A dry gas seal low speed test device

Abstract

The application provides a dry gas seal low-speed test device, and belongs to the technical field of dry gas seal low-speed test. The dry gas seal low-speed test device comprises a clamping structure and a supporting structure. The clamping structure comprises a bottom plate, a power assembly, a hollow block, a clamping assembly and a quick-mounting assembly. The power assembly is located at the front end of the top of the bottom plate. The hollow block is arranged on both sides of the top of the power assembly. The clamping assembly is located on the side close to the two hollow blocks. The quick-mounting assembly is arranged in the inner cavity of the hollow block. In the application, the dry gas seal assembly in the test is clamped and fixed by using the clamping assembly. The stability is improved. The clamping assembly has various shapes, and can be customized according to requirements. Therefore, the clamping assembly is suitable for dry gas seal assemblies of various specifications. The clamping assembly can be quickly disassembled and replaced through the quick-mounting assembly. Therefore, the time consumed when replacing the clamp is reduced, and the experimental efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of dry gas seal low-speed testing technology, and more specifically, to a dry gas seal low-speed testing device. Background Technology

[0002] Dry gas seals, as an advanced non-contact mechanical seal technology, have been widely used in high-speed rotating equipment. Their working principle is based on the gas dynamic pressure effect. By forming an extremely thin gas film between the sealing end faces, non-contact operation of the sealing end faces is achieved, which greatly reduces friction, wear and power consumption, and improves the reliability and service life of the equipment. However, in practical applications, dry gas seals are not only involved in high-speed conditions, but their performance in low-speed conditions is also important, especially during the start-up, shutdown and low-load operation of the equipment.

[0003] As a key sealing technology for high-speed rotating equipment such as compressors, the low-speed performance of dry gas seals directly affects the reliability and safety of the equipment during startup, shutdown, and low-load operation. The low-speed test of dry gas seals for compressors aims to simulate these actual working conditions, evaluate the performance of the seals at low speeds, and provide data support for seal optimization and safe equipment operation. The low-speed test device covers multiple aspects such as drive and speed control, gas supply and purification, seal installation and fixation, measurement and monitoring, and data acquisition and analysis. These devices work together to ensure the accuracy and reliability of the test, providing strong support for evaluating the performance of compressor dry gas seals under low-speed conditions.

[0004] The test fixture of the low-speed test device is a key component to ensure the accuracy and reliability of the test. It is used to fix the dry gas sealing assembly and ensure that the parallelism and perpendicularity of the sealing end face meet the requirements. Since the shape design of the dry gas sealing assembly varies depending on the application scenario, equipment type and sealing requirements, while the shape of the test fixture is usually fixed, it is difficult for the fixture to meet the requirements of various specifications of dry gas sealing assemblies. If the fixture is not compatible with the dry gas sealing assembly, it will affect the experiment and reduce the practicality of the test device. Utility Model Content

[0005] To overcome the above shortcomings, this application provides a low-speed dry gas seal testing device, which aims to improve the problem that the fixture is difficult to meet the requirements of various specifications of dry gas seal components. If the fixture is not compatible with the dry gas seal components, it will affect the test and reduce the practicality of the testing device.

[0006] This application provides a dry gas seal low-speed testing device, including a clamping structure and a support structure. The clamping structure includes a base plate, a power component, hollow blocks, a clamping assembly, and a quick-release assembly. The power component is located at the front end of the top of the base plate, the hollow blocks are disposed on both sides of the top of the power component, the clamping assembly is located on the side of the two hollow blocks that are close to each other, and the quick-release assembly is disposed in the inner cavity of the hollow blocks. The support structure includes a placement frame, a fixing plate, and a moving assembly. The placement frame is located at the top of the base plate, the fixing plate is fixedly connected to the rear end of the top of the base plate, and the moving assembly is located between the placement frame and the fixing plate.

[0007] In one specific implementation, the clamping assembly has a variable shape, and its thickness, size, and shape can be customized according to requirements.

[0008] In the above implementation process, the clamping components have various shapes and can be customized according to requirements, so they can be applied to a variety of dry gas sealing components of different specifications, thus improving the practicality of the test device.

[0009] In one specific implementation, the power assembly includes a protective box, a dual-axis motor, threaded rods, and a threaded sleeve. The protective box is fixedly connected to the front end of the top of the base plate. The dual-axis motor is fixedly connected to the inner cavity of the protective box. The output shafts on both sides of the dual-axis motor pass through the protective box and are respectively connected to the two threaded rods. The threads on the surfaces of the two threaded rods on both sides are arranged in opposite directions, and the surfaces of the threaded rods are provided with a self-locking structure. The threaded sleeve is threadedly connected to the surface of the threaded rods.

[0010] In the above implementation process, the protective box is used to fix and protect the dual-axis motor, which drives the threaded rods to rotate. The threads on the two threaded rods are arranged in opposite directions, so when the threaded rods rotate, they can drive the two threaded sleeves to move synchronously and in opposite directions. The surface of the threaded rods is provided with a self-locking structure, which can effectively prevent the position of the threaded sleeves from changing when the dual-axis motor stops rotating.

[0011] In one specific implementation, the power assembly further includes a fixing frame, a through groove, and a connecting plate. The fixing frame is fixedly connected to both sides of the top of the base plate, and one side of the top of the fixing frame is fixedly connected to the top of the protective box by bolts. The two ends of the threaded rod are respectively movably connected to the protective box and the side of the fixing frame that are close to each other by bearings. The through groove is opened at the top of the fixing frame, and the connecting plate is slidably connected to the inner cavity of the through groove. The top and bottom of the connecting plate are respectively fixedly connected to the bottom of the hollow block and the top of the threaded sleeve.

[0012] In the above implementation process, the fixed frame and the through groove cooperate to limit the connection plate and prevent its angle from deflecting. The connection plate is used to connect the clamping assembly and the threaded sleeve. At the same time, the threaded sleeve can drive the hollow block to move, thereby adjusting the position of the two clamping assemblies so that they can clamp and fix the dry gas sealing assembly, improving the stability during the test.

[0013] In one specific implementation, the quick-installation assembly includes an installation groove, an installation block, a fixing post, and a positioning groove. The installation groove is located on one side of two hollow blocks that are close to each other. The installation block is fixedly connected to one side of the clamping assembly, and the installation block is detachably connected to the inner cavity of the installation groove. The fixing post is fixedly connected to one side of the installation block, and the positioning groove is located on the top of the fixing post.

[0014] In the above implementation process, the mounting slot and mounting block work together to position the clamping component and prevent its angle from deflecting.

[0015] In one specific implementation, the positioning groove further includes a receiving groove, a movable frame, and a positioning piece. The receiving groove is opened at the top of the hollow block, the movable frame is slidably connected to the inner cavity of the receiving groove, and the positioning piece is fixedly connected to the bottom of the inner cavity of the movable frame. The bottom of the positioning piece engages with the inner cavity of the positioning groove.

[0016] In the above implementation process, the receiving groove is used to accommodate the movable frame, the movable frame is used to control the position of the positioning piece, the positioning piece is inserted into the inner cavity of the positioning groove, which can fix the mounting block in the inner cavity of the mounting groove, thereby improving the stability of the clamping assembly during use.

[0017] In one specific embodiment, the quick-release assembly further includes a circular groove and a tension spring. The circular groove is formed on both sides of the bottom of the movable frame, and the tension spring is located in the inner cavity of the circular groove. The top and bottom of the tension spring are fixedly connected to the top of the inner cavity of the circular groove and the bottom of the inner cavity of the receiving groove, respectively.

[0018] In the above implementation process, the circular groove is used to accommodate the tension spring, which is made of stainless steel. Its return force is used to drive the movable frame to return to its original position, so that the positioning piece is firmly inserted into the positioning groove.

[0019] In one specific implementation, the moving component includes a cylinder, a limiting frame, and a limiting rod. The cylinder is fixedly connected to the center of the front of the fixed plate, and the output end of the cylinder is fixedly connected to the back of the placement frame. The limiting frame is fixedly connected to the front of the placement frame, and the limiting rod is slidably connected to both sides of the inner cavity of the limiting frame. The front and back of the limiting rod are fixedly connected to the back of the protective box and the front of the fixed plate, respectively.

[0020] During the above process, when the cylinder output end extends or retracts, it can drive the placement frame to move so that the dry gas sealing assembly placed on top of it can be moved between the two clamping assemblies. The limiting frame and the limiting rod cooperate to limit the placement frame and ensure the stability of its angle.

[0021] In one specific implementation, the moving component further includes a chute and a pulley. The chute is formed at the top of the limiting rod and is fixedly connected to the top and bottom of the inner cavity of the limiting frame. The bottom of the pulley is slidably connected to the inner cavity of the chute.

[0022] In the above implementation process, the cooperation between the slide and the pulley further improves the limiting effect, while also reducing friction during movement, reducing wear and energy loss.

[0023] In one specific implementation, the protective box has a vent on the front for ventilation, and a dustproof net for dust prevention is fixedly connected to the inner cavity of the vent.

[0024] In the above process, the heat generated by the dual-axis motor during operation can be dissipated through the ventilation openings, while the dust filter is used to prevent dust from entering the protective box.

[0025] Compared with the prior art, the beneficial effects of this application are as follows: by using clamping components to clamp and fix the dry gas sealing components in the test, the stability is improved. The clamping components have various shapes and can be customized according to needs, so they are suitable for dry gas sealing components of various specifications. The quick-release components can quickly disassemble and replace the clamping components, thereby reducing the time consumed when changing the fixtures and improving the experimental efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a dry gas seal low-speed test device provided in the embodiments of this application;

[0028] Figure 2 A front view schematic diagram of the clamping structure of a dry gas seal low-speed test device provided for the embodiments of this application;

[0029] Figure 3 A schematic diagram of the main structure of the support structure provided in the embodiments of this application;

[0030] Figure 4 This is a front view of the placement rack provided in an embodiment of this application;

[0031] Figure 5 A cross-sectional structural schematic diagram of the protective box provided for an embodiment of this application;

[0032] Figure 6 A schematic diagram of the separated state structure of the receiving groove and the movable frame provided in the embodiments of this application;

[0033] Figure 7 A partial cross-sectional view of the movable frame provided for an embodiment of this application;

[0034] Figure 8 This is a front view of the clamping assembly provided in an embodiment of this application.

[0035] In the diagram: 10. Clamping structure; 110. Power assembly; 1101. Protective box; 1102. Dual-axis motor; 1103. Threaded rod; 1104. Threaded sleeve; 1105. Fixing frame; 1106. Through slot; 1107. Connecting plate; 120. Hollow block; 130. Clamping assembly; 140. Quick-release assembly; 1401. Mounting slot; 1402. Mounting block; 1403. Fixing column; 1404. Positioning slot; 1405. Receiving slot; 1406. Movable frame; 1407. Positioning piece; 1408. Circular slot; 1409. Tension spring; 20. Support structure; 210. Placement frame; 220. Fixing plate; 230. Moving assembly; 2301. Cylinder; 2302. Limit frame; 2303. Limiting rod; 2304. Slide groove; 2305. Pulley. Detailed Implementation

[0036] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0037] Please see Figure 1 This application provides a dry gas seal low-speed test device, including a clamping structure 10 and a support structure 20.

[0038] Please see Figure 1 and Figure 2 The clamping structure 10 includes a base plate, a power assembly 110, hollow blocks 120, a clamping assembly 130, and a quick-release assembly 140. The power assembly 110 is located at the front end of the top of the base plate, the hollow blocks 120 are disposed on both sides of the top of the power assembly 110, the clamping assembly 130 is located on the side of the two hollow blocks 120 that are close to each other, and the quick-release assembly 140 is disposed in the inner cavity of the hollow blocks 120.

[0039] Please see Figure 1and Figure 3 The support structure 20 includes a placement frame 210, a fixing plate 220, and a moving component 230. The placement frame 210 is located on the top of the base plate, the fixing plate 220 is fixedly connected to the rear end of the top of the base plate, and the moving component 230 is located between the placement frame 210 and the fixing plate 220.

[0040] In specific settings, the shape of the clamping component 130 is not fixed. Its thickness, size and shape can be customized according to requirements. The clamping component 130 has a variety of shapes and can be customized according to requirements. Therefore, it can be applied to a variety of dry gas sealing components of different specifications, improving the practicality of the test device.

[0041] In a specific configuration, the power assembly 110 includes a protective box 1101, a dual-axis motor 1102, threaded rods 1103, and threaded sleeves 1104. The protective box 1101 is fixedly connected to the front end of the top of the base plate. The dual-axis motor 1102 is fixedly connected to the inner cavity of the protective box 1101. The output shafts on both sides of the dual-axis motor 1102 pass through the protective box 1101 and are respectively connected to the two threaded rods 1103. The threads on the surfaces of the two threaded rods 1103 are arranged in opposite directions, and the surfaces of the threaded rods 1103 are provided with a self-locking structure. The threaded sleeves 1104 are threadedly connected to the surfaces of the threaded rods 1103. The protective box 1101 is used to fix and protect the dual-axis motor 1102. The dual-axis motor 1102 is used to drive the threaded rods 1103 to rotate. Since the threads on the surfaces of the two threaded rods 1103 are arranged in opposite directions, when the threaded rods 1103 rotate, they can drive the two threaded sleeves 1104 to move synchronously and in opposite directions. The surface of the threaded rod 1103 is provided with a self-locking structure, which can effectively prevent the position of the threaded sleeve 1104 from changing when the dual-axis motor 1102 stops rotating.

[0042] In its specific configuration, the power assembly 110 also includes a fixing frame 1105, a through groove 1106, and a connecting plate 1107. The fixing frame 1105 is fixedly connected to both sides of the top of the base plate, and one side of the top of the fixing frame 1105 is fixedly connected to the top of the protective box 1101 by bolts. The two ends of the threaded rod 1103 are respectively movably connected to the sides of the protective box 1101 and the fixing frame 1105 that are close to each other by bearings. The through groove 1106 is opened on the top of the fixing frame 1105, and the connecting plate 1107 is slidably connected to the inner cavity of the through groove 1106. The top and bottom of the connecting plate 1107 are fixedly connected to the bottom of the hollow block 120 and the top of the threaded sleeve 1104, respectively. The fixing bracket 1105 and the through groove 1106 cooperate to limit the connecting plate 1107 and prevent its angle from deflecting. The connecting plate 1107 is used to connect the clamping assembly 130 and the threaded sleeve 1104. The threaded sleeve 1104 can drive the hollow block 120 to move, thereby adjusting the position of the two clamping assemblies 130 so that they can clamp and fix the dry gas sealing assembly, improving the stability during the test.

[0043] In a specific configuration, the quick-installation assembly 140 includes a mounting groove 1401, a mounting block 1402, a fixing post 1403, and a positioning groove 1404. The mounting groove 1401 is located on one side of the two hollow blocks 120 that are close to each other. The mounting block 1402 is fixedly connected to one side of the clamping assembly 130, and the mounting block 1402 is detachably connected to the inner cavity of the mounting groove 1401. The fixing post 1403 is fixedly connected to one side of the mounting block 1402. The positioning groove 1404 is located on the top of the fixing post 1403. The mounting groove 1401 and the mounting block 1402 work together to position the clamping assembly 130 and prevent its angle from deflecting.

[0044] In a specific configuration, the positioning groove 1404 also includes a receiving groove 1405, a movable frame 1406, and a positioning piece 1407. The receiving groove 1405 is located on the top of the hollow block 120. The movable frame 1406 is slidably connected to the inner cavity of the receiving groove 1405. The positioning piece 1407 is fixedly connected to the bottom of the inner cavity of the movable frame 1406. The bottom of the positioning piece 1407 engages with the inner cavity of the positioning groove 1404. The receiving groove 1405 is used to receive the movable frame 1406. The movable frame 1406 is used to control the position of the positioning piece 1407. When the positioning piece 1407 is inserted into the inner cavity of the positioning groove 1404, it can fix the mounting block 1402 in the inner cavity of the mounting groove 1401, thereby improving the stability of the clamping assembly 130 during use.

[0045] In a specific configuration, the quick-release assembly 140 also includes a circular groove 1408 and a tension spring 1409. The circular groove 1408 is located on both sides of the bottom of the movable frame 1406. The tension spring 1409 is located in the inner cavity of the circular groove 1408, and the top and bottom of the tension spring 1409 are fixedly connected to the top of the inner cavity of the circular groove 1408 and the bottom of the inner cavity of the receiving groove 1405, respectively. The circular groove 1408 is used to receive the tension spring 1409. The tension spring 1409 is made of stainless steel, and its return spring force is used to drive the movable frame 1406 to return to its original position, so that the positioning piece 1407 is firmly inserted into the positioning groove 1404.

[0046] In a specific configuration, the moving component 230 includes a cylinder 2301, a limiting frame 2302, and a limiting rod 2303. The cylinder 2301 is fixedly connected to the center of the front of the fixing plate 220, and the output end of the cylinder 2301 is fixedly connected to the back of the placement frame 210. The limiting frame 2302 is fixedly connected to the front of the placement frame 210, and the limiting rod 2303 is slidably connected to both sides of the inner cavity of the limiting frame 2302. The front and back of the limiting rod 2303 are fixedly connected to the back of the protective box 1101 and the front of the fixing plate 220, respectively, which can drive the placement frame 210 to move so as to move the dry gas sealing component placed on top of it between the two clamping components 130. The limiting frame 2302 and the limiting rod 2303 cooperate to limit the placement frame 210 and ensure the stability of its angle.

[0047] In a specific configuration, the moving component 230 also includes a slide groove 2304 and a pulley 2305. The slide groove 2304 is formed on the top of the limiting rod 2303 and is fixedly connected to the top and bottom of the inner cavity of the limiting frame 2302. The bottom of the pulley 2305 is slidably connected to the inner cavity of the slide groove 2304. The cooperation of the slide groove 2304 and the pulley 2305 further improves the limiting effect, while also reducing friction during movement, reducing wear, and reducing energy loss.

[0048] In the specific configuration, the protective box 1101 has a vent on the front for ventilation, and a dustproof net is fixedly connected to the inner cavity of the vent for dust prevention. The heat generated by the dual-axis motor 1102 during operation can be dissipated through the vent, while the dustproof net is used to prevent dust from entering the interior of the protective box 1101.

[0049] The working principle of this dry gas seal low-speed testing device is as follows: First, the clamping assembly 130 adapted to the dry gas seal assembly to be tested is installed. During installation, the movable frame 1406 is pulled upward to move it upward. When the movable frame 1406 moves upward, it can pull the tension spring 1409 and cause it to deform. Then, the movable clamping assembly 130 is moved, and the mounting block 1402 is inserted into the inner cavity of the mounting groove 1401. At this time, the fixing column 1403 will be inserted into the inner cavity of the hollow block 120. The movable frame 1406 is released. At this time, the movable frame 1406 will be reset under the action of the return force of the tension spring 1409, and the positioning piece 1407 will be inserted into the inner cavity of the positioning groove 1404 to position the mounting block 1402. The clamping assembly 130 can then be installed. 30. Securely install. After installation, start cylinder 2301 via external controller to extend its output end. The extended output end of cylinder 2301 can drive the placement frame 210 forward until the dry gas sealing assembly placed on top of the placement frame 210 moves between the two clamping assemblies 130. At this time, close cylinder 2301 and start dual-axis motor 1102. The output shafts on both sides of dual-axis motor 1102 drive two threaded rods 1103 to rotate. When the threaded rods 1103 rotate, they can drive two threaded sleeves 1104 to move synchronously and in opposite directions. This causes the threaded sleeves 1104 to cooperate with the connecting plate 1107 to drive the two clamping assemblies 130 to move, so that the two clamping assemblies 130 gradually approach each other and clamp and fix the dry gas sealing assembly.

[0050] Once fixed, the test can begin. First, the test setup is checked to ensure all components are functioning correctly. Initially, the drive and speed control system starts the geared motor at a low speed range via the frequency converter, gradually increasing the speed to the target value. The gas supply and purification system adjusts the gas flow and pressure to the set values ​​to ensure stable gas film formation. The measurement and monitoring system monitors parameters such as leakage, end-face temperature, vibration, and speed in real time, recording initial data. The drive and speed control system maintains stable operation at the target low speed, controlling speed fluctuations within ±1%. The gas supply and purification system continuously supplies stable gas, monitoring gas purity and pressure changes to ensure gas film performance. The system records leakage, end-face temperature, and vibration data every 15 minutes, observing parameter trends. The data acquisition and analysis system's data acquisition card simultaneously collects multi-channel data, transmits it to a computer for analysis, and generates real-time curves and reports. During deceleration and shutdown, the drive and speed control system gradually reduces the speed to a standstill, recording parameter changes during deceleration. The gas supply and purification system shuts off the gas supply system and vents residual gas. The measurement and monitoring system records the final data after shutdown, checks for wear or abnormalities on the sealing end face, and finally imports the collected leakage, temperature, vibration, and speed data into the data analysis software to generate test curves and reports for evaluation.

[0051] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dry gas seal low-speed testing device, characterized in that, include The clamping structure (10) includes a base plate, a power assembly (110), hollow blocks (120), a clamping assembly (130), and a quick-release assembly (140). The power assembly (110) is located at the front end of the top of the base plate. The hollow blocks (120) are disposed on both sides of the top of the power assembly (110). The clamping assembly (130) is located on the side where the two hollow blocks (120) are close to each other. The quick-release assembly (140) is disposed in the inner cavity of the hollow block (120). The support structure (20) includes a placement rack (210), a fixing plate (220), and a moving component (230). The placement rack (210) is located on the top of the base plate, the fixing plate (220) is fixedly connected to the rear end of the top of the base plate, and the moving component (230) is located between the placement rack (210) and the fixing plate (220).

2. The dry gas seal low-speed test device according to claim 1, characterized in that, The shape of the clamping assembly (130) is not fixed, and its thickness, size and shape can be customized according to requirements.

3. The dry gas seal low-speed test device according to claim 1, characterized in that, The power assembly (110) includes a protective box (1101), a dual-axis motor (1102), a threaded rod (1103), and a threaded sleeve (1104). The protective box (1101) is fixedly connected to the front end of the top of the base plate. The dual-axis motor (1102) is fixedly connected to the inner cavity of the protective box (1101). The output shafts on both sides of the dual-axis motor (1102) pass through the protective box (1101) and are respectively connected to the two threaded rods (1103). The threads on the surfaces of the two threaded rods (1103) are arranged in opposite directions, and the surfaces of the threaded rods (1103) are provided with a self-locking structure. The threaded sleeve (1104) is threadedly connected to the surface of the threaded rod (1103).

4. The dry gas seal low-speed test device according to claim 3, characterized in that, The power assembly (110) also includes a fixing frame (1105), a through groove (1106), and a connecting plate (1107). The fixing frame (1105) is fixedly connected to both sides of the top of the base plate, and one side of the top of the fixing frame (1105) is fixedly connected to the top of the protective box (1101) by bolts. The two ends of the threaded rod (1103) are respectively connected to the side of the protective box (1101) and the fixing frame (1105) that are close to each other by bearings. The through groove (1106) is opened on the top of the fixing frame (1105). The connecting plate (1107) is slidably connected to the inner cavity of the through groove (1106). The top and bottom of the connecting plate (1107) are respectively fixedly connected to the bottom of the hollow block (120) and the top of the threaded sleeve (1104).

5. The dry gas seal low-speed test device according to claim 1, characterized in that, The quick-installation assembly (140) includes an installation groove (1401), an installation block (1402), a fixing post (1403), and a positioning groove (1404). The installation groove (1401) is located on one side of two hollow blocks (120) that are close to each other. The installation block (1402) is fixedly connected to one side of the clamping assembly (130), and the installation block (1402) is detachably connected to the inner cavity of the installation groove (1401). The fixing post (1403) is fixedly connected to one side of the installation block (1402), and the positioning groove (1404) is located on the top of the fixing post (1403).

6. The dry gas seal low-speed test device according to claim 5, characterized in that, The positioning groove (1404) also includes a receiving groove (1405), a movable frame (1406), and a positioning piece (1407). The receiving groove (1405) is opened on the top of the hollow block (120). The movable frame (1406) is slidably connected to the inner cavity of the receiving groove (1405). The positioning piece (1407) is fixedly connected to the bottom of the inner cavity of the movable frame (1406). The bottom of the positioning piece (1407) engages with the inner cavity of the positioning groove (1404).

7. The dry gas seal low-speed test device according to claim 6, characterized in that, The quick-release assembly (140) also includes a circular groove (1408) and a tension spring (1409). The circular groove (1408) is opened on both sides of the bottom of the movable frame (1406). The tension spring (1409) is located in the inner cavity of the circular groove (1408), and the top and bottom of the tension spring (1409) are fixedly connected to the top of the inner cavity of the circular groove (1408) and the bottom of the inner cavity of the receiving groove (1405), respectively.

8. The dry gas seal low-speed test device according to claim 1, characterized in that, The moving component (230) includes a cylinder (2301), a limiting frame (2302), and a limiting rod (2303). The cylinder (2301) is fixedly connected to the center of the front of the fixing plate (220), and the output end of the cylinder (2301) is fixedly connected to the back of the placement rack (210). The limiting frame (2302) is fixedly connected to the front of the placement rack (210). The limiting rod (2303) is slidably connected to both sides of the inner cavity of the limiting frame (2302), and the front and back of the limiting rod (2303) are fixedly connected to the back of the protective box (1101) and the front of the fixing plate (220), respectively.

9. A dry gas seal low-speed testing device according to claim 8, characterized in that, The moving component (230) further includes a slide groove (2304) and a pulley (2305). The slide groove (2304) is opened on the top of the limiting rod (2303). The slide groove (2304) is fixedly connected to the top and bottom of the inner cavity of the limiting frame (2302). The bottom of the pulley (2305) is slidably connected to the inner cavity of the slide groove (2304).

10. A dry gas seal low-speed testing device according to claim 3, characterized in that, The protective box (1101) has a ventilation opening on the front for ventilation, and a dustproof net for dust prevention is fixedly connected to the inner cavity of the ventilation opening.

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