CN107478519B - A kind of Cryo Equipment supports heat-insulated bar cryogenic property test device and test method - Google Patents
A kind of Cryo Equipment supports heat-insulated bar cryogenic property test device and test method Download PDFInfo
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- CN107478519B CN107478519B CN201710651346.1A CN201710651346A CN107478519B CN 107478519 B CN107478519 B CN 107478519B CN 201710651346 A CN201710651346 A CN 201710651346A CN 107478519 B CN107478519 B CN 107478519B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of Cryo Equipments to support heat-insulated bar cryogenic property test device, including pedestal, vacuum tank, axially mounted component and radially installed component, axially mounted component mainly provides axial tension, radially installed component mainly provides low temperature environment, axially mounted component includes the first heat-insulated bar of support, cold plate, the second heat-insulated bar of support, load pull rod and loading device, unidirectional or three-dimensional low temperature foil gauge and unidirectional or three-dimensional room temperature foil gauge are respectively arranged on the heat-insulated bar of first support and the second heat-insulated bar of support, radially installed component includes the heat insulation support seat in vacuum tank, cold plate, cold bridge device and cryocooler cold head, heating sheet is provided on cryocooler cold head；The invention also discloses its test methods；Structure of the invention is ingenious reliable, meets Cryo Equipment and supports the mechanical property of heat-insulated bar and leakage Thermal test demand, test result that can provide technical support for the master-plan of Cryo Equipment.
Description
Technical field
The invention belongs to material properties test technical fields, and in particular to a kind of heat-insulated bar low temperature properties of Cryo Equipment support
Energy test device and its test method, in simulating examination low-temperature vacuum environment, Cryo Equipment to support heat-insulated bar in low temperature
Under intensity and leakage heat.
Background technique
For it is certain run on the equipment of profound hypothermia for, be usually in the low temperature environment for place it into heat-insulation vacuum, and
It is linked together with the structural member under normal temperature state using the heat-insulated bar of support.Supporting heat-insulated bar is the pass of Cryo Equipment
Key member plays the role of insulation, load bearing equipment weight and undertakes certain load, therefore same in the design for supporting heat-insulated bar
When take into account intensity and leak the requirement of hot these two aspects.I.e. in the design process for supporting heat-insulated bar, following factor need to be considered: 1) leading to
Structure design is crossed, making it at low ambient temperatures has enough intensity；2) by dimensionally-optimised design, lower leakage is made it have
Heat, with this come meet cryogenic refrigerating system to leakage heat general requirement.
Currently, the cold performance test device that domestic testing machine factory provides generally is transformed by universal testing machine, and
The intensity being only capable of under test liquid nitrogen environment (77K) cannot test leakage heat.For it is certain apply to the equipment at a temperature of 30K for,
The experimental rig obviously has been unable to meet performance test demand.
Based on this, propose that a kind of Cryo Equipment supports heat-insulated bar cryogenic property test device, which can not only
Supported under enough feasible simulation 30K low temperature environments the true stress of heat-insulated bar and working condition (one end is low temperature 30K, and one end is room temperature,
Certain axial tension is born simultaneously), and temperature, strain, pulling force and the leakage heat etc. for supporting heat-insulated bar can be tested,
Relevant parameter is obtained, heat request to verify the intensity for supporting heat-insulated bar whether to be able to satisfy Cryo Equipment and is leaked with this, is set for low temperature
Standby master-plan provides technical support.
Summary of the invention
An object of the present invention is insufficient according to prior art, the true stress in conjunction with Cryo Equipment and the shape that works
State, designs a kind of heat-insulated bar cryogenic property test device of Cryo Equipment support, and test device disclosed by the invention can expire simultaneously
The examination demand of (30K) intensity and leakage heat under sufficient low temperature environment.
The technical solution adopted by the present invention to solve the technical problems is: a kind of heat-insulated bar low temperature properties of Cryo Equipment support
Can test device, including pedestal, vacuum tank, axially mounted component and the radially installed component being arranged in vacuum tank,
The axially mounted component include in the horizontal direction the heat-insulated bar of coaxial sequentially connected first support, cold plate, the second support every
Hot rod and load pull rod, the heat-insulated bar of the first support, cold plate and the second heat-insulated bar of support are arranged in vacuum tank, described
Load pull rod pass through vacuum tank and with vacuum tank be tightly connected, the axially mounted component further include be arranged in pedestal
Loading device that is upper and being fixedly connected with the extension end of load pull rod, the other end and vacuum of the first heat-insulated bar of support hold
The inner wall of device is connected, the connecting pin of the heat-insulated bar of described first support and the heat-insulated bar of the second support and cold plate be provided with it is unidirectional or
Three-dimensional low temperature foil gauge, the connecting pin and the heat-insulated bar of the second support of the heat-insulated bar of the first support and vacuum tank and load
It includes the vertical radial direction along cold plate that the connecting pin of pull rod, which is provided with unidirectional or three-dimensional room temperature foil gauge, the radially installed component,
The sequentially connected heat insulation support seat in direction, cold plate, cold bridge device and cryocooler cold head, the heat insulation support seat are fixed at
On the inner wall of vacuum tank, heating sheet is provided on the cryocooler cold head.
The loading device includes first connecting rod and the second connecting rod arranged side by side, the first connecting rod and
The both ends of second connecting rod are fixedly installed first crossbeam and second cross beam respectively, and the first crossbeam is stretched with load pull rod
Outlet is fixedly connected, and the jack being fixedly connected on pedestal is provided between the first crossbeam and second cross beam, described
Second cross beam on be provided with the pressure sensor being used cooperatively with jack.
The cold bridge device is formed by multiple sheet coppers for being bent into U-shaped are stacked.
The sealing baffle being used cooperatively with load pull rod is further fixedly arranged on the vacuum tank, the vacuum is held
The one 0 type sealing ring is provided between device and load pull rod and between vacuum tank, load pull rod and sealing baffle.
The vacuum tank includes cabinet and the cover board that connect with box sealing, the cabinet include frame, take out it is true
Empty connector, aviation socket and cryocooler cold head seat, the cryocooler cold head seat and cryocooler cold head are tightly connected.
The heat-insulated bar of first support, cold plate, cryocooler cold head, cold bridge device, heat insulation support seat and second support heat-insulated bar
Aluminium plating terylene film is enclosed on outer surface.
The heat insulation support seat is glass fiber reinforced plastics composite material part, heatpiston's part or multi-hole material workpiece.
The second object of the present invention is to provide a kind of test of the heat-insulated bar cryogenic property test device of Cryo Equipment support
Method, comprising the following steps:
A) by the cabinet of vacuum tank, cold plate, cold bridge device, cryocooler cold head, heating sheet, the first heat-insulated bar of support, the
The heat-insulated bar of two supports, load pull rod, the one 0 type sealing ring and sealing baffle are assembled together, and do not have to assembly heat insulation support seat, with
Cold plate, cold bridge device, cryocooler cold head, the heat-insulated bar of the first support and the second heat-insulated bar of support are wrapped in aluminium plating terylene film afterwards
Outer surface, and cover the cover board of vacuum tank；
B) by vacuumizing joint, vacuum tank is vacuumized, and vacuum degree is maintained into certain level；
C) refrigeration machine and heating sheet are opened, temperature is stablized after 30K, according to the refrigerating capacity and heating sheet under refrigeration machine 30K
Heating amount, be back-calculated to obtain the leakage heat of the heat-insulated bar of the first support and the second heat-insulated bar of support；
D) refrigeration machine and heating sheet are closed, the cover board of vacuum tank is opened, after rising again, heat insulation support seat is assembled, wraps
After aluminium plating terylene film, the cover board of vacuum tank is covered, and loading device and load pull rod are linked together, complete test dress
The assembly set；
E) after vacuumizing, refrigeration machine is opened, temperature is stablized in 30K, then by loading device to the first heat-insulated bar of support
Apply axial tension with the second heat-insulated bar of support, tests its surface strain, assess its intensity according to test result.
The beneficial effects of the present invention are:
For the cold bridge device of test device of the present invention using the multilayer U-shaped thin-walled cold bridge being superimposed, being conducive to will be cold
While amount passes to cold plate, the rigidity of cold bridge device is reduced, avoids destroying cryocooler cold head during loading.Meanwhile it is logical
True stress and working condition that simulation supports heat-insulated bar in certain Cryo Equipment are crossed, tests and supports the power of heat-insulated bar at low temperature
Performance and leakage heat are learned, relevant parameter is obtained, the intensity and leakage that support heat-insulated bar whether to be able to satisfy Cryo Equipment are demonstrated with this
Heat request.Structure of the invention is ingenious reliable, meets mechanical property and leakage Thermal test demand that Cryo Equipment supports heat-insulated bar,
Test result can provide technical support for the master-plan of Cryo Equipment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the vacuum tank and load pull rod installation partial enlargement diagram of apparatus of the present invention；
Fig. 3 and Fig. 4 is the structural schematic diagram of vacuum tank of the present invention；
Fig. 5 is the structural schematic diagram of the vacuum tank cabinet of apparatus of the present invention；
Fig. 6 is the structural schematic diagram of the loading device of apparatus of the present invention；
Fig. 7 is the structural schematic diagram of the cold bridge device of apparatus of the present invention.
Each appended drawing reference are as follows: 1-vacuum tank, 101-cabinets, the 102-the 20 type sealing ring, 103-cover boards, 104-
Cabinet and cover board installation bolt, 105-cabinets and cover board installation gasket, 1011-frames, 1012-vacuumizing joints, 1013-
Aviation socket, 1014-cryocooler cold head seats, the 2-the first heat-insulated bar of support, 3-cold plates, 4-heating sheets, 5-refrigeration machines are cold
Head, 6-cold bridge devices, the 61-the first cold bridge, the 62-the second cold bridge, 63-third cold bridges, 7-aluminium plating terylene films, 8-is heat-insulated
Support base, the 9-the second heat-insulated bar of support, the 10-the one 0 type sealing ring, 11-sealing baffles, 12-load pull rods, 13-bottoms
Seat, 14-loading devices, 141-first crossbeams, 142-first connecting rods, the 143-the second connecting rod, 144-second cross beams,
145-crossbeams and connecting rod install bolt, and 146-crossbeams and connecting rod install gasket, and 147-pressure sensors, 148-is very heavy
Top, 15-sealing baffles install bolt, and 16-sealing baffles install gasket.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Shown in referring to Figure 1 to Figure 7, the invention discloses a kind of Cryo Equipments to support heat-insulated bar cryogenic property test dress
It sets, it is described including pedestal 13, vacuum tank 1, axially mounted component and the radially installed component being arranged in vacuum tank 1
Vacuum tank 1 and pedestal 13 be fixed on test platform.
The vacuum tank 1 includes cabinet 101 and cover board 103, is provided between the cabinet 101 and cover board 103
2nd 0 type sealing ring 102, the cover board 103 install bolt 104, cabinet and cover board by cabinet and cover board and install gasket 105
It is fixedly connected on cabinet 101.The cabinet 101 includes frame 1011, vacuumizing joint 1012, aviation socket 1013 and system
Cold cold head seat 1014, the cryocooler cold head seat 1014 are connected by metal o-ring and the sealing of bolt and cryocooler cold head 5
It connects.
The axially mounted component include in the horizontal direction the heat-insulated bar 2 of coaxial sequentially connected first support, cold plate 3,
The heat-insulated bar 9 of second support and load pull rod 12, the heat-insulated bar 2 of the first support, cold plate 3 and the second heat-insulated bar 9 of support are arranged
In vacuum tank 1, the load pull rod 12 passes through vacuum tank 1, is further fixedly arranged on and adds on the vacuum tank 1
Carry the sealing baffle 11 that is used cooperatively of pull rod 12, between the vacuum tank 1 and load pull rod 12 and vacuum tank 1 plus
It carries and is provided with the one 0 type sealing ring 10 between pull rod 12 and sealing baffle 11.The sealing baffle 11 passes through sealing baffle
Installation bolt 15 and sealing baffle installation gasket 16 are fixedly connected on vacuum tank 1.
The axially mounted component further includes being arranged on pedestal 13 and being fixedly connected with the extension end of load pull rod 12
Loading device 14.The loading device 14 includes first connecting rod 142 and the second connecting rod 143 arranged side by side, described
First connecting rod 142 and the both ends of the second connecting rod 143 bolt 145, crossbeam and connecting rod are installed by crossbeam and connecting rod
Installation gasket 146 is fixedly installed first crossbeam 141 and second cross beam 144, the first crossbeam 141 and load pull rod respectively
12 extension end is bolted to connection, and is provided with and is fixedly connected between the first crossbeam 141 and second cross beam 144
Jack 148 on pedestal 13 is provided with the pressure sensor being used cooperatively with jack 148 on the second cross beam 144
147.When applying oil pressure to jack 148, the jacking system of jack 148 will drive the second cross by pressure sensor 147
Beam 144, and then apply axial tension to the heat-insulated bar 2 of the first support and the second heat-insulated bar 9 of support.
The other end of the heat-insulated bar 2 of described first support is connected with the inner wall of vacuum tank 1, described first support every
Hot rod 2 and the second heat-insulated bar 9 of support are low for the heat-insulated bar low-temperature end of the first support and the second heat-insulated bar of support with the connecting pin of cold plate 3
The outer surface of Wen Duan, the heat-insulated bar low-temperature end of the first support and the second heat-insulated bar low-temperature end of support is provided with unidirectional or three-dimensional
Low temperature foil gauge, the heat-insulated bar 2 of the first support and the connecting pin of vacuum tank 1 and the heat-insulated bar 9 of the second support and load
The connecting pin of pull rod 12 is the first support heat-insulated bar room temperature end and the second support heat-insulated bar room temperature end, and first support is heat-insulated
The outer surface at bar room temperature end and the second support heat-insulated bar room temperature end is provided with unidirectional or three-dimensional room temperature foil gauge.
The radially installed component includes the sequentially connected heat insulation support seat 8 of vertical radial direction, the cold plate along cold plate 3
3, cold bridge device 6 and cryocooler cold head 5, the heat insulation support seat 8 is fixed on the inner wall of vacuum tank 1, described
Heating sheet 4 is bolted on cryocooler cold head 5, the electric current of the heating sheet 4 is by aviation plug 1013 by outside
Power supply power supply.The heat insulation support seat 8 is glass fiber reinforced plastics composite material part, heatpiston's part or multi-hole material workpiece, is used to support
The weight of cold plate 3 avoids the heat-insulated bar 2 of the first support and the second heat-insulated bar 9 of support from generating additional load.The cold bridge device 6
The first cold bridge 61, the second cold bridge 62 and third cold bridge 63 including the U-shaped being superposed, first cold bridge 61, second
Cold bridge 62 and third cold bridge 63 are bent by sheet copper.
The heat-insulated bar 2 of described first support, cold plate 3, cryocooler cold head 5, cold bridge device 6, heat insulation support seat 8 and second
It supports and is enclosed with aluminium plating terylene film 7 on the outer surface of heat-insulated bar 9.
The axially mounted component mainly provides axial tension, and the radially installed component mainly provides low temperature ring
Border is used to the practical connection status of the first support of simulation heat-insulated bar 2 and the second heat-insulated bar 9 of support, convenient for accurate test first
Support the performance of heat-insulated bar 2 and the second heat-insulated bar 9 of support；It is simultaneously the heat-insulated bar 2 of the first support of monitoring and the second heat-insulated bar 9 of support
Ess-strain, be disposed with unidirectional or three in the outer surface of the first heat-insulated bar low-temperature end of support and the second heat-insulated bar low-temperature end of support
To low temperature foil gauge, unidirectionally mistake is disposed in the outer surface at the first support heat-insulated bar room temperature end and the second support heat-insulated bar room temperature end
Three-dimensional room temperature foil gauge, all leads pass through aviation plug 1013 and draw.
The invention also discloses the test methods that a kind of Cryo Equipment supports heat-insulated bar cryogenic property test device, including
Following steps:
A) by the cabinet of vacuum tank 101, cold plate 3, cold bridge device 6, cryocooler cold head 5, heating sheet 4, first support every
Hot rod 2, second supports heat-insulated bar 9, load pull rod 12, the one 0 type sealing ring 10 and sealing baffle 11 to be assembled together, and does not have to dress
With heat insulation support seat 8, then with aluminium plating terylene film 7 be wrapped in cold plate 3, cold bridge device 6, cryocooler cold head 5, first support every
The outer surface of hot rod 2 and the second heat-insulated bar 9 of support, and cover the cover board 103 of vacuum tank；
B) by vacuumizing joint 1012, vacuum tank 1 is vacuumized, and vacuum degree is maintained into certain level；
C) refrigeration machine and heating sheet 4 are opened, temperature is stablized after 30K, according to the refrigerating capacity and heating under refrigeration machine 30K
The heating amount of piece 4 is back-calculated to obtain the leakage heat of the first support heat-insulated bar 2 and the second heat-insulated bar 9 of support；
D) refrigeration machine and heating sheet 4 are closed, the cover board 103 of vacuum tank is opened, after rising again, assembles heat insulation support seat 8,
After wrapping aluminium plating terylene film 7, the cover board 103 of vacuum tank is covered, and loading device 14 and load pull rod 12 are connected to one
It rises, completes the assembly of experimental rig；
E) after vacuumizing, refrigeration machine is opened, temperature is stablized in 30K, then heat-insulated to the first support by loading device 14
Bar 2 and the second heat-insulated bar 9 of support apply axial tension, test its surface strain, assess its intensity according to test result.
The above-described embodiments merely illustrate the principles and effects of the present invention, and the embodiment that part uses, for
For those skilled in the art, without departing from the concept of the premise of the invention, can also make it is several deformation and
It improves, these are all within the scope of protection of the present invention.
Claims (8)
1. a kind of Cryo Equipment supports heat-insulated bar cryogenic property test device, it is characterised in that: hold including pedestal (13), vacuum
Device (1), axially mounted component and the radially installed component being arranged in vacuum tank (1), the axially mounted component packet
The heat-insulated bar (2) of coaxial sequentially connected first support, cold plate (3), the heat-insulated bar (9) of the second support and load in the horizontal direction is included to draw
Bar (12), the heat-insulated bar (2) of the first support, cold plate (3) and heat-insulated bar (9) setting of the second support are interior in vacuum tank (1),
The load pull rod (12) passes through vacuum tank (1) and is tightly connected with vacuum tank (1), and the axially mounted component is also
The loading device (14) being fixedly connected including setting on pedestal (13) and with the extension end of load pull rod (12), described first
The other end of heat-insulated bar (2) and the inner wall of vacuum tank (1) is supported to be connected, the heat-insulated bar (2) of the first support and second
The connecting pin of heat-insulated bar (9) and cold plate (3) is supported to be provided with unidirectional or three-dimensional low temperature foil gauge, the first heat-insulated bar of support
(2) connecting pin with the connecting pin of vacuum tank (1) and the heat-insulated bar (9) of the second support and load pull rod (12) is provided with unidirectionally
Or three-dimensional room temperature foil gauge, the radially installed component include along cold plate (3) vertical radial direction it is sequentially connected heat-insulated
Support base (8), cold plate (3), cold bridge device (6) and cryocooler cold head (5), the heat insulation support seat (8) are fixed at very
On the inner wall of empty container (1), heating sheet (4) are additionally provided on the cryocooler cold head (5).
2. a kind of Cryo Equipment according to claim 1 supports heat-insulated bar cryogenic property test device, which is characterized in that
The loading device (14) includes first connecting rod arranged side by side (142) and the second connecting rod (143), and described first connects
The both ends of extension bar (142) and the second connecting rod (143) are fixedly installed first crossbeam (141) and second cross beam (144), institute respectively
The first crossbeam (141) stated is fixedly connected with the extension end of load pull rod (12), the first crossbeam (141) and second cross beam
(144) jack (148) being fixedly connected on pedestal (13) is provided between, the second cross beam is provided on (144)
The pressure sensor (147) being used cooperatively with jack (148).
3. a kind of Cryo Equipment according to claim 2 supports heat-insulated bar cryogenic property test device, which is characterized in that
The cold bridge device (6) is formed by multiple sheet coppers for being bent into U-shaped are stacked.
4. a kind of Cryo Equipment according to claim 3 supports heat-insulated bar cryogenic property test device, which is characterized in that
The sealing baffle (11) being used cooperatively with load pull rod (12) is further fixedly arranged on the vacuum tank (1), described is true
It is all provided between empty container (1) and load pull rod (12) and between vacuum tank (1), load pull rod (12) and sealing baffle (11)
It is equipped with the one 0 type sealing ring (10).
5. a kind of Cryo Equipment according to claim 4 supports heat-insulated bar cryogenic property test device, which is characterized in that
The vacuum tank (1) includes cabinet (101) and the cover board (103) with cabinet (101) sealed connection, the cabinet
It (101) include frame (1011), vacuumizing joint (1012), aviation socket (1013) and cryocooler cold head seat (1014), it is described
Cryocooler cold head seat (1014) and cryocooler cold head (5) be tightly connected.
6. a kind of Cryo Equipment according to claim 5 supports heat-insulated bar cryogenic property test device, which is characterized in that
The first heat-insulated bar (2) of support, cold plate (3), cryocooler cold head (5), cold bridge device (6), heat insulation support seat (8) and second support every
Aluminium plating terylene film (7) are enclosed on the outer surface of hot rod (9).
7. a kind of Cryo Equipment according to claim 6 supports heat-insulated bar cryogenic property test device, which is characterized in that
The heat insulation support seat (8) is glass fiber reinforced plastics composite material part, heatpiston's part or multi-hole material workpiece.
8. a kind of Cryo Equipment as claimed in claim 4 supports the test method of heat-insulated bar cryogenic property test device,
It is characterized in that, comprising the following steps:
A), by the cabinet of vacuum tank (101), cold plate (3), cold bridge device (6), cryocooler cold head (5), heating sheet (4), first
Support heat-insulated bar (2), the heat-insulated bar (9) of the second support, load pull rod (12), the one 0 type sealing ring (10) and sealing baffle (11)
It is assembled together, does not have to assembly heat insulation support seat (8), be then wrapped in cold plate (3), cold bridge device with aluminium plating terylene film (7)
(6), cryocooler cold head (5), the heat-insulated bar (2) of the first support and second support the outer surface of heat-insulated bar (9), and cover vacuum tank
Cover board (103)；
B), by vacuumizing joint (1012), vacuum tank (1) is vacuumized, and vacuum degree is maintained into certain level；
C), refrigeration machine and heating sheet (4) are opened, temperature is stablized after 30K, according to the refrigerating capacity and heating sheet under refrigeration machine 30K
(4) heating amount is back-calculated to obtain the leakage heat of the heat-insulated bar of the first support (2) and the second heat-insulated bar (9) of support；
D), refrigeration machine and heating sheet (4) are closed, the cover board (103) of vacuum tank is opened, after rising again, assembles heat insulation support seat
(8), after wrapping aluminium plating terylene film (7), the cover board (103) of vacuum tank is covered, and by loading device (14) and load pull rod
(12) it links together, completes the assembly of experimental rig；
E), after vacuumizing, refrigeration machine is opened, temperature is stablized in 30K, then by loading device (14) to the first heat-insulated bar of support
(2) and the second heat-insulated bar (9) of support applies axial tension, tests its surface strain, assesses its intensity according to test result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710651346.1A CN107478519B (en) | 2017-08-02 | 2017-08-02 | A kind of Cryo Equipment supports heat-insulated bar cryogenic property test device and test method |
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| CN201710651346.1A CN107478519B (en) | 2017-08-02 | 2017-08-02 | A kind of Cryo Equipment supports heat-insulated bar cryogenic property test device and test method |
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| CN107478519A CN107478519A (en) | 2017-12-15 |
| CN107478519B true CN107478519B (en) | 2019-06-07 |
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| CN111487136B (en) * | 2020-04-28 | 2023-04-18 | 滁州市永通交通设备有限公司 | Aluminum honeycomb panel rigidity testing arrangement based on external environment simulation |
| CN114383811B (en) * | 2022-01-17 | 2022-11-11 | 中国科学院上海微系统与信息技术研究所 | Optical self-alignment extremely-low-temperature test system |
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