CN103017974A - Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium - Google Patents
Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium Download PDFInfo
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- CN103017974A CN103017974A CN2011102888771A CN201110288877A CN103017974A CN 103017974 A CN103017974 A CN 103017974A CN 2011102888771 A CN2011102888771 A CN 2011102888771A CN 201110288877 A CN201110288877 A CN 201110288877A CN 103017974 A CN103017974 A CN 103017974A
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Abstract
The invention discloses a novel transmissible pressure and differential pressure transmitter for measuring pressure of an ultrahigh temperature medium. A measuring diaphragm and an isolating diaphragm are respectively welded on the outer end faces of a connecting flange and an isolating flange, a radiating tube is welded between the connecting flange and the isolating flange, and then ultrahigh temperature resistant high-viscosity high-temperature tube filling liquid is injected to form an ultrahigh temperature tube filling liquid cavity; and a matching flange is welded on the other end of the isolating flange to connect a stainless steel capillary tube and the pressure and differential pressure transmitter, and low-viscosity high-temperature tube filling liquid is injected to form a normal high-temperature tube filling liquid cavity. In the working process, the pressure of the ultrahigh temperature medium is transmitted to the isolating diaphragm through the ultrahigh temperature resistant high-viscosity high-temperature tube filling liquid, and then transmitted to the main body of the pressure and differential pressure transmitter through the low-viscosity high-temperature tube filling liquid in the stainless steel capillary so that the pressure transmission and measurement are realized. By means of high temperature isolation and radiation, the ultrahigh temperature is not directly transmitted to the low-viscosity high-temperature tube filling liquid so as to protect the high-temperature transmissible pressure and differential pressure transmitter and realize the pressure measurement of the ultrahigh temperature medium.
Description
Affiliated technical field
The present invention relates to a kind of novel teletransmission pressure, differential pressure transmitter, it is fit to the measurement of superhigh temperature medium more than 400 ℃, can be widely used in the industrial circles such as chemical industry, electric power, oil, metallurgy.
Background technology
At present in pressure, differential pressure transmitter industry, the teletransmission pressure of known measurement high-temperature medium, differential pressure transmitter charges liquid by bellows, stainless steel capillary, high viscosity high temperature with measuring diaphragm or low viscosity high temperature charges liquid and pressure, differential pressure transmitter body form.When measuring high-temperature medium, select full-bodied high temperature to charge liquid, it is this that to charge the liquid boiling point high, but liquid fluidity is poor, has affected the transmission speed of Stainless Steel Capillary overpressure, causes teletransmission pressure, differential pressure transmitter delay of response, and the response time is long; Select low viscous high temperature to charge liquid, although its good fluidity, boiling point is low, when medium temperature was higher than its boiling point, the high temperature in the cavity charged liquid and will gasify moment, and volumetric expansion directly causes measuring diaphragm to be heaved, and forever irrecoverable, cause function to damage.This teletransmission pressure, differential pressure transmitter are subjected to high temperature to charge the impact of liquid characteristic, do not possess the ability of measuring the superhigh temperature pressure medium more than 400 ℃.
Summary of the invention
In order to overcome existing teletransmission pressure, the deficiency that differential pressure transmitter is measured for the superhigh temperature pressure medium, the invention provides a kind of teletransmission pressure of novel measurement superhigh temperature pressure medium, differential pressure transmitter, this superhigh temperature teletransmission pressure, differential pressure transmitter adopts brand-new split-type structural design, utilize the high viscosity high temperature of superhigh temperature resistant to charge the method that liquid and low viscous high temperature charge the liquid phase combination, and make high viscosity high temperature charge liquid to press close to the superhigh temperature medium, make low viscosity high temperature charge liquid away from the superhigh temperature medium, thereby guaranteeing superhigh temperature teletransmission pressure, in the time of response time of differential pressure transmitter, can adapt to the medium temperature more than 400 ℃.
The technical solution adopted in the present invention is: measuring diaphragm and isolation diaphragm are welded respectively in the outer face of joint flange, isolation flange, then heat-dissipating cylinder is welded to connect between joint flange and isolation flange, the high viscosity high temperature of superhigh temperature resistant of reinjecting charges liquid, forms a superhigh temperature and charges the sap cavity body; Other end pairing welding one companion flange at isolation flange connects stainless steel capillary and pressure, differential pressure transmitter, injects low viscosity high temperature and charges liquid, forms a common high temperature and charges the sap cavity body.During work, the high viscosity high temperature of superhigh temperature pressure medium by superhigh temperature resistant charges liquid and is delivered to isolation diaphragm, isolation diaphragm charges liquid by low viscosity high temperature in the stainless steel capillary again the superhigh temperature pressure medium is delivered to pressure, differential pressure transmitter body, has realized pressure transmission and measurement.The high temperature that charges the sap cavity body by superhigh temperature is isolated and heat radiation, and ultra-high temperature can not be delivered to low viscous high temperature and charge liquid, thereby has protected superhigh temperature teletransmission pressure, differential pressure transmitter, has realized the measurement of superhigh temperature pressure medium.
The invention has the beneficial effects as follows that this novel teletransmission pressure, the pressure survey that differential pressure transmitter can be realized the superhigh temperature medium guarantee itself not to be damaged simultaneously.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is structure principle chart of the present invention.
Fig. 2 is fundamental diagram of the present invention.
1. measuring diaphragms among the figure, 2. joint flange, 3. heat-dissipating cylinder, 4. superhigh temperature charges the hole, 5. high temperature charges the hole, 6. capillary tube connector, 7. stainless steel capillary, 8. pressure, differential pressure transmitter body, 9. low viscosity high temperature charges liquid, 10. companion flange, 11. isolation diaphragms, 12. isolation flange, 13. high viscosity high temperature charge liquid.
Embodiment
In Fig. 1, measuring diaphragm (1) and isolation diaphragm (11) are arranged respectively in joint flange (2), isolation flange (12) two outer faces, heat-dissipating cylinder (3) is welded to connect between joint flange (2) and isolation flange (12), charge hole (4) by the superhigh temperature on the isolation flange (12), the high viscosity high temperature of superhigh temperature resistant is charged the rear sealing of an amount of injection of liquid (13), formed a superhigh temperature and charged the sap cavity body.Companion flange (10), capillary tube connector (6), stainless steel capillary (7) and pressure, differential pressure transmitter body (8) are welded to connect successively, again and isolation flange (12) assembly welding, then the high temperature on companion flange charges and seals after hole (5) injection low viscosity high temperature charges liquid (9), has formed a common high temperature and has charged the sap cavity body.Two different heatproof cavitys are kept apart by isolation diaphragm (11), realize the pressure transmission.
In Fig. 2, when measuring diaphragm (1) is subject to the ultra-high temperature pressure medium, pressure charges high viscosity high temperature in the sap cavity body by superhigh temperature and charges liquid (13) and be delivered to isolation diaphragm (11), isolation diaphragm (11) passes to the low viscosity high temperature that common high temperature charges in the sap cavity body with pressure and charges liquid (9), be delivered at last pressure, differential pressure transmitter body (8), realized pressure transmission and the measurement of superhigh temperature medium.The heat that the superhigh temperature medium is delivered to measuring diaphragm (1) along with superhigh temperature charge sap cavity body and heat-dissipating cylinder (3) step by step transmission, distribute and weaken, can not charge liquid to common high temperature and impact.The jitty that the while superhigh temperature charges the sap cavity body has improved the speed that pressure transmits, and shortens and measures the response time.
Claims (2)
1. teletransmission pressure, the differential pressure transmitter of a novel measurement superhigh temperature pressure medium charge sap cavity body and common high temperature by superhigh temperature and charge the sap cavity body and form, and it is characterized in that: superhigh temperature charges sap cavity body and common high temperature and charges between the sap cavity body and be provided with isolation diaphragm.
2. teletransmission pressure, the differential pressure transmitter of measurement superhigh temperature pressure medium according to claim 1, it is characterized in that: superhigh temperature charges the high viscosity high temperature that injects superhigh temperature resistant in the sap cavity body and charges liquid, and common high temperature charges the interior low viscosity high temperature that injects of sap cavity body and charges liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288877.1A CN103017974B (en) | 2011-09-26 | 2011-09-26 | Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288877.1A CN103017974B (en) | 2011-09-26 | 2011-09-26 | Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium |
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| CN103017974A true CN103017974A (en) | 2013-04-03 |
| CN103017974B CN103017974B (en) | 2015-03-25 |
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| CN201110288877.1A Active CN103017974B (en) | 2011-09-26 | 2011-09-26 | Novel transmissible pressure and differential pressure transmitter for measuring pressure of ultrahigh temperature medium |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021325A (en) * | 2015-07-02 | 2015-11-04 | 上海自动化仪表有限公司 | Capacitive pressure sensor |
| CN105671394A (en) * | 2016-01-22 | 2016-06-15 | 上海洛丁森工业自动化设备有限公司 | Gallium liquid metal material and application of gallium liquid metal material to teletransmission pressure and different pressure transmitter |
| CN105806549A (en) * | 2014-12-31 | 2016-07-27 | 美钻石油钻采***(上海)有限公司 | Pressure detection device |
| CN107131997A (en) * | 2017-06-23 | 2017-09-05 | 云南科威液态金属谷研发有限公司 | A kind of high-temp pressure sensor |
| CN107505026A (en) * | 2017-08-31 | 2017-12-22 | 安徽禾禾自动化科技有限公司 | A kind of single flange capacitive liquid level transmitter |
| CN107543645A (en) * | 2016-06-29 | 2018-01-05 | 云南科威液态金属谷研发有限公司 | Diaphragm pressure transmitter |
| CN109580082A (en) * | 2018-08-24 | 2019-04-05 | 浙江洛丁森智能科技有限公司 | A kind of the teletransmission component and teletransmission pressure transmitter of the double isolation diaphragms of band |
| CN109632177A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Superhigh temperature pressure transmitter |
| CN109632180A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Isolating device for superhigh temperature pressure transmitter |
| CN114235271A (en) * | 2021-11-12 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for detecting dew point of differential pressure sensor, storage medium and equipment |
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| DE2910269A1 (en) * | 1979-03-15 | 1980-10-23 | Siemens Ag | Temp. gradient compensation of differential pressure transducer - forms parts of one chamber in different temperature regions |
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| US20090108382A1 (en) * | 2005-05-03 | 2009-04-30 | Odd Harald Steen Eriksen | Transducer for use in harsh environments |
| CN201259455Y (en) * | 2008-10-07 | 2009-06-17 | 刘大伟 | Remote transmitting pressure, pressure difference transducer having temperature compensation corrugated pipe |
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| DE2910269A1 (en) * | 1979-03-15 | 1980-10-23 | Siemens Ag | Temp. gradient compensation of differential pressure transducer - forms parts of one chamber in different temperature regions |
| CN1162991A (en) * | 1994-08-22 | 1997-10-22 | 福克斯保罗公司 | Differential pressure transmitter |
| JP2001074578A (en) * | 1999-09-02 | 2001-03-23 | Fuji Electric Co Ltd | Temperature characteristic regulating method for differential pressure measuring device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806549A (en) * | 2014-12-31 | 2016-07-27 | 美钻石油钻采***(上海)有限公司 | Pressure detection device |
| CN105021325A (en) * | 2015-07-02 | 2015-11-04 | 上海自动化仪表有限公司 | Capacitive pressure sensor |
| CN105021325B (en) * | 2015-07-02 | 2017-11-14 | 上海自动化仪表有限公司 | Capacitance pressure transducer, |
| CN105671394A (en) * | 2016-01-22 | 2016-06-15 | 上海洛丁森工业自动化设备有限公司 | Gallium liquid metal material and application of gallium liquid metal material to teletransmission pressure and different pressure transmitter |
| CN107543645A (en) * | 2016-06-29 | 2018-01-05 | 云南科威液态金属谷研发有限公司 | Diaphragm pressure transmitter |
| CN107131997A (en) * | 2017-06-23 | 2017-09-05 | 云南科威液态金属谷研发有限公司 | A kind of high-temp pressure sensor |
| CN107505026A (en) * | 2017-08-31 | 2017-12-22 | 安徽禾禾自动化科技有限公司 | A kind of single flange capacitive liquid level transmitter |
| CN109580082A (en) * | 2018-08-24 | 2019-04-05 | 浙江洛丁森智能科技有限公司 | A kind of the teletransmission component and teletransmission pressure transmitter of the double isolation diaphragms of band |
| CN109632177A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Superhigh temperature pressure transmitter |
| CN109632180A (en) * | 2019-01-07 | 2019-04-16 | 上海自动化仪表有限公司 | Isolating device for superhigh temperature pressure transmitter |
| CN114235271A (en) * | 2021-11-12 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for detecting dew point of differential pressure sensor, storage medium and equipment |
| CN114235271B (en) * | 2021-11-12 | 2024-01-12 | 潍柴动力股份有限公司 | Dew point detection method and device for differential pressure sensor, storage medium and equipment |
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|---|---|
| CN103017974B (en) | 2015-03-25 |
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