CN218325104U

CN218325104U - Fan set blade lightning protection device

Info

Publication number: CN218325104U
Application number: CN202220972520.9U
Authority: CN
Inventors: 张国辉; 李广海; 王娟娟; 于洋; 王立明; 穆恩元
Original assignee: Zhongke Wind Power Tongliao Co ltd
Current assignee: Zhongke Wind Power Tongliao Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2023-01-17
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a fan unit blade lightning protection device, which comprises a fixed bracket, a grounding ring and a grounding ring extension plate; the fixed bolster is used for the strutting arrangement component, distance 3mm between fixed bolster and the bearing, the utility model relates to a lightning protection device technical field possesses following beneficial effect: the original elastic rope and a grounding wire are eliminated, a grounding ring is additionally arranged on the inner ring of the bearing and connected with a blade grounding copper wire, a round copper grounding device is additionally arranged and connected with a hub blade lock, the electric conduction function is realized through the sliding friction of two round copper and the grounding ring, the service life of the round copper can reach 3-5 years, and the grounding ring is additionally arranged on the inner side of the whole blade bearing and connected with the grounding ring through bolts, nuts and the like; two round copper grounding devices are additionally arranged at the position of the hub blade locking device and are in contact with the grounding ring, so that the lightning protection effect of the blade is achieved; this scheme cancellation stretch cord, the thunder and lightning passes through ground ring and round copper earthing device and gets into wheel hub, can effectively protect the bearing.

Description

Fan set blade lightning protection device

Technical Field

The utility model relates to a lightning protection device technical field specifically is for fan unit blade lightning protection device.

Background

The 1.5MW fan unit is directly in butt joint connection with the embedded bolt, and the root of the lightning protection wire is in a bending state. In the operation process, the blade frequently opens and closes the propeller, and the root of the blade rotates or shakes to generate torsion and tension, so that the lightning protection wire or the elastic rope is easily broken from the root, and the lightning protection system of the fan fails. The lightning protection line is broken to cause the following influences on the operation of the fan: the broken lightning protection wire is often jammed to the position of the limit switch, so that the variable-pitch fault is caused and the machine is stopped; the broken lightning protection wire residues contain a large amount of copper wire fragments which possibly enter the control cabinet to cause short circuit of components in the cabinet, so that potential safety hazards exist; after the lightning protection wire is broken, the lightning protection system of the fan blade fails, and the lightning stroke hidden danger of the blade exists in a thunderstorm season; lightning protection line, stretch cord frequently damage and increase fan operation cost, cause the generated energy loss to there is the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model discloses a fan unit blade lightning protection device is realized through the following technical scheme, including fixed bolster, ground ring and ground ring extension plate; the lightning protection device is characterized in that the fixing support is used for supporting a device element, the distance between the fixing support and the bearing is 3mm, the grounding ring is tightly attached to the inner cylindrical surface of the variable pitch bearing, an original lightning protection wire clip of the blade is removed, the blade is rotated by 90 degrees and is connected with the grounding ring extending plate, the lightning protection wire can be stably prevented from being broken in the operation process in two modes of bonding or hinge tensioning in the process, the fixing support is provided with a fixing connection structure, the fixing support is provided with a grounding ring sensing structure, and the grounding ring extending plate is provided with a grounding wire fixing structure.

Wherein, fixed connection structure includes: the nut fixing pipe is arranged in the hexagonal head full bolt;

the fixed orifices are arranged on the fixed support, the nut fixing pipe is arranged in the fixed orifices, the hexagonal nuts are arranged on the nut fixing pipe, and the hexagonal head full bolts are arranged on the fixed support.

Preferably, the fixing holes are arranged in a strip-shaped hole.

Preferably, the grounding ring is provided with a contact hole.

Preferably, the fixed support is provided with a connecting sleeve.

Preferably, the ground ring sensing structure includes: a guide screw, a spring and a copper pin;

the guide screw is installed in a connecting sleeve on the fixed support, the spring is sleeved on the guide screw, and the copper pin is installed in the connecting sleeve and connected with the guide screw.

Preferably, the ground wire fixing structure includes: the wire nose, the grounding wire and the outer hexagon bolt;

the wire nose is sleeved on the copper pin, the grounding wire is installed on the wire nose, and the outer hexagon bolt is installed on the wire nose at the other end of the grounding wire and used for fixing one grounding end of the grounding wire.

Advantageous effects

The original elastic rope and a grounding wire are eliminated, a grounding ring is additionally arranged on the inner ring of the bearing and connected with a blade grounding copper wire, a round copper grounding device is additionally arranged and connected with a hub blade lock, the electric conduction function is realized through the sliding friction of two round copper and the grounding ring, the service life of the round copper can reach 3-5 years, and the grounding ring is additionally arranged on the inner side of the whole blade bearing and connected with the grounding ring through bolts, nuts and the like; two round copper grounding devices are additionally arranged at the position of the hub blade locking device and are in contact with the grounding ring, so that the lightning protection effect of the blade is achieved; according to the scheme, the elastic rope is omitted, and thunder and lightning enters the hub through the grounding ring and the round copper grounding device, so that the bearing can be effectively protected.

Drawings

Fig. 1 is the utility model discloses fan unit blade lightning protection device's three-dimensional structure schematic diagram.

Fig. 2 is the utility model discloses fan unit blade lightning protection device's ground ring three dimensional structure schematic diagram.

Fig. 3 is the utility model discloses a fan group blade lightning protection device's main view structure schematic diagram.

FIG. 4 is a schematic view of the overlooking structure of the lightning protection device for fan unit blades

FIG. 5 is a side view schematic structure of fan unit blade lightning protection device

Fig. 6 is a schematic diagram of the connection of the grounding ring of the lightning protection device for the fan assembly blade

In the figure: 1. fixing a bracket; 2. a ground ring; 3. the grounding ring extends out of the plate; 4. a fixing hole; 5. a nut fixing tube; 6. a hexagonal nut; 7. a hexagon head full bolt; 8. a lead screw; 9. a spring; 10. a copper pin; 11. a wire nose; 12. a ground line; 14. an outer hexagon bolt;

Detailed Description

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution.

Example 1: referring to fig. 1-6, the present invention provides a lightning protection device for a fan assembly blade, which comprises a fixing bracket, a grounding ring and a grounding ring extension plate; the lightning protection device is characterized in that the fixing support is used for supporting a device element, the distance between the fixing support and the bearing is 3mm, the grounding ring is tightly attached to the inner cylindrical surface of the variable pitch bearing, an original lightning protection wire clip of the blade is removed, the blade is rotated by 90 degrees and is connected with the grounding ring extension plate, the lightning protection wire can be stably prevented from being broken in the operation process in two modes of bonding or hinge tensioning in the process, the fixing support is provided with a fixing connection structure, the fixing support is provided with a grounding ring sensing structure, and the grounding ring extension plate is provided with a grounding wire fixing structure.

Wherein, fixed connection structure includes: the device comprises a fixing hole, a nut fixing pipe, a hexagon nut and a hexagon head full bolt;

The hexagonal head full bolt is used for fixing the front part of the fixing support.

Example 2: referring to fig. 1-4, the fixing holes are arranged as bar-shaped holes.

It should be noted that the strip-shaped fixing hole is used for adjusting the fixing position of the nut fixing tube.

Example 3: referring to fig. 1-5, the grounding ring has a contact hole.

Note that the contact hole is used for contact of the copper pin with the ground ring.

Example 4: referring to fig. 1-2, a connecting sleeve is disposed on the fixing bracket.

It should be noted that the connecting sleeve is used to support the sensing structure element.

Example 5: referring to fig. 1-3, the ground ring sensing structure includes: a guide screw, a spring and a copper pin;

It should be noted that the lead screw can push the copper pin to extend into the contact hole, and contact with the grounding ring, and the spring can make the copper pin restore to the original position.

Example 6: referring to fig. 1-5, the grounding wire fixing structure includes: the wire nose, the grounding wire and the outer hexagon bolt;

The wire nose is used for connecting the grounding wire, so that the grounding wire can be prevented from being broken compared with the situation that the grounding wire is directly connected to a copper pin, and the outer hexagon bolt is used for fixing the other end of the grounding wire on the bearing.

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

Claims

1. The lightning protection device for the fan unit blade comprises a fixed support, a grounding ring and a grounding ring extension plate; the lightning protection device is characterized in that the fixed support is used for supporting a device element, the distance between the fixed support and the bearing is 3mm, the grounding ring is tightly attached to the inner cylindrical surface of the variable-pitch bearing, an original lightning protection wire clip of the blade is removed, and the blade is rotated by 90 degrees and is connected with a grounding ring extension plate, the lightning protection wire can be ensured to be stable and not to be broken in the operation process by adopting two modes of bonding or hinge tensioning in the process, the fixed support is provided with a fixed connection structure, the fixed support is provided with a grounding ring sensing structure, and the grounding ring extension plate is provided with a grounding wire fixing structure;

the hexagonal head full-bolt-type hexagonal socket is characterized in that the fixing hole is formed in the fixing support, the nut fixing pipe is installed in the fixing hole, the hexagonal nut is installed on the nut fixing pipe, and the hexagonal head full-bolt is installed on the fixing support.

2. A fan unit blade lightning protection device according to claim 1, wherein the fixing holes are provided as strip-shaped holes.

3. The fan unit blade lightning protection device of claim 1, wherein the grounding ring is provided with a contact hole.

4. A fan unit blade lightning protection device according to claim 1, characterized in that a connection sleeve is provided on the fixing bracket.

5. A fan pack blade lightning protection device according to claim 1, wherein the ground ring sensing structure includes: a guide screw, a spring and a copper pin;

6. A fan unit blade lightning protection device according to claim 1, wherein the ground wire attachment structure includes: the wire nose, the grounding wire and the outer hexagon bolt;

wire nose suit is on the copper pin, the earth connection is installed on the wire nose, outer hex bolts installs on the other end wire nose of earth connection for the ground connection one end of fixed earth connection.