CN105536907A - Experimental platform for low-temperature temperature bath - Google Patents
Experimental platform for low-temperature temperature bath Download PDFInfo
- Publication number
- CN105536907A CN105536907A CN201610040814.7A CN201610040814A CN105536907A CN 105536907 A CN105536907 A CN 105536907A CN 201610040814 A CN201610040814 A CN 201610040814A CN 105536907 A CN105536907 A CN 105536907A
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- China
- Prior art keywords
- temperature bath
- assembly
- vacuum dewar
- temperature
- refrigeration machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/02—Laboratory benches or tables; Fittings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/50—Cryostats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1894—Cooling means; Cryo cooling
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The invention discloses an experimental platform for a low-temperature temperature bath. The experimental platform comprises a refrigerator, a Dewar vacuum assembly and a temperature bath assembly, wherein the refrigerator is installed on the Dewar vacuum cylinder body of the Dewar vacuum assembly, the Dewar vacuum cylinder body is connected with a refrigerator mounting flange, a refrigerator cold head is positioned inside the Dewar vacuum cylinder body, and a thermal bridge, heating blocks and the temperature bath assembly are arranged in the Dewar vacuum cylinder body and at a position under the refrigerator cold head; the refrigerator cold head is connected with the temperature bath assembly through the thermal bridge; the plurality of heating blocks are symmetrically arranged on the surface of the thermal bridge; the temperature bath assembly assembly is positioned under the thermal bridge, and the long-round cylinder body of the temperature bath assembly is coaxial with the Dewar vacuum cylinder body. The experimental platform disclosed by the invention solves the problem of gas temperature regulation and control in cryogenic engineering when the pressure in the long-round cylinder body with a length more than 1000 mm is lower than standard atmospheric pressure and can uniformly control temperature in a gaseous space to be within 1K; meanwhile, structurally, a heat conduction path can be freely adjusted, and the temperature uniformity index is favorably increased.
Description
Technical field
The present invention relates to cryogenic engineering temperature regulating and control field, be specially cryogenic thermostat pond experiment porch.
Background technology
At present, in the temperature regulating and control field of cryogenic engineering, be discoid for profile, the temperature adjustment technique that diameter dimension is less than the metal solid of 400mm is mature on the whole.This is because the discoid metal structure form of minor diameter is simple, be convenient to the transmission that heat (or cold) is measured; Discoid contoured surface is convenient to the layout of heat block and is connected and fixed with the surface of low-temperature receiver refrigeration machine; And the thermal conductivity factor of solid is comparatively large, so the response time controlled is corresponding shorter.But in cryogenic engineering practice, we usually also can run into the problem needing the gas be greater than in the cylindrical body of 1000mm length to carry out temperature regulating and control.For the regular solid of minor diameter, prior art does not but have good scheme to the solution of gas temperature regulating and control problem in cylindrical body.Main cause be following some: one, the outer surface of cylindrical body is arcwall face, not easily realizes with low-temperature receiver refrigeration machine interplanar connection, need design effective compact siro spinning technology that exchanging structure could realize between the two; Two, the exchanging structure between cylindrical body and refrigeration machine makes to be no longer simple One-dimensional heat transfer between the two, and thermal conduction resistance increases more, and heat-conducting area is also no longer equal on each structural member, adds heat conducting influence factor; Three, relative to single pure solid conduction, the gaseous space that cold is delivered in cylindrical body by refrigeration machine also needs to consider heat transfer between solid and gas, thermal convection current and the heat transfer factor between gas and gas, heat exchange pattern is no longer single, complicated a lot; Four, in the response time controlled, except cylindrical body length is greater than 1000mm and makes the heat conduction path elongated increase response time, the thermal conductivity factor that the thermal conductivity factor of gas is far smaller than solid also makes the response time of control greatly increase.For above technical bottleneck, existing technical scheme obviously cannot solve.
Summary of the invention
The object of this invention is to provide a set of cryogenic thermostat pond experiment porch, carry out the problem of temperature regulating and control to solve the insurmountable oval tubular gaseous space being greater than 1000mm to length in prior art.
In order to achieve the above object, the technical solution adopted in the present invention is:
Cryogenic thermostat pond experiment porch, is characterized in that: include refrigeration machine, vacuum dewar assembly, heat bridge, heat block, temperature bath assembly; Described vacuum dewar assembly includes vacuum dewar cylindrical shell, the middle part of the two ends sidewall of vacuum dewar cylindrical shell is provided with vacuum dewar quartz glass optical window, the bottom of vacuum dewar cylindrical shell is provided with vacuum dewar base for supporting, the forward and backward sidewall of vacuum dewar cylindrical shell is respectively equipped with experiment porch air intake assembly, experiment porch goes out pneumatic module; Described temperature bath assembly includes temperature bath cylindrical body, the middle part of the two ends sidewall of temperature bath cylindrical body is provided with temperature bath quartz glass optical window, temperature bath cylindrical body is set with array temperature bath anchor ear, connected by temperature bath anchor ear connecting plate between two the temperature bath anchor ear upper surfaces often organizing temperature bath anchor ear, each temperature bath anchor ear connecting plate upper surface is respectively equipped with temperature bath pad; Described refrigeration machine is arranged on the vacuum dewar cylindrical shell of vacuum dewar assembly, vacuum dewar cylindrical shell is connected with refrigeration machine mounting flange, refrigeration machine cold head is positioned at vacuum dewar inner barrel, and the right apparent direction median plane of refrigeration machine cold head overlaps with the right apparent direction median plane of vacuum dewar cylindrical shell; Be positioned in described vacuum dewar cylindrical shell below refrigeration machine cold head and be provided with heat bridge, heat block, temperature bath assembly, but do not contact with them; Described refrigeration machine cold head is connected by heat bridge with between temperature bath assembly, and heat bridge is two pieces of bending plates be arranged symmetrically with, and one end of heat bridge connects refrigeration machine cold head, and the other end connects temperature bath pad; Described heat bridge surface has been arranged symmetrically with several heat block; Described temperature bath assembly is in immediately below heat bridge, and temperature bath cylindrical body is coaxial with vacuum dewar cylindrical shell, and the right apparent direction median plane of temperature bath cylindrical body overlaps with the right apparent direction median plane of vacuum dewar cylindrical shell.
Described cryogenic thermostat pond experiment porch, is characterized in that: all contact surfaces between described heat bridge and refrigeration machine cold head, between heat bridge and heat block, between heat bridge and temperature bath pad all fill indium sheet, and are connected by brass bolted.
Described cryogenic thermostat pond experiment porch, is characterized in that: described heat bridge, temperature bath cylindrical body, temperature bath anchor ear, temperature bath anchor ear connecting plate, temperature bath pad are red copper and process.
Described cryogenic thermostat pond experiment porch, is characterized in that: described temperature bath cylindrical body length range is 1000mm ~ 1500mm.
Described cryogenic thermostat pond experiment porch, is characterized in that: the position of described heat block, temperature bath anchor ear, temperature bath pad all can move freely independently, is convenient to regulate the heat conduction path of cryogenic thermostat pond experiment porch.
Described cryogenic thermostat pond experiment porch, it is characterized in that: described temperature bath cylindrical body inner gaseous space pressure is all the time lower than a standard atmospheric pressure, and the bulk temperature uniformity of gaseous space within the scope of 77K ~ 200K, by regulating heat conduction path and regulating the output of heating power can control within 1K.
Beneficial effect of the present invention is:
The first, the invention solves be greater than 1000mm about length in cryogenic engineering cylindrical body in pressure lower than the temperature regulating and control problem of a standard atmospheric pressure gas, and can by the thermal evenness controlling of this gaseous space within 1K;
The second, structure of the present invention achieves the effective compact siro spinning technology between cylindrical body curved surfaces and low-temperature receiver surface, the gaseous space being delivered to cylindrical body inside efficiently by low-temperature receiver for cold creates favourable condition;
Three, the function that position structural design of the present invention achieving the parts such as heat block, temperature bath anchor ear, temperature bath pad in the experiment porch of cryogenic thermostat pond all can move freely independently, be convenient to regulate the heat conduction path of cryogenic thermostat pond experiment porch, to find optimum heat conduction path, improve the temperature homogeneity index of gaseous space.
Accompanying drawing explanation
Fig. 1 a is the front view of structure of the present invention.
Fig. 1 b is the right view of structure of the present invention.
Fig. 2 a is the front view of vacuum dewar modular construction.
Fig. 2 b is the right view of vacuum dewar modular construction.
Fig. 2 c is the top view of vacuum dewar modular construction.
Fig. 3 a is the front view of the syndeton between refrigeration machine, heat bridge, temperature bath assembly, heat block.
Fig. 3 b is the right view of the syndeton between refrigeration machine, heat bridge, temperature bath assembly, heat block.
Fig. 3 c is the top view of the syndeton between refrigeration machine, heat bridge, temperature bath assembly, heat block.
Fig. 4 a is the front view of temperature bath modular construction.
Fig. 4 b is the right view of temperature bath modular construction.
Fig. 4 c is the top view of temperature bath modular construction.
Fig. 5 a is the front view of the syndeton between temperature bath anchor ear in temperature bath assembly, temperature bath anchor ear connecting plate, temperature bath pad three.
Fig. 5 b is the right view of the syndeton between temperature bath anchor ear in temperature bath assembly, temperature bath anchor ear connecting plate, temperature bath pad three.
Fig. 5 c is the top view of the syndeton between temperature bath anchor ear in temperature bath assembly, temperature bath anchor ear connecting plate, temperature bath pad three.
Fig. 6 a is the front view of heat bridge.
Fig. 6 b is the side view of heat bridge.
Detailed description of the invention
As shown in Fig. 1 a, 1b, cryogenic thermostat pond experiment porch, includes refrigeration machine 1, vacuum dewar assembly 2, heat bridge 3, heat block 4, temperature bath assembly 5.
As shown in Fig. 2 a, 2b, 2c, vacuum dewar assembly 2 includes vacuum dewar cylindrical shell 6, vacuum dewar quartz glass optical window 7, vacuum dewar base for supporting 8, experiment porch air intake assembly 9, experiment porch go out pneumatic module 10.
As shown in Fig. 4 a, 4b, 4c, temperature bath assembly 5 includes temperature bath cylindrical body 11, temperature bath quartz glass optical window 12, temperature bath anchor ear 13, temperature bath anchor ear connecting plate 14, temperature bath pad 15.
As shown in Figure 1, Figure 2 and Figure 3, on structure composition, vacuum dewar assembly 2 is placed on horizontal support face by vacuum dewar base for supporting 8, and the mounting flange of refrigeration machine 1 and the upper flange of vacuum dewar cylindrical shell 6 are sealed by O type circle, and stainless steel screw is fastening; Use two altogether in heat bridge 3 the present invention, be arranged on the cold head of refrigeration machine 1 by brass screw is symmetrical respectively; Temperature bath assembly 5 is fastenedly connected by brass bolt and brass nut and heat bridge 3; Heat block 4 amounts to four, by brass screw respectively symmetry be arranged on heat bridge 3.
As shown in Figure 2, on structure composition, two cover vacuum dewar quartz glass optical windows 7 on vacuum dewar assembly 2 are formed by O type circle and vacuum dewar cylindrical shell 6 and seal, and fastening by stainless steel screw; Vacuum dewar base for supporting 8 and vacuum dewar cylindrical shell 6 use argon arc welding to weld together; Experiment porch air intake assembly 9, experiment porch go out pneumatic module 10 and all use argon arc welding to weld together with vacuum dewar cylindrical shell 6.
As shown in Figure 4, on structure composition, temperature bath cylindrical body 11 is welded together by silver brazing with the temperature bath quartz glass optical window 12 at two ends; Temperature bath anchor ear 13 is fastenedly connected by four groups of brass bolts, nut and temperature bath cylindrical body; Temperature bath anchor ear connecting plate 14 passes through some brass screws by temperature bath anchor ear 13 compact siro spinning technology between two; Temperature bath pad 15 is placed on temperature bath anchor ear connecting plate 14 upper surface, plays connection temperature bath assembly 5 and heat bridge 3.
On assembly technology, in the cold head of parts refrigeration machine 1, heat bridge 3, heat block 4, temperature bath cylindrical body 11, temperature bath anchor ear 13, temperature bath anchor ear connecting plate 14, temperature bath pad 15, all full filling indium sheet in every contact site between two; Temperature bath cylindrical body 11 and both right sides coaxial with vacuum dewar cylindrical shell 6 overlap depending on datum level.
In the principle of work and power, cryogenic thermostat pond experiment porch mainly ensures that the negative-pressure gas temperature in the axis and radial direction of whole temperature bath cylindrical body in temperature bath cylindrical body is adjustable and controlled, and ensures certain temperature homogeneity.
Vacuum dewar component internal is high vacuum environment, and experimental gas by experiment platform air intake assembly enters in temperature bath cylindrical body, and platform goes out pneumatic module connection vavuum pump to realize the pressure adjustment of gaseous space by experiment.Refrigeration machine cold conducts to temperature bath cylindrical body by heat bridge, temperature bath pad, temperature bath anchor ear connecting plate, temperature bath anchor ear, and then ensures the temperature of gaseous space.The adjustment of temperature is realized by heat block, by regulating the power output of heat block, forming heat and resisting, and then change the temperature of whole gaseous space with refrigeration machine cold.The position of heat block, temperature bath pad, temperature bath anchor ear connecting plate, temperature bath anchor ear all can free adjustment, in order to change heat conduction path.
Claims (6)
1. cryogenic thermostat pond experiment porch, is characterized in that: include refrigeration machine, vacuum dewar assembly, heat bridge, heat block, temperature bath assembly; Described vacuum dewar assembly includes vacuum dewar cylindrical shell, the middle part of the two ends sidewall of vacuum dewar cylindrical shell is provided with vacuum dewar quartz glass optical window, the bottom of vacuum dewar cylindrical shell is provided with vacuum dewar base for supporting, the forward and backward sidewall of vacuum dewar cylindrical shell is respectively equipped with experiment porch air intake assembly, experiment porch goes out pneumatic module; Described temperature bath assembly includes temperature bath cylindrical body, the middle part of the two ends sidewall of temperature bath cylindrical body is provided with temperature bath quartz glass optical window, temperature bath cylindrical body is set with array temperature bath anchor ear, connected by temperature bath anchor ear connecting plate between two the temperature bath anchor ear upper surfaces often organizing temperature bath anchor ear, each temperature bath anchor ear connecting plate upper surface is respectively equipped with temperature bath pad; Described refrigeration machine is arranged on the vacuum dewar cylindrical shell of vacuum dewar assembly, vacuum dewar cylindrical shell is connected with refrigeration machine mounting flange, refrigeration machine cold head is positioned at vacuum dewar inner barrel, and the right apparent direction median plane of refrigeration machine cold head overlaps with the right apparent direction median plane of vacuum dewar cylindrical shell; Be positioned in described vacuum dewar cylindrical shell below refrigeration machine cold head and be provided with heat bridge, heat block, temperature bath assembly, but do not contact with them; Described refrigeration machine cold head is connected by heat bridge with between temperature bath assembly, and heat bridge is two pieces of bending plates be arranged symmetrically with, and one end of heat bridge connects refrigeration machine cold head, and the other end connects temperature bath pad; Described heat bridge surface has been arranged symmetrically with several heat block; Described temperature bath assembly is in immediately below heat bridge, and temperature bath cylindrical body is coaxial with vacuum dewar cylindrical shell, and the right apparent direction median plane of temperature bath cylindrical body overlaps with the right apparent direction median plane of vacuum dewar cylindrical shell.
2. cryogenic thermostat pond according to claim 1 experiment porch, is characterized in that: all contact surfaces between described heat bridge and refrigeration machine cold head, between heat bridge and heat block, between heat bridge and temperature bath pad all fill indium sheet, and are connected by brass bolted.
3. cryogenic thermostat pond according to claim 1 experiment porch, is characterized in that: described heat bridge, temperature bath cylindrical body, temperature bath anchor ear, temperature bath anchor ear connecting plate, temperature bath pad are red copper and process.
4. cryogenic thermostat pond according to claim 1 experiment porch, is characterized in that: described temperature bath cylindrical body length range is 1000mm ~ 1500mm.
5. cryogenic thermostat pond according to claim 1 experiment porch, is characterized in that: the position of described heat block, temperature bath anchor ear, temperature bath pad all can move freely independently, is convenient to regulate the heat conduction path of cryogenic thermostat pond experiment porch.
6. cryogenic thermostat pond according to claim 5 experiment porch, it is characterized in that: described temperature bath cylindrical body inner gaseous space pressure is all the time lower than a standard atmospheric pressure, and the bulk temperature uniformity of gaseous space within the scope of 77K ~ 200K, by regulating heat conduction path and regulating the output of heating power can control within 1K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040814.7A CN105536907A (en) | 2016-01-21 | 2016-01-21 | Experimental platform for low-temperature temperature bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040814.7A CN105536907A (en) | 2016-01-21 | 2016-01-21 | Experimental platform for low-temperature temperature bath |
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| CN105536907A true CN105536907A (en) | 2016-05-04 |
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ID=55816741
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| CN201610040814.7A Pending CN105536907A (en) | 2016-01-21 | 2016-01-21 | Experimental platform for low-temperature temperature bath |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305863A2 (en) * | 1987-08-27 | 1989-03-08 | Yasukage Oda | Temperature testing device provided with sample-receiving chamber from which a specimen is easily detachable and in which temperature is controllable |
| JPH05245395A (en) * | 1992-02-29 | 1993-09-24 | Aisin Seiki Co Ltd | Device for cooling and testing element |
| CN101320028A (en) * | 2008-05-30 | 2008-12-10 | 西安交通大学 | Experiment platform for fluid thermophysical property measurement |
| CN201244484Y (en) * | 2008-08-20 | 2009-05-27 | 济南鑫贝西生物技术有限公司 | Low-temperature biological operation bench |
| CN101957334A (en) * | 2010-09-26 | 2011-01-26 | 东南大学 | Low-temperature physical property measuring device of solid material |
| CN102323160A (en) * | 2011-07-19 | 2012-01-18 | 兰州大学 | Multi-field coupling test system for superconducting material at temperature of between 373 and 4.2K |
| CN102941131A (en) * | 2012-11-07 | 2013-02-27 | 南京航空航天大学 | Small high-low temperature tester |
| CN103495444A (en) * | 2013-10-11 | 2014-01-08 | 万鸾飞 | Low and constant temperature bath and low and constant temperature control method |
| CN105092632A (en) * | 2015-06-01 | 2015-11-25 | 中国人民解放军国防科学技术大学 | Low-temperature fluid phase-transition flow-pattern observation device and microchannel thereof |
| CN205340868U (en) * | 2016-01-21 | 2016-06-29 | 安徽万瑞冷电科技有限公司 | Low -temperature constant -temperature pond experiment platform |
-
2016
- 2016-01-21 CN CN201610040814.7A patent/CN105536907A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305863A2 (en) * | 1987-08-27 | 1989-03-08 | Yasukage Oda | Temperature testing device provided with sample-receiving chamber from which a specimen is easily detachable and in which temperature is controllable |
| JPH05245395A (en) * | 1992-02-29 | 1993-09-24 | Aisin Seiki Co Ltd | Device for cooling and testing element |
| CN101320028A (en) * | 2008-05-30 | 2008-12-10 | 西安交通大学 | Experiment platform for fluid thermophysical property measurement |
| CN201244484Y (en) * | 2008-08-20 | 2009-05-27 | 济南鑫贝西生物技术有限公司 | Low-temperature biological operation bench |
| CN101957334A (en) * | 2010-09-26 | 2011-01-26 | 东南大学 | Low-temperature physical property measuring device of solid material |
| CN102323160A (en) * | 2011-07-19 | 2012-01-18 | 兰州大学 | Multi-field coupling test system for superconducting material at temperature of between 373 and 4.2K |
| CN102941131A (en) * | 2012-11-07 | 2013-02-27 | 南京航空航天大学 | Small high-low temperature tester |
| CN103495444A (en) * | 2013-10-11 | 2014-01-08 | 万鸾飞 | Low and constant temperature bath and low and constant temperature control method |
| CN105092632A (en) * | 2015-06-01 | 2015-11-25 | 中国人民解放军国防科学技术大学 | Low-temperature fluid phase-transition flow-pattern observation device and microchannel thereof |
| CN205340868U (en) * | 2016-01-21 | 2016-06-29 | 安徽万瑞冷电科技有限公司 | Low -temperature constant -temperature pond experiment platform |
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Application publication date: 20160504 |