CN102175385A - Intelligent pressure sensor - Google Patents
Intelligent pressure sensor Download PDFInfo
- Publication number
- CN102175385A CN102175385A CN 201110062068 CN201110062068A CN102175385A CN 102175385 A CN102175385 A CN 102175385A CN 201110062068 CN201110062068 CN 201110062068 CN 201110062068 A CN201110062068 A CN 201110062068A CN 102175385 A CN102175385 A CN 102175385A
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- China
- Prior art keywords
- sensor
- cavity
- sensor holder
- over circuit
- pressure
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Abstract
The invention relates to a pressure sensor, which is characterized in that the sensor is arranged inside a sensor base cavity and fixedly welded therewith; one end of a pressure guide joint is arranged inside one end of the sensor base cavity and fixedly welded with the cavity; a sensor conversion circuit is arranged on a circle of sealant-coated boss inside the other end of the sensor base cavity, and is connected with the sensor via a lead wire; a tube is inserted into the cavity at the other end of a sensor base and is in tight fit with the cavity, resin adhesive is poured into the cavity of the tube to seal off a signal lead wire which is welded with the sensor conversion circuit; and a filter plug is plugged in a through hole arranged on the sensor base. The intelligent pressure sensor has the advantages that: the sealing property and stability of the intelligent pressure sensor are improved and the sensor adapts to the demands of explosion-proof sensor; the sensor base is classified as two types, i.e. high pressure type and low pressure type, based on the difference of high/low pressure structures of the sensor, and the pressure guide joint adopts a manner of 1/2G threaded connection; blockage of the vent holes of the sensor owing to air impurities is prevented, and the communication between the sensor and atmosphere is reached.
Description
Technical field
The present invention relates to a kind of pressure transducer, particularly a kind of intelligent pressure sensor is applicable to the measurement of industry hydrodynamic pressures such as oil, chemical industry, electric power, metallurgy.
Background technology
Pressure transducer is direct and the contacted on-the-spot primary instrument of measured medium, is widely used in the pressure survey and the control of on-the-spot industrial flow of industry such as oil, chemical industry, electric power, metallurgy.Along with the application of digitizing technique on sensor, pressure transducer is brought in constant renewal in and is regenerated, the sensor accuracy that requirement is used is more and more higher and temperature drift is little, repeatability is little, resistance to corrosion is strong, requires the sensor good airproof performance, and the rubber sealing structure can not satisfy field requirement.
Summary of the invention
In view of the problem that prior art exists, the present invention is used to solve pressure transducer and uses the O-ring seal seal aging to cause the problem that measuring media is leaked to be purpose for a long time, and a kind of measurement joint all-welded structure is provided, and the reliability height is anticorrosive, anti-aging; The atmosphere contact and the external world of sensor keep clear, and the dust in can air-isolation; Sensor wiring part seals with resin glue, moistureproof, dustproof intelligent pressure sensor.
The present invention for achieving the above object, the technical scheme of being taked is: a kind of intelligent pressure sensor, comprise sensor change-over circuit, sensor, it is characterized in that: also comprise pipe, resin glue, sensor holder, impulse joint, filter stopper; Described sensor places in the sensor holder cavity fixing with the cavity welding; One end of described impulse joint places in sensor holder cavity one end fixing with the cavity welding; Described sensor change-over circuit places on the circle boss of smearing one deck fluid sealant in the sensor holder cavity other end, and the sensor change-over circuit is connected with sensor by lead; Described pipe inserts in the sensor holder other end cavity and the cavity wringing fit, and described resin glue pours in the tube chamber of pipe and will seal up with the signal conductor that the sensor change-over circuit welds mutually; Described filtration stopper is filled in the through hole that sensor holder is provided with.
The effect that the present invention is useful: through structural change, argon arc welds the measurement structure of hermetically sealed sensor, has improved the sealing and the stability of intelligent pressure sensor; The sensor change-over circuit is potted in the intelligent pressure sensor with resin glue, has improved sensor and sensor change-over circuit sealing, and the requirement of suitable flame proof sensor; Sensor holder is divided into two kinds of high pressure and low pressure according to the high and low pressure textural difference of sensor, and the impulse joint is the 1/2G thread connecting mode; The through hole that has in a side of sensor holder, and place filtration stopper by metal sintering in the hole prevents that air plankton from blocking the sensor air hole, and reaches being communicated with of sensor and atmosphere.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, intelligent pressure sensor comprises sensor change-over circuit 3, sensor 6, also comprises pipe 1, resin glue 2, sensor holder 4, impulse joint 5, filters stopper 7.
One end periphery of sensor holder 4 is provided with screw thread 4-3, and the accent place of the other end of sensor holder 4 is provided with cloudy seam 4-4.Impulse joint 5 two ends are round, and the centre is hexahedron 5-2, and round periphery at one end is provided with the positive seam 5-1 of a circle, are provided with a circle external thread 5-3 on the round periphery of the other end.
At last resin glue 2 is poured in the tube chamber from managing 1 the other end, resin glue 2 with sensor change-over circuit 3 with seal up with signal conductor that sensor change-over circuit 3 welds mutually, and the resin glue 2 that pours into makes sensor change-over circuit 3 and sensor 6 sealings, forms to be fit to the intelligent pressure sensor that flame proof requires.Circuit board 3-1 on the signal conductor outside protruded tube 1 tube chamber can be connected with the amplification change-over circuit by interface.
Claims (3)
1. an intelligent pressure sensor comprises sensor change-over circuit (3), sensor (6), it is characterized in that: also comprise pipe (1), resin glue (2), sensor holder (4), impulse joint (5), filter stopper (7); Described sensor (6) places in sensor holder (4) cavity fixing with the cavity welding; One end of described impulse joint (5) places in sensor holder (4) cavity one end fixing with the cavity welding, described sensor change-over circuit (3) places on the circle boss (4-1) of smearing one deck fluid sealant in sensor holder (4) the cavity other end, and sensor change-over circuit (3) is connected with sensor (6) by lead; Described pipe (1) inserts in sensor holder (4) other end cavity and the cavity wringing fit; Described resin glue (2) pours in the tube chamber of pipe (1) and will seal up with the signal conductor that sensor change-over circuit (3) welds mutually; Described filtration stopper (7) is filled in the through hole (4-2) that sensor holder (4) is provided with.
2. intelligent pressure sensor according to claim 1 is characterized in that: an end periphery of described sensor holder (4) is provided with screw thread (4-3), and the accent place of the other end of sensor holder (4) is provided with cloudy seam (4-4).
3. intelligent pressure sensor according to claim 1, it is characterized in that: described impulse joint (5) two ends are round, the centre is hexahedron (5-2), round periphery at one end is provided with a circle positive seam (5-1), is provided with a circle external thread (5-3) on the round periphery of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110062068 CN102175385A (en) | 2011-03-15 | 2011-03-15 | Intelligent pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110062068 CN102175385A (en) | 2011-03-15 | 2011-03-15 | Intelligent pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102175385A true CN102175385A (en) | 2011-09-07 |
Family
ID=44518594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110062068 Pending CN102175385A (en) | 2011-03-15 | 2011-03-15 | Intelligent pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102175385A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506959A (en) * | 2011-10-18 | 2012-06-20 | 中环天仪股份有限公司 | Sensor assembly |
| CN102980717A (en) * | 2012-11-16 | 2013-03-20 | 江苏科技大学 | Back pressure type mechanical seal structure of pressure sensor without power wire plugging |
| CN103743520A (en) * | 2013-01-30 | 2014-04-23 | 上海洁晟环保科技有限公司 | Pressure sensing device applied to high voltage environment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110219U (en) * | 1992-01-22 | 1992-07-15 | 北京市西城区新开通用试验厂 | Pressure sensor with memory function |
| CN1508525A (en) * | 2002-12-18 | 2004-06-30 | Dbt自动化有限公司 | Pressure sensor for measuring hydraulic pressure |
| CN1648628A (en) * | 2004-01-30 | 2005-08-03 | 丹福斯有限公司 | Pressure transducer and method for producing pressure transducer from senser unit and main parts |
| CN201116891Y (en) * | 2007-08-31 | 2008-09-17 | 上海飞恩微电子有限公司 | Silicon piezoresistance pressure sensor sealing assembly |
| CN101310235A (en) * | 2005-11-17 | 2008-11-19 | 罗斯芒特公司 | Process transmitter with overpressure vent |
-
2011
- 2011-03-15 CN CN 201110062068 patent/CN102175385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2110219U (en) * | 1992-01-22 | 1992-07-15 | 北京市西城区新开通用试验厂 | Pressure sensor with memory function |
| CN1508525A (en) * | 2002-12-18 | 2004-06-30 | Dbt自动化有限公司 | Pressure sensor for measuring hydraulic pressure |
| CN1648628A (en) * | 2004-01-30 | 2005-08-03 | 丹福斯有限公司 | Pressure transducer and method for producing pressure transducer from senser unit and main parts |
| CN101310235A (en) * | 2005-11-17 | 2008-11-19 | 罗斯芒特公司 | Process transmitter with overpressure vent |
| CN201116891Y (en) * | 2007-08-31 | 2008-09-17 | 上海飞恩微电子有限公司 | Silicon piezoresistance pressure sensor sealing assembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506959A (en) * | 2011-10-18 | 2012-06-20 | 中环天仪股份有限公司 | Sensor assembly |
| CN102506959B (en) * | 2011-10-18 | 2013-05-29 | 中环天仪股份有限公司 | Sensor assembly |
| CN102980717A (en) * | 2012-11-16 | 2013-03-20 | 江苏科技大学 | Back pressure type mechanical seal structure of pressure sensor without power wire plugging |
| CN102980717B (en) * | 2012-11-16 | 2014-11-05 | 江苏科技大学 | Back pressure type mechanical seal structure of pressure sensor without power wire plugging |
| CN103743520A (en) * | 2013-01-30 | 2014-04-23 | 上海洁晟环保科技有限公司 | Pressure sensing device applied to high voltage environment |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110907 |