CN218937608U - Cryostat capable of continuously regulating temperature - Google Patents
Cryostat capable of continuously regulating temperature Download PDFInfo
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- CN218937608U CN218937608U CN202223263681.XU CN202223263681U CN218937608U CN 218937608 U CN218937608 U CN 218937608U CN 202223263681 U CN202223263681 U CN 202223263681U CN 218937608 U CN218937608 U CN 218937608U
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Abstract
The utility model relates to the technical field of device testing, in particular to a continuously temperature-adjustable cryostat, which is characterized in that a connecting flange, a heat exchange device and a heat preservation device fixedly arranged on the periphery of the heat exchange device are arranged from top to bottom, and a plurality of long-rod cryothermometers with different calibration temperature points can be sequentially arranged by arranging at least one measuring channel; the temperature control sensor is arranged at the center of the constant temperature block and connected with the controller through a wire, so that the temperature of the constant temperature block can be detected in real time; through heat preservation device includes the shell body and is located heat preservation in the shell body, through setting up outer cavity, interior cavity, it is effectual to keep warm, and the temperature field state is stable, has ensured the precision of stock low temperature thermometer calibration.
Description
Technical Field
The utility model relates to the technical field of device testing, in particular to a cryostat capable of continuously regulating temperature.
Background
In recent years, with the rapid development of biomedical technology, the low-temperature long-rod thermometer with the temperature of minus 180 ℃ to minus 80 ℃ is widely applied, and the application scenes such as wireless monitoring and telemetering of biomedical and space meteorological temperatures, ultra-low temperature detection of space aircrafts, ultra-low temperature scientific experiments and the like all need to use the low-temperature thermometer, for example, an ultra-low temperature refrigerator with the temperature of minus 86 ℃ is suitable for ultra-low temperature safe storage of new crown vaccines, various ultra-low temperature field tests are increasingly increased, but the proper temperature field for carrying out magnitude tracing on the low-temperature thermometer for testing is lacking at present, and the problem of tracing the magnitude of the sensor for testing is not solved effectively.
The prior domestic low-temperature thermostat is mainly used for measuring a liquid helium temperature zone, has a complex structure, is very high in operation and use cost, and is not suitable for measuring a general sensor such as a digital thermometer and a long-rod thermometer.
The low-temperature digital thermometer with the temperature of minus 180 ℃ to minus 80 ℃ and the long-rod thermometer are calibrated at present by a fixed point device which provides constant low Wen Wenchang and can provide constant low Wen Wenchang, wherein the fixed point device comprises a mercury triple point minus 38.8344 ℃ and an argon triple point minus 189.3442 ℃; the low temperature of the comparison verification device is not in the temperature region, and a stable low temperature field in the range of-180 ℃ to-80 ℃ cannot be provided, and generally, when in calibration, the nearest fixed point device is selected according to the measuring range of the low temperature thermometer to calibrate, and the actual use temperature cannot be calibrated.
Disclosure of Invention
The utility model discloses a cryostat capable of continuously regulating temperature, and aims to solve the technical problems in the prior art.
The utility model adopts the following technical scheme:
the cryostat capable of continuously regulating temperature is suitable for calibrating a long-rod cryostat, and comprises a cold source tank, a connecting flange, a heat exchange device, a heat preservation device and a controller, wherein the cold source tank stores liquid nitrogen, the connecting flange is placed in the cold source tank and is fixedly connected with the cold source tank, the connecting flange is positioned at the upper end of the cold source tank, the heat exchange device is positioned at the lower end of the cold source tank, the heat preservation device is fixedly arranged at the periphery of the heat exchange device, and the controller is placed outside the cold source tank and is connected with the heat exchange device; the connecting flange and the heat exchange device are correspondingly provided with a measuring channel and a connecting pipe for installing a long-rod low-temperature thermometer; the temperature control sensor is arranged at the center of the heat exchange device and is communicated with the controller through a lead wire and the connecting pipe.
In some embodiments, the measuring channels are provided with n measuring channels, each measuring channel comprises an upper measuring channel which is positioned in the connecting flange and communicated with the outside, and a lower measuring channel which is positioned in the heat exchange device, a gap is arranged between the upper end part of the lower measuring channel and the lower end part of the upper measuring channel, the inner diameter of the upper measuring channel is the same as that of the lower measuring channel, the central lines of the upper measuring channel and the lower measuring channel coincide, and the tail end of the lower measuring channel is provided with a closed end, wherein n is more than or equal to 1 and less than or equal to 4.
In some embodiments, the heat exchanging device comprises a fixed block, a constant temperature block and a heating unit, wherein the fixed block, the constant temperature block and the heating unit are connected through the lower measuring channel, and a space is arranged between the fixed block and the constant temperature block;
the fixed block, the constant temperature block and the lower measuring channel are fixedly connected through low-temperature AB sealant;
the heating unit comprises a heating module arranged on the outer surface of the constant temperature block and the inner wall of the outer shell provided with the heat preservation device, and a heating cover arranged on the periphery of the constant temperature block.
In some embodiments, the closed end is arranged in the constant temperature block, and a temperature control sensor for measuring temperature is further arranged in the constant temperature block, the temperature control sensor is fixedly arranged at the center of the constant temperature block, and the constant temperature block is connected with the controller through a wire.
In some embodiments, the connecting flange comprises an upper flange plate, a lower flange plate, an upper measuring channel penetrating the upper flange plate and the lower flange plate, and a connecting pipe; the bottom of the upper flange plate is fixedly provided with an upper cover heat-insulating body, wherein the end part of the connecting pipe is provided with an aviation plug, and the aviation plug is connected with the controller.
In some embodiments, the insulating device comprises an outer housing and an insulating layer within the outer housing;
the heat preservation layer comprises a U-shaped heat preservation layer attached to the inner wall of the outer shell and an upper heat preservation layer attached to the upper end of the U-shaped heat preservation layer and surrounding the fixing block; an outer cavity is arranged between the U-shaped heat preservation layer and the upper heat preservation layer, and an inner cavity is arranged between the constant temperature block and the heating cover; wherein, be equipped with in the upper heat preservation respectively with the connecting pipe, the outer cavity is linked together and is used for the upper channel that the wire walked.
In some embodiments, the heating module is comprised of a heating resistance wire.
In some embodiments, the outer housing is connected to the lower flange by fasteners.
The beneficial effects are that:
compared with the prior art, the utility model has the following advantages:
the utility model discloses a cryostat capable of continuously regulating temperature, which is characterized in that a connecting flange, a heat exchange device and a heat preservation device fixedly arranged on the periphery of the heat exchange device are arranged from top to bottom, and a plurality of long-rod cryothermometers with different calibration temperature points can be sequentially arranged by arranging at least one measuring channel; the temperature control sensor is arranged at the center of the constant temperature block and connected with the controller through a wire, so that the temperature of the constant temperature block can be detected in real time; through heat preservation device includes the shell body and is located heat preservation in the shell body, through setting up outer cavity, interior cavity, it is effectual to keep warm, and the temperature field state is stable, has ensured the precision of stock low temperature thermometer calibration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments are briefly described below to form a part of the present utility model, and the exemplary embodiments of the present utility model and the description thereof illustrate the present utility model and do not constitute undue limitations of the present utility model; in the drawings:
fig. 1 is a schematic structural diagram of a technical scheme of a continuous temperature-regulating thermostat provided by an embodiment of the utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of a technical solution without a long-rod low-temperature thermometer in the continuous temperature-regulating thermostat;
fig. 4 is an exploded view of the continuous thermostat.
In the figure:
a connecting flange 1; aviation plug 11; a connection pipe 12; an upper flange 13; an upper cover insulator 14; an upper measurement channel 15; a lower flange 16; a heat exchanging device 2; a lower measurement channel 21; a bottom wall 211; a thermostatic block 22; a heating mantle 23; a heating module 24; a fixed block 25; a heat preservation device 3; an outer case 31; a U-shaped heat insulating layer 32; an upper heat insulating layer 33; an upper channel 331; an outer cavity 34; an inner cavity 35; a fastening bolt 4; a controller 5; a temperature control sensor 6; a long-rod thermometer 7; a cold source tank 8; liquid nitrogen 9; a wire 10; low temperature AB sealant 100.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. In the description of the present utility model, it should be noted that, as used in the specification and the claims, the term "comprising" is an open-ended term, and should be interpreted to mean "including, but not limited to. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1 to 4, the technical scheme provided by the utility model is as follows:
the utility model discloses a cryostat capable of continuously regulating temperature, which is suitable for calibrating a long-rod cryostat, and comprises a cold source tank 8, a connecting flange 1, a heat exchange device 2, a heat preservation device 3 and a controller 5, wherein the cold source tank 8 is internally provided with liquid nitrogen 9, the connecting flange 1 is arranged at the upper end and is fixedly connected in the cold source tank 8, the heat exchange device 2 is arranged at the lower end, the heat preservation device 3 is fixedly arranged at the periphery of the heat exchange device 2, and the controller 5 is arranged outside the cold source tank 8 and is connected with the heat exchange device 2; wherein, the connecting flange 1 and the heat exchanging device 2 are correspondingly provided with a measuring channel for installing a long-rod low-temperature thermometer and a connecting pipe 12; the central position of the heat exchanging device 2 is provided with a temperature control sensor 6, and the temperature control sensor 6 is communicated with the controller 5 through a lead 10 and a connecting pipe 12.
Preferred embodiments of the utility model:
as shown in fig. 1-4:
the cryostat capable of continuously regulating temperature is suitable for calibrating a long-rod cryostat, and comprises a cold source tank 8, a connecting flange 1, a heat exchange device 2, a heat preservation device 3, a controller 5, a connecting flange 1, a heat exchange device 2 and a heat preservation device 3, wherein the cold source tank 8 is internally stored with liquid nitrogen 9, the connecting flange 1 is arranged at the inner side of the cold source tank 8 and is fixedly connected with the upper end of the cold source tank 8, the heat exchange device 2 is arranged at the lower end of the heat exchange device, the heat preservation device 3 is fixedly connected with the outer side of the heat exchange device 2, a connecting pipe 12 connected with the controller 5 extends out of the upper end of the cold source tank 8, and a sealed connection part is formed by argon arc welding; wherein, the connecting flange 1 and the heat exchanging device 2 are correspondingly provided with a measuring channel for installing a long-rod low-temperature thermometer 7 and a connecting pipe 12; the central position of the heat exchanging device 2 is provided with a temperature control sensor 6, and the temperature control sensor 6 is communicated with the controller 5 through a lead 10 and a connecting pipe 12.
In this example, the measuring channels are provided with four measuring channels, each measuring channel comprises an upper measuring channel 15 located in the connecting flange 1 and connected with the outside, and a lower measuring channel 21 located in the heat exchanging device 2, a gap is formed between the upper end of the lower measuring channel 21 and the lower end of the upper measuring channel 15, the inner diameters of the upper measuring channel 15 and the lower measuring channel 21 are the same, the center lines of the upper measuring channel 15 and the lower measuring channel 21 coincide, the tail end of the lower measuring channel 21 is provided with a bottom wall 211, and the bottom wall 211 is made of sealed full-welded stainless steel.
The heat exchanging device 2 comprises a fixed block 25, a constant temperature block 22 and a heating unit, wherein the fixed block 25 and the constant temperature block 22 are connected through the lower measuring channel 21, and a space is arranged between the fixed block and the constant temperature block; the heating unit comprises a heating module 24 arranged on the outer surface of the constant temperature block 22 and the inner wall of the outer shell 31, and a heating cover 23 arranged on the periphery of the constant temperature block 22, wherein the heating module consists of heating resistance wires.
The fixed block 25 is placed in the groove of the upper heat insulation layer 33, and the fixed block 25, the constant temperature block 22 and the lower measurement channel 21 are all fixedly connected through the low-temperature AB sealant 100.
The four lower measuring channels 21 extend into the constant temperature block 22, the tail end of the constant temperature block is provided with a closed bottom wall 211, and the four long-rod low-temperature thermometers 7 with different standard temperature points are inserted into the constant temperature block 22 from the upper measuring channel 15 and the lower measuring channel 21 and used for measuring the temperature of the constant temperature block 22.
The central position in the constant temperature block 22 is provided with a temperature control sensor 6 for measuring temperature, the temperature control sensor 6 is connected with the controller 5 through a lead 10 via an upper channel 331, a connecting pipe 12 and an aviation plug 11, the end part of the connecting pipe 12 is provided with the aviation plug 11, and the aviation plug 11 is connected with the controller 5.
In this example, the connecting flange 1 includes an upper flange 13, a lower flange 16, four upper measuring channels 15 penetrating the upper flange 13 and the lower flange 16, and a connecting pipe 12; an upper cover heat preservation body 14 is fixedly arranged at the bottom of the upper flange plate 13, wherein an aviation plug 11 is arranged at the end part of the connecting pipe 12, and the aviation plug 11 is connected with the controller 5.
In this example, the heat preservation device 3 includes an outer shell 31 and a heat preservation layer located in the outer shell 31.
The heat-insulating layer comprises a U-shaped heat-insulating layer 32 attached to the inner wall of the outer shell 31 and an upper heat-insulating layer 33 attached to the upper end of the U-shaped heat-insulating layer 32 and surrounding the fixed block 25; an outer cavity 34 is arranged between the U-shaped heat preservation layer 32 and the upper heat preservation layer 33, and an inner cavity 35 is arranged between the constant temperature block 22 and the heating cover 23; wherein, the upper insulating layer 33 is provided with an upper channel 331 which is respectively connected with the connecting pipe 12 and the outer cavity 34 and is commonly used for the wire 10 to pass through.
In this case, the outer housing 31 is fastened to the lower flange 16 by fastening bolts 4.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (8)
1. The utility model provides a but cryostat that continuous temperature regulated is applicable to the calibration of stock cryogenic thermometer, its characterized in that: the device comprises a cold source tank, a connecting flange, a heat exchange device, a heat preservation device and a controller, wherein the cold source tank stores liquid nitrogen, the connecting flange is placed in the cold source tank and is fixedly connected with the cold source tank and is positioned at the upper end, the heat exchange device is positioned at the lower end, the heat preservation device is fixedly arranged at the periphery of the heat exchange device, and the controller is placed outside the cold source tank and is connected with the heat exchange device; the connecting flange and the heat exchange device are correspondingly provided with a measuring channel and a connecting pipe for installing a long-rod low-temperature thermometer; the temperature control sensor is arranged at the center of the heat exchange device and is communicated with the controller through a lead wire and the connecting pipe.
2. The continuously adjustable temperature cryostat according to claim 1 wherein: the measuring channels are provided with n measuring channels, each measuring channel comprises an upper measuring channel which is positioned in the connecting flange and communicated with the outside and a lower measuring channel which is positioned in the heat exchange device, a gap is formed between the upper end part of each lower measuring channel and the lower end part of each upper measuring channel, the inner diameters of the upper measuring channels and the inner diameters of the lower measuring channels are the same, the central lines of the upper measuring channels and the lower measuring channels coincide, and the tail ends of the lower measuring channels are provided with closed ends, wherein n is more than or equal to 1 and less than or equal to 4.
3. The continuously adjustable temperature cryostat according to claim 2 wherein: the heat exchange device comprises fixed blocks, constant temperature blocks and heating units, wherein the fixed blocks, the constant temperature blocks and the heating units are connected through the lower measuring channel, and the heating units are arranged at the periphery of the constant temperature blocks;
the fixed block, the constant temperature block and the lower measuring channel are fixedly connected through low-temperature AB sealant;
the heating unit comprises a heating module arranged on the outer surface of the constant temperature block and the inner wall of the outer shell provided with the heat preservation device, and a heating cover arranged on the periphery of the constant temperature block.
4. A continuously adjustable temperature cryostat according to claim 3 wherein: the constant temperature block is internally provided with the closed end and is also provided with a temperature control sensor for measuring temperature, the temperature control sensor is fixedly arranged at the center of the constant temperature block, and the constant temperature block is connected with the controller through a wire.
5. A continuously adjustable temperature cryostat according to claim 3 wherein: the connecting flange comprises an upper flange plate, a lower flange plate, an upper measuring channel and a connecting pipe, wherein the upper measuring channel and the connecting pipe penetrate through the upper flange plate and the lower flange plate; the bottom of the upper flange plate is fixedly provided with an upper cover heat-insulating body, wherein the end part of the connecting pipe is provided with an aviation plug, and the aviation plug is connected with the controller.
6. The continuously adjustable temperature cryostat according to claim 5 wherein: the heat preservation device comprises an outer shell and a heat preservation layer positioned in the outer shell;
the heat preservation layer comprises a U-shaped heat preservation layer attached to the inner wall of the outer shell and an upper heat preservation layer attached to the upper end of the U-shaped heat preservation layer and surrounding the fixing block; an outer cavity is arranged between the U-shaped heat preservation layer and the upper heat preservation layer, and an inner cavity is arranged between the constant temperature block and the heating cover; wherein, be equipped with in the upper heat preservation respectively with the connecting pipe, the outer cavity is linked together and is used for the upper channel that the wire walked.
7. The continuously adjustable temperature cryostat according to claim 6 wherein: the heating module consists of a heating resistance wire.
8. The continuously adjustable temperature cryostat according to claim 7, wherein: the outer shell is connected with the lower flange plate through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223263681.XU CN218937608U (en) | 2022-12-06 | 2022-12-06 | Cryostat capable of continuously regulating temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223263681.XU CN218937608U (en) | 2022-12-06 | 2022-12-06 | Cryostat capable of continuously regulating temperature |
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| Publication Number | Publication Date |
|---|---|
| CN218937608U true CN218937608U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223263681.XU Active CN218937608U (en) | 2022-12-06 | 2022-12-06 | Cryostat capable of continuously regulating temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218937608U (en) |
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2022
- 2022-12-06 CN CN202223263681.XU patent/CN218937608U/en active Active
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