in the pipeline is discharged extraneous, make pressure in the pressure transducer be lower than the maximum rated pressure of reaction diaphragm, reach the purpose of pressure release.Simultaneously, when pressure control valve was opened, near the liquid waters that produced by dewfall the preceding conduction hole 9 conduction hole 9 that also can be rushed ahead under the effect of pressure was discharged the sensors outside along the operation valve valve pocket from back conduction hole 13.After treating that manifold pressure is stable, ball 10 compresses operation valve valve pocket conical section 11 operative tips under the pretightning force effect of spring 12, thus the closing presure operation valve.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. pressure transducer, comprise sensor housing, reaction diaphragm, sensor loam cake, it is characterized in that, the sensor loam cake is connected with sensor housing, be provided with reaction diaphragm between the sensor loam cake bottom sensor inner chamber, sensor housing is connected with external pipe, external pipe directly communicates with the sensor inner chamber by sensor interface, be positioned at described reaction diaphragm downside place at sensor housing and be provided with at least one pressure control valve, pressure control valve valve pocket one end is communicated with the sensor inner chamber, and the other end communicates with the external world.
2. pressure transducer according to claim 1 is characterized in that: described pressure control valve is an one-way control valve, comprises preceding conduction hole, ball, spring, back conduction hole and operation valve valve pocket, and preceding conduction hole, operation valve valve pocket, back conduction hole are communicated with successively; Conduction hole is communicated with the sensor inner chamber before described, and back conduction hole communicates with the external world.
3. pressure transducer according to claim 2 is characterized in that: described operation valve valve pocket is made up of conical section and cylindrical section two parts.
4. pressure transducer according to claim 2 is characterized in that: described ball and preceding conduction hole apical grafting are positioned at operation valve valve pocket conical section part.
5. pressure transducer according to claim 2 is characterized in that: described spring one end and ball compress, and the other end links to each other with sensor housing, are positioned at operation valve valve pocket cylindrical section part.
6. pressure transducer according to claim 1 is characterized in that: between described sensor loam cake and the sensor housing, between sensor housing and the external pipe all by being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172389U CN201795887U (en) | 2010-09-01 | 2010-09-01 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205172389U CN201795887U (en) | 2010-09-01 | 2010-09-01 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201795887U true CN201795887U (en) | 2011-04-13 |
Family
ID=43850793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205172389U Expired - Fee Related CN201795887U (en) | 2010-09-01 | 2010-09-01 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201795887U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158957A (en) * | 2013-03-06 | 2013-06-19 | 三一重工股份有限公司 | Powder tank, pressure testing device of powder tank and stirring station |
| CN107542937A (en) * | 2016-06-29 | 2018-01-05 | Ckd株式会社 | Control valve for fluids with sensor |
| CN110763395A (en) * | 2019-10-30 | 2020-02-07 | 南京高华科技股份有限公司 | Pressure measuring device |
-
2010
- 2010-09-01 CN CN2010205172389U patent/CN201795887U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103158957A (en) * | 2013-03-06 | 2013-06-19 | 三一重工股份有限公司 | Powder tank, pressure testing device of powder tank and stirring station |
| CN103158957B (en) * | 2013-03-06 | 2015-10-28 | 三一重工股份有限公司 | Powder tank and pressure test device, mixing plant |
| CN107542937A (en) * | 2016-06-29 | 2018-01-05 | Ckd株式会社 | Control valve for fluids with sensor |
| CN110763395A (en) * | 2019-10-30 | 2020-02-07 | 南京高华科技股份有限公司 | Pressure measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130901 |