CN215811920U - Gas trapping device - Google Patents
Gas trapping device Download PDFInfo
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- CN215811920U CN215811920U CN202120686526.5U CN202120686526U CN215811920U CN 215811920 U CN215811920 U CN 215811920U CN 202120686526 U CN202120686526 U CN 202120686526U CN 215811920 U CN215811920 U CN 215811920U
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Abstract
The utility model relates to the technical field of gas analysis, in particular to a gas trapping device which comprises a first temperature guide plate, a second temperature guide plate, a trapping trap, a thermocouple, a heating device, a helium refrigerator and a heat-preservation and water-proof device. The trap comprises two straight pipe parts and an elbow part connecting the straight pipe parts and the elbow part, wherein the elbow part is provided with an insulating layer, a temperature probe of the thermocouple is positioned in the insulating layer and clings to the elbow part, and the heating part of the heating device is arranged on the straight pipe part. One side of the first temperature guide plate is arranged on a cold head of the helium refrigerator, and the other side of the first temperature guide plate is matched with the second temperature guide plate to clamp the bent pipe part of the trap in the middle. The heat-insulating and water-resisting device covers the cold head, the first heat-conducting plate, the second heat-conducting plate, the bent pipe part of the trap, the heating part of the heating device and at least part of the straight pipe part to form a closed structure. In the trapping process of the device, a vacuum system is not needed, and the integration level of the device is improved.
Description
Technical Field
The utility model relates to the technical field of gas analysis, in particular to a gas trapping device.
Background
In the scientific research field and the environmental monitoring process, trace components in gas can be detected after condensation and preconcentration, but the traditional gas analysis equipment can be condensed after being cooled to-200 ℃. Therefore, when the trace gas is detected by using the conventional gas analysis equipment, a vacuum device must be set up to protect the components needing cooling so as to ensure the normal operation of the system. However, the vacuum apparatus is cumbersome to install, and an additional vacuum pump is required to provide a stable vacuum environment during operation, which is not suitable for use in small-sized and mobile analysis apparatuses.
SUMMERY OF THE UTILITY MODEL
Based on this, the present invention provides a gas trapping device. The gas trapping device can trap trace gas at ultralow temperature without arranging a vacuum system.
The utility model provides a gas trapping device, which comprises a first temperature guide plate, a second temperature guide plate, a trapping trap, a thermocouple, a heating device, a helium refrigerator and a heat-preservation water-resisting device, wherein the first temperature guide plate is arranged on the first side of the trapping trap;
the trap comprises two straight pipe parts and an elbow part connected with the straight pipe parts, the elbow part is provided with an insulating layer, a temperature probe of the thermocouple is positioned in the insulating layer and clings to the elbow part, and the heating part of the heating device is arranged on the straight pipe part;
one surface of the first temperature guide plate is arranged on a cold head of the helium refrigerator, and the other surface of the first temperature guide plate is matched with the second temperature guide plate to clamp the bent pipe part of the trap in the middle;
the heat-preservation and water-insulation device covers the cold head, the first heat-conducting plate, the second heat-conducting plate, the bent pipe part of the trap, the heating part of the heating device and at least part of the straight pipe part to form a closed structure.
In some embodiments, the heat-insulating and water-proof device is connected with the helium refrigerator through a flange.
In some embodiments, the trap is L-shaped, U-shaped, or V-shaped with the elbow portion at the corner.
In some embodiments, the heating portion of the heating device is fitted over the straight tube portion.
In some embodiments, the portion of the heating device where the heating portion contacts the straight tube portion of the trap is covered with an insulating layer.
In some embodiments, the temperature probe of the thermocouple is closely attached to the middle part of the trap bent pipe part.
In some embodiments, the first temperature guide plate and the second temperature guide plate are connected by screws.
In some embodiments, a groove is formed on one surface of the first temperature guide plate and/or the second temperature guide plate, which is provided with the trap elbow part, and the groove is used for fixing the trap elbow part and the thermocouple.
In some embodiments, the first temperature conducting plate and the second temperature conducting plate are made of copper.
In some embodiments, the material of the thermal insulation and water isolation device is epichlorohydrin rubber, chlorohydrin rubber or cold rolled steel.
Has the advantages that:
according to the gas trapping device provided by the utility model, the cold head of the helium refrigerator is directly connected with the heat conducting plate, and the heating device is arranged on the trapping trap, so that the temperature can be rapidly reduced and increased, and the temperature increasing and reducing efficiency of the device is improved. And moreover, the helium refrigerator is used, so that the traditional halohydrocarbon refrigerant is abandoned, and the monitoring on halohydrocarbon cannot be interfered. The heat-insulating and water-proof device is further additionally arranged to isolate the components such as the trap and the heat conducting plate from the outside, so that on one hand, the influence of the outside environment on the components in the cooling process is greatly reduced, and the substances such as water in the air are prevented from being condensed on the components; on the other hand, the heat exchange between the whole trapping system and the outside is blocked, the heating efficiency is improved, and the energy consumption is reduced. In addition, a vacuum system is not needed in the process of trapping by using the device, so that the integration level of the device is improved, and the device has high portability. And the device is simple and convenient to install and is favorable for later maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of the structure of a gas capture device in accordance with one embodiment of the present invention;
in the figure: 1-a first heat conducting plate; 2-a second heat conducting plate; 3-a trap; 4-a thermocouple; 5-a heating device; 6-helium refrigerator; 7-heat preservation and water insulation device; 8-a flange; 611-a first threaded hole; 11-a second threaded hole; 12-a third threaded hole; 21-a fourth threaded hole; 31-bending the tube part; 32-a straight tube portion; 61-Cold head.
Detailed Description
Reference will now be made in detail to embodiments of the utility model, one or more examples of which are described below. Each example is provided by way of explanation, not limitation, of the utility model. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the utility model. For instance, features illustrated or described as part of one embodiment, can be used on another embodiment to yield a still further embodiment.
It is therefore intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. Other objects, features and aspects of the present invention are disclosed in or are apparent from the following detailed description. It is to be understood by one of ordinary skill in the art that the present discussion is a description of exemplary embodiments only, and is not intended as limiting the broader aspects of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the patent of the utility model, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Terms and definitions
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The terms "length," "width," "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "radial," "axial," "longitudinal," "transverse," "circumferential," and the like, as indicating directions or positional relationships, are based on the directions or positional relationships indicated in the drawings for convenience of description only and are not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the utility model.
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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The utility model provides a gas trapping device, which comprises a first temperature guide plate, a second temperature guide plate, a trapping trap, a thermocouple, a heating device, a helium refrigerator and a heat-preservation water-resisting device, wherein the first temperature guide plate is arranged on the first side of the trapping trap;
the trap comprises two straight pipe parts and an elbow part connected with the straight pipe parts, the elbow part is provided with an insulating layer, a temperature probe of a thermocouple is positioned in the insulating layer and clings to the elbow part, and the heating part of a heating device is arranged on the straight pipe parts;
one surface of the first temperature guide plate is arranged on a cold head of the helium refrigerator, and the other surface of the first temperature guide plate is matched with the second temperature guide plate to clamp the bent pipe part of the trap in the middle;
the heat-insulating and water-resisting device covers the cold head, the first heat-conducting plate, the second heat-conducting plate, the bent pipe part of the trap, the heating part of the heating device and at least part of the straight pipe part to form a closed structure.
The gas trapping device can rapidly cool and heat through directly connecting the cold head of the helium refrigerator with the heat conducting plate and installing the heating device on the trapping trap, thereby improving the heating and cooling efficiency of the device. The heat-insulating and water-proof device is further additionally arranged to isolate the components such as the trap and the heat conducting plate from the outside, so that on one hand, the influence of the outside environment on the components in the cooling process is greatly reduced, and the substances such as water in the air are prevented from being condensed on the components; on the other hand, the heat exchange between the whole trapping system and the outside is blocked, the heating efficiency is improved, and the energy consumption is reduced. In addition, a vacuum system is not needed in the process of trapping by using the device, so that the integration level of the device is improved, and the device has high portability. And the device is simple and convenient to install and is favorable for later maintenance.
By arranging the insulating layer in the bent pipe part, the trapping trap can be prevented from generating electric leakage in the heating process.
In some embodiments, the insulating layer may be applied to the bent pipe portion of the trap in the form of a coating, or may be a separately formed insulating layer that is sleeved on the bent pipe portion of the trap. Preferably, the insulating layer is applied to the trap elbow in the form of a coating.
The insulating layer is made of high molecular polymer, such as polytetrafluoroethylene.
In some embodiments, the heat-insulating and water-proof device is connected with the helium refrigerator through a flange. The flange penetrates through a cold head of the helium refrigerator and is arranged at a position close to a helium refrigerator body. Wherein, the material of the flange can be cast iron, carbon steel, alloy steel or stainless steel. Preferably, the material of the flange is carbon steel.
The heat preservation water-proof device can be any shape, for example can be square, cuboid, cylinder, wherein, the cylinder can be cylinder, prismatic preferred regular prism, for example regular triangular prism, regular pentagonal prism, regular hexagonal prism, regular heptaprismatic and regular octaprismatic etc.. More preferably, the heat-insulating and water-insulating device is a cube or a cuboid.
The heat-insulating and water-resisting device is made of epichlorohydrin rubber, chlorohydrin rubber or cold-rolled steel.
In some embodiments, the parts of the thermal insulating and water-blocking device, which are in contact with the thermocouple, the trap straight tube portion and the heating device, are sealed by polyetheretherketone resin.
In some embodiments, the trap is L-shaped, U-shaped, or V-shaped with the elbow portion at the corner. Preferably, the trap is L-shaped.
In some embodiments, the heating portion of the heating device is fitted over the straight tube portion. Specifically, the heating portion of the heating device is attached to the straight tube portion of the trap in a wound manner. The part of the heating device, which is contacted with the straight pipe part of the trap, is wrapped with an insulating layer.
In some embodiments, the temperature probe of the thermocouple is closely attached to the middle of the trap elbow.
In some embodiments, the cold head of the helium refrigerator, the first temperature guide plate and the second temperature guide plate are provided with threaded holes, and the threaded holes are used for installing screws. The cold head of the helium refrigerator is connected with the first temperature guide plate through screws, and the first temperature guide plate is connected with the second temperature guide plate through screws.
The number of the threaded holes in the cold head of the helium refrigerator can be 1-5, and preferably 4. Besides the threaded holes corresponding to the cold heads of the helium refrigerators, 2-4 threaded holes are formed in the edges of the first temperature guide plate and the second temperature guide plate.
In some embodiments, a groove is formed on one surface of the first temperature guide plate and/or the second temperature guide plate, which is provided with the trap elbow part, wherein the groove is used for fixing the trap elbow part and the thermocouple. Preferably, the first temperature guide plate and the second temperature guide plate are provided with grooves on one surface provided with the trap bent pipe part.
In some embodiments, the first temperature conducting plate and the second temperature conducting plate are made of metal. The metal can be a single metal, or a metal alloy consisting of a plurality of metals, stainless steel and the like. The metal has good temperature and heat conduction, thereby improving the heat conduction efficiency and ensuring the high efficiency of refrigeration. Preferably, the first temperature conducting plate and the second temperature conducting plate are made of copper, aluminum, iron, or an alloy of the foregoing metals, or stainless steel. Further, the first temperature conducting plate and the second temperature conducting plate are made of copper, and further the first temperature conducting plate and the second temperature conducting plate are made of pure copper with the purity of 99%.
The first temperature guide plate and the second temperature guide plate can be regular or irregular polygons or circles. Preferably, the first temperature conducting plate and the second temperature conducting plate are in the shape of a regular polygon or a circle, wherein the regular polygon can be a square, a rectangle, a regular pentagon, a regular hexagon and the like. More preferably, the first temperature-conducting plate and the second temperature-conducting plate are square in shape.
The gas trap apparatus of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the gas trap apparatus of the present invention includes a first temperature guide plate 1, a second temperature guide plate 2, a trap 3, a thermocouple 4, a heating device 5, a helium refrigerator 6, and a heat-insulating and water-blocking device 7. Wherein the trap 3 comprises two straight tube portions 32 and an elbow portion 31 connecting them, the elbow portion 31 being provided with an insulating layer. The temperature probe of the thermocouple 4 is positioned in the insulating layer and clings to the bent pipe part 31, and the heating part of the heating device 5 is arranged on the straight pipe part 32. One surface of the first temperature guide plate 1 is arranged on a cold head 61 of the helium refrigerator 6, and the other surface of the first temperature guide plate is matched with the second temperature guide plate 2 to clamp the bent pipe part 31 of the trap 3 in the middle. The heat-insulating and water-resisting device 7 covers the cold head 61, the first heat-conducting plate 1, the second heat-conducting plate 2, the bent pipe part 31 of the trap 3, the heating part of the heating device 5 and at least part of the straight pipe part 32 to form a closed structure.
The heat-preservation water-resisting device 7 is connected with the helium refrigerator 6 through the flange 8, a first threaded hole 611 is formed in a cold head 61 of the helium refrigerator 6, a second threaded hole 11 and a third threaded hole 12 are formed in the first temperature guide plate 1, a fourth threaded hole 21 is formed in the second temperature guide plate 2, the first threaded hole 611 corresponds to the third threaded hole 12 in position, and the second threaded hole 11 corresponds to the fourth threaded hole 21 in position. The bent pipe part 31 of the trap 3 is wrapped with an insulating layer.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A gas trapping device is characterized by comprising a first temperature guide plate, a second temperature guide plate, a trapping trap, a thermocouple, a heating device, a helium refrigerator and a heat-preservation water-resisting device;
the trap comprises two straight pipe parts and an elbow part connected with the straight pipe parts, the elbow part is provided with an insulating layer, a temperature probe of the thermocouple is positioned in the insulating layer and clings to the elbow part, and the heating part of the heating device is arranged on the straight pipe part;
one surface of the first temperature guide plate is arranged on a cold head of the helium refrigerator, and the other surface of the first temperature guide plate is matched with the second temperature guide plate to clamp the bent pipe part of the trap in the middle;
the heat-preservation and water-insulation device covers the cold head, the first heat-conducting plate, the second heat-conducting plate, the bent pipe part of the trap, the heating part of the heating device and at least part of the straight pipe part to form a closed structure.
2. The gas capture device of claim 1, wherein the thermal insulation and water isolation device is flanged to the helium refrigerator.
3. The gas capture device of claim 1, wherein the trap is L-shaped, U-shaped, or V-shaped, with elbow portions at corners.
4. The gas trap device according to any one of claims 1 to 3, wherein the straight tube portion is fitted over a heating portion of the heating device.
5. The gas trap device according to claim 4, wherein a portion of the heating unit, which is in contact with the straight tube portion of the trap, is covered with an insulating layer.
6. The gas trap apparatus according to claim 1, wherein the temperature probe of the thermocouple is closely attached to the middle portion of the trap elbow.
7. The gas trapping device according to claim 1, wherein the first temperature conduction plate and the second temperature conduction plate are connected by a screw.
8. The gas trapping device according to claim 1, wherein a groove is provided on a surface of the first temperature guide plate and/or the second temperature guide plate on which the trap elbow part is mounted, and the groove is used for fixing the trap elbow part and the thermocouple.
9. The gas trapping device according to claim 7 or 8, wherein the first temperature conductive plate and the second temperature conductive plate are made of copper.
10. The gas capture device of claim 1, wherein the insulating and water-proof device is made of epichlorohydrin rubber, chlorohydrin rubber or cold rolled steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686526.5U CN215811920U (en) | 2021-04-02 | 2021-04-02 | Gas trapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686526.5U CN215811920U (en) | 2021-04-02 | 2021-04-02 | Gas trapping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215811920U true CN215811920U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120686526.5U Active CN215811920U (en) | 2021-04-02 | 2021-04-02 | Gas trapping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215811920U (en) |
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2021
- 2021-04-02 CN CN202120686526.5U patent/CN215811920U/en active Active
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