CN212871941U - Cold trap for gas flow heating explanation - Google Patents
Cold trap for gas flow heating explanation Download PDFInfo
- Publication number
- CN212871941U CN212871941U CN202021273769.8U CN202021273769U CN212871941U CN 212871941 U CN212871941 U CN 212871941U CN 202021273769 U CN202021273769 U CN 202021273769U CN 212871941 U CN212871941 U CN 212871941U
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- CN
- China
- Prior art keywords
- carrier gas
- cold trap
- heat
- insulation box
- gas pipeline
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 239000012159 carrier gas Substances 0.000 claims abstract description 67
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 20
- 239000000523 sample Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000003570 air Substances 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The utility model discloses a cold trap is explained in heating of carrier gas air current, include: the carrier gas generating device comprises an insulation box, a heating rod and a carrier gas pipeline, the heating rod and the carrier gas pipeline are both arranged in the insulation box, the gas inlet end of the carrier gas pipeline is arranged outside one end of the insulation box, the main body part of the carrier gas pipeline is wound outside the heating rod, and the gas outlet end of the carrier gas pipeline is arranged outside the other end of the insulation box and communicated with the cold trap. The utility model relates to a cold trap which carries out rapid heating explanation through carrier gas airflow.
Description
Technical Field
The utility model relates to a technical field is explained in the heating of cold-trap, especially relates to a cold-trap through carrier gas air current, carries out rapid heating explanation.
Background
1. When the content of Volatile Organic Compounds (VOCs) in ambient air is analyzed, pre-concentration and analysis are carried out through a pre-treatment device, wherein the core part is a cold trap. When the dehydrated ambient air passes through the low-temperature cold trap, VOCs in the ambient air are adsorbed by the filler in the cold trap, after the enrichment is finished, the temperature of the cold trap is instantly raised, and simultaneously, carrier gas is introduced to analyze the VOCs enriched in the filler and send the VOCs to an analyzer for analysis and test.
2. The heating and analysis of the cold trap need to complete the temperature rise within a short time, and then maintain the temperature within a few minutes to ensure the complete analysis of the enriched substances. The requirements for the process are that the filler in the cold trap is uniformly heated, the temperature is rapidly increased, and the temperature is controllable.
3. At present, the common heating mode of the cold trap is that a resistance wire is wound on the periphery of the cold trap or a heating sheet is processed into a sleeve shape to embed the cold trap in the sleeve, the resistance wire generates heat after being electrified, and the cold trap is heated through heat transfer. The method has two problems, firstly, the heating mode of the resistance wire or the electric heating piece causes uneven temperature diffusion; secondly, when the heating temperature of the cold trap is tested, only the temperature of the heating wire and the actual temperature of the filler in the non-cold trap can be detected, so that the difference between the actual temperature of the cold trap and the measured temperature is caused. For the above reasons, a new heating method is required to realize temperature control of the cold trap and continuous and uniform heating of the filler.
Therefore, there is a need for a cold trap that can be used for rapid thermal interpretation by carrier gas flow.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cold trap that carries out rapid heating explanation through carrier gas air current.
In order to realize the purpose, the utility model provides a technical scheme does: there is provided a carrier gas stream heat transfer cold trap comprising: the carrier gas generating device comprises an insulation box, a heating rod and a carrier gas pipeline, the heating rod and the carrier gas pipeline are both arranged in the insulation box, the gas inlet end of the carrier gas pipeline is arranged outside one end of the insulation box, the main body part of the carrier gas pipeline is wound outside the heating rod, and the gas outlet end of the carrier gas pipeline is arranged outside the other end of the insulation box and communicated with the cold trap.
And the heat insulation material is filled in the heat insulation box.
The temperature sensor unit is characterized by further comprising a temperature sensing unit, wherein a temperature probe of the temperature sensing unit is arranged on the main body part of the carrier gas pipeline and used for detecting temperature information of the carrier gas pipeline.
The carrier gas generating device is connected with the cold trap through a heat tracing pipeline, and the heat tracing pipeline comprises from inside to outside: gas transport structure layer, heat tracing layer and heat insulating layer.
The cold trap is connected with the analyzer through the heat tracing pipeline.
Compared with the prior art, the air inlet end of the carrier gas pipeline is arranged outside one end of the heat insulation box, the main body part of the carrier gas pipeline is wound outside the heating rod, and the air outlet end of the carrier gas pipeline is arranged outside the other end of the heat insulation box and communicated with the cold trap. The utility model provides a carrier gas air current heating analytic scheme of cold trap, this scheme regard the air current as the heat carrier, and density is little, and specific heat capacity is little, has the advantage of realizing the rapid heating.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
Figure 1 is a schematic diagram illustrating one embodiment of a cold trap with heating of the carrier gas stream according to the present invention.
Fig. 2 is a schematic sectional view of the heat trace line.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout. As described above, as shown in fig. 1, the present invention provides a carrier gas flow heated explication cold trap 100, comprising: the carrier gas generating device 10 comprises an insulation box 1, a heating rod 3 and a carrier gas pipeline 6, wherein the heating rod 3 and the carrier gas pipeline 6 are both arranged in the insulation box 1, the gas inlet end of the carrier gas pipeline 6 is arranged outside one end of the insulation box 1, the main body part of the carrier gas pipeline 6 is wound outside the heating rod 3, and the gas outlet end of the carrier gas pipeline 6 is arranged outside the other end of the insulation box 1 and communicated with the cold trap 20.
Specifically, the main body of the carrier gas pipe 6 is tightly wound around the outer wall of the heating rod 3, and the main body of the carrier gas pipe 6 is a stainless steel pipe or a copper pipe, which has the advantages of excellent heat conduction performance, strong ductility, and easy shape change according to actual needs, and can be tightly wound around the outer wall of the heating rod 3. Moreover, since the outer wall of the entire heating rod 3 is surrounded by the main body of the carrier gas duct 6, the heat generated by the heating rod 3 can be conducted to the carrier gas duct 6 as much as possible, and the waste of heat can be effectively prevented. Therefore, the utility model discloses carrier gas pipeline 6 with the 3 complex structural feature of heating rod have simple structure, and heat transfer is fast, and calorific loss is little, the easy characteristics of accuse temperature.
It should be understood that the gas inlet end of the carrier gas pipeline 6 is arranged outside one end of the heat insulation box 1, the gas entering from the gas inlet end of the carrier gas pipeline 6 is an external normal temperature gas, and an electromagnetic valve 4 is further arranged, wherein the electromagnetic valve 4 is used for opening or closing the gas inlet end of the carrier gas pipeline 6.
Referring to the embodiment shown in fig. 1, the inside of the incubator 1 is filled with an insulating material 2.
In this embodiment, the heat insulation box 1 is generally in a rectangular parallelepiped, square or cylindrical structure with a hollow interior, the heating rod 3 is disposed at the center of the interior of the heat insulation box 1, and the heat insulation material 2 is filled in the heat insulation box 1, so that heat exchange between the heat insulation box 1 and the external environment can be reduced as much as possible.
In one embodiment, referring to fig. 1, the carrier gas supply device further includes a temperature sensing unit 7, and a temperature probe of the temperature sensing unit 7 is disposed on the main body portion of the carrier gas pipeline 6, and is used for detecting temperature information of the carrier gas pipeline 6. Specifically, the temperature probe of the temperature sensing means 7 is provided in a gap portion between the main body portion of the carrier gas duct 6 and the heating rod 3, and the temperature sensing means 7 measures temperature information of the gap portion between the main body portion of the carrier gas duct 6 and the heating rod 3, and adjusts the heating power of the heating rod based on the temperature information of the gap portion. In one embodiment, referring to fig. 1 and 2, the carrier gas generator 10 is connected to the cold trap 20 through a heat trace line 8, and the heat trace line 8 includes from inside to outside: a gas transmission structure layer 11, a heat tracing layer 12 and a heat insulation layer 13. The gas conveying structure layer 11 is located inside and used for conveying heat carrier gas, the heat tracing layer 12 is a structure layer capable of generating heat, in order to prevent the temperature of the heat carrier gas inside the gas conveying structure layer 11 from being reduced, the gas conveying structure layer 11 is subjected to heat tracing through the heat tracing layer 12, the heat insulation layer 13 is arranged outside the heat tracing layer 12, the heat tracing effect of the heat tracing structure layer 12 is consolidated, and heat exchange between the heat of the heat tracing layer 12 and the outside is reduced as much as possible.
In one embodiment, the cold trap 20 and analyzer 30 are connected by the heat trace line 8. The purpose of this arrangement is consistent with the purpose of connecting the carrier gas generator 10 and the cold trap 20 via the heat tracing line 8, and also to reduce the heat exchange between the hot carrier gas and the outside, thereby preventing the temperature of the hot carrier gas from being lowered.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (5)
1. A carrier gas stream heat rejection cold trap, comprising: the carrier gas generating device comprises an insulation box, a heating rod and a carrier gas pipeline, the heating rod and the carrier gas pipeline are both arranged in the insulation box, the gas inlet end of the carrier gas pipeline is arranged outside one end of the insulation box, the main body part of the carrier gas pipeline is wound outside the heating rod, and the gas outlet end of the carrier gas pipeline is arranged outside the other end of the insulation box and communicated with the cold trap.
2. The carrier gas stream heat transfer cold trap of claim 1, wherein the interior of said incubator is filled with an insulating material.
3. The carrier gas flow heat interpretation cold trap of claim 1, further comprising a temperature sensing unit, a temperature probe of said temperature sensing unit being disposed on a body portion of said carrier gas conduit for detecting temperature information of said carrier gas conduit.
4. The carrier gas flow heat transfer cold trap of claim 1, wherein said carrier gas generating means is connected to said cold trap by heat trace lines comprising from inside to outside: gas transport structure layer, heat tracing layer and heat insulating layer.
5. The carrier gas flow heat interpretation cold trap of claim 4, wherein said cold trap is connected to an analyzer by said heat trace line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021273769.8U CN212871941U (en) | 2020-07-03 | 2020-07-03 | Cold trap for gas flow heating explanation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021273769.8U CN212871941U (en) | 2020-07-03 | 2020-07-03 | Cold trap for gas flow heating explanation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212871941U true CN212871941U (en) | 2021-04-02 |
Family
ID=75212978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021273769.8U Active CN212871941U (en) | 2020-07-03 | 2020-07-03 | Cold trap for gas flow heating explanation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212871941U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114392580A (en) * | 2022-03-24 | 2022-04-26 | 广东盈峰科技有限公司 | Cold trap device |
| CN114887683A (en) * | 2022-03-22 | 2022-08-12 | 碧兴物联科技(深圳)股份有限公司 | Small-size cold-trap heating system |
-
2020
- 2020-07-03 CN CN202021273769.8U patent/CN212871941U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887683A (en) * | 2022-03-22 | 2022-08-12 | 碧兴物联科技(深圳)股份有限公司 | Small-size cold-trap heating system |
| CN114392580A (en) * | 2022-03-24 | 2022-04-26 | 广东盈峰科技有限公司 | Cold trap device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231007 Address after: Room 599 Yuanchuang Road, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province, 215332 Patentee after: Jiangsu Suli Environmental Instrument Co.,Ltd. Address before: 215332 second floor, building B7 and 8, No.15 Jinyang Road, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Jiangsu National Technology Instrument Co.,Ltd. |