CN113984272A - Anti-interference oil tank steam pressure sensor - Google Patents
Anti-interference oil tank steam pressure sensor Download PDFInfo
- Publication number
- CN113984272A CN113984272A CN202111209979.XA CN202111209979A CN113984272A CN 113984272 A CN113984272 A CN 113984272A CN 202111209979 A CN202111209979 A CN 202111209979A CN 113984272 A CN113984272 A CN 113984272A
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- Prior art keywords
- pressure sensor
- detection cavity
- shell
- filter
- cavity
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- 238000001514 detection method Methods 0.000 claims abstract description 42
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 18
- 239000002828 fuel tank Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 25
- 239000000758 substrate Substances 0.000 description 16
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0038—Fluidic connecting means being part of the housing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an anti-interference oil tank steam pressure sensor, which comprises a shell, wherein a cover plate is arranged on the shell, a dustproof cap is arranged on the cover plate, vent grooves are uniformly formed in the bottom of the periphery of the dustproof cap, a steam inlet connecting structure is arranged at the bottom of the shell, a detection cavity is formed in the shell, a base plate is arranged in the detection cavity, a pressure sensing chip is arranged on the base plate, the steam inlet connecting structure comprises an air inlet head, a steam inlet channel communicated with the detection cavity is formed in the air inlet head, a separation structure is arranged at the bottom of the air inlet head, a filter cavity is arranged in the flow channel, a steel wire mesh is arranged at the top of the filter cavity, and a filter membrane is arranged below the steel wire mesh, so that the anti-interference oil tank steam pressure sensor has the beneficial effects that: such device simple structure, convenient to use, the calculation pressure in the oil tank that can be accurate, and can filter the oil molecule in the oil tank air, prevent that it from influencing the work of forced induction chip, increase its life.
Description
Technical Field
The invention relates to the field of fuel tank steam pressure induction calculation, in particular to an anti-interference fuel tank steam pressure sensor.
Background
National six-standard regulations currently determine fuel system evaporative emissions to be level LEVII in north america, requiring that the total vehicle evaporative emissions within 24 hours do not exceed 700 mg. The fuel oil evaporation system is one of three main emission sources of the whole vehicle, and the oil vapor permeation emission of the fuel oil evaporation system is a main contribution source of the evaporation emission of the whole vehicle, so that the emission of the motor vehicle in use needs to be effectively controlled, the fuel oil system meets the evaporation emission and simultaneously meets the real-time monitoring of the evaporation system and the fuel oil system by the OBDII vehicle-mounted diagnosis system, and the OBDII is a vehicle-mounted diagnosis system and is used for monitoring the emission control system. When any component related to emissions fails, the OBDII system should monitor that a fault has occurred, store the corresponding fault code in the on-board computer, and illuminate the fault indicator (MIL), so that the vehicle driver can recognize the fault code through a standard diagnostic system. OBDII is achieved primarily by diagnosing pressure changes in the fuel system after vehicle shut-down, so national fuel systems must incorporate a fuel vapor pressure sensor.
In the prior art, when the oil vapor pressure sensor performs pressure detection, air entering the oil vapor pressure sensor carries a large number of oil molecules due to the fact that the air exhausted from the oil tank contains a large number of oil molecules, the service life of the oil vapor pressure sensor is easily affected, and detection accuracy is greatly interfered.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides an anti-interference fuel tank steam pressure sensor to overcome the technical problems in the prior related art.
The technical scheme of the invention is realized as follows:
an anti-interference oil tank steam pressure sensor comprises a shell, wherein a cover plate is arranged on the shell, a dustproof cap is arranged on the cover plate, vent grooves are uniformly formed in the bottom of the periphery of the dustproof cap, a steam inlet connecting structure is arranged at the bottom of the shell, a detection cavity is formed in the shell, the vent grooves are communicated with the detection cavity, a base plate is arranged in the detection cavity, a pressure sensing chip is arranged on the base plate, the steam inlet connecting structure comprises an air inlet head, a steam inlet channel communicated with the detection cavity is formed in the air inlet head, a separation structure is arranged at the bottom of the air inlet head and comprises a connector integrated with the air inlet head, a flow channel communicated with the steam inlet channel is formed in the connector, a filter cavity is formed in the flow channel, a steel wire mesh is arranged at the top of the filter cavity, and a filter membrane is arranged below the steel wire mesh, the inner wall of the filter cavity is provided with an internal thread, the bottom of the connector is provided with a positioning block, the positioning block is provided with a gas port communicated with the filter cavity, and the positioning block is provided with an external thread connector matched with the internal thread.
Furthermore, the rear end of the shell is provided with a plug terminal, and a fixing plate is installed on the plug terminal.
Furthermore, the detection cavity is located the upper positioning lug is symmetrically installed on the substrate, and the detection cavity is located lower supporting pads are symmetrically arranged below the substrate.
Furthermore, a mounting hole is formed in the bottom of the shell, the air inlet head is mounted in the mounting hole, and a sealing gasket is arranged outside the mounting hole.
Furthermore, the upper part of the vent groove is positioned on the cover plate and is provided with a dust filter screen.
Further, the connector is of a conical structure.
The invention provides an anti-interference oil tank steam pressure sensor, which has the following beneficial effects:
(1) through be equipped with the apron on the casing, install the dust cap on the apron, the air channel has evenly been seted up to the periphery bottom of dust cap, the vapor connection structure that admits air is installed to the bottom of casing, seted up in the casing and detected the chamber, the air channel with detect the chamber intercommunication, it installs the base plate to detect the intracavity, install the forced induction chip on the base plate, such device simple structure, high durability and convenient use, can be accurate calculate the pressure in the oil tank, and can filter the oil molecule in the oil tank air, prevent its work that influences the forced induction chip, increase its life.
(2) The rear end of the shell is provided with a plug terminal, and the plug terminal is provided with a fixing plate, so that the plug terminal is convenient to externally connect, install and fix.
(3) The locating convex blocks are symmetrically arranged on the base plate, the locating convex blocks are arranged in the detecting cavity, the lower supporting pads are symmetrically arranged below the base plate, and the locating convex blocks are matched with the lower supporting pads to enable the base plate to be more stably installed and not to be easily loosened.
(4) The mounting hole is formed in the bottom of the shell, the air inlet head is mounted in the mounting hole, and the sealing gasket is arranged outside the mounting hole to increase the sealing performance of the joint of the mounting hole and the air inlet head.
(5) The dust filter screen is arranged on the cover plate above the vent groove, so that the outside air can be effectively filtered, and dust is prevented from entering the detection cavity.
(6) The connector is of a conical structure, so that the sealing performance of the connector is enhanced, and the assembly is more convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of an anti-tamper fuel tank vapor pressure sensor according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a housing in an anti-interference fuel tank vapor pressure sensor according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a separation structure in an anti-interference fuel tank vapor pressure sensor according to an embodiment of the invention;
fig. 4 is a schematic diagram of a connection structure of an air inlet head in an anti-interference fuel tank vapor pressure sensor according to an embodiment of the invention.
In the figure:
1. a housing; 2. a cover plate; 3. a dust cap; 4. a vent channel; 5. a vapor inlet connection; 6. positioning blocks; 7. a detection chamber; 8. a substrate; 9. a pressure sensing chip; 10. an air inlet head; 11. a vapor intake passage; 12. a separation structure; 13. a connector; 14. a flow channel; 15. a filter chamber; 16. steel wire mesh; 17. filtering the membrane; 18. an externally threaded nipple; 19. an internal thread; 20. a gas port; 21. a plug-in terminal; 22. a fixing plate; 23. an upper positioning lug; 24. a lower support pad; 25. a dust filter screen; 26. mounting holes; 27. a gasket is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The invention is further described with reference to the following drawings and detailed description:
the first embodiment is as follows:
referring to fig. 1-4, an anti-interference fuel tank vapor pressure sensor according to an embodiment of the present invention includes a housing 1, a cover plate 2 is disposed on the housing 1, a dust cap 3 is mounted on the cover plate 2, vent grooves 4 are uniformly formed in the bottom of the periphery of the dust cap 3, a vapor intake connecting structure 5 is mounted at the bottom of the housing 1, a detection cavity 7 is formed in the housing 1, the vent grooves 4 are communicated with the detection cavity 7, a substrate 8 is mounted in the detection cavity 7, a pressure sensing chip 9 is mounted on the substrate 8, the vapor intake connecting structure 5 includes an intake head 10, a vapor intake channel 11 communicated with the detection cavity 7 is formed in the intake head 10, a separation structure 12 is disposed at the bottom of the intake head 10, the separation structure 12 includes a connector 13 integrated with the intake head 10, a flow channel 14 communicated with the vapor intake channel 11 is disposed in the intake head 13, be equipped with filter chamber 15 in the runner 14, filter chamber 15's top is equipped with wire net 16, wire net 16 below is equipped with filter membrane 17, internal thread 19 on filter chamber 15's the inner wall, the bottom of connector 13 is equipped with locating piece 6, be equipped with on locating piece 6 with filter chamber 15 communicates's gas port 20, be equipped with on locating piece 6 with internal thread 19 assorted screwed joint 18.
Through the above scheme of the invention, a cover plate 2 is arranged on a shell 1, a dust cap 3 is arranged on the cover plate 2, vent grooves 4 are uniformly arranged at the bottom of the periphery of the dust cap 3, a steam inlet connecting structure 5 is arranged at the bottom of the shell 1, a detection cavity 7 is arranged in the shell 1, the vent grooves 4 are communicated with the detection cavity 7, a substrate 8 is arranged in the detection cavity 7, a pressure sensing chip 9 is arranged on the substrate 8, the steam inlet connecting structure 5 comprises an air inlet head 10, a steam inlet channel 11 communicated with the detection cavity 7 is arranged in the air inlet head 10, a separation structure 12 is arranged at the bottom of the air inlet head 10, the separation structure 12 comprises a connecting head 13 integrated with the air inlet head 10, a flow channel 14 communicated with the steam inlet channel 11 is arranged in the connecting head 13, and a filter cavity 15 is arranged in the flow channel 14, the top of straining chamber 15 is equipped with wire net 16, the wire net 16 below is equipped with filter membrane 17, internal thread 19 on the inner wall of straining chamber 15, the bottom of connector 13 is equipped with locating piece 6, be equipped with on locating piece 6 with the gas port 20 of straining chamber 15 intercommunication, be equipped with on locating piece 6 with 19 assorted external screwed joint 18 of internal thread, the device of this application is when using, and atmospheric pressure in the external world gets into through air channel 4 and detects the chamber 7 in, transmits the top to pressure-sensitive chip 9, and the pressure of oil tank or pipeline passes through the vapour inlet channel 11 in the inlet head 10 and transmits the below to pressure-sensitive chip 9, and pressure-sensitive chip 9 compares two pressure values to calculate the pressure in the oil tank, its accuracy is very high, simultaneously, can at first pass through separation structure 12 from the pressure that inlet head 10 got into, utilizes the effect of filter membrane 17 in straining chamber 15, the oil molecules that contain in with the air filter out, and 16 increase filter membrane 17's of wire net stability simultaneously utilizes 6 cooperation external thread joint 18 of locating piece to fix filter membrane 17, and such device simple structure, convenient to use, pressure in the calculation oil tank that can be accurate, and can filter the oil molecules in the oil tank air, prevent its work that influences forced induction chip 9, increase its life.
Example two:
as shown in fig. 1, a cover plate 2 is arranged on a housing 1, a dust cap 3 is arranged on the cover plate 2, vent grooves 4 are uniformly formed in the bottom of the periphery of the dust cap 3, a vapor inlet connection structure 5 is arranged at the bottom of the housing 1, a detection cavity 7 is formed in the housing 1, the vent grooves 4 are communicated with the detection cavity 7, a substrate 8 is arranged in the detection cavity 7, a pressure sensing chip 9 is arranged on the substrate 8, the vapor inlet connection structure 5 comprises an inlet head 10, a vapor inlet channel 11 communicated with the detection cavity 7 is formed in the inlet head 10, a separation structure 12 is arranged at the bottom of the inlet head 10, the separation structure 12 comprises a connector 13 integrated with the inlet head 10, a flow channel 14 communicated with the vapor inlet channel 11 is formed in the connector 13, and a filter cavity 15 is formed in the flow channel 14, the top of the filtering cavity 15 is provided with a steel wire mesh 16, a filtering membrane 17 is arranged below the steel wire mesh 16, an internal thread 19 is arranged on the inner wall of the filtering cavity 15, the bottom of the connector 13 is provided with a positioning block 6, the positioning block 6 is provided with an air port 20 communicated with the filtering cavity 15, the positioning block 6 is provided with an external thread connector 18 matched with the internal thread 19, the rear end of the shell 1 is provided with an inserting terminal 21, and the inserting terminal 21 is provided with a fixing plate 22 so as to facilitate external connection, installation and fixation;
example three:
as shown in fig. 2, a cover plate 2 is arranged on a housing 1, a dust cap 3 is arranged on the cover plate 2, vent grooves 4 are uniformly formed in the bottom of the periphery of the dust cap 3, a vapor inlet connection structure 5 is arranged at the bottom of the housing 1, a detection cavity 7 is formed in the housing 1, the vent grooves 4 are communicated with the detection cavity 7, a substrate 8 is arranged in the detection cavity 7, a pressure sensing chip 9 is arranged on the substrate 8, the vapor inlet connection structure 5 comprises an inlet head 10, a vapor inlet channel 11 communicated with the detection cavity 7 is formed in the inlet head 10, a separation structure 12 is arranged at the bottom of the inlet head 10, the separation structure 12 comprises a connector 13 integrated with the inlet head 10, a flow channel 14 communicated with the vapor inlet channel 11 is formed in the connector 13, and a filter cavity 15 is formed in the flow channel 14, the top of the filter cavity 15 is provided with a steel wire mesh 16, a filter membrane 17 is arranged below the steel wire mesh 16, an internal thread 19 is arranged on the inner wall of the filter cavity 15, the bottom of the connector 13 is provided with a positioning block 6, the positioning block 6 is provided with an air port 20 communicated with the filter cavity 15, the positioning block 6 is provided with an external thread connector 18 matched with the internal thread 19, upper positioning lugs 23 are symmetrically arranged on the substrate 8 in the detection cavity 7, lower supporting pads 24 are symmetrically arranged below the substrate 8 in the detection cavity 7, and the upper positioning lugs 23 are matched with the lower supporting pads 24, so that the substrate 8 is more stably installed and is not easy to loosen;
example four:
as shown in fig. 4, a cover plate 2 is arranged on a housing 1, a dust cap 3 is arranged on the cover plate 2, vent grooves 4 are uniformly formed in the bottom of the periphery of the dust cap 3, a vapor inlet connection structure 5 is arranged at the bottom of the housing 1, a detection cavity 7 is formed in the housing 1, the vent grooves 4 are communicated with the detection cavity 7, a substrate 8 is arranged in the detection cavity 7, a pressure sensing chip 9 is arranged on the substrate 8, the vapor inlet connection structure 5 comprises an inlet head 10, a vapor inlet channel 11 communicated with the detection cavity 7 is formed in the inlet head 10, a separation structure 12 is arranged at the bottom of the inlet head 10, the separation structure 12 comprises a connector 13 integrated with the inlet head 10, a flow channel 14 communicated with the vapor inlet channel 11 is formed in the connector 13, and a filter cavity 15 is formed in the flow channel 14, the top of straining chamber 15 is equipped with wire net 16, the wire net 16 below is equipped with filter membrane 17, internal thread 19 on the inner wall of straining chamber 15, the bottom of connector 13 is equipped with locating piece 6, be equipped with on locating piece 6 with the gas port 20 of straining chamber 15 intercommunication, be equipped with on locating piece 6 with 19 assorted screwed joint 18 of internal thread, mounting hole 26 has been seted up to 1 bottom of casing, inlet head 10 is installed in the mounting hole 26, the outside of mounting hole 26 is equipped with seal ring 27, increases the leakproofness of mounting hole 26 and inlet head 10 junction.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, when the device is used, the pressure of the outside atmosphere enters the detection cavity 7 through the vent groove 4 and is transmitted to the upper part of the pressure sensing chip 9, the pressure of an oil tank or a pipeline is transmitted to the lower part of the pressure sensing chip 9 through the steam inlet channel 11 in the air inlet head 10, the pressure sensing chip 9 compares two pressure values, so that the pressure in the oil tank is calculated, the accuracy is high, meanwhile, the pressure entering from the air inlet head 10 firstly passes through the separation structure 12 and filters oil molecules contained in the air by utilizing the action of the filter membrane 17 in the filter cavity 15, meanwhile, the steel wire mesh 16 increases the stability of the filter membrane 17, the filter membrane 17 is fixed by utilizing the positioning block 6 to be matched with the external thread joint 18, the device has simple structure and convenient use, the pressure in the oil tank can be accurately calculated, and the oil molecules in the air of the oil tank can be filtered, the work of the pressure sensing chip 9 is prevented from being influenced, and the service life of the pressure sensing chip is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. An anti-interference oil tank steam pressure sensor comprises a shell and is characterized in that a cover plate is arranged on the shell, a dustproof cap is arranged on the cover plate, vent grooves are uniformly formed in the bottom of the periphery of the dustproof cap, a steam inlet connecting structure is arranged at the bottom of the shell, a detection cavity is formed in the shell, the vent grooves are communicated with the detection cavity, a base plate is arranged in the detection cavity, a pressure sensing chip is arranged on the base plate, the steam inlet connecting structure comprises an air inlet head, a steam inlet channel communicated with the detection cavity is formed in the air inlet head, a separation structure is arranged at the bottom of the air inlet head and comprises a connector integrated with the air inlet head, a flow channel communicated with the steam inlet channel is formed in the connector, a filter cavity is formed in the flow channel, and a steel wire mesh is arranged at the top of the filter cavity, the wire net below is equipped with the filter membrane, internal thread on the inner wall of filter chamber, the bottom of connector is equipped with the locating piece, be equipped with on the locating piece with the gas port of filter chamber intercommunication, be equipped with on the locating piece with internal thread assorted screwed joint.
2. The anti-interference fuel tank steam pressure sensor of claim 1, wherein the rear end of the housing is provided with a plug terminal, and a fixing plate is mounted on the plug terminal.
3. The anti-interference fuel tank steam pressure sensor according to claim 1, wherein upper positioning lugs are symmetrically mounted on the base plate in the detection cavity, and lower supporting pads are symmetrically arranged below the base plate in the detection cavity.
4. The anti-interference fuel tank steam pressure sensor according to claim 1, wherein a mounting hole is formed in the bottom of the housing, the inlet head is mounted in the mounting hole, and a sealing gasket is arranged outside the mounting hole.
5. An anti-tamper fuel tank vapor pressure sensor as claimed in claim 1, wherein a dust screen is mounted on the cover plate above the vent slot.
6. The anti-interference fuel tank vapor pressure sensor of claim 1, wherein the connector is of a tapered configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209979.XA CN113984272A (en) | 2021-10-18 | 2021-10-18 | Anti-interference oil tank steam pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111209979.XA CN113984272A (en) | 2021-10-18 | 2021-10-18 | Anti-interference oil tank steam pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113984272A true CN113984272A (en) | 2022-01-28 |
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ID=79739127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111209979.XA Pending CN113984272A (en) | 2021-10-18 | 2021-10-18 | Anti-interference oil tank steam pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113984272A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204042247U (en) * | 2014-07-01 | 2014-12-24 | 格力电器（合肥）有限公司 | Pressure gauge crossover sub and pressure gauge |
| CN205642732U (en) * | 2016-05-18 | 2016-10-12 | 中国航空动力机械研究所 | Built -in filter screen formula pressure calibration crossover sub |
| CN206420611U (en) * | 2016-12-29 | 2017-08-18 | 江苏奥力威传感高科股份有限公司 | A kind of tank pressure sensing device |
| CN206919938U (en) * | 2017-07-28 | 2018-01-23 | 台州联豪自动化设备有限公司 | Pressure gas flow monitor |
| CN207005531U (en) * | 2017-06-27 | 2018-02-13 | 安徽江淮汽车集团股份有限公司 | Pressure test tap |
| CN208568153U (en) * | 2018-08-01 | 2019-03-01 | 娄俊鹏 | A kind of explosion prevention shock absorption pressure gauge |
| CN210346981U (en) * | 2019-10-12 | 2020-04-17 | 广州西森自动化控制设备有限公司 | Pressure transmitter with high-pressure impact resistance |
| CN210625928U (en) * | 2019-11-05 | 2020-05-26 | 无锡华泰分散体有限公司 | Air pressure detection device for styrene-butadiene latex production |
| CN211013358U (en) * | 2019-12-31 | 2020-07-14 | 深圳市宝明发科技有限公司 | Pressure gauge with convertible joint |
| CN211626788U (en) * | 2020-04-09 | 2020-10-02 | 江苏奥力威传感高科股份有限公司 | Oil tank pressure sensor installed on pipeline |
| CN213022089U (en) * | 2020-09-28 | 2021-04-20 | 武汉飞恩微电子有限公司 | Fuel oil steam pressure sensor convenient to disassemble |
-
2021
- 2021-10-18 CN CN202111209979.XA patent/CN113984272A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204042247U (en) * | 2014-07-01 | 2014-12-24 | 格力电器（合肥）有限公司 | Pressure gauge crossover sub and pressure gauge |
| CN205642732U (en) * | 2016-05-18 | 2016-10-12 | 中国航空动力机械研究所 | Built -in filter screen formula pressure calibration crossover sub |
| CN206420611U (en) * | 2016-12-29 | 2017-08-18 | 江苏奥力威传感高科股份有限公司 | A kind of tank pressure sensing device |
| CN207005531U (en) * | 2017-06-27 | 2018-02-13 | 安徽江淮汽车集团股份有限公司 | Pressure test tap |
| CN206919938U (en) * | 2017-07-28 | 2018-01-23 | 台州联豪自动化设备有限公司 | Pressure gas flow monitor |
| CN208568153U (en) * | 2018-08-01 | 2019-03-01 | 娄俊鹏 | A kind of explosion prevention shock absorption pressure gauge |
| CN210346981U (en) * | 2019-10-12 | 2020-04-17 | 广州西森自动化控制设备有限公司 | Pressure transmitter with high-pressure impact resistance |
| CN210625928U (en) * | 2019-11-05 | 2020-05-26 | 无锡华泰分散体有限公司 | Air pressure detection device for styrene-butadiene latex production |
| CN211013358U (en) * | 2019-12-31 | 2020-07-14 | 深圳市宝明发科技有限公司 | Pressure gauge with convertible joint |
| CN211626788U (en) * | 2020-04-09 | 2020-10-02 | 江苏奥力威传感高科股份有限公司 | Oil tank pressure sensor installed on pipeline |
| CN213022089U (en) * | 2020-09-28 | 2021-04-20 | 武汉飞恩微电子有限公司 | Fuel oil steam pressure sensor convenient to disassemble |
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