CN111024797B - Tectorial membrane sensor - Google Patents
Tectorial membrane sensor Download PDFInfo
- Publication number
- CN111024797B CN111024797B CN201911196558.0A CN201911196558A CN111024797B CN 111024797 B CN111024797 B CN 111024797B CN 201911196558 A CN201911196558 A CN 201911196558A CN 111024797 B CN111024797 B CN 111024797B
- Authority
- CN
- China
- Prior art keywords
- sensor
- cap
- wall
- head
- film
- 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.)
- Active
Links
- 210000002489 tectorial membrane Anatomy 0.000 title claims description 4
- 239000003792 electrolyte Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 210000003128 head Anatomy 0.000 claims 5
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 239000010408 film Substances 0.000 abstract 3
- 239000013039 cover film Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000005259 measurement Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010364 biochemical engineering Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4166—Systems measuring a particular property of an electrolyte
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A covered sensor comprising: the sensor cap comprises a convex body, a sensor cap and a sensor cover, wherein the sensor cap is fastened on the body, the head of the convex body is sealed in the cap, so that a cavity is formed between the head of the convex body and the inner side of the cap wall of the sensor cap, and a through hole is formed in the cap wall of the sensor cap, which is close to one side of the base of the convex body; a cover film coated on the end face of the sensor cap; one end of the elastic sealing piece is arranged on the outer wall of the head part of the convex body and positioned between the through hole and the covering film, and the other end of the elastic sealing piece is contacted with the inner wall of the sensor cap; the electrolyte is wrapped in a cavity formed by the elastic sealing piece, the inner wall of the sensor cap, the covering film and the outer wall of the head of the convex body; the sensitive element is arranged in the end face of the head of the convex body and is contacted with the covering film; and after the lead is connected with the sensitive element, the lead is led out of the film-covered sensor through the inside of the body.
Description
Technical Field
The invention belongs to the technical field of analytical instruments, and particularly relates to a film-covered sensor.
Background
In the fields of ocean economy, biochemical engineering, environmental protection and the like, chemical components such as dissolved oxygen, hydrogen, ammonia nitrogen content, sulfur dioxide and the like in a water body need to be detected and analyzed, and a film-covered sensor is quite common in detection. In order for the accuracy of such analysis to be ensured, it is necessary to ensure that the pressure between the coating and the sensor element remains constant. Since the coating is a film having a certain strength, the pressure applied to the coating cannot be too great. If the electrolyte pressure in the film covered sensor is too large, the electrolyte can push the film covered, so that the film covered deforms and is separated from the sensor element, and the measurement of the film covered sensor is affected. If the electrolyte pressure in the film covered sensor continues to increase, the electrolyte can break the film covered, causing damage to the film covered sensor.
Disclosure of Invention
The invention provides a tectorial membrane sensor with a self-balancing water pressure function, which consists of a sensor body, an elastic floating piece (or called an elastic sealing piece), electrolyte and a sensor cap. The elastic floating piece is embedded on the sensor body. The end face of the sensor cap is provided with a film, electrolyte is filled in the sensor cap, and the other end of the sensor cap is provided with external threads screwed on the internal threads of the sensor body. The elastic floating piece is made of soft rubber and is used for isolating electrolyte and water solution, and when the water pressure outside the sensor changes, the elastic floating piece can slide on the inner wall of the sensor cap, so that the electrolyte water pressure in the sensor cap is balanced with the water pressure outside the sensor cap.
The sensor with the water pressure balance is free from the change of external water pressure, so that the pressure of the film attached to the sensor element is unchanged. The film-covered sensor is guaranteed to have good measurement stability and reliability.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
fig. 1 is a schematic cross-sectional view of a structure of a film covered sensor according to one embodiment of the present invention.
1-Water body, 2-coating film, 3-sensitive element, 4-electrolyte, 5-sensor cap, 6-elastic sealing sheet, 7-through hole, 8-sensor body, 9-wire and 10-container.
Detailed Description
According to one or more embodiments, a self-balancing hydraulic pressure coated sensor is composed of a sensor body, an elastic floating sheet (elastic sealing sheet), electrolyte and a sensor cap. The sensor cap is provided with a film, and the sensor cap is filled with electrolyte. The sensor body and the sensor cap are screwed together by threads, and after screwing, the coating film has certain pressure on the sensitive element on the sensor body. The elastic float on the sensor body is made of soft (much softer than the coating film) rubber to isolate the electrolyte from the external water solution. When the water pressure of the water body outside the film covered sensor changes, the elastic floating piece can slide up and down on the inner wall of the sensor cap so as to balance the pressure of electrolyte and the external water body, so that the film covered sensor has a certain pressure constant to the sensitive element on the sensor main body, and the film covered sensor has good measurement stability and reliability. The sensor may be selected differently depending on the detection parameters.
As shown in fig. 1, the coating film 2 of the coating film sensor assembly is fixed on a sensor cap 5, the electrolyte 4 is packed in the sensor cap 5, and a through hole 7 is formed in the sensor cap 5. The sensor 3 is fixed to the sensor body 8 and connected to the lead 9. The elastic sealing piece 6 is fixed on the sensor body 8 in a sealing way. The sensor cap 5 is screwed and fixedly connected to the sensor body 8, so that the coating 2 is tightly attached to the end face of the sensitive element 3. When the laminated sensor assembly is placed in a river channel or a container 10, water in the water body 1 flows in or out due to pressure changes at the inner end and the outer end of the through hole 7 on the sensor cap 5, and the elastic sealing piece 6 can slide up and down on the inner wall of the sensor cap 5 so as to balance the pressure of the electrolyte 4 and the external water body 1, so that the pressure of the laminated sensor 2 on the sensitive element 3 cannot change along with the change of the depth of the laminated sensor placed in the water body 1.
It is to be understood that while the spirit and principles of the invention have been described in connection with several embodiments, it is to be understood that this invention is not limited to the specific embodiments disclosed nor does it imply that the features of these aspects are not combinable and that such is for convenience of description only. The invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (3)
1. A film-covered sensor is characterized in that, the film-covered sensor includes:
A body exhibiting a convex shape;
the sensor cap is fastened on the body, the head of the body is sealed in the cap, so that a cavity is formed between the head of the body and the inner side of the cap wall of the sensor cap, and a through hole is formed in the cap wall of the sensor cap, which is close to one side of the base of the body;
a coating film coated on the end face of the sensor cap;
An elastic sealing piece, one end of which is arranged on the outer wall of the head of the body and positioned between the through hole and the covering film, and the other end of which contacts the inner wall of the sensor cap;
Electrolyte, the electrolyte is wrapped in a cavity formed by the elastic sealing piece, the inner wall of the sensor cap, the coating film and the outer wall of the head of the body;
The sensitive element is arranged in the end face of the head of the body and is contacted with the coating film;
And the lead is led out to the outside of the tectorial membrane sensor through the inside of the body after being connected with the sensitive element.
2. The covered sensor of claim 1, wherein the sensor cap is threadably secured to the body.
3. The covered sensor of claim 1, wherein said elastic sealing sheet is made of soft rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911196558.0A CN111024797B (en) | 2019-11-29 | 2019-11-29 | Tectorial membrane sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911196558.0A CN111024797B (en) | 2019-11-29 | 2019-11-29 | Tectorial membrane sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111024797A CN111024797A (en) | 2020-04-17 |
| CN111024797B true CN111024797B (en) | 2024-08-13 |
Family
ID=70207017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911196558.0A Active CN111024797B (en) | 2019-11-29 | 2019-11-29 | Tectorial membrane sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111024797B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211402237U (en) * | 2019-11-29 | 2020-09-01 | 上海仪电科学仪器股份有限公司 | Film-covered sensor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2100732U (en) * | 1991-09-28 | 1992-04-08 | 王禾 | Alarm for lack of oxygen in fish pond |
| DE4232909C2 (en) * | 1992-10-01 | 1997-05-07 | Conducta Endress & Hauser | Head part of an electrochemical sensor |
| CN103852506A (en) * | 2012-11-30 | 2014-06-11 | 上海仪电科学仪器股份有限公司 | Gas sensing electrode with constant pressure film structure |
| CN104634837B (en) * | 2015-02-03 | 2017-10-13 | 北京华科仪科技股份有限公司 | Electrochemical sensor and preparation method thereof |
| FR3032791B1 (en) * | 2015-02-18 | 2018-09-07 | L'essor Francais Electronique | MINIATURE METAL MEMBRANE PRESSURE SENSOR AND METHOD FOR MANUFACTURING THE SAME |
| CN204679198U (en) * | 2015-06-26 | 2015-09-30 | 中国工程物理研究院总体工程研究所 | Easy assembling type sputtered thin film pressure transducer |
| CN110297031A (en) * | 2019-07-22 | 2019-10-01 | 苏州益品德环境科技有限公司 | A kind of dissolved oxygen and the two-in-one sensor of temperature |
-
2019
- 2019-11-29 CN CN201911196558.0A patent/CN111024797B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211402237U (en) * | 2019-11-29 | 2020-09-01 | 上海仪电科学仪器股份有限公司 | Film-covered sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111024797A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105509838A (en) | Throw-in type sensor | |
| CN211402237U (en) | Film-covered sensor | |
| CN111024797B (en) | Tectorial membrane sensor | |
| CN211877068U (en) | Sensor with a sensor element | |
| CN104215382B (en) | The film isolated form gauge pressure transducer of external balance chamber | |
| CN204027754U (en) | The film isolated form gauge pressure transducer of external balance chamber | |
| JP4882369B2 (en) | Air pressure detection system | |
| CN201583379U (en) | Deep sea high pressure sensor packaging structure | |
| JPH11153469A (en) | Immersion type water gauge | |
| CN111238424B (en) | Device and method for detecting deformation quantity | |
| CN208297027U (en) | A kind of osmometer | |
| CN216410455U (en) | Miniature precision pressure sensor | |
| CN100367020C (en) | Pressure balance type seal method and its use | |
| CN209055269U (en) | A kind of chemical industry anti-corrosion pressure gauge | |
| CN102620866A (en) | Digital-type temperature pressure oil-filled core | |
| CN217276598U (en) | High-precision miniature force transducer | |
| CN219810883U (en) | Novel packaging structure of seven-electrode conductivity sensor and sensor | |
| CN111122023A (en) | Soil pressure sensor | |
| CN111811696A (en) | Pressure sensor chip, method for manufacturing same, and pressure sensor | |
| JP3118624B2 (en) | Water level meter for liquids containing hazardous chemical components | |
| CN212340502U (en) | Pressure sensor chip and pressure sensor | |
| CN210322157U (en) | Gas pressure sensor with anti-corrosion function | |
| RU2549254C1 (en) | Barocompensated primary measuring converter with solid-state sensitive element | |
| CN217424532U (en) | Combined weighing sensor | |
| CN208171848U (en) | A kind of sample bottle demarcated in situ for underwater spectral class sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |