CN210221892U - Electrochemical oxygen sensor - Google Patents
Electrochemical oxygen sensor Download PDFInfo
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- CN210221892U CN210221892U CN201921134320.0U CN201921134320U CN210221892U CN 210221892 U CN210221892 U CN 210221892U CN 201921134320 U CN201921134320 U CN 201921134320U CN 210221892 U CN210221892 U CN 210221892U
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Abstract
The utility model provides an electrochemical oxygen sensor, which comprises a shell, a lead pin, a lead block and a catalytic electrode, wherein the lead pin is arranged at the bottom of the shell, the lead block is arranged in the shell, and electrolyte is adsorbed on the lead block; an air inlet is formed in the top of the shell, a first breathable film is arranged on the inner wall of the shell corresponding to the air inlet, a pressure relief hole is formed in the bottom of the shell, and a second breathable film is arranged on the inner wall of the shell corresponding to the pressure relief hole; the catalysis electrode sets up in the bottom of first ventilated membrane, and the catalysis electrode is connected to the one end of first electrode lead wire, and the other end of first electrode lead wire is worn out the casing bottom and a lead pin of electric connection, is provided with the diaphragm paper between first electrode lead wire and the lead block and between catalysis electrode and the lead block, and the one end setting of second electrode lead wire is just set up in the lead block top and is in the diaphragm paper bottom, and the other end of second electrode lead wire is worn out the casing bottom and another lead pin of electric connection. The electrochemical oxygen sensor has the advantages of adjustable pressure and safe use.
Description
Technical Field
The utility model relates to an electrochemistry oxygen sensor.
Background
The oxygen sensor is a device for detecting the oxygen content, and is especially important for monitoring the oxygen content in some specific places such as coal mines and the like with poor air circulation. When the existing electrochemical oxygen sensor is produced and packaged, the internal pressure of the sensor can be increased at the moment of sealing, and the internal pressure of the sensor can be increased due to the change of temperature in the using process; because the air inlet hole size is very little, internal pressure increase can lead to electrolyte to block up and even ooze the air inlet hole, causes the air inlet hole can't admit air and make the sensor inefficacy.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the background technology, the utility model provides an electrochemical oxygen sensor.
An electrochemical oxygen sensor comprises a shell, a lead pin, a lead block and a catalytic electrode, wherein the lead pin is arranged at the bottom of the shell, the lead block is arranged in the shell, and electrolyte is adsorbed on the lead block; an air inlet is formed in the top of the shell, a first breathable film is arranged on the inner wall of the shell corresponding to the air inlet, a pressure relief hole is formed in the bottom of the shell, and a second breathable film is arranged on the inner wall of the shell corresponding to the pressure relief hole; the catalytic electrode is arranged at the bottom of the first breathable film, one end of a first electrode lead is connected with the catalytic electrode, the other end of the first electrode lead penetrates out of the bottom of the shell and is electrically connected with a lead pin, diaphragm paper is arranged between the first electrode lead and the lead block and between the catalytic electrode and the lead block, one end of a second electrode lead is arranged at the top of the lead block and is arranged at the bottom of the diaphragm paper, and the other end of the second electrode lead penetrates out of the bottom of the shell and is electrically connected with another lead pin.
Based on the above, two layers of the first breathable film are arranged at the air inlet.
Based on the above, the first and second gas permeable membranes are PTFE membranes, respectively.
Based on the above, the material of the catalytic electrode is at least one of carbon or platinum.
Based on the above, the first electrode lead and the second electrode lead are respectively nickel wires.
The utility model discloses relative prior art has substantive characteristics and progress, specific theory, the utility model discloses set up the pressure release hole bottom the casing, the pressure release hole plays the additional action to the inlet port, effectively reduces the influence of internal pressure change to the inlet port, plays the regulating action to sensor internal pressure.
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 structural diagram of the present invention.
In the figure: 1. a housing; 2. lead blocks; 3. a catalytic electrode; 4. a lead pin is inserted; 5. an air inlet; 6. a first breathable film; 7. a pressure relief vent; 8. a second breathable film; 9. a first electrode lead; 10. a second electrode lead; 11. a separator paper.
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, an electrochemical oxygen sensor comprises a housing 1, a lead pin 4, a lead block 2 and a catalytic electrode 3, wherein the lead pin 4 is arranged at the bottom of the housing 1, the lead block 2 is arranged in the housing 1, and electrolyte is adsorbed on the lead block 2; an air inlet 5 is formed in the top of the shell 1, a first breathable film 6 is arranged on the inner wall of the shell 1 corresponding to the air inlet 5, a pressure relief hole 7 is formed in the bottom of the shell 1, and a second breathable film 8 is arranged on the inner wall of the shell 1 corresponding to the pressure relief hole 7; the catalytic electrode 3 is arranged at the bottom of the first breathable film 6, one end of a first electrode lead 9 is connected with the catalytic electrode 3, the other end of the first electrode lead 9 penetrates out of the bottom of the shell 1 and is electrically connected with one lead pin 4, the diaphragm paper 11 is arranged between the first electrode lead 9 and the lead block 2 and between the catalytic electrode 3 and the lead block 2, one end of a second electrode lead 10 is arranged at the top of the lead block 2 and is arranged at the bottom of the diaphragm paper 11, and the other end of the second electrode lead 10 penetrates out of the bottom of the shell 1 and is electrically connected with the other lead pin 4.
Two lead pins 4 are used for connecting an external circuit, and outside air enters the sensor through an air inlet 5. The oxygen and the lead block 2 generate oxidation reaction under the catalysis of the catalytic electrode 3, and the oxidation reaction causes the current between the first electrode lead 9 and the second electrode lead 10 to change, so that the oxygen content is reacted by the change of the current. When the pressure in the sensor is increased due to packaging or temperature change, the air pressure is discharged from the pressure discharge hole 7. In this embodiment, the first gas permeable membrane 6 and the second gas permeable membrane 8 are PTFE membranes, respectively, which facilitate gas permeation and prevent liquid permeation.
Preferably, two layers of the first air-permeable membrane 6 are arranged at the air inlet 5, so as to avoid the influence of the electrolyte on the blockage of the air inlet 5 and the like.
Specifically, the material of the catalytic electrode 3 is at least one of carbon and platinum. In practice, the first electrode lead and the second electrode lead are respectively made of metal wires such as platinum wires, and in this embodiment, the first electrode lead 9 and the second electrode lead 10 are respectively made of nickel wires.
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. An electrochemical oxygen sensor, comprising: the catalytic reactor comprises a shell, a lead pin, a lead block and a catalytic electrode, wherein the lead pin is arranged at the bottom of the shell, the lead block is arranged in the shell, and electrolyte is adsorbed on the lead block; an air inlet is formed in the top of the shell, a first breathable film is arranged on the inner wall of the shell corresponding to the air inlet, a pressure relief hole is formed in the bottom of the shell, and a second breathable film is arranged on the inner wall of the shell corresponding to the pressure relief hole; the catalytic electrode is arranged at the bottom of the first breathable film, one end of a first electrode lead is connected with the catalytic electrode, the other end of the first electrode lead penetrates out of the bottom of the shell and is electrically connected with a lead pin, diaphragm paper is arranged between the first electrode lead and the lead block and between the catalytic electrode and the lead block, one end of a second electrode lead is arranged at the top of the lead block and is arranged at the bottom of the diaphragm paper, and the other end of the second electrode lead penetrates out of the bottom of the shell and is electrically connected with another lead pin.
2. The electrochemical oxygen sensor of claim 1, wherein: and two layers of first breathable films are arranged at the air inlet.
3. The electrochemical oxygen sensor of claim 1, wherein: the first and second gas permeable membranes are PTFE membranes, respectively.
4. The electrochemical oxygen sensor of claim 1, wherein: the material of the catalytic electrode is at least one of carbon or platinum.
5. The electrochemical oxygen sensor of claim 1, wherein: the first electrode lead and the second electrode lead are respectively nickel wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134320.0U CN210221892U (en) | 2019-07-18 | 2019-07-18 | Electrochemical oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921134320.0U CN210221892U (en) | 2019-07-18 | 2019-07-18 | Electrochemical oxygen sensor |
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| Publication Number | Publication Date |
|---|---|
| CN210221892U true CN210221892U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921134320.0U Active CN210221892U (en) | 2019-07-18 | 2019-07-18 | Electrochemical oxygen sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220952A (en) * | 2019-07-18 | 2019-09-10 | 郑州美克盛世电子科技有限公司 | Electrochemical oxygen sensor |
| CN115165985A (en) * | 2022-07-19 | 2022-10-11 | 华中科技大学 | Electrochemical hydrogen sulfide sensor based on ionic liquid and preparation method thereof |
-
2019
- 2019-07-18 CN CN201921134320.0U patent/CN210221892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220952A (en) * | 2019-07-18 | 2019-09-10 | 郑州美克盛世电子科技有限公司 | Electrochemical oxygen sensor |
| CN115165985A (en) * | 2022-07-19 | 2022-10-11 | 华中科技大学 | Electrochemical hydrogen sulfide sensor based on ionic liquid and preparation method thereof |
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