CN101339086A - Pressure sensor possessing high pressure overload protection - Google Patents
Pressure sensor possessing high pressure overload protection Download PDFInfo
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- CN101339086A CN101339086A CNA2007100434693A CN200710043469A CN101339086A CN 101339086 A CN101339086 A CN 101339086A CN A2007100434693 A CNA2007100434693 A CN A2007100434693A CN 200710043469 A CN200710043469 A CN 200710043469A CN 101339086 A CN101339086 A CN 101339086A
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- pressure
- overload protection
- signal generator
- film
- chamber
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Abstract
The invention provides a pressure sensor with high-pressure overload protection. One side of a chamber is provided with an external measuring film which can transmit pressure; the other side is provided with an overload protection moving film which can move along with the pressure; a pressure signal generator is arranged on the overload protection moving film; the testing terminal of the pressure signal generator is communicated with the external measuring film through the silicone oil in the chamber. In the process of measuring the pressure, when the external measuring film and the silicone oil transmits the pressure to the pressure signal generator, the overload protection moving film moves towards the external side. When the excessive pressure occurs, the displacement of the overload protection film moving towards the outside results in the overlapping of the external measuring film on the other side and the inner wall of the chamber; the silicone oil in the position of the measuring film is completely driven into the chamber in the position of the overload protection moving film; the higher pressure value can not be further transmitted towards the pressure signal generator; thus the pressure sensor prevents the excessive pressure of the generator, and realizes the purpose of protecting the pressure signal generator.
Description
Affiliated technical field
The present invention relates to a kind of device for pressure measurement, especially possess the pressure transducer of high pressure overload protection.
Background technology
At present, known pressure transducer is made up of chamber, measuring diaphragm and pressure signal generator.The measuring diaphragm pressure that the external world is different is directed to the chamber of sensor, produces pressure signal output by pressure signal generator then.But, much measure occasion owing to the human operational error, or occur the compression shock and the fluctuation of improper property in the pressure piping, be easy to generate the pressure signal of overpressure sensor test range far away, make pressure transducer be under the pressure overload conditions.General pressure transducer does not have the high pressure overload protection function, is easy to cause the pressure sensor signal generator to damage in this occasion, makes pressure transducer owing to the pressure overload stops measuring.
Summary of the invention
In order to overcome the deficiency that existing pressure transducer damages easily under the operating mode that the pressure overload takes place; the invention provides a kind of pressure transducer with the high pressure overload protection; the pressure transducer of this band high pressure overload protection can not only be measured the force value of field working conditions; and under the situation that the pressure overload takes place, can also carry out self-protection effectively, avoid because the damage that the pressure overload causes.
The technical solution adopted for the present invention to solve the technical problems is: the side at chamber is provided with an extraneous measuring diaphragm (measuring junction) that can transmit pressure; at the opposite side of chamber an overload protection moving film that can move with pressure is set; a pressure signal generator is set on this overload protection moving film, and the test lead of pressure signal generator is by charging silicone oil and the extraneous measuring diaphragm conducting in chamber.In the measure field press process, when the pressure signal generator of inside transmitted pressure and measures force value, the overload protection moving film also can be because of existence side shifting outside sensor of force value by extraneous measuring diaphragm and silicone oil.When the overpressure signal generator allows the pressure of working range to occur; overload protection moving film degree of side shifting outside sensor is enough to make the extraneous measuring diaphragm of measuring junction and chamber inner wall to overlap; thereby make measuring junction silicone oil all catch up with in the chamber; can't further transmit higher force value to pressure signal generator; finally on pressure signal generator, avoid the generation of UHV (ultra-high voltage), realized the purpose of protection pressure signal generator effectively.
The invention has the beneficial effects as follows, can distinguish service pressure and hyperpressure effectively in gaging pressure, the overload protection moving film adopts high resiliency metal foil diaphragm, and is simple in structure.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a structure principle chart of the present invention.
Fig. 2 is the fundamental diagram that the pressure transducer of band high pressure overload protection is implemented the high pressure overload protection.
1. overload protection moving films among the figure, 2. silicone oil, 3. extraneous measuring diaphragm, 4. pressure signal generator, 5. chamber.
Embodiment
In Fig. 1, the extraneous measuring diaphragm of measuring junction (3) transmits pressure by the silicone oil (2) that charges to the test lead of overload protection moving film (1) that is arranged on chamber (5) opposite side and pressure signal generator (4).Along with pressure increases overload protection moving film (1) displacement laterally, displacement and force value are directly proportional.Usually the maximum displacement of overload protection moving film (1) is the displacement of extraneous measuring diaphragm (3) and the coincidence of chamber (5) inwall, and the force value that produces this displacement is got this pressure transducer full scale Pm of 1.5 times usually.The final maximum pressure value that is passed to pressure signal generator (5) of realizing is controlled in 1.5 times.
In the embodiment of high pressure overload protection shown in Figure 2; when the pressure overload; during pressure P 〉=1.5Pm; extraneous measuring diaphragm (3) and chamber (5) inwall overlap; while overload protection moving film (1) direction laterally moves; locate thereby the interior silicone oil (2) of chamber (5) measuring junction is all caught up with into opposite side overload protection moving film (1), can't further transmit higher force value, finally reach the purpose of forward one-way high-pressure power overload protection to pressure signal generator (4) test lead.
Claims (1)
1. pressure transducer with the high pressure overload protection, its chamber top is provided with an overload protection moving film, and a pressure signal generator is set on this diaphragm.It is characterized in that: the one side of overload protection moving film band pressure signal generator contacts with chamber silicone oil, along with the variation of pressure is subjected to displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100434693A CN101339086A (en) | 2007-07-05 | 2007-07-05 | Pressure sensor possessing high pressure overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100434693A CN101339086A (en) | 2007-07-05 | 2007-07-05 | Pressure sensor possessing high pressure overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101339086A true CN101339086A (en) | 2009-01-07 |
Family
ID=40213210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100434693A Pending CN101339086A (en) | 2007-07-05 | 2007-07-05 | Pressure sensor possessing high pressure overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101339086A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435381A (en) * | 2011-11-08 | 2012-05-02 | 西安交通大学 | Liquid-state metallic sodium experiment loop pressure sensor |
| CN102445302A (en) * | 2010-09-30 | 2012-05-09 | 浙江三花股份有限公司 | Pressure sensor |
| CN103091066A (en) * | 2013-01-17 | 2013-05-08 | 中国科学院力学研究所 | Protection device of hypersonic flowing pitot pressure sensor |
| CN103364132A (en) * | 2013-07-25 | 2013-10-23 | 安徽皖科电子工程有限公司 | Pressure sensor with overpressure protective device |
| WO2013159583A1 (en) * | 2012-04-28 | 2013-10-31 | 浙江三花股份有限公司 | Heat exchange device and pressure sensor thereof |
| CN103792037A (en) * | 2012-11-01 | 2014-05-14 | 许春萌 | Pressure gauge protection device |
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN104048797A (en) * | 2013-03-12 | 2014-09-17 | 福建上润精密仪器有限公司 | High-overload-resistant structure protecting pressure/differential-pressure transmitters |
| CN104266790A (en) * | 2014-09-30 | 2015-01-07 | 成都卓微科技有限公司 | Double-diaphragm type underwater pressure sensor with limiting structure |
| CN104330197A (en) * | 2014-10-16 | 2015-02-04 | 宝鸡百事得控制技术有限公司 | High pressure resistant overload pressure transmitter |
| CN104776953A (en) * | 2015-04-15 | 2015-07-15 | 江苏德尔森传感器科技有限公司 | Detection method of fluid medium pressure difference value |
| CN106124116A (en) * | 2016-07-27 | 2016-11-16 | 安费诺(常州)连接系统有限公司 | For detecting pressure transducer and the method for opposing liquid freezing and expansion pressure thereof of hydraulic pressure |
| CN106225987A (en) * | 2016-08-12 | 2016-12-14 | 山东佰测传感科技股份有限公司 | Anti-overvoltage stress instrument |
| CN108489659A (en) * | 2018-04-15 | 2018-09-04 | 无锡盛赛传感科技有限公司 | A kind of extra-high tension pressure sensor |
| CN110383028A (en) * | 2017-03-10 | 2019-10-25 | 霍尼韦尔国际公司 | The pressure sensor with overvoltage protection that output error reduces |
-
2007
- 2007-07-05 CN CNA2007100434693A patent/CN101339086A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445302A (en) * | 2010-09-30 | 2012-05-09 | 浙江三花股份有限公司 | Pressure sensor |
| CN102435381A (en) * | 2011-11-08 | 2012-05-02 | 西安交通大学 | Liquid-state metallic sodium experiment loop pressure sensor |
| CN102435381B (en) * | 2011-11-08 | 2014-11-05 | 西安交通大学 | Liquid-state metallic sodium experiment loop pressure sensor |
| WO2013159583A1 (en) * | 2012-04-28 | 2013-10-31 | 浙江三花股份有限公司 | Heat exchange device and pressure sensor thereof |
| CN103792037A (en) * | 2012-11-01 | 2014-05-14 | 许春萌 | Pressure gauge protection device |
| CN103913270A (en) * | 2013-01-05 | 2014-07-09 | 上海朝辉压力仪器有限公司 | Calibration device and operation method thereof |
| CN103091066B (en) * | 2013-01-17 | 2015-09-09 | 中国科学院力学研究所 | Hypersonic flowing pitot pressure protector for sensor |
| CN103091066A (en) * | 2013-01-17 | 2013-05-08 | 中国科学院力学研究所 | Protection device of hypersonic flowing pitot pressure sensor |
| CN104048797A (en) * | 2013-03-12 | 2014-09-17 | 福建上润精密仪器有限公司 | High-overload-resistant structure protecting pressure/differential-pressure transmitters |
| CN103364132A (en) * | 2013-07-25 | 2013-10-23 | 安徽皖科电子工程有限公司 | Pressure sensor with overpressure protective device |
| CN104266790A (en) * | 2014-09-30 | 2015-01-07 | 成都卓微科技有限公司 | Double-diaphragm type underwater pressure sensor with limiting structure |
| CN104330197A (en) * | 2014-10-16 | 2015-02-04 | 宝鸡百事得控制技术有限公司 | High pressure resistant overload pressure transmitter |
| CN104776953A (en) * | 2015-04-15 | 2015-07-15 | 江苏德尔森传感器科技有限公司 | Detection method of fluid medium pressure difference value |
| CN106124116A (en) * | 2016-07-27 | 2016-11-16 | 安费诺(常州)连接系统有限公司 | For detecting pressure transducer and the method for opposing liquid freezing and expansion pressure thereof of hydraulic pressure |
| CN106225987A (en) * | 2016-08-12 | 2016-12-14 | 山东佰测传感科技股份有限公司 | Anti-overvoltage stress instrument |
| CN110383028A (en) * | 2017-03-10 | 2019-10-25 | 霍尼韦尔国际公司 | The pressure sensor with overvoltage protection that output error reduces |
| CN110383028B (en) * | 2017-03-10 | 2021-07-30 | 霍尼韦尔国际公司 | Pressure sensor with overvoltage protection with reduced output error |
| CN108489659A (en) * | 2018-04-15 | 2018-09-04 | 无锡盛赛传感科技有限公司 | A kind of extra-high tension pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090107 |