Performance detection device and detection method of graphite material for mechanical seal

Abstract

The invention discloses a performance detection device and detection method of a graphite material for mechanical sealing, and relates to the technical field of graphite sealing ring performance detection.The technical scheme includes that the performance detection device comprises a detection table, a rotating mechanism is fixedly connected to the upper portion of the detection table, a connecting plate is arranged on the upper portion of the rotating mechanism, and a fixed shell is fixedly connected to the upper portion of the connecting plate; a third motor is arranged on the upper portion of the fixed shell, a worm is arranged at the output end of the third motor, worm wheels are connected to the two sides of the worm in a meshed mode, and the worm wheels are rotationally connected with the fixed shell. The second rack moves to drive the fixing plate to extend towards the two sides, so that the sealing ring is fixed internally, the sealing rings of different specifications and different inner diameters can be fixed through movement of the fixing plate, and the sealing ring fixing device can adapt to various specifications while the fixing effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of graphite sealing ring performance detection, and in particular to a performance detection device and a detection method for a graphite material for mechanical sealing. Background Art

[0002] The research and development background of the performance testing device for graphite materials for mechanical seals is mainly due to the precise demand for performance evaluation of graphite materials in mechanical seals. Graphite has been widely used in high-end mechanical sealing devices such as aircraft engines due to its excellent wear resistance, lubricity and thermal stability. However, the performance of graphite materials will directly affect the reliability and life of mechanical seals, so accurate detection of their performance is crucial. Traditional detection methods may have problems such as insufficient accuracy or complex operation, and cannot meet the high standards of modern industry for graphite material performance evaluation. Therefore, the development of a device that can accurately and efficiently detect the performance of graphite materials for mechanical seals is of great significance to ensure the quality and reliability of mechanical seals.

[0003] After searching, the Chinese patent number CN106931863B discloses a large metal sealing ring detection device, including a bottom plate, a base plate perpendicular to the bottom plate is provided on the bottom plate, two supporting wheels are provided on the outer side of the base plate, a vertical slide groove penetrating the base plate is provided at a position between the two supporting wheels on the base plate, a slider is provided in the slide groove, a clamping wheel is provided at the outer end of the slider, the clamping wheel is rotatably connected to the slider through a rotating shaft, a motor seat is provided at the lower end of the slider, a motor is provided on the motor seat, the shaft end of the motor is connected to the rotating shaft, a base is provided on the inner side of the base plate, a sliding rod is provided in the base, the sliding rod is slidably connected to the base, the lower end of the sliding rod is fixedly connected to the slider, a cross bar is provided at the upper end of the sliding rod, a micrometer head is provided at the outer end of the cross bar, a reset spring is provided at the position of the sliding rod between the slider and the base, an electric cylinder is provided on the bottom plate directly below the motor seat, and a support plate is provided at the shaft end of the electric cylinder. The present invention has the beneficial effects of high detection efficiency and high detection accuracy. Compared with the prior art, the Chinese patent number CN106931863B solves the problem that the prior art manually visually inspects the surface smoothness, and this detection method has large errors, low detection accuracy, requires measuring many sets of data, and has low measurement efficiency. Especially for large metal sealing rings with large diameters, it is difficult to find the diameter accurately with a vernier caliper, and the measurement error is very large.

[0004] However, in actual use, when the above device is used to perform performance testing on graphite metal composite sealing rings, it is difficult for the device to be adaptively adjusted for sealing rings of different sizes and heights, resulting in large deviations in the data obtained from the performance test and poor measurement results. Therefore, a performance testing device and method for graphite materials for mechanical seals are proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that when performing performance testing on graphite metal composite sealing rings, the device is difficult to adapt to sealing rings of different sizes and heights, resulting in large deviations in the data obtained from the performance testing and poor measurement results. A performance testing device and method for graphite materials for mechanical seals are proposed to solve the problem.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A performance detection device and detection method for graphite material for mechanical sealing, comprising a detection platform, wherein the upper portion of the detection platform is fixedly connected to a rotating mechanism, the upper portion of the rotating mechanism is provided with a connecting plate, the upper portion of the connecting plate is fixedly connected to a fixed housing, the upper portion of the fixed housing is provided with a third motor, the output end of the third motor is provided with a worm, both sides of the worm are meshingly connected to worm wheels, the worm wheel is rotationally connected to the fixed housing, the lower portion of the worm wheel is meshingly connected to a second rack, the second rack is fixedly connected to a fixed plate at a side away from the worm wheel, the upper portion of the connecting plate is fixedly connected to a placement groove, after the graphite sealing ring is placed on the upper portion of the placement groove, the third motor is started to drive the second rack to move to both sides, the movement of the second rack drives the fixed plate to move to both sides, and then fits with the inner ring of the sealing ring to fix the sealing ring;

[0008] Two adjustment shells are fixedly connected to the upper part of the detection platform, a first motor is arranged inside the adjustment shell, a second gear is arranged at the output end of the first motor, the second gear is meshingly connected with the third gear, the third gear is fixedly connected with the first gear on the side away from the adjustment shell, the first gear is meshingly connected with the first rack, the first rack is fixedly connected to the detection shell, the detection shell is slidably connected to the detection platform, a pressure sensor and a micrometer are arranged on the upper part of the detection shell, the first gear is driven to rotate by the first motor, the rotation of the first gear drives the meshing first rack to move, and then drives the detection shell to move up and down to adjust the detection position.

[0009] The above technical solution further includes:

[0010] A column is fixedly connected to the upper part of the detection platform, a cylinder is arranged on the top of the column, and a lower pressure plate is fixedly connected to the bottom of the cylinder.

[0011] The rotating mechanism drives the connecting plate to rotate, thereby driving the sealing ring placed on the upper part of the placement groove to rotate.

[0012] The rotating mechanism comprises a rotating shell fixedly connected to the upper part of the detection platform, a fourth motor is arranged inside the rotating shell, and a rotating assembly is arranged at the output end of the fourth motor.

[0013] The rotating assembly includes a sixth gear disposed at the output end of the fourth motor, the sixth gear is meshedly connected with a seventh gear, the seventh gear is rotationally connected to the rotating shell, and the seventh gear is fixedly connected to a connecting plate at a side away from the rotating shell.

[0014] Two adjusting mechanisms are symmetrically arranged on the upper part of the detection housing, and a pressure sensor and a micrometer are respectively arranged on one side of the two adjusting mechanisms.

[0015] The adjustment mechanism comprises a detection shell fixedly connected to the upper part of the detection shell, a second motor is arranged inside the detection shell, and an adjustment component is arranged at the output end of the second motor.

[0016] The adjustment component includes a fourth gear arranged at the output end of the second motor, the fourth gear is meshedly connected with a fifth gear, the fifth gear is rotationally connected to the detection housing, the fifth gear is threadedly connected with a threaded rod, and a pressure sensor and a micrometer are arranged on one side of the threaded rod.

[0017] A method for using a performance detection device for a graphite material for mechanical sealing, comprising the following steps:

[0018] Step 1: When in use, first place the graphite metal composite sealing ring on the upper part of the placement groove, then start the third motor, drive the fixing plates on both sides to move through the third motor, and limit the sealing ring from the inside of the sealing ring;

[0019] Step 2: After the sealing ring is fixed, start the first motor inside the adjustment housing, and the first motor drives the first gear to rotate, and the rotation of the first gear drives the first rack in meshing connection to move, thereby driving the detection housing fixedly connected to the first rack to move up and down, and according to the height of the sealing ring, adjust the position of the pressure sensor and the micrometer set on the detection housing to ensure that the pressure sensor and the micrometer can fully detect the sealing ring;

[0020] Step 3: Start the second motor, drive the threaded rod to move by the second motor, and adjust the position of the threaded rod so that the pressure sensor and the micrometer are in contact with the outer wall of the sealing ring;

[0021] Step 4: Start the rotating mechanism, drive the connecting plate to rotate through the rotating mechanism, and then drive the sealing ring to rotate, so that the pressure sensor and the micrometer can perform performance testing on the rotating sealing ring.

[0022] The present invention has the following beneficial effects:

[0023] 1. In the present invention, after the graphite metal composite sealing ring is placed on the placement groove, the third motor can be started, and the second racks on both sides can be driven to move by the third motor. The movement of the second rack drives the fixing plate to extend to both sides, thereby fixing the sealing ring inside. The sealing rings of different specifications and inner diameters can be fixed by the movement of the fixing plate, ensuring the fixing effect while being able to adapt to a variety of specifications. After the fixing is completed, the detection housing can be driven up and down by starting the first motor. By controlling the movement of the detection housing, the pressure sensor and the micrometer set on the detection housing can flexibly adjust the detection position according to the height of the sealing ring, thereby ensuring the detection effect of the pressure sensor and the micrometer surface on sealing rings of different heights.

[0024] 2. In the present invention, two adjusting mechanisms are provided on the upper part of the detection housing, through which the pressure sensor and the micrometer can be driven to move. By moving the pressure sensor and the micrometer so that they contact the surface of the sealing ring, the detection effect can be effectively guaranteed. The rotating mechanism can also drive the connecting plate to rotate, thereby driving the sealing ring fixed on the upper part of the connecting plate to rotate. Through the rotation of the sealing ring, the pressure sensor and the micrometer can perform performance detection on the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a performance detection device and a detection method for a graphite material for mechanical seal proposed by the present invention;

[0026] Figure 2 It is an overall top view of the device in the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the detection housing in the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of the regulating housing in the present invention;

[0029] Figure 5 It is a schematic diagram of the internal structure of the detection housing in the present invention;

[0030] Figure 6 It is a schematic diagram of the internal structure of the placement tank in the present invention;

[0031] Figure 7 It is a schematic diagram of the internal structure of the fixing plate in the present invention;

[0032] Figure 8 It is a schematic diagram of the internal structure of the rotating shell in the present invention.

[0033] In the figure: 1. detection table; 2. column; 3. cylinder; 4. lower pressure plate; 5. detection shell; 6. adjustment shell; 7. first gear; 8. first rack; 9. detection shell; 10. placement slot; 11. pressure sensor; 12. micrometer; 13. fixed plate; 14. fixed shell; 15. rotating shell; 16. first motor; 17. second gear; 18. third gear; 19. second motor; 20. fourth gear; 21. fifth gear; 22. threaded rod; 23. connecting plate; 24. third motor; 25. worm; 26. worm wheel; 27. second rack; 28. fourth motor; 29. ​​sixth gear; 30. seventh gear. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] like Figure 1-Figure 8 As shown, a performance detection device and detection method of graphite material for mechanical sealing, including a detection platform 1, a rotating mechanism is fixedly connected to the upper part of the detection platform 1, a connecting plate 23 is arranged on the upper part of the rotating mechanism, a fixed shell 14 is fixedly connected to the upper part of the connecting plate 23, a third motor 24 is arranged on the upper part of the fixed shell 14, a worm 25 is arranged at the output end of the third motor 24, a worm wheel 26 is meshingly connected to both sides of the worm 25, the worm wheel 26 is rotationally connected to the fixed shell 14, a second rack 27 is meshingly connected to the lower part of the worm wheel 26, a fixed plate 13 is fixedly connected to the side of the second rack 27 away from the worm wheel 26, a placement groove 10 is fixedly connected to the upper part of the connecting plate 23, after the graphite sealing ring is placed on the upper part of the placement groove 10, the third motor 24 is started to drive the second rack 27 to move to both sides, the movement of the second rack 27 drives the fixed plate 13 to move to both sides, and then fits with the inner ring of the sealing ring to fix the sealing ring.

[0037] Two adjustment shells 6 are fixedly connected to the upper part of the detection platform 1, and a first motor 16 is arranged inside the adjustment shell 6. A second gear 17 is arranged at the output end of the first motor 16, and the second gear 17 is meshingly connected to the third gear 18. The third gear 18 is fixedly connected to the first gear 7 away from the adjusting shell 6. The first gear 7 is meshingly connected to the first rack 8. The first rack 8 is fixedly connected to the detection shell 5, and the detection shell 5 is slidably connected to the detection platform 1. A pressure sensor 11 and a micrometer 12 are arranged on the upper part of the detection shell 5. The first motor 16 drives the first gear 7 to rotate, and the rotation of the first gear 7 drives the meshing first rack 8 to move, thereby driving the detection shell 5 to move up and down to adjust the detection position.

[0038] In this embodiment, after the graphite metal composite sealing ring is placed on the placement groove 10, the third motor 24 can be started, and the worm 25 can be driven to rotate by the third motor 24. The rotation of the worm 25 can drive the worm gear 26 meshing on both sides to rotate, and the rotation of the worm gear 26 can drive the second rack 27 to move. By controlling the movement of the second rack 27 on both sides, the fixed plate 13 fixedly connected to the second rack 27 can be driven to extend to both sides. The sealing ring can be fixed from the inside by moving the fixed plate 13, and the moving distance of the fixed plate 13 can also be controlled to fix sealing rings of different specifications and inner diameters, thereby ensuring the fixing effect of the sealing ring while being able to adapt to a variety of specifications.

[0039] After the fixation is completed, the first motor 16 is started, and the second gear 17 is driven to rotate by the first motor 16. The rotation of the second gear 17 drives the meshing third gear 18 to rotate, and the rotation of the third gear 18 can drive the fixedly connected first gear 7 to rotate. The rotation of the first gear 7 can drive the meshing first rack 8 to move, and then drive the detection housing 5 fixedly connected to the first rack 8 to move up and down. By controlling the movement of the detection housing 5, the pressure sensor 11 and the micrometer 12 arranged thereon can flexibly adjust the detection position according to the height of the sealing ring, thereby ensuring that the pressure sensor 11 and the micrometer 12 can fully detect the sealing ring, thereby improving the detection effect of the pressure sensor 11 and the micrometer 12.

[0040] Embodiment 2

[0041] like Figure 1-Figure 8As shown, a column 2 is fixedly connected to the upper part of the testing platform 1, a cylinder 3 is arranged on the top of the column 2, a lower pressure plate 4 is fixedly connected to the bottom of the cylinder 3, the rotating mechanism drives the connecting plate 23 to rotate, and then drives the sealing ring placed on the upper part of the placement groove 10 to rotate, the rotating mechanism includes a rotating shell 15 fixedly connected to the upper part of the testing platform 1, a fourth motor 28 is arranged inside the rotating shell 15, a rotating assembly is arranged at the output end of the fourth motor 28, the rotating assembly includes a sixth gear 29 arranged at the output end of the fourth motor 28, the sixth gear 29 is meshedly connected with the seventh gear 30, the seventh gear 30 is rotationally connected to the rotating shell 15, and the seventh gear 30 is fixedly connected to the connecting plate 23 on the side away from the rotating shell 15.

[0042] Two adjustment mechanisms are symmetrically arranged on the upper part of the detection housing 5, and a pressure sensor 11 and a micrometer 12 are respectively arranged on one side of the two adjustment mechanisms. The adjustment mechanism includes a detection shell 9 fixedly connected to the upper part of the detection shell 5, a second motor 19 is arranged inside the detection shell 9, and an adjustment component is arranged at the output end of the second motor 19. The adjustment component includes a fourth gear 20 arranged at the output end of the second motor 19, the fourth gear 20 is meshingly connected with a fifth gear 21, the fifth gear 21 is rotationally connected to the detection shell 9, the fifth gear 21 is threadedly connected with a threaded rod 22, and a pressure sensor 11 and a micrometer 12 are arranged on one side of the threaded rod 22.

[0043] In this embodiment, the fourth gear 20 can be driven to rotate by starting the second motor 19, and the rotation of the fourth gear 20 can drive the meshing fifth gear 21 to rotate, and the rotation of the fifth gear 21 can drive the threaded rod 22 to move, and the pressure sensor 11 and the dial gauge 12 can be driven to move through the threaded rod 22. The pressure sensor 11 and the dial gauge 12 can move to contact the surface of the sealing ring, which effectively ensures the detection effect. Subsequently, starting the fourth motor 28 can also drive the sixth gear 29 to rotate, and the rotation of the sixth gear 29 can drive the meshing seventh gear 30 to rotate, and the seventh gear 30 rotates. The movement can drive the fixedly connected connecting plate 23 to rotate, and then drive the placement groove 10 to rotate, so that the sealing ring fixedly arranged on the upper part of the placement groove 10 rotates synchronously, and the pressure sensor 11 and the micrometer 12 can detect the performance of the sealing ring through the rotation of the sealing ring. The pressure sensor 11 can determine whether there are cracks by detecting the pressure change on the surface of the sealing ring, thereby detecting its integrity, and the roundness of the sealing ring can be accurately determined by the degree of the micrometer 12. Finally, the detection housing 5 is controlled to move downward to expose the entire sealing ring, and then the cylinder 3 is started to drive the lower pressure plate 4 to press down, and the pressure resistance of the sealing ring can also be tested.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance testing device for graphite material for mechanical seal, comprising a testing platform (1), characterized in that: The detection platform (1) is fixedly connected to a rotating mechanism on the upper part, a connecting plate (23) is arranged on the upper part of the rotating mechanism, a fixed housing (14) is fixedly connected to the upper part of the connecting plate (23), a third motor (24) is arranged on the upper part of the fixed housing (14), a worm (25) is arranged at the output end of the third motor (24), a worm wheel (26) is meshingly connected to both sides of the worm wheel (25), the worm wheel (26) is rotationally connected to the fixed housing (14), and the worm wheel (25) is meshingly connected to the fixed housing (14). 6) The lower part is meshedly connected with a second rack (27), the second rack (27) is fixedly connected with a fixing plate (13) on the side away from the worm gear (26), the upper part of the connecting plate (23) is fixedly connected with a placement groove (10), after the graphite sealing ring is placed on the upper part of the placement groove (10), the third motor (24) is started to drive the second rack (27) to move to both sides, the movement of the second rack (27) drives the fixing plate (13) to move to both sides, and then fits with the inner ring of the sealing ring to fix the sealing ring; The upper part of the detection platform (1) is fixedly connected to two adjustment shells (6), the adjustment shell (6) is provided with a first motor (16), the output end of the first motor (16) is provided with a second gear (17), the second gear (17) is meshingly connected with a third gear (18), the third gear (18) is fixedly connected with a first gear (7) on the side away from the adjustment shell (6), the first gear (7) is meshingly connected with a first rack (8), the first rack (8) is fixedly connected to the detection shell (5), the detection shell (5) is slidably connected to the detection platform (1), the upper part of the detection shell (5) is provided with a pressure sensor (11) and a micrometer (12), the first motor (16) drives the first gear (7) to rotate, the first gear (7) drives the meshingly connected first rack (8) to move, and then drives the detection shell (5) to move up and down, so as to adjust the detection position.

2. The performance detection device of a graphite material for mechanical seal according to claim 1, characterized in that: The upper part of the detection platform (1) is fixedly connected to a column (2), the top of the column (2) is provided with a cylinder (3), and the bottom of the cylinder (3) is fixedly connected to a lower pressure plate (4).

3. The performance detection device of a graphite material for mechanical seal according to claim 1, characterized in that: The rotating mechanism drives the connecting plate (23) to rotate, thereby driving the sealing ring placed on the upper part of the placement groove (10) to rotate.

4. The performance detection device of a graphite material for mechanical seal according to claim 3, characterized in that: The rotating mechanism comprises a rotating shell (15) fixedly connected to the upper part of the detection platform (1), a fourth motor (28) is arranged inside the rotating shell (15), and a rotating assembly is arranged at the output end of the fourth motor (28).

5. The performance detection device of graphite material for mechanical seal according to claim 4, characterized in that: The rotating assembly comprises a sixth gear (29) arranged at the output end of the fourth motor (28), the sixth gear (29) being meshingly connected with a seventh gear (30), the seventh gear (30) being rotationally connected to the rotating housing (15), and a connecting plate (23) being fixedly connected to a side of the seventh gear (30) away from the rotating housing (15).

6. The performance detection device of a graphite material for mechanical seal according to claim 1, characterized in that: Two adjustment mechanisms are symmetrically arranged on the upper part of the detection housing (5), and a pressure sensor (11) and a micrometer (12) are respectively arranged on one side of the two adjustment mechanisms.

7. The performance detection device of graphite material for mechanical seal according to claim 6, characterized in that: The adjustment mechanism comprises a detection housing (9) fixedly connected to the upper part of the detection shell (5), a second motor (19) is arranged inside the detection housing (9), and an adjustment component is arranged at the output end of the second motor (19).

8. The performance detection device of graphite material for mechanical seal according to claim 7, characterized in that: The adjustment component comprises a fourth gear (20) arranged at the output end of the second motor (19), the fourth gear (20) being meshingly connected with a fifth gear (21), the fifth gear (21) being rotationally connected to the detection housing (9), the fifth gear (21) being threadedly connected with a threaded rod (22), and a pressure sensor (11) and a micrometer (12) being arranged on one side of the threaded rod (22).

9. The method for using the performance detection device for graphite material for mechanical seal according to claim 1, characterized in that: The following steps are involved: When in use, the graphite metal composite sealing ring is first placed on the upper part of the placement groove (10), and then the third motor (24) is started to drive the fixing plates (13) arranged on both sides to move, so as to limit the sealing ring from the inside of the sealing ring; Step 2: After the sealing ring is fixed, the first motor (16) inside the adjustment housing (6) is started, and the first motor (16) drives the first gear (7) to rotate, and the rotation of the first gear (7) drives the first rack (8) in meshing connection to move, thereby driving the detection housing (5) fixedly connected to the first rack (8) to move up and down, and adjusting the positions of the pressure sensor (11) and the micrometer (12) provided on the detection housing (5) according to the height of the sealing ring to ensure that the pressure sensor (11) and the micrometer (12) can fully detect the sealing ring; Step 3: starting the second motor (19), driving the threaded rod (22) to move by the second motor (19), and adjusting the position of the threaded rod (22) so that the pressure sensor (11) and the dial gauge (12) are in contact with the outer wall of the sealing ring; Step 4: Start the rotating mechanism, drive the connecting plate (23) to rotate through the rotating mechanism, and then drive the sealing ring to rotate, so that the pressure sensor (11) and the micrometer (12) can perform performance detection on the rotating sealing ring.

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