CN213360323U - Twisting cable protection system of wind turbine generator - Google Patents

Abstract

The utility model discloses a wind turbine generator system's twisting and seizing protection system, including pencil and support, the upper end ligature of pencil is on the cable, the lower extreme of pencil runs through downwards be connected with the pendulum behind the support, fixedly connected with on the support with the corresponding limit switch of pendulum, limit switch connects wind turbine generator system's major control system. The utility model has the advantages that: the cable monitoring device is flexible and simple in structure, can effectively monitor the twisting angle of a cable, can be used together with a yaw twisting sensor, realizes double insurance of cable monitoring, and reduces the risk of over-limit damage of the cable.

Description

Twisting cable protection system of wind turbine generator

Technical Field

The utility model relates to a wind turbine generator system's technical field particularly, relates to a wind turbine generator system's turning round and seizing protection system.

Background

The impeller of the wind driven generator unit is aimed at the wind direction in real time, so that the nacelle can be driven to yaw along with the change of the wind direction. Thereby achieving the effect of always being in a windward state. As the nacelle rotates, the cables erected inside the tower follow the twists. Usually the cable can be fixed in yaw bearing center to hang a section distance in the positive middle of a tower section of thick bamboo, the cable can follow the cabin and rotate together, because the weight reason of cable itself, can not infinitely hang in the air, so the cable becomes to fix on the tower section of thick bamboo wall after hanging certain length. The suspended length of cable is the cable-accessible portion. Depending on the characteristics of the cable, the free length is different, and the range of twisting is limited. Since the twisting of the cable is a limit requirement, when the twisting limit of the cable is reached, reverse cable-clearing is needed. If the cable torsion angle is small, the cable needs to be frequently stripped in the opposite direction, and the economy is reduced. If the cable torsion angle is too large and exceeds the limit of the cable, potential safety hazards exist. So the twisting angle of the accurate control cable is particularly important.

At present, in most MW-grade wind turbine generators, yaw cable twisting counting is mainly realized by recording a yaw angle through a PLC (programmable logic controller) and detecting a yaw rotation angle through a yaw cable twisting sensor and monitoring the cable twisting range of a cable. The yaw cable twisting sensor triggering principle is that a large gear ring of a yaw bearing drives a small gear ring of a cable twisting sensor to realize internal switch triggering, and then a triggering signal is fed back to a main control system to achieve the purpose of alarming. The trigger stroke of the limit switch is manually adjusted and set on site, and certain errors exist. If the adjustment trigger stroke is small, the number of yaw torsion turns does not reach the set parameter value, and the change trigger alarm influences the availability of the unit; if the triggering stroke is adjusted to be large, the set parameter value is reached, and the alarm is not triggered, so that the cable is twisted to exceed the set limit, and the service life of the cable is influenced.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides a wind turbine generator system turns round and seizes protection system can turn round with driftage and seize the sensor and use simultaneously, realizes turning round the redundant double protection of seizing to the cable, has reduced the risk that the cable transfinites the damage.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a wind turbine generator system's cable protection system that twists, includes pencil and support, the upper end ligature of pencil is on the cable, the lower extreme of pencil runs through downwards be connected with the pendulum behind the support, fixedly connected with on the support with the limit switch that the pendulum corresponds, limit switch connects wind turbine generator system's main control system.

Furthermore, a round hole through which the wiring harness can pass is formed in the support.

Further, the support is fixedly connected to a tower ladder of the wind turbine generator system.

Further, the limit switch is a microswitch.

Further, the master control system is also connected with a yaw cable twisting sensor.

The utility model has the advantages that: the cable monitoring device is flexible and simple in structure, can effectively monitor the twisting angle of a cable, can be used together with a yaw twisting sensor, realizes double insurance of cable monitoring, and reduces the risk of over-limit damage of the cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a twisting cable protection system of a wind turbine generator according to an embodiment of the present invention.

In the figure:

1. a cable; 2. a wire harness; 3. a pendulum bob; 4. a limit switch; 5. a support; 6. a tower ladder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

As shown in fig. 1, according to the embodiment of the utility model provides a wind turbine generator system's torsion cable protection system, including pencil 2 and support 5, the upper end ligature of pencil 2 is on cable 1, the lower extreme of pencil 2 runs through downwards be connected with pendulum 3 behind the support 5, fixedly connected with on the support 5 with the corresponding limit switch 4 of pendulum 3, limit switch 4 connects wind turbine generator system's major control system.

In an embodiment of the present invention, the bracket 5 is provided with a circular hole through which the wire harness 2 can pass.

In a specific embodiment of the present invention, the bracket 5 is fixedly connected to the tower ladder 6 of the wind turbine.

In a specific embodiment of the present invention, the limit switch 4 is a micro switch.

In a specific embodiment of the present invention, the master control system is further connected to a yaw cable twisting sensor.

For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention will be described in detail through specific use modes.

Wind turbine generator system turn round and hold protection system add one set of monitoring system on former wind turbine generator system driftage is turned round the basis of seizing the sensor for realize driftage and turn round the two monitoring and the protection of seizing, turn round the accuracy and the reliability of seizing with the guarantee driftage, reduce the harm that the cable caused because of transfiniting. The device mainly comprises a wire harness 2, a pendulum 3, a limit switch 4 and a bracket 5.

The upper end ligature of pencil 2 is fixed on former cable 1, drives pencil 2 winding by cable 1 is rotatory to promote pendulum 3's height, when reaching the settlement and wreathing the value, pendulum 3 is promoted to limit switch 4's position, and triggers limit switch 4, and limit switch 4 transmission signal gives the master control system, realizes alarming function, and limit switch 4's signal is the optional signal of normally opening/normally closed. And after the wind turbine generator gives an alarm, reverse cable breaking is carried out, the height of the pendulum bob 3 is reduced, and after the pendulum bob leaves the limit switch 4, the master control system cannot receive a signal, so that the alarm is automatically released. Limit switch 4 installs on support 5, and support 5 is fixed on tower section of thick bamboo cat ladder 6. The position of the bracket 5 can be selected according to the actual situation on site, so that the flexibility and the convenience of installation are improved.

During specific use, when the cable 1 rotates along with the cabin, the wire harness 2 can be driven to rotate and be wound on the cable 1, the pendulum bob 3 fixed on the wire harness 2 can be pulled and lifted by the wire harness 2, the winding length of the wire harness 2 can be set according to the twisting requirement of the cable 1, and therefore the lifting height of the pendulum bob 3 is determined. When the pendulum bob 3 rises to the position of the limit switch 4, the limit switch 4 can be triggered, the limit switch 4 transmits a signal to the main control system, and therefore an alarm function is achieved, after the alarm is triggered, the main control system executes reverse cable clearing, the pendulum bob 3 descends, the limit switch 4 resets, and the alarm is automatically relieved.

In conclusion, by means of the technical scheme of the utility model, the material is made of common material products, which is convenient for purchase and replacement; the fixed position of the bracket can be selected, and the installation is flexible and convenient; simple structure, maneuverability is strong, can effectively monitor the cable angle of torsion to can twist with driftage and take the sensor to use simultaneously, realize cable monitoring dual fail-safe, reduce the risk of cable transfinite damage.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a wind turbine generator system's twisting cable protection system, its characterized in that includes pencil (2) and support (5), the upper end ligature of pencil (2) is on cable (1), the lower extreme of pencil (2) runs through downwards be connected with pendulum (3) behind support (5), fixedly connected with on support (5) with corresponding limit switch (4) of pendulum (3), limit switch (4) are connected wind turbine generator system's major control system.

2. The twisting cable protection system of the wind turbine generator according to claim 1, wherein the bracket (5) is provided with a circular hole through which the wiring harness (2) can pass.

3. The twisting cable protection system for the wind turbine generator according to claim 1, wherein the bracket (5) is fixedly connected to a tower ladder (6) of the wind turbine generator.

4. The twisting cable protection system for wind turbines according to claim 1, characterized in that the limit switch (4) is a microswitch.

5. The twisting cable protection system for the wind turbine generator according to claim 1, wherein the master control system is further connected with a yaw twisting cable sensor.

Images