CN206818355U - A kind of pressure sensor with pressure relief device - Google Patents
A kind of pressure sensor with pressure relief device Download PDFInfo
- Publication number
- CN206818355U CN206818355U CN201720675910.9U CN201720675910U CN206818355U CN 206818355 U CN206818355 U CN 206818355U CN 201720675910 U CN201720675910 U CN 201720675910U CN 206818355 U CN206818355 U CN 206818355U
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- China
- Prior art keywords
- pressure
- sensor
- relief device
- releasing chamber
- diaphragm
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Abstract
The utility model discloses a kind of pressure sensor with pressure relief device, including matrix, sensor cavity is provided with described matrix, presser sensor diaphragm and isolation diaphragm are provided with the sensor cavity body, silicone oil is filled between the presser sensor diaphragm and isolation diaphragm, it is characterised in that：Pressure-releasing chamber is additionally provided with described matrix, described pressure-releasing chamber one end is in communication with the outside by end cap seal, the other end by pressure release runner, and valve element and back-moving spring are provided with the pressure-releasing chamber；The utility model can carry out pressure release in hypertonia by pressure-releasing chamber, ensure that the pressure that isolation diaphragm is subject to is consistently lower than pressure release threshold value, so as to realize effective protection to pressure sensor.
Description
Technical field
Sensor technical field is the utility model is related to, a kind of specific pressure sensor with pressure relief device.
Background technology
The oil-filled type pressure sensor of traditional isolation diaphragm has sensor isolation diaphragm, medium silicone oil, chamber, presser sensor
Diaphragm and sensor base are formed, and pressure is acted on sensor isolation diaphragm, conduct institute's measuring pressure to pressure by medium silicone oil
Power sensitive diaphragm, sensitive diaphragm Displacement-deformation produce the signal corresponding with institute measuring pressure.Due to normal single-chamber body barrier film
The oil-filled type pressure sensor of piece, in general overload capacity is 5-10 times of sensor full scale, therefore is sensed when range is smaller
The overload capacity of device is weaker, is easily damaged；And basic device of the sensor as Automated condtrol, it is once damaged
The bad normal work that will influence whole system, therefore the reliability of sensor is to maintain the premise of automated system normal work
Condition.
Publication No. CN203323954U Chinese utility model patent discloses band overvoltage protection on December 4th, 2013
The pressure sensor of device, including matrix, sensor cavity is provided with matrix, pressure sensitive film is provided with sensor cavity body
Piece, silicone oil is provided with sensor cavity body；Isolation diaphragm is provided with below pedestal；Overvoltage protection dress is additionally provided with pedestal
Put；Over-pressure safety device includes the pressurize chamber being connected with sensor cavity, passes through transition between pressurize chamber and sensor cavity
Cavity is connected；Pressurize intracavitary is provided with piston, and the piston rod on piston is located in transitional cavity；The cross-sectional area of piston rod is small
In the cross-sectional area of piston；Pressurize intracavitary is provided with gases at high pressure, and the pressure of gases at high pressure is the 2 of the full-scale pressure of sensor
More than times.Pressure sensor of the present utility model with over-pressure safety device, having can realize to pressure sensor sensitive membrane
The safeguard protection of piece, prevent cell overload from damaging and the advantages that be simple to manufacture, reduce the cost of manufacture of sensor.
The content of the invention
For the defects of pressure sensor safeguard measure deficiency, the utility model discloses one kind present in prior art
Pressure sensor with pressure relief device, the utility model can start pressure release dress after pressure value exceedes the threshold values of setting
Put, realize the quick reduction of pressure, so as to protect the safety of pressure sensor.
The utility model is achieved through the following technical solutions above-mentioned purpose：
A kind of pressure sensor with pressure relief device, including matrix, sensor cavity is provided with described matrix, it is described
Presser sensor diaphragm and isolation diaphragm are provided with sensor cavity body, is filled between the presser sensor diaphragm and isolation diaphragm
Silicone oil, it is characterised in that：Pressure-releasing chamber is additionally provided with described matrix, described pressure-releasing chamber one end is led to by end cap seal, the other end
Cross pressure release runner to be in communication with the outside, valve element and back-moving spring are provided with the pressure-releasing chamber.
Adjusting rod is provided with by threads turn on the end cap
Gag lever post is provided with the adjusting rod and valve element.
Baffle plate is provided with the adjusting rod, the relative one side of the baffle plate and valve element is provided with stopper slot.
Outage is provided with the end cap, the outage is sealed by plug.
The diameter of the pressure-releasing chamber is 2-4 times of pressure release flow diameter.
Screwed connection has end cover on the sensor cavity.
Compared with prior art, the utility model has the advantages that：
1st, pressure-releasing chamber is provided with matrix of the present utility model, valve element and back-moving spring are provided with pressure-releasing chamber, pressure passes
Sensor measure the pressure of fluid when, detected fluid by pressure release runner acts on valve element simultaneously, when the pressure of detected fluid
When smaller, pressure relief device is closed, pressure sensor normal work, and can then be promoted to remote when the pressure of detected fluid is excessive
The direction motion of pressure release runner, so as to which pressure-releasing chamber and pressure release flow passage, the larger detected fluid of pressure is larger into space
Pressure-releasing chamber, so as to reduce the pressure that isolation diaphragm receives, ensure the safety of presser sensor diaphragm；The utility model passes through pressure release
Mode have adjusted the pressure size for acting on pressure sensor, avoid destruction of the high pressure values to sensor, have preferable
Protecting effect.
2nd, adjusting rod is provided with end cap of the present utility model, convenient use person adjusts the precompression of back-moving spring, so as to
The regulation to valve element Opening pressure threshold value is realized, improves protecting effect of the pressure relief device to pressure sensor.
3rd, baffle plate is provided with adjusting rod of the present utility model, gag lever post and spacing is provided with the adjusting rod and valve element
Groove, it is spacing to back-moving spring progress by gag lever post and stopper slot, avoid it from sliding, so as to ensure the unlatching threshold value of valve element
Stabilization, it is ensured that under correct pressure value open valve element realize pressure release, both improved the measurement accuracy of pressure sensor or carried
The high protecting effect to pressure sensor.
4th, outage is provided with end cap of the present utility model, the outage is sealed by plug, and convenient use person exists
It is excluded in time after pressure-releasing chamber is hydraulically full, ensures the pressure release effect of pressure sensor, pressure sensor is obtained weight
It is multiple to use, extend its service life.
5th, 2-4 times of a diameter of pressure release flow diameter of pressure-releasing chamber of the present utility model, the pressure release effect of pressure-releasing chamber is ensured,
So as to improve the protecting effect to presser sensor diaphragm.
6th, end cover has been connected through a screw thread in sensor cavity body of the present utility model, convenient installation or replacing pressure are quick
Feel diaphragm, while the maintenance difficulties of pressure sensor can also be reduced, improve the recycling rate of waterused of matrix.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Reference：1st, matrix, 2, sensor cavity, 3, presser sensor diaphragm, 4, isolation diaphragm, 5, silicone oil, 6, pressure release
Chamber, 7, end cap, 8, pressure release runner, 9, valve element, 10, back-moving spring, 11, adjusting rod, 12, gag lever post, 13, baffle plate, 14, spacing
Groove, 15, outage, 16, plug, 17, end cover.
Specific implementation
The utility model will be described further by specific embodiment below：
Embodiment 1
The present embodiment is as most preferred embodiment of the present utility model, and it discloses a kind of pressure sensing with protection device
Device, as shown in figure 1, including matrix 1, sensor cavity 1 is provided with described matrix 1, one end of the sensor cavity 2 passes through
End cover 17 is threaded with, the other end is sealed by isolation diaphragm 4, and presser sensor is installed with sensor cavity 2
Diaphragm 3, silicone oil 5 is filled between presser sensor diaphragm 3 and isolation diaphragm 4；Pressure-releasing chamber 6 is additionally provided with described matrix 1, it is described
One end of pressure-releasing chamber 6 is sealed by end cap 7, and adjusting rod 11 is provided with by threads turn on end cap 7, and adjusting rod 11, which is inserted into, to be let out
Press in chamber 6；The other end of the pressure-releasing chamber 6 is in communication with the outside by pressure release runner 8, the junction of pressure-releasing chamber 6 and pressure release runner 8
Blocked by valve element 9, back-moving spring 10 is additionally provided between the valve element 9 and adjusting rod 11.
Gag lever post 12 is provided with the adjusting rod 11 and valve element 9, the both ends of back-moving spring 10 are nested with spacing respectively
On bar 12
Baffle plate 13 is provided with the adjusting rod 11, the relative one side of the baffle plate 13 and valve element 9 is provided with stopper slot 14,
Back-moving spring 10 is caught in stopper slot 14
Outage 15 is provided with the end cap 7, the outage 15 is sealed by plug 16.
The diameter of the pressure-releasing chamber 6 is 2 times of the diameter of pressure release runner 8.
Embodiment 2
The diameter of pressure-releasing chamber 6 described in the present embodiment is 4 times of the diameter of pressure release runner 8.
Operation principle of the present utility model：In the course of the work, fluid to be measured enters pressure release stream to pressure sensor simultaneously
Apply thrust in road and to valve element, when the pressure of fluid to be measured is less than pressure release threshold value, valve element is not turned on, the pressure of fluid to be measured
Isolation diaphragm is acted on, isolation diaphragm realizes pressure transmission to presser sensor diaphragm by silicone oil the normal measurement to pressure；
When the pressure of fluid to be measured exceedes pressure release threshold value, valve element is opened in the presence of thrust, and pressure release runner connects with pressure-releasing chamber, by
It is more than the diameter of pressure release runner in the diameter of pressure-releasing chamber, so that the high pressure of fluid to be measured is released, the fluid to be measured of high pressure
Enter in pressure-releasing chamber, so as to ensure that the pressure value that isolation diaphragm is subject to is consistently less than or equal to pressure release threshold value, guarantee pressure biography
The safety of sensor.
Claims (7)
1. a kind of pressure sensor with pressure relief device, including matrix（1）, described matrix（1）On be provided with sensor cavity
（2）, the sensor cavity（2）Inside it is provided with presser sensor diaphragm（3）And isolation diaphragm（4）, the presser sensor diaphragm（3）
And isolation diaphragm（4）Between be filled with silicone oil（5）, it is characterised in that：Described matrix（1）On be additionally provided with pressure-releasing chamber（6）, it is described
Pressure-releasing chamber（6）One end passes through end cap（7）Sealing, the other end pass through pressure release runner（8）It is in communication with the outside, the pressure-releasing chamber（6）It is interior
It is provided with valve element（9）And back-moving spring（10）.
A kind of 2. pressure sensor with pressure relief device according to claim 1, it is characterised in that：The end cap（7）
It is upper that adjusting rod is provided with by threads turn（11）.
A kind of 3. pressure sensor with pressure relief device according to claim 2, it is characterised in that：The adjusting rod
（11）And valve element（9）On be provided with gag lever post（12）.
A kind of 4. pressure sensor with pressure relief device according to claim 2, it is characterised in that：The adjusting rod
（11）On be provided with baffle plate（13）, the baffle plate（13）And valve element（9）Relative one side is provided with stopper slot（14）.
A kind of 5. pressure sensor with pressure relief device according to claim 1, it is characterised in that：The end cap（7）
On be provided with outage（15）, the outage（15）Pass through plug（16）Sealing.
A kind of 6. pressure sensor with pressure relief device according to claim 1, it is characterised in that：The pressure-releasing chamber
（6）Diameter be pressure release runner（8）2-4 times of diameter.
A kind of 7. pressure sensor with pressure relief device according to claim 1, it is characterised in that：The sensor cavity
Body（2）Upper screwed connection has end cover（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720675910.9U CN206818355U (en) | 2017-06-12 | 2017-06-12 | A kind of pressure sensor with pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720675910.9U CN206818355U (en) | 2017-06-12 | 2017-06-12 | A kind of pressure sensor with pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206818355U true CN206818355U (en) | 2017-12-29 |
Family
ID=60759411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720675910.9U Expired - Fee Related CN206818355U (en) | 2017-06-12 | 2017-06-12 | A kind of pressure sensor with pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206818355U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060238A (en) * | 2018-08-13 | 2018-12-21 | 吴江梅塞尔工业气体有限公司 | A kind of vacuum meter overpressure protection apparatus |
| CN111141447A (en) * | 2020-01-13 | 2020-05-12 | 合肥工业大学 | Anti high absolute formula resonance micro-pressure sensor that transships |
| CN111664964A (en) * | 2020-06-11 | 2020-09-15 | 武汉飞恩微电子有限公司 | Gas temperature and pressure integrated sensor |
| CN114878036A (en) * | 2022-01-25 | 2022-08-09 | 许先洪 | Intelligent pressure sensor with automatic pressure relief function |
| CN116337293A (en) * | 2023-05-30 | 2023-06-27 | 无锡芯感智半导体有限公司 | Diffused silicon piezoresistive pressure sensor module |
-
2017
- 2017-06-12 CN CN201720675910.9U patent/CN206818355U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060238A (en) * | 2018-08-13 | 2018-12-21 | 吴江梅塞尔工业气体有限公司 | A kind of vacuum meter overpressure protection apparatus |
| CN109060238B (en) * | 2018-08-13 | 2024-04-05 | 吴江梅塞尔工业气体有限公司 | Overpressure protection device of vacuum gauge |
| CN111141447A (en) * | 2020-01-13 | 2020-05-12 | 合肥工业大学 | Anti high absolute formula resonance micro-pressure sensor that transships |
| CN111664964A (en) * | 2020-06-11 | 2020-09-15 | 武汉飞恩微电子有限公司 | Gas temperature and pressure integrated sensor |
| CN114878036A (en) * | 2022-01-25 | 2022-08-09 | 许先洪 | Intelligent pressure sensor with automatic pressure relief function |
| CN114878036B (en) * | 2022-01-25 | 2023-11-17 | 广东可银智能装备科技有限公司 | Intelligent pressure sensor with automatic pressure relief function |
| CN116337293A (en) * | 2023-05-30 | 2023-06-27 | 无锡芯感智半导体有限公司 | Diffused silicon piezoresistive pressure sensor module |
| CN116337293B (en) * | 2023-05-30 | 2023-09-01 | 无锡芯感智半导体有限公司 | Diffused silicon piezoresistive pressure sensor module |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20180612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |