A device and experimental method for metal gasket compression creep experiment

Abstract

The present invention discloses a device for a metal gasket compression creep experiment and an experimental method thereof, relating to the technical field of experimental devices, comprising an upper support, a lower support and a plurality of support columns, wherein the support columns are arranged between the upper support and the lower support, the upper support is provided with an extrusion block, the lower support is provided with a compression chamber, an air transmission chamber is provided inside the lower support, and the extrusion block is slidably connected to the support columns; the metal gasket is placed in the compression chamber, and then the air transmission chamber transmits air to the compression chamber, and impurities on the surface of the metal gasket fall off under the action of the air, thereby improving the cleanliness of the metal gasket surface, and using heat to dry the compression chamber, the extrusion block moves along the support column, the extrusion block moves to the side close to the compression chamber, and then the extrusion block contacts the metal gasket to perform a creep experiment, thereby improving the accuracy of metal gasket experiments under different environments.

Description

Technical Field

[0001] The invention relates to the technical field of experimental devices, in particular to a device for metal gasket compression creep experiment and an experimental method thereof. Background Art

[0002] Metal gaskets are widely used in mechanical seals, pipeline connections, pressure vessels and other fields. Especially under high temperature and high pressure conditions, when metal gaskets are subjected to compressive loads, they will undergo plastic deformation and even creep, affecting their sealing performance and service life. Therefore, studying the compression creep performance of metal gaskets is of great significance to improving their application reliability.

[0003] Currently, most conventional metal gasket compression test devices are designed for static or dynamic loading in an air environment. If the test purpose is to simulate the performance of metal gaskets in an air environment (for example, for sealing air pipes, valves, etc.), the existing experimental devices are unable to perform metal gasket performance tests in the above environment, which results in the experimental data measured in the air environment being unable to be applied in the air environment, and the application performance of metal gaskets in the air environment cannot be supported by data. Summary of the Invention

[0004] The purpose of the present invention is to provide a device and an experimental method for a metal gasket compression creep experiment, so as to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for metal gasket compression creep test, comprising an upper support, a lower support and several support columns, wherein the several support columns are arranged between the upper support and the lower support, the upper support is provided with an extrusion block, the lower support is provided with a compression chamber, an air transmission chamber is provided inside the lower support, the air transmission chamber is connected to the compression chamber through a pipeline, and the extrusion block is slidably connected to the support columns.

[0007] The metal gasket is placed in the compression chamber, and then the air supply chamber supplies air to the compression chamber. The impurities on the surface of the metal gasket fall off under the action of the air, thereby improving the cleanliness of the metal gasket surface. Heat is used to dry the compression chamber, and the environment in the compression chamber is controlled within a reasonable range of the experimental environment. The extrusion block moves along the support column and moves to the side close to the compression chamber. Then the extrusion block contacts the metal gasket to perform a creep experiment, which improves the accuracy of the metal gasket experiment under different environments.

[0008] Preferably, a support frame is provided on one side of the extrusion block close to the support column, a drive motor is provided in the support frame, a transmission wheel is provided on the drive shaft of the drive motor, and the support frame is slidably connected to the support column through the transmission wheel.

[0009] Preferably, a movable groove is provided in the extrusion block, a compression block is provided in the movable groove, a plurality of power grooves are provided on the compression block, a rotating gear is provided in the power groove, a rotating motor is also provided in the power groove, the driving shaft of the rotating motor is connected to the rotating gear, a plurality of tooth grooves are provided on the side of the movable groove close to the compression block, the rotating gear is engaged with the tooth groove for transmission, and the rotating gear corresponds to the tooth groove one to one.

[0010] Preferably, a fixing groove is provided in the middle of the compression block, and a fixing column is provided on one side of the fixing groove close to the axis of the compression block.

[0011] Preferably, a rotating impeller is provided in the air delivery cavity, a magnet is provided inside the rotating impeller, an electromagnetic coil is provided inside the air delivery cavity, and the rotating impeller is rotatably connected to the air delivery cavity.

[0012] Preferably, a placement platform is provided at the bottom of the compression chamber, a center column is provided on the top of the placement platform, an empty slot is provided inside the center column, a telescopic chamber is provided at the bottom of the lower support, a blocking body is provided in the telescopic chamber, and a plurality of springs are provided on the side of the blocking body away from the compression chamber, and the blocking body is slidably connected to the telescopic chamber.

[0013] Preferably, the blocking body is composed of a central block and a plurality of blocking bars, and the plurality of blocking bars are arranged around one side of the central block. The air delivery cavity is provided with a plurality of flow grooves on the side close to the telescopic cavity, the central column is provided with an arc groove on the side close to the placement table, and the flow groove is provided with a plurality of bottom spray grooves on the side close to the arc groove. The bottom of the compression cavity is provided with a plurality of blocking grooves, the central block is slidably connected to the empty groove, the blocking bar is slidably connected to the blocking groove, and a connecting groove is provided on the blocking bar, and the connecting groove connects the two sections of the flow groove.

[0014] Preferably, an airbag is provided on the top of the compression chamber, and the airbag is in an inverted U shape. A plurality of air pipes are provided on the side of the airbag close to the outer wall of the compression chamber, and the air pipes connect the airbag and the air chamber.

[0015] Preferably, the movable groove and the compression block are connected in a sliding and sealed manner, the compression chamber and the extrusion block are both provided with a heat-insulating layer, the compression chamber is provided with a resistance heater, and the placement table is provided with a displacement sensor.

[0016] An experimental method for a device used for compression creep testing of metal gaskets,

[0017] The experimental method comprises the following specific steps:

[0018] S1. Place the metal gasket in the compression chamber;

[0019] S2, the extrusion block moves toward the compression chamber;

[0020] S3, transport air into the compression chamber

[0021] S4, air cleans the metal gasket and dries the compression chamber;

[0022] S5. The extrusion block and the compression chamber cooperate with each other to perform creep experiments on the metal gasket.

[0023] Before the metal gasket is placed in the compression chamber, the top of the extrusion block contacts the upper support, and the extrusion block and the compression chamber are in a separated state. Then the metal gasket is placed on the center column, and the metal gasket falls to the surface of the placement table, so that the metal gasket is sleeved on the outside of the center column, that is, the center column restricts the metal gasket. Then the controller controls the drive motor to start, and the drive shaft of the drive motor drives the transmission wheel to rotate. The support frame drives the extrusion block to move under the action of the transmission wheel, and the extrusion block moves along the support column to the side close to the compression chamber;

[0024] When the extrusion block moves, it encounters the airbag. When the extrusion block moves, it squeezes the airbag, which is then subjected to the pressure of the extrusion block, thereby increasing the pressure in the airbag. The air in the airbag is then transported to the air delivery chamber through the air delivery pipe. At this time, the controller controls the electromagnetic coil of the air delivery chamber to start. When the electromagnetic coil is energized, it generates a magnetic force. The magnetic force attracts the magnetic conductor in the rotating impeller, thereby causing the rotating impeller to rotate around the axis of the air delivery chamber. When the rotating impeller rotates, the gas in the air delivery chamber is pressurized. At this time, the blocking strip is located in the blocking groove, causing the connecting groove and the two sections of the flow groove to be misaligned, thereby forming a closed space in the air delivery chamber. As the air in the airbag is continuously input into the air delivery chamber, the pressure in the air delivery chamber gradually increases. As the pressure increases, the temperature of the gas also rises. Then, the controller controls the electromagnetic spring at the bottom of the blocking block to energize. The electromagnetic spring is energized and contracts, causing the blocking block to drive the blocking strip downward, thereby connecting the two sections of the flow groove. Then, the gas in the air delivery chamber immediately flows to the side closer to the flow groove, and then flows to the side closer to the arc groove through the flow groove.

[0025] During the flow process, part of the gas flows to the bottom spray slot, causing the gas to blow to the bottom of the gasket, and then the gasket is lifted by the airflow, while more gas moves along the arc slot, and then the airflow flows above the gasket, resulting in a smaller pressure above the gasket, making the gasket in a state of near "floating" under the restriction of the central column. In the process of airflow, dust and impurities on the surface of the gasket are blown off, making the gasket surface clean and dry, thereby improving the cleanliness of the metal gasket surface;

[0026] When the extrusion block moves to the maximum stroke, the airbag is squeezed into a thin sheet under the action of the extrusion block and the side wall of the compression chamber. At this time, the airbag acts as a sealing gasket between the extrusion block and the compression chamber, making the compression chamber a closed space, providing a reasonable experimental environment for the creep experiment of the metal gasket; when the gas in the gas delivery chamber is completed, the force of the airflow on the gasket decreases, and the gasket will fall back onto the surface of the placement table;

[0027] During the cleaning process, as the air flows in the air delivery cavity, it is affected by the heat generated by the electromagnetic coil and the continuous input of air, causing the gas in the air delivery cavity to be in a high-temperature and high-pressure state. Then, after the gas is transported from the flow groove to the compression cavity, the compression cavity is preheated. At the same time, after the gasket is cleaned, the controller first controls the electromagnetic spring to cut off the power, and then the electromagnetic spring drives the blocking block to reset, and then the blocking strip returns to the blocking groove again, so that the connecting groove is separated from the flow groove, and the air in the compression cavity cannot be transported outward;

[0028] When the blocking block is reset, the controller controls the compression block to move downward and the resistance heater to start, so that the resistance heater heats the compression chamber. At the same time, during the downward movement of the compression block, the compression block continuously squeezes the space in the compression chamber, so that the volume of the space in the compression chamber is reduced, thereby continuously compressing the air activity space in the compression chamber, causing the pressure in the compression chamber to gradually rise. As the pressure continues to rise, the temperature in the compression chamber also rises, thereby allowing the temperature in the compression chamber to reach the temperature set for the experiment more quickly, thereby shortening the heating time using the resistance heater, reducing the energy consumed by the resistance heater, and further improving the efficiency of the experiment.

[0029] During the movement of the compression block, the central column extends into the fixed slot, while the fixed column extends into the empty slot. Then, the compression block cooperates with the placement table and the central column to perform a compression creep test on the metal gasket. During the experiment, the displacement sensor on the surface of the placement table detects the deformation distance of the metal gasket, converts the deformation distance into an electrical signal and transmits it to the controller, which analyzes it to obtain the results of the metal gasket creep test.

[0030] When the experiment is over, the controller controls the compression block and the extrusion block to reset, the compression block moves into the moving groove, the extrusion block is separated from the compression chamber, and finally the metal gasket is taken out from the compression chamber.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] During the downward movement of the compression block, the compression block continuously squeezes the space in the compression chamber, reducing the volume of the space in the compression chamber, and then the air activity space in the compression chamber is continuously compressed, causing the pressure in the compression chamber to gradually rise. As the pressure continues to rise, the temperature in the compression chamber also rises, so that the temperature in the compression chamber can reach the temperature set by the experiment more quickly, thereby shortening the heating time using the resistance heater, reducing the energy consumed by the resistance heater, further improving the efficiency of the experiment, and thus improving the accuracy of the metal gasket experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A perspective view of the present invention;

[0034] Figure 2 It is a front view of the present invention;

[0035] Figure 3 This is a schematic structural diagram of the present invention when it is not working;

[0036] Figure 4 It is a front view of the present invention when it is not working;

[0037] Figure 5 This is a schematic diagram of the structure of the present invention when it is in operation;

[0038] Figure 6 Schematic diagram of the internal structure of the extrusion block;

[0039] Figure 7 Schematic diagram of the internal structure of the compression chamber;

[0040] Figure 8 for Figure 5 Enlarged view of point A in the middle;

[0041] In the figure: 1, upper support; 11, support column;

[0042] 2. Lower support; 21. Liquid storage chamber; 211. Flow trough; 22. Telescopic chamber; 23. Blocking body; 231. Center block; 232. Blocking strip; 233. Connecting trough;

[0043] 3. Extrusion block; 31. Support frame; 32. Moving slot; 321. Tooth groove; 33. Compression block; 331. Power slot; 332. Rotating gear; 34. Fixed slot; 35. Fixed column; 351. Contraction chamber; 36. Push block;

[0044] 4. Compression chamber; 401. Arc-shaped slot; 402. Bottom spray slot; 403. Blocking slot; 41. Placement table; 42. Rotating impeller; 43. Center column; 431. Empty slot; 44. Air bag; 45. Air pipe. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] Example: Figures 1-8 As shown, the present invention provides a device for metal gasket compression creep test, including an upper support 1, a lower support 2 and a plurality of support columns 11, wherein the plurality of support columns 11 are arranged between the upper support 1 and the lower support 2, the upper support 1 is provided with an extrusion block 3, the lower support 2 is provided with a compression chamber 4, the interior of the lower support 2 is provided with an air transmission chamber 21, the air transmission chamber 21 is connected to the compression chamber 4 through a pipeline, and the extrusion block 3 is slidably connected to the support column 11.

[0047] As a specific embodiment of the present invention, a support frame 31 is provided on the side of the extrusion block 3 close to the support column 11, a drive motor is provided in the support frame 31, a transmission wheel is provided on the drive shaft of the drive motor, and the support frame 31 is slidably connected to the support column 11 through the transmission wheel.

[0048] As a specific embodiment of the present invention, a moving groove 32 is provided in the extrusion block 3, a compression block 33 is provided in the moving groove 32, a plurality of power grooves 331 are provided on the compression block 33, a rotating gear 332 is provided in the power groove 331, a rotating motor is also provided in the power groove 331, and the driving shaft of the rotating motor is connected to the rotating gear 332. A plurality of tooth grooves 321 are provided on the side of the moving groove 32 close to the compression block 33, the rotating gear 332 is engaged with the tooth groove 321 for transmission, and the rotating gear 332 corresponds one to one with the tooth groove 321.

[0049] As a specific embodiment of the present invention, a fixing groove 34 is provided in the middle of the compression block 33 , and a fixing column 35 is provided on one side of the fixing groove 34 close to the axis of the compression block 33 .

[0050] As a specific embodiment of the present invention, a rotating impeller 42 is provided in the air delivery cavity 21 , a magnet is provided inside the rotating impeller 42 , an electromagnetic coil is provided inside the air delivery cavity 21 , and the rotating impeller 42 is rotatably connected to the air delivery cavity 21 .

[0051] As a specific embodiment of the present invention, a placement platform 41 is provided at the bottom of the compression chamber 4, a center column 43 is provided on the top of the placement platform 41, a slot 431 is provided inside the center column 43, a telescopic chamber 22 is provided at the bottom of the lower support 2, a blocking body 23 is provided in the telescopic chamber 22, and a plurality of springs are provided on the side of the blocking body 23 away from the compression chamber 4, and the blocking body 23 is slidably connected to the telescopic chamber 22.

[0052] As a specific embodiment of the present invention, the blocking body 23 is composed of a central block 231 and a plurality of blocking bars 232, and the plurality of blocking bars 232 are arranged around one side of the central block 231. The air delivery chamber 21 is provided with a plurality of flow grooves 211 on the side close to the telescopic chamber 22, the central column 43 is provided with an arc groove 401 on the side close to the placement table 41, and the flow groove 211 is provided with a plurality of bottom spray grooves 402 on the side close to the arc groove 401. The bottom of the compression chamber 4 is provided with a plurality of blocking grooves 403, the central block 231 is slidably connected to the empty groove 431, the blocking bar 232 is slidably connected to the blocking groove 403, and a connecting groove 233 is provided on the blocking bar 232, and the connecting groove 233 connects the two sections of the flow groove 211.

[0053] As a specific embodiment of the present invention, an airbag 44 is provided on the top of the compression chamber 4, and the airbag 44 is in an inverted U shape. Several air pipes 45 are provided on the side of the airbag 44 close to the outer wall of the compression chamber 4, and the air pipes 45 connect the airbag 44 and the air chamber 21.

[0054] As a specific embodiment of the present invention, the movable groove 32 and the compression block 33 are slidingly sealed and connected, the compression chamber 4 and the extrusion block 3 are both provided with an insulation layer, the compression chamber 4 is provided with a resistance heater, and the placement table 41 is provided with a displacement sensor.

[0055] An experimental method for a device used for compression creep testing of metal gaskets,

[0056] The experimental method comprises the following specific steps:

[0057] S1. Place the metal gasket in the compression chamber 4;

[0058] S2, the extrusion block 3 moves toward the compression chamber 4;

[0059] S3, transporting air into the compression chamber 4

[0060] S4, air cleans the metal gasket and dries the compression chamber 4;

[0061] S5, the extrusion block 3 and the compression chamber 4 cooperate with each other to perform a creep test on the metal gasket.

[0062] Working principle of the present invention:

[0063] Before the metal gasket is placed in the compression chamber 4, the top of the extrusion block 3 contacts the upper support 1, and the extrusion block 3 and the compression chamber 4 are in a separated state. Then the metal gasket is placed on the central column 43, and the metal gasket falls to the surface of the placement table 41, so that the metal gasket is sleeved on the outside of the central column 43, that is, the central column 43 restricts the metal gasket. Then the controller controls the drive motor to start, and the drive shaft of the drive motor drives the transmission wheel to rotate. The support frame 31 drives the extrusion block 3 to move under the action of the transmission wheel, and the extrusion block 3 moves along the support column 11 to the side close to the compression chamber 4;

[0064] When the squeezing block 3 moves, it encounters the airbag 44. When the squeezing block 3 moves, it squeezes the airbag 44. The airbag 44 is then subjected to the pressure of the squeezing block 3, and the pressure in the airbag 44 rises. The air in the airbag 44 is then transported to the air delivery cavity 21 through the air delivery pipe 45. At this time, the controller controls the electromagnetic coil of the air delivery cavity 21 to start. When the electromagnetic coil is energized, it generates magnetic force, which attracts the magnetic conductor in the rotating impeller 42, thereby causing the rotating impeller 42 to rotate around the axis of the air delivery cavity 21. When the rotating impeller 42 rotates, the gas in the air delivery cavity 21 is pressurized. At this time, the blocking strip 232 is located in the blocking groove 403, so that the connecting groove 23 3 is misaligned with the two sections of the flow grooves 211, and the air delivery cavity 21 is in a closed space. As the air in the airbag 44 is continuously input into the air delivery cavity 21, the pressure in the air delivery cavity 21 gradually increases. As the pressure increases, the temperature of the gas also rises. Then, the controller controls the electromagnetic spring at the bottom of the blocking block 23 to energize, and the electromagnetic spring contracts after being energized, so that the blocking block 23 drives the blocking bar 232 to move downward, and the connecting groove 233 connects the two sections of the flow grooves 211. Then, the gas in the air delivery cavity 21 immediately flows to the side close to the flow groove 211, and then flows through the flow groove 211 to the side close to the arc groove 402.

[0065] During the flow process, part of the gas flows toward the bottom spray slot 402, causing the gas to blow toward the bottom of the gasket, thereby lifting the gasket under the action of the airflow, while more gas moves along the arc-shaped slot 401, and the airflow flows above the gasket, resulting in a lower pressure above the gasket, so that the gasket is in a state of near "floating" under the restriction of the central column 43. During the flow of the airflow, dust and impurities on the surface of the gasket are blown off, making the gasket surface clean and dry, thereby improving the cleanliness of the metal gasket surface;

[0066] When the extrusion block 3 moves to the maximum stroke, the airbag 44 is squeezed into a thin sheet under the action of the extrusion block 3 and the side wall of the compression chamber 4. At this time, the airbag 44 acts as a sealing gasket between the extrusion block 3 and the compression chamber 4, making the compression chamber 4 a closed space, providing a reasonable experimental environment for the creep experiment of the metal gasket; when the gas delivery in the gas delivery chamber 21 is completed, the force of the air flow on the gasket decreases, and the gasket will fall back onto the surface of the placement table 41;

[0067] During the cleaning process, as the air flows in the air delivery chamber 21, it is affected by the heat generated by the electromagnetic coil and the continuous input of air, causing the gas in the air delivery chamber 21 to be in a high-temperature and high-pressure state. Therefore, after the gas is delivered to the compression chamber 4 through the flow groove 211, the compression chamber 4 is preheated. At the same time, after the gasket is cleaned, the controller first controls the electromagnetic spring to de-energize, and then the electromagnetic spring drives the blocking block 23 to reset, and then the blocking bar 232 returns to the blocking groove 403 again, so that the connecting groove 233 is separated from the flow groove 211, and the air in the compression chamber 4 cannot be delivered outward.

[0068] When the blocking block 23 is reset, the controller controls the compression block 33 to move downward and the resistance heater to start, so that the resistance heater heats the compression chamber 4. At the same time, during the downward movement of the compression block 33, the compression block 33 continuously squeezes the space in the compression chamber 4, so that the volume of the space in the compression chamber 4 is reduced, thereby causing the air activity space in the compression chamber 4 to be continuously compressed, so that the pressure in the compression chamber 4 gradually rises. As the pressure continues to rise, the temperature in the compression chamber 4 also rises, so that the temperature in the compression chamber 4 can reach the temperature set for the experiment more quickly, thereby shortening the heating time using the resistance heater, reducing the energy consumed by the resistance heater, and further improving the efficiency of the experiment.

[0069] During the movement of the compression block 33, the central column 43 extends into the fixed groove 34, and the fixed column 35 extends into the empty groove 431. Then, the compression block 33 cooperates with the placement platform 41 and the central column 43 to perform a compression creep test on the metal gasket. During the experiment, the displacement sensor on the surface of the placement platform 41 detects the deformation distance of the metal gasket, converts the deformation distance into an electrical signal, and transmits it to the controller, which analyzes it to obtain the results of the metal gasket creep test.

[0070] When the experiment is over, the controller controls the compression block 33 and the extrusion block 3 to reset, the compression block 33 moves into the moving groove 32, the extrusion block 3 is separated from the compression chamber 4, and finally the metal gasket is taken out from the compression chamber 4.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A device for metal gasket compression creep test, characterized by: The invention comprises an upper support (1), a lower support (2) and a plurality of support columns (11), wherein the plurality of support columns (11) are arranged between the upper support (1) and the lower support (2), an extrusion block (3) is arranged on the upper support (1), a compression chamber (4) is arranged on the lower support (2), an air delivery chamber (21) is arranged inside the lower support (2), the air delivery chamber (21) is connected to the compression chamber (4) through a pipeline, and the extrusion block (3) is slidably connected to the support columns (11); A resistance heater is provided in the compression chamber (4), an air bag (44) is provided on the top of the compression chamber (4), the air bag (44) is in an inverted U shape, and a plurality of air delivery pipes (45) are provided on one side of the air bag (44) close to the outer wall of the compression chamber (4), and the air delivery pipes (45) connect the air bag (44) and the air delivery chamber (21); When the squeezing block (3) moves, it encounters the airbag (44). When the squeezing block (3) moves, it squeezes the airbag (44). The airbag (44) is then subjected to the pressure of the squeezing block (3), and the pressure in the airbag (44) rises. The air in the airbag (44) is then transported to the air delivery cavity (21) through the air delivery tube (45). When the extrusion block (3) moves to the maximum stroke, the airbag (44) is squeezed into a thin sheet under the action of the extrusion block (3) and the side wall of the compression chamber (4). At this time, the airbag (44) acts as a sealing gasket between the extrusion block (3) and the compression chamber (4), making the compression chamber (4) a closed space; A moving groove (32) is provided in the extrusion block (3), and a compression block (33) is provided in the moving groove (32). When the compression block (33) moves downward, the pressure in the compression chamber (4) gradually rises. As the pressure continues to rise, the temperature in the compression chamber (4) also rises.

2. The device for metal gasket compression creep test according to claim 1, characterized in that: A support frame (31) is provided on one side of the extrusion block (3) close to the support column (11), a drive motor is provided in the support frame (31), a transmission wheel is provided on the drive shaft of the drive motor, and the support frame (31) is slidably connected to the support column (11) via the transmission wheel.

3. The device for metal gasket compression creep test according to claim 1, characterized in that: The compression block (33) is provided with a plurality of power slots (331), a rotating gear (332) is provided in the power slot (331), a rotating motor is also provided in the power slot (331), a driving shaft of the rotating motor is connected to the rotating gear (332), a plurality of tooth slots (321) are provided on a side of the movable slot (32) close to the compression block (33), the rotating gear (332) is meshed with the tooth slot (321) for transmission, and the rotating gear (332) corresponds to the tooth slot (321) one by one.

4. The device for metal gasket compression creep test according to claim 3, characterized in that: A fixing groove (34) is provided in the middle of the compression block (33), and a fixing column (35) is provided on one side of the fixing groove (34) close to the axis of the compression block (33).

5. The device for metal gasket compression creep test according to claim 3, characterized in that: A rotating impeller (42) is provided in the air delivery cavity (21), a magnet is provided inside the rotating impeller (42), an electromagnetic coil is provided inside the air delivery cavity (21), and the rotating impeller (42) is rotatably connected to the air delivery cavity (21).

6. The device for metal gasket compression creep test according to claim 5, characterized in that: A placement platform (41) is provided at the bottom of the compression chamber (4), a center column (43) is provided at the top of the placement platform (41), a slot (431) is provided inside the center column (43), a telescopic chamber (22) is provided at the bottom of the lower support (2), a blocking body (23) is provided in the telescopic chamber (22), a plurality of springs are provided on the side of the blocking body (23) away from the compression chamber (4), the blocking body (23) is slidably connected to the telescopic chamber (22), and a displacement sensor is provided on the placement platform (41).

7. The device for metal gasket compression creep test according to claim 6, characterized in that: The blocking body (23) is composed of a central block (231) and a plurality of blocking strips (232). The plurality of blocking strips (232) are arranged around one side of the central block (231). The air delivery cavity (21) is provided with a plurality of flow grooves (211) on a side close to the telescopic cavity (22). The central column (43) is provided with an arc groove (401) on a side close to the placement table (41). The flow groove (211) is provided with a plurality of bottom spray grooves (402) on a side close to the arc groove (401). The bottom of the compression cavity (4) is provided with a plurality of blocking grooves (403). The central block (231) is slidably connected to the empty groove (431). The blocking strips (232) are slidably connected to the blocking grooves (403). A connecting groove (233) is provided on the blocking strip (232). The connecting groove (233) connects the two sections of the flow grooves (211).

8. The device for metal gasket compression creep test according to claim 5, characterized in that: The movable groove (32) and the compression block (33) are connected in a sliding and sealed manner, and a heat-insulating layer is provided in both the compression chamber (4) and the extrusion block (3).

9. An experimental method using the apparatus for metal gasket compression creep testing according to any one of claims 1 to 8, characterized in that: The experimental method comprises the following specific steps: S1. Place the metal gasket in the compression chamber (4); S2, delivering air into the compression chamber (4); S3, the extrusion block (3) moves toward the compression chamber (4); S4, rotating the impeller (42) to drive air to clean the metal gasket, and after cleaning, the air is discharged and the compression chamber (4) is dried; S5, the extrusion block (3) and the compression chamber (4) cooperate with each other to perform a creep test on the metal gasket.

Images