CN214538921U - Auxiliary device for testing low-temperature mechanical properties of material - Google Patents
Auxiliary device for testing low-temperature mechanical properties of material Download PDFInfo
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- CN214538921U CN214538921U CN202120058986.3U CN202120058986U CN214538921U CN 214538921 U CN214538921 U CN 214538921U CN 202120058986 U CN202120058986 U CN 202120058986U CN 214538921 U CN214538921 U CN 214538921U
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Abstract
The utility model provides an auxiliary device for material low temperature mechanical properties tests, include: the device comprises a cylinder body, wherein a vacuum interlayer is formed between the inner wall and the outer wall of the cylinder body, low-temperature liquid is filled in the cylinder body, and a clamping arm of a material testing machine, a mechanical support of the material testing machine and a sample are arranged in the cylinder body; and the observation window assembly is arranged in the cylinder body so as to observe the low-temperature mechanical property test process of the sample in the cylinder body. The utility model provides an auxiliary device for testing mechanical properties of materials at low temperature, through setting up the observation window subassembly, has realized the visualization of the mechanical properties testing process of materials at low temperature; simultaneously the utility model provides an auxiliary device accessible for material low temperature mechanical properties tests uses different low temperature working mediums, realizes the visualization of the material low temperature mechanical properties test process of different low temperature warm areas, provides technical support for the evaluation of material mechanical properties, the research of material damage process and the optimal control of material technology under the low temperature environment.
Description
Technical Field
The utility model relates to a mechanical properties of material tests technical field, especially relates to an auxiliary device for mechanical properties of material low temperature tests.
Background
With the development of the fields of aerospace, nuclear fusion energy, hydrogen energy, application superconductivity, gas industry, some large scientific engineering and the like in China, more and more projects related to low-temperature engineering are provided, the requirements of the fields on low-temperature materials are more and more large, and meanwhile, the requirements on performance data of the low-temperature materials are more and more comprehensive.
The low-temperature material refers to metal and alloy materials thereof which are suitable for being used from below zero to absolute zero. The material works in a low-temperature environment, and various mechanical properties of the material are greatly different from those of the material in a normal-temperature environment. The mechanical property of the material is an important performance index of the material or a workpiece in engineering, and the mechanical property of the tested material at low temperature has important significance for the research and optimization modification of the low-temperature performance of the material and is also important for the design and safe use of low-temperature components.
At present, the common low-temperature environment is mostly obtained by adopting a liquid nitrogen (-196 ℃) refrigeration method. The low-temperature mechanical support and a sample to be tested are soaked in a liquid nitrogen testing device for testing, so that various low-temperature mechanical performance indexes of the material are obtained. However, the existing testing device is made of low-temperature stainless steel materials, and the change processes of material testing, such as deformation, delamination, damage expansion and the like, cannot be directly observed in the testing process, so that the further research on the low-temperature performance of the material is hindered.
SUMMERY OF THE UTILITY MODEL
The utility model provides an auxiliary device for material low temperature mechanical properties tests for solve the unable direct observation material mechanical properties test change process's of testing arrangement defect among the prior art.
The utility model provides an auxiliary device for material low temperature mechanical properties tests, include: the device comprises a cylinder body, a vacuum interlayer is formed between the inner wall and the outer wall of the cylinder body, low-temperature liquid is filled in the cylinder body, and a clamping arm of a material testing machine, a mechanical support of the material testing machine and a sample are arranged in the cylinder body; and the observation window assembly is arranged in the cylinder body so as to observe the low-temperature mechanical property test process of the sample in the cylinder body.
According to the utility model provides a pair of an auxiliary device for material cryomechanical properties tests, the barrel includes: an inner cylinder filled with the cryogenic liquid; the outer cylinder is sleeved outside the inner cylinder; the sealing flange is covered at the tops of the inner cylinder and the outer cylinder so as to form a closed space in the space between the inner cylinder and the outer cylinder; the sealing flange is characterized in that a through hole is formed in the center of the sealing flange, and the size of the through hole is matched with that of the inner cylinder, so that the inner cylinder is opened.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests, the observation window subassembly includes: the first observation window assembly is arranged on the outer wall of the inner barrel; and the second observation window component is arranged on the outer wall of the outer barrel and is coaxially arranged with the first observation window component.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests, first observation window subassembly includes: the first cylinder is arranged on the outer wall of the inner cylinder; the first quartz glass is hermetically arranged in the first cylinder; the first cylinder is made of kovar alloy, or the first cylinder and the first quartz glass are connected in a sealing mode through a kovar alloy layer.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests, the second observation window subassembly includes: the second cylinder is arranged on the outer wall of the outer cylinder and is coaxial with the first cylinder; and the second quartz glass is hermetically arranged in the second cylinder.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests, the second observation window subassembly includes: the third cylinder is arranged on the outer wall of the outer cylinder and is coaxial with the first cylinder; the free flange is connected with the third cylinder; and the third quartz glass is arranged in the free flange.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties test still includes a plurality of sealing washers, the lateral wall of third barrel is formed with first seal groove, the lateral wall of free flange is formed with the second seal groove, and is a plurality of the sealing washer sets up respectively first seal groove with in the second seal groove, and respectively with two sides of third quartz glass contact.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests still includes the vacuum seal and takes out the mouth, sets up the outer wall of urceolus.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests still includes: a recovery channel, a first end of which is connected with the inner cylinder and a second end of which extends to the outside of the outer cylinder; and the low-temperature valve is arranged at the second end of the recovery channel.
According to the utility model provides a pair of an auxiliary device for material low temperature mechanical properties tests still includes that the cryrogenic container is with high vacuum multilayer heat insulating material, the cryrogenic container is with high vacuum multilayer heat insulating material cladding in the outer wall and the bottom surface of inner tube.
The utility model provides an auxiliary device for testing mechanical properties of materials at low temperature, through setting up the observation window subassembly, has realized the visualization of the mechanical properties testing process of materials at low temperature; simultaneously the utility model provides an auxiliary device accessible for material low temperature mechanical properties tests uses different low temperature working mediums, realizes the visualization of the material low temperature mechanical properties test process of different low temperature warm areas, provides technical support for the evaluation of material mechanical properties, the research of material damage process and the optimal control of material technology under the low temperature environment.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an auxiliary device for testing low-temperature mechanical properties of a material provided by the present invention;
fig. 2 is a partially enlarged view at a shown in fig. 1;
reference numerals:
10: an inner barrel; 11: an outer cylinder; 12: sealing the flange;
13: vacuum sealing and opening drawing; 14: a recovery channel; 15: a low temperature valve;
16: a handle; 20: a first cylinder; 21: a first quartz glass;
22: a kovar alloy layer; 30: a third cylinder; 31: a free flange;
32: a third quartz glass; 33: and (5) sealing rings.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model discloses an auxiliary device for material low temperature mechanical properties tests is described below with reference to fig. 1.
The embodiment of the utility model provides an auxiliary device for material low temperature mechanical properties tests, include: barrel and observation window subassembly. A vacuum space is formed between the inner wall and the outer wall of the cylinder, low-temperature liquid is filled in the cylinder, and a clamping arm of the material testing machine, a mechanical support of the material testing machine and a sample are arranged in the cylinder so as to test the mechanical property of the sample at low temperature. The observation window assembly is arranged on the outer wall of the cylinder body so as to observe the test process of the low-temperature mechanical property of the sample.
Particularly, an interlayer formed between the inner wall and the outer wall of the cylinder body is vacuumized, so that a sealed vacuum interlayer is formed between the inner wall and the outer wall of the cylinder body, heat leakage can be effectively reduced, evaporation of low-temperature liquid in the cylinder body is reduced, and a low-temperature environment is provided for testing the low-temperature mechanical property of the material. Further, the cryogenic liquid may be liquid nitrogen, or may be liquid helium, among other cryogenic liquids. In an embodiment of the invention, optionally, the cryogenic liquid is liquid nitrogen. Further, in the present embodiment, the low-temperature mechanical property test of the material refers to the mechanical property test of the material at-196 ℃.
Furthermore, the cylinder body is made of low-temperature steel materials, can be suitable for a low-temperature environment, and the inner surface and the outer surface of the cylinder body are polished. Low temperature steel may also be referred to as cryogenic or ultra-low temperature steel, meaning an alloy steel suitable for use below 0 ℃ and capable of being used at-196 ℃. Optionally, the material of the cylinder is 18-8 type chrome-nickel stainless acid-resistant steel.
In the actual test process, the cylinder body contains low-temperature liquid such as liquid nitrogen, and when the low-temperature liquid in the cylinder body is the liquid nitrogen, the internal working environment temperature is-196 ℃. The clamping arms and the mechanical supports of the mechanical testing machines with different sizes and types can move up and down in the cylinder, a sample needs to be submerged in liquid nitrogen before testing and is cooled to the temperature of the liquid nitrogen (or corresponding refrigerating fluid is adopted according to the required temperature to obtain the required low-temperature environment), when the sample reaches the preset temperature and is stable, the universal material testing machine is started to perform mechanical test, and loads such as stretching, compression, shearing, bending, fatigue and the like are applied to the sample under the condition of soaking and cooling of the liquid nitrogen. When the liquid nitrogen in the cylinder body is insufficient, the liquid nitrogen can be conveniently added through the opening above the cylinder body. The liquid nitrogen is colorless transparent liquid, and light rays enter from an opening above the barrel body, so that visual observation is conveniently realized. The camera or the CCD high-speed camera is arranged on the outer side of the observation window assembly, and the behaviors of deformation, delamination, damage and the like generated when the material is stressed in a low-temperature environment can be observed, photographed, shot and recorded through the observation window of the observation window assembly.
In an embodiment of the present invention, optionally, the observation window assembly includes a first observation window assembly and a second observation window assembly, the first observation window assembly is installed on the inner wall of the cylinder, the second observation window assembly is coaxially disposed with the first observation window assembly and installed on the outer wall of the cylinder, and the process of testing the cryomechanical properties of the sample inside the cylinder can be observed through the second observation window assembly and the first observation window assembly.
Further, the observation window assembly comprises a cylinder flange and quartz glass. Optionally, the quartz glass is installed at one end of the cylinder flange, the other ends of the two cylinder flanges are respectively installed on the inner wall and the outer wall of the cylinder, and the two cylinder flanges are coaxially arranged so as to observe the process of testing the low-temperature mechanical property of the sample in the cylinder.
Further, in an embodiment of the utility model, optionally, the barrel flange adopts argon arc welding sealing connection with the barrel.
It can be understood that: the embodiment of the utility model provides an auxiliary device for material low temperature mechanical properties test can set up sealed lid or set up the thermal insulation layer in the barrel at the barrel top, realizes the visual observation, the shoot, make a video recording and the record of the material low temperature mechanical properties test process of different low temperature district.
The embodiment of the utility model provides an auxiliary device for mechanical properties test of material low temperature through setting up the observation window subassembly, has realized the visual of material low temperature mechanical properties test process; simultaneously the embodiment of the utility model provides an auxiliary device accessible for material low temperature mechanical properties tests uses different low temperature working mediums, realizes the visualization of the material low temperature mechanical properties test process of different low temperature districts, provides technical support for the evaluation of material mechanical properties, the research of material damage process and the optimal control of material technology under the low temperature environment.
As shown in fig. 1, in an embodiment of the present invention, the barrel includes: an inner cylinder 10, an outer cylinder 11 and a sealing flange 12. The inner cylinder 10 is filled with a low temperature liquid, and the material testing machine and the sample are arranged in the inner cylinder 10 so that the sample is in a low temperature environment. The outer cylinder 11 is sleeved outside the inner cylinder 10, and a gap is formed between the outer cylinder 11 and the inner cylinder 10. A sealing flange 12 is disposed on top of the inner and outer cylinders 10 and 11 to form a closed space with a gap between the inner and outer cylinders 10 and 11. Further, a through hole is formed at the center of the sealing flange 12, and the size of the through hole matches with the size of the inner cylinder 10, so that the inner cylinder 10 forms an opening, and when the low-temperature liquid in the inner cylinder 10 is insufficient, the low-temperature liquid can be conveniently added through the opening above the inner cylinder 10. Meanwhile, light enters from an opening above the inner barrel 10, and visual observation is conveniently achieved.
Further, in an embodiment of the present invention, the sidewall of the inner tube 10 is a thin-walled structure, so that heat leakage generated by heat conduction can be reduced. Optionally, in an embodiment of the invention, the wall thickness is 1.2 mm.
The embodiment of the utility model provides an auxiliary device for material low temperature mechanical properties tests, through with the uncovered design in inner tube top, the inner tube inner space is great, can set up the various anchor clamps of different mechanical testing machines, during the uncovered low temperature liquid that shines of light accessible, the problem of polishing when having solved visual window observation, simultaneously, when the material carries out low temperature mechanical properties test, when discovering that low temperature liquid is not enough, when the low temperature ambient temperature in the inner tube is higher than the settlement temperature, be convenient for supply low temperature liquid.
Further, in an embodiment of the present invention, the auxiliary device for testing the mechanical properties of the material at low temperature further includes a vacuum sealing evacuation port 13 disposed on the outer wall of the outer cylinder 11, so as to evacuate the enclosed space between the inner cylinder 10 and the outer cylinder 11.
Specifically, before the low-temperature mechanical property test of a sample, the vacuum sealing pumping port 13 is connected with the molecular pump unit, the molecular pump unit is started, and when the vacuum degree in the closed space between the inner cylinder 10 and the outer cylinder 11 reaches high vacuum, namely the vacuum degree is less than 10-3After Pa, the vacuum sealing pumping port 13 is closed, so that a sealed vacuum interlayer is formed in a closed space between the inner cylinder 10 and the outer cylinder 11, heat leakage caused by air convection can be effectively reduced, evaporation of low-temperature liquid in the inner cylinder 10 is reduced, and a low-temperature environment is provided for a material low-temperature mechanical property test.
Further, in an embodiment of the present invention, optionally, activated carbon with adsorption characteristics can be placed in the vacuum interlayer to adsorb residual gas, so as to maintain the vacuum degree of the vacuum interlayer for a longer time and reduce the heat convection of air.
Optionally, the outer surface of the sidewall and bottom of the inner cylinder 10 may be coated with a high vacuum multi-layer insulation material for a cryogenic container to further reduce radiant heat leakage and reduce evaporation of cryogenic liquid in the inner cylinder 10. In particular, in the high-vacuum interlayer space of the cryogenic container, a heat insulation mode is formed by alternately combining a spacing material and a reflecting screen. The spacer material includes: glass fiber paper, glass fiber cloth, chemical fiber paper and synthetic fiber screen. The reflecting screen includes: aluminum foil and aluminum-plated polyester film. In one embodiment of the present invention, the high vacuum multi-layer insulation material for the cryogenic vessel may be any combination of the above spacer material and the reflective screen. Optionally, in an embodiment of the present invention, the number of layers of the high vacuum multilayer insulation material for the cryogenic vessel is greater than 30 layers.
The embodiment of the utility model provides an auxiliary device for testing mechanical properties of materials at low temperature, through setting the lateral wall of the inner tube to be the thin-walled structure, can reduce heat conduction; the active carbon is arranged in the vacuum interlayer, so that the convection heat exchange of air can be reduced; the inner surface and the outer surface of the inner cylinder and the outer cylinder are polished, and the outer surface of the inner cylinder is coated with the high-vacuum multilayer heat-insulating material, so that the heat radiation can be reduced, the heat leakage between the auxiliary device and the outside is reduced, the evaporation of low-temperature liquid is reduced, and the sample can be kept in a low-temperature environment for a long time.
As shown in fig. 1 and 2, in one embodiment of the present invention, the observation window assembly includes: a first viewing window assembly and a second viewing window assembly. The first observation window component is arranged on the outer wall of the inner barrel 10, and the second observation window component is arranged on the outer wall of the outer barrel 11 and is coaxial with the first observation window component.
Specifically, the first observation window assembly includes: a first cylinder 20 and a first quartz glass 21. The first cylinder 20 is installed on the outer wall of the inner cylinder 10, and the first quartz glass 21 is hermetically installed inside the first cylinder 20.
Specifically, since the first observation window assembly directly contacts with the cryogenic liquid, in this embodiment, the first observation window assembly directly contacts with the liquid nitrogen at a temperature of-196 ℃, and since the expansion coefficient of the quartz glass at low temperature is much smaller than that of the stainless steel material, when testing, if the first cylinder 20 is made of the cryogenic stainless steel, the first cylinder shrinks more when cooled, and the quartz glass is easily crushed. Further, in an embodiment of the present invention, in order to prevent the first cylinder 20 from damaging the first quartz glass 21 when it is cold-shrunk, the material of the first cylinder 20 can be kovar alloy, i.e. 4J29 alloy, whose thermal expansion coefficient is close to that of the first quartz glass, and has excellent welding performance, and has good low-temperature structural stability, the oxide film of the alloy is compact, and can be well infiltrated by the first quartz glass 21, and the sealing performance is excellent, and can be hermetically connected with the first quartz glass 21 to prevent the leakage of liquid nitrogen.
Optionally, in order to prevent the first quartz glass 21 from being damaged when the first cylinder 20 contracts when cooled, a kovar alloy layer 22 may be disposed between the first cylinder 20 and the first quartz glass 21 for transition welding connection, so as to reduce the influence on the first quartz glass 21 when the first cylinder 20 contracts when cooled. Further, in the present embodiment, the material of the first cylinder 20 may be low temperature stainless steel.
Optionally, the second viewing window assembly comprises: a second cylinder and a second quartz glass. The second cylinder is installed on the outer wall of the outer cylinder 11 and is coaxially arranged with the first cylinder 20, and the second quartz glass is hermetically installed in the second cylinder. Specifically, the second cylinder and the second quartz glass can be sealed through matching; the second cylinder and the second quartz glass can also be connected together by means of pressure sealing, i.e. the second cylinder and the second quartz glass are connected by means of kovar alloy transition welding.
Optionally, the second viewing window assembly comprises: a third cylinder 30, a free flange 31 and a third quartz glass 32. Specifically, the first end of the third cylinder 30 is mounted on the outer wall of the outer cylinder 11 and is coaxially disposed with the first cylinder 20, the second end of the third cylinder 30 is formed with a flange, the outer surface of the flange is threaded, the inner surface of the first end of the free flange 31 is also threaded, and the flange of the third cylinder 30 is threaded with the first end of the free flange 31. A third quartz glass 32 is arranged at the second end of the free flange 31 in order to observe the test progress of the sample in the inner cylinder 10 through the third quartz glass 32 and the first quartz glass 21.
Further, in an embodiment of the present invention, the flange of the third cylinder 30 and the free flange 31 may also be connected by a bolt connection.
Further, in an embodiment of the present invention, optionally, the first cylinder 20 and the inner cylinder 10 may be mounted in an argon arc welding manner; the second or third cylinder 30 and the outer cylinder 11 may be mounted by argon arc welding.
Further, in an embodiment of the present invention, the auxiliary device for testing low-temperature mechanical properties of materials further includes a plurality of sealing rings 33, a first sealing groove is formed on a side of the third cylinder 30 contacting the third quartz glass 32, a second sealing groove is formed on a side of the free flange 31 contacting the third quartz glass 32, the plurality of sealing rings 33 are respectively disposed in the first sealing groove and the second sealing groove, and contact with two sides of the third quartz glass 32 to protect the third quartz glass 32, so as to prevent the free flange 31 from damaging the third quartz glass 32 when being assembled with the flange of the third cylinder 30. At the same time, air is prevented from entering the vacuum interlayer from the second viewing window assembly.
Specifically, in the actual installation process, the sealing ring 33 can be placed in the first sealing groove, then the third quartz glass 32 can be pressed on the sealing ring 33, and then the free flange 31 can be fastened with the flange of the third cylinder 30, and it can be understood that: before fastening, the seal ring 33 is placed in the second seal groove of the free flange 31, and then the free flange 31 and the flange of the third cylinder 30 are fastened.
Further, in an embodiment of the present invention, the sealing ring 33 may be a teflon annular gasket or a rubber O-ring.
As shown in fig. 1, in an embodiment of the present invention, the auxiliary device for testing low-temperature mechanical properties of a material further includes: a recovery channel 14 and a cryogenic valve 15. Specifically, a first end of the recovery channel 14 is connected to the inner cylinder 10, a second end of the recovery channel extends to the outside of the outer cylinder 11, and a low-temperature valve 15 is disposed at the second end of the recovery channel 14 for recovering and reusing the low-temperature liquid in the inner cylinder 10.
As shown in fig. 1, in an embodiment of the present invention, the auxiliary device for testing low-temperature mechanical properties of a material further includes a handle 16, and the handle 16 is installed on the outer wall of the outer barrel 11, so as to transfer the auxiliary device to different kinds of mechanical testing machines to provide a low-temperature environment for testing low-temperature mechanical properties of the material.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. An auxiliary device for testing the low-temperature mechanical property of a material is characterized by comprising:
the device comprises a cylinder body, a vacuum interlayer is formed between the inner wall and the outer wall of the cylinder body, low-temperature liquid is filled in the cylinder body, and a clamping arm of a material testing machine, a mechanical support of the material testing machine and a sample are arranged in the cylinder body;
and the observation window assembly is arranged in the cylinder body so as to observe the low-temperature mechanical property test process of the sample in the cylinder body.
2. The auxiliary device for the material cryomechanical property test of claim 1, wherein the cylinder comprises:
an inner cylinder filled with the cryogenic liquid;
the outer cylinder is sleeved outside the inner cylinder;
the sealing flange is covered at the tops of the inner cylinder and the outer cylinder so as to form a closed space in the space between the inner cylinder and the outer cylinder;
the sealing flange is characterized in that a through hole is formed in the center of the sealing flange, and the size of the through hole is matched with that of the inner cylinder, so that the inner cylinder is opened.
3. The aid for cryogenic mechanical property testing of materials according to claim 2, wherein the observation window assembly comprises:
the first observation window assembly is arranged on the outer wall of the inner barrel;
and the second observation window component is arranged on the outer wall of the outer barrel and is coaxially arranged with the first observation window component.
4. The aid for cryogenic mechanical property testing of materials according to claim 3, wherein the first sight glass assembly comprises:
the first cylinder is arranged on the outer wall of the inner cylinder;
the first quartz glass is hermetically arranged in the first cylinder;
the first cylinder is made of kovar alloy, or the first cylinder and the first quartz glass are connected in a sealing mode through a kovar alloy layer.
5. The aid for cryogenic mechanical property testing of materials according to claim 4, wherein the second sight glass assembly comprises:
the second cylinder is arranged on the outer wall of the outer cylinder and is coaxial with the first cylinder;
and the second quartz glass is hermetically arranged in the second cylinder.
6. The aid for cryogenic mechanical property testing of materials according to claim 4, wherein the second sight glass assembly comprises:
the third cylinder is arranged on the outer wall of the outer cylinder and is coaxial with the first cylinder;
the free flange is connected with the third cylinder;
and the third quartz glass is arranged in the free flange.
7. The auxiliary device for testing the cryogenic mechanical properties of the material according to claim 6, further comprising a plurality of sealing rings,
the lateral wall of third barrel is formed with first seal groove, the lateral wall of free flange is formed with the second seal groove, and is a plurality of the sealing washer sets up respectively in first seal groove with in the second seal groove, and respectively with two sides of third quartz glass contact.
8. The auxiliary device for testing the cryogenic mechanical properties of the material as claimed in claim 2, further comprising a vacuum sealing exhaust port arranged on the outer wall of the outer barrel.
9. The auxiliary device for testing the cryogenic mechanical properties of the material according to claim 2, further comprising:
a recovery channel, a first end of which is connected with the inner cylinder and a second end of which extends to the outside of the outer cylinder;
and the low-temperature valve is arranged at the second end of the recovery channel.
10. The auxiliary device for the material low-temperature mechanical property test is characterized by further comprising a high-vacuum multilayer heat-insulating material for the cryogenic container, wherein the outer wall and the bottom surface of the inner barrel are coated with the high-vacuum multilayer heat-insulating material for the cryogenic container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120058986.3U CN214538921U (en) | 2021-01-11 | 2021-01-11 | Auxiliary device for testing low-temperature mechanical properties of material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120058986.3U CN214538921U (en) | 2021-01-11 | 2021-01-11 | Auxiliary device for testing low-temperature mechanical properties of material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214538921U true CN214538921U (en) | 2021-10-29 |
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| CN202120058986.3U Active CN214538921U (en) | 2021-01-11 | 2021-01-11 | Auxiliary device for testing low-temperature mechanical properties of material |
Country Status (1)
| Country | Link |
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| CN (1) | CN214538921U (en) |
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2021
- 2021-01-11 CN CN202120058986.3U patent/CN214538921U/en active Active
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