CN215115496U - Experimental device for mechanical properties of liquid hydrogen material - Google Patents
Experimental device for mechanical properties of liquid hydrogen material Download PDFInfo
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- CN215115496U CN215115496U CN202120121393.7U CN202120121393U CN215115496U CN 215115496 U CN215115496 U CN 215115496U CN 202120121393 U CN202120121393 U CN 202120121393U CN 215115496 U CN215115496 U CN 215115496U
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- liquid hydrogen
- sample
- test chamber
- testing machine
- testing
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 83
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 83
- 239000007788 liquid Substances 0.000 title claims abstract description 81
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000012360 testing method Methods 0.000 claims abstract description 114
- 238000002791 soaking Methods 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 37
- 239000011261 inert gas Substances 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 5
- 238000009864 tensile test Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 3
- 230000003028 elevating effect Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000012669 compression test Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
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Abstract
The utility model discloses a face liquid hydrogen material mechanical properties experimental apparatus, including test chamber, testing machine, liquid hydrogen container, send model machine and refrigerator, the testing machine sets up in the test chamber, and liquid hydrogen container is used for soaking the sample, send the model machine to be arranged in shifting the sample of liquid hydrogen container to the testing machine, and the testing machine is used for the mechanical properties of test sample, and refrigerator intercommunication test chamber, refrigerator are used for reducing the indoor temperature of test chamber. Soaking the sample in a liquid hydrogen environment, enabling the sample to change correspondingly in the liquid hydrogen, reducing the temperature of the test chamber by using a refrigerator, simulating the low temperature of the liquid hydrogen in a low-temperature environment, reacting the sample subjected to liquid hydrogen treatment in the low-temperature environment with the mechanical property of a liquid hydrogen material, and detecting the property in the low-temperature environment through a testing machine; simulate the condition that the in-service use material received hydrogen and low temperature combined action during the test, the utility model provides a face liquid hydrogen material mechanical properties's test to liquid hydrogen's leakage has been avoided.
Description
Technical Field
The utility model relates to a mechanical properties experiment of material, in particular to face liquid hydrogen material mechanical properties experimental apparatus.
Background
The mechanical performance test of the material in the environment of liquid hydrogen reflects the performance state of the material in actual use when the material is in the liquid hydrogen state.
In the existing testing mode, a sample is soaked in a liquid hydrogen container, a mechanical performance testing machine penetrates through the liquid hydrogen container through a movable device, the sealing problem which is difficult to solve exists at the joint between the movable device and the liquid hydrogen container, and potential safety hazards can be brought once liquid hydrogen leaks; in another type of test mode, a low-temperature test environment is provided only by low-temperature helium gas, but the effect of hydrogen on the material is not involved, and the mode cannot truly reflect the material performance of the liquid hydrogen environment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an face liquid hydrogen material mechanical properties experimental apparatus, the material face liquid hydrogen mechanical properties and obtain detecting.
According to the utility model discloses a face liquid hydrogen material mechanical properties experimental apparatus of first aspect embodiment, including test chamber, testing machine, liquid hydrogen container, send model machine and refrigerator, the testing machine sets up in the test chamber, the liquid hydrogen container is used for soaking the sample, send the model machine be used for with in the liquid hydrogen container the sample shifts to the testing machine, the testing machine is used for the test the mechanical properties of sample, the refrigerator intercommunication the test chamber, the refrigerator is used for reducing the room temperature of test chamber.
According to the utility model discloses face liquid hydrogen material mechanical properties experimental apparatus has following beneficial effect at least: soaking a sample in a liquid hydrogen container, conveying the sample to a testing machine in a test chamber through a sample conveying machine, cooling the temperature of the test chamber by a refrigerating machine to enable the temperature in the test chamber to reach a preset experimental value, and starting the testing machine to detect the mechanical property of the sample; soaking the sample in a liquid hydrogen environment, enabling the sample to change correspondingly in the liquid hydrogen, reducing the temperature of the test chamber by using a refrigerator, simulating the low temperature of the liquid hydrogen in a low-temperature environment, reacting the sample subjected to liquid hydrogen treatment in the low-temperature environment with the mechanical property of a liquid hydrogen material, and detecting the property in the low-temperature environment through a testing machine; after the sample is higher than the liquid level of the liquid hydrogen, the liquid hydrogen is separated from the sample and flows back to the liquid hydrogen container in a parallel flow mode, no moving equipment penetrates through the liquid hydrogen container, and leakage of the liquid hydrogen is avoided; simulate the condition that the in-service use material received hydrogen and low temperature combined action during the test, the utility model provides a face liquid hydrogen material mechanical properties's test to liquid hydrogen's leakage has been avoided.
According to some embodiments of the invention, the refrigerator prepares the cryogenic inert gas, the output of the refrigerator the port of the cryogenic inert gas communicates with the test chamber.
According to some embodiments of the invention, the testing machine is a universal testing machine.
According to some embodiments of the utility model, the testing machine includes one or more in tensile test mechanism, compression test mechanism, bending test mechanism, shear test mechanism and the moment of torsion test mechanism.
According to some embodiments of the utility model, the sample feeder includes moving mechanism, connects the first elevating system on moving mechanism and connects the clamping device on first elevating system.
According to some embodiments of the utility model, be provided with second elevating system in the liquid hydrogen container, second elevating system is provided with puts the thing platform, second elevating system is used for driving it goes up and down to put the thing platform, send the model machine to be the arm.
According to some embodiments of the invention, the test chamber further comprises a temperature sensor, the sensing end of the temperature sensor being in the test chamber.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is the structural schematic diagram of the mechanical property experimental device for the liquid hydrogen material of the embodiment of the utility model.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, according to the utility model discloses a face liquid hydrogen material mechanical properties experimental apparatus of first aspect embodiment, including test chamber 100, testing machine 200, liquid hydrogen container 300, send a kind machine 400 and refrigerator 500, testing machine 200 sets up in test chamber 100, and liquid hydrogen container 300 is used for soaking the sample, send a kind machine 400 to be used for shifting the sample in liquid hydrogen container 300 to testing machine 200, and testing machine 200 is used for testing the mechanical properties of sample, and refrigerator 500 intercommunication test chamber 100, refrigerator 500 is used for reducing the indoor temperature of test chamber 100.
The sample is soaked in the liquid hydrogen container 300, the sample is sent to the testing machine 200 in the test chamber by the sample sending machine 400, the temperature of the test chamber 100 is cooled by the refrigerating machine 500, the temperature in the test chamber 100 reaches a preset test value, and the testing machine 200 is started to detect the mechanical property of the sample. The sample which is subjected to liquid hydrogen treatment in the low-temperature environment reflects the mechanical properties of the liquid hydrogen-adjacent material, namely: the sample reacts the material state of the liquid hydrogen in actual use under the action of hydrogen and low temperature.
The device for testing the mechanical properties of the liquid hydrogen material further comprises a control system, such as a PLC control system, a single chip microcomputer control system, a DSP control system, a computer and the like. And the testing machine 200, the sample feeder 400, the refrigerating machine 500 and the like are electrically connected with a control system.
According to the utility model discloses face liquid hydrogen material mechanical properties experimental apparatus has following beneficial effect at least: soaking the sample in a liquid hydrogen environment, enabling the sample to change correspondingly in the liquid hydrogen, reducing the temperature of the test chamber 100 by using the refrigerator 500, simulating the low temperature of the liquid hydrogen in a low-temperature environment, reacting the sample subjected to liquid hydrogen treatment in the low-temperature environment to the mechanical property of the liquid hydrogen-adjacent material, and detecting the property in the low-temperature environment through the tester 200; after the sample is higher than the liquid level of the liquid hydrogen, the liquid hydrogen is separated from the sample and flows back to the liquid hydrogen container 300, no moving equipment penetrates through the liquid hydrogen container 300, and the leakage of the liquid hydrogen is avoided.
The test chamber is provided with a door, the sample sending machine transfers the samples through the door, and the door is connected with a door plate used for closing the door.
And starting a mechanical property test after the temperature of the sample in the test chamber uniformly reaches the test temperature. In some embodiments of the utility model, when the testing machine detected the sample performance for the temperature is not higher than the temperature of liquid hydrogen 20K in the test cabin.
In some embodiments of the present invention, the refrigerator 500 prepares the low temperature inert gas, and the port of the refrigerator 500 outputting the low temperature inert gas communicates with the test chamber 100. The inert gas is used for replacing liquid hydrogen to provide a low-temperature test environment, so that the test is safer; even if leakage occurs, the inert gas does not cause a safety problem. The sample which is processed by the liquid hydrogen can reflect the material state of the liquid hydrogen in practical use more truly under the surrounding of the low-temperature inert gas. Preferably, the inert gas is helium.
In some embodiments of the present invention, the refrigerator includes a compressor, a cryogenic storage tank, and an on-off valve, the compressor, the cryogenic storage tank, the on-off valve, and the test chamber being connected in series end-to-end to form a loop; and opening the on-off valve, enabling the gas in the low-temperature storage tank to flow to the test chamber, and enabling the compressor to suck the gas in the test chamber and compress the gas to reduce the temperature of the gas. In order to better drive the gas to circularly flow, a fan is arranged on the loop.
The utility model discloses an in some embodiments, the refrigerator includes compressor, heat exchanger, low temperature storage tank and on-off valve, and heat exchanger main group links into the primary circuit with the compressor, and primary circuit circulation refrigerant, heat exchanger vice group, low temperature storage tank, on-off valve and experimental cabin end to end establish ties to form the secondary circuit. The compressor reduces the temperature of the refrigerant, which reduces the temperature of the gas in the secondary group in the heat exchanger. Therefore, the electrical energy dissipated by the compressor operation is ultimately used to lower the temperature of the test chamber.
In some embodiments of the present invention, the testing machine 200 is a universal testing machine. The universal testing machine is a prior art in the field of machinery, and is also commonly used in laboratories for professional learning of machinery. The universal testing machine 200 is also called a universal material testing machine 200, integrates the testing functions of stretching, bending, compressing, shearing, ring stiffness and the like, is mainly used for mechanical property tests of metal and nonmetal materials, and is ideal detection equipment for departments such as industrial and mining enterprises, scientific research units, universities and colleges, engineering quality supervision stations and the like. The universal testing machine is a mechanical testing machine 200 capable of performing various tests such as stretching, compression, bending, torsion and the like; the most common are a lever pendulum type and an oil pressure pendulum type. The universal tester mainly comprises a clamping part, a sensor, a driving system and the like. Taking a tensile test mechanism as an example, the clamping part comprises two clamping jaws, the two clamping jaws are distributed at two ends of a clamped sample, at least one clamping jaw is connected with a driving system through a dynamometer, the dynamometer is electrically connected with a control system, the driving system is started, the two clamping jaws are far away from each other, the sample is stretched, the dynamometer constantly reacts a tensile force, and when the sample is disconnected and the dynamometer is subjected to a tensile force which is almost zero, the test is finished, and the driving system is stopped; in part of the arrangement, the at least one clamping jaw is directly connected with the driving system, the surface of the sample is pasted with the strain gauge, and the strain gauge is electrically connected with the computer.
In some embodiments of the present invention, the testing machine 200 includes one or more of a tensile testing mechanism, a compression testing mechanism, a bending testing mechanism, a shear testing mechanism, and a torque testing mechanism.
In some embodiments of the present disclosure, the sample feeder 400 includes a moving mechanism, a first lifting mechanism connected to the moving mechanism, and a clamping device connected to the first lifting mechanism. The moving mechanism can be a combination of a belt pulley and a belt, two ends of the belt are wound on the corresponding belt pulleys, the motor drives the belt pulleys to rotate in a reciprocating mode, the belt wound on the belt pulleys rotates in a reciprocating mode, and the first lifting mechanism is connected to the belt, so that the first lifting mechanism slides in a reciprocating mode; the moving mechanism can also be a screw-nut pair and a motor structure, the motor drives the screw to rotate in a reciprocating manner, and the nut pair slides in a reciprocating manner; the moving mechanism may have other mechanical structures. The first lifting mechanism can be simply an air cylinder or an electric cylinder. The clamping device can be simply two clamping pieces which are hinged with each other, a cylinder body is connected between the two clamping pieces, and the cylinder body drives the two clamping pieces to be occluded or opened; the clamping device can also be simply a fixed plate and a movable plate, a cylinder body is connected between the two plates, and the cylinder body drives the movable plate to be far away from or close to the fixed plate.
The utility model discloses an in some embodiments, be provided with second elevating system in the liquid hydrogen container 300, second elevating system is provided with puts the thing platform, and second elevating system is used for driving and puts the thing platform and go up and down, send appearance machine 400 to be the arm. The object placing tray, the object placing box and the like are equivalent replacements of the object placing table and are used for placing samples. The second lifting mechanism can be simply a winding roller and a sling, one end of the sling is wound on the winding roller, and the other end of the sling is connected with the object placing table. The second lifting mechanism can also be simply a swing arm, one end of the swing arm is hinged with the liquid hydrogen container, the other end of the swing arm is connected with the object placing table, the swing arm rotates, and the swing arm drives the object placing table to be placed in the liquid hydrogen.
In some embodiments of the present invention, the test chamber further comprises a temperature sensor, and the sensing end of the temperature sensor is in the test chamber. The temperature sensor may be entirely in the test chamber, or only the sensing end may be in the test chamber; the temperature sensor is electrically connected with the control system.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a face liquid hydrogen material mechanical properties experimental apparatus which characterized in that includes:
a test chamber (100);
a testing machine (200) disposed in the test chamber (100);
a liquid hydrogen container (300) for soaking the sample;
a sample feeder (400) for transferring the sample in the liquid hydrogen container (300) to the testing machine (200), the testing machine (200) for testing the mechanical properties of the sample;
the refrigerator (500) is communicated with the test chamber (100), and the refrigerator (500) is used for reducing the indoor temperature of the test chamber (100).
2. The mechanical property experiment device of the liquid hydrogen material according to claim 1, wherein the refrigerator (500) is used for preparing low-temperature inert gas, and a port of the refrigerator (500) for outputting the low-temperature inert gas is communicated with the test chamber (100).
3. The mechanical property experimental device of the liquid-adjacent hydrogen material as claimed in claim 1, wherein the testing machine (200) is a universal testing machine.
4. The liquid hydrogen material mechanical property testing device according to any one of claims 1 to 3, wherein the testing machine (200) comprises one or more of a tensile testing mechanism, a compression testing mechanism, a bending testing mechanism, a shear testing mechanism and a torque testing mechanism.
5. The clinical hydrogen material mechanical property experimental facility as claimed in any one of claims 1 to 3, wherein the sample feeder (400) comprises a moving mechanism, a first lifting mechanism connected to the moving mechanism, and a clamping device connected to the first lifting mechanism.
6. The liquid hydrogen material mechanical property experimental device according to any one of claims 1 to 3, wherein a second lifting mechanism is arranged in the liquid hydrogen container (300), the second lifting mechanism is provided with a material placing table, the second lifting mechanism is used for driving the material placing table to lift, and the sample conveying machine (400) is a mechanical arm.
7. The liquid hydrogen material mechanical property experimental device according to any one of claims 1 to 3, further comprising a temperature sensor, wherein the sensing end of the temperature sensor is arranged in the test chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120121393.7U CN215115496U (en) | 2021-01-15 | 2021-01-15 | Experimental device for mechanical properties of liquid hydrogen material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120121393.7U CN215115496U (en) | 2021-01-15 | 2021-01-15 | Experimental device for mechanical properties of liquid hydrogen material |
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| CN215115496U true CN215115496U (en) | 2021-12-10 |
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| CN202120121393.7U Expired - Fee Related CN215115496U (en) | 2021-01-15 | 2021-01-15 | Experimental device for mechanical properties of liquid hydrogen material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185939A1 (en) * | 2022-04-02 | 2023-10-05 | 华东理工大学 | Low-temperature liquid hydrogen environment material fatigue performance test system |
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2021
- 2021-01-15 CN CN202120121393.7U patent/CN215115496U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185939A1 (en) * | 2022-04-02 | 2023-10-05 | 华东理工大学 | Low-temperature liquid hydrogen environment material fatigue performance test system |
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Granted publication date: 20211210 |