Device and method for detecting sealing performance of sealing ring

Abstract

The present application relates to sealing detection device technical field, provide a kind of sealing ring sealing performance detection device and detection method, detection device includes: fixed tool, annular, and fixed tool extends at least a pair of annular legs towards its center direction;Rotary tool, set in fixed tool close to its center side, and rotary tool and adjacent annular leg form oil cavity;Cover plate, set up a pair, a pair of cover plate is respectively set in the axial direction of fixed tool two sides, and the cover plate of each side with fixed tool, rotary tool form sealing ring accommodating cavity;Each sealing ring accommodating cavity is communicated with oil cavity.The present application is formed by rotary tool and the two annular legs of fixed tool oil cavity, the cover plate of each side with fixed tool, rotary tool form sealing ring accommodating cavity, and sealing ring accommodating cavity is communicated with oil cavity, rotary tool is rotated relative to fixed tool, simulates the rotation of wind turbine main shaft bearing, can simultaneously directly detect the sealing performance of two sealing rings.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing detection device, and particularly relates to a sealing ring sealing performance detection device and a detection method. BACKGROUND

[0002] The main shaft bearing sealing ring of a wind turbine is widely used for sealing of lubricating grease and lubricating oil of the main bearing of the wind turbine. Since the diameter of the main shaft bearing sealing ring is large, the manufacturing difficulty is high. Moreover, since the use environment of the large wind power main shaft bearing sealing ring is mostly in the air and the field, the working condition is complex and harsh, and therefore, the sealing performance of the large wind power main shaft bearing sealing ring has high requirements.

[0003] In the prior art, bearing grease leakage is a common problem in the industry. Different solutions are provided for the problem of grease leakage, such as changing the material, increasing the interference amount, and the like for detection test.

[0004] However, the current test of the sealing ring in the industry can only detect the performance of a single sealing ring, and cannot directly compare the sealing performance of different sealing rings. SUMMARY

[0005] The present application provides a sealing ring sealing performance detection device and a detection method, which can solve the defect that the test device in the prior art can only detect the sealing performance of a single sealing ring of the main bearing of the wind turbine at a time, and can directly compare the sealing performance of different sealing rings.

[0006] The present application provides a sealing ring sealing performance detection device, which comprises:

[0007] A fixed tool in a circular ring type, and at least one pair of annular legs extending from the fixed tool to the center thereof;

[0008] A rotating tool rotatably arranged on one side of the fixed tool close to the center thereof, and the rotating tool and the two annular legs form an oil cavity;

[0009] A cover plate arranged in a pair, and the cover plates are arranged on both sides of the axial direction of the fixed tool, and the cover plates on each side and the fixed tool and the rotating tool form a sealing ring accommodating cavity; and each sealing ring accommodating cavity is in communication with the oil cavity.

[0010] According to the sealing ring sealing performance detection device provided by the present application, an eccentric device is further arranged on the outside of the fixed tool, and the eccentric device is used for adjusting the offset distance of the center of the fixed tool relative to the center of the rotating tool, so as to adjust the size of the sealing ring accommodating cavity.

[0011] The utility model provides a sealing ring sealing performance's detection device, the fixed tooling is provided with the waist type hole on, and the eccentric device includes:

[0012] Base, fixedly arranged;

[0013] Jacks, through the base and the free end of the jacks and the outside of the fixed tooling abut;

[0014] First fastener, through the waist type hole, and the first fastener is used to fasten and fix the fixed tooling and the base.

[0015] The utility model provides a sealing ring sealing performance's detection device, the eccentric device still includes:

[0016] Scale, set up on the base, and the scale is arranged in parallel with the jacks.

[0017] The utility model provides a sealing ring sealing performance's detection device, the rotating tooling includes:

[0018] Connecting ring plate, for connecting with driving device;

[0019] Sealing ring plate, with the connecting ring plate is connected, and the sealing ring plate with the cover plate, the fixed tooling surrounds the sealing ring accommodating cavity.

[0020] The utility model provides a sealing ring sealing performance's detection device, the rotating tooling still includes a plurality of rib plates, a plurality of the rib plate evenly distributes in the circumferential side of the connecting ring plate, and one side of each the rib plate is connected with the connecting ring plate, and the other side is connected with the sealing ring plate.

[0021] The utility model provides a sealing ring sealing performance's detection device still includes driving device and oil injection component, the output of driving device is connected with the rotating tooling, and the oil injection component is set up on the fixed tooling, and the oil injection component is connected with the oil chamber.

[0022] The utility model provides a sealing ring sealing performance's detection device still includes a plurality of support components, distributes in the circumferential side of the cover plate, and one side of each the support component is connected with the cover plate, and the other side of the support component is used to limit the rotating tooling.

[0023] The utility model also provides a wind turbine sealing ring sealing performance's detection method, including steps:

[0024] Two sealing rings are placed in the sealing ring accommodating cavity respectively;

[0025] Control rotating tooling rotation, simulate the rotation of the main shaft bearing;

[0026] Observe whether the two sealing ring accommodating cavities leak oil to respectively detect the sealing performance of the two sealing rings.

[0027] The detection method for sealing performance of a sealing ring of a wind turbine provided by the application further comprises the following steps:

[0028] The sealing performance of the sealing ring is simulated under different working conditions by adjusting the size of the sealing ring accommodating cavity to achieve different compression amounts of the sealing ring.

[0029] The detection device for sealing performance of a sealing ring provided by the application comprises an oil cavity surrounded by the two annular supporting legs of the fixed tool and the rotating tool, the sealing ring accommodating cavity surrounded by the fixed tool, the rotating tool and the cover plate on each side, and the oil cavity and the sealing ring accommodating cavity are communicated, the sealing ring can be placed in the sealing ring accommodating cavity, the rotating tool rotates relative to the fixed tool to simulate the rotation of the main shaft bearing of the wind turbine, and the sealing performance of the two sealing rings can be directly detected at the same time.

[0030] The detection method for sealing performance of a sealing ring of a wind turbine provided by the application has the advantages of the detection device for sealing performance of a sealing ring as described above. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a structural schematic view of the detection device for sealing performance of a sealing ring provided by the application;

[0033] Figure 2 is a front view of the detection device for sealing performance of a sealing ring provided by the application;

[0034] Figure 3 is a sectional view of B-B in the detection device for sealing performance of a sealing ring provided by the application; Figure 2

[0035] Figure 4 is an enlarged schematic view of A in the detection device for sealing performance of a sealing ring provided by the application; Figure 2

[0036] Figure 5 is a side view of the detection device for sealing performance of a sealing ring provided by the application;

[0037] Reference signs:

[0038] ​​1, fixed tooling; 2, rotating tooling; 21, connecting ring plate; 22, sealing ring plate; 23, rib plate; 3, annular support; 4, cover plate; 5, sealing ring accommodating cavity; 6, oil cavity; 7, eccentric device; 71, base; 711, mounting frame; 712, mounting platform; 713, locking nut; 72, ejector rod; 73, first fastener; 74, scale; 8, oil injection assembly; 9, support assembly; 10, sealing ring; 11, second fastener; 12, first anti-rotation plate; 13, second anti-rotation plate. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] The following will be described below Figures 1 to 5 The detection device for the sealing performance of the sealing ring of the present application.

[0042] As Figure 1 , Figure 2 and Figure 3As shown, the application provides a sealing ring sealing performance detection device, which comprises a fixed tool 1, a rotating tool 2 and a cover plate 4. The fixed tool 1 is in the shape of a ring, and at least one pair of annular legs 3 extends from the fixed tool 1 to its center. The rotating tool 2 is rotatably arranged on the side of the fixed tool 1 close to its center, i.e. the inner side of the fixed tool 1. The rotating tool 2 and the two annular legs 3 form an oil cavity 6, and grease or lubricating oil can be placed in the oil cavity 6. The rotating tool 2 can be connected to the power output end of any driving device during the detection process to realize the rotation of the rotating tool 2. The cover plate 4 is provided with a pair of cover plates 4 arranged on both sides of the fixed tool 1 in the axial direction, and each cover plate 4 on each side forms a sealing ring accommodating cavity 5 with the fixed tool 1 and the rotating tool 2. Each sealing ring accommodating cavity 5 is in communication with the oil cavity 6. Among them, the sealing ring accommodating cavity 5 is used to accommodate the sealing ring 10. During use, the rotating tool 2 rotates relative to the fixed tool 1 to simulate the rotation of the main shaft bearing of the wind turbine generator set, and the sealing performance of the two sealing rings 10 can be directly detected at the same time.

[0043] Among them, the two sealing rings can be different brands, can be different heat treatment processes of the same brand, and can also be different oil immersion depths of the same brand.

[0044] In addition, the distance between the annular leg 3 and the edge of the fixed tool 1 is about one fourth of the width of the fixed tool 1, so that the fixed tool 1, the rotating tool 2 and the cover plate 4 form an oil cavity 6 with a suitable space and a sealing ring accommodating cavity 5 with a suitable space to simulate the real situation of the main bearing of the wind turbine generator set.

[0045] Moreover, the size of the fixed tool 1 and the rotating tool 2 is designed to be equivalent to the size of the main shaft bearing of the wind turbine generator set, so that full-size testing can be realized to simulate the real situation of the sealing ring of the main bearing of the wind turbine generator set. Compared with the scaling test in the prior art, the sealing ring sealing performance detection device provided by the application can better reflect the real performance of the sealing ring.

[0046] In an embodiment of the application, an eccentric device 7 is further included, which is arranged on the outside of the fixed tool 1, and the eccentric device 7 can adjust the position of the fixed tool 1 in the radial direction relative to the rotating tool 2, i.e. the eccentric device 7 is used to adjust the offset distance of the center of the fixed tool 1 relative to the center of the rotating tool 2 to adjust the size of the sealing ring accommodating cavity 5 to realize different compression amounts of the sealing ring, so as to simulate the operating state of the sealing ring under different working conditions.

[0047] As Figure 4As shown in the figure, in one embodiment of the present application, the fixed tool 1 is provided with a waist-shaped hole, and the eccentric device 7 comprises a base 71, a top rod 72 and a first fastener 73. The base 71 is fixedly arranged and has a mounting platform 712 arranged through a mounting bracket 711. The base 71 can be fixed to any fixed main platform. The top rod 72 penetrates the mounting platform 712 and the free end of the top rod 72 abuts against the outer side of the fixed tool 1. A locking nut 713 is further included, which is sleeved on the outer periphery of the top rod 72 and arranged at the bottom of the mounting platform 712, so as to realize different compression amounts of the top rod 72 greater than the fixed tool. In order to ensure the stable adjustment amount of the top rod 72 to the fixed tool 1, generally, two top rods 72 are arranged in parallel. The first fastener 73 penetrates the waist-shaped hole and is used to fasten and fix the fixed tool 1 with the adjusted compression amount and the base 71. The compression amount of the sealing ring 10 is determined by adjusting the screwing depth of the top rod 72.

[0048] In addition, in order to prevent the friction between the fixed tool 1 and the rotating tool 2 from being too large, and to avoid the fixed tool 1 from rotating with the rotating tool 2, the two sides of the base 71 can be respectively connected with a first anti-rotation plate 12 and a second anti-rotation plate 13, so as to ensure that the fixed tool 1 and the eccentric device 7 remain fixed during the detection process, thereby improving the detection effect.

[0049] As shown in the figure, Figure 3 In one embodiment of the present application, the eccentric device 7 further comprises a scale 74 arranged on the base 71 and arranged in parallel with the top rod 72. The scale 74 is used to measure the interference amount of the sealing ring 10.

[0050] As shown in the figure, Figure 1 and Figure 2 In one embodiment of the present application, the rotating tool 2 comprises a connecting ring plate 21 connected with a driving device. As shown in the figure, Figure 1 The connecting ring plate 21 can be connected through the second fastener 11. In order to ensure the good fixing effect of the connecting ring plate 21 and the driving device, a plurality of second fasteners 11 are arranged, and the plurality of second fasteners 11 are distributed on the circumferential side of the connecting ring plate 21. A sealing ring plate 22 is connected with the connecting ring plate 21, and the sealing ring plate 22 and the cover plate 4, the fixed tool 1 form a sealing ring accommodating cavity 5. The sealing ring plate 22 and the annular leg 3 form an oil cavity 6.

[0051] It should be noted that the surface treatment of the rotating tool 2 is consistent with the surface treatment of the wind turbine bushing, so as to keep the movement state of the sealing ring 10 consistent with the actual state.

[0052] As shown in the figure, Figure 1As shown in the figure, in one embodiment of the present application, the rotating tool 2 further comprises a plurality of webs 23, which are evenly distributed on the circumferential side of the connecting ring plate 21, and one side of each web 23 is connected with the connecting ring plate 21 and the other side is connected with the sealing ring plate 22. The provision of the webs 23 can increase the stability of the connection between the connecting ring plate 21 and the sealing ring plate 22, wherein the connection between the web 23 and the connecting ring plate 21 and the connection between the web 23 and the sealing ring plate 22 can be welding or other structural forms of fixed connection, as long as it can ensure the stability of the connection.

[0053] As shown in the figure, Figure 2 and Figure 5 As shown in the figure, in one embodiment of the present application, the rotating tool 2 further comprises a plurality of webs 23, which are evenly distributed on the circumferential side of the connecting ring plate 21, and one side of each web 23 is connected with the connecting ring plate 21 and the other side is connected with the sealing ring plate 22. The provision of the webs 23 can increase the stability of the connection between the connecting ring plate 21 and the sealing ring plate 22, wherein the connection between the web 23 and the connecting ring plate 21 and the connection between the web 23 and the sealing ring plate 22 can be welding or other structural forms of fixed connection, as long as it can ensure the stability of the connection.

[0054] The oil injection assembly 8 is arranged on the fixed tool 1, and the oil injection assembly 8 is in communication with the oil cavity, and the oil injection assembly 8 is used to add grease or lubricating oil into the oil cavity 6. Specifically, the oil injection assembly 8 can include an oil injection pipe and an oil pressure valve, and the oil pressure valve is used to control the pressure of the oil injection. In addition, in order to facilitate oil injection, two or more oil injection assemblies 8 can be arranged, and the plurality of oil injection assemblies 8 are evenly distributed on the fixed tool 1.

[0055] It should be noted that, in order to reduce the oil leakage risk occurring at the oil injection assembly 8, the number of oil injection assemblies 8 is usually not too much, and two or three is appropriate.

[0056] In one embodiment of the present application, a plurality of support assemblies 9 are further included, which are distributed on the peripheral side of the cover plate 4, and one side of each support assembly 9 is connected with the cover plate 4, and the other side of the support assembly 9 is used for limiting the rotating tool 2. Before the sealing performance detection device and the driving device are installed, the rotating tool 2 and the fixed tool 1 have no connection relationship, when the rotating tool 2 and the fixed tool 1 are integrally installed on the driving device, the rotating tool 2 will move due to the action of gravity. In order to ensure that the rotating tool 2 and the fixed tool 1 can be relatively stationary, the rotating tool 2 and the cover plate 4 are suspended together by the support assembly 9, and since the cover plate 4 is relatively stationary with the fixed tool 1, the rotating tool 2 and the fixed tool 1 can be kept relatively stationary before installation by the support assembly 9, which facilitates unified installation. After the rotating tool 2 is installed on the driving device and the fixed tool 1 is installed at the specified position, the support assembly 9 is removed to ensure that the rotating tool 2 can freely rotate with the driving device, while the cover plate 4 and the fixed tool 1 remain stationary.

[0057] Wherein, before eccentric device 7 eccentricity adjustment, need to remove the first fastener 73 and support assembly 9, adjust the locking nut 713 of bottom top rod 72, make the scale value of scale 74 with base 71 alignment, before eccentricity adjustment, draw reference line on base 71 through scale, draw reference line on base through steel ruler along scale connecting plate in another direction, when eccentricity adjustment, top rod 72 adopts diagonal adjustment mode, after adjustment, the relative position of tool and reference line does not change. After adjustment, lock the nut of top rod 72.

[0058] The installation process of the sealing performance detection device provided by the present application is as follows: the fixed tool 1 is hoisted to the platform area, the two sealing rings are respectively placed at the sealing ring accommodating cavities 5, the cover plates 4 are installed, and the two cover plates 4 are respectively installed on the two sides of the fixed tool 1; then a layer of lubricating oil is applied on the installation surface of the fixed tool 1, the rotating tool 2 is placed on the inner side of the fixed tool 1; and the support assembly 9 is used to bolt the rotating tool 2 and the cover plate at the end surface away from the gear box, so that the sealing body is installed.

[0059] Then the sealing body is installed on the driving device, the fixed tool 1 is fixed on the gear box body through the first fastener 73, the rotating tool 2 is fixed on the low-speed end of the gear box through the second fastener 11, and the assembly is completed.

[0060] The sealing performance detection device of the sealing ring provided by the application can set different eccentric amounts, different submergence heights, different cavity pressures, and different materials on the surface of the rotating tool 2, and test the sealing performance of the sealing ring 10 under the combined working conditions, and can also compare the sealing effects of sealing rings of different brands.

[0061] The sealing performance detection method of the sealing ring is described, and the sealing performance detection method of the wind turbine sealing ring described below can be correspondingly referred to the sealing performance detection device described above.

[0062] Another aspect of the embodiment of the application is to provide a sealing performance detection method of a wind turbine sealing ring, which utilizes the sealing performance detection device of any one of the above embodiments, and comprises the following steps:

[0063] S100, the two sealing rings 10 are respectively placed in the sealing ring accommodating cavities 5;

[0064] S200, the rotating tool 2 is rotated to simulate the rotation of the main shaft bearing;

[0065] S300, whether the two sealing ring accommodating cavities 5 leak oil is observed to detect the sealing performance of the two sealing rings 10 respectively.

[0066] In one embodiment of the application, the following step is further included:

[0067] The size of the sealing ring accommodating cavity 5 is adjusted to achieve different compression amounts of the sealing ring 10, and the running state of the sealing ring 10 under different working conditions is simulated.

[0068] The sealing performance detection method of the wind turbine sealing ring provided by the application can simulate the working state of the sealing ring under different loads, compare the sealing effects of different types of sealing rings, compare different oil immersion depths, and compare the influence of different sealing ring brands, different rotating shaft materials and heat treatment processes on the sealing performance of the sealing ring.

[0069] In the description of the embodiments of the application, it should be noted that unless otherwise specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0070] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "aspects", "specific aspects", or "some aspects" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or aspect are included in at least one embodiment or aspect of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or aspect. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or aspects. In addition, those skilled in the art can combine and combine the different embodiments or aspects described in the specification and the features of the different embodiments or aspects without contradiction, and the combination.

[0071] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for testing the sealing performance of a sealing ring, characterized in that, include: The fixing fixture (1) is circular in shape, and the fixing fixture (1) extends at least one pair of annular legs (3) towards its center. The rotating fixture (2) is rotatably set on the side of the fixed fixture (1) near its center, and the rotating fixture (2) and the two adjacent annular support legs (3) form an oil cavity (6). A pair of cover plates (4) are provided, and the pair of cover plates (4) are respectively provided on both sides of the fixed tooling (1) in the axial direction, and the cover plate (4) on each side, together with the fixed tooling (1) and the rotating tooling (2), forms a sealing ring receiving cavity (5); each sealing ring receiving cavity (5) is connected to the oil cavity (6); It also includes an eccentric device (7), which is disposed on the outside of the fixed fixture (1) and is used to adjust the offset distance of the center of the fixed fixture (1) relative to the center of the rotating fixture (2) to adjust the size of the sealing ring receiving cavity (5); and a first anti-rotation plate (12) and a second anti-rotation plate (13) are provided between the eccentric device (7) and the fixed fixture (1).

2. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The fixed fixture (1) is provided with a waist-shaped hole, and the eccentric device (7) includes: Base (71), fixed installation; A push rod (72) passes through the base (71) and the free end of the push rod (72) abuts against the outside of the fixing fixture (1); The first fastener (73) passes through the waist-shaped hole and is used to fasten the fixing fixture (1) and the base (71).

3. The device for testing the sealing performance of a sealing ring according to claim 2, characterized in that, The eccentric device (7) further includes: A scale (74) is set on the base (71), and the scale (74) is set parallel to the top rod (72).

4. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, The rotary tooling (2) includes: A connecting ring plate (21) is used to connect to the drive unit; The sealing ring plate (22) is connected to the connecting ring plate (21), and the sealing ring plate (22), the cover plate (4), and the fixing fixture (1) form the sealing ring receiving cavity (5).

5. The device for testing the sealing performance of a sealing ring according to claim 4, characterized in that, The rotating tooling (2) also includes a plurality of stiffeners (23), which are evenly distributed around the periphery of the connecting ring plate (21), and one side of each stiffener (23) is connected to the connecting ring plate (21), and the other side is connected to the sealing ring plate (22).

6. The device for testing the sealing performance of a sealing ring according to claim 1, characterized in that, It also includes a drive device and an oil injection assembly (8). The output end of the drive device is connected to the rotating fixture (2). The oil injection assembly (8) is disposed on the fixed fixture (1) and is connected to the oil cavity.

7. The device for testing the sealing performance of a sealing ring according to any one of claims 1-6, characterized in that, Also includes: Multiple support components (9) are distributed around the periphery of the cover plate (4), and one side of each support component (9) is connected to the cover plate (4), while the other side of the support component (9) is used to limit the rotation tool (2).

8. A method for testing the sealing performance of a wind turbine sealing ring, using the sealing performance testing device for the sealing ring as described in any one of claims 1 to 7, characterized in that, Including the following steps: Place the two sealing rings (10) into the sealing ring receiving cavity (5) respectively; Control the rotation of the rotating tool (2) to simulate the rotation of the spindle bearing; Observe whether the two sealing ring receiving cavities (5) leak oil, so as to test the sealing performance of the two sealing rings (10) respectively; By adjusting the size of the sealing ring receiving cavity (5), different compression amounts of the sealing ring (10) can be achieved, simulating the operating state of the sealing ring (10) under different working conditions.

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