CN220829544U - Wind turbine generator system blade transition resistance detection device - Google Patents

Abstract

The utility model discloses a wind turbine generator blade transition resistance detection device, which relates to the technical field of wind turbine generator blade tip resistance detection, in particular to a wind turbine generator blade transition resistance detection device, comprising a support ring, wherein the bottom of the support ring is connected with a plurality of first connecting strips which are annularly arranged; a plurality of second connecting strips are arranged outside the first connecting strips, each second connecting strip is annularly distributed outside a space surrounded by the first connecting strips, and the second connecting strips are connected with the first connecting strips, so that the second connecting strips and the first connecting strips form a net bag; the device further comprises a second pull rope, one end of the second pull rope is symmetrically connected with a plurality of first pull ropes, and the other end of the first pull rope is symmetrically connected to the edge of the support ring. When the novel elastic net bag is used, the top of the net bag is supported by the supporting ring, so that the top of the net bag can be prevented from being kept in an opening shape, the deformation of the top of the net bag is avoided, the net bag has a certain elastic function, and the net bag can be tightly wrapped on the blade tips.

Description

Wind turbine generator system blade transition resistance detection device

Technical Field

The utility model relates to the technical field of fan blade tip resistance detection, in particular to a wind turbine generator blade transition resistance detection device.

Background

The green power generation and cargo wind turbine generator generates power, and the accident of cabin ignition caused by lightning strike happens in the industry, and the main reason is that the lightning protection grounding systems of the wind turbine generator blade, the cabin and other complete machines do not meet the lightning protection requirement. At present, lightning protection detection work carried out by a station is mainly concentrated on the grounding resistance of a grounding grid at the bottom of a fan tower to the ground, a hanging basket is needed to be used for monitoring a lightning protection system of the whole machine, the operation type is primary high risk, and the construction cost and difficulty are high. Therefore, we propose a wind turbine blade transition resistance detection device.

Disclosure of utility model

Aiming at the defect that a cable at the tip of a fan blade cannot be fixed in the conventional fan blade grounding resistance test operation, the utility model provides a wind turbine generator blade transition resistance detection device which has the advantage that the blade tip is arranged in a string bag, and solves the problems in the prior art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the wind turbine generator blade transition resistance detection device comprises a support ring, wherein the bottom of the support ring is connected with a plurality of first connecting strips which are annularly arranged;

A plurality of second connecting strips are arranged outside the first connecting strips, each second connecting strip is annularly distributed outside a space surrounded by the first connecting strips, and the second connecting strips are connected with the first connecting strips, so that the second connecting strips and the first connecting strips form a net bag;

the device further comprises a second pull rope, one end of the second pull rope is symmetrically connected with a plurality of first pull ropes, and the other end of the first pull rope is symmetrically connected to the edge of the support ring.

Preferably, the outer side edge of the supporting ring is symmetrically connected with a plurality of connecting rings, and the bottom of the first pull rope is connected in the connecting rings.

Preferably, the outer edge of the support ring is further provided with a plurality of first energizing rings.

Preferably, the net bag is in a horn shape; the bottom of first connecting strip is equipped with the arc casing that the opening set up, and the top edge of arc casing links to each other with the bottom of first connecting strip respectively.

Preferably, the bottom of the arc-shaped shell is connected with two second electrifying rings which are arranged up and down.

Preferably, the support ring, the second connecting strip and the first connecting strip are all made of conductive materials.

Compared with the prior art, when the novel elastic net bag is used, the top of the net bag is supported by the supporting ring, so that the top of the net bag can be prevented from being kept in an opening shape, the top of the net bag is prevented from deforming, the net bag has a certain elastic function, and the net bag can be tightly wrapped on the blade tip.

Drawings

Fig. 1 is a schematic diagram of a specific structure of a net bag according to the present utility model.

Fig. 2 is a schematic view of the connection structure of the string bag and the pull string.

Fig. 3 is a front view of the net bag of the present utility model.

FIG. 4 is a schematic view of the connection between the net bag and the fan blade.

In the figure: 1. a support ring; 2. a connecting ring; 3. a second connecting bar; 4. a first connecting bar; 5. a first energizing ring; 6. an arc-shaped housing; 7. a second energizing ring; 8. a first pull rope; 9. and a second pull rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a technical solution: the wind turbine generator blade transition resistance detection device comprises a support ring 1, wherein the bottom of the support ring 1 is connected with a plurality of first connecting strips 4 which are annularly arranged;

A plurality of second connecting strips 3 are arranged outside the first connecting strips 4, each second connecting strip 3 is annularly distributed outside a space surrounded by the first connecting strips 4, the second connecting strips 3 are connected with the first connecting strips 4, and the second connecting strips 3 and the first connecting strips 4 form a net bag (the specific shape is shown in figure 1);

the device further comprises a second pull rope 9, one end of the second pull rope 9 is symmetrically connected with a plurality of first pull ropes 8, and the other end of the first pull ropes 8 is symmetrically connected to the edge of the support ring 1.

Specifically, as shown in fig. 2, the number of the first pull ropes 8 may be three, when the operator holds the second pull ropes 9, the support ring 1 is simultaneously pulled by the three first pull ropes 8, and the support performance is good.

As shown in fig. 2, the outer side edge of the support ring 1 is symmetrically connected with a plurality of connecting rings 2, and the bottom of the first pull rope 8 is connected in the connecting rings 2, so that the first pull rope 8 is convenient to detach and install.

In order to better wrap the end parts of the fan blades by the net bag, the net bag can be designed into a horn shape consistent with the shape of the blade tips; when the blade tip is arranged in the net bag, the net bag can be tightly wrapped at the end part of the blade;

The bottom of first connecting strip 4 is equipped with the arc casing 6 that the opening set up, and the top edge of arc casing 6 links to each other with the bottom of first connecting strip 4 respectively, in order to prevent string bag bottom by the apex puncture, so the arc casing 6 that sets up can offset with the apex, lets string bag atress more urgent more even.

As shown in fig. 1 and 2, the outer edge of the supporting ring 1 is further provided with a plurality of first energizing rings 5, and the bottom of the arc-shaped housing 6 is connected with a second energizing ring 7, and when wiring, two wiring modes can be adopted in the utility model, wherein the first mode is to connect the cable for testing to the first energizing ring 5, and the second mode is to connect the cable for testing to the second energizing ring 7.

As shown in fig. 1, the second energizing rings 7 are two and arranged up and down.

It should be emphasized that in the present utility model, the supporting ring 1, the second connecting strip 3, the first connecting strip 4, the arc-shaped housing 6, the connecting ring 2 and the first energizing ring 5 are made of conductive materials, such as copper alloy, aluminum alloy, etc., and in the present utility model, the material is preferably copper alloy, so that the weight of the whole net bag can be increased, the influence of air flow on the net bag can be reduced, and the resistance can be reduced to the minimum, wherein the second connecting strip 3 and the first connecting strip 4 are metal wires.

Specifically, when the wind turbine blade grounding resistance testing device is used, in the wind turbine blade grounding resistance testing operation, a soft rope (namely a first pull rope and a second connecting rope) is used as a stress rope, so that a testing cable is connected to a connecting ring, the stress of the testing cable is avoided, cabin personnel put down a main rope to adjust the positions of a string bag and a blade tip, and the string bag is lifted upwards after alignment;

At this time, the ground personnel can adjust through the wind-collecting rope, the wind-collecting rope can be connected in other connecting rings 2 or second electrifying rings 7 (the wind-collecting rope is an insulating rope and is connected in the second electrifying ring 7 at the lowest part), the wind-collecting rope is positioned at the position indicated by arrow A in fig. 4, the operators in the fan and the ground operators are cooperated together, the net bag and the test cable are pulled to the blade tip, the net bag is fully contacted with the blade tip, and the test instrument is placed on the tower foundation of the fan for testing.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The wind turbine generator blade transition resistance detection device is characterized by comprising a support ring (1), wherein the bottom of the support ring (1) is connected with a plurality of first connecting strips (4) which are annularly arranged;

A plurality of second connecting strips (3) are arranged outside the first connecting strips (4), each second connecting strip (3) is annularly distributed outside a space surrounded by the first connecting strips (4), and the second connecting strips (3) are connected with the first connecting strips (4), so that the second connecting strips (3) and the first connecting strips (4) form a net bag;

The device further comprises a second pull rope (9), one end of the second pull rope (9) is symmetrically connected with a plurality of first pull ropes (8), and the other end of the first pull ropes (8) is symmetrically connected to the edge of the support ring (1).

2. The wind turbine generator system blade transition resistance detection device according to claim 1, wherein a plurality of connecting rings (2) are symmetrically connected to the outer side edge of the supporting ring (1), and the bottom of the first pull rope (8) is connected to the inside of the connecting rings (2).

3. Wind turbine blade transition resistance detection device according to claim 1, characterized in that the outer side edge of the support ring (1) is further provided with a plurality of first energizing rings (5).

4. The wind turbine blade transition resistance detection device according to claim 1, wherein the net bag is horn-shaped; the bottom of first connecting strip (4) is equipped with arc casing (6) that the opening set up, and the top edge of arc casing (6) links to each other with the bottom of first connecting strip (4) respectively.

5. The wind turbine generator system blade transition resistance detection device according to claim 4, wherein the bottom of the arc-shaped shell (6) is connected with second energizing rings (7), and the second energizing rings (7) are arranged up and down.

6. Wind turbine blade transition resistance detection device according to claim 1, characterized in that the support ring (1), the second connection strip (3) and the first connection strip (4) are all made of conductive material.