CN203870018U - Detecting device for various kinds of gas - Google Patents
Detecting device for various kinds of gas Download PDFInfo
- Publication number
- CN203870018U CN203870018U CN201420200822.XU CN201420200822U CN203870018U CN 203870018 U CN203870018 U CN 203870018U CN 201420200822 U CN201420200822 U CN 201420200822U CN 203870018 U CN203870018 U CN 203870018U
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- CN
- China
- Prior art keywords
- detection cavity
- gas
- infrared detection
- infrared
- face
- 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.)
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000001514 detection method Methods 0.000 claims abstract description 48
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 42
- 239000004065 semiconductor Substances 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 206010070834 Sensitisation Diseases 0.000 claims description 4
- 230000008313 sensitization Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 34
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 239000002737 fuel gas Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Abstract
The utility model relates to a detecting device for various kinds of gas, which is characterized by comprising a platinum resistor heater, a semiconductor gas sensitive layer, an infrared detection cavity and an infrared receiver, wherein the semiconductor gas sensitive layer is attached to one end face of the platinum resistor heater, and the other end face of the platinum resistor heater is arranged on the inner surface of one end of the infrared detection cavity and is fixedly connected with two lead wires; the other ends of the two lead wires penetrates through one end face of the infrared detection cavity and are connected with an external power supply; the infrared receiver is fixedly arranged on the inner surface of the other end of the infrared detection cavity; the two lead wires of the infrared receiver penetrate through the other end face of the infrared detection cavity and are connected with an external device; a vent hole is formed in one side surface of the infrared detection cavity. The detecting device has the advantages that the size is small, the cost is low, the power consumption amount is less, and the carrying is convenient, so that the device can be widely applied to the gas detection fields of fuel gas detection, indoor air exchange detection, underground garage air quality detection, atmospheric pollutant detection and automobile tail gas detection.
Description
Technical field
The utility model relates to a kind of gas-detecting device, particularly about a kind of multiple types gas-detecting device for air quality is detected.
Background technology
Sensor based on certain principle can only detect certain class gas, and air quality monitoring need to detect multiple gases, therefore needs multiple sensors based on different principle just can complete the detection to multiple types gas.When the pick-up unit that uses multiple standalone sensors to form detects variety classes gas respectively, this pick-up unit has the shortcomings such as volume is large, cost is high, power consumption is many and be inconvenient to carry.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide the multiple types gas-detecting device that a kind of volume is little, cost is low, power consumption is few, be convenient for carrying.
For achieving the above object, the utility model is taked following technical scheme: one kind of multiple class gas-detecting devices, is characterized in that: it comprises a platinum resistance calandria, semiconductor gas sensitization layer, an infrared detection cavity and an infrared remote receiver; On one end face of described platinum resistance calandria, be attached with described semi-conductor gas sensitive layer, the other end of described platinum resistance calandria is fixedly installed on the inside surface of described infrared detection cavity one end, and on the other end of described platinum resistance calandria, being fixedly connected with two lead-in wires, the other end of two described lead-in wires is all through an end face of described infrared detection cavity and connect external power source; Described infrared remote receiver is fixedly installed on the inside surface of the described infrared detection cavity other end, and two lead-in wires of described infrared remote receiver are through the other end of described infrared detection cavity and connect described external unit, and a side opening of described infrared detection cavity is provided with the air hole that detects gas for passing into.
Described platinum resistance calandria comprises a ceramic bases, two electrodes, some platinum heating plates and an insulation course; Be positioned at described ceramic bases two ends be fixedly installed one respectively described in electrode, two described lead-in wire one end connect two respectively described in electrode, two described lead-in wire other ends are all through an end face of described infrared detection cavity and connect external power source; Described in two between electrode, interval is fixedly installed some described platinum heating plates; Described insulation course be fixedly installed on two described on electrode and some described platinum heating plates.
The quantity of described platinum heating plate is set to three.
Described semi-conductor gas sensitive layer is by SNO
2doped precious metal forms, and noble metal adopts one or both in platinum and palladium.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is because employing comprises platinum resistance calandria, semi-conductor gas sensitive layer, infrared detection cavity and infrared remote receiver, adopt platinum resistance calandria and semi-conductor gas sensitive layer to complete the detection of the various gas concentrations of based semiconductor type sensor detection, adopt platinum resistance calandria and infrared remote receiver to complete the detection of the various gas concentrations that detect based on infrared absorption type sensor, the gaseous species that therefore uses the utility model to detect is more.2, the utility model is owing to adopting platinum resistance calandria to realize the two function of the luminophor in the heater in semiconductor type sensor and infrared absorption type sensor in prior art, therefore more compact structure of the present utility model, volume is smaller and more exquisite, and the electric energy of consumption still less.Based on above advantage, the utility model can be widely used in combustion gas detection, room air changes the field of gas detection such as wind detection, underground garage Detection of Air Quality, atmosphere pollution detection and automobile emission gas analyzer.
Brief description of the drawings
Fig. 1 is one-piece construction schematic diagram of the present utility model
Fig. 2 is platinum resistance heating element structure schematic diagram of the present utility model
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the utility model multiple types gas-detecting device comprises a platinum resistance calandria 1, semiconductor gas sensitization layer 2, an infrared detection cavity 3 and an infrared remote receiver 4.On one end face of platinum resistance calandria 1, be attached with semi-conductor gas sensitive layer 2, the other end of platinum resistance calandria 1 is fixedly installed on the inside surface of infrared detection cavity 3 one end, and on the other end of platinum resistance calandria 1, be fixedly connected with 5, two lead-in wire other ends of 5 of two lead-in wires all through an end face of infrared detection cavity 3 and connect external power source (not shown).Infrared remote receiver 4 is fixedly installed on the inside surface of infrared detection cavity 3 other ends, and two lead-in wires 5 of infrared remote receiver 4 pass the other end of infrared detection cavity 3 and connect external unit (not shown).One side opening of infrared detection cavity 3 is provided with air hole 6, is convenient to pass into detected gas.
In above-described embodiment, as shown in Figure 2, platinum resistance calandria 1 comprises a ceramic bases 11, two electrodes 12, some platinum heating plates 13 and an insulation course 14.Be positioned at ceramic bases 11 two ends and be fixedly installed respectively an electrode 12, be fixedly connected on the other end that on platinum resistance calandria 1 other end two lead-in wires 5 connect respectively 12, two lead-in wires 5 of two electrodes all through an end face of infrared detection cavity 3 and connect external power source; Between two electrodes 12, interval is fixedly installed some platinum heating plates 13.Insulation course 14 is fixedly installed on two electrodes 12 and some platinum heating plates 13.
In above-described embodiment, the quantity of platinum heating plate 13 is set to three.
In above-described embodiment, semi-conductor gas sensitive layer 2 is by SNO
2(tin ash) noble metal such as a small amount of platinum or palladium that adulterates forms.
Adopt the utility model to detect multiple gases, its testing process is:
First, in infrared detection cavity 3, pass into gas to be detected by air hole 6.
Secondly, 5 switch on to platinum resistance calandria 1 by going between.Platinum resistance calandria 1 heats semiconductor gas sensitization layer 2, make semi-conductor gas sensitive layer 2 reach uniform temperature, in the situation that semi-conductor gas sensitive layer 2 is temperature-resistant, the resistance value of semi-conductor gas sensitive layer 2 changes with the concentration change of gas to be detected, thereby completes the detection of the various gas concentrations of based semiconductor type sensor detection.
Finally, platinum resistance calandria 1 is as infrared light emission source, change the infrared light wavelength in infrared light emission source by changing the temperature of platinum resistance calandria 1, after its infrared light sending contacts with gas to be detected in infrared detection cavity 3, the energy of gas absorption specific wavelength infrared light to be detected, the infrared light of the absorbed specific wavelength of energy is transmitted to infrared remote receiver 4, infrared remote receiver 4 changes the infrared light strength signal receiving into electric signal, thereby complete the detection of the various gas concentrations that detect based on infrared absorption type sensor, and by two lead-in wires 5 of infrared remote receiver 4, testing result is transferred to external unit.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, connected mode and method step etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (3)
1. one kind of multiple class gas-detecting devices, is characterized in that: it comprises a platinum resistance calandria, semiconductor gas sensitization layer, an infrared detection cavity and an infrared remote receiver; On one end face of described platinum resistance calandria, be attached with described semi-conductor gas sensitive layer, the other end of described platinum resistance calandria is fixedly installed on the inside surface of described infrared detection cavity one end, and on the other end of described platinum resistance calandria, being fixedly connected with two lead-in wires, the other end of two described lead-in wires is all through an end face of described infrared detection cavity and connect external power source; Described infrared remote receiver is fixedly installed on the inside surface of the described infrared detection cavity other end, and two lead-in wires of described infrared remote receiver are through the other end of described infrared detection cavity and connect described external unit, and a side opening of described infrared detection cavity is provided with the air hole that detects gas for passing into.
2. one kind of multiple class gas-detecting devices as claimed in claim 1, is characterized in that: described platinum resistance calandria comprises a ceramic bases, two electrodes, some platinum heating plates and an insulation course; Be positioned at described ceramic bases two ends be fixedly installed one respectively described in electrode, two described lead-in wire one end connect two respectively described in electrode, two described lead-in wire other ends are all through an end face of described infrared detection cavity and connect external power source; Described in two between electrode, interval is fixedly installed some described platinum heating plates; Described insulation course be fixedly installed on two described on electrode and some described platinum heating plates.
3. one kind of multiple class gas-detecting devices as claimed in claim 2, is characterized in that: the quantity of described platinum heating plate is set to three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200822.XU CN203870018U (en) | 2014-04-23 | 2014-04-23 | Detecting device for various kinds of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200822.XU CN203870018U (en) | 2014-04-23 | 2014-04-23 | Detecting device for various kinds of gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203870018U true CN203870018U (en) | 2014-10-08 |
Family
ID=51650958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200822.XU Expired - Lifetime CN203870018U (en) | 2014-04-23 | 2014-04-23 | Detecting device for various kinds of gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203870018U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926210A (en) * | 2014-04-23 | 2014-07-16 | 南车二七车辆有限公司 | Device for detecting species of gases |
| CN104730116A (en) * | 2015-02-17 | 2015-06-24 | 杭州麦德乐传感科技有限公司 | Compound gas sensor |
-
2014
- 2014-04-23 CN CN201420200822.XU patent/CN203870018U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926210A (en) * | 2014-04-23 | 2014-07-16 | 南车二七车辆有限公司 | Device for detecting species of gases |
| CN103926210B (en) * | 2014-04-23 | 2017-01-11 | 南车二七车辆有限公司 | Device for detecting species of gases |
| CN104730116A (en) * | 2015-02-17 | 2015-06-24 | 杭州麦德乐传感科技有限公司 | Compound gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |