CN205228583U - Accurate liquid level measurement probe - Google Patents
Accurate liquid level measurement probe Download PDFInfo
- Publication number
- CN205228583U CN205228583U CN201520948872.0U CN201520948872U CN205228583U CN 205228583 U CN205228583 U CN 205228583U CN 201520948872 U CN201520948872 U CN 201520948872U CN 205228583 U CN205228583 U CN 205228583U
- Authority
- CN
- China
- Prior art keywords
- adaptor
- adapter
- waterproof
- pressure sensor
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses an accurate liquid level measurement probe, including gas receiver and waterproof ventilative adapter. Be provided with waterproof ventilated membrane in the waterproof ventilative adapter, gas receiver lower extreme opening, its upper end is connected with waterproof ventilative adapter lower extreme through the lower part connecting pipe, the upper end of waterproof ventilative adapter is passed through the upper portion connecting pipe and is connected with MEMS pressure sensor's pressure sensing chamber, by the whole route that constitutes geochemical gas survey in lower extreme opening to MEMS pressure sensor's pressure sensing chamber of gas receiver. The utility model discloses the sensing unit that can effectively avoid pressure sensor with surveyed liquid direct contact, when measuring high temperature liquid, steam needs levitate impurity in waterproof ventilative adapter filtering moisture and air before touching the pressure sensor sensing unit moreover, the sensing unit of ensureing pressure sensor does not receive the influence of steam and impurity, guarantees measurement accuracy and stability, makes the utility model discloses can use in various complicacies and rugged environment.
Description
Technical field
The utility model belongs to level gauging field, particularly a kind of probe using MEMS pressure sensor to carry out high-precision liquid level measurement.
Background technology
At present; when carrying out high-precision liquid level and measuring; usually the MEMS(microelectromechanical systems of small size, low-power consumption, high precision and high reliability can be selected) pressure transducer; due to inoxidizability and the corrosion resistance deficiency of existing MEMS sensor; therefore, when measuring high-temp liquid and high temperature corrosion liquid, steam constitutes a serious threat to the measuring accuracy of sensor and serviceable life.In addition, MEMS sensor in use, its housing is exposed in the pressure and temperature environment of constantly change, the temperature variation of surrounding environment, dust, dirt and moisture all can cause damage to the sensitive components of sensor, and not easy to clean and reparation after damage, affect its serviceable life and stability.
Utility model content
Goal of the invention of the present utility model is: for the technical matters of above-mentioned existence, provides a kind of accurate level measurement probe that can use in complexity and rugged surroundings.
The technical solution of the utility model is achieved in that a kind of accurate level measurement probe, it is characterized in that: comprise air drum and waterproof and breathable adapter, waterproof ventilated membrane is provided with in described waterproof and breathable adapter, described air drum lower ending opening, its upper end is connected with waterproof and breathable adapter lower end by lower guide pressure pipe, the upper end of described waterproof and breathable adapter is connected with the pressure-sensitive chamber of MEMS pressure sensor by upper guide pressure pipe, by the lower ending opening of described air drum to the overall path forming gasmetry in pressure-sensitive chamber of MEMS pressure sensor.
Accurate level measurement probe described in the utility model, waterproof and breathable adapter described in it comprises adaptor, lower adaptor and miniature adaptor, described waterproof ventilated membrane is arranged on bottom the thread cavity of lower adaptor, described miniature adaptor is placed in the thread cavity of lower adaptor, above waterproof ventilated membrane, described upper adaptor and lower adaptor are threaded togather, and are provided with O RunddichtringO on described between the lower surface of adaptor and miniature adaptor upper surface.
Accurate level measurement probe described in the utility model, described in it, the upper upper end linkage section of adaptor and the lower end linkage section of lower adaptor are pyramid-like structure, described upper adaptor is connected with the lower end of upper guide pressure pipe by the linkage section of upper end pyramid-like structure, described lower adaptor is connected with the upper end of lower guide pressure pipe by the linkage section of lower end pyramid-like structure, described air drum upper end is pyramid-like structure, and described air drum is connected with the lower end of lower guide pressure pipe by the linkage section of upper end pyramid-like structure.
Accurate level measurement probe described in the utility model, it is provided with suspension rope on described air drum.
The utility model utilizes its inner air of liquid compression entered in air drum, make the pressure of fluid column in air drum by the responsive stress surface of transfer of air to MEMS pressure sensor, thus avoid sensor sensing parts and directly contact with fluid to be measured, and when measuring high-temp liquid, before steam touches sensor sensing parts, impurity that need be floating in waterproof and breathable adapter filtering moisture and air, guarantee that the sensing unit of pressure transducer is not subject to the impact of steam and impurity, ensure measuring accuracy and stability, the utility model is enable to be applicable to various complexity and rugged environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of waterproof and breathable adapter in the utility model.
Mark in figure: 1 is air drum, and 2 is waterproof and breathable adapter, and 2a is upper adaptor, and 2b is lower adaptor, 2c is miniature adaptor, and 3 is lower guide pressure pipe, and 4 is upper guide pressure pipe, and 5 is MEMS pressure sensor, 6 is waterproof ventilated membrane, and 7 is O RunddichtringO, and 8 is suspension rope.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of accurate level measurement probe, comprise air drum 1 and waterproof and breathable adapter 2, waterproof ventilated membrane 6 is provided with in described waterproof and breathable adapter, described air drum 1 lower ending opening, its upper end is connected with waterproof and breathable adapter 2 lower end by lower guide pressure pipe 3, the upper end of described waterproof and breathable adapter 2 is connected with the pressure-sensitive chamber of MEMS pressure sensor 5 by upper guide pressure pipe 4, by the lower ending opening of described air drum 1 to the overall path forming gasmetry in pressure-sensitive chamber of MEMS pressure sensor 5.In use, described air drum should be tried one's best and vertically be put into fluid to be measured, and as far as possible near but not bottom contacting container, the use of described stainless steel air drum, under ensure that the prerequisite directly do not contacted at sensor and fluid to be measured, can in thickness, muddiness and corrosive liquids, the measurement liquid level information of efficiently and accurately.
As shown in Figure 2, described waterproof and breathable adapter 2 comprises adaptor 2a, lower adaptor 2b and miniature adaptor 2c, described waterproof ventilated membrane 6 is arranged on bottom the thread cavity of lower adaptor 2b, described miniature adaptor 2c is placed in the thread cavity of lower adaptor 2b, above waterproof ventilated membrane 6, described miniature adaptor upper surface is provided with the mounting groove installing fluororubber O-type O-ring seal 7, described upper adaptor 2a and lower adaptor 2b is threaded togather, O RunddichtringO 7 is provided with on described between the lower surface of adaptor 2a and miniature adaptor 2c upper surface, and the lower surface of upper adaptor just with the crush seal of fluororubber O-type O-ring seal, being threaded, part can increase raw material band to improve seal with screwed joint.
Wherein, the upper end linkage section of described upper adaptor 2a and the lower end linkage section of lower adaptor 2b are pyramid-like structure, described upper adaptor 2a is connected with the lower end of upper guide pressure pipe 4 by the linkage section of upper end pyramid-like structure, described lower adaptor 2b is connected with the upper end of lower guide pressure pipe 3 by the linkage section of lower end pyramid-like structure, described air drum 1 upper end is pyramid-like structure, and described air drum 1 is connected with the lower end of lower guide pressure pipe 3 by the linkage section of upper end pyramid-like structure.
In addition, described air drum 1 is provided with suspension rope 8, described suspension rope 8 is connected with axle center place, air drum 1 upper surface, avoids the connecting portion between each parts to affect overall impermeability because of stressed.
Number of assembling steps of the present utility model is:
The first step: install waterproof ventilated membrane bottom the thread cavity of lower adaptor after, miniature adaptor is placed on waterproof ventilated membrane, again fluororubber O-type O-ring seal is arranged in the mounting groove of miniature adaptor upper surface setting, upper adaptor is screwed onto in lower adaptor, and the lower surface of upper adaptor just with the crush seal of fluororubber O-type O-ring seal, be assembled into waterproof and breathable adapter.
Second step: dock lower guide pressure pipe and upper guide pressure pipe respectively at the pagoda-shaped linkage section at waterproof and breathable adapter two ends, wherein the length of upper guide pressure pipe is as far as possible short under the prerequisite that guarantee is easy to operate, and the length of lower guide pressure pipe is determined according to the general liquid level of actual fluid to be measured.
3rd step: connect air drum in the lower end of lower guide pressure pipe, the upper end of upper guide pressure pipe connects the pressure-sensitive chamber of MEMS pressure sensor.
Principle of work of the present utility model: after the stainless steel air drum of measuring sonde is put into fluid to be measured, liquid enters air drum and compresses its inner air, the pressure of fluid column passes through air successively through air drum, lower guide pressure pipe, waterproof and breathable adapter, upper guide pressure pipe is delivered to the responsive stress surface in MEMS pressure sensor, the sensing unit avoiding pressure transducer directly contacts with fluid to be measured, in addition, when measuring high-temp liquid, before steam touches pressure transducer sensing unit, impurity that need be floating in waterproof and breathable adapter filtering moisture and air, guarantee that the sensing unit of pressure transducer is not subject to the impact of steam and impurity, ensure measuring accuracy and stability, the utility model is enable to be applicable to as high temperature, high temperature corrosion liquid, temperature variation is large, dust is serious, the environment for use that humidity is high and high viscosity, muddy, the media environments such as strongly corrosion liquid.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. an accurate level measurement probe, it is characterized in that: comprise air drum (1) and waterproof and breathable adapter (2), waterproof ventilated membrane (6) is provided with in described waterproof and breathable adapter (2), described air drum (1) lower ending opening, its upper end is connected with waterproof and breathable adapter (2) lower end by lower guide pressure pipe (3), the upper end of described waterproof and breathable adapter (2) is connected with the pressure-sensitive chamber of MEMS pressure sensor (5) by upper guide pressure pipe (4), the path of gasmetry is formed by lower ending opening to the pressure-sensitive chamber entirety of MEMS pressure sensor (5) of described air drum (1).
2. accurate level measurement probe according to claim 1, it is characterized in that: described waterproof and breathable adapter (2) comprises adaptor (2a), lower adaptor (2b) and miniature adaptor (2c), described waterproof ventilated membrane (6) is arranged on bottom the thread cavity of lower adaptor (2b), described miniature adaptor (2c) is placed in the thread cavity of lower adaptor (2b), waterproof ventilated membrane (6) top, described upper adaptor (2a) and lower adaptor (2b) are threaded togather, O RunddichtringO (7) is provided with on described between the lower surface of adaptor (2a) and miniature adaptor (2c) upper surface.
3. accurate level measurement probe according to claim 2, it is characterized in that: the upper end linkage section of described upper adaptor (2a) and the lower end linkage section of lower adaptor (2b) are pyramid-like structure, described upper adaptor (2a) is connected with the lower end of upper guide pressure pipe (4) by the linkage section of upper end pyramid-like structure, described lower adaptor (2b) is connected with the upper end of lower guide pressure pipe (3) by the linkage section of lower end pyramid-like structure, described air drum (1) upper end is pyramid-like structure, described air drum (1) is connected with the lower end of lower guide pressure pipe (3) by the linkage section of upper end pyramid-like structure.
4. accurate level measurement probe according to claim 1, is characterized in that: on described air drum (1), be provided with suspension rope (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520948872.0U CN205228583U (en) | 2015-11-25 | 2015-11-25 | Accurate liquid level measurement probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520948872.0U CN205228583U (en) | 2015-11-25 | 2015-11-25 | Accurate liquid level measurement probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228583U true CN205228583U (en) | 2016-05-11 |
Family
ID=55903640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520948872.0U Expired - Fee Related CN205228583U (en) | 2015-11-25 | 2015-11-25 | Accurate liquid level measurement probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205228583U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907253A (en) * | 2017-11-30 | 2018-04-13 | 天津航空机电有限公司 | A kind of small range silicon piezoresistive transducer anti-corrosion structure design |
| CN108072408A (en) * | 2018-01-22 | 2018-05-25 | 深圳市宏电技术股份有限公司 | A kind of undersea detection device |
| CN117388444A (en) * | 2023-12-08 | 2024-01-12 | 陕西省环境调查评估中心 | Air detector |
-
2015
- 2015-11-25 CN CN201520948872.0U patent/CN205228583U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907253A (en) * | 2017-11-30 | 2018-04-13 | 天津航空机电有限公司 | A kind of small range silicon piezoresistive transducer anti-corrosion structure design |
| CN108072408A (en) * | 2018-01-22 | 2018-05-25 | 深圳市宏电技术股份有限公司 | A kind of undersea detection device |
| CN108072408B (en) * | 2018-01-22 | 2024-08-06 | 深圳市宏电技术股份有限公司 | Underwater detection device |
| CN117388444A (en) * | 2023-12-08 | 2024-01-12 | 陕西省环境调查评估中心 | Air detector |
| CN117388444B (en) * | 2023-12-08 | 2024-03-01 | 陕西省环境调查评估中心 | Air detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205228583U (en) | Accurate liquid level measurement probe | |
| CN204944683U (en) | A kind of sensor guard cover | |
| CN103336320A (en) | Intelligent alarm rain gauge | |
| CN106461488B (en) | Press element | |
| CN110542510A (en) | Fiber grating pore water pressure sensor | |
| CN211978201U (en) | Pressure transmitter for medical equipment | |
| CN109445362A (en) | A kind of five-hole probe measuring system of integrated nominal data | |
| CN112798172A (en) | Multifunctional sensor | |
| CN205138942U (en) | Liquid density on - line measuring device | |
| CN210513509U (en) | Fiber grating pore water pressure sensor | |
| CN104316227A (en) | Double-faced pressure sensing type soil pressure sensor | |
| CN203572987U (en) | Intelligent alarm pluviometer | |
| CN204007980U (en) | A kind of shrapnel contact pressure unit | |
| KR101483755B1 (en) | An apparatus for measuring gas pressure and temperature in gas pipe | |
| CN206399564U (en) | A kind of wireless pressure sensor | |
| CN201060079Y (en) | Intelligent differential pressure cell | |
| CN212158908U (en) | Fluid pressure measuring device and liquid level measuring instrument | |
| CN102288371A (en) | Air leakage detector | |
| CN107389260A (en) | A kind of high multifunction soil sensor of precision | |
| CN101832825A (en) | Industrial digital display thermometer | |
| CN202101805U (en) | Straight-through type fluid pressure gauge | |
| CN209028456U (en) | A kind of five-hole probe measuring system of integrated nominal data | |
| CN110726492A (en) | Fiber grating sensing and monitoring system for measuring temperature and vibration of train bearing | |
| CN204085771U (en) | Pressure unit | |
| CN204924539U (en) | High -temperature melt digital display manometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20201125 |