CN111077008A - Low-temperature enrichment and thermal desorption device - Google Patents
Low-temperature enrichment and thermal desorption device Download PDFInfo
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- CN111077008A CN111077008A CN202010060251.4A CN202010060251A CN111077008A CN 111077008 A CN111077008 A CN 111077008A CN 202010060251 A CN202010060251 A CN 202010060251A CN 111077008 A CN111077008 A CN 111077008A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/405—Concentrating samples by adsorption or absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
The invention relates to the technical field of thermal desorption equipment, and provides a low-temperature enrichment and thermal desorption device which comprises a device body, wherein the device body comprises a refrigeration unit, a capture unit and a water removal unit are respectively arranged in the refrigeration unit, and the capture unit and the water removal unit are respectively and electrically connected with a control unit. The refrigeration unit in the technical scheme realizes low-temperature enrichment and improves the trapping efficiency of the trapping unit. The water removal unit increases the water removal efficiency in the low-temperature enrichment process and prevents water vapor from entering the trapping unit. The trapping unit has high temperature rise rate, can obtain an ideal peak shape, can directly measure the temperature of the trapping unit by the control unit, and has no error in the temperature measurement of the trapping unit.
Description
Technical Field
The invention relates to the technical field of thermal desorption equipment, in particular to a low-temperature enrichment and thermal desorption device.
Background
An enrichment sampling method is a common method for concentrating a gas sample, and is mostly used for enriching the gas sample and then desorbing and injecting the sample to obtain higher analysis efficiency and narrower peak shape in sample pretreatment equipment such as a thermal desorption instrument, a purging and trapping instrument and the like.
Firstly, in the prior art, normal temperature enrichment is mostly adopted, but the normal temperature enrichment is low, and boiling point substances are easy to penetrate.
Secondly, the low temperature enrichment process in the prior art has low water removal efficiency, even has no water removal function, so that the filler of the capture unit can be damaged by low temperature condensation after water vapor enters the capture unit.
Finally, in the prior art, the trapping unit is desorbed and heated, a heating wire is mostly wound on the trapping unit, the heating rate is slow, and the obtained peak shape is not ideal. Moreover, the temperature of the trapping unit is not directly measured, and errors exist in the temperature measurement of the trapping unit.
How to effectively solve the technical problems is a problem to be solved by the technical personnel in the field at present.
Disclosure of Invention
In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides a low temperature concentration and thermal desorption apparatus.
The low-temperature enrichment and thermal desorption device comprises a device body, wherein the device body comprises a refrigeration unit, and a capture unit and a dewatering unit are respectively arranged in the refrigeration unit.
The trapping unit and the dewatering unit are respectively and electrically connected with a control unit.
Optionally, the refrigeration unit includes a cold chamber, and a cold chamber is provided in the cold chamber.
Keep away from the surface of cold chamber side the cold chamber body be connected with the refrigeration piece, with cold chamber body axial direction is parallel two tip of refrigeration piece are connected with the filling piece respectively.
Keep away from the surface of cold cavity side the surface of refrigeration piece and filler is connected with first radiating piece, keep away from the refrigeration piece side the surface of first radiating piece is connected with second radiating piece.
The two axial end parts of the cold cavity body are respectively provided with a first cavity cover and a second cavity cover, and a first through hole and a second through hole are respectively arranged on the first cavity cover and the second cavity cover.
Optionally, a trap unit passes through the first through hole on the first chamber cover and the second chamber cover.
And a water removal unit penetrates through the second through holes in the first cavity cover and the second cavity cover.
Optionally, two ends of the trapping unit respectively penetrate through the first cavity cover and the second cavity cover, and two ends of the water removing unit also respectively penetrate through the first cavity cover and the second cavity cover.
Optionally, the end of the trapping unit penetrating through the first cavity cover is provided with a first buckle, and the end of the trapping unit penetrating through the second cavity cover is provided with a second buckle.
The end part of the water removing unit penetrating out of the first cavity cover is provided with a third buckle, and the end part of the water removing unit penetrating out of the second cavity cover is provided with a fourth buckle.
Optionally, a temperature acquisition device extending towards the inside of the cold chamber is arranged on the second chamber cover.
Optionally, the first buckle and the third buckle are respectively connected with the control unit through a connecting wire.
The trapping unit and the temperature acquisition device are also respectively connected with the control unit through connecting wires.
The second buckle and the fourth buckle are connected through a connecting line.
Optionally, a transformer is further connected between the first buckle, the third buckle and the control unit.
Optionally, the trapping unit is still an adsorption layer, a heat preservation layer and a protection layer from inside to outside.
And the protective layer is provided with a thermocouple connected with the control unit.
Optionally, the trapping unit is a trapping pipe, and a cavity is arranged inside the trapping pipe.
The water removal unit is a water removal pipe, and a cavity is also arranged in the water removal pipe.
The refrigeration unit realizes low-temperature enrichment and improves the trapping efficiency of the trapping unit. The water removal unit increases the water removal efficiency in the low-temperature enrichment process and prevents water vapor from entering the trapping unit. The trapping unit has high temperature rise rate, can obtain an ideal peak shape, can directly measure the temperature of the trapping unit by the control unit, and has no error in the temperature measurement of the trapping unit.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a schematic structural diagram of a device body provided in the present invention;
FIG. 3 is a schematic view of the structure of the trap unit according to the present invention.
Reference numerals:
1. a device body; 11. a cold chamber; 12. a filling member; 13. a refrigeration plate; 14. a first heat sink; 15. a second heat sink; 16. a cold chamber; 17. a second chamber cover; 171. a temperature acquisition device; 18. a first chamber cover;
2. a water removal unit; 21. a third buckle; 22. a fourth buckle;
3. a trapping unit; 31. a first buckle; 32. a second buckle; 33. a heat-insulating layer; 34. a thermocouple; 35. an adsorption layer; 36. a protective layer;
4. a control unit;
5. a transformer;
6. and connecting the wires.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The following examples are intended to illustrate the invention, but not to limit it. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "connected" and "coupled" are used broadly and may include, for example, a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In an embodiment of the present invention, as shown in fig. 1, a low temperature enrichment and thermal desorption apparatus includes an apparatus body 1, the apparatus body 1 includes a refrigeration unit, and a capture unit 3 and a water removal unit 2 are respectively disposed in the refrigeration unit.
The control unit 4 is electrically connected to the trap unit 3 and the water removal unit 2, respectively.
In this embodiment, the refrigeration unit realizes low-temperature enrichment, and the capture efficiency of the capture unit 3 is improved. The water removal unit 2 increases the water removal efficiency in the low-temperature enrichment process and prevents water vapor from entering the capture unit 3. The temperature rise rate of the trap unit 3 of the present invention is high, an ideal peak shape can be obtained, the temperature of the trap unit 3 can be directly measured by the control unit 4, and there is no error in the measurement of the temperature of the trap unit 3.
In another embodiment of the present invention, with reference to fig. 1 and 3, the refrigeration unit includes a cold chamber 11, and a cold chamber 16 is disposed in the cold chamber 11.
The surface of the cold cavity 11 far away from the cold cavity 16 is connected with a refrigerating sheet 13, and two end parts of the refrigerating sheet 13 which are parallel to the axial direction of the cold cavity 11 are respectively connected with a filling part 12.
The surface of the refrigeration sheet 13 and the surface of the filling member 12 which are far away from the side of the cold chamber 11 are connected with a first heat dissipation member 14, and the surface of the first heat dissipation member 14 which is far away from the side of the refrigeration sheet 13 is connected with a second heat dissipation member 15.
The two axial ends of the cold cavity 11 are respectively provided with a first cavity cover 18 and a second cavity cover 17, and the first cavity cover 18 and the second cavity cover 17 are respectively provided with a first through hole and a second through hole.
In this embodiment, the cold chamber 16 is in a low temperature state during operation.
The refrigeration input, the refrigeration temperature and the refrigeration time of the refrigeration sheet 13 are controlled by the control unit 4 according to the actual working requirements. The control unit 4 is a control system, and since the control system is not the inventive content of the present invention and is only required to adopt the prior art, the detailed description of the control system will not be provided.
The filling member 12 is internally provided with a filling material, and the filling member 12 can realize the functions of heat preservation and air isolation. Wherein, the filling material adopts the material that can realize heat preservation and isolated air among the prior art.
The first heat sink 14 includes a heat sink metal sheet, a heat sink wire, a heat sink cloth, and the like. The heat of the first heat sink 14 may come from the energization of the device body 1, and may also come from the control unit 4.
The peripheries of the first through hole and the second through hole are provided with heat insulation sheets, the heat insulation sheets can realize the support of the first cavity cover 18 and the second cavity cover 17 on one hand, and can prevent the trapping unit 3 with high temperature from damaging the first cavity cover 18 and the second cavity cover 17 on the other hand.
A heat radiation fan is arranged in the second heat radiation member 15 to realize the heat radiation function.
In another embodiment of the present invention, as shown in FIG. 1, the trap unit 3 is inserted into the first through holes of the first chamber cover 18 and the second chamber cover 17.
The water removal unit 2 passes through the second through holes of the first chamber cover 18 and the second chamber cover 17.
In the present embodiment, the trap unit 3 performs an enriching action, and the water removal unit 2 performs a water removal action.
In another embodiment of the present invention, as shown in fig. 1, two ends of the trap unit 3 respectively penetrate through the first chamber cover 18 and the second chamber cover 17, and two ends of the water removal unit 2 also respectively penetrate through the first chamber cover 18 and the second chamber cover 17.
In the present embodiment, the first chamber cover 18 and the second chamber cover 17 achieve air isolation and heat preservation.
In still another embodiment of the present invention, as shown in fig. 1, a first snap 31 is provided at the end of the trap unit 3 that penetrates out of the first chamber cover 18, and a second snap 32 is provided at the end of the trap unit 3 that penetrates out of the second chamber cover 17.
The end of the dewatering unit 2 penetrating out of the first cavity cover 18 is provided with a third buckle 21, and the end of the dewatering unit 2 penetrating out of the second cavity cover 17 is provided with a fourth buckle 22.
In the present embodiment, the first buckle 31, the second buckle 32, the third buckle 21 and the fourth buckle 22 can realize the clamping of the trapping unit 3 and the water removing unit 2 on the one hand, and can realize the connection of the auxiliary trapping unit 3 and the water removing unit 2 with the control unit 4 on the other hand.
In another embodiment of the present invention, referring to fig. 1 and 3, the second cover 17 is provided with a temperature collecting device 171 extending toward the inside of the cold chamber 16.
In the present embodiment, the temperature acquisition device 171 is a platinum resistor, or other low temperature resistant resistor known in the art.
The platinum resistor is connected to the control unit 4 and collects the temperature of the trap unit 3 in the cold chamber 16.
In another embodiment of the present invention, the first latch 31 and the third latch 21 are respectively connected to the control unit 4 through the connecting wires 6.
The trap unit 3 and the temperature collection device 171 are also connected to the control unit 4 via connection lines 6, respectively.
The second buckle 32 and the fourth buckle 22 are connected through a connecting line 6.
In the present embodiment, the first buckle 31, the second buckle 32, the third buckle 21, the fourth buckle 22, the capturing unit 3, and the temperature collecting device 171 can be connected to the control unit 4 through the connecting wire 6, or can be electrically connected to the control unit 4 through wireless transmission. Wherein, the connecting wire 6 is a wire in the prior art. Since the wireless transmission is not the inventive content of the present invention, it is sufficient to adopt the prior art, and therefore, the wireless transmission will not be described in detail.
In another embodiment of the present invention, as shown in fig. 1, a transformer 5 is further connected between the first latch 31, the third latch 21 and the control unit 4.
In the present embodiment, the transformer 5 can be adapted to each area voltage and current situation.
In another embodiment of the present invention, as shown in fig. 2, the capturing unit 3 is still an absorption layer 35, a heat preservation layer 33, and a protection layer 36 from inside to outside.
The protective layer 36 is provided with a thermocouple 34 connected to the control unit 4.
In the present embodiment, the adsorption layer 35 is an adsorption material, which may be a single material or a plurality of materials separated by glass wool. The insulating layer 33 is made of glass wool. The protective layer 36 is a stainless steel mesh. The protective layer 36 is matched with the insulating layer 33, so that the adsorbing material is prevented from being blown away by carrier gas, and the adsorbing material is prevented from polluting the gas path.
Further, the connection line 6 is connected to the trap unit 3 by a thermocouple 34.
In a further embodiment of the invention, the trap unit 3 is a trap tube, inside of which a cavity is arranged.
The water removing unit 2 is a water removing pipe, and a cavity is also arranged inside the water removing pipe.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments. Those of ordinary skill in the art will understand that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit of the present invention.
Claims (10)
1. A low-temperature enrichment and thermal desorption device comprises a device body and is characterized in that,
the device body comprises a refrigeration unit, and a trapping unit and a dewatering unit are respectively arranged in the refrigeration unit;
the trapping unit and the dewatering unit are respectively and electrically connected with a control unit.
2. The cryogenic concentration and thermal desorption apparatus of claim 1,
the refrigeration unit comprises a cold cavity body, and a cold cavity is arranged in the cold cavity body;
the surface of the cold cavity far away from the cold cavity side is connected with a refrigerating sheet, and two end parts of the refrigerating sheet axially parallel to the cold cavity are respectively connected with a filling piece;
the surface of the refrigeration sheet far away from the side of the cold cavity and the surface of the filler are connected with a first heat dissipation piece, and the surface of the first heat dissipation piece far away from the side of the refrigeration sheet is connected with a second heat dissipation piece;
the two axial end parts of the cold cavity body are respectively provided with a first cavity cover and a second cavity cover, and a first through hole and a second through hole are respectively arranged on the first cavity cover and the second cavity cover.
3. The cryogenic concentration and thermal desorption apparatus of claim 2,
a trapping unit penetrates through the first through holes in the first chamber cover and the second chamber cover;
and a water removal unit penetrates through the second through holes in the first cavity cover and the second cavity cover.
4. The cryogenic concentration and thermal desorption apparatus of claim 3,
two ends of the trapping unit respectively penetrate through the first cavity cover and the second cavity cover, and two ends of the dewatering unit also respectively penetrate through the first cavity cover and the second cavity cover.
5. The cryogenic concentration and thermal desorption apparatus of claim 4,
a first buckle is arranged at the end part of the trapping unit penetrating out of the first cavity cover, and a second buckle is arranged at the end part of the trapping unit penetrating out of the second cavity cover;
the end part of the water removing unit penetrating out of the first cavity cover is provided with a third buckle, and the end part of the water removing unit penetrating out of the second cavity cover is provided with a fourth buckle.
6. The cryogenic concentration and thermal desorption device of claim 2 wherein the second chamber cover is provided with a temperature collection device extending into the cold chamber.
7. The cryogenic concentration and thermal desorption apparatus of claim 5,
the first buckle and the third buckle are respectively connected with the control unit through connecting wires;
the trapping unit and the temperature acquisition device are also respectively connected with the control unit through connecting wires;
the second buckle and the fourth buckle are connected through a connecting line.
8. The cryogenic concentration and thermal desorption apparatus of claim 7 wherein a transformer is further connected between the first and third latches and the control unit.
9. The cryogenic concentration and thermal desorption apparatus of claim 1,
the trapping unit is still provided with an adsorption layer, a heat preservation layer and a protective layer from inside to outside;
and the protective layer is provided with a thermocouple connected with the control unit.
10. The cryogenic concentration and thermal desorption apparatus of claim 1,
the trapping unit is a trapping pipe, and a cavity is arranged in the trapping pipe;
the water removal unit is a water removal pipe, and a cavity is also arranged in the water removal pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060251.4A CN111077008A (en) | 2020-01-19 | 2020-01-19 | Low-temperature enrichment and thermal desorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010060251.4A CN111077008A (en) | 2020-01-19 | 2020-01-19 | Low-temperature enrichment and thermal desorption device |
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| Publication Number | Publication Date |
|---|---|
| CN111077008A true CN111077008A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010060251.4A Pending CN111077008A (en) | 2020-01-19 | 2020-01-19 | Low-temperature enrichment and thermal desorption device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124567A (en) * | 2023-02-03 | 2023-05-16 | 北京鹏宇昌亚环保科技有限公司 | Volatile organic compound enrichment pretreatment device |
-
2020
- 2020-01-19 CN CN202010060251.4A patent/CN111077008A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116124567A (en) * | 2023-02-03 | 2023-05-16 | 北京鹏宇昌亚环保科技有限公司 | Volatile organic compound enrichment pretreatment device |
| CN116124567B (en) * | 2023-02-03 | 2023-06-16 | 北京鹏宇昌亚环保科技有限公司 | Volatile organic compound enrichment pretreatment device |
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