CN213148784U - Constant temperature measuring device - Google Patents
Constant temperature measuring device Download PDFInfo
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- CN213148784U CN213148784U CN202021403899.9U CN202021403899U CN213148784U CN 213148784 U CN213148784 U CN 213148784U CN 202021403899 U CN202021403899 U CN 202021403899U CN 213148784 U CN213148784 U CN 213148784U
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Abstract
The utility model provides a constant temperature measuring device for low temperature measurement, which comprises a measuring tube, a low temperature container and a constant temperature external member; wherein, the low temperature medium is equipped with in the low temperature container, survey buret bottom and some pipe shaft and insert in the low temperature medium, the constant temperature external member includes cover shell and/or heat conduction sleeve, the constant temperature external member is located survey buret is last, the cover shell and/or heat conduction sleeve one end is inserted in the low temperature medium, one end exposes under external temperature, the cover shell with survey buret is as an organic whole, cover shell upper portion is sealed. Wherein the utility model has the advantages that: the constant temperature effect through the constant temperature external member makes when low temperature medium volatilizees, surveys buret and also can not take place the temperature interval because of low temperature medium volatilizees and change.
Description
Technical Field
The utility model relates to a cryogenic measurement field, in particular to invariable device of cryogenic measurement temperature.
Background
In the low temperature experiment, the volatile characteristic of low temperature medium leads to surveying buret to be in different temperature gradient interval, can cause very big influence to the measuring result.
Disclosure of Invention
In order to solve the technical problem, the utility model discloses a constant temperature measuring device of low temperature, the technical scheme of the utility model is implemented like this:
a constant temperature measuring device for low temperature comprises a measuring tube, a low temperature container and a constant temperature kit; wherein, the low temperature medium is equipped with in the low temperature container, survey buret bottom and some pipe shaft and insert in the low temperature medium, the constant temperature external member includes cover shell and/or heat conduction sleeve, the constant temperature external member is located survey buret is last, the cover shell and/or heat conduction sleeve one end is inserted in the low temperature medium, one end exposes under external temperature, the cover shell with survey buret is as an organic whole, cover shell upper portion is sealed.
Preferably, the casing bottom is sealed, the casing with survey buret is as an organic whole, the casing is quartz or glass material, the inside heat-conducting medium that is equipped with of casing.
Preferably, the interior of the casing is a vacuum.
Preferably, the air extractor is further comprised, the casing is provided with a joint, and the air extractor is connected with the joint.
Preferably, the joint is provided with a vacuum flange.
Preferably, the material of the heat-conducting sleeve is selected from metal materials.
Preferably, the outer wall of the measuring tube and/or the inner wall of the casing are provided with silver-plated areas, and the silver-plated areas are located at the connecting contact areas of the measuring tube and the casing.
By implementing the technical scheme of the utility model, the technical problem that the measuring tube is easily affected by the volatilization of the low-temperature medium to influence the measuring result in the prior art can be solved; implement the technical scheme of the utility model, it is airtight through the vacuum of cover shell, can realize reducing because the low temperature medium volatilizees the technological effect of the influence of the temperature interval change that receives.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
FIG. 1 is a schematic structural view of examples 1, 2 and 3;
fig. 2 is a schematic structural view of embodiment 2.
In the above drawings, the reference numerals denote: measuring tube
2, cryogenic vessel
2-1, low temperature medium
3, constant temperature set
3-1, a shell 3-2, a heat conducting sleeve 3-3, a joint 3-4 and a vacuum flange
4, air extracting device
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 efforts belong to the protection scope of the present invention.
Example 1
In a specific example 1, as shown in fig. 1, a low-temperature measurement temperature constant device includes a measurement pipe 1, a low-temperature container 2, and a constant temperature kit 3; wherein, low temperature medium 2-1 is equipped with in the low temperature container 2, survey 1 bottom of tubes and a part body insert in low temperature medium 2-1, constant temperature external member 3 includes cover 3-1 and/or heat conduction sleeve 3-2, constant temperature external member 3 is located survey 1 tubes, cover 3-1 and/or heat conduction sleeve 3-2 one end is inserted in low temperature medium 2-1, and one end exposes under the outside temperature, cover 3-1 with survey 1 tubes is as an organic whole, cover 3-1 upper portion is sealed.
When a low-temperature experiment or low-temperature measurement is carried out, a sample is loaded into the measuring tube 1, then the bottom and a part of the tube body of the measuring tube 1 are inserted into the low-temperature medium 2-1, and the bottom of the measuring tube 1 is completely immersed into the low-temperature control medium 2-1 to start measurement, because the time consumption of the ordinary low-temperature experiment or low-temperature measurement is long, the low-temperature medium 2-1 is easy to volatilize along with the time change, the measuring tube 1 is influenced by the volatilization of the low-temperature medium 2-1 to generate the temperature interval change under the normal condition, so the measurement result is influenced, when the sleeve 3-1 is adopted to wrap the part of the tube body of the measuring tube 1, the upper end of the sleeve 3-1 is welded with the measuring tube 1 into a whole, the upper part is closed, the lower end of the sleeve 3-1 is inserted into the, therefore, even when the low-temperature medium 2-1 volatilizes, the temperature gradient change in the measuring tube 1 is not or hardly affected by the volatilization. The measuring accuracy of the measuring tube 1 during low-temperature test or low-temperature measurement is improved, the temperature inside the measuring tube 1 is kept constant, and the measuring tube is suitable for various low-temperature test or low-temperature measurement environments.
When the heat-conducting sleeve 3-2 is arranged on the measuring pipe 1, the heat-conducting sleeve 3-2 ensures that the measuring pipe 1 does not generate temperature interval change due to volatilization of the low-temperature medium 2-1 through the temperature transfer function as long as the bottom of the heat-conducting sleeve 3-2 is positioned in the low-temperature medium 2-1.
Example 2
In a preferred embodiment 2, the casing 3-1 is closed at the bottom, the casing 3-1 is integral with the measuring tube 1, the casing 3-1 is made of quartz or glass, and the casing 3-1 contains a heat conducting medium.
In the embodiment, the casing 3-1 is made of quartz or glass, is lighter and can be used more safely and conveniently, the casing 3-1 and the measuring tube 1 are integrated, and no gap is formed in the middle of the casing and can not be frozen due to a low-temperature environment. And the temperature can not be rapidly increased or decreased like the thickness and the weight of the metal material, and the quartz or glass material does not influence the observation of the sample change or the reaction in the measuring process of the measuring tube 1.
Example 3
In a preferred embodiment 3, the interior of the shell 3-1 is evacuated.
In the embodiment, the measurement precision of the embodiment 1 is further improved, the bottom of the casing 3-1 is also closed, the casing 3-1 and the measurement pipe 1 are in vacuum, no air exists, heat is not easy to transmit under the vacuum condition, and the measurement pipe 1 at the casing 3-1 part is always in the stable temperature condition and does not generate obvious temperature gradient change along with the volatilization of the low-temperature medium 2-1.
Example 4
In a preferred embodiment 4, as shown in fig. 2, further comprising a suction device 4, said jacket 3-1 is provided with a connector 3-3, said suction device 4 being connected to said connector 3-3.
In this embodiment, the air extractor 4 is matched with the connector 3-3 to realize constant vacuum in the constant temperature area, and different gases can be injected according to experiment or measurement requirements.
In a preferred embodiment, the joint 3-3 is provided with a vacuum flange 3-4.
After the air exhaust device 4 finishes vacuum air exhaust, the vacuum flange 3-4 seals the casing 3-1, and the embodiment has simple structure and is convenient to maintain and disassemble.
In a preferred embodiment, the material of the heat-conducting sleeve 3-2 is selected from metal materials.
The metal material is convenient for welding, is resistant to high and low temperature, and is suitable for low temperature experiments and low temperature measurement.
In a preferred embodiment, the measuring tube outer wall 1 and/or the casing 3-1 inner wall is provided with a silver-plated zone in the region where the measuring tube 1 is connected to the casing 3-1.
In the embodiment, silver plating can effectively reduce the heat radiation amount between low-temperature medium environments, and the increased silver plating area can effectively maintain the long-term stability of the temperature of the measuring pipe 1.
By implementing the technical scheme of the utility model, the technical problem that the measuring tube is easily affected by the volatilization of the medium to influence the measuring result in the prior art can be solved; implement the technical scheme of the utility model, it is airtight through the vacuum of cover shell, can realize reducing because the low temperature medium volatilizees the technological effect of the influence of the temperature interval change that receives.
It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention, and that any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (7)
1. A constant temperature device for low-temperature measurement is characterized in that: comprises a measuring pipe, a low-temperature container and a constant-temperature kit; wherein, the low temperature medium is equipped with in the low temperature container, survey buret bottom and some pipe shaft and insert in the low temperature medium, the constant temperature external member includes cover shell and/or heat conduction sleeve, the constant temperature external member is located survey buret is last, the cover shell and/or heat conduction sleeve one end is inserted in the low temperature medium, one end exposes under external temperature, the cover shell with survey buret is as an organic whole, cover shell upper portion is sealed.
2. A device for measuring constant temperature at a low temperature according to claim 1, wherein: the casing bottom is sealed, the casing with survey buret is as an organic whole, the casing is quartz or glass material, the inside heat-conducting medium that is equipped with of casing.
3. A device for measuring constant temperature at a low temperature according to claim 1, wherein: the housing interior is evacuated.
4. A cryomeasurement constancy apparatus according to claim 2 or 3, characterised in that: also comprises an air extracting device; the casing is provided with a joint, and the air exhaust device is connected with the joint.
5. The device for measuring constant temperature at a low temperature according to claim 4, wherein: the joint is provided with a vacuum flange.
6. A device for measuring constant temperature at a low temperature according to claim 1, wherein: the heat conducting sleeve is made of metal.
7. A device for measuring constant temperature at a low temperature according to claim 1, wherein: the measuring tube outer wall and/or the casing inner wall are/is provided with a silver plating area, and the silver plating area is located in a connecting area of the measuring tube and the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021403899.9U CN213148784U (en) | 2020-07-16 | 2020-07-16 | Constant temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021403899.9U CN213148784U (en) | 2020-07-16 | 2020-07-16 | Constant temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213148784U true CN213148784U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021403899.9U Active CN213148784U (en) | 2020-07-16 | 2020-07-16 | Constant temperature measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213148784U (en) |
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2020
- 2020-07-16 CN CN202021403899.9U patent/CN213148784U/en active Active
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