CN219084233U - Low temperature detection system - Google Patents
Low temperature detection system Download PDFInfo
- Publication number
- CN219084233U CN219084233U CN202223611654.7U CN202223611654U CN219084233U CN 219084233 U CN219084233 U CN 219084233U CN 202223611654 U CN202223611654 U CN 202223611654U CN 219084233 U CN219084233 U CN 219084233U
- Authority
- CN
- China
- Prior art keywords
- refrigerator
- cold storage
- temperature detection
- detection system
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The application discloses a low temperature detection system belongs to detection system technical field. The disclosed low-temperature detection system comprises a refrigerator and a plurality of low-temperature detection devices, wherein the number of the refrigerator is smaller than that of the low-temperature detection devices, the low-temperature detection devices comprise a cold accumulation component and a refrigeration type infrared detector, and the refrigeration type infrared detector is in heat conduction connection with the cold accumulation component; the refrigerator has a first state in which the refrigerator is separated from the plurality of low temperature detection devices and a second state; in the second state, the refrigerator is detachably thermally conductively connected to the cold storage component of one of the plurality of low temperature detection devices. According to the scheme, the problem that in the related art, one refrigerator can only refrigerate one refrigeration type infrared detector, so that the low-temperature detection system is high in cost is solved.
Description
Technical Field
The application belongs to the technical field of detection systems, and particularly relates to a low-temperature detection system.
Background
The refrigeration type infrared detector needs to work in a low-temperature state, and is usually refrigerated by the refrigerator, so that a low-temperature environment required by the work of the refrigeration type infrared detector is created. In the related art, the refrigerator is coupled with the refrigeration type infrared detectors, so that one refrigerator can only refrigerate one refrigeration type infrared detector, the dependence of the refrigeration type infrared detector on the refrigerator is strong, and finally the cost of the low-temperature detection system is high.
Disclosure of Invention
An object of the embodiment of the present application is to provide a low-temperature detection system, which can solve the problem that in the related art, one refrigerator can only refrigerate one refrigeration type infrared detector, resulting in higher cost of the low-temperature detection system.
In order to solve the technical problems, the application is realized as follows:
the embodiment of the application discloses a low-temperature detection system, which comprises a refrigerator and a plurality of low-temperature detection devices, wherein the number of the refrigerator is smaller than that of the low-temperature detection devices, the low-temperature detection devices comprise a cold storage component and a refrigeration type infrared detector, and the refrigeration type infrared detector is in heat conduction connection with the cold storage component; the refrigerator has a first state in which the refrigerator is separated from the plurality of low temperature detection devices and a second state; in the second state, the refrigerator is detachably thermally conductively connected to the cold storage component of one of the plurality of low temperature detection devices.
In this embodiment of the application, the cold-storage part of refrigerator and low temperature detection equipment can dismantle geothermal conduction and be connected, can refrigerate refrigeration type infrared detector in a certain time after cold-storage part stores sufficient cold volume to reduce the dependence of refrigeration type infrared detector to the refrigerator, the quantity of refrigerator is less than low temperature detection equipment's quantity, makes same refrigerator can refrigerate a plurality of low temperature detection equipment's cold-storage part, thereby reduces the use cost of refrigerator. Therefore, in the related art, the refrigerator can only refrigerate one refrigeration type infrared detector, and the problem that the low-temperature detection system has high cost is solved.
Drawings
FIG. 1 is a cross-sectional view of a cryogenic detection system disclosed in an embodiment of the present application;
fig. 2 is an enlarged view at a in fig. 1;
fig. 3 is a graph showing distribution diagrams of a pressure relief pipe, a medium input pipe, a medium output pipe and an isolation pipe according to an embodiment of the present application.
Reference numerals illustrate:
100-refrigerator, 110-first flange, 120-cold head,
200-cold storage part, 210-butt base, 211-positioning recess, 220-supporting leg,
300-a shell, 310-a second flange plate, 320-a light-transmitting window, 330-a containing space,
400-isolation tube, 410-blocking part, 411-positioning protrusion, 420-lumen,
510-pressure relief pipe, 520-medium input pipe, 530-medium output pipe, 540-vacuumizing pipe,
600-a first one-way valve,
700-refrigeration type infrared detector.
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 system, which includes a refrigerator 100 and a plurality of low temperature detection devices, the number of the refrigerator 100 being smaller than the number of the low temperature detection devices.
The refrigerator 100 is capable of generating cold for cooling. The low temperature detection device comprises a cold accumulation component 200 and a refrigeration type infrared detector 700, wherein the cold accumulation component 200 is used for storing cold energy or releasing cold energy, the refrigeration type infrared detector 700 is connected with the cold accumulation component 200 in a heat conduction mode, and the cold accumulation component 200 can refrigerate the refrigeration type infrared detector 700 by releasing cold energy, so that a low temperature environment required by the work of the refrigeration type infrared detector 700 is provided for the refrigeration type infrared detector 700.
The refrigerator 100 has a first state and a second state, and in the first state, the refrigerator 100 is separated from the plurality of low temperature detecting devices, in which case the low temperature detecting devices can individually perform infrared detection (an operator can directly control the low temperature detecting devices to perform infrared detection). Of course, after the refrigerator 100 is separated from the low temperature detection device, the low temperature detection device may be connected to a control device (for example, a control handle), and the user may control the control device, so as to control the low temperature detection device to perform infrared detection.
In the second state of the refrigerator 100, the refrigerator 100 is detachably connected with the cold accumulation member 200 of one of the plurality of low temperature detection devices through heat conduction, at this time, the refrigerator 100 is turned on, and the refrigerator 100 can refrigerate the cold accumulation member 200 connected with the refrigerator 100 through heat conduction, so that the cold accumulation member 200 stores cold, after the cold accumulation member 200 stores enough cold, the refrigerator 100 can be turned off after maintaining the normal operation of the refrigeration type infrared detector 700 for a certain period of time, and the refrigerator 100 is separated from the low temperature detection device, and then the refrigerator 100 is detachably connected with the cold accumulation member 200 of the other low temperature detection device through heat conduction, so that the other cold accumulation member 200 can refrigerate, so that the same refrigerator 100 can refrigerate the cold accumulation members 200 of the plurality of low temperature detection devices.
In this embodiment of the application, the refrigerator 100 is detachably connected with the cold accumulation component 200 of the low temperature detection device through geothermal conduction, and the cold accumulation component 200 can refrigerate the refrigeration type infrared detector 700 within a certain time after storing enough cold energy, so that the refrigerator 100 can be separated from the low temperature detection device, and the dependence of the refrigeration type infrared detector 700 on the refrigerator 100 is reduced, and the number of the refrigerators 100 is smaller than that of the low temperature detection devices, so that the same refrigerator 100 can refrigerate the cold accumulation components 200 of a plurality of low temperature detection devices, thereby reducing the configuration number of the refrigerator 100 and further reducing the configuration cost. Therefore, in the related art, the present application can solve the problem that the cost of the low-temperature detection system is high because only one refrigeration type infrared detector 700 can be refrigerated by one refrigerator 100.
In addition, in the related art, in the solution in which the refrigerator 100 directly cools the refrigerating type infrared detector 700, when the refrigerator 100 needs to continuously operate for a long time, the refrigerator 100 also needs to continuously operate for a long time, and the long time continuous operation of the refrigerator 100 may shorten the lifetime of the refrigerator 100. In the embodiment of the application, the refrigerator 100 is used for refrigerating the cold accumulation component 200 of the low temperature detection device, after the cold accumulation component 200 stores enough cold energy, the refrigerator 100 can be turned off, and the cold energy stored by the cold accumulation component 200 is used for providing cold energy for the refrigeration type infrared detector 700 in a certain time, so that the refrigerator 100 can intermittently work, and compared with the case that the refrigerator 100 continuously works for a long time, the refrigerator 100 intermittently works, so that the service life of the refrigerator 100 can be prolonged.
In the related art, when the refrigerator 100 directly cools the refrigeration type infrared detector 700, the performance requirement of the refrigerator 100 is also high. For example, the refrigerator 100 needs to provide enough and stable cold energy for the refrigeration type infrared detector 700 in real time, and if the refrigerator 100 fails during operation or the refrigerator 100 fails to operate due to power failure or the like, the refrigerator 100 cannot provide enough and stable cold energy for the refrigeration type infrared detector 700, which results in forced interruption of the operation of the refrigeration type infrared detector 700.
In the embodiment of the application, the refrigerator 100 is detachably connected with the cold accumulation component 200 of the low-temperature detection device, and the cold accumulation component 200 can maintain the operation of the refrigeration type infrared detector 700 within a certain time after storing enough cold energy, so that the performance requirement of the application on the refrigerator 100 is reduced, the technical standard of the refrigerator 100 is reduced, and the refrigerator 100 with lower purchase cost is facilitated.
Meanwhile, vibration is generated in the working process of the refrigerator 100, if the technical scheme that the refrigerator 100 in the related art directly refrigerates the refrigeration type infrared detector 700 is adopted, the vibration of the refrigerator 100 can affect the working of the refrigeration type infrared detector 700, therefore, the vibration of the refrigerator 100 needs to be reduced in the refrigeration mode, the performance requirement on the refrigerator 100 can be certainly improved, and the use cost of the refrigerator 100 is further improved.
In this embodiment of the present application, the refrigerator 100 is detachably connected with the cold storage component 200 of the low temperature detection device, so that after the refrigerator 100 completes refrigerating the cold storage component 200, the refrigerator 100 is turned off, and after the refrigerator 100 is separated from the low temperature detection device, the refrigeration type infrared detector 700 is turned on to start working, in this case, the influence of vibration of the refrigerator 100 on the working of the refrigeration type infrared detector 700 can be avoided, and thus, the requirement on the performance of the refrigerator 100 is also reduced.
In the embodiment of the present application, the number of refrigerators 100 may be one, or the number of refrigerators 100 may be plural, and the specific number of refrigerators 100 is not limited in the present application. Optionally, the number of the low-temperature detecting devices may be 3 to 15 times that of the refrigerators 100, and of course, the number of the low-temperature detecting devices and the number of the refrigerators 100 may be adjusted according to actual requirements, which is not limited in this application.
After the refrigerator 100 cools the cold storage member 200, the temperature of the cold storage member 200 is low, and if the cold storage member 200 is directly exposed to the external atmospheric environment, convection heat leakage between the cold storage member 200 and the external atmospheric environment may cause an increase in temperature of the cold storage member 200, thereby shortening the time during which the cooled cold storage member 200 can maintain the operation of the refrigeration type infrared detector 700.
To this end, in the embodiment of the present application, the low temperature detection apparatus may further include a housing 300 and an isolation tube 400, the housing 300 may be provided with a first perforation, the cold storage part 200 and the isolation tube 400 may be disposed in the housing 300, a first port of the isolation tube 400 may be in sealing abutment with the first perforation, a second port of the isolation tube 400 is blocked by the blocking part 410, the isolation tube 400, the blocking part 410 and the housing 300 form an accommodating space 330, the accommodating space 330 is isolated from a lumen 420 of the isolation tube 400, and the cold storage part 200 is disposed in the accommodating space 330.
In the second state of the refrigerator 100, a part of the structure of the refrigerator 100 passes through the first through hole and extends into the pipe cavity 420, and the refrigerator 100 is indirectly connected with the cold storage part 200 through the blocking part 410 in a heat conduction manner, so that the refrigerator 100 is connected with the cold storage part 200 in a heat conduction manner. The refrigerator 100 may include a coldhead 120, and the coldhead 120 may pass through the first aperture and be thermally conductively coupled to the cold storage component 200.
In this case, the cold storage member 200 is disposed in the case 300, so that convection heat leakage between the external environment of the case 300 and the cold storage member 200 can be reduced, the time during which the refrigeration type infrared detector 700 can be maintained after the cold storage member 200 cools can be prolonged, the pipe cavity 420 is communicated with the external environment during the process of disassembling the refrigerator 100, the accommodating space 330 is isolated from the pipe cavity 420 of the isolation pipe 400, the cold storage member 200 is disposed in the accommodating space 330, and the problem that a large amount of air flows into the case 300 when the second state is switched to the first state, so that the cold storage member 200 and the external atmosphere are caused to perform convection heat leakage can be avoided.
There are various ways of implementing the heat conduction connection between the refrigeration type infrared detector 700 and the cold storage component 200, and in an alternative embodiment, the refrigeration type infrared detector 700 may be disposed on an outer wall of the casing 300, and the refrigeration type infrared detector 700 is indirectly contacted with the cold storage component 200 through a wall of the casing 300, so as to implement heat conduction between the refrigeration type infrared detector 700 and the cold storage component 200. In another alternative embodiment, a third perforation may be formed on the housing 300, the refrigeration type infrared detector 700 may be plugged and matched with the third perforation, and the refrigeration type infrared detector is directly contacted with the cold storage component 200, so as to realize heat conduction between the refrigeration type infrared detector 700 and the cold storage component 200.
In this embodiment of the application, the refrigerating type infrared detector 700 may be disposed in the accommodating space 330 and directly fixed on the cold accumulation component 200, so as to realize thermal conduction connection between the refrigerating type infrared detector 700 and the cold accumulation component 200, and the casing 300 may have the light transmission window 320, where the refrigerating type infrared detector 700 is opposite to the light transmission window 320, so that the refrigerating type infrared detector 700 can perform infrared detection. In this case, the casing 300 can play a role of protecting the refrigeration type infrared detector 700, and simultaneously, it is more convenient to directly connect the refrigeration type infrared detector 700 with the cold storage part 200, so as to reduce the loss of cold.
The material of the light-transmitting window 320 may be K9 glass or sapphire, and of course, the material of the light-transmitting window 320 may be adjusted according to actual requirements, which does not limit the specific material of the light-transmitting window 320. Alternatively, the light-transmitting window 320 may be fixed to the housing 300 by welding, however, in other embodiments, the light-transmitting window 320 may be adhesively fixed to the housing 300.
In order to further reduce the convective heat leakage between the cold storage component 200 and the external environment, in this embodiment, the casing 300 may further be provided with a second perforation communicated with the accommodating space 330, the refrigerating device may further include a first check valve 600, the first check valve 600 may be disposed at the second perforation, the first check valve 600 is used for connecting a first vacuum pump, and the first vacuum pump is used for pumping air in the accommodating space 330 through the first check valve 600, so that a vacuum environment is formed in the accommodating space 330.
The formation of the vacuum environment in the accommodating space 330 can further reduce the convection heat leakage between the cold accumulation member 200 and the external environment, and prolong the time for which the cold accumulation member 200 can provide the refrigeration type infrared detector 700 with a low temperature environment after the cold accumulation member 200 is refrigerated.
When the accommodating space 330 is pumped to a vacuum environment, the accommodating space 330 can be pumped to a first middle preset vacuum degree by using the first vacuum pump, then the accommodating space 330 is subjected to leak detection by using the helium mass spectrometer, after the leak rate of the accommodating space 330 is smaller than the preset leak rate, the accommodating space 330 is pumped to the first preset vacuum degree by continuously using the first vacuum pump, and the first middle preset vacuum degree is smaller than the first preset vacuum degree, so that the maintenance time of the vacuum environment is prevented from being shortened due to higher leak rate of the low-temperature detection equipment. The vacuum degree of the vacuum environment in the accommodation space 330 may be 10 or less -5 Pa, that is, the first predetermined vacuum degree may be 10 or less -5 Pa。
In a further embodiment, the isolation tube 400 may be an elastic tube, and in the second state, a portion of the refrigerator 100 passing through the first perforation is abutted against the blocking portion 410, and the isolation tube 400 is in an extended state and is in contact with the cold storage member 200 through the blocking portion 410. In the first state of the refrigerator 100, the isolation tube 400 is retracted, the isolation tube 400 is in a shortened state, and the isolation tube 400 and the blocking portion 410 are separated from the cold storage member 200. In the first state of the refrigerator 100, the lumen 420 of the isolation tube 400 is in communication with the external environment, so that the blocking portion 410 is in contact with the external environment, at this time, the isolation tube 400 and the blocking portion 410 are separated from the cold storage member 200, so that heat conduction and leakage between the cold storage member 200 and the blocking portion 410 can be reduced, and the operation time of the refrigeration type infrared detector 700 can be maintained by the cold storage member 200 after the cold storage member 200 is cooled can be prolonged.
In addition, in the case where the accommodating space 330 is in a vacuum environment, the isolation tube 400 is retracted in the first state of the refrigerator 100, and the isolation tube 400 is separated from the cold accumulation member 200 in a shortened state, so that a gap exists between the isolation tube 400 and the cold accumulation member 200, and a vacuum environment is formed in the gap, thereby further reducing conduction heat leakage between the cold accumulation member 200 and the isolation tube 400.
Alternatively, the elastic tube may be a corrugated tube, and the corrugated tube may be made of stainless steel, although other materials may be used for the corrugated tube, which is not limited in this application.
The cold accumulation member 200 may include the docking base 210, one of the blocking portion 410 and the docking base 210 may include the positioning protrusion 411, the other may be provided with the positioning recess 211, for example, the blocking portion 410 may include the positioning protrusion 411, the docking base 210 may include the positioning recess 211, and in the second state of the refrigerator 100, the blocking portion 410 and the docking base 210 are connected by positioning engagement of the positioning protrusion 411 and the positioning recess 211. This structure facilitates the accurate docking of the refrigerator 100 and the cold accumulation member 200.
In a further embodiment, the positioning protrusion 411 may be a conical protrusion, and the positioning recess 211 may be a conical recess adapted to the shape of the conical protrusion. Along the direction from the conical protrusion to the conical recess, the cross-sectional area of the conical protrusion is gradually reduced, and the cross-sectional area of the conical recess is gradually reduced, so that the positioning protrusion 411 and the positioning recess 211 are more conveniently abutted, and the refrigerator 100 and the cold storage part 200 are more conveniently and indirectly abutted. The cross-sectional areas of the tapered protrusions and the tapered depressions each refer to an area of a cross-section perpendicular to the direction of movement of the refrigerator 100.
In order to achieve the accurate butt joint of the refrigerator 100 and the cold storage component 200, the blocking portion 410 may be a heavy weight, which is used to apply a pulling force to the isolation tube 400 to drive the isolation tube 400 to straighten in the expansion direction, so as to avoid the isolation tube 400 from bending at a larger angle in the first state, which affects the accurate butt joint of the refrigerator 100 and the cold storage component 200.
In the above-mentioned scheme, the refrigerator 100 is disposed in the housing 300, in order to connect the refrigerator 100 and the housing 300, the refrigerator 100 may be provided with the first flange 110, the first through hole of the housing 300 may be provided with the second flange 310, and in the second state of the refrigerator 100, the first flange 110 and the second flange 310 may be fixed by a locking member, so that the refrigerator 100 and the housing 300 are fixed. This structure is more convenient for the disassembly and assembly of the refrigerator 100. Alternatively, the locking member may be a threaded connection, such as a bolt.
When the refrigerator 100 and the low temperature detection device are connected, part of components (such as the cold head 120) of the refrigerator 100 extend into the pipe cavity 420, part of the components extending into the pipe cavity 420 compress the plugging part 410 and drive the elastic pipe to extend until the conical protrusion extends into the conical recess, the refrigerator 100 is in heat conduction connection with the cold storage component 200 through the plugging part 410 and the docking base 210, and the first flange 110 and the second flange 310 are connected through the threaded connection piece, so that the connection between the refrigerator 100 and the low temperature detection device is realized.
After the cooling of the cold storage part 200 is completed, the screw connection is unscrewed, and the elastic tube is shortened under the resilience force, so that the elastic tube is separated from the cold storage part 200, the refrigerator 100 is taken out, and the separation of the refrigerator 100 and the low temperature detection equipment is completed.
Because the shell 300 is provided with the first perforation, in order to avoid that the part of the structure of the refrigerator 100 extending into the cavity 420 is communicated with the external environment through the first perforation in the second state, so as to lead to the loss of cold, a first sealing element can be arranged between the first flange 110 and the second flange 310, so as to improve the sealing performance between the first flange 110 and the second flange 310, the refrigerator 100 seals and seals the first perforation, and the pipe cavity 420 of the isolation pipe 400 is isolated from the external environment of the shell 300. The structure can improve the sealing performance of the connection position of the refrigerator 100 and the shell 300 in the second state, and alleviate the loss of cold in the refrigerating process of the refrigerator 100. The first seal may be a rubber seal ring or a metal seal ring.
Further, the cryoprobe apparatus may further include a vacuum pipe 540, the vacuum pipe 540 may be in communication with the lumen 420, the vacuum pipe 540 may be provided with a second check valve, and the vacuum pipe 540 may be connected to a second vacuum pump such that the second vacuum pump pumps air in the lumen 420 through the second check valve. In this case, in the process of cooling the cold storage member 200 by the refrigerator 100, the convection heat leakage between the external environment and the part of the component of the refrigerator 100 extending into the pipe chamber 420 can be reduced, and the cooling speed of the cold storage member 200 can be increased.
When the vacuum environment is extracted from the lumen 420, the lumen 420 can be firstly extracted to a second middle preset vacuum degree by using a second vacuum pump, then the leak detection treatment is carried out on the lumen 420 by using a helium mass spectrometer, and after the leak rate of the lumen 420 is smaller than the preset leak rate, the second vacuum pump is continuously usedThe vacuum pump pumps the lumen 420 to a second preset vacuum level, which is less than the second preset vacuum level, avoiding shortening the maintenance time of the vacuum environment of the lumen 420 due to the higher leak rate of the lumen 420. The vacuum level of the vacuum environment within lumen 420 may be 10 or less -5 Pa, that is, the second predetermined vacuum degree may be 10 or less -5 Pa。
The low temperature detection apparatus may further include a temperature sensor and a controller, the temperature sensor may be provided at the cold storage part 200, the temperature sensor is configured to detect a temperature of the cold storage part 200, and in the second state, the controller is respectively communicatively connected to the temperature sensor and the corresponding refrigerator 100, and is configured to control the corresponding refrigerator 100 to be turned off when the temperature is lower than a preset threshold. In this case, the worker can remove the refrigerator 100 in time after the cold accumulation of the cold accumulation member 200 is completed.
Note that, the requirements of the cooling type infrared detector 700 of different types or models for the operating temperature are different, and when the operating time required to be maintained for the cooling type infrared detector 700 is different after the cooling type infrared detector 200 is cooled once, the temperature requirement for the cooling type infrared detector 200 is also different, so that the preset threshold value can be adjusted according to the type, model and operating time of the cooling type infrared detector 700.
In the embodiment of the present application, the cold storage part 200 may include a medium container for accommodating a cold storage medium for storing cold or releasing cold, and in case that the medium container is filled with the cold storage medium, the refrigerator 100 may cool the cold storage medium through the medium container 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 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 refrigeration capacity for the refrigeration type infrared detector 700, the pressure in the medium container increases due to the gasification of the liquid medium, and in the case where the cold storage medium is a gaseous medium, the pressure in the medium container also increases in the process of inputting the gaseous medium into the medium container, and potential safety hazards may be generated due to the excessive internal pressure of the medium container.
For this reason, the low temperature detecting device may further include a pressure release tube 510, one end of the pressure release tube 510 may be communicated with the medium container, and the other end of the pressure release tube 510 is exposed out of the low temperature detecting device, for example, in the case that the low temperature detecting device further includes a housing 300, the other end of the pressure release tube 510 extends out of the housing 300, the pressure release tube 510 may be provided with a pressure release valve, and the pressure release valve is automatically opened to release pressure for the medium container when the pressure in the medium container is greater than the preset pressure, so as to improve the safety performance of the low temperature detecting device.
The docking base 210 is disposed in the medium container, and the refrigerator 100 is in the second state, and the refrigerator 100 is thermally connected to the medium container through the blocking portion 410 and the docking base 210, so that the refrigerator 100 can cool the medium container, and the refrigerator 100 cools the cold storage medium through the medium container.
In the case where 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 apparatus may further include a medium delivery pipe, one end of the medium delivery pipe is connected to the medium container, and the other end of the medium delivery pipe is exposed to the outside of the low temperature detection apparatus, that is, extends out of the housing 300, and the medium delivery pipe is used for inputting the fluid medium into the medium container, so that a user may input the fluid medium into the medium container according to specific working requirements of the refrigeration type infrared detector 700.
Further, the length of the pressure relief tube 510 may be greater than the cross-sectional area of itself (i.e., the area of the cross-section perpendicular to the length direction of the pressure relief tube 510), and the length of the media delivery tube may be greater than the cross-sectional area of itself (i.e., the area of the cross-section perpendicular to the length direction of the media delivery tube), so that extending the length of the media delivery tube and the pressure relief tube 510 can reduce the heat transfer and leakage of the fluid media through the pressure relief tube 510 and the media delivery tube.
The cold storage medium may be a liquid medium, and in order to determine the volume of the liquid medium in the medium container, the liquid level of the liquid medium in the medium container may be detected, and the volume of the liquid medium may be calculated from the liquid level of the liquid medium in the medium container. 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 sensors, and the plurality of temperature sensors may be disposed within the medium container and distributed along the height direction of the medium container. Since the temperature detected by the temperature sensor in contact with the liquid medium is different from the temperature detected by the temperature sensor not in contact with the liquid medium, when the temperature values detected by the two adjacent temperature sensors are not equal to each other, the height corresponding to the temperature sensor having the lower temperature detection value can be determined as the liquid level value of the liquid medium.
In the above-described aspect, the low temperature detection device includes a temperature sensor for detecting the temperature of the cold accumulation member 200, and the temperature sensor located at the lowest level on the medium container may be used as the temperature sensor for detecting the temperature of the cold accumulation member 200. When the temperature of the liquid medium is about to be unable to meet the working requirement of the refrigeration type infrared detector 700, the refrigerator 100 is installed on the low-temperature detection device, the refrigerator 100 is started to refrigerate the liquid medium, and after the temperature of the liquid medium is lower than a preset threshold value, the refrigerator 100 is closed, and the refrigerator 100 and the low-temperature detection device are separated.
Alternatively, the temperature detection values of the respective temperature sensors 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 medium container, the low-temperature detection device may further include a liquid level determination device connected to the plurality of temperature sensors, for determining, as the liquid level value of the liquid medium, a height corresponding to a temperature sensor having a lower temperature detection value in a case where the temperature values detected by two adjacent temperature sensors are not equal.
Alternatively, the low temperature detecting device generally includes a central processing circuit, the liquid level determining device may be the central processing circuit, and the plurality of temperature sensors may be connected to the central processing circuit, where the central processing circuit compares the temperature values detected by the respective temperature sensors, and determines, as the liquid level value of the liquid medium, the height corresponding to the temperature sensor having the lower temperature detection value when the temperature values detected by the two adjacent temperature sensors are not equal. The cryogenic detection device may further comprise a display, which may be connected to the central processing circuit, for displaying the level of the liquid medium, so that the level of the liquid medium is more visually seen.
In the case that 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 520 and a medium output pipe 530, one end of the medium input pipe 520 is connected to the medium container, the other end of the medium input pipe 520 is exposed to the outside of the low temperature detection apparatus, that is, extends out of the case 300, one end of the medium output pipe 530 is connected to the medium container, and the other end of the medium output pipe 530 is exposed to the outside of the low temperature detection apparatus, that is, extends out of the case 300.
In this case, the medium input pipe 520 is used to communicate with the medium storage device, the medium output pipe 530 is used to communicate with the medium extraction device, and both the input of the fluid medium and the extraction of the fluid medium have dedicated pipes, so that the connection between the cryogenic detecting apparatus and the medium storage device and the medium extraction device is facilitated.
The liquid medium may be liquid nitrogen, and after the liquid nitrogen is refrigerated by the refrigerator 100, the liquid nitrogen may be cooled to fix nitrogen, and the cold energy is provided for the refrigeration type infrared detector 700 by utilizing the solid-liquid two-phase change and self enthalpy change heat absorption of the cold storage medium.
After the refrigerator 100 is installed in the low temperature detection device, after the vacuum degree of the accommodating space 330 meets the requirement, a liquid medium is added into the medium container by using the medium input pipe 520, in the process of adding the liquid medium, the medium container can be pre-cooled, and after the pre-cooling is finished, the liquid medium is added into the medium container to a preset liquid level. Under the condition, the precooling of the medium container can avoid the problem that the liquid medium cannot be introduced into the medium container due to overlarge temperature difference between the liquid medium and the medium container, so that the waste of the liquid medium is caused.
Optionally, the liquid medium may be first conveyed into the medium container to a first level, and after a preset time, the liquid medium is continuously conveyed into the medium container to a preset level, where the first level is less than the preset level. Alternatively, the liquid medium may be delivered into the medium container at a first predetermined flow rate during a first period of time, after which the liquid medium is subsequently delivered into the medium container at a second predetermined flow rate, which is greater than the first predetermined flow rate, during a second period of time up to the predetermined level.
The medium input pipe 520 and the medium output pipe 530 are respectively provided with a switch valve, when the fluid medium is required to be added into the medium container or the fluid medium in the medium container is required 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.
Further, the pressure relief tube 510, the medium input tube 520 and the medium output tube 530 may be distributed around the isolation tube 400, and form a deformation guiding space extending along the expansion direction of the isolation tube 400, so as to avoid the isolation tube 400 from greatly swinging or bending at a large angle in the first state, and influence the accurate butt joint of the refrigerator 100 and the cold storage component 200.
In the above-described aspect, the cold accumulation member 200 is disposed in the case 300, and in the embodiment of the present application, the cold accumulation member 200 may be supported to the inner wall of the case 300 through the leg 220, and a gap may be provided between the cold accumulation member 200 and the inner wall of the case 300. In this case, the contact area between the cold storage member 200 and the case 300 can be reduced, and the conduction heat leakage of the cold storage member 200 can be reduced, so that the cooling time of the cooling type infrared detector 700 after cooling the cold storage member 200 can be prolonged.
Further, the length of the leg 220 may be greater than the cross-sectional area of the leg 220 (i.e., the area of the cross-section perpendicular to the length direction of the leg 220), such that the distance between the cold storage member 200 and the inner wall of the case 300 is greater than the contact area of the leg 220 and the inner wall of the case 300, and extending the length of the leg 220 can further reduce the conductive heat leakage.
The low temperature sensing device may further include a heat insulating layer, which may be wrapped around the outer surface of the cold storage member 200, and in the case where the cold storage member 200 includes a medium container, the heat insulating layer may be wrapped around the outer surface of the medium container. In this case, radiation heat leakage from the external environment to the cold storage member 200 can be reduced, and the cooling time of the cooled cold storage member 200 to the cooled infrared detector 700 can be prolonged. Alternatively, the heat insulating layer may be one layer or may be multiple layers.
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 (11)
1. A low temperature detection system, characterized by comprising a refrigerator (100) and a plurality of low temperature detection devices, wherein the number of the refrigerator (100) is smaller than that of the low temperature detection devices, the low temperature detection devices comprise a cold storage component (200) and a refrigeration type infrared detector (700), and the refrigeration type infrared detector (700) is in heat conduction connection with the cold storage component (200); -the refrigerator (100) has a first state in which the refrigerator (100) is separated from the plurality of cryogenic detection devices and a second state; in the second state, the refrigerator (100) is detachably thermally conductive connected to the cold storage member (200) of one of the plurality of low temperature detection devices.
2. The cryogenic detection system according to claim 1, characterized in that the number of refrigerators (100) is one.
3. The cryogenic detection system according to claim 1, characterized in that the number of cryogenic detection devices is 3 to 15 times the number of refrigerators (100).
4. The cryogenic detection system according to claim 1, wherein the cryogenic detection device further comprises a housing (300) and an isolation tube (400), the housing (300) being provided with a first perforation, the cold storage component (200) and the isolation tube (400) being provided within the housing (300), a first port of the isolation tube (400) being in sealing abutment with the first perforation, a second port of the isolation tube (400) being blocked by a blocking portion (410), the isolation tube (400), the blocking portion (410) and the housing (300) forming a receiving space (330), the receiving space (330) being isolated from a lumen (420) of the isolation tube (400),
in the second state, part of the structure of the refrigerator (100) penetrates through the first perforation and extends into the pipe cavity (420), and the refrigerator (100) is connected with the cold storage component (200) in an indirect heat conduction mode through the plugging part (410).
5. The cryogenic detection system according to claim 4, wherein the housing (300) is further provided with a second perforation in communication with the receiving space (330), the cryogenic detection device further comprising a first one-way valve (600), the first one-way valve (600) being provided at the second perforation, the first one-way valve (600) being adapted to be connected to a first vacuum pump, the first vacuum pump being adapted to draw out air in the receiving space (330) through the first one-way valve (600) so as to create a vacuum environment in the receiving space (330).
6. The cryogenic detection system according to claim 4, characterized in that the isolation tube (400) is an elastic tube, the partial structure of the refrigerator (100) passing through the first perforation being in abutment with the blocking section (410) in the second state, the isolation tube (400) being in an elongated state and being in contact with the cold accumulation member (200) through the blocking section (410);
in the first state, the isolation pipe (400) is separated from the cold storage member (200) in a shortened state.
7. The cryogenic detection system according to claim 6, characterized in that the cold storage component (200) comprises a docking station (210), one of the plug portion (410) and the docking station (210) comprising a positioning protrusion (411), the other one being provided with a positioning recess (211), in the second state the plug portion (410) and the docking station (210) being connected by a positioning fit of the positioning protrusion (411) and the positioning recess (211).
8. The cryogenic detection system according to claim 7, characterized in that the positioning protrusion (411) is a conical protrusion and the positioning recess (211) is a conical recess adapted to the shape of the conical protrusion.
9. The cryogenic detection system according to claim 4, wherein the refrigerator (100) is provided with a first flange (110), the first perforation of the housing (300) is provided with a second flange (310), in the second state, the first flange (110) and the second flange (310) are fixed by a locking member, so that the refrigerator (100) is fixed with the housing (300), a first sealing member is provided between the first flange (110) and the second flange (310), the refrigerator (100) seals the first perforation, and the lumen (420) of the isolation tube (400) is isolated from the external environment of the housing (300).
10. The cryogenic detection system according to claim 9, characterized in that the cryogenic detection device further comprises an evacuation tube (540), the evacuation tube (540) being in communication with the lumen (420), the evacuation tube (540) being provided with a second one-way valve, the evacuation tube (540) being adapted to be connected to a second vacuum pump such that the second vacuum pump evacuates air in the lumen (420) through the second one-way valve.
11. The cryogenic detection system according to claim 1, characterized in that the cryogenic detection device further comprises a temperature sensor provided to the cold storage component (200) for detecting the temperature of the cold storage component (200), and a controller, in the second state, in communication with the temperature sensor and the respective refrigerator (100), respectively, for controlling the respective refrigerator (100) to be turned off if the temperature is below a preset threshold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611654.7U CN219084233U (en) | 2022-12-30 | 2022-12-30 | Low temperature detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611654.7U CN219084233U (en) | 2022-12-30 | 2022-12-30 | Low temperature detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219084233U true CN219084233U (en) | 2023-05-26 |
Family
ID=86400065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223611654.7U Active CN219084233U (en) | 2022-12-30 | 2022-12-30 | Low temperature detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219084233U (en) |
Cited By (1)
| 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 |
-
2022
- 2022-12-30 CN CN202223611654.7U patent/CN219084233U/en active Active
Cited By (2)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219084233U (en) | Low temperature detection system | |
| US10591188B2 (en) | Refrigeration cycle device using working fluid containing 1,1,2-trifluoroethylene (R1123) and difluoromethane (R32) | |
| CN104204697B (en) | Method for detection of loss of refrigerant | |
| US10077922B2 (en) | Compressor and refrigeration cycle device using same | |
| US20050086952A1 (en) | Refrigerator-freezer controller of refrigenator-freezer, and method for determination of leakage of refrigerant | |
| CN219284490U (en) | Low temperature detection equipment | |
| US5402112A (en) | Liquid level and temperature monitoring apparatus | |
| CN106796071B (en) | Method and system for estimating refrigerant charge loss in RVCS systems | |
| EP3431901B1 (en) | Cooling system flood prevention tool | |
| US10030919B2 (en) | Cooling apparatus for superconductor | |
| US10215451B2 (en) | Compressor and refrigeration cycle device using same | |
| JP7201447B2 (en) | How to start a cryogenic refrigerator | |
| TWI655401B (en) | Refrigeration device and temperature control module thereof | |
| JP2015049021A (en) | Refrigeration device and airtightness test method of refrigeration device | |
| CN118274518A (en) | Low-temperature detection equipment and cold storage method thereof | |
| CN218955924U (en) | Low temperature detection equipment and low temperature detection system | |
| JP5490468B2 (en) | COOLING STORAGE AND METHOD OF INSPECTING REFRIGERANT LEAK OF REFRIGERATION DEVICE | |
| CN102563787A (en) | Carbon dioxide passive refrigerating air conditioner | |
| JP7005855B2 (en) | Cooling system and how to modify the cooling system | |
| JP3469413B2 (en) | Explosion-proof freezer / refrigerator | |
| US11547023B2 (en) | Room portable blast chiller | |
| JP6621275B2 (en) | Refrigeration equipment | |
| CN215447018U (en) | Pressurized frozen core storage device | |
| CN217465054U (en) | Refrigeration device | |
| JPH11201849A (en) | Pressure detector and method for constructing freezing system using the detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |