CN202033323U - Improved structure of nitrogen dioxide electrochemical sensor gas passage - Google Patents
Improved structure of nitrogen dioxide electrochemical sensor gas passage Download PDFInfo
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- CN202033323U CN202033323U CN201120089604XU CN201120089604U CN202033323U CN 202033323 U CN202033323 U CN 202033323U CN 201120089604X U CN201120089604X U CN 201120089604XU CN 201120089604 U CN201120089604 U CN 201120089604U CN 202033323 U CN202033323 U CN 202033323U
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- nitrogen dioxide
- bowl
- gas
- electrochemical sensor
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Abstract
The utility model relates to an improved structure of a nitrogen dioxide electrochemical sensor gas passage, which comprises a gas inlet passage shell, a ventilation diaphragm, an upper cover, an adsorption layer and a dust filter diaphragm; the upper cover is in a bowl shape, the bottom part of the upper cover is provided with a plurality of vent holes, the upper cover is fixed in a notch on the port of the shell in a thermal pressing way, the ventilation diaphragm covers the bottom of the bowl, the adsorption layer is arranged in a bowl-shaped cavity above the ventilation diaphragm, and the dust filter diaphragm is adhered on the bowl rim of the upper cover. The improved structure of the nitrogen dioxide electrochemical sensor has the following advantages that: since the adsorption layer is added on a sensor gas inlet passage, and consists of silver sulfate fine particles, the sulfureted hydrogen gas which is mixed with the nitrogen dioxide gas can be effectively adsorbed, the nitrogen dioxide gas can pass through the passage, and the real content of the nitrogen dioxide gas in the environment can be rapidly and accurately detected.
Description
Technical field:
The utility model relates to a kind of electrochemical sensor, more specifically to a kind of structure-improved of nitrogen dioxide electrochemical sensor gas passage.
Background technology:
Nitrogen dioxide is called hyponitric acid again, is one of oxides of nitrogen.For the rufous paramagnetism gas of penetrating odor is arranged, be insoluble in water under the room temperature.Nitrogen dioxide sucks the back lung tissue is had strong impulse and corrosivity.As the nitrogen dioxide of one of oxides of nitrogen, be the intermediate product of industrial nitric acid synthesis, there is every year about millions of ton to be discharged in the atmosphere, be a kind of important atmosphere pollution, so the gas of discharging need be handled and detect.Common detection method is to adopt electrochemical sensor to come the content of the nitrogen dioxide in the testing environment, the principle of work of electrochemical sensor is by coming work with tested gas reacts and generation is directly proportional with gas concentration electric signal, but, owing to contain hydrogen sulfide gas in the target combination gas, cause the nitrogen dioxide sensor also can cross reaction to hydrogen sulfide gas, just caused when removing in the testing environment nitrogen dioxide content with the nitrogen dioxide electrochemical sensor, the indicated value of sensor can be higher and untrue, so the structure of nitrogen dioxide electrochemical sensor is further improved.
The utility model content:
The purpose of this utility model be provide at the prior art weak point a kind of simple in structure, degree of accuracy is high, can remove the structure-improved of the nitrogen dioxide electrochemical sensor gas passage that contains hydrogen sulfide gas in the target combination gas.
The purpose of this utility model is to realize by following measure: a kind of structure-improved of nitrogen dioxide electrochemical sensor gas passage, comprise the inlet channel shell, and it is characterized in that also having ventilated membrane, loam cake, adsorbed layer, filter dirt film; Described loam cake is bowl-shape, and its bottom has some bleeder vents, loam cake to be fixed on by hot pressing in the notch of outer cover port, and the bowl end covers one deck ventilated membrane, and adsorbed layer is positioned at the bowl-shape cavity of ventilated membrane top, and filter dirt film sticks on loam cake the rim of a bowl.
Described adsorbed layer is made up of the silver sulfate fine particle.
Compared with prior art, the structure-improved of the nitrogen dioxide electrochemical sensor gas passage that the utility model proposes, has following advantage: owing on the sensor inlet channel, set up adsorbed layer, adsorbed layer adopts the silver sulfate fine particle to form, can adsorb the hydrogen sulfide gas that is mingled in the nitrogen dioxide gas effectively, allow nitrogen dioxide gas pass through, thus can be rapidly, the real content of nitrogen dioxide gas in the testing environment exactly.
Description of drawings:
Fig. 1 is an example structure synoptic diagram that the utility model proposes.
Embodiment:
Below in conjunction with accompanying drawing embodiment is elaborated: Fig. 1 is an example structure synoptic diagram that the utility model proposes.Among the figure, a kind of structure-improved of nitrogen dioxide electrochemical sensor gas passage comprises inlet channel shell 1, ventilated membrane 2, loam cake 3, adsorbed layer 4, filter dirt film 5; Described loam cake 3 is bowl-shape, and its bottom has some bleeder vents 31, loam cake 3 to be fixed on by hot pressing in the notch of shell 1 port, and the bowl end covers one deck ventilated membrane 2, and adsorbed layer 3 is positioned at the bowl-shape cavity of ventilated membrane top, and filter dirt film 6 sticks on loam cake the rim of a bowl.Described adsorbed layer is made up of the silver sulfate fine particle, when the mixed gas that contains hydrogen sulfide gas and nitrogen dioxide gas passes through the utility model, stink damp cognition is adsorbed layer absorption, only allow nitrogen dioxide gas pass through, so just can guarantee to detect the real content of nitrogen dioxide gas in the environment.
The foregoing description does not constitute restriction of the present utility model, and all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.
Claims (2)
1. the structure-improved of a nitrogen dioxide electrochemical sensor gas passage comprises the inlet channel shell, it is characterized in that, also has ventilated membrane, loam cake, adsorbed layer, filter dirt film; Described loam cake is bowl-shape, and its bottom has some bleeder vents, loam cake to be fixed on by hot pressing in the notch of outer cover port, and the bowl end covers one deck ventilated membrane, and adsorbed layer is positioned at the bowl-shape cavity of ventilated membrane top, and filter dirt film sticks on loam cake the rim of a bowl.
2. the structure-improved of nitrogen dioxide electrochemical sensor gas passage according to claim 1 is characterized in that described adsorbed layer is made up of the silver sulfate fine particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120089604XU CN202033323U (en) | 2011-03-29 | 2011-03-29 | Improved structure of nitrogen dioxide electrochemical sensor gas passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120089604XU CN202033323U (en) | 2011-03-29 | 2011-03-29 | Improved structure of nitrogen dioxide electrochemical sensor gas passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033323U true CN202033323U (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120089604XU Expired - Lifetime CN202033323U (en) | 2011-03-29 | 2011-03-29 | Improved structure of nitrogen dioxide electrochemical sensor gas passage |
Country Status (1)
| Country | Link |
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| CN (1) | CN202033323U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362325A (en) * | 2017-01-26 | 2018-08-03 | 霍尼韦尔国际公司 | Enter and leave the air-flow of sensor device |
| CN109477808A (en) * | 2016-07-12 | 2019-03-15 | 霍尼韦尔国际公司 | For detecting the electrochemical gas sensor of hydrogen cyanide gas |
-
2011
- 2011-03-29 CN CN201120089604XU patent/CN202033323U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477808A (en) * | 2016-07-12 | 2019-03-15 | 霍尼韦尔国际公司 | For detecting the electrochemical gas sensor of hydrogen cyanide gas |
| US10816503B2 (en) | 2016-07-12 | 2020-10-27 | Honeywell International Inc. | Electrochemical gas sensor for detecting hydrogen cyanide gas |
| CN109477808B (en) * | 2016-07-12 | 2021-11-23 | 霍尼韦尔国际公司 | Electrochemical gas sensor for detecting hydrogen cyanide gas |
| EP3485263B1 (en) * | 2016-07-12 | 2023-05-24 | Honeywell International Inc. | Electrochemical gas sensor for detecting hydrogen cyanide gas |
| CN108362325A (en) * | 2017-01-26 | 2018-08-03 | 霍尼韦尔国际公司 | Enter and leave the air-flow of sensor device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |