CN208443629U - The anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor - Google Patents
The anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor Download PDFInfo
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- CN208443629U CN208443629U CN201821206658.8U CN201821206658U CN208443629U CN 208443629 U CN208443629 U CN 208443629U CN 201821206658 U CN201821206658 U CN 201821206658U CN 208443629 U CN208443629 U CN 208443629U
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Abstract
The utility model discloses a kind of anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor, the anti-sulfur dioxide interference filter membrane of HCN sensor includes membrane body, and the membrane body is the hydrophobic air permeable film containing desulfurizing agent.Sensor including the anti-sulfur dioxide interference filter membrane of HCN sensor comprising: HCN sensor, the end of probe of the HCN sensor are equipped with shelter, and the shelter is built-in with membrane body.The utility model can eliminate interference of the sulfur dioxide gas to HCN alarm.
Description
Technical field
The utility model relates to gas sensor domains, interfere more particularly, to a kind of anti-sulfur dioxide of HCN sensor
Filter membrane and its sensor.
Background technique
The HCN sensor that chemical plant Environmental security uses is electrochemical principle, and HCN is toxic articles, and HCN sensor is arranged
Afterwards, it when the HCN in live container or pipeline is leaked, can alarm at the first time, avoid the injury of personnel.
However, the HCN sensor of electrochemical principle is with sulfur dioxide gas, there are cross jammings, and interference ratio is about 1:
1, when in environment, there are (especially torch beside be frequently present of sulfur dioxide) when sulfur dioxide gas, HCN alarm can be caused
Alarm (simultaneously HCN gas is not present in reality), causes unnecessary fear.
Utility model content
The purpose of this utility model is to provide a kind of anti-sulfur dioxide of HCN sensor to interfere filter membrane and its sensor,
It can eliminate interference of the sulfur dioxide gas to HCN alarm.
In order to solve the above technical problems, the utility model provides a kind of anti-sulfur dioxide interference filter membrane of HCN sensor,
It includes membrane body, and the membrane body is the hydrophobic air permeable film containing desulfurizing agent.
Further, the membrane body is rounded or rectangular.
A kind of sensor including the anti-sulfur dioxide interference filter membrane of HCN sensor comprising: HCN sensor, it is described
The end of probe of HCN sensor is equipped with shelter, and the shelter is built-in with membrane body.
Further, the shelter includes:
Shelter upper outlet body is provided among the annular body portion for arranging film sheet with annular body portion
The aperture side wall of the aperture of body, the annular body portion is provided with HCN sensor fixing structure；
The shelter lower cover of both ends open, the shelter upper outlet body be installed on shelter lower cover on open
At mouthful, shelter lower cover has cylindrical shell body, is set to the intracorporal column inner housing of cylindrical shell, the cylindrical shell
For installing membrane body, shelter lower cover bottom is provided with positioned at cylindrical shell in gap between body and cylindrical shell body
Annular interconnecting piece between body, column inner housing has close to the cylindrical shell body of annular interconnecting piece, column inner housing interlaced arrangement
Opening.
Further, the HCN sensor fixing structure is internal thread structure.
Further, the shelter upper outlet body has the inner ring for being set to annular body portion tapping, is set to annular
The outer ring of main part outer edge.
Further, the top of the cylindrical shell body is provided with external thread structure, the outer ring of the shelter upper outlet body
It is provided with the internal thread structure with the cooperation of external thread structure set by cylindrical shell body.
The utility model has the following beneficial effects: it can eliminate interference of the sulfur dioxide gas to HCN alarm.
Detailed description of the invention
Fig. 1 is shelter upper outlet body structural schematic diagram.
Fig. 2 is shelter lower cover structural schematic diagram.
Fig. 3 is ventilated membrane schematic diagram, which is the ventilated membrane unfolding state figure for being installed on shelter lower cover.
Fig. 4 is ventilated membrane schematic diagram, which is the ventilated membrane exhibition being installed between the upper outlet body of shelter and lower cover
Open state figure.
Fig. 5 is to install the shelter schematic diagram for completing ventilated membrane additional.
Fig. 6 is the sensor schematic that the anti-sulfur dioxide of sensor containing HCN interferes filter membrane.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
In conjunction with specific embodiments, the utility model is further described in face.
Referring to Fig. 3 and Fig. 4, a kind of anti-sulfur dioxide interference filter membrane of HCN sensor comprising membrane body 1, the film sheet
Body is the hydrophobic air permeable film containing desulfurizing agent.
Wherein, desulfurizing agent folder can be arranged in the hydrophobic air permeable film containing desulfurizing agent between two layers of hydrophobic air permeable film
Layer also or, prepares membrane body 1: one with the following method, 5 grams of desulfurizing agents is added in 10 grams of distilled water, is completely dissolved；Two,
Two panels hydrophobic air permeable film is put into lysate, is kept stirring；Three, hydrophobic air permeable film and lysate, such desulfurization are dried
Agent is just uniformly attached on ventilated membrane.
From Fig. 3 and Fig. 4 it is found that the membrane body is rounded or rectangular, it is adapted to according to installation environment.Wherein, circle
Shape membrane body is that a diameter is 30mm, thickness 2mm Circular article, and rectangular membrane body is generous respectively 100mm* one long
50mm*2mm the square items.
Referring to Fig. 6, a kind of sensor including the anti-sulfur dioxide interference filter membrane of HCN sensor comprising: HCN sensing
Device 2, the end of probe of the HCN sensor 2 are equipped with shelter 3, and the shelter is built-in with membrane body 1.
Referring to Fig. 5, the shelter 3 includes: shelter upper outlet body 30 (referring to Fig. 1), with annular body portion
300, the circular opening 301 for arranging membrane body 1, the aperture in the annular body portion are provided among the annular body portion
Side wall is provided with 2 mounting structure of HCN sensor, such as internal thread structure；The shelter lower cover 31 of both ends open is (referring to figure
2), the shelter upper outlet body 30 is installed at the upper opening of shelter lower cover 31, and shelter lower cover 31 has
Cylindrical shell body 310 is set to the intracorporal column inner housing 311 of cylindrical shell, the cylindrical shell body and cylindrical shell body it
Between gap for installing membrane body 1, shelter lower cover bottom is provided between cylindrical shell body, column inner housing
Annular interconnecting piece 32, have opening close to the annular cylindrical shell body of interconnecting piece, column inner housing interlaced arrangement.And shelter
Upper outlet body 30 can directly be stuck in 31 top of shelter lower cover using the card interface of lower edge.
It can be seen that cylindrical shell body, cylindrical internal shell body from Fig. 2 and Fig. 6 to realize by the opening of interlaced arrangement
Air is communicated with cavity in cylindrical internal shell body, and the set opening of cylindrical shell body is defined as outward opening 312, cylindrical internal shell body
Set opening is defined as inner opening 313, and the path that interlaced arrangement opening can allow air to flow through membrane body is longer, is conducive to interference sulphur
The absorption of compound.
Referring to Fig. 1, the shelter upper outlet body has the inner ring 302 for being set to annular body portion tapping, is set to
The outer ring 303 of annular body portion outer edge, so as to which shelter upper outlet body to be installed on to the top of shelter lower cover 31
Portion.And it is the stability for improving assembly, the top of the cylindrical shell body is provided with external thread structure, the shelter upper cover
The outer ring of body is provided with the internal thread structure with the cooperation of external thread structure set by cylindrical shell body, so as to will be on shelter
Cover is screwed into shelter lower cover.
Extraneous air stream is through path are as follows: the outward opening of cylindrical shell body → cylindrical internal shell body, cylindrical shell body it
Between gap → cylindrical internal shell intracoelomic cavity → shelter upper outlet body opening, the detecting head of sensor is finally reached, here, in circle
Gap is equipped with membrane body between column inner housing, cylindrical shell body, vulcanizes sulfur dioxide chaff interferent in air at this time by between
Membrane body in gap absorbs, and shelter upper outlet body opening is equally equipped with membrane body and (is arranged in cylindrical internal shell body top
Edge, circular membrane body edges position are pressed in the outer edge of cylindrical internal shell body by the inner ring of shelter upper outlet body, to keep
Round membrane body unfolded state), when reaching sensor probe by the absorption of twice membrane body, can effectively filter
Sulfur dioxide, so that sulfur dioxide interference HCN sensor be avoided to report by mistake.In use, sensor and shelter
Placing attitude as shown in fig. 6, be a placement plane in the bottom of shelter, this place plane can allow it is cylindric
The under shed of inner casing avoids enter into large quantity of air, can also be with even if from shelter bottom and placing plane and entering a small amount of air
Sulfur dioxide in air is fallen by the circular membrane bulk absorption of shelter upper outlet body opening.
Due to 2 mounting structure of HCN sensor be internal thread structure, so HCN sensor end of probe be provided with it is matched
External thread structure, so that end of probe is screwed into shelter upper outlet body 30.
Weather proof is screwed into after the membrane body of Fig. 3 and Fig. 4 is installed respectively is located in shelter 3, then by HCN sensor 2
The upper cover body portion of cover, probe gas enter before end of probe, and sulfur dioxide gas can be absorbed by the membrane body of shelter,
The case where to avoid end of probe from reporting by mistake.
It is as follows for the test data of the sensor:
One, it is each led into sulfur dioxide and HCN standard gas and the HCN sensor containing desulfurizing agent hydrophobic air permeable film is not added
On, observed reading, the response time, record:
As a result: sulfur dioxide, which has HCN sensor with HCN standard gas, to react, as a result almost the same with standard gas.
Two, it is each led on the HCN sensor added with desulfurizing agent hydrophobic air permeable film, is seen with sulfur dioxide and HCN standard gas
Reading is examined, the response time records:
Sulfur dioxide standard gas does not react HCN sensor, and HCN standard gas has reaction to HCN sensor, as a result with standard gas base
This is consistent, and the response time does not increase.
Conclusion: being added in containing desulfurizing agent hydrophobic air permeable film can be avoided to the interference of sulfur dioxide on HCN sensor
Chronicity:
Increasing has the HCN sensor of desulfurizing agent hydrophobic air permeable film daily respectively with both above calibrating gas test one
It is secondary, start the standard gas value for occurring occurring 1% using the sensor of sulfur dioxide test HCN when test was to the 20th day.
Conclusion: it is recommended that the replacement of per half a month once contains desulfurizing agent hydrophobic air permeable film
So far through on-the-spot test, there is not false alarm phenomenon, scene is tested with HCN, is quick on the draw.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And range.
Claims (7)
1. a kind of anti-sulfur dioxide of HCN sensor interferes filter membrane comprising membrane body, which is characterized in that the membrane body is
Hydrophobic air permeable film containing desulfurizing agent.
2. the anti-sulfur dioxide of HCN sensor according to claim 1 interferes filter membrane, which is characterized in that the membrane body
It is rounded or rectangular.
3. a kind of includes the sensor of the anti-sulfur dioxide interference filter membrane of the HCN sensor as described in claim any one of 1-2,
It include: HCN sensor, which is characterized in that the end of probe of the HCN sensor is equipped with shelter, in the shelter
It is equipped with membrane body.
4. sensor according to claim 3, which is characterized in that the shelter includes:
Shelter upper outlet body is provided among the annular body portion for arranging membrane body with annular body portion
The aperture side wall of aperture, the annular body portion is provided with HCN sensor fixing structure；
The shelter lower cover of both ends open, the shelter upper outlet body are installed on the upper opening of shelter lower cover
Place, shelter lower cover have cylindrical shell body, are set to the intracorporal column inner housing of cylindrical shell, the cylindrical shell body
Gap between cylindrical shell body for installing membrane body, shelter lower cover bottom be provided with positioned at cylindrical shell body,
Annular interconnecting piece between column inner housing has out close to the cylindrical shell body of annular interconnecting piece, column inner housing interlaced arrangement
Mouthful.
5. sensor according to claim 4, which is characterized in that the HCN sensor fixing structure is internal thread structure.
6. sensor according to claim 4, which is characterized in that the shelter upper outlet body, which has, is set to annular master
The inner ring of body portion tapping, the outer ring for being set to annular body portion outer edge.
7. sensor according to claim 4, which is characterized in that the top of the cylindrical shell body is provided with external screw thread knot
Structure, the outer ring of the shelter upper outlet body are provided with the internal thread structure with the cooperation of external thread structure set by cylindrical shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821206658.8U CN208443629U (en) | 2018-07-27 | 2018-07-27 | The anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821206658.8U CN208443629U (en) | 2018-07-27 | 2018-07-27 | The anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208443629U true CN208443629U (en) | 2019-01-29 |
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ID=65086735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821206658.8U Active CN208443629U (en) | 2018-07-27 | 2018-07-27 | The anti-sulfur dioxide interference filter membrane of HCN sensor and its sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208443629U (en) |
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2018
- 2018-07-27 CN CN201821206658.8U patent/CN208443629U/en active Active
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