CN216978580U - Ultra-low temperature atmosphere loading box - Google Patents
Ultra-low temperature atmosphere loading box Download PDFInfo
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- CN216978580U CN216978580U CN202122644400.4U CN202122644400U CN216978580U CN 216978580 U CN216978580 U CN 216978580U CN 202122644400 U CN202122644400 U CN 202122644400U CN 216978580 U CN216978580 U CN 216978580U
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Abstract
The utility model discloses an ultra-low temperature atmosphere loading box, which comprises: the box body is provided with a box door, a hollow cavity is arranged inside the box body, and a sample is arranged in the hollow cavity; the loading units are arranged on the upper side and the lower side of the box body and can apply load to the sample in the box body; the ultralow temperature atmosphere unit is used for injecting liquid helium into the box body to form a low-temperature environment; the heating unit is arranged inside the hollow cavity and can heat the liquid helium to a set temperature; and a pull-out type deformation detection unit for detecting the deformation amount of the sample. The utility model has the advantages of compact structure, high precision, convenient operation, controllable production and acquisition cost and the like.
Description
Technical Field
The utility model relates to the technical field of testing devices in an ultralow-temperature atmosphere environment, in particular to an ultralow-temperature atmosphere loading box.
Background
With the rapid development of high and new technologies in China, the rapid advance of national economic benefits and national defense construction, the continuous change of market demands, the formulation, the promotion and the execution of new test standards, the research and the development and the production of novel materials, and the development of samples in an ultralow-temperature atmosphere environment, the corresponding test equipment of mechanical and physical performance parameter data is an urgent matter to be solved.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an ultra-low temperature atmosphere loading box with compact structure, high precision, convenient operation and controllable production and acquisition costs for solving the above technical problems.
An ultra-low temperature atmosphere loading chamber comprising:
the box body is provided with a box door, a hollow cavity is arranged inside the box body, and a sample is arranged in the hollow cavity;
the loading units are arranged on the upper side and the lower side of the box body and can apply load to the sample in the box body;
the ultralow temperature atmosphere unit is used for injecting liquid helium into the box body to form a low-temperature environment;
the heating unit is arranged inside the hollow cavity and can heat the liquid helium to a set temperature;
and the extraction type deformation detection unit is used for extracting the deformation amount of the sample to the outside of the box body for detection.
In one embodiment, the loading unit includes:
the upper pull rod vertically penetrates through the top of the box body, and the lower end of the upper pull rod extends into the box body and is connected with one end of the sample;
the first vacuum corrugated pipe is sleeved on the upper pull rod in a sealing manner, and two ends of the first vacuum corrugated pipe are respectively fixedly connected with the top of the box body and the upper pull rod;
the lower pull rod vertically penetrates through the bottom of the box body, and the upper end of the lower pull rod extends into the box body and is connected with the other end of the sample;
the second vacuum corrugated pipe is hermetically sleeved on the lower pull rod, and two ends of the second vacuum corrugated pipe are respectively and fixedly connected with the bottom of the box body and the lower pull rod;
the upper pull rod and the lower pull rod are coaxial with each other, and the upper pull rod and the lower pull rod are respectively connected with an external force application source.
In one embodiment, the test specimen is connected to the upper pull rod and the lower pull rod through pins.
In one embodiment, the ultra-low temperature atmosphere unit includes:
the exhaust pipe is arranged on the box body, is communicated with the hollow cavity and is provided with a first flow regulating electromagnetic valve;
and the air inlet pipe is arranged on the box body, communicated with the hollow cavity and connected with the self-pressurization liquid helium tank through a second flow regulating electromagnetic valve.
In one embodiment, the pull-out type deformation detection unit includes:
the first threaded seat is arranged at the lower part of the upper pull rod;
one end of the first lead-out rod is connected with the first threaded seat, the other end of the first lead-out rod penetrates out of the box body through a U-shaped groove, and the U-shaped groove is formed in the back side of the box body;
the second threaded seat is arranged at the upper part of the lower pull rod;
one end of the second leading-out rod is connected with the second threaded seat, and the other end of the second leading-out rod penetrates out of the box body through the U-shaped groove;
the first clamping seat is arranged at one end, positioned outside the box body, of the first leading-out rod;
the second clamping seat is installed at one end, located outside the box body, of the second leading-out rod, a deformation sensor is installed on the second clamping seat, and the position of the deformation sensor corresponds to that of the first clamping seat.
In one embodiment, the heating unit includes:
the nickel-cadmium gold-iron alloy thermocouple is arranged at the center of the back of the hollow cavity;
and the heating elements are arranged at the four corners of the hollow cavity.
In one embodiment, a circular ultrathin light-transmitting membrane and a rectangular ultrathin light-transmitting membrane are respectively arranged on the side walls of the opposite sides of the box body.
According to the ultra-low temperature atmosphere loading box, the loading unit is connected to an external force application source, the extraction type deformation detection unit measures the mechanical property of the deformation of the sample in the stretching and compressing states of the sample in the ultra-low temperature atmosphere environment, the specific detector detects the microcosmic physical property of the sample at a certain position in the stretching and compressing states through the ultra-thin light-transmitting diaphragm, and accordingly relevant test data and experience can be accumulated in the ultra-low temperature mode test, so that the ultra-low temperature atmosphere loading box has the advantages of compact structure, high precision, convenience in operation, controllable production and acquisition cost and the like.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of an ultra-low temperature atmosphere loading chamber of the present invention;
FIG. 2 is a schematic view of the internal structure of the ultra-low temperature atmosphere loading chamber of the present invention;
FIG. 3 is a cross-sectional view of the ultra-low temperature atmosphere loading chamber of the present invention;
FIG. 4 is a right side view of the ultra-low temperature atmosphere loading chamber of the present invention;
fig. 5 is a left side view of the ultra-low temperature atmosphere loading chamber of the present invention.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, an embodiment of the present invention provides an ultra-low temperature atmosphere loading chamber, including: the device comprises a box body 2, a loading unit, an ultralow temperature atmosphere unit, a heating unit and a lead-out type deformation detection unit.
The box body 2 is provided with a box door 1, a hollow cavity 25 is arranged inside the box body 2, and a sample 14 is arranged in the hollow cavity 25; the loading units are arranged at the upper side and the lower side of the box body 2 and can apply load to the sample 14 in the box body 2; the ultra-low temperature atmosphere unit is used for injecting liquid helium into the box body 2 to form a low-temperature environment; a heating unit is arranged inside the hollow cavity 25, and the heating unit can heat the liquid helium to a set temperature; the extraction type deformation detection unit is used for detecting the deformation amount of the sample 14 extracted to the outside of the box body 2 for detection.
According to the ultra-low temperature atmosphere loading box, the loading unit is connected to an external force application source, in the ultra-low temperature atmosphere environment, the extraction type deformation detection unit measures the mechanical property of the deformation of the sample 14 when the sample 14 is in a stretching state and a compressing state, the specific detector detects the microcosmic physical property of the sample 14 at a certain position in the stretching state and the compressing state through the ultra-thin light-transmitting membrane, and accordingly relevant test data and experience can be accumulated in an ultra-low temperature mode test, so that the ultra-low temperature atmosphere loading box has the advantages of compact structure, high precision, convenience in operation, controllable production and acquisition cost and the like.
In an embodiment of the present invention, the loading unit includes: an upper pull rod 4, a first vacuum bellows 3, a lower pull rod 10 and a second vacuum bellows 9.
The upper pull rod 4 vertically penetrates through the top of the box body 2, and the lower end of the upper pull rod 4 extends into the box body 2 and is connected with one end of the sample 14;
the first vacuum corrugated pipe 3 is sleeved on the upper pull rod 4 in a sealing manner, and two ends of the first vacuum corrugated pipe 3 are respectively fixedly connected with the top of the box body 2 and the upper pull rod 4;
the lower pull rod 10 vertically penetrates through the bottom of the box body 2, and the upper end of the lower pull rod 10 extends into the box body 2 and is connected with the other end of the sample 14;
a second vacuum corrugated pipe 9 is sleeved on the lower pull rod 10 in a sealing manner, and two ends of the second vacuum corrugated pipe 9 are fixedly connected with the bottom of the box body 2 and the lower pull rod 10 respectively;
the upper pull rod 4 and the lower pull rod 10 are coaxial with each other, and the upper pull rod 4 and the lower pull rod 10 are respectively connected with an external force application source. In this embodiment, the first vacuum bellows 3 and the second vacuum bellows 9 have a sealing function, so as to prevent the liquid helium from leaking. The upper pull rod 4 and the lower pull rod 10 are coaxially arranged, so that loads on the same straight line can be applied to the sample 14, the generation of shearing force can be reduced, and the influence on an experimental result is avoided.
In one embodiment of the present invention, in order to facilitate the installation and removal of the test piece 14, the test piece 14 is connected to the upper pull rod 4 and the lower pull rod 10 by the latch 15.
In an embodiment of the present invention, the ultra-low-temperature atmosphere unit includes: an exhaust pipe 16 and an intake pipe 18.
An exhaust pipe 16 is installed on the box body 2, the exhaust pipe 16 is communicated with the hollow cavity 25, and a first flow regulating electromagnetic valve 17 is arranged on the exhaust pipe 16; the first flow rate adjustment solenoid valve 17 can adjust the exhaust amount of the exhaust pipe 16.
The gas inlet pipe 18 is installed on the box body 2, the gas inlet pipe 18 is communicated with the hollow cavity 25, the gas inlet pipe 18 is connected with the self-pressurization liquid helium tank 20 through a second flow regulating electromagnetic valve 19, and the second flow regulating electromagnetic valve 19 can regulate the amount of liquid helium in the self-pressurization liquid helium tank 20 entering the gas inlet pipe 18.
In an embodiment of the present invention, the pull-out type deformation detecting unit includes: the device comprises a first threaded seat 5, a first lead-out rod 6, a second threaded seat 8, a second lead-out rod 11, a first clamping seat 7 and a second clamping seat 12.
A first thread seat 5 is arranged at the lower part of the upper pull rod 4;
one end of a first lead-out rod 6 is connected with the first threaded seat 5, the other end of the first lead-out rod 6 penetrates out of the box body 2 through a U-shaped groove 26, and the U-shaped groove 26 is formed in the back side of the box body 2;
the second thread seat 8 is arranged at the upper part of the lower pull rod 10;
one end of a second lead-out rod 11 is connected with the second threaded seat 8, and the other end of the second lead-out rod 11 penetrates out of the box body 2 through a U-shaped groove 26;
a first clamping seat 7 is arranged at one end of the first leading-out rod 6 positioned outside the box body 2;
a second clamping seat 12 is arranged at one end, positioned outside the box body 2, of the second leading-out rod 11, a deformation sensor 13 is arranged on the second clamping seat 12, and the deformation sensor 13 corresponds to the first clamping seat 7 in position.
In the present embodiment, by disposing the deformation sensor 13 outside the case 2, it is prevented from being affected by the low temperature of the liquid helium. Meanwhile, the deformation sensor 13 detects the relative position of the first clamping seat 7, so that the deformation of the sample 14 can be calculated, and the measurement is simple and convenient and has high accuracy.
In an embodiment of the present invention, the heating unit includes: a nickel-cadmium-gold-iron alloy thermocouple 23 and a heating element 24.
The nickel-cadmium-gold-iron alloy thermocouple 23 is arranged at the center of the back of the hollow cavity 25; in this way, the temperature inside the hollow cavity 25 can be detected; the heating elements 24 are disposed at the four corners of the hollow cavity 25, so that the hollow cavity 25 can be uniformly heated, and the ambient temperature of the sample 14 can reach a set range.
In an embodiment of the present invention, a circular ultrathin light-transmitting diaphragm 21 and a rectangular ultrathin light-transmitting diaphragm 22 are respectively disposed on the side walls of the opposite sides of the box body 2. In this way, the specific detector can detect the microscopic physical properties of the sample 14 at a certain position in the stretching and compressing states through the circular ultrathin light-transmitting diaphragm 21 and the rectangular ultrathin light-transmitting diaphragm 22.
The working principle of the utility model is as follows:
connecting the upper pull rod 4 and the lower pull rod 10 to an external force application source, installing a sample 14, enabling liquid helium to enter a hollow cavity 25 of the box body 2 through the second flow regulating electromagnetic valve 19 from the pressurized liquid helium tank 20, opening the first flow regulating electromagnetic valve 17, even though the exhaust pipe 16 is in contact with the atmosphere, if the temperature of the liquid helium is ultra-low and the temperature is higher than the set temperature in a short time, the heating element 24 is required to be started to heat the liquid helium, meanwhile, adjusting the helium amount entering and exhausting from the box body 2 through the second flow regulating electromagnetic valve 19 and the first flow regulating electromagnetic valve 17, detecting the temperature in the box body 2 through the nickel-cadmium-gold-iron alloy thermocouple 23, controlling the heating element 24 to heat to the set temperature target, and finally, measuring the deformation of the sample 14 by using the deformation sensor 13 in an extraction mode.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (7)
1. An ultra-low temperature atmosphere loading chamber, comprising:
the box body (2), a box door (1) is arranged on the box body (2), a hollow cavity (25) is arranged inside the box body (2), and a sample (14) is arranged in the hollow cavity (25);
the loading units are arranged on the upper side and the lower side of the box body (2) and can apply load to the sample (14) in the box body (2);
the ultralow temperature atmosphere unit is used for injecting liquid helium into the box body (2) to form a low temperature environment;
a heating unit disposed inside the hollow cavity (25), the heating unit being capable of heating the liquid helium to a set temperature;
and a pull-out type deformation detection unit for pulling out the deformation amount of the sample (14) to the outside of the box body (2) for detection.
2. The ultra-low temperature atmosphere loading chamber of claim 1, wherein the loading unit comprises:
the upper pull rod (4) vertically penetrates through the top of the box body (2), and the lower end of the upper pull rod (4) extends into the box body (2) and is connected with one end of the sample (14);
the first vacuum corrugated pipe (3) is sleeved on the upper pull rod (4) in a sealing manner, and two ends of the first vacuum corrugated pipe (3) are respectively fixedly connected with the top of the box body (2) and the upper pull rod (4);
the lower pull rod (10) vertically penetrates through the bottom of the box body (2), and the upper end of the lower pull rod (10) extends into the box body (2) and is connected with the other end of the sample (14);
the second vacuum corrugated pipe (9) is hermetically sleeved on the lower pull rod (10), and two ends of the second vacuum corrugated pipe (9) are respectively and fixedly connected with the bottom of the box body (2) and the lower pull rod (10);
the upper pull rod (4) and the lower pull rod (10) are coaxial with each other, and the upper pull rod (4) and the lower pull rod (10) are respectively connected with an external force application source.
3. An ultra-low temperature atmosphere loading box according to claim 2, characterized in that the sample (14) is connected to the upper pull rod (4) and the lower pull rod (10) by bolts (15).
4. The ultra-low temperature atmosphere loading chamber of claim 3, wherein the ultra-low temperature atmosphere unit comprises:
the exhaust pipe (16) is arranged on the box body (2), the exhaust pipe (16) is communicated with the hollow cavity (25), and a first flow regulating electromagnetic valve (17) is arranged on the exhaust pipe (16);
the gas inlet pipe (18) is installed on the box body (2), the gas inlet pipe (18) is communicated with the hollow cavity (25), and the gas inlet pipe (18) is connected with the self-pressurization liquid helium tank (20) through a second flow regulating electromagnetic valve (19).
5. The ultra-low temperature atmosphere loading chamber according to any one of claims 2 to 4, wherein the pullout type deformation detecting unit includes:
the first threaded seat (5) is arranged at the lower part of the upper pull rod (4);
one end of the first lead-out rod (6) is connected with the first threaded seat (5), the other end of the first lead-out rod (6) penetrates out of the box body (2) through a U-shaped groove (26), and the U-shaped groove (26) is formed in the back side of the box body (2);
a second screw seat (8) mounted on the upper part of the lower pull rod (10);
one end of a second lead-out rod (11) is connected with the second threaded seat (8), and the other end of the second lead-out rod (11) penetrates out of the box body (2) through a U-shaped groove (26);
the first clamping seat (7) is arranged at one end, positioned outside the box body (2), of the first leading-out rod (6);
the second clamping seat (12) is installed at one end, located outside the box body (2), of the second leading-out rod (11), a deformation sensor (13) is installed on the second clamping seat (12), and the deformation sensor (13) corresponds to the first clamping seat (7).
6. The ultra-low temperature atmosphere loading chamber of claim 1, wherein the heating unit comprises:
the nickel-cadmium-gold-iron alloy thermocouple (23) is arranged at the center of the back of the hollow cavity (25);
and the heating elements (24) are arranged at the four corners of the hollow cavity (25).
7. An ultra-low temperature atmosphere loading chamber as claimed in claim 1, wherein the side walls of the opposite sides of the chamber body (2) are respectively provided with a circular ultra-thin light-transmitting diaphragm (21) and a rectangular ultra-thin light-transmitting diaphragm (22).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122644400.4U CN216978580U (en) | 2021-11-01 | 2021-11-01 | Ultra-low temperature atmosphere loading box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122644400.4U CN216978580U (en) | 2021-11-01 | 2021-11-01 | Ultra-low temperature atmosphere loading box |
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| CN216978580U true CN216978580U (en) | 2022-07-15 |
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| CN202122644400.4U Active CN216978580U (en) | 2021-11-01 | 2021-11-01 | Ultra-low temperature atmosphere loading box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116642769A (en) * | 2023-07-27 | 2023-08-25 | 哈尔滨工业大学 | Structure sample coupling deformation measuring device and system |
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2021
- 2021-11-01 CN CN202122644400.4U patent/CN216978580U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116642769A (en) * | 2023-07-27 | 2023-08-25 | 哈尔滨工业大学 | Structure sample coupling deformation measuring device and system |
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