Magnetic sealing assembly tool clamp

Abstract

The magnetic sealing assembly tool clamp is suitable for testing the sealing performance of a graphite ring and comprises a first shell, a second shell, a motor and a testing assembly, the second shell is made of transparent materials, the first shell is provided with an oil inlet, the second shell is provided with an oil outlet, and the oil inlet is communicated with the oil outlet. The motor is installed at one end of the shell in a sealed mode, the second shell is installed at the other end of the shell, the testing assembly is installed on an output shaft of the motor, and a graphite ring is installed in the circumferential direction of the testing assembly and used for testing the sealing performance of the graphite ring. During testing, lubricating oil for testing is injected through the oil inlet, the sealing performance of the graphite ring is observed through the second shell, and the lubricating oil during testing is discharged through the oil outlet, so that the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sealing ring sealing test device, especially relates to a magnetic sealing assembly tool fixture. BACKGROUND

[0002] The magnetic force seal is mainly applied to the occasions with limited axial space, such as gear box, gearbox, aero-engine accessory transmission component and shaft end of helicopter transmission system, due to simple structure, good follow-up performance and low end face specific pressure and other characteristics. The magnetic force seal structure is composed of magnetic static ring, dynamic ring O ring, base and static ring O ring, the graphite ring is installed on the base, the traditional test mode is static pressure test in a closed environment, once the sealing ring leaks, the test cannot be stopped in time, and the oil leakage in the test process cannot be observed, so that the graphite ring sealing test efficiency is reduced. CONTENT

[0003] Therefore, the magnetic sealing assembly tool fixture solves the technical problem of low graphite ring sealing performance test efficiency caused by the structure of the prior art.

[0004] A magnetic sealing assembly tool fixture is suitable for testing the sealing performance of a graphite ring and comprises a first shell, a second shell, a motor and a test assembly, the second shell is made of transparent material, the first shell is provided with an oil inlet, the second shell is provided with an oil outlet, wherein,

[0005] One end of the shell is sealed to install the motor, the other end is sealed to install the second shell, the output shaft of the motor is installed with the test assembly, the circumference of the test assembly is installed with a graphite ring for testing the sealing performance of the graphite ring.

[0006] The test oil is filled through the oil inlet, and the sealing performance of the graphite ring is observed through the second shell, and the test oil is discharged through the oil outlet.

[0007] Preferably or optionally, the first shell is open at one end and is sealed and connected to the open end of the second shell through a partition plate, and the output shaft of the motor is sealed and installed at the other end.

[0008] Preferably or optionally, the side surface or the whole of the second shell is made of acrylic material for observing the sealing performance of the graphite ring.

[0009] Preferably or optionally, the first shell is provided with an oil inlet in the circumference, the second shell is provided with an oil outlet in the circumference, or the radial angle between the oil inlet and the oil outlet is 180 degrees.

[0010] Preferably or alternatively, the test assembly comprises a mounting head, a base, a cover plate, an experimental shaft and an assembly component, wherein,

[0011] The mounting head is fixedly installed on the output shaft and is used for axial assembly of the experimental shaft of different models to adapt to tests of graphite rings of different models.

[0012] The central region of the partition plate is provided with a first hole for assembly of the mounting head, and the size of the first hole is greater than the radial size of the mounting head.

[0013] The central region of the base is provided with a second hole, one end of the base is installed on the side of the partition plate away from the motor, the other end of the base is a free end and is provided with a mounting groove for sealing installation of the cover plate, and the central region of the cover plate is provided with a test hole.

[0014] Preferably or alternatively, the size of the test hole is greater than the size of the experimental shaft and is less than the size of the second hole.

[0015] Preferably or alternatively, the assembly component comprises a dynamic ring O-ring, a mounting seat, a magnetic static ring and a static ring O-ring, the inner annular surface of the mounting seat is provided with a first assembly groove and a second assembly groove in the axial direction, the outer axial surface of the magnetic static ring is provided with a third assembly groove, the second assembly groove is used for installation of the graphite ring, and the magnetic static ring is used for close adsorption of the mounting seat, wherein,

[0016] The mounting seat is installed near the port position of the experimental shaft, the first assembly groove is used for installation of the dynamic ring O-ring, and the dynamic ring O-ring is used for sealing of the mounting seat and the experimental shaft.

[0017] The magnetic static ring is installed in the test hole and at the port position of the experimental shaft, the third assembly groove is used for installation of the static ring O-ring, and the static ring O-ring is used for sealing of the magnetic static ring and the inner annular surface of the test hole.

[0018] After the magnetic static ring is closely adsorbed to the mounting seat, sealing of the magnetic static ring and the mounting seat is realized through the graphite ring, the test oil is continuously filled through the oil inlet, the leakage amount of the test oil in the second shell is observed, and the test of the sealing performance of the graphite ring is completed.

[0019] The technical beneficial effects of the utility model are as follows:

[0020] The utility model discloses a structure, motor drives test subassembly rotation, test subassembly drives graphite ring rotation, realize under the condition of rotation and carry out graphite ring seal test, and the second casing is made of transparent material, the observation of operator to the leakage condition of oil is convenient, if the leakage is too big, test test is terminated in time, can improve the efficiency of graphite ring seal test. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present disclosure, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a schematic view of the overall structure.

[0023] Figure 2 It is a front view of the sectional view.

[0024] Figure 3 It is Figure 2 It is an enlarged view of A.

[0025] Figure 4 It is a schematic view of the assembly component, wherein,

[0026] 1, motor; 2, first casing; 21, oil inlet; 3, partition plate; 4, second casing; 5, graphite ring; 61, mounting head; 62, base; 63, cover plate; 64, experimental shaft; 71, dynamic ring O ring; 72, mounting seat; 73, magnetic static ring; 74, static ring O ring. DETAILED DESCRIPTION

[0027] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0028] The embodiments of the present disclosure will be described in detail below with reference to the drawings. The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0029] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0030] like Figures 1 to 4 The magnetic sealing assembly fixture shown is suitable for testing the sealing performance of a graphite ring 5. It includes a first housing 2, a second housing 4, a motor 1, and a testing assembly. The second housing 4 is made of a transparent material, such as acrylic, to facilitate observation of oil leakage by the operator. The first housing 2 has an oil inlet 21 connected to an external oil supply device. The second housing 4 has an oil outlet connected to a recovery tank. Thus, the first housing 2 is the high-pressure side, and the second housing 4 is the low-pressure side. The motor 1 is sealed and mounted at one end of the housing, and the second housing 4 is mounted at the other end. The testing assembly is mounted on the output shaft of the motor 1, and a graphite ring 5 is circumferentially mounted on the testing assembly for testing the sealing performance of the graphite ring 5. Test oil is poured into the first housing 2 through the oil inlet 21, and the sealing performance of the graphite ring 5 is observed through the second housing 4. The oil used in the test is discharged through the oil outlet. Preferably...

[0031] The second housing 4 has an open end structure, the first housing 2 has an open end and is sealed to the open end of the second housing 4 through the partition plate 3, and the output shaft of the motor 1 is sealed and installed at the other end.

[0032] Furthermore, the first housing 2 is provided with an oil inlet 21 in the circumferential direction, and the second housing 4 is provided with an oil outlet in the circumferential direction. Alternatively, the radial angle between the oil inlet 21 and the oil outlet is 180°, which facilitates the recovery of lubricating oil and increases the pressure in the first housing 2 to test the sealing performance of the graphite ring 5.

[0033] As a specific implementation method provided in this case, the test assembly includes a mounting head 61, a base 62, a cover plate 63, a test shaft 64, and an assembly assembly, wherein...

[0034] A mounting head 61 is fixedly mounted on the output shaft of motor 1. The mounting head 61 is used for axial assembly of different types of experimental shafts 64, such as T-shaped cylinders, to accommodate the testing of different types of graphite rings 5. An assembly assembly is installed at the end position adjacent to the experimental shaft 64. The circumferential direction of the assembly assembly is used for the installation of graphite rings 5.

[0035] The central region of the partition plate 3 is provided with a first hole, which is convenient for assembling the mounting head 61, and the size of the first hole is larger than the radial size of the mounting head 61;

[0036] The central region of the machine base 62 is provided with a second hole, one end of the machine base 62 is mounted on the side of the partition plate 3 away from the motor 1, and the other end of the machine base 62 is a free end and is provided with a mounting groove for sealingly mounting a cover plate 63, the central region of the cover plate 63 is provided with a test hole, and the sealing performance of the graphite ring 5 is tested by observing the sealing degree of the graphite ring 5 to the test hole. It should be noted that the size of the test hole is larger than the size of the experimental shaft 64 and smaller than the size of the second hole, which not only meets the requirement of convenient assembly, but also meets the requirement of testing. Specifically, the assembly component includes a dynamic ring O-ring 71, a mounting seat 72, a magnetic static ring 73, and a static ring O-ring 74. The inner ring surface of the mounting seat 72 is provided with a first assembly groove and a second assembly groove in the axial direction, and the outer shaft of the magnetic static ring 73 is provided with a third assembly groove. The second assembly groove is used for the installation of the graphite ring 5, and the magnetic static ring 73 is used for the close adsorption of the mounting seat 72.

[0037] The mounting seat 72 is installed at the port position adjacent to the experimental shaft 64, the first assembly groove is used for the installation of the dynamic ring O-ring 71, and the dynamic ring O-ring 71 is used for the sealing of the mounting seat 72 and the experimental shaft 64;

[0038] The magnetic static ring 73 is installed in the test hole at the port position of the experimental shaft 64, the third assembly groove is used for the installation of the static ring O-ring 74, and the static ring O-ring 74 is used for the sealing of the magnetic static ring 73 and the inner ring surface of the test hole;

[0039] After the magnetic static ring 73 closely adsorbs the mounting seat 72, the sealing of the magnetic static ring 73 and the mounting seat 72 is realized through the graphite ring 5, the test oil is continuously filled through the oil inlet 21, and the leakage amount of the test oil in the second shell 4 is observed to complete the test of the sealing performance of the graphite ring 5. Compared with the traditional mechanical seal, the magnetic graphite seal cancels the spring element and replaces the spring force provided by the mechanical seal with magnetic force to keep the main sealing surface in close contact by relying on the magnetic force provided by the magnetic static ring 73. Compared with the spring, the end face closing force provided by the magnetic force is more uniform, the sealing performance is better, and the influence of the vibration and deflection of the rotating shaft is smaller. The dynamic ring O-ring serves as a secondary seal, which not only realizes axial secondary sealing, but also provides axial compensation through the floating of the dynamic ring O-ring in the groove after the graphite ring 5 is worn out.

[0040] Further, the radial dimension of the mounting seat 72 is smaller than the radial dimension of the test hole, and a second assembly groove is arranged on the side of the mounting seat 72 close to the magnetic static ring 73, so as to meet the design of the test. It should be pointed out that the magnetic static ring 73 is adsorbed to the mounting seat 72 by magnetic force, but there is a gap, therefore, the gap is sealed by the graphite ring 5, and in the test, once the performance of the graphite ring 5 is not up to the standard, the leaked lubricating oil in the second shell 4 will flow into, and can be observed through the second shell 4, so as to improve the sealing test efficiency of the sealing ring.

[0041] In the above, one end of the test shaft protrudes out of the test hole, so as to meet the requirement of convenient installation.

[0042] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A magnetic seal assembly fixture suitable for testing the performance of a graphite ring seal, characterized by, The utility model provides a test device for graphite ring sealing performance, which comprises a first shell, a second shell, a motor and a test assembly, the second shell is made of transparent material, an oil inlet is arranged on the first shell, an oil outlet is arranged on the second shell, wherein, one end of the shell is sealedly installed with the motor, the other end is installed with the second shell, an output shaft of the motor is installed with the test assembly, a graphite ring is installed in the circumference of the test assembly, and the sealing performance of the graphite ring is tested; test oil is filled in through the oil inlet, and the sealing performance of the graphite ring is observed through the second shell, and the test oil is discharged through the oil outlet.

2. The magnetic seal assembly tooling fixture of claim 1, wherein, One end of the second shell is provided with an open structure, one end of the first shell is open and sealedly connected with the open end of the second shell through a partition plate, and the other end is sealedly installed with the output shaft of the motor.

3. The magnetic seal assembly tooling fixture of claim 2, wherein, The side surface or the whole of the second shell is made of acrylic material, which is used for observing the sealing performance of the graphite ring.

4. The magnetic seal assembly tooling fixture of claim 2, wherein, The first shell is provided with an oil inlet in the circumference, the second shell is provided with an oil outlet in the circumference, or the radial included angle between the oil inlet and the oil outlet is 180 degrees.

5. The magnetic seal assembly tooling fixture of claim 2, wherein, The test assembly comprises a mounting head, a base, a cover plate, an experimental shaft and an assembly assembly, wherein, the output shaft is fixedly installed with the mounting head, the mounting head is used for the axial assembly of the experimental shaft of different models to adapt to the test of graphite rings of different models, the assembly assembly is installed at the position of the end of the experimental shaft, and the circumference of the assembly assembly is used for the installation of the graphite ring; the central region of the partition plate is provided with a first hole, the assembly of the mounting head is facilitated, and the size of the first hole is greater than the radial size of the mounting head; the central region of the base is provided with a second hole, one end of the base is installed on the side of the partition plate away from the motor, the other end of the base is a free end and is provided with a mounting groove, the mounting groove is used for sealingly installing the cover plate, the central region of the cover plate is provided with a test hole, the sealing degree of the test hole is observed through the graphite ring to test the sealing performance of the graphite ring.

6. The magnetic seal assembly tooling fixture of claim 5, wherein, The size of the test hole is greater than the size of the experimental shaft and smaller than the size of the second hole.

7. The magnetic seal assembly tooling fixture of claim 5, wherein, The assembly assembly comprises a dynamic ring O ring, a mounting seat, a magnetic static ring and a static ring O ring, the inner ring surface of the mounting seat is axially provided with a first assembly groove and a second assembly groove, the outer axial surface of the magnetic static ring is provided with a third assembly groove, the second assembly groove is used for the installation of the graphite ring, and the magnetic static ring is used for the close adsorption of the mounting seat, wherein, the mounting seat is installed at the port position of the experimental shaft, the first assembly groove is used for installing the dynamic ring O ring, and the dynamic ring O ring is used for sealing the mounting seat and the experimental shaft; the magnetic static ring is installed in the test hole and at the port position of the experimental shaft, the third assembly groove is used for installing the static ring O ring, and the static ring O ring is used for sealing the magnetic static ring and the inner ring surface of the test hole; after the magnetic static ring closely adsorbs the mounting seat, the sealing of the magnetic static ring and the mounting seat is realized through the graphite ring, test oil is continuously filled in through the oil inlet, the leakage of the test oil in the second shell is observed, and the test of the sealing performance of the graphite ring is completed.

8. The magnetic seal assembly tooling fixture of claim 7, wherein, The radial size of the mounting seat is smaller than the radial size of the test hole.

9. The magnetic seal assembly tooling fixture of claim 7, wherein, The second assembling groove is arranged on the side of the mounting base close to the magnetic static ring.

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