Small punch creep test apparatus and system

Abstract

This invention discloses a small punch creep testing device, relating to the field of micro-sample testing technology. It includes a clamp assembly, a receiving assembly, a first loading mechanism, a second loading mechanism, and a displacement measuring mechanism. The clamp assembly includes a first clamp and a second clamp for holding the sample. The receiving assembly has a first end connected to the second clamp, pressing the first and second clamps together and forming a sealed end with the sample. The first end of the receiving assembly has an opening, and the first clamp has a first through hole communicating with the opening, allowing the high-temperature medium inside the receiving assembly to contact the sample. The first loading mechanism is connected to the receiving assembly. The second clamp has a second through hole coaxial with the sample, through which the second loading mechanism can pass and contact the sample. The displacement measuring mechanism can measure the displacement of the sample. This invention also provides a small punch creep testing system. This invention can avoid leakage of the high-temperature medium and ensure contact between the high-temperature medium and the sample.

Description

Technical Field

[0001] This invention relates to the field of micro-sample testing technology, and in particular to a small punch creep testing device and system. Background Technology

[0002] Currently, my country and other countries worldwide face energy and climate crises, leading to widespread attention and research into efficient, clean, and sustainable energy technologies. Among these, technologies in various energy sectors, such as molten salt reactors (MSR) in fourth-generation nuclear energy, concentrated solar power (CSP) in solar photovoltaics, and liquid metal batteries (LMB) in grid energy storage, all widely utilize high-temperature molten salt as the working medium. In the heat and mass transfer processes of these systems, numerous pipes, heat exchangers, and storage containers come into direct contact with the high-temperature molten salt. Metal structures exposed to molten fluoride salts and chloride salts at temperatures of 600℃–700℃ or even higher pose significant corrosion risks. Therefore, evaluating the mechanical properties of materials in high-temperature environments and studying the interaction between stress and corrosion have become crucial for development in the energy sector.

[0003] Small Punch Test (SPT) is a semi-non-destructive testing technique that involves cutting a small amount of material from a component, typically a Ф10mm × 0.5mm circular metal sheet. It was first used in the 1980s to study the damage levels caused by irradiation in container steel. After years of research, this technique can now accurately test the tensile mechanical properties, fracture properties, and creep properties of materials. Furthermore, in 2006, Europe established corresponding small punch test standards, confirming the current importance of SPT. Multiple research groups in my country and around the world are working to promote its standardization.

[0004] The current Small Punch Creep Test (SPCT) apparatus uses upper and lower clamps to fix the sample. The sample is a Ф10mm×0.5mm metal disc. The upper clamp has a Ф2.5mm circular hole, and the lower clamp has a Ф4mm circular hole with a 0.2mm chamfer at the contact point with the sample. During the test, the load is applied to the center of the sample through the pressure bar and pressure ball in the center of the upper clamp. The sample deforms under the action of creep damage, generating deflection at the bottom. The displacement sensor at the bottom of the sample records the time-displacement curve. This technology can be used to characterize the high-temperature creep properties of materials.

[0005] Existing small punch creep testing devices can effectively test the high-temperature mechanical properties of materials in in-service equipment, but they cannot be used to test stress-high-temperature medium corrosion interactions. This is due to the following problems with existing small punch creep testing devices:

[0006] In conventional small punch creep testing devices, the loading mechanism is placed above the specimen, and the sensor is placed below the specimen to detect specimen deformation. Generally, specimen damage occurs from the unloaded side, that is, the specimen is damaged from the bottom. Therefore, the specimen needs to come into contact with the high-temperature medium from the bottom where the damage occurs in order to study its interaction, but the structure below the specimen is difficult to seal the medium. Summary of the Invention

[0007] The purpose of this invention is to provide a small punch creep testing device and system to solve the problems existing in the prior art, which can avoid leakage of high-temperature medium and ensure contact between high-temperature medium and sample.

[0008] To achieve the above objectives, the present invention provides the following solution:

[0009] This invention provides a small punch creep testing device, comprising:

[0010] A clamping assembly, comprising a first clamp and a second clamp that can be engaged, the first clamp and the second clamp being used to clamp a sample;

[0011] The receiving component has a first end connected to the second clamp and capable of pressing the first clamp and the second clamp together. After the first end of the receiving component is connected to the second clamp, it can form a sealed end together with the sample. The receiving component is provided with a receiving cavity for containing a high-temperature medium. The first end of the receiving component is provided with an opening, and the first clamp is provided with a first through hole communicating with the opening, so that the high-temperature medium in the receiving component can contact the sample.

[0012] A first loading mechanism is connected to the receiving component;

[0013] The second loading mechanism has a second through hole coaxial with the sample on the second fixture, and the second loading mechanism can pass through the second through hole and contact the sample.

[0014] The first loading mechanism can be connected to the power mechanism;

[0015] A displacement measuring mechanism, which is capable of measuring the displacement of the sample.

[0016] Preferably, the first clamp is located above the second clamp, the bottom of the first loading mechanism is connected to the top of the receiving component, and the top of the second loading mechanism can pass upward through the second through hole and contact the bottom of the sample.

[0017] Preferably, the receiving assembly includes a main housing, the main housing having a receiving cavity, a first clamping platform being provided on the inner wall of the first end of the receiving cavity, and a second clamping platform corresponding to the first clamping platform being provided on the inner wall of the second clamp, the first clamping platform being able to clamp the first clamp and the sample onto the second clamping platform; a sealing cap is installed at the second end of the main housing;

[0018] The first pressing platform is provided with the opening, and the second pressing platform is provided with the second through hole.

[0019] Preferably, an installation groove is provided between the second clamping platform and the inner wall of the second clamp, the first end of the main housing is installed in the installation groove, and a clamping pad is provided between the first end of the main housing and the installation groove.

[0020] Preferably, the receiving assembly is further equipped with a protective air pipe and an exhaust pipe, both of which are connected to the receiving cavity.

[0021] Preferably, a temperature sensor is also installed on the housing component.

[0022] Preferably, the first loading mechanism is a loading rod, one end of which is connected to the receiving assembly, and the other end is used to connect to a power mechanism. The power mechanism can drive the loading rod to move axially so as to apply pressure to the first clamp through the receiving assembly.

[0023] Preferably, the second loading mechanism includes a pressure column seat, a pressure column, and a pressure rod arranged coaxially. The pressure column is disposed on the pressure column seat, the pressure rod is disposed on the pressure column, and one end of the pressure rod away from the pressure column extends into the second through hole. A pressure ball is also disposed between the pressure rod and the sample.

[0024] Preferably, the displacement measuring mechanism includes a measuring frame and a measuring rod. The measuring frame is connected to the second clamp, one end of the measuring rod is in contact with the measuring frame, and the other end is connected to a displacement sensor.

[0025] Preferably, the small punch creep testing device further includes a support base, the second loading mechanism is mounted on the support base, a guide post is provided on the support base, the receiving component is slidably mounted on the guide post, and the guide post is parallel to the axial direction of the sample.

[0026] The present invention also provides a small punch creep testing system, including a heating furnace and the above-mentioned small punch creep testing device, wherein the small punch creep testing device is installed in the heating furnace.

[0027] The present invention achieves the following beneficial technical effects compared to the prior art:

[0028] The present invention provides loading mechanisms on both sides of the clamp assembly. The second loading mechanism can contact the middle of the sample to form support, and the first loading mechanism loads the outer edge of the sample, so that there is space in the middle position of the side where the first clamp is located, which can be used to set up a receiving component for containing high-temperature medium. Placing the high-temperature medium in the receiving component can ensure the sealing of the high-temperature medium. Moreover, the first end of the receiving component is provided with an opening, and the first clamp is provided with a first through hole communicating with the opening, so that the high-temperature medium in the receiving component can contact the sample through the opening and the first through hole, so as to facilitate the small punch creep test in a high-temperature medium environment. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a cross-sectional view of the small punch creep testing device in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram showing the installation of the high-temperature medium containing mechanism, the first clamp, and the second clamp in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the second loading mechanism in an embodiment of the present invention;

[0033] Figure 4 This is a three-dimensional schematic diagram of the small punch creep test device without a sealing cover in an embodiment of the present invention;

[0034] Figure 5 This is the time-displacement curve of the sample in an embodiment of the present invention;

[0035] Among them, 1 is the protective gas tube; 2 is the loading rod; 3 is the thermocouple; 4 is the sealing cap; 5 is the receiving assembly; 6 is the sealing cap gasket; 7 is the first clamp; 8 is the sample; 9 is the clamp gasket; 10 is the pressure ball; 11 is the pressure rod; 12 is the pressure column; 13 is the second clamp; 14 is the guide column; 15 is the measuring frame; 16 is the pressure column seat; 17 is the measuring rod; and 18 is the support seat. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The purpose of this invention is to provide a small punch creep testing device to solve the problems existing in the prior art, which can avoid leakage of high-temperature medium and ensure contact between high-temperature medium and sample.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] like Figures 1-5As shown, this embodiment provides a small punch creep testing device and system, mainly including a clamp assembly, a receiving assembly 5, a first loading mechanism, a second loading mechanism, and a displacement measuring mechanism; wherein, the clamp assembly includes a first clamp 7 and a second clamp 13 that can be interlocked, the first clamp 7 and the second clamp 13 can be respectively disposed on both sides of the sample 8 to clamp the sample 8; the receiving assembly 5 is located on the side of the first clamp 7 opposite to the second clamp 13, the first end of the receiving assembly 5 is connected to the second clamp 13, and can press the first clamp 7 and the second clamp 13 tightly, and after the first end of the receiving assembly 5 is connected to the second clamp 13, it can form a sealed end together with the sample 8; the receiving assembly 5 is provided with a receiving cavity for receiving a high-temperature medium, wherein, the high The high-temperature medium is a mature existing technology in this field, and will not be described in detail in this embodiment. It can be a granular or molten high-temperature medium. The first end of the receiving component 5 is provided with an opening, and the first clamp 7 is provided with a first through hole communicating with the opening, so that the high-temperature medium in the receiving component 5 can pass through the opening and the first through hole to contact the sample 8. The first end of the receiving component 5 contacts the edge of the first clamp 7 surrounding the first through hole, and can press the edge. The first loading mechanism is connected to the receiving component 5. The second clamp 13 has a second through hole coaxial with the sample 8 in the middle. The second loading mechanism is adapted to the second through hole and can pass through the second through hole and contact the sample 8. The displacement measuring mechanism can measure the displacement of the sample 8.

[0041] It should be noted that the sample 8 is typically a circular, thin sheet-like sample. The first clamp 7, the second clamp 13, and the receiving component 5 are correspondingly cylindrical structures, all coaxially arranged with the sample 8. Coaxial arrangement means that the axes of the aforementioned cylindrical structures are collinear. The aforementioned openings, the first through hole, and the second through hole are all circular holes coaxially arranged with the sample 8. Alternatively, the shapes of the first clamp 7, the second clamp 13, and the receiving component 5 may not be the same as the shape of the sample 8; they may be polygonal cylindrical structures. Furthermore, the sample 8 may also be selected in other shapes according to the working requirements, such as a regular polygon. In this case, the shapes of the first clamp 7, the second clamp 13, and the receiving component 5 can be set according to the working requirements.

[0042] In this embodiment, loading mechanisms are provided on both sides of the clamp assembly. The second loading mechanism can contact the middle of one side of the sample 8 to form a support, and the second loading mechanism and the displacement measuring mechanism are located on the same side of the sample 8. The first loading mechanism loads the outer edge of the other side of the sample 8, so that there is space in the middle of the side where the first clamp 7 is located, which can be used to set up a receiving component 5 for containing high-temperature medium. Placing the high-temperature medium in the receiving component 5 can ensure the sealing of the high-temperature medium. Moreover, the first end of the receiving component 5 is provided with an opening, and the first clamp 7 is provided with a first through hole communicating with the opening, so that the high-temperature medium in the receiving component 5 can contact the sample 8 through the opening and the first through hole, so as to facilitate the small punch creep test in the high-temperature medium environment.

[0043] In this embodiment, the first clamp 7 and the second clamp 13 can be arranged vertically. Specifically, the first clamp 7 is located directly above the second clamp 13. The bottom of the first loading mechanism is connected to the top of the receiving assembly 5, and the top of the second loading mechanism can pass upward through the second through hole and contact the bottom of the sample 8. In this embodiment, the receiving assembly 5 includes a main housing. A cylindrical receiving cavity for receiving a high-temperature medium is coaxially arranged inside the main housing. A first pressing platform is provided protruding inward on the inner wall of the bottom end of the receiving cavity. The bottom of the first pressing platform is provided with a positioning groove for placing the sample 8 and the first clamp 7. A second pressing platform corresponding to the first pressing platform is provided on the inner wall of the second clamp 13. The first pressing platform can press the first clamp 7 and the sample 8 onto the second pressing platform. The first pressing platform is provided with the aforementioned opening, and the second pressing platform is provided with the aforementioned second through hole.

[0044] In this embodiment, an annular mounting groove is provided between the second clamping platform and the inner wall of the second clamp 13. The bottom end of the main housing is installed in the mounting groove, and a clamp gasket 9 is provided between the bottom end of the main housing and the bottom wall of the mounting groove to ensure sealing. To allow for the installation of the sample 8 and the first clamp 7, the main housing and the second clamp 13 are detachably connected, or the first clamping platform is detachably installed inside the main housing. In this embodiment, it is preferable that the main housing and the second clamp 13 are detachably connected. Specifically, an external thread is provided on the outer side of the bottom end of the main housing, and a corresponding internal thread is provided on the inner wall of the second clamp 13. The main housing and the second clamp 13 are threaded together to achieve detachability; alternatively, the main housing and the second clamp 13 can also be detachably connected by bolts or snap-fit ​​connections.

[0045] In this embodiment, a top opening is provided at the top of the main housing, and a sealing cover 4 is detachably connected to the top opening. By opening the sealing cover 4, a high-temperature medium can be added into the receiving cavity. Preferably, the sealing cover 4 is threadedly connected to the top of the main housing. Specifically, a threaded groove is provided at the top opening of the main housing, and the sealing cover 4 is threaded into the threaded groove. A sealing cover gasket 6 is provided between the bottom of the sealing cover 4 and the bottom of the threaded groove to seal and prevent gas leakage. Alternatively, the top of the main housing can be closed, and an inlet pipe and a outlet pipe are provided on the main housing to realize the addition or discharge of the high-temperature medium.

[0046] In this embodiment, a protective gas pipe 1 and an exhaust pipe are also installed on the sealing cover 4. Both the protective gas pipe 1 and the exhaust pipe are connected to the receiving cavity. The protective gas pipe 1 is connected to a gas cylinder, through which protective gases such as argon and helium can be introduced into the receiving cavity. The exhaust pipe can discharge the gas, and a pressure gauge is installed on the exhaust pipe to monitor the gas pressure in the receiving cavity. In this embodiment, the protective gas pipe 1 is used to introduce protective gas into the receiving cavity, which can gas-seal the high-temperature medium and effectively prevent the oxidation of the high-temperature medium and the sample 8 by air.

[0047] In this embodiment, a temperature sensor is also installed on the sealing cover 4 for monitoring the temperature of the high-temperature medium. The temperature sensor can be selected according to the working requirements, such as thermocouple 3, thermistor, resistance temperature detector (RTD), etc. In this embodiment, the temperature sensor is preferably thermocouple 3.

[0048] In this embodiment, the protective gas pipe 1 and the exhaust pipe are preferably welded to the sealing cover 4, and the thermocouple 3 is preferably inserted into the sealing cover 4. Alternatively, the protective gas pipe 1, the exhaust pipe, and the thermocouple 3 can also be installed on the main housing.

[0049] In this embodiment, the first loading mechanism is preferably a loading rod 2. One end of the loading rod 2 is connected to the receiving component 5, and the other end is used to connect to the power mechanism. The power mechanism can drive the loading rod 2 to move axially so as to apply pressure to the sample 8 through the receiving component 5 and the first clamp 7. The loading rod 2 is preferably a cylindrical rod. The loading rod 2 is connected to the sealing cover 4 and is coaxially arranged with the receiving component 5. The power mechanism can be selected according to specific working needs, such as a linear motor or a hydraulic cylinder.

[0050] In this embodiment, the second loading mechanism includes a pressure column seat 16, a pressure column 12, a pressure rod 11, and a pressure ball 10 arranged coaxially. The pressure column 12 is disposed on the pressure column seat 16, and the pressure rod 11 is disposed on the pressure column 12. The top of the pressure rod 11 extends into the second through hole, and a pressure ball 10 is also disposed between the pressure column 12 and the sample 8. The pressure ball 10 contacts the pressure rod 11 and the sample 8. Alternatively, only the pressure rod 11 may be provided, with the top of the pressure rod 11 extending into the second through hole, and a pressure ball 10 may also be disposed between the pressure column 12 and the sample 8.

[0051] In this embodiment, the displacement measuring mechanism includes a measuring frame 15 and a measuring rod 17. The measuring frame 15 is threadedly connected to the bottom of the second clamp 13. A crossbar is provided at the bottom of the measuring frame 15, and the top of the measuring rod 17 contacts the middle of the crossbar on the measuring frame 15. In this embodiment, the loading rod 2 is driven to move axially downward by the power mechanism, which can apply a load to the top edge of the sample 8. The second loading mechanism can support the bottom middle position of the sample 8 to apply a load, thereby causing the sample 8 to deform. During this process, the loading rod 2 drives the receiving assembly 5, the first clamp 7, the second clamp 13, the measuring frame 15, and the measuring rod 17 to move downward. The bottom end of the measuring rod 17 is connected to a displacement sensor fixed on the frame. The displacement sensor is connected to displacement recording software to record the displacement of the measuring rod 17, thereby obtaining the historical displacement data of the sample 8.

[0052] The measuring frame 15 has through holes on both sides of the crossbar for the pressure column seat 16 to pass through, so that the measuring frame 15 can move axially relative to the pressure column seat 16 and make the measuring frame 15 and the pressure column seat 16 coaxial.

[0053] In this embodiment, the small punch creep testing device also includes a support base 18. The bottom of the second loading mechanism is mounted on the support base 18. A guide post 14 is provided on the support base 18, and the receiving component 5 is slidably mounted on the guide post 14. The guide post 14 is parallel to the axial direction of the receiving component 5, and the guide post 14 can guide the receiving component 5 and restrict its radial movement. The support base 18 has a through hole coaxial with the sample 8 in its middle. The bottom of the measuring rod 17 can pass through this through hole, and the measuring rod 17 can move up and down along the through hole.

[0054] Furthermore, other displacement measuring mechanisms can be selected according to work needs, such as a grating ruler displacement measuring mechanism, which mainly includes a reading head and a grating ruler. The grating ruler can be installed on the guide post 14, and the reading head is installed on the second clamp 13. The relative displacement is obtained by recording the interference fringes generated on the grating ruler during the movement through the detector in the reading head.

[0055] In this embodiment, a second loading mechanism can be connected to a power mechanism while the first loading mechanism remains stationary. The top edge of the sample 8 is supported by the receiving component 5 and the first clamp 7. At this time, the power mechanism drives the second loading mechanism to move axially upward, applying a load to the bottom middle position of the sample 8, causing deformation in the middle of the sample 8. The displacement of the sample 8 can be measured by measuring the displacement of the second loading mechanism.

[0056] This embodiment also provides a small punch creep testing system, including a heating furnace and the aforementioned small punch creep testing device. The aforementioned small punch creep testing device is installed in the heating furnace, and the heating furnace heats the high-temperature medium in the containing component 5. Furthermore, the heating furnace is also connected to a temperature controller, which is connected to a temperature sensor in the containing component 5. The temperature controller controls the heating furnace to heat according to the temperature data detected by the temperature sensor.

[0057] The working process of the small punch creep testing system in this embodiment is as follows:

[0058] The material to be tested is prepared before the test. 8. Circular sheet-shaped samples with a thickness of 0.2 mm to 0.5 mm; such as Figure 2 As shown, sample 8 is placed at the bottom of the first clamping platform in the receiving assembly 5. The first clamp 7 is placed in the positioning groove before the sample 8 is installed. The clamp shim 9 is installed on the second clamp 13. By tightening the second clamp 13 with the receiving assembly 5, the end face of the second pressing platform on the second clamp 13 and the first clamp 7 together clamp the sample 8, thus securing the sample 8.

[0059] The high-temperature medium is filled into the cavity of the receiving component 5, up to the thread below the opening at the top of the main housing; a sealing cover gasket 6 is placed at the bottom of the threaded groove above the receiving component 5, and the sealing cover 4 is screwed into the receiving component 5 to ensure the cavity is sealed; a protective gas pipe is welded onto the sealing cover 4.

[0060] like Figure 3As shown, a pressure ball 10, a pressure rod 11, and a pressure column 12 are placed coaxially from top to bottom below the sample 8. A pressure column seat 16 is installed below the pressure column 12, aligning the pressure ball 10, pressure rod 11, and pressure column 12 with the second through hole on the second clamp 13. A measuring frame 15 is installed upwards from below the pressure column seat 16, with the measuring frame 15 threaded into the second clamp 13. After installing the measuring frame 15, the bottom of the pressure column seat 16 should be higher than the bottom of the measuring frame 15, and the middle crossbar of the measuring frame 15 should be positioned between the bottom grooves of the pressure column seat 16, with no contact between the pressure column seat 16 and the measuring frame 15. During the test loading process, the pressure column seat 16, pressure ball 10, pressure rod 11, pressure column 12, and support seat 18 are under fixed loading and do not move axially. The pressure ball 10 applies a load to the axially downward-moving sample 8, and the deformation of the sample 8 is transmitted to the measuring frame 15 through the second clamp 13.

[0061] like Figure 4 As shown, the components installed in the above implementation process are placed on the support base 18 as a whole; the four guide columns 14 arranged diagonally on the support base 18 pass through the corresponding holes on the receiving component 5, and play a guiding and positioning role; the measuring rod 17 passes out from the center through hole of the support base 18 from below, its top end abuts against the middle crossbar of the measuring frame 15, and its bottom end is connected to the displacement sensor fixed on the frame.

[0062] After the above components are installed, connect the protective gas tube 1 to the external gas cylinder and introduce protective gas. Expel the air in the containment chamber through the exhaust pipe. Install a pressure gauge on the exhaust pipe. Once the pressure in the containment chamber reaches the required pressure, close the gas cylinder. Insert the loading rod 2 and the thermocouple 3 into the corresponding holes on the sealing cover 4 of the containment assembly 5.

[0063] Then, the external heating furnace and the temperature controller connected to thermocouple 3 were turned on. After the temperature controller detected that the high-temperature medium temperature had reached the required test temperature and stabilized for 1 hour, the displacement recording software connected to the displacement sensor was turned on, and a load was applied to the loading rod 2 until the required test load was reached. The specimen 8 was subjected to high-temperature creep and continued to deform until it fractured. At this point, the test ended, and the time-displacement test curve was finally obtained, as shown in the figure. Figure 5 As shown.

[0064] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0065] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A small punch creep testing apparatus, characterized by: The utility model relates to a high-temperature medium test device, comprising: A clamp assembly comprising a first clamp and a second clamp capable of being buckled, the first clamp and the second clamp are used for clamping a test sample; A containing assembly, the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the 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assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the first end of the containing assembly is connected with the second clamp, and the ​ ​ ​ ​ 2. The small punch creep testing apparatus of claim 1, wherein: ​ 3. The small punch creep testing apparatus of claim 1, wherein: ​ ​ 4. The small punch creep testing apparatus of claim 3, wherein: ​ 5. The small punch creep testing apparatus of claim 3, wherein: ​ 6. The small punch creep testing apparatus of claim 1, wherein: ​ 7. The small punch creep testing apparatus of claim 6, wherein: ​ 8. The small punch creep testing apparatus of claim 7, wherein: ​ 9. The small punch creep testing apparatus of claim 1, wherein: The small punch creep test device further comprises a support base, the second loading mechanism is installed on the support base, a guide column is arranged on the support base, and the containing assembly is slidingly installed on the guide column, and the guide column is parallel to the axial direction of the sample.

10. A small punch creep testing system characterized by: The small punch creep test device comprises a heating furnace and a small punch creep test device according to any one of claims 1-9, and the small punch creep test device is installed in the heating furnace.

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