CN2731448Y - Gas detector - Google Patents
Gas detector Download PDFInfo
- Publication number
- CN2731448Y CN2731448Y CN 200420093529 CN200420093529U CN2731448Y CN 2731448 Y CN2731448 Y CN 2731448Y CN 200420093529 CN200420093529 CN 200420093529 CN 200420093529 U CN200420093529 U CN 200420093529U CN 2731448 Y CN2731448 Y CN 2731448Y
- Authority
- CN
- China
- Prior art keywords
- sensor
- air chamber
- gas detector
- pcb
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a gas detector, comprising a gas chamber seat, a gas chamber cover, a sensor PCB, a sensor glue plug, a powder metallurgy part, etc. The utility model is characterized in that the sensor PCB seat adopts the three needles seat universal structure, matches and provides with a switching PCB and a converting needle. The gas chamber adopts a solid sensor glue plug matching with the inner wall of the gas chamber seat and the sensor. The glue plug is provided with an inserting and removing hole.
Description
Technical field
The utility model relates to a kind of gas detector that is used for inflammable gas or poisonous gas detection.
Background technology
The situation of the excessive concentration of working site inflammable gas or toxic gas takes place sometimes in fields such as petrochemical complex, mine mine, metallurgy, poison gas operation, poison gas production, chemical defence, fire-fighting, medical science, environmental protection, health and epidemic prevention, hazardous materials transportation, become potential safety hazard, therefore the timely detection of poisonous or inflammable gas is become important step in the safety precaution process, the air chamber design of detector of the prior art makes gas and the abundant contact need of sensor for a long time, has reduced the response speed of sensing circuit.
In addition, the gas sensor life-span was generally one to two year, the life-span of electrochemical transducer[sensor is shorter, and the Sensor section in the air chamber of the prior art is welding manner with being connected of PCB base, and this makes to the very inconvenience of replacing of sensor, thereby must be often air-exchanging chamber more, cause very big waste, and sensor PCB base of the prior art is fixed all, and sensor that can only corresponding respective type, versatility is poor.
The utility model content
The gas detector that provides a kind of response speed fast is provided the purpose of this utility model, and it reduces the response time and the release time of detector by the capacity limitation to the air chamber inner chamber.
Another purpose of the present utility model is to provide a kind of reasonable in design, the detector that can maintain easily.
In order to achieve the above object, gas detector of the present utility model comprises air chamber base, air chamber cover, sensor PCB, sensor plug, sensor and powder metallurgy, it is characterized in that, described sensor PCB base adopts 3 needle stand universal architectures, and be equipped with switching PCB and change pin, adopt the solid sensor plug that cooperates with air chamber base inwall and sensor in the described air chamber, have on the plug to insert and unload the hole.
The utility model is rational in infrastructure, and its sensor PCB base adopts 3 jack structures to cooperate the switching pcb board, has realized to the connection of various types of gas sensors and to the light replacing of air chamber inner sensor.Plug in the air chamber adopts solid design, has reduced the useful volume of air chamber, helps the diffusion of gas, under identical reacting gas condition, can reduce the response time and the release time of sensor, has improved response speed.
The utility model will be illustrated in conjunction with the accompanying drawings by preferred embodiment.
Description of drawings:
Fig. 1 is the axial cut-open view of the utility model embodiment.
Fig. 2 is that the A-A of Fig. 1 is to cut-open view.
Embodiment:
As shown in Figure 1, the utility model is mainly by air chamber base 3, epoxide-resin glue 2, and sensor PCB base 4, switching PCB base 6, conversion pin 5, lock screw 7, air chamber cover 8, powder metallurgy 9, sensor plug 10, sensor 11, lead-in wire 1 and needle stand 12 constitute.Air chamber base 3 is a transition fit with air chamber cover 8, and be threaded with explosion-proof, lock screw 7 lockings, the first half encapsulated epoxy resin glue 2 of air chamber base 3, the pin of sensor 11 are welded in the switching PCB base 6, in the needle stand 12 that the conversion pin inserts with sensor PCB base 4 links to each other on the switching PCB base 6, sensor plug 10 closely cooperates with air chamber base 3 inwalls and sensor 11, powder metallurgy 9 is embedded in the groove of air chamber cover 8, and is pressed under the air chamber base, and material adopts 100 orders, 304 stainless steels.Sensor 11 can be an electrochemical sensor, catalytic sensor, or semiconductor transducer.
In such scheme, tested gas infiltrates by powder metallurgy 9 and is full of the air chamber inner chamber, and 11 pairs of gas concentrations of sensor are made response, and response signal 1 is delivered to amplification, filtering circuit by going between, and exports by output circuit again.Because the volume of air chamber inner chamber diminishes, tested gas can be full of very soon, and like this, sensor can be measured the concentration value of tested gas in a short period of time.In like manner, tested gas can penetrate air chamber very soon, and like this, also can reduce the release time of sensor.
When emat sensor more, earlier lock screw is screwed out, open air chamber cover, utilize again that aperture takes out plug on the described plug, extract original sensor and switching PCB base, inserts new sensor and the base PCB base of transferring and get final product.
Conversion pin on the switching PCB base in the utility model is that trigonometric expression is arranged, as shown in Figure 2.
When the less sensor of socket joint physical dimension, can between sensor and switching PCB base, add sensor support base, when having guaranteed to connect physical strength, realized control to the air chamber cavity volume.
Claims (5)
1. a gas detector comprises air chamber base, air chamber cover, sensor PCB, sensor plug, sensor and powder metallurgy, it is characterized in that, described sensor PCB base adopts 3 needle stand universal architectures, and be equipped with switching PCB and change pin, adopt the solid sensor plug that cooperates with air chamber base inwall and sensor in the described air chamber, have on the plug to insert and unload the hole.
2. gas detector according to claim 1 is characterized in that, the conversion pin on the switching PCB base is trigonometric expression and arranges.
3. gas detector according to claim 1 and 2 is characterized in that, said sensor is an electrochemical sensor.
4. gas detector according to claim 1 and 2 is characterized in that, said sensor is a catalytic sensor.
5. gas detector according to claim 1 and 2 is characterized in that, said sensor is a semiconductor transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093529 CN2731448Y (en) | 2004-09-13 | 2004-09-13 | Gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093529 CN2731448Y (en) | 2004-09-13 | 2004-09-13 | Gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731448Y true CN2731448Y (en) | 2005-10-05 |
Family
ID=35051781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093529 Expired - Fee Related CN2731448Y (en) | 2004-09-13 | 2004-09-13 | Gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731448Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110540A (en) * | 2014-10-31 | 2017-08-29 | 大金工业株式会社 | Air conditioner |
-
2004
- 2004-09-13 CN CN 200420093529 patent/CN2731448Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110540A (en) * | 2014-10-31 | 2017-08-29 | 大金工业株式会社 | Air conditioner |
| CN107110540B (en) * | 2014-10-31 | 2020-07-28 | 大金工业株式会社 | Air conditioner |
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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: 20051005 Termination date: 20130913 |