CN212301401U - Silicon-resistant electrochemical gas sensor - Google Patents
Silicon-resistant electrochemical gas sensor Download PDFInfo
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- CN212301401U CN212301401U CN202021219186.7U CN202021219186U CN212301401U CN 212301401 U CN212301401 U CN 212301401U CN 202021219186 U CN202021219186 U CN 202021219186U CN 212301401 U CN212301401 U CN 212301401U
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Abstract
The utility model provides a silicon-resistant electrochemical gas sensor, which comprises a shell, a gas-sensitive detection body and a lead pin, wherein the lead pin is arranged at the bottom of the shell, the top of the lead pin is arranged at the lower part in the shell in a penetrating way, the gas-sensitive detection body is arranged at the top of the lead pin through a lead, a support piece is arranged at the upper part of the inner wall of the shell, a waterproof breathable film is arranged at the top of the support piece, a filter cavity is formed at the top of the shell, the side wall of the shell and the waterproof breathable film, and a filter; and the top of the shell is provided with an air inlet communicated with the filter cavity. The silicon-resistant electrochemical gas sensor has the advantages of long service life and simple structure.
Description
Technical Field
The utility model relates to an anti-silicon electrochemical gas sensor.
Background
An Electrochemical gas sensor (Electrochemical gas sensor) is a detector that measures a current by oxidizing or reducing a gas to be measured at an electrode, and obtains a concentration of the gas to be measured. The existing electrochemical gas sensor is easily interfered and even damaged by other gas components or solid particle impurities in the using process, for example, the electrochemical gas sensor for detecting methane gas is easily influenced by silicon in a gas-sensitive detection body in some special using places such as coal mines and the like, the detection effect is reduced and even lost, and the electrochemical gas sensor is commonly called as silicon poisoning. There is currently a lack of effective solutions.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the background technology, the utility model provides an anti-silicon electrochemical gas sensor.
A silicon-resistant electrochemical gas sensor comprises a shell, a gas-sensitive detection body and a lead pin, wherein the lead pin is arranged at the bottom of the shell, the top of the lead pin penetrates through the lower part in the shell, the gas-sensitive detection body is arranged at the top of the lead pin through a lead, a support piece is arranged on the upper part of the inner wall of the shell, a waterproof breathable film is arranged at the top of the support piece, a filter cavity is formed among the top of the shell, the side wall of the shell and the waterproof breathable film, and a filter piece is arranged in the filter; and the top of the shell is provided with an air inlet communicated with the filter cavity.
Based on the above, the waterproof breathable film is a PTFE film.
Based on the above, the supporting piece is an annular piece, and the annular piece and the shell are coaxially arranged on the inner wall of the shell; or the supporting piece is a round piece, the round piece and the shell are coaxially arranged on the inner wall of the shell, and a plurality of air holes communicated with the lower part of the inner side of the shell are uniformly distributed on the round piece.
Based on the above, the filter member is activated carbon.
Based on the above, the top of the shell is provided with an opening, the opening is provided with a top cover, and the air inlet is arranged on the top cover; be provided with the internal thread on the top cap, uncovered department is provided with the external screw thread, the top cap passes through threaded connection and is in the casing top.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses a set up the filter chamber to set up in the filter chamber and filter, filter silicon, in order to improve the life of sensor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic sectional structure diagram of the present invention.
Fig. 2 is a schematic sectional structure diagram of the top cover in a separated state.
In the figure: 1. a housing; 2. a support member; 3. a waterproof breathable film; 4. a filter member; 5. an air inlet; 6. a gas-sensitive detection body; 7. a lead pin is inserted; 8. and a top cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, a silicon-resistant electrochemical gas sensor comprises a housing 1, a gas-sensitive detection body 6, and a lead pin 7, wherein the lead pin 7 is disposed at the bottom of the housing 1, the top of the lead pin 7 is inserted into the lower portion of the housing 1, the gas-sensitive detection body 6 is disposed at the top of the lead pin 7 through a lead, a support member 2 is disposed at the upper portion of the inner wall of the housing 1, a waterproof gas-permeable membrane 3 is disposed at the top of the support member 2, a filter chamber is formed among the top of the housing 1, the side wall of the housing 1 and the waterproof gas-permeable membrane 3, and a; and the top of the shell 1 is provided with an air inlet 5 communicated with the filter cavity.
The gas-sensitive detection body 6 is connected with the detection circuit through a lead pin 7, gas is diffused into the shell 1 through the gas inlet 5, harmful silicon is filtered after the gas is filtered by the filter 4, the gas enters the shell 1 through the waterproof breathable film 3, and the gas is detected by the gas-sensitive detection body 6. Filter 4 and carry out the filtering to silicon, prevent effectively that silicon from to the influence of gas sensitive detection body 6, effectively improved sensor's life. In practice, the waterproof and breathable membrane 3 is a PTFE membrane and the filter element 4 is activated carbon.
In this embodiment, the supporting element 2 is an annular element, and the annular element and the housing 1 are coaxially arranged on the inner wall of the housing 1. In other embodiments, the supporting member 2 is a circular member, the circular member and the housing 1 are coaxially disposed on the inner wall of the housing 1, a plurality of air holes communicated with the lower portion of the inner side of the housing 1 are uniformly distributed on the circular member, after the gas permeates through the waterproof breathable film 3, the gas enters the lower portion of the housing 1 through the air holes, the circular member has stronger support to the waterproof breathable film 3, and the air holes are uniformly distributed, so that the uniform distribution of the gas is facilitated, and the impact on the gas-sensitive detection body 6 is avoided.
Preferably, the top of the housing 1 is provided with an opening, the opening is provided with a top cover 8, and the air inlet 5 is arranged on the top cover 8; be provided with the internal thread on the top cap 8, uncovered department is provided with the external screw thread, top cap 8 through threaded connection in casing 1 top. Top cap 8 can be dismantled with casing 1 and be connected, conveniently changes filtering piece 4.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides an anti electrochemical gas sensor of silicon, includes casing, gas-sensitive detection body, lead wire contact pin, and the lead wire contact pin setting is in the casing bottom, and lower part in the casing is worn to establish at lead wire contact pin top, and the gas-sensitive detection body passes through the wire setting at lead wire contact pin top, its characterized in that: a support piece is arranged at the upper part of the inner wall of the shell, a waterproof breathable film is arranged at the top of the support piece, a filter cavity is formed among the top of the shell, the side wall of the shell and the waterproof breathable film, and a filter piece is arranged in the filter cavity; and the top of the shell is provided with an air inlet communicated with the filter cavity.
2. The silicon-resistant electrochemical gas sensor according to claim 1, wherein: the waterproof breathable film is a PTFE film.
3. The silicon-resistant electrochemical gas sensor according to claim 1, wherein: the supporting piece is an annular piece, and the annular piece and the shell are coaxially arranged on the inner wall of the shell; or the supporting piece is a round piece, the round piece and the shell are coaxially arranged on the inner wall of the shell, and a plurality of air holes communicated with the lower part of the inner side of the shell are uniformly distributed on the round piece.
4. The silicon-resistant electrochemical gas sensor according to claim 1, wherein: the filter element is activated carbon.
5. The silicon-resistant electrochemical gas sensor according to claim 1, wherein: the top of the shell is provided with an opening, a top cover is arranged at the opening, and the air inlet is arranged on the top cover; be provided with the internal thread on the top cap, uncovered department is provided with the external screw thread, the top cap passes through threaded connection and is in the casing top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021219186.7U CN212301401U (en) | 2020-06-28 | 2020-06-28 | Silicon-resistant electrochemical gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021219186.7U CN212301401U (en) | 2020-06-28 | 2020-06-28 | Silicon-resistant electrochemical gas sensor |
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| Publication Number | Publication Date |
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| CN212301401U true CN212301401U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021219186.7U Active CN212301401U (en) | 2020-06-28 | 2020-06-28 | Silicon-resistant electrochemical gas sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964773A (en) * | 2021-03-10 | 2021-06-15 | 西人马联合测控（泉州）科技有限公司 | Oxygen sensor and method for improving stability of oxygen sensor |
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2020
- 2020-06-28 CN CN202021219186.7U patent/CN212301401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964773A (en) * | 2021-03-10 | 2021-06-15 | 西人马联合测控（泉州）科技有限公司 | Oxygen sensor and method for improving stability of oxygen sensor |
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