CN219587708U

CN219587708U - Wind driven generator blade replacement device based on threaded fixation

Info

Publication number: CN219587708U
Application number: CN202320754374.7U
Authority: CN
Inventors: 刘作广; 谢丹; 马涛; 李�荣; 卢鲜亮; 保得云; 彭效然; 夏念静
Original assignee: Shanghai Gololi Technology Co ltd
Current assignee: Shanghai Gololi Technology Co ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-08-25
Anticipated expiration: 2033-04-07

Abstract

The utility model provides a wind driven generator blade replacement device based on thread fixation, which comprises: blade root lifting appliance, lifting machine, wire rope and control system; the blade root lifting appliance is arranged at the root of the blade; the elevator is arranged in the hub; one end of the steel wire rope is fixed on the blade root lifting appliance, and the other end of the steel wire rope is fixed on the lifting machine; the control system is used for controlling the wire rope to be pulled up or pulled down; the blade root lifting tool comprises a first end and a second end, wherein the first end is provided with threads, the second end is provided with a hole, the threads are matched with threaded holes in the root of a blade, and the hole is used for fixing the steel wire rope. According to the wind driven generator blade replacement device based on threaded fixation, provided by the utility model, the blades are replaced by using the lifting machine, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in the hub, so that the structure is more compact, and the use is more convenient.

Description

Wind driven generator blade replacement device based on threaded fixation

Technical Field

The utility model relates to the technical field of wind driven generators, in particular to a wind driven generator blade replacement device based on threaded fixation.

Background

With the increasing installed capacity of wind turbines and the year-by-year growth of service lives of wind turbines, more and more units need blade replacement. At present, a general wind driven generator adopts a large-sized automobile crane to replace the blades, a crawler crane is required to be used for replacing the blades by a large megawatt high tower fan, and a landing leg ship is required to be used for replacing the blades by an offshore wind driven generator. The use of large hoisting equipment generally results in high hoisting costs and is subject to environmental conditions, under which large hoisting equipment cannot be used.

Accordingly, there is a need to provide a wind turbine blade replacement device based on screw fixation for solving the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a wind driven generator blade replacement device based on thread fixation, which is characterized in that a lifter is used for replacing blades, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in a hub, so that the wind driven generator blade replacement device is more compact in structure and more convenient to use.

The embodiment of the utility model provides a wind driven generator blade replacement device based on thread fixation, which comprises: blade root lifting appliance, lifting machine, wire rope and control system; the blade root lifting appliance is arranged at the root of the blade; the hoisting machine is arranged in the hub; one end of the steel wire rope is fixed on the blade root lifting appliance, and the other end of the steel wire rope is fixed on the lifting machine; the control system is used for controlling the wire rope to be pulled up or pulled down; the blade root lifting tool comprises a first end and a second end, wherein the first end is provided with threads, the second end is provided with a hole, the threads are matched with threaded holes in the root of a blade, and the hole is used for fixing the steel wire rope.

Optionally, the number of the hoisting machines is at least two.

Optionally, the elevator is placed vertically on the ground inside the hub.

Optionally, the lifting machine is provided with a rope collector, one end of the steel wire rope is fixed on the blade root lifting appliance, the other end of the steel wire rope is fixed on the rope collector, and the rope collector controls the pulling-up or the pulling-down of the steel wire rope through the control system.

Optionally, the blade root sling has a plurality of planes thereon for exerting a force on the plurality of planes to screw the blade root sling into the threaded hole of the blade root when the tool is in use.

Optionally, the control system comprises a control cabinet and a controller, the control cabinet and the controller being mounted within the hub or within the nacelle.

Optionally, the control system comprises a sensor for monitoring the position of the wire rope.

Optionally, the sensor is mounted within the hub or within a nacelle.

Optionally, the sensor is further used for monitoring the position of the blade, and the controller controls the lifting speed of the blade according to the position of the blade.

Optionally, one end of the steel wire rope is fixed on the blade root sling, and one end of the steel wire rope penetrates out of the bearing bolt hole and then is fixed on the blade root sling. Compared with the prior art, the technical scheme of the embodiment of the utility model has at least the following beneficial effects:

according to the wind driven generator blade replacement device based on thread fixation, provided by the utility model, the blades are replaced by using the lifting machine, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in the hub, so that the structure is more compact, and the use is more convenient.

Drawings

FIG. 1 is a schematic diagram of the primary system of a wind turbine in an embodiment of the present utility model;

FIG. 2 is a schematic view of a wind turbine blade replacement device based on screw fixation in an embodiment of the present utility model;

FIG. 3 is another schematic view of a wind turbine blade replacement device based on screw fixation in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of a blade root sling in a wind turbine blade replacement device based on screw fixation in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic view of a control system in a wind turbine blade replacement device based on screw fixation in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic diagram of the assembly of a hoist and a wire rope in a wind turbine blade replacement device based on threaded fixation in an embodiment of the present utility model.

Reference numerals illustrate:

1. a hoist; 2. A wire rope; 3. Blade root sling;

4. a rope collector; 5. A control system; 31. A thread;

32. a plane; 33. A hole; 51. A control cabinet;

52. a controller; 53. A sensor.

Detailed Description

In order to make the objects, features and advantageous effects of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the following detailed description is merely illustrative of the utility model, and not restrictive of the utility model. Moreover, the use of the same, similar reference numbers in the figures may indicate the same, similar elements in different embodiments, and descriptions of the same, similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc. may be omitted.

It should be noted that, in order to clearly illustrate the wind turbine blade replacement device based on screw fixation in the embodiment of the present utility model, fig. 2 and 3 hide a part of the original wind power generation components in the hub.

Referring now to fig. 1 to 5, the wind power generator main system in the embodiment of the present utility model mainly includes a nacelle, a tower, a hub, bearings, blades and a blade replacement device, the tower is fixed on the ground, the nacelle is fixed on the top of the tower, the hub is fixed on the nacelle, the bearings are fixed on the hub, the blades are fixed on the hub through the bearings, generally, 3 blades are uniformly fixed on the hub.

Specifically, a wind-driven generator blade replacement device based on screw fixation includes: blade root lifting appliance 3, lifting machine 1, wire rope 2 and control system 5; the blade root lifting appliance 3 is arranged at the root of the blade; the hoisting machine 1 is arranged in the hub; one end of the steel wire rope 2 is fixed on the blade root lifting appliance 3, and the other end of the steel wire rope 2 is fixed on the lifting machine 1; the control system 5 is used for controlling the pulling-up or the pulling-down of the steel wire rope 2; the blade root lifting tool 3 comprises a first end portion and a second end portion, wherein the first end portion is provided with threads 31, the second end portion is provided with a hole 33, the threads 31 are matched with threaded holes of the blade root, and the hole 33 is used for fixing the steel wire rope 2.

In a specific implementation, the number of the hoisting machines 1 is at least two, and the installation of the at least two hoisting machines is uniformly distributed to form uniform force when hoisting the wire rope. The number of lifts 1 may also be three, four or more in order to create a greater pulling force for replacing larger and heavier blades. The hoisting machine 1 is placed vertically on the ground inside the hub.

In a specific implementation, the hoisting machine 1 is provided with a rope collector 4, one end of the steel wire rope 2 is fixed on the blade root lifting appliance 3, the other end of the steel wire rope 2 is fixed on the rope collector 4, and the rope collector 4 controls the pulling-up or the pulling-down of the steel wire rope 2 through the control system 5.

In a specific implementation, the blade root sling 3 has a plurality of flat surfaces 32, and the flat surfaces 32 are used for exerting force to screw the blade root sling 3 into a threaded hole of the blade root when a tool is used.

In a specific implementation, referring now to fig. 5, the control system 5 includes a control cabinet 51 and a controller 52, the control cabinet 51 and the controller 52 being mounted in the hub or in the nacelle, the control cabinet 51 being, for example, a PLC control cabinet. The control system further comprises a sensor 53, said sensor 53 being arranged to monitor the position of said wire rope 2. The sensor 53 is mounted in the hub or nacelle. When the space of the hub is crowded, which is insufficient for installing the control system 5, the control system 5 may be installed in a larger cabin in order to save operating space in the hub.

The sensor 53 is also used to monitor the position of the blade and the controller 5 controls the lifting speed of the blade in dependence on the position of the blade. For example, when the blade is close to the hub, the controller 5 controls to reduce the blade lifting speed, and when the blade is resting on the mounting flange, the operation of the hoisting machine 1 is stopped, thereby improving the work safety.

In a specific implementation, referring now to fig. 6, one end of the steel wire 2 is fixed to the blade root sling 3, including one end of the steel wire 2 being threaded out of the bearing bolt hole and then fixed to the blade root sling.

When the wind driven generator blade replacement device based on thread fixation is used, the wind driven generator blade replacement device comprises two application scenes of detaching blades and installing blades, and the wind driven generator blade replacement device is specifically described below.

When the blade is dismounted, firstly, the blade to be dismounted is adjusted to a vertically downward position (as shown in fig. 1), then blade root fixing bolts corresponding to the blade to be dismounted and used for mounting the blade root lifting tool 3 are dismounted, then the blade root lifting tool 3 connected with the steel wire rope 2 is fixed in the blade root fixing bolt holes through the hub bearing, the lifter 1 is fixed at the bottom of the hub, the control system 5 is fixed on the hub, the control system 5 is connected with the lifter 1, the lifter 1 is started, the steel wire rope 2 is tensioned, all other residual blade root fixing bolts are dismounted, the lifter 1 is started to downwards put the steel wire rope 2, the blade is put down to a desired position, and the blade root lifting tool 3 is dismounted.

When installing the blade, fix blade root hoist 3 to waiting to adorn the blade, start lifting machine 1 upwards receive wire rope 2, pull the blade to the sky reach the assigned position, fasten blade root fixing bolt, make the blade fix on the wheel hub, demolish blade root hoist 3, install and fasten blade root fixing bolt, demolish the blade change device.

In a specific implementation, the steel wire rope 2 and the blade root sling 3 can be connected in advance, the steel wire rope 2 passes through the lifter 1 to be assembled in advance, the free end of the steel wire rope 2 is folded on the rope collector 4, and meanwhile, the blade root sling side and the rope collector side of the lifter 1 are required to be ensured to be reserved for a sufficient length so as to be convenient to carry and install, and the pre-rope collecting time is saved, so that the working efficiency is improved.

Compared with the prior art, the technical scheme of the embodiment of the utility model has at least the following beneficial effects:

according to the wind driven generator blade replacement device based on thread fixation, provided by the embodiment of the utility model, the blade is replaced by using the lifting machine, a tower bottom power device is not needed, lifting equipment such as a steel wire rope is not needed to be arranged from the tower bottom to the tower top, and all the equipment is placed in the hub, so that the structure is more compact, and the use is more convenient.

Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In practice, the features of one or more of the dependent claims may be combined with the features of the independent claims where technically possible, according to the actual needs, and the features from the respective independent claims may be combined in any appropriate way, not merely by the specific combinations enumerated in the claims.

Although the present utility model is disclosed above, the present utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and the scope of the utility model should be assessed accordingly to that of the appended claims.

Claims

1. Wind-driven generator blade replacement device based on screw fixation, characterized by comprising: blade root lifting appliance, lifting machine, wire rope and control system; the blade root lifting appliance is arranged at the root of the blade; the hoisting machine is arranged in the hub; one end of the steel wire rope is fixed on the blade root lifting appliance, and the other end of the steel wire rope is fixed on the lifting machine; the control system is used for controlling the wire rope to be pulled up or pulled down; the blade root lifting tool comprises a first end and a second end, wherein the first end is provided with threads, the second end is provided with a hole, the threads are matched with threaded holes in the root of a blade, and the hole is used for fixing the steel wire rope.

2. The screw-based wind turbine blade replacement apparatus of claim 1, wherein the number of lifts is at least two.

3. The screw-based wind turbine blade replacement apparatus of claim 1 wherein the elevator is placed vertically on the ground within the hub.

4. The wind driven generator blade replacing device based on thread fixation according to claim 1, wherein the hoisting machine is provided with a rope collecting device, one end of the steel wire rope is fixed on the blade root hoisting tool, the other end of the steel wire rope is fixed on the rope collecting device, and the rope collecting device controls the pulling-up or the pulling-down of the steel wire rope through the control system.

5. The screw-fixation-based wind turbine blade replacement device of claim 1, wherein the blade root sling has a plurality of flats thereon for forcing the blade root sling into a threaded bore of the blade root when a tool is used.

6. The screw fixation based wind turbine blade replacement device of claim 1, wherein the control system comprises a control cabinet and a controller, the control cabinet and controller being mounted within the hub or within a nacelle.

7. The screw fixation based wind turbine blade replacement device of claim 6, wherein the control system comprises a sensor for monitoring the position of the wire rope.

8. The screw fixation based wind turbine blade replacement device of claim 7, wherein the sensor is mounted within the hub or nacelle.

9. The screw fixation based wind turbine blade replacement apparatus of claim 7 wherein the sensor is further configured to monitor a position of a blade, the controller controlling a lift rate of the blade based on the position of the blade.

10. The wind turbine blade replacement device based on threaded fixation of claim 1, wherein one end of the wire rope is fixed to the blade root sling, and wherein one end of the wire rope is fixed to the blade root sling after passing through a bearing bolt hole.