CN219284490U - Low temperature detection equipment - Google Patents
Low temperature detection equipment Download PDFInfo
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- CN219284490U CN219284490U CN202223611692.2U CN202223611692U CN219284490U CN 219284490 U CN219284490 U CN 219284490U CN 202223611692 U CN202223611692 U CN 202223611692U CN 219284490 U CN219284490 U CN 219284490U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The application discloses low temperature detection equipment belongs to detector technical field. The disclosed low-temperature detection equipment comprises a refrigerator, a cold accumulation device and a refrigeration type infrared detector, wherein the refrigerator is connected with the cold accumulation device in a heat conduction manner, and the refrigeration type infrared detector is connected with the cold accumulation device in a heat conduction manner. The scheme solves the problem that in the related art, when the refrigerator is used for providing a low-temperature environment for the refrigeration type infrared detector, the service life of the refrigerator is shortened due to the fact that the refrigerator is required to continuously work for a long time.
Description
Technical Field
The application belongs to the technical field of detectors, and particularly relates to low-temperature detection equipment.
Background
The refrigeration type infrared detector needs to work in a low temperature state, and in the related art, a refrigerator is generally used for refrigerating the refrigeration type infrared detector, so that a low temperature environment required by the work of the refrigeration type infrared detector is created. Under the condition that the refrigeration type infrared detector needs to work for a long time, the refrigerator also needs to work continuously for a long time to maintain the low-temperature environment needed by the work of the refrigeration type infrared detector, and the service life of the refrigerator can be shortened when the refrigerator works continuously for a long time.
Disclosure of Invention
The embodiment of the application aims to provide low-temperature detection equipment, which can solve the problem that the service life of a refrigerator is shortened due to the fact that the refrigerator is required to continuously work for a long time when the refrigerator is used for creating a low-temperature environment for a refrigeration type infrared detector in the related technology.
In order to solve the technical problems, the application is realized as follows:
the embodiment of the application provides low-temperature detection equipment, which comprises a refrigerator, a cold accumulation device and a refrigeration type infrared detector, wherein,
the refrigerator is connected with the cold accumulation device in a heat conduction way;
the refrigeration type infrared detector is connected with the cold accumulation device in a heat conduction mode.
In this application embodiment, when refrigeration type infrared detector needs work, through the refrigerator to cold-storage device refrigeration, treat after cold-storage device stores sufficient cold volume, close the refrigerator, refrigerate refrigeration type infrared detector through the cold volume that cold-storage device stored for the refrigerator can intermittent type nature work, compares in the long-time continuous operation's of refrigerator condition, and refrigerator intermittent type nature work can prolong the life of refrigerator. Therefore, the low-temperature detection equipment disclosed by the embodiment of the application can solve the problem that the service life of the refrigerator is shortened due to the fact that the refrigerator is required to continuously work for a long time when the refrigerator is used for creating a low-temperature environment for the refrigeration type infrared detector in the related technology.
Drawings
FIG. 1 is a cross-sectional view of a cryogenic detection device disclosed in an embodiment of the present application;
FIG. 2 is a top view showing a part of the structure of a low temperature detecting apparatus according to an embodiment of the present application;
fig. 3 is a schematic diagram of an external structure of a low-temperature detection device according to an embodiment of the present application.
Reference numerals illustrate:
100-refrigerating machine, 110-cold head, 120-first flange,
200-refrigerating type infrared detector,
300-a shell, 310-a shell inner cavity, 320-a first through hole, 330-a light transmission area, 340-a second flange,
400-vacuum valve,
500-supporting legs,
600-cold storage medium container,
710-pressure release pipe, 720-medium input pipe, 730-medium output pipe,
800-cold guide seat and 810-accommodating groove.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings by means of specific embodiments and application scenarios thereof.
As shown in fig. 1 to 3, the present application discloses a low temperature detection apparatus including a refrigerator 100, a cold storage device, and a refrigerating type infrared detector 200.
The refrigerator 100 is capable of generating cold, and the refrigerator 100 is in heat conduction connection with the cold storage device for cooling the cold storage device. The cold accumulation device is used for storing cold energy or releasing cold energy, the refrigerator 100 refrigerates the cold accumulation device, so that the cold accumulation device stores cold energy, the refrigeration type infrared detector 200 is connected with the cold accumulation device in a heat conduction manner, the cold accumulation device can release cold energy to the refrigeration type infrared detector 200, cold energy required by the refrigeration type infrared detector 200 can be provided for the refrigeration type infrared detector 200, and after the cold accumulation device stores enough cold energy, normal operation of the refrigeration type infrared detector 200 can be maintained in a certain period of time.
There are various ways in which the refrigerator 100 may be connected to the cold storage device, in an alternative embodiment the refrigerator 100 may be non-detachably connected to the cold storage device, for example by welding, and in an alternative embodiment the refrigerator 100 may be detachably connected to the cold storage device, for example by bolting or clamping.
In this embodiment of the application, when the refrigeration type infrared detector 200 needs to work, the refrigerator 100 is used for refrigerating the cold storage device, after the cold storage device stores enough cold energy, the refrigerator is turned off, and the refrigeration type infrared detector 200 is refrigerated by the cold energy stored by the cold storage device, so that the refrigerator 100 can intermittently work, and compared with the condition that the refrigerator 100 continuously works for a long time, the refrigerator 100 intermittently works to prolong the service life of the refrigerator 100. Therefore, the low-temperature detection device disclosed in the embodiments of the present application can solve the problem that the service life of the refrigerator 100 is shortened due to the long-time continuous operation of the refrigerator 100 when the refrigerator 100 is used to create a low-temperature environment for the refrigeration type infrared detector 200 in the related art.
In addition, when the refrigerator 100 directly cools the refrigeration type infrared detector 200, the performance requirement of the refrigerator 100 is also high. For example, the refrigerator 100 needs to provide enough and stable cooling capacity for the refrigeration type infrared detector 200 in real time, and if the refrigerator 100 fails during operation or the refrigerator 100 fails to operate due to power failure of the refrigerator 100, the refrigerator 100 cannot provide enough and stable cooling capacity for the refrigeration type infrared detector 200, which results in forced interruption of the operation of the refrigeration type infrared detector 200.
In this embodiment of the present application, if the refrigerator 100 cannot work due to the failure of the refrigerator 100, the cold stored by the cold storage device may also provide the cold for the refrigeration type infrared detector 200, so that the refrigeration type infrared detector 200 may not stop working immediately, and the performance requirement of the refrigerator 100 is reduced, thereby reducing the technical standard of the refrigerator 100 and further reducing the use cost of the refrigerator 100.
Meanwhile, vibration is generated in the working process of the refrigerator 100, if the refrigerator 100 directly refrigerates the refrigeration type infrared detector 200, the vibration of the refrigerator 100 can affect the working of the refrigeration type infrared detector 200, so that the vibration of the refrigerator 100 needs to be reduced, the performance requirement on the refrigerator 100 is also improved, and the use cost of the refrigerator 100 is certainly increased.
In this embodiment of the application, the refrigerator 100 refrigerates the refrigeration type infrared detector 200 through the cold storage device, so that the refrigerator 100 can intermittently work, and therefore, the refrigerator 100 can refrigerate the cold storage device, and after the refrigerator 100 is closed, the refrigeration type infrared detector 200 is opened again to start working, and in this case, the influence of vibration of the refrigerator 100 on the working of the refrigeration type infrared detector 200 can be avoided.
After the refrigerator 100 cools the cold storage device, the temperature of the cold storage device is low, if the cold storage device is directly exposed to the external atmospheric environment, convection heat leakage between the cold storage device and the external atmospheric environment can cause the temperature rise of the cold storage device to be accelerated, and the working time of the cold storage component is shortened.
To this end, in this embodiment of the present application, the low temperature detection device may further include a housing 300, the housing 300 may be provided with a housing inner cavity 310 and a first through hole 320 that is communicated with the housing inner cavity 310, the cold storage device is disposed in the housing inner cavity 310, the refrigerator 100 is disposed in the housing 300, the refrigerator 100 is connected with the cold storage device through the housing 300, and the refrigerator 100 is in sealing fit with the first through hole 320, so that the housing inner cavity 310 is sealed from the external environment of the housing 300, and a part of the structure of the refrigerator 100 passes through the first through hole 320 and is connected with the cold storage device, so that the refrigerator 100 is connected with the cold storage device in a heat conduction manner. This structure can reduce convection heat leakage between the cold storage device and the external environment of the case 300, and can prolong the cooling time of the cooled cold storage device to the cooled infrared detector 200.
The manner of realizing the heat conduction connection between the refrigeration type infrared detector 200 and the cold accumulation device is various, and in an alternative embodiment, the refrigeration type infrared detector 200 may be disposed on the outer wall of the housing 300, and the refrigeration type infrared detector 200 indirectly contacts with the cold accumulation device through the wall of the housing 300, so as to realize the heat conduction between the refrigeration type infrared detector 200 and the cold accumulation device. In another alternative embodiment, a third through hole may be formed on the housing 300, and the refrigeration type infrared detector 200 may be plugged and matched with the third through hole, and the refrigeration type infrared detector is directly contacted with the cold storage device, so that heat conduction between the refrigeration type infrared detector 200 and the cold storage device is achieved.
In this embodiment, the refrigeration type infrared detector 200 may be disposed in the inner cavity 310 of the housing, the housing 300 may have a light-transmitting area 330, and the refrigeration type infrared detector 200 is opposite to the light-transmitting area 330, so that the refrigeration type infrared detector 200 can perform infrared detection. In this case, the shell 300 can play a role of protecting the refrigeration type infrared detector 200, and meanwhile, the refrigeration type infrared detector 200 is more convenient to be directly connected with a cold storage device, so that the cold energy loss is reduced.
The transparent area 330 may be a transparent window disposed on the housing 300, and the transparent window may be made of K9 glass or sapphire, and the transparent window may be made of a material that is adjusted according to practical requirements. Alternatively, the light-transmitting window may be fixed to the housing 300 by welding, but in other embodiments, the light-transmitting window may be adhesively fixed to the housing 300.
In the case where the refrigerator 100 is non-detachably connected to the cold storage device, the cold storage device may be non-detachably disposed in the case cavity 310 by welding or the like, and the refrigerator 100 may be non-detachably disposed in the case 300 by welding or the like, so that the refrigerator 100 is non-detachably connected to the cold storage device through the case 300. In the case that the refrigerator 100 is detachably connected with the cold storage device, the cold storage device may be disposed in the inner cavity 310 of the casing, and the refrigerator 100 may be detachably connected with the casing 300 by means of bolts or clamping, so as to achieve the detachable connection of the refrigerator 100 and the cold storage device.
In order to further reduce convective heat leakage between the cold storage device and the external environment of the enclosure 300, in this embodiment, the enclosure 300 may further be provided with a second through hole communicating with the housing inner cavity 310, and the low temperature detection device may further include a vacuum valve 400, where the vacuum valve 400 may be disposed at the second through hole, and the vacuum valve 400 is used to connect with a first vacuum pump, and the first vacuum pump is used to draw air in the housing inner cavity 310 through the vacuum valve 400, so that a vacuum environment is formed in the housing inner cavity 310. The vacuum environment formed in the inner cavity 310 of the shell can further reduce the convection heat leakage of the external environment to the cold accumulation device, and prolong the time for the cold accumulation device to provide a low-temperature environment for the refrigeration type infrared detector 200 after the cold accumulation device is refrigerated.
When the vacuum environment is extracted from the inner cavity 310 of the shell, the inner cavity 310 of the shell can be firstly extracted to the middle preset vacuum degree by using the first vacuum pump, then the leak detection treatment is carried out on the low-temperature detection equipment by using the helium mass spectrometer, after the leak rate of the low-temperature detection equipment is smaller than the preset leak rate, the inner cavity 310 of the shell is continuously extracted to the preset vacuum degree by using the first vacuum pump, and the middle preset vacuum degree is smaller than the preset vacuum degree, so that the maintenance time of the vacuum environment is prevented from being shortened due to the higher leak rate of the low-temperature detection equipment. The vacuum degree of the vacuum environment can be less than or equal to 10 -5 Pa, i.e. the preset vacuum degree is less than or equal to 10 -5 Pa。
In the above-mentioned scheme, the refrigerator 100 is disposed on the housing 300, the refrigerator 100 may be provided with the first flange 120, the first through hole 320 of the housing 300 may be provided with the second flange 340, and the first flange 120 and the second flange 340 are connected to realize connection between the refrigerator 100 and the housing 300, and in the case that the first flange 120 and the second flange 340 are connected, the refrigerator 100 is connected to the cold storage device in a heat conduction manner. Alternatively, the first flange 120 and the second flange 340 may be detachably connected by welding, or may be detachably connected by rivets to achieve the non-detachable connection of the refrigerator 100 and the housing 300, and the first flange 120 and the second flange 340 may be detachably connected by a threaded connection member such as a bolt to achieve the detachable connection of the refrigerator 100 and the housing 300.
Because the first through hole is formed in the casing 300, the refrigerator 100 is in plugging fit with the first through hole 320, in order to avoid the problem that the casing inner cavity 310 is communicated with the external environment through the first through hole, and the leakage rate of the low-temperature detection device is increased, a sealing structural member can be arranged between the first flange 120 and the second flange 340, so as to improve the tightness between the first flange 120 and the second flange 340.
The sealing structure is made of various materials, and optionally, the sealing structure can be a rubber sealing ring. In the embodiment of the present application, the sealing structure may be a first metal sealing ring, through which the refrigerator 100 is in sealing engagement with the housing 300. The sealing performance of the metal sealing ring is superior to that of the rubber sealing ring, so that the leak rate of the low-temperature detection equipment can be reduced, and the maintenance time of the vacuum environment can be prolonged. In addition, the rubber sealing ring can be easily hardened in a low-temperature environment, so that the sealing performance is affected, the first metal sealing ring is not easily hardened in the low-temperature environment, and a good sealing effect can be ensured.
The cold storage device is disposed in the case 300, and in the embodiment of the present application, the cold storage device may be supported to the inner wall of the case 300 through the support legs 500, and a gap may be provided between the cold storage device and the inner wall of the case 300. In this case, the contact area between the cold storage device and the case 300 can be reduced, and thus the conduction heat leakage of the cold storage device can be reduced, and the cooling time of the cooling type infrared detector 200 can be prolonged after the cold storage device cools.
Further, the length of the support leg 500 may be greater than the cross-sectional area of the support leg 500 (i.e., the area of the support leg 500 that is perpendicular to the length direction thereof), such that the distance between the cold storage device and the inner wall of the outer case 300 is greater than the contact area of the support leg 500 and the inner wall of the outer case 300, and extending the length of the support leg 500 can further reduce the conductive heat leakage.
The low temperature detection apparatus may further include a heat insulating layer, which may be wrapped around the outer surface of the cold storage device, and in the case where the cold storage device includes the cold storage medium container 600, the heat insulating layer is wrapped around the outer surface of the cold storage medium container 600. In this case, radiation heat leakage from the external environment to the cold accumulation device can be reduced, and the cooling time of the cooled cold accumulation device to the cooled infrared detector 200 can be prolonged. Alternatively, the heat insulating layer may be one layer or may be multiple layers.
In the embodiment of the present application, the cold storage device may include a cold storage medium container 600, where the cold storage medium container 600 is used to accommodate a cold storage medium, and the refrigerator 100 is connected to the cold storage medium container 600 in a heat conduction manner, and in the case where the cold storage medium container 600 is filled with the cold storage medium, the refrigerator 100 is used to cool the cold storage medium through the cold storage medium container 600, so as to store the cold storage medium. In this case, the cold storage medium may be a solid medium, a liquid medium, or a gaseous medium, increasing the selectivity of the cold storage medium.
In order to realize the heat conduction connection between the refrigerator 100 and the cold storage medium container 600, the cold storage medium container 600 may be provided with a cold guide seat 800, the cold guide seat 800 may be provided with a receiving groove 810, and part of components of the refrigerator 100 may extend into the receiving groove 810, and the refrigerator 100 indirectly contacts with the cold storage medium container 600 through the cold guide seat 800, so as to realize the heat conduction connection between the refrigerator 100 and the cold storage medium container 600.
In the case where the cold storage medium is a liquid medium, the temperature of the liquid medium gradually increases and may be gasified in the process of providing the cold amount to the refrigeration type infrared detector 200, and the pressure in the cold storage medium container 600 increases due to the gasification of the liquid medium, and in the case where the cold storage medium is a gas medium, the pressure in the cold storage medium container 600 also increases in the process of inputting the gas medium into the cold storage medium container 600, and potential safety hazards may be generated due to the excessive internal pressure of the cold storage medium container 600.
For this reason, the low temperature detecting device may further include a pressure relief tube 710, one end of the pressure relief tube 710 may be communicated with the cold storage medium container 600, and the other end of the pressure relief tube 710 is exposed out of the low temperature detecting device, for example, in the case that the low temperature detecting device further includes the housing 300, the other end of the pressure relief tube 710 extends out of the housing 300, the pressure relief tube 710 may be provided with a pressure relief valve, and the pressure relief valve is automatically opened to decompress the cold storage medium container 600 when the pressure in the cold storage medium container 600 is greater than the preset pressure, so as to improve the safety performance of the low temperature detecting device.
In the case that the cold storage medium is a fluid medium (a cold storage medium that is a liquid medium or a gaseous medium), the low temperature detection device may further include a medium conveying pipe, one end of the medium conveying pipe is communicated with the cold storage medium container 600, and the other end of the medium conveying pipe is exposed out of the low temperature detection device, and the medium conveying pipe is used for inputting the fluid medium into the cold storage medium container 600, so that a user can input the fluid medium into the cold storage medium container 600 according to specific working requirements of the refrigeration type infrared detector 200.
The length of the pressure relief tube 710 may be greater than its cross-sectional area (i.e., the area of the cross-section perpendicular to the length direction of the pressure relief tube 710), and the length of the media delivery tube may be greater than its cross-sectional area (i.e., the area of the cross-section perpendicular to the length direction of the media delivery tube), extending the length of the pressure relief tube 710 and the media delivery tube may reduce the heat transfer and leakage of the fluid media through the pressure relief tube 710 and the media delivery tube.
The cold storage medium may be a liquid medium, such as liquid nitrogen, and in order to determine the volume of the liquid medium in the cold storage medium container 600, the liquid level of the liquid medium in the cold storage medium container 600 may be detected, and the volume of the liquid medium may be calculated from the liquid level of the liquid medium in the cold storage medium container 600. Because the temperature of the liquid medium after refrigeration is lower, the detection precision of the liquid level meter in a low-temperature environment is poor, and even the risk of difficult work exists.
For this reason, in the embodiment of the present application, the low temperature detection apparatus may further include a plurality of temperature detection devices, which may be temperature sensors, and the plurality of temperature detection devices may be disposed in the cold storage medium container 600 and distributed along the height direction of the cold storage medium container 600. The temperature detected by the temperature detecting means in contact with the liquid medium is not equal to the temperature detected by the temperature detecting means not in contact with the liquid medium, and therefore, the height at which the temperature detecting means having a smaller temperature detecting value is located can be taken as the actual liquid level.
The cooled liquid medium is used for providing cooling capacity for the cooled infrared detector 200, and because the liquid medium absorbs heat generated in the working process of the cooled infrared detector 200 and leaks heat from the external environment, the liquid medium can be heated along with the increase of the working time of the cooled infrared detector 200, and in order to monitor the temperature of the liquid medium in real time, the temperature detection value of the temperature detection device with the lowest height on the cold storage medium container 600 can be used as the temperature of the liquid medium, when the temperature of the liquid medium is about to not meet the working requirement of the cooled infrared detector 200, the refrigerator 100 is started to refrigerate the liquid medium in time, and after the temperature of the liquid medium reaches the target temperature, the refrigerator 100 is closed.
It should be noted that, the requirements of the refrigeration type infrared detector 200 of different types or models for the working temperature are different, and when the working time required to be maintained by the refrigeration type infrared detector 200 is different after the refrigeration of the liquid medium once, the temperature requirement of the liquid medium is also different, so that the target temperature can be adjusted according to the type, model and working time of the refrigeration type infrared detector 200.
Alternatively, the temperature detection values of the respective temperature detection devices may be manually compared to determine the liquid level of the liquid medium.
Further, in order to enable more convenient determination of the liquid level of the liquid medium in the cold storage medium container 600, the low temperature detecting apparatus may further include a liquid level determining device connected to the plurality of temperature detecting devices for determining a height corresponding to a temperature detecting device having a lower temperature detecting value as the liquid level value of the liquid medium in case that the temperature values detected by two adjacent temperature detecting devices are not equal.
Optionally, the low temperature detecting device generally includes a central processor, the liquid level determining device may be a central processor, and the plurality of temperature detecting devices may be connected to the central processor, where the central processor compares the temperature values detected by the respective temperature detecting devices, and determines, as the liquid level value of the liquid medium, a height corresponding to a temperature detecting device having a lower temperature detecting value when the temperature values detected by two adjacent temperature detecting devices are not equal. The cryogenic detection device may further comprise a display, which may be connected to the central processor, the display being adapted to display the level of the liquid medium so as to more visually see the level of the liquid medium.
In the case where the cold storage medium is a fluid medium, the low temperature detection apparatus may further include a medium delivery pipe, which may include a medium input pipe 720 and a medium output pipe 730, one end of the medium input pipe 720 is communicated with the cold storage medium container 600, the other end of the medium input pipe 720 is exposed to the outside of the low temperature detection apparatus, for example, protrudes out of the case 300, one end of the medium output pipe 730 is communicated with the cold storage medium container 600, and the other end of the medium output pipe 730 is exposed to the outside of the low temperature detection apparatus, for example, protrudes out of the case 300.
In this case, the medium inlet pipe 720 is used to communicate with the medium storage device, the medium outlet pipe 730 is used to communicate with the medium extraction device, and both the fluid medium inlet and the fluid medium extraction have dedicated pipes for facilitating the connection with the medium storage device and the medium extraction device.
The liquid medium may be liquid nitrogen, and after the vacuum degree of the inner cavity 310 of the shell meets the requirement, the liquid medium is added into the cold storage medium container 600 by using the medium input pipe 720, and in the process of adding the liquid medium, the cold storage medium container 600 may be pre-cooled first, and after the pre-cooling is finished, the liquid medium is added into the cold storage medium container 600 to a preset liquid level. In this case, the cold storage medium container 600 is pre-cooled first, so that the problem that the liquid medium cannot be introduced into the cold storage medium container 600 and waste of the liquid medium is caused due to an excessively large temperature difference between the liquid medium and the cold storage medium container 600 can be avoided.
Alternatively, the liquid medium may be first delivered to the first liquid level in the cold storage medium container 600, and after the preset time, the liquid medium may be continuously delivered to the preset liquid level in the cold storage medium container 600, where the first liquid level is less than the preset liquid level. Alternatively, the liquid medium may be delivered into the cold storage medium container 600 at a first preset flow rate for a first period of time, and then delivered into the cold storage medium container 600 at a second preset flow rate for a second period of time, the second preset flow rate being greater than the first preset flow rate, until a preset level.
The medium input pipe 720 and the medium output pipe 730 are respectively provided with a switch valve, when fluid medium needs to be added into the cold storage medium container 600 or fluid medium in the cold storage medium container 600 needs to be pumped out, the corresponding switch valves are opened, and after the fluid medium is added or the fluid medium is pumped out, the corresponding switch valves are closed.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (10)
1. A low-temperature detection device is characterized by comprising a refrigerator (100), a cold accumulation device and a refrigeration type infrared detector (200), wherein,
the refrigerator (100) is in heat conduction connection with the cold accumulation device;
the refrigeration type infrared detector (200) is connected with the cold accumulation device in a heat conduction mode.
2. The low-temperature detection device according to claim 1, further comprising a housing (300), wherein the housing (300) is provided with a housing cavity (310) and a first through hole (320) communicated with the housing cavity (310), the cold storage device is arranged in the housing cavity (310), the refrigerator (100) is arranged in the housing (300), and the refrigerator (100) is in sealing fit with the first through hole (320), so that the housing cavity (310) is sealed from the external environment of the housing (300), and part of the structure of the refrigerator (100) penetrates through the first through hole (320) and is connected with the cold storage device.
3. The cryogenic detection device of claim 2, wherein the refrigerated infrared detector (200) is disposed within the housing cavity (310), the housing (300) has a light transmissive region (330), and the refrigerated infrared detector (200) is opposite the light transmissive region (330).
4. The cryogenic detection device according to claim 2, wherein the housing (300) is further provided with a second through hole communicating with the housing cavity (310), the cryogenic detection device further comprising a vacuum valve (400), the vacuum valve (400) being provided at the second through hole, the vacuum valve (400) being adapted to be connected to a first vacuum pump, the first vacuum pump being adapted to draw air in the housing cavity (310) through the vacuum valve (400) so as to create a vacuum environment in the housing cavity (310).
5. The low temperature detection device according to claim 4, wherein the refrigerator (100) is provided with a first flange (120), a second flange (340) is provided at the first through hole (320) of the housing (300), the first flange (120) and the second flange (340) are connected to each other, so that the refrigerator (100) is connected to the housing (300), a first metal sealing ring is provided between the first flange (120) and the second flange (340), and the refrigerator (100) is in sealing fit with the housing (300) through the first metal sealing ring.
6. The cryogenic detection apparatus according to claim 2, characterized in that the cold storage device is supported to the inner wall of the housing (300) by means of support legs (500) with a gap between the cold storage device and the inner wall of the housing (300).
7. The low temperature detection device according to claim 1, characterized in that the cold storage means comprise a cold storage medium container (600), the cold storage medium container (600) being adapted to accommodate a cold storage medium, the refrigerator (100) being in thermally conductive connection with the cold storage medium container (600), the refrigerator (100) being adapted to cool the cold storage medium by means of the cold storage medium container (600) in order to store cold in the cold storage medium when the cold storage medium container (600) is filled with the cold storage medium.
8. The low temperature detection device according to claim 7, characterized in that the cold storage medium is a fluid medium, the low temperature detection device further comprising a pressure relief pipe (710), the pressure relief pipe (710) being in communication with the cold storage medium container (600), the pressure relief pipe (710) being provided with a pressure relief valve.
9. The cryogenic detection apparatus of claim 7, wherein the cold storage medium is a liquid medium, the cryogenic detection apparatus further comprising a medium delivery pipe, a plurality of temperature detection devices, and a liquid level determination device, the medium delivery pipe in communication with the cold storage medium container (600),
the plurality of temperature detection devices are arranged in the cold accumulation medium container (600) and distributed along the height direction of the cold accumulation medium container (600);
the liquid level determining device is connected with the plurality of temperature detecting devices and is used for determining the height corresponding to the temperature detecting device with the lower temperature detecting value as the liquid level value of the cold accumulation medium under the condition that the temperature values detected by two adjacent temperature detecting devices are unequal.
10. The cryogenic detection device according to claim 7, characterized in that the cold storage medium is a fluid medium, the cryogenic detection device further comprising a medium delivery pipe comprising a medium input pipe (720) and a medium output pipe (730), the medium input pipe (720) being in communication with the cold storage medium container (600), the medium output pipe (730) being in communication with the cold storage medium container (600).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117268555A (en) * | 2023-11-17 | 2023-12-22 | 合肥航谱时代科技有限公司 | Indium antimonide infrared detector for alkane gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117268555A (en) * | 2023-11-17 | 2023-12-22 | 合肥航谱时代科技有限公司 | Indium antimonide infrared detector for alkane gas |
| CN117268555B (en) * | 2023-11-17 | 2024-02-13 | 合肥航谱时代科技有限公司 | Indium antimonide infrared detector for alkane gas |
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