CN213450694U

CN213450694U - Wind turbine generator system protection device that turns round cable driftage

Info

Publication number: CN213450694U
Application number: CN202021533738.1U
Authority: CN
Inventors: 王�琦; 屈德斌; 郭锐; 白锐; 尚利亚; 武永刚; 张晓宇
Original assignee: Guohua Shenmu New Energy Co ltd; Shenhua New Energy Co Ltd
Current assignee: Guohua Shenmu New Energy Co ltd; Shenhua New Energy Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-06-15
Anticipated expiration: 2030-07-29

Abstract

The utility model provides a wind turbine generator system protection device is turned round in driftage, protection device includes fixed part and protection part, the fixed part is connected in the driftage one end of turning round the loose pulley shaft of the fixed pulley in the cable system, the one end of protection part with the fixed part is connected, the protection part is located the top of fixed pulley and covering pulley groove on the fixed pulley periphery is located the notch at fixed pulley top. The utility model discloses a protection device adopts the technological means who covers the notch of pulley groove on the fixed pulley, has sealed the way that wire rope deviates from the pulley groove to prevent that wire rope from droing from the fixed pulley, avoided reporting to the police with the shut down accident because of the unit error that the wire rope drove and brought from the fixed pulley.

Description

Wind turbine generator system protection device that turns round cable driftage

Technical Field

The utility model relates to a wind turbine generator system driftage technical field, especially relate to a wind turbine generator system driftage is turned round cable system protection device.

Background

A yaw cable twisting protection system of a wind generating set generally adopts the combination of a steel wire rope and a fixed pulley, and the number of turns of the steel wire rope which can be twisted is related to the length of the steel wire rope. In the yawing process of the wind turbine generator, the steel wire rope is continuously twisted, the whole length of the steel wire rope is continuously reduced, and then a heavy hammer at the tail end of the steel wire rope is gradually lifted; when the heavy hammer at the tail end is lifted and touches the limit switch, the number of cable twisting rings reaches a limit value, the wind power system reports a fault and stops, and therefore the cable is prevented from being twisted off through excessive yawing.

The wind generating set can encounter wind power of different grades and different working conditions in the long-time operation process. For example, when the wind generating set operates in windy weather or under a working condition with large yaw vibration, the swing amplitude of the tower drum at the upper part is large, so that a steel wire rope in a yaw cable twisting protection system is easy to fall off from a fixed pulley, and then a limit switch is easy to be touched by mistake, so that a wind power system reports a fault by mistake and stops, electric quantity loss is caused, and the availability of the set is reduced.

SUMMERY OF THE UTILITY MODEL

To the problem among the above-mentioned prior art, this application has provided a wind turbine generator system protection device is turned round in driftage, can effectively prevent that wire rope from droing from the fixed pulley when a tower section of thick bamboo vibrations are great, guarantees that the normal function that the cable system was turned round in driftage does not receive vibrations to influence.

The utility model discloses a cable system protection device is turned round in driftage of wind turbine generator system, protection device includes fixed part and protection part, the fixed part is connected in the driftage one end of turning round the loose pulley shaft of the fixed pulley in the cable system, the one end of protection part with the fixed part is connected, the protection part is located the top of fixed pulley and cover pulley groove on the fixed pulley periphery is located the notch at fixed pulley top.

In one embodiment, the fixing portion is provided with an assembling hole for connecting a pulley shaft, the fixing portion extends along a radial direction of the fixed pulley, the protecting portion extends along an axial direction of the fixed pulley, and the fixing portion and the protecting portion are integrally L-shaped.

In one embodiment, one end of the protection part, which is far away from the fixing part, extends to the end part of the fixed pulley, and the tail end of the protection part is bent to form a bent part buckled at the corner connection part of the circumferential surface and the end surface of the fixed pulley.

In one embodiment, the end of the pulley shaft is provided with a thread, the assembly hole is a screw hole, and the assembly hole is in threaded connection with the pulley shaft.

In one embodiment, one end of the pulley shaft is fixedly connected with a rack of the wind turbine generator, and the other end of the pulley shaft is free, and the fixing part is connected to one end of the pulley shaft, which is connected with the rack.

In one embodiment, the guard portion has a clearance from the fixed sheave.

In one embodiment, the gap between the protection portion and the circumferential surface of the fixed sheave is an assembly gap having a width smaller than a diameter of the wire rope in the sheave groove.

In one embodiment, the protection part is an arc bent along the circumferential direction of the fixed pulley, and the center of a circle corresponding to the arc of the arc protection part is located on the axis of the fixed pulley.

In one embodiment, the arc of the guard portion corresponds to a central angle of not more than 90 °.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

The utility model provides a pair of cable system protection device is turned round in driftage of wind turbine generator system compares with prior art, possesses following beneficial effect at least:

the utility model discloses a protection device adopts the technological means who covers the notch in pulley groove on the fixed pulley, has sealed wire rope and has deviate from the way in pulley groove to prevent that wire rope from droing from the fixed pulley, played the normal use of protecting wind turbine generator system driftage when a tower section of thick bamboo vibrations are great, avoided reporting to the police with the shut down accident because of the unit error that the wire rope drops and brings from the fixed pulley.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic structural view of the protection device of the present invention;

FIG. 2 shows a left side view of the structure shown in FIG. 1;

fig. 3 shows a schematic structural diagram of a protection device according to one embodiment of the present invention;

FIG. 4 shows a left side view of the structure shown in FIG. 3;

fig. 5 shows a schematic structural view of a protection device according to another embodiment of the present invention;

in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.

Reference numerals:

1-fixing part, 11-assembling hole, 2-protecting part, 21-bending part, 3-fixed pulley, 31-pulley shaft, 311-thread, 32-pulley groove, 4-steel wire rope, 5-assembling gap and 6-frame.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses a wind turbine generator system protection device is turned round in driftage, protection device include fixed part 1 and protection part 2, and fixed part 1 is connected in the driftage one end of turning round the pulley shaft 31 of fixed pulley 3 in the cable system, and the one end and the fixed part 1 of protection part 2 are connected, and protection part 2 is located the top of fixed pulley 3 and covers the notch that pulley groove 32 on the 3 periphery of fixed pulley is located fixed pulley 3 top.

Specifically, the wind turbine yaw cable twisting system comprises a fixed pulley 3 and a steel wire rope 4 matched in a pulley groove 32 of the fixed pulley 3, and the main function of the protection device is to prevent the steel wire rope 4 from falling out of the pulley groove 32 due to vibration. Wherein, the protection part 2 of the protection device plays a main role in preventing the steel wire rope 4 from falling out, as shown in fig. 1 of the accompanying drawings, the protection part 2 is located above the fixed pulley 3 and covers the notch of the pulley groove 32, that is, the way for the steel wire rope 4 to fall out of the pulley groove 32 is closed, and then the steel wire rope 4 can be prevented from falling out. The fixing part 1 is used for keeping the protection part 2 and the pulley shaft 31 relatively static, the fixed pulley 3 is sleeved on the pulley shaft 31, and when the pulley rotates, the protection device and the pulley shaft 31 are integrally kept static, so that the stability of the structure of the protection device is ensured.

The protection member 2 may be a flat plate as shown in fig. 2 of the drawings, or a rod, and the difference is that the flat plate-shaped protection member 2 has a larger coverage area above the pulley groove 32, which is more effective in preventing the wire rope 4 from coming out of the pulley groove 32.

In one embodiment, the fixing portion 1 is provided with an assembling hole 11 for connecting the pulley shaft 31, the fixing portion 1 extends along the radial direction of the fixed pulley 3, the protecting portion 2 extends along the axial direction of the fixed pulley 3, and the fixing portion 1 and the protecting portion 2 are integrally L-shaped.

In one embodiment, one end of the protection part 2 far away from the fixing part 1 extends to the end part of the fixed pulley 3, and the tail end of the protection part 2 is bent to form a bent part 21 buckled at the corner connection part of the circumferential surface and the end surface of the fixed pulley 3.

Specifically, the structure between the bending part 21 and the end of the fixed pulley 3 has certain constraint, and if the tower of the wind power equipment generates large vibration, the bending part 21 and the end of the fixed pulley 3 have certain clamping constraint effect in the vibration process, so that the relative stability of the structure between the protection device and the fixed pulley 3 is ensured.

In one embodiment, the end of the pulley shaft 31 is provided with a screw 311, the assembly hole 11 is a screw hole, and the assembly hole 11 is connected with the pulley shaft 31 through the screw 311.

One end of the pulley shaft 31 is fixedly connected with the rack 6 of the wind turbine generator, and the other end of the pulley shaft 31 is free, and the fixing part 1 is connected to one end of the pulley shaft 31 connected with the rack 6.

Specifically, the assembly hole 11 is connected with the pulley shaft 31 through a thread 311, and has a certain constraint, specifically, the thread 311 can prevent the fixing part 1 from moving in the axial direction of the pulley shaft 31 during the operation of the wind turbine generator. When the protection device is used specifically, the screw 311 can prevent the fixing part 1 from rotating around the pulley shaft 31, that is, the fixing part 1 is prevented from moving in the axial direction of the pulley shaft 31 by rotating, specifically, as shown in fig. 1 of the drawings, the fixed pulley 3 and the protection device are integrally installed on the frame 6 of the wind turbine generator, the pulley shaft 31 of the fixed pulley 3 is connected with the frame 6 by the screw 311, the connection length of the pulley shaft 31 and the frame 6 and the length of the pulley shaft 31 matched with the assembly hole 11 are equal to the length of the area covered by the screw 311 on the pulley shaft 31, so that no extra screw 311 area on the pulley shaft 31 can be used for the fixing part 1 to rotate and move.

In one embodiment, there is a gap between the protector 2 and the fixed sheave 3.

Specifically, the clearance indicates that the protector 2 and the fixed pulley 3 do not contact each other, that is, the protector 2 does not affect the normal rotation of the fixed pulley 3, and the rotation of the fixed pulley 3 does not affect the stability of the protector 2 and thus the entire protector.

Preferably, a gap between the protecting portion 2 and the circumferential surface of the fixed sheave 3 is a fitting gap 5, and a width of the fitting gap 5 is smaller than a diameter of the wire rope 4 in the sheave groove 32.

Specifically, the width of the fitting gap 5 is smaller than the diameter of the wire rope 4, and the wire rope 4 can be prevented from coming out of the pulley groove 32 from the fitting gap 5 even if the protection portion 2 and the fixed pulley 3 are not in contact with each other and are not affected by each other.

In one embodiment, the protecting portion 2 is an arc shape that is curved in the circumferential direction of the fixed pulley 3, and the center of a circle on which the arc of the arc-shaped protecting portion 2 corresponds is located on the axis of the fixed pulley 3.

Specifically, as shown in fig. 3 and 4, the arc-shaped protecting portion 2 may be more closely fitted to the circumferential surface shape of the fixed sheave 3. Compared with the structure shown in the attached figure 1, in the embodiment, the distance between any position of the protection part 2 and the circumferential surface of the fixed pulley 3 is the same, so that the gap and the actual width of the assembly gap 5 can be conveniently controlled during assembly; in addition, the area of the protection part 2 actually covering the circumferential surface of the fixed pulley 3 is larger, and the anti-falling effect is better.

Preferably, the circular arc of the protector 2 corresponds to a central angle of not more than 90 °.

Specifically, as shown in fig. 4, the steel wire rope 4 enters the pulley groove 32 from a horizontal state and outputs the pulley groove 32 from a vertical state, so that the angle range of the central angle corresponding to the actual matching part of the steel wire rope 4 and the pulley groove 32 is 90 °, and therefore, the central angle corresponding to the arc of the protection part 2 is not greater than 90 °, which prevents the protection part 2 and the steel wire rope 4 from contacting and pressing each other due to an excessively large angle, and prevents the protection part 2 from influencing the normal use of the steel wire rope 4. Meanwhile, the position covered by the protection part 2 also corresponds to the part of the steel wire rope 4 actually matched with the pulley groove 32, such as the part of the upper right corner of the fixed pulley 3 shown in the attached figure 4.

In one embodiment, as shown in fig. 5, the protection portion 2 may also be combined with a flat plate-shaped portion on the basis of an arc, that is, a flat plate-shaped portion along the tangential direction of the fixed pulley 3 may extend from one side or both sides of the arc of the protection portion 2, so that the area covered between the protection portion 2 and the fixed pulley 3 can be further increased on the basis of not affecting the normal use of the steel wire rope 4, and the effect of preventing the steel wire rope 4 from coming off is improved.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. The utility model provides a wind turbine generator system protection device that turns round cable system driftage, a serial communication port, protection device includes fixed part and protection portion, the fixed part is connected in the driftage one end of turning round the pulley shaft of the fixed pulley in the cable system, the one end of protection portion with the fixed part is connected, the protection portion is located the top of fixed pulley and cover pulley groove on the fixed pulley periphery is located the notch at fixed pulley top.

2. The wind turbine generator yaw cable twisting system protection device according to claim 1, wherein the fixing portion is provided with an assembly hole for connecting a pulley shaft, the fixing portion extends along a radial direction of the fixed pulley, the protection portion extends along an axial direction of the fixed pulley, and the fixing portion and the protection portion are integrally L-shaped.

3. The wind turbine generator yaw cable twisting system protection device according to claim 2, wherein one end of the protection part, which is far away from the fixing part, extends to the end part of the fixed pulley, and the tail end of the protection part is bent to form a bending part buckled at a corner connecting part of the circumferential surface and the end surface of the fixed pulley.

4. The wind turbine generator yaw cable twisting system protection device according to claim 2, wherein the tail end of the pulley shaft is provided with threads, the assembly hole is a screw hole, and the assembly hole is in threaded connection with the pulley shaft.

5. The wind turbine generator yaw cable twisting system protection device according to claim 4, wherein one end of the pulley shaft is fixedly connected with a frame of the wind turbine generator, the other end of the pulley shaft is free, and the fixing portion is connected to one end, connected with the frame, of the pulley shaft.

6. The protection device for the wind turbine generator yaw twisting cable system according to any one of claims 1 to 5, wherein a gap is formed between the protection part and the fixed pulley.

7. The wind turbine yaw cable twisting system protection device according to claim 6, wherein the gap between the protection portion and the circumferential surface of the fixed pulley is an assembly gap, and the width of the assembly gap is smaller than the diameter of the steel wire rope in the pulley groove.

8. The wind turbine generator yaw cable twisting system protection device according to claim 1, wherein the protection portion is an arc-shaped portion which is bent along the circumferential direction of the fixed pulley, and the circle center of a circle where the arc of the arc-shaped protection portion corresponds to is located on the axis of the fixed pulley.

9. The wind turbine yaw cabling system protecting device according to claim 8, wherein a central angle corresponding to a circular arc of the protecting portion is not greater than 90 °.