Mechanical seal testing device

Abstract

The utility model relates to a mechanical seal testing device, and the device comprises a fixed part which is disposed on a test bench; the driving piece is arranged on the fixing piece; an accommodating cavity for mounting the mechanical seal is formed in the mounting part; the clamping assembly is arranged on the outer wall of the mounting part in the circumferential direction, and at least part of the clamping assembly is located in the containing cavity and can move in the radial direction of the mounting part so as to clamp the mechanical seal; the test piece is used for testing the mechanical seal; the guide part is arranged between the fixing part and the mounting part and is rotationally connected with the fixing part, the driving end of the driving part sequentially penetrates through the fixing part and the guide part to be connected with the mounting part, an arc-shaped guide groove is formed in the guide part, and the clamping assembly is slidably connected with the guide groove. When the mounting part rotates, the clamping assembly moves along the arc-shaped guide groove, so that the clamping assembly moves in the radial direction of the mounting part to clamp the mechanical seal, the faster the mounting part rotates, the tighter the clamping is, and the mechanical seal is prevented from falling off.

Description

Technical Field

[0001] This disclosure relates to the field of testing equipment technology, and more specifically, to a mechanical seal testing device. Background Technology

[0002] Mechanical seals are devices that prevent fluid leakage. They are mainly used as shaft seals in rotating fluid machinery. Mechanical seals have advantages such as low leakage and long service life, and are therefore widely used in various equipment, such as centrifugal pumps, centrifuges, reactors and compressors.

[0003] While existing mechanical seal testing devices can test mechanical seals during use, they cannot effectively clamp and fix the mechanical seals during testing, which can cause the mechanical seals to fall off during high-speed operation. Utility Model Content

[0004] The purpose of this disclosure is to provide a mechanical seal testing device that can solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this disclosure provides a mechanical seal testing device, comprising: a test bench; a fixing member disposed on the test bench; a driving member disposed on the fixing member; a mounting member having a receiving cavity for mounting a mechanical seal; a clamping assembly disposed circumferentially on the outer wall of the mounting member, the clamping assembly being at least partially located within the receiving cavity and movable radially along the mounting member to clamp the mechanical seal; a test piece for testing the mechanical seal; and a guide member disposed between the fixing member and the mounting member and rotatably connected to the fixing member, the driving end of the driving member passing sequentially through the fixing member and the guide member and connected to the mounting member, the guide member having an arc-shaped guide groove, the clamping assembly being slidably connected to the guide groove to drive the clamping assembly to move along the guide groove when the mounting member rotates, thereby causing the clamping assembly to move radially along the mounting member.

[0006] Optionally, the clamping assembly is provided in multiple sets, and the guide groove is provided in multiple ways. The multiple guide grooves are spiral in shape, and when the mounting component rotates, the clamping assembly moves along the guide groove towards the inner side of the spiral.

[0007] Optionally, the clamping assembly includes a drive rod and a clamping block. The drive rod extends axially along the mounting member and is connected to the clamping block. The mounting member has a connecting groove extending radially along the mounting member on the side near the guide member. The drive rod passes through the connecting groove and is slidably connected to the guide groove.

[0008] Optionally, the outer wall of the mounting component is provided with a limiting hole, the clamping assembly further includes a moving block, the moving block passes through the limiting hole, the clamping block is disposed on the side of the moving block away from the guide and connected to the portion of the moving block located in the receiving cavity, and the driving rod is arranged perpendicular to the moving block.

[0009] Optionally, the clamping assembly further includes a slide rail, which is fixedly disposed within the limiting hole and has one end opening located outside the receiving cavity. The moving block is disposed within the slide rail and is slidably connected to the slide rail.

[0010] Optionally, the mechanical seal testing device further includes a high-temperature chamber mounted on the test bench, and the high-temperature chamber is equipped with a heating device.

[0011] Optionally, the top of the high-temperature chamber is provided with an exhaust port, and the exhaust port is provided with an openable and closable plug.

[0012] Optionally, the mechanical seal testing device further includes an exhaust pipe, a spring, and a support plate. The exhaust pipe is located at the top of the high-temperature chamber and outside the exhaust hole. The diameter of the exhaust pipe is larger than the diameter of the exhaust hole. A movable groove extending along the height direction is provided on the inner wall of the exhaust pipe. The spring is located in the movable groove. One end of the support plate is connected to the plug, and the other end is connected to the end of the spring near the plug.

[0013] Optionally, the mechanical seal testing device further includes a push rod and a cover plate. One end of the push rod is connected to the side of the plug away from the high-temperature chamber, and the other end extends in the same direction as the exhaust pipe and is connected to the cover plate. The diameter of the cover plate is larger than the diameter of the exhaust pipe so as to cover the end of the exhaust pipe when the plug blocks the exhaust hole.

[0014] Optionally, the test piece includes a placement block and a detection element, the placement block having a test cavity, and the detection element being disposed within the test cavity.

[0015] With the above technical solution, the fixing component is installed on the test bench, the driving component is located on one side of the fixing component, the mounting component is located on the other side of the fixing component, the guide component is located between the fixing component and the mounting component and is rotatably connected to the fixing component, the mechanical seal is installed in the receiving cavity of the mounting component and clamped and fixed by the clamping assembly, the driving component drives the mounting component to rotate, thereby driving the mechanical seal to rotate and testing the mechanical seal through the test piece, while the mounting component rotates, the clamping assembly moves along the arc-shaped guide groove, thereby causing the clamping assembly to move radially along the mounting component to clamp the mechanical seal, after clamping, the clamping assembly drives the guide component to rotate, to prevent the guide component from being fixed when the mounting component rotates, thus preventing the clamping assembly from breaking. The faster the mounting component rotates, the tighter the clamping, thereby preventing the mechanical seal from falling off.

[0016] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the mechanical seal testing device disclosed herein;

[0019] Figure 2 This is a cross-sectional view of the fastener in this disclosure;

[0020] Figure 3 This is a cross-sectional view of the installation component in this disclosure;

[0021] Figure 4 This is a side view of the mounting component in this disclosure;

[0022] Figure 5 This is a schematic diagram of the structure of the guide component in this disclosure;

[0023] Figure 6 This is a schematic diagram of the structure of the clamping component in this disclosure;

[0024] Figure 7 This is a cross-sectional view of the high-temperature chamber disclosed in this publication;

[0025] Figure 8 This is a cross-sectional view of the exhaust pipe in this disclosure.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Test stand; 2. Control component; 3. Fixing component; 31. Slot; 4. Drive component; 5. Test piece; 51. Placement block; 52. Test chamber; 6. High temperature chamber; 7. Exhaust pipe; 71. Moving groove; 8. Placement stand; 9. Guide component; 91. Through hole; 92. Guide groove; 93. Slot; 10. Mounting component; 101. Limiting hole; 102. Connecting groove; 103. Receiving cavity; 11. Clamping assembly; 111. Slide; 112. Moving block; 113. Clamping block; 114. Drive rod; 12. Plug; 13. Spring; 14. Support plate; 15. Top rod; 16. Cover plate. Detailed Implementation

[0028] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" generally refer to the upper, lower, top, and bottom of the corresponding component in the direction of gravity when in use, while "inner" and "outer" refer to the inner and outer contours relative to the component or structure itself. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same elements.

[0030] like Figure 1-5 As shown, this disclosure provides a mechanical seal testing device, including: a test bench 1; a fixing member 3 disposed on the test bench 1; a driving member 4 disposed on the fixing member 3; a mounting member 10 having a receiving cavity 103 for mounting the mechanical seal; a clamping assembly 11 disposed circumferentially on the outer wall of the mounting member 10, the clamping assembly 11 being at least partially located within the receiving cavity 103 and movable radially along the mounting member 10 to clamp the mechanical seal; a test member 5 for testing the mechanical seal; and a guide member 9 disposed between the fixing member 3 and the mounting member 10 and rotatably connected to the fixing member 3. The driving end of the driving member 4 passes through the fixing member 3 and the guide member 9 in sequence and is connected to the mounting member 10. A through hole 91 for the driving end to pass through is provided at the center of the guide member 9. An arc-shaped guide groove 92 is provided on the guide member 9. The clamping assembly 11 is slidably connected to the guide groove 92 so that when the mounting member 10 rotates, the clamping assembly 11 is driven to move along the guide groove 92, so that the clamping assembly 11 moves radially along the mounting member 10.

[0031] With the above technical solution, the fixing component 3 is installed on the test bench 1, the driving component 4 is located on one side of the fixing component 3, the mounting component 10 is located on the other side of the fixing component 3, and the guide component 9 is located between the fixing component 3 and the mounting component 10 and is rotatably connected to the fixing component 3. For example, it can be rotatably connected by setting a bearing, or a slot 31 can be set on one of the fixing component 3 or the guide component 9, and a block 93 can be set on the other for rotatable connection. The mechanical seal is installed in the receiving cavity 103 of the mounting component 10 and is clamped and fixed by the clamping assembly 11. A control component 2 can be set on the test bench 1, and the control component 2 can be used to... The switch of the control drive component 4 is, for example, the drive component 4 is a drive motor. The drive component 4 drives the mounting component 10 to rotate, thereby driving the mechanical seal to rotate and testing the mechanical seal through the test component 5. While the mounting component 10 is rotating, the clamping assembly 11 moves along the arc-shaped guide groove 92, thereby causing the clamping assembly 11 to move radially along the mounting component 10 to clamp the mechanical seal. After clamping, the clamping assembly 11 drives the guide component 9 to rotate, preventing the guide component 9 from being fixed when the mounting component 10 is rotating, thus preventing the clamping assembly 11 from breaking. The faster the mounting component 10 rotates, the tighter the clamping, thereby preventing the mechanical seal from falling off.

[0032] As an optional implementation method, such as Figure 4-5As shown, multiple sets of clamping assemblies 11 are provided, which clamp the outer periphery of the mechanical seal. Multiple guide grooves 92 are provided, and these guide grooves 92 are spiral-shaped. When the mounting member 10 rotates, the clamping assemblies 11 move along the guide grooves 92 towards the inner side of the spiral, gradually converging towards the center to clamp the mechanical seal. Before the drive member 4 is opened, the mechanical seal is placed inside the receiving cavity 103, located inside the clamping assemblies 11. Rotating the mounting member 10 causes the clamping assemblies 11 to fit against the outer wall of the mechanical seal, providing a certain preload force to fix the mechanical seal. If the mechanical seal is heavy, a torsion spring can be installed between the mounting member 10 and the guide member 9 to provide preload force using the spring's elasticity.

[0033] As an optional implementation method, such as Figure 2-4 and Figure 6 As shown, the clamping assembly 11 includes a drive rod 114 and a clamping block 113. The drive rod 114 extends axially along the mounting member 10 and is connected to the clamping block 113. The mounting member 10 has a connecting groove 102 extending radially along the side near the guide member 9. The drive rod 114 passes through the connecting groove 102 and is slidably connected to the guide groove 92. The drive rod 114 moves radially along the mounting member 10 through the connecting groove 102. The drive rod 114 is connected to the clamping block 113 to drive the clamping block 113 to move.

[0034] Optionally, such as Figure 3 and Figure 6 As shown, the outer wall of the mounting component 10 is provided with a limiting hole 101. The clamping assembly 11 also includes a moving block 112, which passes through the limiting hole 101. The clamping block 113 is disposed on the side of the moving block 112 away from the guide member 9 and connected to the part of the moving block 112 located in the receiving cavity 103. The drive rod 114 is arranged perpendicular to the moving block 112, that is, the moving block 112 extends radially along the mounting component 10. The moving block 112 passes through the limiting hole 101 and has a certain length to limit the moving block 112 when the mounting component 10 rotates, preventing the clamping block 113 from moving along the guide groove 92 with the drive rod 114 instead of moving radially along the mounting component 10.

[0035] In addition, such as Figure 6As shown, the clamping assembly 11 also includes a slide 111. The slide 111 is fixedly installed inside the limiting hole 101 and has one end open outside the receiving cavity 103. The moving block 112 is installed inside the slide 111 and is slidably connected to the slide 111. The slide 111 is fixedly installed inside the limiting hole 101. The moving block 112 is slidably connected to the slide 111 so that the moving block 112 can move along the slide 111. The slide 111 is only open at the top and the bottom limits the moving block 112. Because the drive rod 114 is located inside the receiving cavity 103, the moving block 112 cannot be disengaged from the opening of the slide 111. The slide 111 plays a role in protecting and guiding the moving block 112.

[0036] As an optional implementation method, such as Figure 1 and Figure 7 As shown, the mechanical seal testing device also includes a high-temperature chamber 6 set on the test bench 1. The high-temperature chamber 6 is equipped with a heating device, such as an electric heating device. The high-temperature chamber 6 is equipped with a temperature sensor to measure the temperature inside the high-temperature chamber 6. The high-temperature chamber 6 is used for high-temperature resistance testing of mechanical seals. It is equipped with a placement platform 8, on which the mechanical seal is placed.

[0037] Optionally, the top of the high-temperature chamber 6 is provided with an exhaust port and an openable plug 12 at the exhaust port. As the internal temperature of the high-temperature chamber 6 increases, the internal pressure of the high-temperature chamber 6 will gradually increase. In order to prevent the internal pressure of the high-temperature chamber 6 from being too high, an exhaust port and a plug 12 are provided. When the internal pressure of the high-temperature chamber 6 reaches a specific value, the plug 12 is opened to exhaust and reduce the pressure. After the pressure is reduced, the plug 12 is closed.

[0038] In addition, such as Figure 8 As shown, the mechanical seal testing device also includes an exhaust pipe 7, a spring 13, and a support plate 14. The exhaust pipe 7 is located at the top of the high-temperature chamber 6 and outside the exhaust hole. The diameter of the exhaust pipe 7 is larger than the diameter of the exhaust hole so that gas can be discharged from the exhaust pipe 7, and space is reserved for installing the support plate 14. The inner wall of the exhaust pipe 7 is provided with a moving groove 71 extending along the height direction. The spring 13 is located in the moving groove 71. One end of the support plate 14 is connected to the plug 12, and the other end is connected to the end of the spring 13 near the plug 12. For the stability of the plug 12, four support plates 14 can be provided. As the pressure inside the high-temperature chamber 6 increases, the gas pushes the plug 12 at the exhaust hole open, the spring 13 is compressed, and the gas is discharged. As the pressure decreases, the spring 13 resets and presses the plug 12 back onto the exhaust hole to close the exhaust hole, preventing the temperature inside the high-temperature chamber 6 from escaping. In this way, the pressure can be automatically discharged without manual operation. Of course, in other implementations, a pressure gauge can be installed inside the high-temperature chamber 6. When a specific pressure is reached, the plug 12 can be manually opened, and when the pressure decreases, the plug 12 can be pressed back onto the vent.

[0039] Optionally, such as Figure 8 As shown, the mechanical seal testing device also includes a push rod 15 and a cover plate 16. One end of the push rod 15 is connected to the side of the plug 12 away from the high temperature chamber 6, and the other end extends in the same direction as the exhaust pipe 7 and is connected to the cover plate 16. The diameter of the cover plate 16 is larger than the diameter of the exhaust pipe 7 so that it covers the end of the exhaust pipe 7 when the plug 12 blocks the exhaust hole. As the plug 12 is pushed up, the push rod 15 simultaneously pushes up the cover plate 16. When the plug 12 falls, the cover plate 16 covers the end of the exhaust pipe 7. The cover plate 16 can protect the internal components of the exhaust pipe 7 on the one hand, and limit the movement on the other hand to prevent the plug 12 from being pressed too tightly against the exhaust hole and thus unable to open.

[0040] As an optional implementation method, such as Figure 1 As shown, the test piece 5 includes a placement block 51 and a detection piece. The placement block 51 has a test cavity 52, and the detection piece is set in the test cavity 52. ​​The mechanical seal extends into the test cavity 52 for testing. For example, the detection piece can be a speed sensor, a torque measuring instrument, etc., used to measure the torque and speed of the mechanical seal. Different detection pieces can also be replaced according to the different items to be tested.

[0041] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0043] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A mechanical seal testing device, characterized in that, include: Test bench; A fastener is provided on the test bench; The driving component is mounted on the fixing component; The mounting component has a cavity for mounting the mechanical seal; A clamping assembly is disposed circumferentially on the outer wall of the mounting member, the clamping assembly being at least partially located within the receiving cavity and movable radially along the mounting member to clamp the mechanical seal; Test specimen, used to test the mechanical seal; as well as A guide member is disposed between the fixing member and the mounting member and is rotatably connected to the fixing member. The driving end of the driving member passes through the fixing member and the guide member in sequence and is connected to the mounting member. The guide member is provided with an arc-shaped guide groove. The clamping assembly is slidably connected to the guide groove so as to drive the clamping assembly to move along the guide groove when the mounting member rotates, so as to make the clamping assembly move radially along the mounting member.

2. The mechanical seal testing device according to claim 1, characterized in that, The clamping assembly is provided in multiple sets, and the guide groove is provided in multiple ways. The multiple guide grooves are spiral in shape. When the mounting component rotates, the clamping assembly moves along the guide groove towards the inner side of the spiral.

3. The mechanical seal testing device according to claim 1 or 2, characterized in that, The clamping assembly includes a drive rod and a clamping block. The drive rod extends axially along the mounting member and is connected to the clamping block. The mounting member has a connecting groove extending radially along the side of the mounting member near the guide member. The drive rod passes through the connecting groove and is slidably connected to the guide groove.

4. The mechanical seal testing device according to claim 3, characterized in that, The mounting component has a limiting hole on its outer wall. The clamping assembly also includes a moving block, which passes through the limiting hole. The clamping block is located on the side of the moving block away from the guide and is connected to the portion of the moving block located in the receiving cavity. The driving rod is perpendicular to the moving block.

5. The mechanical seal testing device according to claim 4, characterized in that, The clamping assembly also includes a slide, which is fixedly inserted into the limiting hole and has one end opening located outside the receiving cavity. The moving block is disposed in the slide and is slidably connected to the slide.

6. The mechanical seal testing device according to claim 1, characterized in that, The mechanical seal testing device also includes a high-temperature chamber set on the test bench, and the high-temperature chamber is equipped with a heating device.

7. The mechanical seal testing device according to claim 6, characterized in that, The high-temperature chamber is provided with an exhaust vent on the top, and an openable plug is provided at the exhaust vent.

8. The mechanical seal testing device according to claim 7, characterized in that, The mechanical seal testing device also includes an exhaust pipe, a spring, and a support plate. The exhaust pipe is located at the top of the high-temperature chamber and outside the exhaust hole. The diameter of the exhaust pipe is larger than the diameter of the exhaust hole. The inner wall of the exhaust pipe is provided with a moving groove extending along the height direction. The spring is located in the moving groove. One end of the support plate is connected to the plug, and the other end is connected to the end of the spring near the plug.

9. The mechanical seal testing device according to claim 8, characterized in that, The mechanical seal testing device also includes a push rod and a cover plate. One end of the push rod is connected to the side of the plug away from the high-temperature chamber, and the other end extends in the same direction as the exhaust pipe and is connected to the cover plate. The diameter of the cover plate is larger than the diameter of the exhaust pipe so as to cover the end of the exhaust pipe when the plug blocks the exhaust hole.

10. The mechanical seal testing device according to claim 1, characterized in that, The test piece includes a placement block and a detection element. The placement block has a test cavity, and the detection element is disposed within the test cavity.

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