CN201359605Y - Expiration alcohol content detector gas leak prevention one-way blow pipe - Google Patents
Expiration alcohol content detector gas leak prevention one-way blow pipe Download PDFInfo
- Publication number
- CN201359605Y CN201359605Y CNU2009201351226U CN200920135122U CN201359605Y CN 201359605 Y CN201359605 Y CN 201359605Y CN U2009201351226 U CNU2009201351226 U CN U2009201351226U CN 200920135122 U CN200920135122 U CN 200920135122U CN 201359605 Y CN201359605 Y CN 201359605Y
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- China
- Prior art keywords
- blowpipe
- air
- gas
- unidirectional
- sleeve
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- Expired - Fee Related
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Abstract
The utility model discloses an expiration alcohol content detector gas leak prevention one-way blow pipe, which comprises blow pipe body, a concave hole connected with a pressure sensor and a concave hole connected with an alcohol sensor are arranged on the downside wall of the body, and a one-way plug is arranged in an air inlet of the body. The expiration alcohol content detector gas leak prevention one-way blow pipe completely solves the air leakage problem at the joint of the pressure sensor and the joint of the alcohol sensor, improves the detection precision of blowing pressure and alcohol content, and meets the unidirectional requirement of the national standard GB/T21254-2007 on blow pipes, and the one-way blow pipe can prevent cheat of indrawn breath, and more importantly, prevent health hazard brought by indrawn breath.
Description
Technical field
The utility model relates to a kind of alcoholicity of exhaled gas detector, particularly alcoholicity of exhaled gas detector blow tube construction.
Background technology
The police comes the alcohol content of test drives person in exhaling by the alcoholicity of exhaled gas detector, thereby judges whether the driver drives when intoxicated.The test process that a kind of alcoholicity of exhaled gas detector is arranged is finished air blowing to blowpipe by operation steps by the measured for inserting disposable blowpipe.This interface unit indent) and alcohol sensor interface unit (notes: this interface unit indent) (1) the existing employed alcoholicity of exhaled gas detector of people blow tube construction all is to insert detector pressure transducer interface unit by the outward extending evagination tubing string of blowpipe outer wall (to annotate:, in this case, the composition surface is positioned at blowpipe cavity outside, because the reason of draught head and sealing can cause gas leakage, this gas leakage can influence the accuracy of detection of blow gas pressure and alcohol content.(2) alcoholicity of exhaled gas detector standard GB/T21254-2007 the 4.17th joint is pointed out at blowpipe specially: " wine inspection instrument should adopt unidirectional blowpipe, can not suck the residue in the measuring system to guarantee the tester." the general employing of existing unidirectional blowpipe finish at unidirectional blow gun of blowpipe front overcoat, this design complexity makes the processing cost height, inconvenient operation is not attractive in appearance in appearance.
The utility model content
Shortcoming at above-mentioned prior art existence, the purpose of this utility model is to provide a kind of alcoholicity of exhaled gas detector anti-gas-leak unidirectional blowpipe, this utility model can satisfy the needs of detected pressures and alcohol, leak gas in the time of can preventing detected pressures and alcohol, and guarantee the unidirectional characteristic of passing through of air-flow.
The technical solution adopted in the utility model is: the unidirectional blowpipe of a kind of alcoholicity of exhaled gas detector anti-gas-leak, it comprises the blowpipe body, on the downside wall of described body, offer inward recess that is connected with pressure transducer and the inward recess that is connected with alcohol sensor, be built-in with one-way plug one at the air intake opening place of described body.
The inward recess that pressure transducer connects is inwardly recessed from described blowpipe body respectively with the inward recess that is connected with alcohol sensor, and pressure transducer connector and alcohol sensor connector insert the corresponding inward recess of described blowpipe body respectively.
Built-in one-way plug one is two sleeve combinations of built-in different hardness, and soft sleeve is positioned at the rigid sleeve skin, and soft sleeve is very soft, and end face can move with air-flow.When forward was blown, blow gas pressure was with the soft sleeve rigid sleeve of blowing off, and air-flow can pass through smoothly; When forward was air-breathing, pressure of inspiration(Pi) inhaled soft sleeve by rigid sleeve, and gas circuit is stopped up, and realizes the unidirectional characteristic of passing through of air-flow with this.
The unidirectional blowpipe of this alcoholicity of exhaled gas detector anti-gas-leak has thoroughly solved the gas leakage problem of pressure transducer junction and alcohol sensor junction, improved the accuracy of detection of blow gas pressure and alcohol content, satisfied the one-way requirement of standard GB/T21254-2007 about blowpipe, can not only prevent the cheating of suck-back gas, the more important thing is the health hazard that can prevent that the suck-back band of gas from coming.
Description of drawings
Fig. 1 is a wiring layout of the present utility model.
Embodiment
The unidirectional blowpipe of anti-gas-leak is a kind of diplopore alcoholicity of exhaled gas detector blowpipe, in blowpipe stage casing internal baffle, via hole is arranged in the middle of the baffle plate, blow by an end, air flow stream is crossed the baffle plate via hole and is flowed out from the other end, on the blowpipe downside wall before and after the baffle plate aperture is arranged respectively, the front is the pressure transducer air admission hole, and the back is the alcohol sensor air admission hole, when blowing because fluid mechanics principle, the pressure transducer air admission hole is a malleation, the alcohol sensor air admission hole is a negative pressure, and just in time opposite when air-breathing, and alcohol tester is built-in with pressure transducer and detects air admission hole pressure, distinguish air inlet and air-breathing with this, prevent the suck-back cheating.
The unidirectional blowpipe of anti-gas-leak has the anti-gas-leak function, see accompanying drawing blowpipe body 3, two apertures are arranged on body 3, these on two aperture left sides are the pressure breathing hole as mentioned above, one on the right is the alcohol air admission hole, these two Kong Junxiang blowpipe body interior are recessed, pressure transducer connector and alcohol sensor connector insert respectively in the corresponding inward recess of body, surface of contact just is included in the blowpipe body like this, mating surface is tight than other mode, even gas leakage also is to leak in the same environment, pressure is identical with gas ingredients, can build-up of pressure detect and the distortion of alcohol detection.
The unidirectional blowpipe of anti-gas-leak has the unidirectional characteristic of passing through, see accompanying drawing rigid sleeve 1 and soft sleeve 2, rigid sleeve and soft sleeve are assembled into the blowpipe body and form built-in one-way plug one, rigid sleeve hardness is big, and soft sleeve hardness is little, and the soft sleeve in assembling back is positioned at the rigid sleeve skin, soft sleeve end face has a diaphragm to move with air-flow, when forward was blown, blow gas pressure was with the soft sleeve end face diaphragm rigid sleeve of blowing off, and air-flow can pass through smoothly; When forward was air-breathing, pressure of inspiration(Pi) inhaled soft sleeve end face diaphragm by rigid sleeve, and gas circuit is stopped up, and realizes the unidirectional characteristic of passing through of air-flow with this.
In order to locate conveniently, also have clinodiagonal two square locating pieces outside the blowpipe body 3.The convex arrow indication of prompting air blowing direction is arranged on body in addition.
It more than is preferred embodiment of the present utility model; all changes of doing according to technical solutions of the utility model; no matter be part or all changes, when the function that is produced does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (3)
1, the unidirectional blowpipe of a kind of alcoholicity of exhaled gas detector anti-gas-leak, comprise the blowpipe body, it is characterized in that: offer inward recess that is connected with pressure transducer and the inward recess that is connected with alcohol sensor on the downside wall of described blowpipe body, be built-in with one-way plug one at the air intake opening place of described body.
2, the unidirectional blowpipe of alcoholicity of exhaled gas detector anti-gas-leak according to claim 1, it is characterized in that: the described inward recess that is connected with pressure transducer is inwardly recessed from described blowpipe body respectively with the inward recess that is connected with alcohol sensor, and pressure transducer interface unit and alcohol sensor interface unit insert the corresponding inward recess of described blowpipe body respectively.
3, the unidirectional blowpipe of alcoholicity of exhaled gas detector anti-gas-leak according to claim 1 and 2, it is characterized in that: described built-in one-way plug one is two sleeve combinations of built-in different hardness, soft sleeve is positioned at the rigid sleeve skin, soft sleeve is very soft, the end face diaphragm can move with air-flow, when forward was blown, blow gas pressure was with the soft sleeve end face diaphragm rigid sleeve of blowing off, and air-flow can pass through smoothly; When forward was air-breathing, pressure of inspiration(Pi) inhaled soft sleeve end face diaphragm by rigid sleeve, and gas circuit is stopped up, and realizes the unidirectional characteristic of passing through of air-flow with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201351226U CN201359605Y (en) | 2009-02-27 | 2009-02-27 | Expiration alcohol content detector gas leak prevention one-way blow pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201351226U CN201359605Y (en) | 2009-02-27 | 2009-02-27 | Expiration alcohol content detector gas leak prevention one-way blow pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359605Y true CN201359605Y (en) | 2009-12-09 |
Family
ID=41425370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201351226U Expired - Fee Related CN201359605Y (en) | 2009-02-27 | 2009-02-27 | Expiration alcohol content detector gas leak prevention one-way blow pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359605Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092644A (en) * | 2015-07-30 | 2015-11-25 | 武汉飞恩微电子有限公司 | Gas blowing channel structure of alcohol concentration sensor |
| CN111707811A (en) * | 2020-06-29 | 2020-09-25 | 重庆市畜牧科学院 | Lamb breathing gas concentration detection device and method based on sterile environment |
-
2009
- 2009-02-27 CN CNU2009201351226U patent/CN201359605Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092644A (en) * | 2015-07-30 | 2015-11-25 | 武汉飞恩微电子有限公司 | Gas blowing channel structure of alcohol concentration sensor |
| CN111707811A (en) * | 2020-06-29 | 2020-09-25 | 重庆市畜牧科学院 | Lamb breathing gas concentration detection device and method based on sterile environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20120227 |