Rapid sample changing device for mechanical test in high-pressure and low-temperature environment

Abstract

The utility model relates to the technical field of low-temperature equipment and measurement, and provides a quick sample changing device for high-pressure and low-temperature environment mechanical test, which comprises a loading rod, a first end is used for applying loading force, and a second end of the loading rod is detachably connected with a sample; the first end of the reverser is connected with the loading rod, and the second end of the reverser is connected with the other end of the sample; the loading rod penetrates through the air cavity, and the top of the air cavity is in dynamic sealing connection with the loading rod; and the test cavity is communicated with the air cavity, and the second end of the loading rod extends into the test cavity. According to the rapid sample changing device for the mechanical test in the high-pressure and low-temperature environment, when a sample needs to be changed, the sample can be changed only by lifting the whole loading rod upwards until the reverser is higher than the air cavity, detaching and changing the sample and then putting the whole loading rod down to the top of the air cavity to be hermetically connected with the loading rod, so that the sample changing efficiency is improved, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic equipment and measurement technology, and in particular to a rapid sample changing device for mechanical testing in high-pressure cryogenic environments. Background Technology

[0002] In industry, gases are often pressurized for storage and transportation. Taking hydrogen as an example, with the continuous development of hydrogen energy technology, hydrogen, as a clean energy source, has been widely used in energy, transportation, and aerospace fields. The impact of hydrogen on the mechanical properties of materials under high pressure and low temperature environments is one of the key factors restricting the design and application of related equipment. For instance, the development of equipment for large-scale underground hydrogen storage and hydrogen refueling stations requires research into the mechanical properties of materials under high pressure and low temperature hydrogen environments to ensure their safety and reliability.

[0003] In existing technologies, mechanical testing devices suffer from problems such as low sample replacement efficiency and complex operation when replacing samples in a high-pressure, low-temperature hydrogen environment. Utility Model Content

[0004] This invention provides a rapid sample changing device for high-pressure and low-temperature environmental mechanical testing, which solves the defects of low sample changing efficiency and complex operation in the prior art, thereby improving sample changing efficiency.

[0005] This utility model provides a rapid sample changing device for high-pressure, low-temperature environmental mechanical testing, comprising:

[0006] A loading rod, the first end of which is used to apply a loading force, and the second end of the loading rod is detachably connected to a sample;

[0007] The reverser has a first end connected to the loading rod and a second end connected to the other end of the sample.

[0008] An air cavity is provided through which the loading rod passes, and the top of the air cavity is dynamically sealed to the loading rod;

[0009] The test chamber is connected to the air chamber, and the second end of the loading rod extends into the interior of the test chamber.

[0010] According to the present invention, a rapid sample changing device for high-pressure, low-temperature environmental mechanical testing is provided, wherein the test chamber comprises:

[0011] A vacuum cover is fitted onto the outer periphery of the air cavity. The vacuum cover is used to connect to the vacuum cover, and a vacuum extraction port is provided on the vacuum cover.

[0012] An autoclave lid is disposed on the outer periphery of the bottom of the gas chamber, and the autoclave lid is used to connect the autoclave; the gas chamber is in communication with the autoclave, and the autoclave is located inside the vacuum hood.

[0013] According to the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model, it further includes:

[0014] A sealing flange is disposed at the top of the air chamber, and the sealing flange achieves sealing through a dynamic sealing assembly.

[0015] According to the present invention, a rapid sample changing device for high-pressure low-temperature environmental mechanical testing is provided, wherein a mounting base is provided on the sealing flange, and the mounting base is used to connect a heating resistor and a thermometer for temperature control.

[0016] According to the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model, it further includes:

[0017] A first clamp, the first end of which is connected to the second end of the loading rod;

[0018] The second clamp, the first end of which is connected to the second end of the reverser;

[0019] The sample is held together by the second end of the first clamp and the second end of the second clamp.

[0020] According to the present invention, a rapid sample changing device for high-pressure, low-temperature environmental mechanical testing is provided, wherein the reverser includes:

[0021] The upper seat of the inverter is connected to the loading rod;

[0022] Multiple inverter connecting rods, one end of each inverter connecting rod is connected to the inverter upper seat;

[0023] The reverser base is connected to the other end of the reverser connecting rod; and the reverser base is connected to the first end of the second clamp; the first clamp and the second clamp are located within the space enclosed by the multiple reverser connecting rods.

[0024] According to the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model, it further includes:

[0025] The upper flange of the air chamber is sealed to the sealing flange.

[0026] The lower flange of the air chamber is sealed to the vacuum cover.

[0027] According to the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model, it further includes:

[0028] A tension rod flange is provided for the loading rod to pass through, and the tension rod flange is used to connect to a mechanical testing machine;

[0029] A connecting rod is located on the side of the tension rod flange facing away from the mechanical testing machine.

[0030] According to the present invention, a rapid sample changing device for high-pressure and low-temperature environmental mechanical testing is provided, wherein the loading rod, the sealing flange, the upper seat of the reverser, the base of the reverser, the first clamp, the second clamp, the sample, the vacuum cover, the gas chamber, the upper flange of the gas chamber, and the lower flange of the gas chamber are all coaxially arranged.

[0031] According to the present invention, a rapid sample changing device for high-pressure and low-temperature environmental mechanical testing further includes a sleeve located at the bottom of the sealing flange, and the sleeve is fitted around the outer periphery of the loading rod, with the bottom end of the sleeve extending to the upper seat of the reverser.

[0032] This utility model provides a rapid sample change device for high-pressure and low-temperature environmental mechanical testing. A loading rod has a first end for applying load force and a second end detachably connected to a sample. A reverser has a first end connected to the loading rod and a second end connected to the other end of the sample. The reverser solves the installation problem between the device and the mechanical testing machine. A gas chamber allows the loading rod to pass through, and the top of the gas chamber is dynamically sealed to the loading rod. The test chamber is connected to the gas chamber, and the second end of the loading rod extends into the test chamber. When sample change is needed, simply lift the entire loading rod upwards until the reverser is above the gas chamber, remove and replace the sample, and then lower the entire loading rod down to the top of the gas chamber for a sealed connection, thus completing the sample change. This improves sample change efficiency and is simple to operate. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic overall structural diagram of the rapid sample changing device for high-pressure and low-temperature environmental mechanical testing provided by this utility model when the sample is not changed.

[0035] Figure 2 This is a schematic overall structural diagram of a rapid sample changer used for mechanical testing in high-pressure and low-temperature environments during sample change.

[0036] Figure 3 A schematic top view of the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model.

[0037] Figure 4 yes Figure 3Schematic cross-sectional view along the AA direction.

[0038] Figure label:

[0039] 1. Loading rod; 2. Sample; 3. Reversing device; 31. Reversing device upper seat; 32. Reversing device connecting rod; 33. Reversing device base; 4. Gas chamber; 5. Test chamber; 51. Vacuum cover; 52. Autoclave cover; 6. Sealing flange; 7. Air-insertion base; 8. First clamp; 9. Second clamp; 10. Gas chamber upper flange; 11. Gas chamber lower flange; 12. Tension rod flange; 13. Connecting rod; 14. Sleeve. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] The following is combined with Figures 1-4 This invention describes a rapid sample changing device for high-pressure, low-temperature environmental mechanical testing.

[0043] like Figure 1 As shown in the figure, the rapid sample changing device for high-pressure low-temperature environmental mechanical testing provided in this embodiment of the utility model includes a loading rod 1, a reverser 3, a gas chamber 4, and a test chamber 5.

[0044] The first end of the loading rod 1 can be connected to a force loading device to apply a loading force, and the second end of the loading rod 1 is detachably connected to a sample 2, which is usually the test material to be mechanically tested. The first end of the reverser 3 is connected to the loading rod 1, and the second end of the reverser 3 is connected to the other end of the sample 2. By setting up the reverser 3, the force can be reversed during the loading process, which greatly enriches the scenarios and methods of mechanical testing and ensures the comprehensiveness and accuracy of the test results.

[0045] The air chamber 4 is hollow inside, allowing the loading rod 1 to pass through one end of the air chamber 4 and extend outward. The top of the air chamber 4 is dynamically sealed to the loading rod 1. In this way, even when the loading rod 1 applies the full loading force, the air chamber 4 can still maintain a good sealing state, effectively avoiding internal gas leakage and ensuring the stability and reliability of the test environment.

[0046] Test chamber 5 is connected to air chamber 4. Test chamber 5 provides the high-pressure and low-temperature environment required for the test, and the second end of loading rod 1 extends into the interior of test chamber 5, allowing the sample to be placed under high-pressure and low-temperature conditions. By applying loading force through loading rod 8, mechanical testing can be performed on the experiment. At this time, when loading force is applied through loading rod 1, comprehensive mechanical testing can be carried out on sample 2, providing strong support for studying the mechanical properties of materials under extreme environments.

[0047] like Figure 1 and Figure 2 As shown, sample replacement is simple. Simply lift the loading rod 1 upwards until the reverser 3 is above the gas chamber 4, and sample 2 can be easily removed and replaced. Then, lower the loading rod 1 until the top of the gas chamber 4 re-seales with the loading rod 1, thus efficiently completing the sample replacement operation. Compared to traditional methods, this sample replacement method significantly improves efficiency, greatly simplifies the operation process, drastically shortens the testing cycle, saves considerable time and effort, and powerfully promotes the efficient implementation of high-pressure, low-temperature environmental mechanical testing.

[0048] In some feasible embodiments of this utility model, the test chamber 5 includes a vacuum hood (not shown in the figure), a vacuum hood cover 51, an autoclave (not shown in the figure), and an autoclave cover 52. The vacuum hood cover 51 is fitted onto the outer periphery of the gas chamber 4 and is used to connect the vacuum hood. The vacuum hood cover 51 is provided with a vacuum extraction port 511, which allows for rapid extraction of air from the vacuum hood, creating a near-vacuum environment. In high-pressure, low-temperature mechanical testing, the low-pressure vacuum environment effectively eliminates interference factors such as impurities and water vapor in the air. For example, when testing hydrogen storage tank test materials, it avoids the material surface reacting chemically with air components or adsorbing water vapor, thus preventing the accuracy of test results from being affected. This ensures that the test is conducted in a pure, extreme physical environment, improving the reliability and scientific validity of the test data.

[0049] Furthermore, the vacuum cover 51 and the vacuum cover can be connected by bolts to achieve an internal vacuum environment, further achieving heat preservation, and the cooling capacity can be provided by a refrigerator when conducting tests under low temperature conditions.

[0050] The autoclave lid 52 is located on the outer periphery of the bottom of the gas chamber 4 and is used to connect the autoclave. The gas chamber 4 is connected to the autoclave, allowing the high-pressure environment inside the autoclave to be stably transmitted to the test chamber 5 and act on the sample 2. This ensures that the sample 2 can continuously withstand precise and stable high-pressure conditions during the test. Taking the simulation of a hydrogen storage tank under high pressure in actual operation as an example, a stable high-pressure environment allows the test results to better reflect real-world usage conditions, providing accurate data for evaluating the material's performance under high-pressure conditions. This helps to gain a deeper understanding of the material's mechanical properties under high pressure, thereby optimizing material design and processes.

[0051] The autoclave is located inside a vacuum chamber, and the two are nested together. Additionally, a pressure machine is installed inside the autoclave to monitor the internal pressure. The autoclave lid 52 is bolted to the autoclave, and a knife-edge flange ensures a low-temperature seal.

[0052] In some feasible embodiments of this utility model, a sealing flange 6 is also included. The sealing flange 6 is disposed at the top of the gas chamber 4, and the sealing flange 6 achieves sealing through a high-pressure dynamic sealing assembly. The cooperative work of the sealing flange 6 and the high-pressure dynamic sealing assembly constructs an extremely reliable sealing structure. In high-pressure low-temperature environmental mechanical testing, the test chamber 5 needs to maintain a precise and stable high-pressure state. As a key sealing component at the top of the gas chamber 4, the sealing flange 6, in close cooperation with the suitable high-pressure dynamic sealing assembly, can effectively resist the pressure difference under high-pressure environment and prevent gas leakage. During the reciprocating motion of the loading rod 1, it can maintain good sealing performance without excessively hindering the movement of the loading rod 1, ensuring smooth transmission and precise application of the loading force.

[0053] In some feasible embodiments of this utility model, a mounting base 7 is provided on the sealing flange 6. The mounting base 7 is used to connect the heating resistor and the thermometer for temperature control. The thermometer is connected to the test environment through the mounting base 7, enabling real-time and accurate measurement of the temperature inside the test chamber 5. In high-pressure, low-temperature mechanical testing, temperature is a critical influencing factor; even small temperature fluctuations can significantly affect the mechanical properties of the material. After the heating resistor is connected to the mounting base 7, precise temperature adjustment can be performed based on the temperature data measured by the thermometer. When the temperature inside the test chamber 5 is too low, the heating resistor can operate to raise the temperature; when the temperature is too high, the heating power can be reduced or other cooling measures can be taken.

[0054] In some feasible embodiments of this utility model, a first clamp 8 and a second clamp 9 are also included. The first end of the first clamp 8 is connected to the second end of the loading rod 1; the first end of the second clamp 9 is connected to the second end of the reverser 3; and the second ends of the first clamp 8 and the second ends of the second clamp 9 jointly clamp the sample 2, which can provide a stable and balanced clamping force from both sides.

[0055] When sample 2 needs to be replaced, the high-pressure hydrogen must be released and the chamber reheated after the experiment is stopped to prevent hydrogen leakage and explosion, and to prevent water vapor in the air from entering the test chamber and condensing. Since the first clamp 8 and the second clamp 9 are connected to the loading rod 1 and the reverser 3 respectively, the loading rod 1 can be lifted as a whole, so that the reverser 3 is higher than the gas chamber 4. In this state, the clamps can be easily opened, the old sample 2 can be removed and replaced with the new sample 2, and then the loading rod 1 can be lowered to return to the testing state. This design greatly simplifies the sample replacement process, eliminating the need for complex operations inside a high-pressure, low-temperature environment. This not only improves the efficiency of sample replacement but also reduces the operational risks for operators in extreme environments.

[0056] In addition, the first clamp 8 and the second clamp 9 can be flexibly adjusted and replaced according to the specific characteristics of the sample 2.

[0057] In some feasible embodiments of this utility model, the reverser 3 includes a reverser upper seat 31, a reverser base 33, and multiple reverser connecting rods 32. The reverser upper seat 31 is connected to the loading rod 1, which transmits force to the reverser upper seat 31. One end of each reverser connecting rod 32 is connected to the reverser upper seat 31, and the reverser base 33 is connected to the other end of the reverser connecting rod 32. The reverser base 33 is connected to the first end of the second clamp 9. The loading force is transmitted to the reverser base 33 through the multiple reverser connecting rods 32, and finally to the second clamp 9.

[0058] Multiple reversing connecting rods 32 are evenly distributed, which can evenly distribute the loading force and avoid structural damage caused by excessive local stress. The reversal of the loading force is achieved through the cooperation of the reversing upper seat 31, the reversing connecting rods 32 and the reversing base 33. The first clamp 8 and the second clamp 9 are located in the space enclosed by the multiple reversing connecting rods 32. When it is necessary to adjust the first clamp 8 and the second clamp 9 or replace the sample 2, the operating space is relatively open, which facilitates operation and improves work efficiency.

[0059] In some feasible embodiments of this utility model, an upper flange 10 and a lower flange 11 are also included. The upper flange 10 is sealed to the sealing flange 6, and the lower flange 11 is sealed to the vacuum cover 51. In high-pressure and low-temperature environmental mechanical testing, the test chamber 5 needs to maintain stable high pressure and precise low-temperature conditions. Any minute leakage may disrupt the test environment and lead to inaccurate test results. This multi-stage sealing design greatly enhances the sealing performance between the air chamber 4 and the external environment. The upper flange 10 and the lower flange 11 are connected to the sealing flange 6 and the vacuum cover 51, respectively, providing stable support and connection for the air chamber 4 from both ends. During device operation, the loading rod 1 will generate certain vibration and impact forces when applying loading force. The air chamber 4 needs to remain stable to ensure the accuracy of the test. The presence of the upper flange 10 and the lower flange 11 makes the connection between the air chamber 4 and the surrounding components more robust, effectively resisting these external forces and preventing the air chamber 4 from displacement, shaking, or other unstable conditions, thus ensuring the structural stability of the entire testing device during operation.

[0060] In some feasible embodiments of this utility model, a tension rod flange 12 and a connecting rod 13 are also included. The tension rod flange 12 is for the loading rod 1 to pass through and is used to connect to the mechanical testing machine. The connecting rod 13 is disposed on the side of the tension rod flange 12 facing away from the mechanical testing machine. The mechanical testing machine can directly apply a loading force to the loading rod 1. In this case, the loading rod 1 needs to pass through a through hole on the tension rod flange 12, and the loading rod 1 can move relative to the tension rod flange 12.

[0061] In some feasible embodiments of this utility model, the loading rod 1, sealing flange 6, upper reverser seat 31, reverser base 33, first clamp 8, second clamp 9, sample 2, vacuum cover 51, air chamber 4, upper flange 10 of the air chamber, and lower flange 11 of the air chamber are all coaxially arranged. This arrangement ensures that the force is not skewed or dispersed during transmission, guaranteeing that the force on sample 2 is axial and uniform. This is crucial for accurately measuring the mechanical properties of materials under high pressure and low temperature conditions, thus making the test results more accurately reflect the mechanical properties of the material. The coaxial arrangement avoids additional bending or torsional stresses caused by misalignment of components. These additional stresses can interfere with the evaluation of the true mechanical properties of sample 2 and may lead to deviations in the test results.

[0062] like Figure 3 and Figure 4 As shown, in some feasible embodiments of this utility model, a sleeve 14 is also included, located at the bottom of the sealing flange 6, and the sleeve 14 is sleeved on the outer periphery of the loading rod 1, with the bottom end of the sleeve 14 extending to the upper seat 31 of the reverser. The sleeve 14 provides additional support and guidance for the loading rod 1. During the application of loading force by the loading rod 1, some shaking or displacement may occur. The sleeve 14 can limit the radial displacement of the loading rod 1, keeping it in stable axial movement, and ensuring that the loading force can be accurately transmitted to the sample 2.

[0063] The process of using the rapid sample changing device for high-pressure, low-temperature environmental mechanical testing provided by this utility model is as follows:

[0064] (1) Conduct the experiment according to the experimental procedure for high pressure and low temperature environment;

[0065] (2) After the test is completed and the hydrogen inside the autoclave has been replaced, loosen the bolts between the sealing flange 6 and the gas chamber flange 10;

[0066] (3) Use a lifting device to lift the loading rod 1 as a whole upward until the reverser base 33 is higher than the upper flange 10 of the air chamber;

[0067] (4) Loosen the first clamp 8 and / or the second clamp 9 to replace sample 2;

[0068] (5) Use a lifting device to lower the loading rod 1 as a whole until the sealing flange 6 contacts the upper flange 10 of the air chamber;

[0069] (6) The change of sample is completed by fixing the sealing flange 6 to the upper flange 10 of the air cavity with bolts.

[0070] In summary, the rapid sample changing device for high-pressure and low-temperature mechanical testing provided by this utility model solves the installation problem between the device and the mechanical testing machine by using a reverser, and couples the low-temperature and high-pressure environments by using a refrigerator to provide cooling capacity, which is safer and more convenient.

[0071] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rapid sample changing device for mechanical testing in a high-pressure, low-temperature environment, characterized in that, include: The loading rod (1) has a first end for applying a loading force, and the second end of the loading rod (1) is detachably connected to a sample (2). The first end of the reverser (3) is connected to the loading rod (1), and the second end of the reverser (3) is connected to the other end of the sample (2); An air cavity (4) is provided through which the loading rod (1) passes, and the top of the air cavity (4) is dynamically sealed to the loading rod (1); The test chamber (5) is connected to the air chamber (4), and the second end of the loading rod (1) extends into the interior of the test chamber (5).

2. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 1, characterized in that, The test chamber (5) includes: A vacuum cover (51) is fitted on the outer periphery of the air chamber (4). The vacuum cover (51) is used to connect the vacuum cover, and a vacuum extraction port (511) is provided on the vacuum cover (51). The pressure vessel cover (52) is located on the outer periphery of the bottom of the gas chamber (4), and the pressure vessel cover (52) is used to connect the pressure vessel; the gas chamber (4) is connected to the pressure vessel, and the pressure vessel is located inside the vacuum hood.

3. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 2, characterized in that, Also includes: A sealing flange (6) is disposed on the top of the air chamber (4), and the sealing flange (6) is sealed by a dynamic sealing assembly.

4. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 3, characterized in that, The sealing flange (6) is provided with a mounting base (7), which is used to connect a heating resistor and a thermometer for temperature control.

5. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 3, characterized in that, Also includes: A first clamp (8) is connected at its first end to the second end of the loading rod (1); The second clamp (9) has its first end connected to the second end of the reverser (3); The second end of the first clamp (8) and the second end of the second clamp (9) together clamp the sample (2).

6. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 5, characterized in that, The inverter (3) includes: The upper seat of the reverser (31) is connected to the loading rod (1); Multiple inverter connecting rods (32), one end of each inverter connecting rod (32) is connected to the inverter upper seat (31); The reverser base (33) is connected to the other end of the reverser connecting rod (32); and the reverser base (33) is connected to the first end of the second clamp (9); the first clamp (8) and the second clamp (9) are located in the space enclosed by the multiple reverser connecting rods (32).

7. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 6, characterized in that, Also includes: The upper flange (10) of the air chamber is sealed to the sealing flange (6); The lower flange (11) of the air chamber is sealed to the vacuum cover (51).

8. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 1, characterized in that, Also includes: Tension bar flange (12) for the loading rod (1) to pass through, the tension bar flange (12) is used to connect to the mechanical testing machine; The connecting rod (13) is located on the side of the tension rod flange (12) facing away from the mechanical testing machine.

9. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 7, characterized in that, The loading rod (1), the sealing flange (6), the upper seat of the reverser (31), the base of the reverser (33), the first clamp (8), the second clamp (9), the sample (2), the vacuum cover (51), the air chamber (4), the upper flange (10) of the air chamber and the lower flange (11) of the air chamber are all coaxially arranged.

10. The rapid sample changing device for high-pressure, low-temperature environmental mechanical testing according to claim 6, characterized in that, It also includes a sleeve (14) located at the bottom of the sealing flange (6), and the sleeve (14) is fitted around the outer periphery of the loading rod (1), with the bottom end of the sleeve (14) extending to the upper seat (31) of the reverser.

Images