Oil leakage prevention structure of wind power variable pitch system

Abstract

The utility model discloses an oil leakage prevention structure of a wind power variable pitch system, which relates to the technical field of oil leakage prevention and comprises a supporting ring and a sealing sleeve, the supporting ring is connected with the sealing sleeve through a bolt, a first shaft sleeve and a second shaft sleeve are arranged between the supporting ring and the sealing sleeve, a first sealing assembly is arranged on the inner side of the supporting ring, and a second sealing assembly is arranged on the outer side of the sealing sleeve. A second sealing assembly and a third sealing assembly are arranged on the inner side of the first shaft sleeve. Through cooperation of the supporting ring, the sealing sleeve, the first shaft sleeve, the second shaft sleeve, the first sealing assembly, the second sealing assembly and the third sealing assembly, the problem that lubricating oil in a variable pitch system easily permeates into a motor along a rotating shaft along with rotation of the rotating shaft, and normal work of the motor is affected is solved; and the operation stability of the whole variable pitch system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anti -leakage oil, specifically is a wind force variable pitch system anti -leakage oil structure. BACKGROUND

[0002] Wind force variable pitch refers to the pitch angle of the wind turbine blade is adjusted, thereby changing the angle of attack of the airflow to the blade, and then controlling the aerodynamic torque and aerodynamic power captured by the wind wheel. This process is mainly realized through the variable pitch system, which plays a crucial role in the wind turbine generator system, ensuring the safety, stability and efficient operation of the unit under various wind speed conditions.

[0003] In order to ensure the smooth operation of the variable pitch system, a large amount of lubricating oil will be applied to the rotating bearing and gear, and with the rotation of the rotating shaft, the lubricating oil is easy to penetrate into the motor along the rotating shaft, affecting the normal work of the motor, and even damaging the motor, thereby affecting the operation of the whole variable pitch system.

[0004] Based on this, a wind force variable pitch system anti -leakage oil structure is provided, which can eliminate the drawbacks of the existing device. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a wind force variable pitch system anti -leakage oil structure to solve the problem in the background art.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A wind force variable pitch system anti -leakage oil structure, including support ring and sealing cover, the support ring and sealing cover are connected through bolt, first shaft sleeve and second shaft sleeve are equipped between the support ring and sealing cover, the first sealing assembly is equipped in the inside of support ring, the second sealing assembly and third sealing assembly are equipped in the inside of first shaft sleeve.

[0008] On the basis of the above technical scheme, the utility model also provides the following optional technical scheme:

[0009] In an optional scheme: the support ring side is equipped with annular groove, the first installation groove for installing the first sealing assembly is equipped in the annular groove, a plurality of first U-shaped seats are equipped in the annular groove, the first movable block is rotatably connected on the first U-shaped seat, the first pressing block is equipped on the first movable block, and the first protrusion is also equipped on the first movable block.

[0010] In an optional scheme: the sealing cover is equipped with flange plate at one end close to the support ring, the shaft hole is equipped at the middle position of the sealing cover, and the first convex ring is equipped on the inside of the flange plate.

[0011] In an alternative: the first shaft sleeve is provided with a first tapered seat at one end, the first shaft sleeve is provided with a first clamping groove at the side, the first tapered seat is provided with a second protruding ring at one side, the first shaft sleeve is provided with a second mounting groove for mounting a second sealing assembly at the inner side, the first shaft sleeve is provided with a third mounting groove for mounting a third sealing assembly at the end away from the first tapered seat, the first shaft sleeve is provided with a plurality of second U-shaped seats at the end, the second U-shaped seats are rotatably connected with second movable blocks, the second movable blocks are provided with second pressing blocks, the second movable blocks are further provided with second protrusions, the second movable blocks and the second pressing blocks are provided with arc-shaped mounting grooves at the opposite side, and the arc-shaped mounting grooves are provided with spring rings.

[0012] In an alternative: the second shaft sleeve is provided with a second tapered seat at one end of the first shaft sleeve, and the second shaft sleeve is provided with a second clamping groove at the side.

[0013] In an alternative: the first sealing assembly comprises a first annular seat, a second annular seat and a third annular seat, the second annular seat is located between the first annular seat and the third annular seat, and two first sealing rings are concentrically arranged between the first annular seat and the second annular seat, and between the second annular seat and the third annular seat.

[0014] In an alternative: the second sealing assembly comprises a plurality of second sealing rings, and the second sealing rings are arranged in the second mounting groove.

[0015] In an alternative: the third sealing assembly comprises a fourth annular seat, a fifth annular seat and a sixth annular seat, the fifth annular seat is located between the fourth annular seat and the sixth annular seat, and two third sealing rings are concentrically arranged between the fourth annular seat and the fifth annular seat, and between the fifth annular seat and the sixth annular seat.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a supporting ring, sealing sleeve, first shaft sleeve, second shaft sleeve, first sealing assembly, second sealing assembly and third sealing assembly cooperate, solve the problem that the lubricating oil in the variable pitch system is easy to penetrate into the motor along the rotating shaft with the rotation of the rotating shaft, affect the normal work of the motor, improve the stability of the whole variable pitch system operation. ACCURACY OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of one side of the utility model.

[0019] Figure 2 It is the structure schematic diagram of the other side of the utility model.

[0020] Figure 3The axial section structure schematic diagram of the utility model.

[0021] Figure 4 The structure schematic diagram of the support ring in the utility model.

[0022] Figure 5 The structure schematic diagram of the first shaft sleeve in the utility model.

[0023] Mark annotation: 100, support ring;101, annular groove;102, first installation groove;103, first U-shaped seat;104, first movable block;105, first compression block;106, first protrusion;200, sealing sleeve;201, flange plate;202, shaft hole;203, first convex ring;300, first shaft sleeve;301, first conical seat;302, first clamping groove;303, second convex ring;304, second installation groove;305, third installation groove;306, second U-shaped seat;307, second movable block;308, second compression block;309, second protrusion;310, arc-shaped installation groove;311, spring ring;400, second shaft sleeve;401, second conical seat;402, second clamping groove;403, third convex ring;500, first sealing assembly;501, first annular seat;502, second annular seat;503, third annular seat;504, first sealing ring;600, second sealing assembly;601, second sealing ring;700, third sealing assembly;701, fourth annular seat;702, fifth annular seat;703, sixth annular seat;704, third sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed in combination with the drawings and examples.

[0025] In one embodiment, as shown in Figure 1 and Figure 2 An oil leakage prevention structure of a wind power variable pitch system, comprising a support ring 100 and a sealing sleeve 200, the support ring 100 and the sealing sleeve 200 are connected through bolts, the support ring 100 and the sealing sleeve 200 are provided with a first shaft sleeve 300 and a second shaft sleeve 400, the inner side of the support ring 100 is provided with a first sealing assembly 500, the inner side of the first shaft sleeve 300 is provided with a second sealing assembly 600 and a third sealing assembly 700, during installation, the support ring 100 with the first sealing assembly 500 is sleeved on the rotating shaft, then the first shaft sleeve 300 with the second sealing assembly 600 and the third sealing assembly 700, the second shaft sleeve 400 are sleeved in sequence, finally the sealing sleeve 200 is sleeved, and the sealing sleeve 200 and the support ring 100 are bolted.

[0026] In one embodiment, as shown in Figure 4As shown, the support ring 100 is provided with an annular groove 101 on one side, the annular groove 101 is provided with a first mounting groove 102 for mounting the first sealing assembly 500, the annular groove 101 is provided with a plurality of first U-shaped seats 103, the first U-shaped seats 103 are rotatably connected with first movable blocks 104, the first movable blocks 104 are provided with first pressing blocks 105, and the first movable blocks 104 are further provided with first protrusions 106, when installed, the first shaft sleeve 300 is pressed by the first pressing blocks 105 and the first protrusions 106, so that the first shaft sleeve 300 abuts against the first sealing assembly 500, and the first sealing assembly 500 is tightly attached to the rotating shaft.

[0027] In one embodiment, as shown in Figure 1 and Figure 2 , the sealing sleeve 200 is provided with a flange plate 201 at one end of the support ring 100, the sealing sleeve 200 is provided with a shaft hole 202 at the middle position, the inner side of the flange plate 201 is provided with a first convex ring 203, when installed, the sealing sleeve 200 is bolted with the support ring 100, so that the first convex ring 203 abuts against the first movable block 104, thereby making the first shaft sleeve 300 abut against the first sealing assembly 500.

[0028] In one embodiment, as shown in Figure 2 and Figure 5 , the first shaft sleeve 300 is provided with a first tapered seat 301 at one end, the side edge of the first shaft sleeve 300 is provided with a first clamping groove 302, the first tapered seat 301 is provided with a second convex ring 303 on one side, the inner side of the first shaft sleeve 300 is provided with a second mounting groove 304 for mounting the second sealing assembly 600, the end of the first shaft sleeve 300 away from the first tapered seat 301 is provided with a third mounting groove 305 for mounting the third sealing assembly 700, the end of the first shaft sleeve 300 is provided with a plurality of second U-shaped seats 306, the second U-shaped seats 306 are rotatably connected with second movable blocks 307, the second movable blocks 307 are provided with second pressing blocks 308, and the second movable blocks 307 are further provided with second protrusions 309, the side opposite to the second pressing blocks 308 of the second movable blocks 307 is provided with an arc-shaped mounting groove 310, the arc-shaped mounting groove 310 is provided with a spring ring 311, when installed, the second pressing blocks 308 and the second protrusions 309 are pressed by the spring ring 311, so that the second shaft sleeve 400 abuts against the third sealing assembly 700.

[0029] In one embodiment, as shown in Figure 1 and Figure 2 , the second shaft sleeve 400 is provided with a second tapered seat 401 at one end of the first shaft sleeve 300, the side edge of the second shaft sleeve 400 is provided with a second clamping groove 402, the second tapered seat 401 is provided with a third convex ring 403 on one side, when installed, the third convex ring 403 abuts against the third sealing assembly 700 by the action of the second pressing blocks 308 and the second protrusions 309 on the first shaft sleeve 300, so that the third sealing assembly 700 is tightly attached to the rotating shaft.

[0030] In one embodiment, as shown in Figure 3 The first sealing assembly 500 includes a first annular seat 501, a second annular seat 502, and a third annular seat 503, the second annular seat 502 is located between the first annular seat 501 and the third annular seat 503, and two first sealing rings 504 are arranged concentrically between the first annular seat 501 and the second annular seat 502 and between the second annular seat 502 and the third annular seat 503. During installation, the first shaft sleeve 300 applies extrusion force to the first annular seat 501, the second annular seat 502, and the third annular seat 503, so that the first annular seat 501, the second annular seat 502, and the third annular seat 503 extrude the first sealing ring 504 inward, and the first sealing ring 504 is always in a sealed state.

[0031] In one embodiment, as shown in Figure 3 The second sealing assembly 600 includes a plurality of second sealing rings 601, which are arranged in the second installation groove 304. The labyrinth seal structure formed by the plurality of second sealing rings 601 and the second installation groove 304 can effectively improve the anti-leakage effect.

[0032] In one embodiment, as shown in Figure 3 The third sealing assembly 700 includes a fourth annular seat 701, a fifth annular seat 702, and a sixth annular seat 703, the fifth annular seat 702 is located between the fourth annular seat 701 and the sixth annular seat 703, and two third sealing rings 704 are arranged concentrically between the fourth annular seat 701 and the fifth annular seat 702 and between the fifth annular seat 702 and the sixth annular seat 703. During installation, the second shaft sleeve 400 applies extrusion force to the fourth annular seat 701, the fifth annular seat 702, and the sixth annular seat 703, so that the fourth annular seat 701, the fifth annular seat 702, and the sixth annular seat 703 extrude the third sealing ring 704 inward, and the third sealing ring 704 is always in a sealed state.

[0033] The above embodiment discloses an oil leakage prevention structure of a wind power variable pitch system. During installation, the support ring 100 with the first sealing assembly 500 is first sleeved on the rotating shaft, then the first shaft sleeve 300 with the second sealing assembly 600 and the third sealing assembly 700 is sleeved, the first pressing block 105 is clamped into the first clamping groove 302, the first protrusion 106 is abutted against the first conical seat 301, the second protruding ring 303 is abutted against the first sealing assembly 500, then the second shaft sleeve 400 is sleeved, the second pressing block 308 is clamped into the second clamping groove 402, the second protrusion 309 is abutted against the second conical seat 401, the third protruding ring 403 is abutted against the third sealing assembly 700, the spring ring 311 is sleeved on the arc-shaped mounting groove 310 on the second movable block 307, the elastic pre-tightening force is provided through the spring ring 311, the second pressing block 308 is ensured to be in close contact with the second shaft sleeve 400, finally the sealing sleeve 200 is sleeved, and the sealing sleeve 200 and the support ring 100 are bolted, and the first protruding ring 203 is abutted against the first movable block 104.

[0034] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A wind power variable pitch system oil leakage prevention structure, comprising a support ring (100) and a sealing sleeve (200), the support ring (100) and the sealing sleeve (200) are connected by bolts, characterized in that, First shaft sleeve (300) and second shaft sleeve (400) are arranged between the support ring (100) and the sealing sleeve (200), the inner side of the support ring (100) is provided with a first sealing assembly (500), the inner side of the first shaft sleeve (300) is provided with a second sealing assembly (600) and a third sealing assembly (700).

2. The wind power variable pitch system oil leakage prevention structure according to claim 1, characterized in that, The support ring (100) is provided with an annular groove (101) on one side, the annular groove (101) is provided with a first mounting groove (102) for mounting the first sealing assembly (500), the annular groove (101) is provided with a plurality of first U-shaped seats (103), the first U-shaped seats (103) are rotatably connected with first movable blocks (104), the first movable blocks (104) are provided with first pressing blocks (105), and the first movable blocks (104) are further provided with first protrusions (106).

3. The wind power variable pitch system oil leakage prevention structure according to claim 1, wherein, The sealing sleeve (200) is provided with a flange plate (201) at one end of the support ring (100), the sealing sleeve (200) is provided with a shaft hole (202) at the middle position, and the inner side of the flange plate (201) is provided with a first convex ring (203).

4. The wind power variable pitch system oil leakage prevention structure according to claim 1, wherein, The first shaft sleeve (300) is provided with a first tapered seat (301) at one end, the first shaft sleeve (300) is provided with a first clamping groove (302) on the side, the first tapered seat (301) is provided with a second convex ring (303) on one side, the inner side of the first shaft sleeve (300) is provided with a second mounting groove (304) for mounting the second sealing assembly (600), the first shaft sleeve (300) is provided with a third mounting groove (305) for mounting the third sealing assembly (700) at the end away from the first tapered seat (301), the end of the first shaft sleeve (300) is provided with a plurality of second U-shaped seats (306), the second U-shaped seats (306) are rotatably connected with second movable blocks (307), the second movable blocks (307) are provided with second pressing blocks (308), the second movable blocks (307) are further provided with second protrusions (309), and the side opposite to the second pressing blocks (308) of the second movable blocks (307) is provided with an arc-shaped mounting groove (310), and the arc-shaped mounting groove (310) is provided with a spring ring (311).

5. The wind power variable pitch system oil leakage prevention structure according to claim 1, wherein, The second shaft sleeve (400) is provided with a second tapered seat (401) at one end of the first shaft sleeve (300), the second shaft sleeve (400) is provided with a second clamping groove (402) on the side, and the second tapered seat (401) is provided with a third convex ring (403) on one side.

6. The wind power variable pitch system oil leakage prevention structure according to claim 1, wherein, The first sealing assembly (500) comprises a first annular seat (501), a second annular seat (502) and a third annular seat (503), the second annular seat (502) is located between the first annular seat (501) and the third annular seat (503), and two concentric first sealing rings (504) are arranged between the first annular seat (501) and the second annular seat (502) and between the second annular seat (502) and the third annular seat (503).

7. The wind power variable pitch system oil leakage prevention structure according to claim 1, wherein, The second sealing assembly (600) comprises a plurality of second sealing rings (601), and the second sealing rings (601) are arranged in the second mounting groove (304).

8. The wind power variable pitch system oil leakage prevention structure of claim 1, wherein, The third sealing assembly (700) comprises a fourth annular seat (701), a fifth annular seat (702) and a sixth annular seat (703), the fifth annular seat (702) is located between the fourth annular seat (701) and the sixth annular seat (703), and two third sealing rings (704) are arranged in the fourth annular seat (701) and the fifth annular seat (702) and the fifth annular seat (702) and the sixth annular seat (703) in a concentric manner.

Images