CN213121709U - Gas circuit embedded type TCD gas detector - Google Patents
Gas circuit embedded type TCD gas detector Download PDFInfo
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- CN213121709U CN213121709U CN202020913685.XU CN202020913685U CN213121709U CN 213121709 U CN213121709 U CN 213121709U CN 202020913685 U CN202020913685 U CN 202020913685U CN 213121709 U CN213121709 U CN 213121709U
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Abstract
The utility model discloses a type TCD gas detection ware is put into to gas circuit, including corrosion-resistant inertization cell body, the reference cavity has been seted up to the inboard of corrosion-resistant inertization cell body, the interior top side of reference cavity is provided with first thermistor, one side that the interior top side of reference cavity is close to first thermistor is provided with the second thermistor. The utility model discloses in, through corrosion-resistant gas hood and flexible air duct to gaseous collection, make each thermistor and the gilding tungsten filament on it can be in first reference gas circuit passageway, second reference gas circuit passageway and first test gas circuit passageway, the quick abundant contact gas in second test gas circuit passageway, make gas can take away more heats, and then promote signal response speed, and do not lose thermistor's sensitivity, make equivalent gas can produce stronger "signal" response value.
Description
Technical Field
The utility model relates to a physical adsorption appearance and chemical adsorption appearance equipment technical field especially relate to a type TCD gas detection ware is put into to gas circuit.
Background
For a physical adsorption instrument and a chemical adsorption instrument, the change of the gas concentration in the mixed gas needs to be detected in the working process;
the cell body structure of the gas concentration detector used at present adopts a diffusion type, the contact time of gas and a hot wire in the structure is short, and gas components can be contacted with a thermosensitive element of the detector after diffusion, so the change of the resistance value of the thermosensitive element is small, the response is not timely, the sensitivity is low, the signal response value generated by equivalent gas is low, and the requirement of detecting the continuous change of the low-concentration gas components can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a gas circuit embedded TCD gas detector.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a gas path embedded type TCD gas detector comprises a corrosion-resistant inerting cell body, wherein a reference cavity is formed in the inner side of the corrosion-resistant inerting cell body, a first thermistor is arranged on the inner top side of the reference cavity, a second thermistor is arranged on one side, close to the first thermistor, of the inner top side of the reference cavity, a first reference gas path channel is formed in one side, corresponding to the reference cavity, of the top side of the outer side wall of the corrosion-resistant inerting cell body, a second reference gas path channel is formed in the position, corresponding to the reference cavity, of the bottom side of the outer side wall of the corrosion-resistant inerting cell body, a test cavity is fixedly connected to the inner side, close to the reference cavity, of the inner side of the corrosion-resistant inerting cell body, a third thermistor is arranged on the inner top side of the test cavity, a fourth thermistor is arranged on one side, close to the third thermistor, of the top of the outer side, far away from, and a second test gas path channel is formed on one side, close to the first test gas path channel, of the outer side wall of the corrosion-resistant inerting tank body.
As a further description of the above technical solution:
the first reference gas path channel and the second reference gas path channel are communicated with the reference cavity.
As a further description of the above technical solution:
and the first test air path channel and the second test air path channel are communicated with the test cavity.
As a further description of the above technical solution:
the fourth thermistor, the first thermistor, the second thermistor and the third thermistor are all fixedly connected with gold-plated tungsten wires, and the four gold-plated tungsten wires respectively extend to the inner sides of the reference cavity and the test cavity.
As a further description of the above technical solution:
and the ports of the second reference gas path channel and the second test gas path channel are fixedly connected with telescopic gas guide tubes.
As a further description of the above technical solution:
and one end of each of the two corrosion-resistant telescopic air guide pipes, which is far away from the corrosion-resistant inerting tank body, is fixedly connected with a corrosion-resistant air hood.
The utility model discloses following beneficial effect has:
the gas path embedded type TCD gas detector comprises a Wheatstone bridge consisting of a first thermistor, a second thermistor, a third thermistor and a fourth thermistor, wherein the first thermistor and the second thermistor are arranged in a reference cavity of a corrosion-resistant inerting cell body, the third thermistor and the fourth thermistor are arranged in a test cavity of the corrosion-resistant inerting cell body, a structure that every two thermistor cavities needing gas diffusion contact are not adopted, so that each thermistor is directly embedded into a gas flow gas path, and the gas is collected through a corrosion-resistant gas hood and a telescopic gas guide tube, so that each thermistor and a gold-plated tungsten wire on the thermistor can be quickly and fully contacted with the gas in a first reference gas path channel, a second reference gas path channel, a first test gas path channel and a second test gas path channel, more heat can be taken away by the gas, and the signal response speed is further improved, the use of two independent single-cavity technologies of the reference cavity and the test cavity enables the detector to reduce the internal volume of the detector on the premise of not reducing the length of the thermistor, does not lose the sensitivity of the thermistor, and enables equivalent gas to generate a stronger signal response value.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a side view structure of the corrosion-resistant inerting tank of the present invention;
fig. 3 is a schematic view of the structure of the telescopic airway tube and the corrosion-resistant gas hood of the present invention.
Illustration of the drawings: 1. a corrosion-resistant inerted tank body; 2. a reference cavity; 3. a test chamber; 4. a first reference gas path channel; 5. a first test gas path channel; 6. a second reference gas path channel; 7. a second test gas path channel; 8. a first thermistor; 9. a second thermistor; 10. a third thermistor; 11. a fourth thermistor; 12. gold-plated tungsten wires; 13. a telescopic air duct; 14. and (4) corrosion-resistant gas hood.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a type TCD gas detector is put into to gas circuit, including corrosion-resistant inerting cell body 1, reference cavity 2 has been seted up to corrosion-resistant inerting cell body 1's inboard, reference cavity 2's interior top side is provided with first thermistor 8, one side that reference cavity 2's interior top side is close to first thermistor 8 is provided with second thermistor 9, first reference gas circuit passageway 4 has been seted up to one side that reference cavity 2 is corresponded to reference cavity 2's lateral wall top side of corrosion-resistant inerting cell body 1, second reference gas circuit passageway 6 has been seted up to the position that reference cavity 2 is corresponded to corrosion-resistant inerting cell body 1's lateral wall bottom side, the inboard fixedly connected with test cavity 3 that reference cavity 2 is close to corrosion-resistant inerting cell body 1's inboard, the interior top side of test cavity 3 is provided with third thermistor 10, one side that test cavity 3's interior top side is close to third thermistor 10 is provided with fourth thermistor 11, the top of one side that first reference And a second test gas path channel 7 is formed on one side, close to the first test gas path channel 5, of the outer side wall of the corrosion-resistant inerting tank body 1.
The first reference gas path channel 4 and the second reference gas path channel 6 are communicated with the reference cavity 2, so that gas can conveniently circulate between the first reference gas path channel 4, the second reference gas path channel 6 and the reference cavity 2; the first test air channel 5 and the second test air channel 7 are communicated with the test cavity 3, so that air can conveniently circulate among the first test air channel 5, the second test air channel 7 and the test cavity 3; the fourth thermistor 11, the first thermistor 8, the second thermistor 9 and the third thermistor 10 are all fixedly connected with gold-plated tungsten wires 12, and the four gold-plated tungsten wires 12 respectively extend to the inner sides of the reference cavity 2 and the test cavity 3, so that the gold-plated tungsten wires 12 can be fully contacted with gas, and the gas can take away the temperature of the surfaces of the gold-plated tungsten wires 12; the ports of the second reference gas path channel 6 and the second test gas path channel 7 are fixedly connected with telescopic gas guide tubes 13, so that gas can be conveniently introduced into the second reference gas path channel 6 and the second test gas path channel 7; the corrosion-resistant gas hood 14 is fixedly connected to one end, far away from the corrosion-resistant inerting tank body 1, of each of the two corrosion-resistant telescopic gas guide pipes 13, and is convenient to cooperate with the telescopic gas guide pipes 13 to guide gas into the second reference gas path channel 6 and the second test gas path channel 7.
The working principle is as follows: when a gas path built-in type TCD gas detector is used, a Wheatstone bridge is formed by a first thermistor 8, a second thermistor 9, a third thermistor 10 and a fourth thermistor 11, the first thermistor 8 and the second thermistor 9 are arranged in a reference cavity 2 of a corrosion-resistant inerting cell body 1, the third thermistor 10 and the fourth thermistor 11 are arranged in a test cavity 3 of the corrosion-resistant inerting cell body 1, a structure that the thermistor cavities needing gas diffusion contact are connected in parallel in pairs is not adopted, the thermistors are directly built in a gas flow gas path, gas is collected through a corrosion-resistant gas hood 14 and a telescopic gas guide pipe 13, and the thermistors and gold-plated tungsten wires 12 on the thermistors can be in rapid and sufficient contact with the gas in a first reference gas path channel 4, a second reference gas path channel 6, a first test gas path channel 5 and a second test gas path channel 7, make gaseous more heats of taking away, and then promote signal response speed, reference cavity 2 and the use of 3 independent single cavity techniques of test cavity make the detector under the prerequisite that does not reduce thermistor length, just can reduce the inside volume of detector, do not lose thermistor's sensitivity, make equivalent gas can produce stronger "signal" response value, have certain practicality.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.
Claims (6)
1. The utility model provides a type TCD gas detector is put into to gas circuit, includes corrosion-resistant inerting cell body (1), its characterized in that: the inner side of the corrosion-resistant inerting cell body (1) is provided with a reference cavity (2), the inner top side of the reference cavity (2) is provided with a first thermistor (8), one side, close to the first thermistor (8), of the inner top side of the reference cavity (2) is provided with a second thermistor (9), one side, corresponding to the reference cavity (2), of the top side of the outer side wall of the corrosion-resistant inerting cell body (1) is provided with a first reference gas path channel (4), the position, corresponding to the reference cavity (2), of the bottom side of the outer side wall of the corrosion-resistant inerting cell body (1) is provided with a second reference gas path channel (6), the inner side, close to the reference cavity (2), of the corrosion-resistant inerting cell body (1) is fixedly connected with a test cavity (3), the inner top side of the test cavity (3) is provided with a third thermistor (10), one side, close to the third thermistor (10), of the inner top side of the test cavity (3, the corrosion-resistant inerting cell body is characterized in that a first test gas path channel (5) is formed in the top of one side, away from a first reference gas path channel (4), of the outer side wall of the corrosion-resistant inerting cell body (1), and a second test gas path channel (7) is formed in one side, close to the first test gas path channel (5), of the outer side wall of the corrosion-resistant inerting cell body (1).
2. The TCD gas detector of claim 1, wherein: the first reference gas path channel (4) and the second reference gas path channel (6) are communicated with the reference cavity (2).
3. The TCD gas detector of claim 1, wherein: the first test air channel (5) and the second test air channel (7) are communicated with the test cavity (3).
4. The TCD gas detector of claim 1, wherein: the fourth thermistor (11), the first thermistor (8), the second thermistor (9) and the third thermistor (10) are all fixedly connected with gold-plated tungsten wires (12), and the four gold-plated tungsten wires (12) respectively extend to the inner sides of the reference cavity (2) and the test cavity (3).
5. The TCD gas detector of claim 1, wherein: and the ports of the second reference gas path channel (6) and the second test gas path channel (7) are fixedly connected with telescopic gas guide tubes (13).
6. The TCD gas detector of claim 5, wherein: and one end of each of the two corrosion-resistant telescopic air guide pipes (13) far away from the corrosion-resistant inerting tank body (1) is fixedly connected with a corrosion-resistant gas hood (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913685.XU CN213121709U (en) | 2020-05-27 | 2020-05-27 | Gas circuit embedded type TCD gas detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020913685.XU CN213121709U (en) | 2020-05-27 | 2020-05-27 | Gas circuit embedded type TCD gas detector |
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| CN213121709U true CN213121709U (en) | 2021-05-04 |
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| CN202020913685.XU Active CN213121709U (en) | 2020-05-27 | 2020-05-27 | Gas circuit embedded type TCD gas detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551704A (en) * | 2021-07-09 | 2021-10-26 | 山西辉能科技有限公司 | Transmitter for online micro water density |
| CN117434193A (en) * | 2023-12-20 | 2024-01-23 | 福建省巨颖高能新材料有限公司 | High-sensitivity TCD detector for corrosive gas |
-
2020
- 2020-05-27 CN CN202020913685.XU patent/CN213121709U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551704A (en) * | 2021-07-09 | 2021-10-26 | 山西辉能科技有限公司 | Transmitter for online micro water density |
| CN117434193A (en) * | 2023-12-20 | 2024-01-23 | 福建省巨颖高能新材料有限公司 | High-sensitivity TCD detector for corrosive gas |
| CN117434193B (en) * | 2023-12-20 | 2024-03-01 | 福建省巨颖高能新材料有限公司 | High-sensitivity TCD detector for corrosive gas |
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