Wind driven generator unit main shaft structure with split oil seal structure

Abstract

The utility model relates to the field of wind generating sets, in particular to a wind generating set main shaft structure with a split type oil seal structure, which comprises a main shaft and a split type oil seal component, the main shaft is sleeved inside the split type oil seal component, and the split type oil seal component is used for performing oil seal on the main shaft. The split type oil seal assembly comprises a positioning ring, and a main shaft is arranged in the positioning ring in a sleeved mode. When the first sealing half cylinder and the second sealing half cylinder are fixed, the first sealing ring and the second sealing ring are attached in a sealed mode, meanwhile, the first rubber sealing ring and the second rubber sealing ring are attached and sealed under the action of the spring, and therefore a sealed space is formed in the first sealing half cylinder and the second sealing half cylinder under the condition that rotation of a main shaft is not affected; therefore, the sealing effect of the first sealing half cylinder and the second sealing half cylinder is guaranteed while the split effect is guaranteed, and the main shaft can be normally lubricated and used.

Description

Technical Field

[0001] The utility model relates to the field of wind power generator sets, in particular to a main shaft structure of a wind power generator set with a split oil seal structure. Background Art

[0002] The wind power source consists of a wind turbine generator set, a tower supporting the generator set, a battery charge controller, an inverter, a load unloader, a grid controller, a battery pack, etc. The wind turbine generator set includes a wind wheel and a generator; the wind wheel contains blades, a hub, reinforcements, etc. It has the functions of blades rotating under wind power to generate electricity and the generator head rotating. Among them, the main shaft is an important transmission component and its lubrication is particularly important because it needs to rotate during daily operation.

[0003] After searching, an invention patent with publication number CN117231632A is found, which is a semi-direct drive wind turbine bearing oil seal structure, which includes a copper seal and at least one circle of labyrinth seals arranged in sequence along the axial direction at the rear end between the bearing shaft and the bearing seat; the rear end of the bearing seat is provided with a cavity for oil drainage, and the copper seal and the labyrinth seal are provided with oil drainage grooves at positions corresponding to the cavity. The present invention adopts a combined sealing structure of copper seal and labyrinth seal and a structure for draining oil from a cavity using a partition and an oil drain pipe. This structure can greatly improve the bearing sealing effect in a smaller space, avoid oil leakage, and ensure the normal operation of the generator.

[0004] In order to ensure the lubrication of the main shaft, the existing generator set stores a large amount of lubricating liquid in the main shaft drive assembly to ensure the normal operation of the main shaft. However, during the operation, the continuous rotation of the main shaft may cause leakage of the lubricating liquid. Therefore, an oil seal is generally used to seal the lubricating liquid. Since the existing oil seal is annular, it is difficult to replace it after its oil sealing effect deteriorates. Therefore, a split oil seal is generally used for sealing. However, the split oil seal on the market is easy to replace, so the main body can be disassembled. As a result, slight leakage will still occur after long-term use, thus affecting the normal operation of the main shaft.

[0005] Therefore, it is necessary to invent a wind turbine generator set main shaft structure with a split oil seal structure to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a main shaft structure of a wind turbine generator set with a split oil seal structure, by which the sealing ring one moves toward the sealing ring two and the rubber sealing ring one fits toward the rubber sealing ring two, and under the tension of the spring, the internal sealing effect of the sealing half cylinder one and the sealing half cylinder two is achieved, so as to solve the problem of oil leakage in the split oil seal ring in the prior art, which affects the normal use of the main shaft.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a main shaft structure of a wind turbine generator set with a split oil seal structure, comprising a main shaft and a split oil seal assembly, wherein the main shaft is sleeved inside the split oil seal assembly, and the split oil seal assembly is used to oil seal the main shaft;

[0008] The split oil seal assembly includes a positioning ring, a main shaft is sleeved inside the positioning ring, a sealing half-cylinder 1 is threadedly fixed to one side of the positioning ring, and a sealing half-cylinder 2 is threadedly fixed to the side of the positioning ring away from the sealing half-cylinder 1, a plurality of sets of fixing bolts are installed between the sealing half-cylinder 1 and the sealing half-cylinder 2, and the sealing half-cylinder 1 and the sealing half-cylinder 2 are sealed and fitted to form a ring shape, and the sealing half-cylinder 1 and the sealing half-cylinder 2 are connected with the main shaft through the sealing half-cylinder 1 and the sealing half-cylinder 2.

[0009] Preferably, the split oil seal assembly further comprises a sealing ring 1 located on the inner wall of the sealing half cylinder 1 and the sealing half cylinder 2, and the two groups of the sealing ring 1 form a circular ring shape.

[0010] Preferably, a fixing ring is sleeved and fixed on the main shaft, and six groups of sleeves are installed in a ring-shaped distribution on one side of the fixing ring.

[0011] Preferably, a push rod is provided in the sleeve for limiting sliding, a push ring is installed on one side of the push rod, the push ring is sleeved with the main shaft, a spring is sleeved on the push rod, one side of the spring is fitted with the sleeve, and the side away from the sleeve is fitted with the push ring.

[0012] Preferably, a sealing ring 2 is installed on the side of the push ring away from the spring, a sealing groove is opened on one side of the sealing ring 2, and the sealing groove fits with the two sets of sealing rings 1.

[0013] Preferably, a rubber sealing ring 1 is installed on the same side of the push ring as the spring, a rubber sealing ring 2 is sleeved and fixed on the main shaft, and the rubber sealing ring 2 is arranged between the fixed ring and the push ring, and the rubber sealing ring 2 is in contact with the rubber sealing ring 1.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] When the sealing half-cylinder one and the sealing half-cylinder two are fixed, the sealing ring one and the sealing ring two will be sealed together. At the same time, under the action of the spring, the rubber sealing ring one will be sealed against the rubber sealing ring two, so that a sealed space is formed inside the sealing half-cylinder one and the sealing half-cylinder two without affecting the rotation of the main shaft. In this way, while ensuring the splitting effect, the sealing effect of the sealing half-cylinder one and the sealing half-cylinder two is guaranteed, so that the main shaft can be lubricated and used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the main shaft of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the positioning ring and the main shaft of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection structure of the sealing half cylinder 1 and the sealing half cylinder 2 of the utility model;

[0020] Figure 4 It is a schematic diagram of the matching structure of the rubber sealing ring 1 and the rubber sealing ring 2 of the utility model;

[0021] Figure 5 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 6 For the utility model Figure 4 Enlarged structural diagram at B in the middle.

[0023] Description of reference numerals:

[0024] 001, main shaft; 002, split oil seal assembly; 201, positioning ring; 202, sealing half cylinder one; 203, sealing half cylinder two; 204, fixing bolt; 205, sealing ring one; 206, fixing ring; 207, sleeve; 208, push rod; 209, push ring; 210, spring; 211, sealing ring two; 212, sealing groove; 213, rubber sealing ring one; 214, rubber sealing ring two. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-6 The main shaft structure of a wind turbine generator set with a split oil seal structure shown in the figure comprises a main shaft 001 and a split oil seal assembly 002, the main shaft 001 is sleeved inside the split oil seal assembly 002, and the split oil seal assembly 002 is used to oil seal the main shaft 001;

[0027] The split oil seal assembly 002 includes a positioning ring 201, in which the main shaft 001 is sleeved, a sealing half-cylinder 1 202 is screwed and fixed to one side of the positioning ring 201, and a sealing half-cylinder 2 203 is screwed and fixed to the side of the positioning ring 201 away from the sealing half-cylinder 1 202, a plurality of sets of fixing bolts 204 are installed between the sealing half-cylinder 1 202 and the sealing half-cylinder 2 203, and the sealing half-cylinder 1 202 and the sealing half-cylinder 2 203 are sealed and fitted to form a ring shape, and the sealing half-cylinder 1 202 and the sealing half-cylinder 2 203 are connected through the main shaft 001.

[0028] By fixing with fixing bolts 204, sealing half-cylinder 1 202 and sealing half-cylinder 2 203 are firmly fitted and fixed, so that the rubber pads on both sides are squeezed, thereby producing a sealing effect, and the positioning ring 201 is fixed to the outer casing of the generator set, and the main shaft 001 is axially connected to the driving component inside the generator set, and lubricant is provided in sealing half-cylinder 1 202 and sealing half-cylinder 2 203.

[0029] Furthermore, in the above structure, the split oil seal assembly 002 also includes a sealing ring 205 located on the inner wall of the sealing half cylinder 1 202 and the sealing half cylinder 203, and the two sets of sealing rings 205 form a circular ring shape.

[0030] Furthermore, in the above structure, a push rod 208 is provided for limiting sliding inside the sleeve 207, a push ring 209 is installed on one side of the push rod 208, the push ring 209 is sleeved with the main shaft 001, a spring 210 is sleeved on the push rod 208, one side of the spring 210 is in contact with the sleeve 207, and the side away from the sleeve 207 is in contact with the push ring 209.

[0031] When the push rod 208 is pushed into the sleeve 207 by the push ring 209, the spring 210 can be squeezed.

[0032] Furthermore, in the above structure, a fixing ring 206 is sleeved and fixed on the main shaft 001, and six groups of sleeves 207 are installed in a circular shape on one side of the fixing ring 206.

[0033] Furthermore, a sealing ring 211 is installed on the side of the push ring 209 away from the spring 210 , and a sealing groove 212 is opened on one side of the sealing ring 211 , and the sealing groove 212 fits with the two sets of sealing rings 1 205 .

[0034] The sealing groove 212 cooperates with the two sets of sealing rings 1 205 to seal between the sealing half cylinder 1 202 and the sealing half cylinder 2 203 and the main shaft 001 .

[0035] Furthermore, in the above structure, a rubber sealing ring 213 is installed on the same side of the push ring 209 as the spring 210, a rubber sealing ring 214 is sleeved and fixed on the main shaft 001, and the rubber sealing ring 214 is arranged between the fixing ring 206 and the push ring 209, and the rubber sealing ring 214 is in contact with the rubber sealing ring 213.

[0036] When the push ring 209 moves, the rubber sealing ring 1 213 and the rubber sealing ring 214 are precisely fitted together. At the same time, under the reaction force of the spring 210, the sealing ring 211 and the sealing ring 1 205 are fitted together. The rubber sealing ring 1 213 and the rubber sealing ring 214 and the sealing ring 211 and the sealing ring 1 205 are all made of highly wear-resistant materials.

[0037] How this utility works:

[0038] Refer to the instruction manual Figure 1-6 , the sealing half cylinder 1 202 and the sealing half cylinder 203 are assembled and fixed by fixing bolts 204, and the two are sleeved on the main shaft 001, so that the sealing ring 1 205 fits into the sealing groove 212, and the sealing half cylinder 1 202 and the sealing half cylinder 203 are moved toward the positioning ring 201 to fit together, and the push ring 209 drives the push rod 208 to move into the sleeve 207, so that the spring 210 is squeezed, so that the sealing ring 1 205 and the sealing ring 211 fit together. At the same time, the rubber sealing ring 1 213 and the rubber sealing ring 214 are attached and sealed, and the sealing half cylinder 1 202 and the sealing half cylinder 203 are sealed and fixed to one side of the positioning ring 201 through nuts. At this time, the rotation of the main shaft 001 will drive the sealing ring 1 205 to slide along the sealing groove 212, and the rubber sealing ring 1 213 will slide along the rubber sealing ring 214, and the sealing state can still be maintained during sliding, thereby realizing the split oil seal effect of the main shaft 001.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A main shaft structure of a wind turbine generator set with a split oil seal structure, comprising a main shaft (001) and a split oil seal assembly (002), characterized in that: The main shaft (001) is sleeved inside the split oil seal assembly (002), and the split oil seal assembly (002) is used to perform oil sealing on the main shaft (001); The split oil seal assembly (002) comprises a positioning ring (201), a main shaft (001) is sleeved inside the positioning ring (201), a sealing half-cylinder 1 (202) is screwed and fixed to one side of the positioning ring (201), a sealing half-cylinder 2 (203) is screwed and fixed to the side of the positioning ring (201) away from the sealing half-cylinder 1 (202), a plurality of sets of fixing bolts (204) are installed between the sealing half-cylinder 1 (202) and the sealing half-cylinder 2 (203), the sealing half-cylinder 1 (202) and the sealing half-cylinder 2 (203) are sealed and fitted to form a ring shape, and the sealing half-cylinder 1 (202) and the sealing half-cylinder 2 (203) are connected to the main shaft (001) through the sealing half-cylinder 1 (202) and the sealing half-cylinder 2 (203).

2. The main shaft structure of a wind turbine generator set with a split oil seal structure according to claim 1, characterized in that: The split oil seal assembly (002) further comprises a sealing ring one (205) located on the inner wall of the sealing half cylinder one (202) and the sealing half cylinder two (203), and the two groups of the sealing ring one (205) form a circular ring shape.

3. The main shaft structure of a wind turbine generator set with a split oil seal structure according to claim 1, characterized in that: A fixing ring (206) is sleeved and fixed on the main shaft (001), and six groups of sleeves (207) are installed in an annular arrangement on one side of the fixing ring (206).

4. The main shaft structure of a wind turbine generator set with a split oil seal structure according to claim 3, characterized in that: A push rod (208) is provided in the sleeve (207) for limited sliding movement. A push ring (209) is installed on one side of the push rod (208). The push ring (209) is sleeved with the main shaft (001). A spring (210) is sleeved on the push rod (208). One side of the spring (210) is in contact with the sleeve (207), and the side away from the sleeve (207) is in contact with the push ring (209).

5. The main shaft structure of a wind turbine generator set with a split oil seal structure according to claim 4, characterized in that: A second sealing ring (211) is installed on the side of the push ring (209) away from the spring (210), and a sealing groove (212) is provided on one side of the second sealing ring (211), and the sealing groove (212) fits with the two sets of first sealing rings (205).

6. The main shaft structure of a wind turbine generator set with a split oil seal structure according to claim 5, characterized in that: The push ring (209) is fitted with a rubber sealing ring 1 (213) on the same side as the spring (210), and the main shaft (001) is sleeved and fixed with a rubber sealing ring 2 (214), and the rubber sealing ring 2 (214) is arranged between the fixing ring (206) and the push ring (209), and the rubber sealing ring 2 (214) is fitted with the rubber sealing ring 1 (213).

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