Liquid metal testing device

Abstract

The embodiment of the invention relates to the field of fluid sealing, in particular to a liquid metal testing device which is used for testing the sealing performance of liquid metal and comprises a body and a separator. The body is arranged to form a containing groove which is used for containing liquid metal. The containing groove is divided into a first groove and a second groove by the partition part, the bottom of the first groove is communicated with the bottom of the second groove, an air cavity communicated with the first groove is formed between the partition part and the body, and an inflation channel communicated with the air cavity is further formed in the body and used for inflating test gas into the air cavity. The testing device further comprises a pressure measuring piece used for measuring the pressure of the air cavity so as to test the sealing performance of the liquid metal under the preset pressure. The test device provided by the embodiment of the invention can test the sealing performance of the liquid metal.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of sealing with fluids, and in particular to a liquid metal testing device. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The method of using liquid metal for sealing has the advantages of being not easy to age, resistant to high temperature and high pressure, and being able to perform both static and dynamic sealing. It is widely used in high temperature sealing, high pressure sealing, radioactive sealing and other fields.

[0004] The sealing performance of liquid metal is related to its sealing effect. In order to ensure that the liquid metal can be effectively sealed, it is necessary to test the sealing performance of the liquid metal. The test can be carried out with the aid of a device for testing the sealing performance. Therefore, it is necessary to provide a device that can test the sealing performance of liquid metal. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] In view of the above problems, an embodiment of the present application provides a liquid metal test device for testing the sealing performance of liquid metal. The test device provided in the embodiment of the present application includes a main body and a partition. The main body is configured to form a receiving groove, which is used to receive liquid metal; the partition separates the receiving groove into a first groove and a second groove, and the bottoms of the first groove and the second groove are connected, wherein an air cavity connected to the first groove is formed between the partition and the main body, and the main body also forms an air filling channel connected to the air cavity, which is used to fill the air cavity with test gas. The test device also includes a pressure measuring device for measuring the pressure of the air cavity to test the sealing performance of the liquid metal under a preset pressure.

[0007] The test device provided in the embodiment of the present application divides the containing tank containing the liquid metal into a first tank and a second tank connected to each other through a separator, and forms an air cavity connected to the first tank, and the sealing performance of the liquid metal can be tested by filling the air cavity with a test gas and measuring the pressure in the air cavity with a pressure measuring device. In addition, the embodiment of the present application can also adjust the pressure in the air cavity to facilitate testing the sealing performance of the liquid metal under different pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0009] Figure 1 It is a schematic diagram of the structure of the test device provided in the embodiment of the present application.

[0010] Figure 2 yes Figure 1 A schematic diagram of the structure of the main body of the test device is shown.

[0011] Figure 3 yes Figure 1 A schematic diagram of the structure of the test device after the separator, bearing and second gear are assembled is shown.

[0012] Figure 4 yes Figure 1 The schematic diagram of the structure of the test device shown is after the bracket, base, driving member and first gear are omitted.

[0013] Figure 5 yes Figure 1 A partial enlarged schematic diagram of the test device near the insulation component is shown.

[0014] Figure 6 yes Figure 1 A schematic diagram of the structure of the heating element of the test device in the heat preservation chamber is shown.

[0015] Figure 7 yes Figure 6 Schematic diagram of the cross-section of the structure at AA.

[0016] Description of reference numerals:

[0017] 100. Test equipment;

[0018] 10. body; 11. first ring member; 12. second ring member; 13. bottom plate; 131. air charging channel; 14. annular connecting member; 15. supporting member; 151. bearing mounting groove; 16. second heat preservation chamber;

[0019] 101, receiving groove; 1011, first groove; 1012, second groove; 1013, groove; 102, air cavity; 103, additional layer;

[0020] 20. separator; 21. separator ring; 22. cover; 201. bearing;

[0021] 30. driving member; 40. heat-insulating member; 41. heat-insulating cavity; 411. arc-shaped cavity section; 42. partition member; 43. first L-shaped mounting member; 44. second L-shaped mounting member; 45. first heat-insulating material; 46. second heat-insulating material; 461. abutting portion; 462. embedding portion; 47. L-shaped mounting cavity;

[0022] 50, heat conducting member; 51, measuring slot; 60, cover plate; 70, transmission assembly; 71, first gear; 72, second gear; 721, mounting hole;

[0023] 81, bracket; 82, base; 90, heating element; 91, heating section; 911, first heating section; 912, second heating section; 913, first connecting section; 914, second connecting section;

[0024] 1001, nut; 200, liquid metal; 210, anti-oxidation layer.

[0025] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0026] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0027] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0028] The embodiment of the present application provides a liquid metal testing device for testing the sealing performance of liquid metal. Figure 1 and Figure 2The test device 100 provided in the embodiment of the present application may include a body 10 and a separator 20. The body 10 is configured to form a receiving groove 101, and the receiving groove 101 is used to receive the liquid metal 200; the separator 20 separates the receiving groove 101 into a first groove 1011 and a second groove 1012, and the bottoms of the first groove 1011 and the second groove 1012 are connected, wherein an air cavity 102 connected to the first groove 1011 is formed between the separator 20 and the body 10, and the body 10 also forms an air filling channel 131 connected to the air cavity 102, which is used to fill the air cavity 102 with test gas. The test device 100 may also include a pressure measuring device for measuring the pressure of the air cavity 102 to test the sealing performance of the liquid metal 200 under a preset pressure.

[0029] The test device 100 provided in the embodiment of the present application divides the containing tank 101 containing the liquid metal 200 into a connected first tank 1011 and a second tank 1012 through a partition 20, and forms an air cavity 102 connected to the first tank 1011. The test gas is filled into the air cavity 102 through an inflation channel 131, and the pressure in the air cavity 102 is measured using a pressure measuring device, so that the sealing performance of the liquid metal can be tested.

[0030] In addition, the embodiment of the present application can also adjust the pressure in the air cavity 102 so as to test the sealing performance of the liquid metal 200 under different pressures.

[0031] See also Figure 2 In some embodiments, the receiving groove 101 formed by the body 10 may be open at the top. In some embodiments, the gas filling channel 131 may be connected to an external test gas source to fill the test gas into the gas cavity 102. The test gas source may be an inert gas bottle, such as a helium bottle, and accordingly, the test gas filled may be an inert gas, such as helium.

[0032] In some embodiments, the second groove 1012 may be in communication with external air.

[0033] In some embodiments, the pressure measuring device is, for example, a pressure gauge. In some embodiments, the pressure measuring device can also be used to measure the pressure of the air cavity 102 after the test is completed, and the sealing performance of the liquid metal 200 can be determined by comparing the pressure of the air cavity 102 after the test measured by the pressure measuring device with a preset pressure.

[0034] See also Figure 2In some embodiments, the test device 100 may further include an additional layer 103 disposed on the groove wall of the receiving groove 101 to prevent the existence of an air gap between the liquid metal 200 and the groove wall of the receiving groove 101. In such an embodiment, the additional layer 103 disposed on the groove wall of the receiving groove 101 enables the groove wall of the receiving groove 101 to have good wettability with the liquid metal 200, can increase the bonding between the groove wall and the liquid metal 200, prevents the test gas from leaking from the air gap between the liquid metal 200 and the groove wall, and is conducive to improving the accuracy of the test results of the sealing performance of the liquid metal 200.

[0035] See also Figure 2 In some embodiments, a groove 1013 may be formed where the bottom wall and the side wall of the containing tank 101 meet, and the bottom end of the additional layer 103 may be inserted into the groove 1013 to prevent the test gas in the liquid metal 200 from escaping along the side wall of the containing tank 101 in the form of bubbles.

[0036] In some embodiments, the liquid metal 200 may be a tin-bismuth alloy, and the additional layer 103 may be a nickel plate welded to the wall of the receiving groove 101. Since the tin-bismuth alloy and nickel have good wettability, it is helpful to prevent the existence of air gaps.

[0037] In some embodiments, by replacing the material of the additional layer 103 and making the material to be tested into the additional layer 103, the test device of the embodiment of the present application can also test the sealing performance between the liquid metal 200 and different materials.

[0038] See also Figure 5 In some embodiments, the test device 100 may further include an anti-oxidation layer 210, which is disposed in the containing tank 101 and located above the liquid metal 200 to prevent the liquid metal 200 from being oxidized. Since the temperature of the liquid metal is relatively high, it is easily oxidized after contacting the air. In such an embodiment, the anti-oxidation layer 210 located above the liquid metal 200 can separate the liquid metal from the external air, thereby preventing the liquid metal from being oxidized due to contact with the external air, thereby affecting the measurement results. The anti-oxidation layer 210 is, for example, benzyl silicone oil.

[0039] In some embodiments, the anti-oxidation layer 210 is disposed above the liquid metal 200 in the second tank 1012 .

[0040] See also Figure 1In some embodiments, the receiving groove 101 may be annular, and the separator 20 may separate the receiving groove 101 into a first groove 1011 located radially inward and a second groove 1012 located radially outward. In some embodiments, the test device 100 may further include a driving member 30, and the driving member 30 is configured to drive the separator 20 to rotate to test the dynamic sealing performance of the liquid metal 200. In such an embodiment, the actual working condition of the liquid metal 200 for dynamic sealing can be simulated by driving the separator 20 to rotate by the driving member 30, thereby facilitating the testing of the dynamic sealing performance of the liquid metal 200.

[0041] In some embodiments, the drive member 30 may include a motor. Figure 1 In some embodiments, the test device 100 may further include a transmission assembly 70, and the driving member 30 can drive the partition 20 to rotate through the transmission assembly 70. In some embodiments, the transmission assembly 70 includes a first gear 71 and a second gear 72, the first gear 71 is configured to be driven to rotate by a motor, the first gear 71 is meshed with the second gear 72, and the second gear 72 is configured to be connected to the partition 20 through a fastener. The fastener is, for example, a bolt. Figure 1 In some embodiments, the second gear 72 forms a plurality of mounting holes 721 for mounting fasteners.

[0042] Specifically, when the motor drives the first gear 71 to rotate, since the first gear 71 is meshed with the second gear 72, the second gear 72 can follow the transmission of the first gear 71, and then the partition 20 connected to the second gear 72 also rotates, so that the driving member 30 drives the partition 20 to rotate.

[0043] See also Figure 2 and Figure 4 In some embodiments, the body 10 may further include a support member 15 for supporting the partition 20. The support member 15 extends upward from the bottom wall of the air cavity 102.

[0044] See also Figure 3 and Figure 4 In some embodiments, the test device 100 may further include a bearing 201, the bearing 201 is sleeved on the support 15, and the separator 20 is connected to the support 15 through the bearing 201. In such an embodiment, the separator 20 can be connected to the support 15 and the separator 20 can be rotated. The bearing 201 is, for example, a ball bearing.

[0045] See also Figure 2 and Figure 4In some embodiments, the support member 15 is configured to form a bearing installation groove 151. When the bearing 201 is sleeved on the support member 15, the bottom of the bearing 201 can be set in the bearing installation groove 151. In some embodiments, a thread is formed on the top of the support member 15. When the bearing 201 is sleeved on the support member 15, the nut 1001 can be used to cooperate with the thread at the end of the support member 15 to press the bearing 201 and the bearing installation groove 151 tightly to prevent the bearing 201 from shaking up and down during the rotation of the separator 20.

[0046] During installation, the bearing 201 can be inserted into the support 15 first, and then the partition 20 can be inserted into the receiving groove 101. After that, the nut 1001 and the support 15 are tightened, and then the second gear 72 and the partition 20 (specifically the cover 22 of the partition 20) are connected through fasteners.

[0047] See also Figure 5 In some embodiments, the test device 100 may further include a heating element 90, which is disposed on the outside of the receiving tank 101 and is used to heat the liquid metal 200 in the receiving tank 101. In such an embodiment, during the dynamic sealing test, the liquid metal 200 in the receiving tank 101 is heated by the heating element 90, so that the liquid metal remains in a liquid state, so that the partition 20 can rotate relative to the body 10 to test the dynamic sealing performance of the liquid metal 200. The heating element 90 is, for example, an electric heater. Since the heating element 90 is disposed on the outside of the receiving tank 101 and does not contact the liquid metal, the heating element 90 is damaged.

[0048] In some embodiments, the liquid metal 200 in the receiving tank 101 is heated by the heating element 90 to keep the liquid metal in a liquid state, so as to test the static sealing performance of the liquid metal 200 in a stationary state.

[0049] In some embodiments, the heating element 90 may stop heating the liquid metal 200 to solidify the liquid metal 200 so as to test the static sealing performance of the liquid metal 200 after solidification.

[0050] In some embodiments, the temperature of the liquid metal 200 may be adjusted by adjusting the heating element 90 , so as to test the sealing performance of the liquid metal 200 at different temperatures.

[0051] See also Figure 1 and Figure 2 In some embodiments, the test device 100 may further include a heat preservation member 40 for heat preservation of the heating member 90. Since the heating member 90 is disposed outside the receiving tank 101, the heat of the heating member 90 is transferred to the liquid metal as well as a large amount of heat to the external environment. By providing the heat preservation member 40, the heat loss of the heating member 90 is reduced.

[0052] In some embodiments, the heat preservation member 40 forms a heat preservation chamber 41 radially outside the receiving groove 101, and the heating member 90 is disposed in the heat preservation chamber 41. In such an embodiment, disposing the heating member 90 in the heat preservation chamber 41 can reduce the heat loss of the heating member 90, which is beneficial for the heating member 90 to heat the liquid metal 200.

[0053] See also Figure 6 In some embodiments, the heat preservation cavity 41 is divided into a plurality of arc-shaped cavity segments 411 along the circumferential direction, and the heating element 90 may include a plurality of heating segments 91, each of which is disposed in one arc-shaped cavity segment 411. In such an embodiment, each heating segment 91 is disposed in one arc-shaped cavity segment 411, which is conducive to reducing the heat loss of the heating segment 91. When a single heating segment 91 is damaged, it is only necessary to disassemble the corresponding arc-shaped cavity segment 411, take out the heating segment 91 for replacement or repair, and the other heating segments 91 and arc-shaped cavity segments 411 can be kept in their original state.

[0054] In some embodiments, a plurality of heating segments 91 may be arranged in parallel. In such an embodiment, when one or more heating segments 91 are damaged, the remaining heating segments 91 can still work normally without affecting the heating effect on the liquid metal 200 .

[0055] In some embodiments, the heat preservation member 40 may further include a plurality of partitions 42 for separating the plurality of arc-shaped cavity segments 411 from each other. In some embodiments, two partitions 42 are provided between two adjacent arc-shaped cavity segments 411, and a heat preservation segment is formed between the two partitions 42, so as to facilitate heat insulation between the two adjacent arc-shaped cavity segments 411, thereby facilitating the temperature stability in each arc-shaped cavity segment 411, facilitating temperature adjustment, and when one arc-shaped cavity segment 411 is repaired, the heat preservation of another arc-shaped cavity segment 411 is not affected.

[0056] See also Figure 6 In some embodiments, each heating section 91 may include two first heating sections 911 extending from outside the arc-shaped cavity section 411 into the arc-shaped cavity section 411, two second heating sections 912 extending inside the arc-shaped cavity section 411 and located between the two first heating sections 911, two first connecting sections 913 respectively connecting the bottom end of a first heating section 911 and the bottom end of a second heating section 912, and a second connecting section 914 connecting the top ends of the two second heating sections 912, wherein the two first connecting sections 913 are in contact with the bottom wall of the arc-shaped cavity section 411. In such an embodiment, it is helpful to improve the heating effect of the heating section 91 on the liquid metal 200.

[0057] See also Figure 5 and Figure 7In some embodiments, the thermal insulation member 40 may include a first L-shaped mounting member 43, a second L-shaped mounting member 44, a first thermal insulation material 45, and a second thermal insulation material 46. The first L-shaped mounting member 43 and the second L-shaped mounting member 44 are connected to the body 10, and the first L-shaped mounting member 43 and the second L-shaped mounting member 44 together form an L-shaped mounting cavity 47; the first thermal insulation material 45 is filled in the L-shaped mounting cavity 47; the first L-shaped mounting member 43 and the body 10 form a thermal insulation cavity 41, and the top of the thermal insulation cavity 41 forms an opening; the second thermal insulation material 46 is used to close the opening of the thermal insulation cavity 41. In such an embodiment, the first thermal insulation material 45 and the second thermal insulation material 46 can cover the heating section 91 in the thermal insulation cavity 41 more comprehensively to obtain a better thermal insulation effect and reduce the heat loss of the heating section 91.

[0058] See also Figure 6 In some embodiments, the two second heating segments 912 , the two first connecting segments 913 , and the second connecting segment 914 are located below the second thermal insulation material 46 , and the two first heating segments 911 extend through the second thermal insulation material 46 to the outside of the arc-shaped cavity segment 411 .

[0059] In some embodiments, the first thermal insulation material 45 can be rock wool. When the rock wool is filled into the L-shaped installation cavity 47, the rock wool crushed into filaments or granules can be filled into the L-shaped installation cavity 47 and lightly compacted to ensure the compactness of the rock wool in the L-shaped installation cavity 47 to avoid affecting the thermal insulation effect and avoiding damage to the first L-shaped installation component 43 and the second L-shaped installation component 44.

[0060] In other embodiments, the first heat-insulating material 45 may also be granular cotton. In some embodiments, the second heat-insulating material 46 may be a heat-insulating material that can be processed into a fixed shape, so that the second heat-insulating material 46 is integrally formed into a cover to close the upper opening of the heat-insulating cavity 41 .

[0061] The cover may include an embedding portion 462 and an abutting portion 461 . The embedding portion 462 is embedded in the upper opening of the heat preservation cavity 41 . The abutting portion 461 abuts against the first L-shaped mounting member 43 and the first heat preservation material 45 to position the cover.

[0062] In some embodiments, the second heat-insulating material 46 may be solid calcium silicate. Solid calcium silicate generally has good high temperature resistance and is easy to shape.

[0063] In some embodiments, the test device 100 may further include a gas concentration detection element for detecting the concentration of the test gas leaked from the second tank 1012. In such an embodiment, it is possible to determine whether the sealing of the liquid metal 200 fails by the concentration of the test gas detected by the gas concentration detection element, so as to determine the sealing performance of the liquid metal 200.

[0064] The gas concentration detection element may be disposed above the liquid level of the second tank 1012 , for example, above the anti-oxidation layer.

[0065] In some embodiments, an instrument capable of measuring the concentration of the test gas may be selected as a gas concentration measuring device according to the type of the test gas. For example, when the test gas is helium, the gas concentration measuring device may be a helium detector.

[0066] In some embodiments, the gas concentration detection element may not be provided, but the bubbles escaping from the liquid surface may be directly observed to determine the sealing performance.

[0067] In some embodiments, the test device 100 may further include a camera for acquiring an image including the liquid surface of the second tank 1012 , so as to determine the sealing performance according to the distribution of bubbles in the image.

[0068] See also Figure 2 and Figure 4 In some embodiments, the body 10 may further include a bottom plate 13, a first ring member 11, a second ring member 12, and an annular connector 14. The first ring member 11 is connected to the bottom plate 13; the second ring member 12 is arranged on the radially outer side of the first ring member 11; the annular connector 14 is used to connect the first ring member 11 and the second ring member 12, so as to form a receiving groove 101 together with the second ring member 12 and the first ring member 11. In such an embodiment, through the above arrangement, the first ring member 11, the second ring member 12, and the annular connector 14 can form the receiving groove 101 together, and the first ring member 11 and the separator 20 can form the air cavity 102 together, and the air cavity 102 is connected to the receiving groove 101, so as to facilitate the sealing performance test of the liquid metal 200 under different pressures.

[0069] In some embodiments, the heat preservation cavity 41 may be an annular cavity, and the heat preservation member 40 and the second ring member 12 together form the heat preservation cavity 41. Figure 2 In some embodiments, the support member 15 is disposed on the bottom plate 13 , and the inflation channel 131 is formed on the bottom plate 13 .

[0070] In some embodiments, the bottom end of the first ring member 11 is flush with the annular connector 14 , and the bottom end of the second ring member 12 is lower than the annular connector 14 .

[0071] The test device 100 may further include a second heat preservation chamber 16 and a second heat preservation member disposed in the second heat preservation chamber 16 for heat preservation of the air cavity 102 during the test. The material of the second heat preservation member may be the same as the first heat preservation material 45 .

[0072] The top end of the second heat-insulating chamber 16 is connected to the lower surface of the annular connector 14, and the bottom end extends downward along the second ring member 12 to the radial outer surface of the bottom plate 13, and the inflation channel 131 passes through the second heat-insulating chamber 16. In such an embodiment, the second heat-insulating chamber 16 and the second heat-insulating member can insulate the lower part of the annular connector 14 and the first ring member 11.

[0073] See also Figure 3 and Figure 4 In some embodiments, the separator 20 may include a separator ring 21 and a cover 22 connected to the separator ring 21. The separator ring 21 is used to be inserted into the receiving groove 101. The cover 22, the separator ring 21 and the first ring 11 together form an air cavity 102. In such an embodiment, by inserting the separator ring 21 into the receiving groove 101, the receiving groove 101 can be separated into a first groove 1011 and a second groove 1012 that are connected at the bottom; the cover 22, the separator ring 21 and the first ring 11 together form the air cavity 102, which can make the air cavity 102 communicate with the first groove 1011, so as to facilitate the testing of the sealing performance of the liquid metal 200 under different pressures.

[0074] In some embodiments, when the separating ring 21 is inserted into the receiving groove 101, there is a certain distance between the separating ring 21 and the bottom wall of the receiving groove 101, so that the first groove 1011 and the second groove 1012 can communicate. In some embodiments, the driving member 30 can drive the separating ring 21 to rotate.

[0075] In some embodiments, the material of the separation ring 21 may be nickel, the material of the cover 22 may be stainless steel, and the separation ring 21 and the cover 22 are connected by welding. In such an embodiment, the separation ring 21 made of nickel has good wettability with the liquid metal 200, which can increase the combination of the separation ring 21 and the liquid metal 200, avoid the generation of gaps, and prevent the test gas from leaking from the gap between the liquid metal 200 and the separation ring 21.

[0076] See also Figure 1 and Figure 2 In some embodiments, the test device 100 may further include a temperature measuring member and a heat conducting member 50, which may be disposed in the heat preservation chamber 41, the heat conducting member 50 being in thermal contact with the second ring member 12, the heat conducting member 50 being configured to form a measuring groove 51, and the temperature measuring member being disposed in the measuring groove 51 to measure the temperature of the second ring member 12. The temperature measuring member is, for example, a thermocouple.

[0077] join Figure 1 and Figure 4In some embodiments, the test device 100 may further include a cover plate 60, which is connected to the cover member 22 and is used to cover the receiving tank 101 to keep it warm. In some embodiments, the cover plate 60 may have an observation window for observing the escape of bubbles in the second tank 1012.

[0078] See also Figure 1 In some embodiments, the test device 100 may further include a base 82 and a bracket 81 , the body 10 and the bracket 81 are both disposed on the base 82 , and the driving member 30 and the first gear 71 are disposed on the bracket 81 .

[0079] In some embodiments, the test device 100 may also include a control system, which can be used to set a preset temperature of the liquid metal 200, set the pressure by adjusting the pressure charging valve, use temperature measuring components and pressure measuring components to measure the temperature of the liquid metal 200 and the pressure in the air cavity 102, respectively, and control the heating component 90, the valve of the inflation channel 131, etc., so that the temperature and pressure of the liquid metal 200 reach preset values, thereby simulating different working conditions during the use of the liquid metal 200.

[0080] The following describes a process of testing the sealing performance of the tin-bismuth alloy 200 using the testing device 100 provided in the embodiment of the present application.

[0081] First, the tin-bismuth alloy 200 is added to the containing tank 101, and the preset temperature of the tin-bismuth alloy 200 is set by the control system, and the pressure is set by adjusting the pressure charging valve; then, the heating element 90 is started to heat the tin-bismuth alloy 200, and air is charged into the air cavity 102 through the inflation channel 131, and the pressure in the air cavity 102 and the temperature of the tin-bismuth alloy 200 are monitored in real time by a pressure gauge and a thermocouple until the tin-bismuth alloy 200 reaches the preset pressure and the preset temperature.

[0082] Afterwards, the static sealing performance of the tin-bismuth alloy 200 is tested. During the test, a pressure gauge and a thermocouple are used to monitor the pressure in the air cavity 102 and the temperature of the tin-bismuth alloy 200 in real time.

[0083] After completing the static sealing performance test of the tin-bismuth alloy 200, the motor is started to drive the separation ring 21 to rotate, and the dynamic sealing performance test of the tin-bismuth alloy 200 is performed. The pressure in the air cavity 102 and the temperature of the tin-bismuth alloy 200 are monitored in real time using a pressure gauge and a thermocouple.

[0084] After the dynamic sealing performance test of the tin-bismuth alloy 200 is completed, the heating of the tin-bismuth alloy 200 is stopped to allow the tin-bismuth alloy 200 to slowly solidify. When the tin-bismuth alloy 200 in the first groove 1011 is completely solidified, the static sealing performance test of the tin-bismuth alloy 200 in the solidified state is started, and the pressure in the air cavity 102 is monitored in real time using a pressure gauge and a thermocouple. After the static sealing performance test of the tin-bismuth alloy 200 in the solidified state is completed, the pressure data recorded by the pressure gauge is compared with the preset pressure to determine the sealing performance of the tin-bismuth alloy 200.

[0085] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0086] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A liquid metal testing device for testing the sealing performance of liquid metal, characterized in that: The test device comprises: A body, the body being configured to form a receiving tank, the receiving tank being used to receive the liquid metal; a separator, wherein the separator separates the receiving groove into a first groove and a second groove, and the bottoms of the first groove and the second groove are connected, Wherein, an air cavity communicating with the first groove is formed between the partition and the body, and the body further forms an air filling channel communicating with the air cavity for filling the air cavity with test gas; The test device also includes a pressure measuring component for measuring the pressure of the air cavity to test the sealing performance of the liquid metal under a preset pressure.

2. The test device according to claim 1, characterized in that: Also includes: The additional layer is arranged on the groove wall of the containing groove to prevent the existence of an air gap between the liquid metal and the groove wall of the containing groove.

3. The test device according to claim 2, characterized in that: The liquid metal is a tin-bismuth alloy, and the additional layer is a nickel plate welded to the wall of the containing tank.

4. The test device according to claim 1, characterized in that: The receiving groove is annular, and the separator divides the receiving groove into a first groove located radially inward and a second groove located radially outward; The test device also includes: The driving member is configured to drive the partition member to rotate so as to test the dynamic sealing performance of the liquid metal.

5. The test device according to claim 4, characterized in that: The body also includes a support member; The test device further comprises: a bearing, wherein the bearing is sleeved on the support member; The partition is connected to the support member through the bearing.

6. The test device according to claim 1, characterized in that: Also includes: A heating element is arranged on the outside of the containing tank and is used to heat the liquid metal in the containing tank.

7. The test device according to claim 6, characterized in that Also includes: A heat-insulating element, used for keeping the heating element warm; The heat-insulating element forms a heat-insulating cavity on the radial outer side of the containing groove, and the heating element is arranged in the heat-insulating cavity.

8. The test device according to claim 1, characterized in that: Also includes: The gas concentration detection member is used to detect the concentration of the test gas leaked from the second tank.

9. The test device according to claim 1, characterized in that: The body comprises: a bottom plate; A first ring member connected to the bottom plate; A second ring member, disposed radially outside the first ring member; An annular connecting member is used to connect the first ring member and the second ring member to form the accommodating groove together with the second ring member and the first ring member.

10. The test device according to claim 9, characterized in that The separator comprises a separator ring and a cover connected to the separator ring. The separator ring is used to be inserted into the receiving groove. The cover, the separator ring and the first ring together form the air cavity.

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