CN211481104U - Installation device for collecting ring of generator of wind turbine generator - Google Patents

Abstract

The utility model provides a wind turbine generator system generator collecting ring installation device, including clamping screw, propulsion bolt, fixed disc, disc cover, clamping screw one end is fixed on the generator shaft, and the other end is fixed on the fixed disc, the disc cover is cavity ring structure, a pot head is established on the collecting ring to disc cover, and another pot head is established on fixed disc, it installs on fixed disc to impel the bolt. The utility model discloses to install the three clamping screw who installs respectively in the past on a fixed disc in unison, avoid the injury to generator shaft and epaxial fixed orifices screw thread, the four-point location help maintainer who utilizes propulsion bolt and fixed disc simultaneously adjusts the balance of collecting ring in the installation, reduce the injury to the collecting ring in the installation, alleviate maintainer's intensity of labour, utilize the disc cover to be acted on the atress on the conducting ring that can bear the effort, further avoid the injury to the collecting ring, the work efficiency is improved, and the work intensity is lightened.

Description

Installation device for collecting ring of generator of wind turbine generator

Technical Field

The utility model belongs to the technical field of wind turbine generator set generator collecting ring installation appurtenance, concretely relates to wind turbine generator set generator collecting ring installation device.

Background

Wind energy is adopted as clean energy and is touted by countries all over the world, but because of the instability of the wind energy and the requirement of capturing the maximum wind energy, a double-fed type wind generating set is provided, and in the process that the wind speed and the rotating speed are constantly changed, in order to realize the tracking and capturing of the maximum energy of the wind energy and meet the requirement of a power grid, the double-fed type wind generating set usually adopts a variable speed constant frequency operation mode.

This operation mode requires that the rotor ac excitation power supply not only have good current transformation input and output characteristics, but also have the capability of bidirectional energy flow. In the prior art, a frequency converter provided with an IGBT device is used as an excitation power supply of the frequency converter, excitation current is provided for a rotor winding of a generator, and directional vector control is realized on a stator. The control current is led in by the collector ring of the generator to realize the conversion among the sub-synchronous, synchronous and super-synchronous operation modes, so the collector ring is used as an important large component on the fan, and the installation precision of the collector ring has certain requirements.

According to statistics of the national energy agency, 34485 wind turbines with installed capacity of 44733.29 megawatts are installed in a cumulative manner nationwide before 2010, the service life of the wind turbines is nearly half by 2019, most parts such as collecting rings need to be replaced, and when the collecting rings are replaced and installed, the collecting rings are difficult to install due to the influence of the space of a fan, time and labor are wasted by personnel, and damage is easily caused.

In the prior art, three fixing holes on a generator shaft are utilized, a part of a screw is brought into the fixing holes on the generator shaft, then double nuts are adjusted to determine a stress point, then the three fixing holes on the generator shaft are utilized to forcibly screw back bolts, the stress point is transferred onto the fixing holes of the generator shaft, a collector ring is brought into the fixing holes, and finally the three bolts are used to fixedly connect the collector ring with the generator shaft, but the method has the following defects: 1. the fixing hole on the generator shaft is a stress point, after the generator shaft is used for several times, the thread of the fixing hole is damaged, so that the fixing of the collecting ring is unstable, meanwhile, the attached encoder fixing support is easy to slip and fall off, the fixing hole is arranged on the generator rotor shaft and cannot be simply replaced or processed, and the replacement and repair are troublesome after the thread is damaged; 2. the double nut is fixed by a thread breaking method, so that the threads of the screw can be broken in use, the threads of the whole screw are completely broken after the double nut is used for several times, the screw needs to be machined again, and meanwhile, when the double nut is fixed, the situation that the screw is not fixed firmly due to the fact that the screw is flicked and hurts people exists; 3. the hole depth of the fixing hole is limited, the collecting ring can be installed only by repeating the method for 5 times or more, and personnel wastes time and labor and has great damage to the fixing shaft; 4. the three stress points are adopted for installation, so that the collecting ring is easy to deflect due to overlarge stress on one side in the installation process, the collecting ring is more difficult to install after deflection, and meanwhile, the position of a bolt is inconvenient to observe and is inconvenient to adjust; 5. the double-nut fixing part is in the bolt screwing process, the nut can rotate correspondingly, damage is caused to three fixing points of the collecting ring, the installation of the encoder fixing support is unbalanced, and faults are easily reported in the power generation process in the later period.

Disclosure of Invention

The utility model provides a wind turbine generator system generator collecting ring installation device ensures that collecting ring installation balance targets in place, avoids the installation accuracy decline problem that the unbalance leads to, and has effectively avoided the damage to the generator epaxial fixed orifices screw thread.

The technical scheme of the utility model is that: the utility model provides a wind turbine generator electricity generation machine collector ring installation device, includes clamping screw, propulsion bolt, fixed disc, disc cover, clamping screw one end is fixed on the generator shaft, and the other end is fixed on the fixed disc, the disc cover is cavity ring structure, a disc cover pot head is established on the collector ring, and another pot head is established on the fixed disc, the propulsion bolt is installed on the fixed disc.

The scheme is further that the fixing screw comprises a screw rod fully distributed with threads and 3 nuts sleeved on the screw rod.

The scheme is further, advance the bolt including advancing screw rod, connecting pin, handle, it is the sphere face to advance screw rod one end, and the other end passes through connecting pin and handle connection, the handle is L type structure.

The scheme is further that three fixing screw holes are symmetrically formed in the positions, close to the circle center, of the fixing disc, and four pushing bolt holes are symmetrically formed in the positions, close to the circumference, of the fixing disc.

The scheme is further that threads are arranged in the propelling bolt holes.

Further, the fixing screw hole is not provided with threads.

The principle of the utility model is that: the three fixing screws which are respectively installed in the past are uniformly installed on a fixing disc, so that damage to the shaft of the generator and the threads of the fixing hole on the shaft is avoided, meanwhile, the four-point positioning of the pushing bolt and the fixing disc is utilized to help maintenance personnel to adjust the balance of the collecting ring in the installation process, the damage to the collecting ring in the installation process is reduced, the labor intensity of the maintenance personnel is relieved, the disc sleeve is utilized to apply force to the conducting ring capable of bearing the acting force, and the damage to the collecting ring is further avoided.

The utility model has the advantages that: 1. the utility model has simple structure, clear principle and high reliability; 2. the processing and manufacturing process of the utility model is simple, the used material is common steel, and the manufacturing cost is lower; 3. the utility model is convenient to carry and use by the maintenance personnel, and the design of the handle makes the whole installation process not need to use other tools such as a spanner; 4. in the installation process of the utility model, the fixing hole on the generator shaft is not stressed, and the screw hole with higher cost is protected; 5. in the installation process of the utility model, the adjustment can be carried out through the pushing bolts in four directions, so as to ensure the balance problem of the installation of the collecting ring and avoid the problem of the reduction of the installation precision caused by unbalance; 6. in the installation process of the utility model, the collecting ring is effectively protected by the disk sleeve, thus avoiding the damage to the collecting ring during installation; 7. the utility model discloses in the installation, the maintenance personal need not carry out work such as position adjustment repeatedly, has improved work efficiency, has alleviateed working strength.

Drawings

Fig. 1 is a schematic structural view of a collecting ring installation device of a generator of a wind turbine generator set according to the present invention;

fig. 2 is a schematic structural view of a fixing screw of the installation device for a collecting ring of a generator of a wind turbine generator set of the present invention;

fig. 3 is a schematic diagram of a structure of a pushing bolt of a collecting ring mounting device of a generator of a wind turbine generator according to the present invention;

fig. 4 is a schematic structural view of a fixed disc of the installation device for the collecting ring of the generator of the wind turbine generator of the present invention;

fig. 5 is a schematic diagram of a disc sleeve structure of the collecting ring mounting device of the generator of the wind turbine generator of the present invention;

fig. 6 is a schematic view of a connecting structure between a disc sleeve and a fixed disc of the collecting ring mounting device of the generator of the wind turbine generator set of the present invention;

wherein: 1. the generator comprises a generator shaft, 2 parts of a collecting ring, 3 parts of a disc sleeve, 4 parts of a fixing disc, 4-1 parts of a fixing screw hole, 4-2 parts of a propelling bolt hole, 5 parts of a fixing screw, 5-1 parts of a screw, 5-2 parts of a nut, 6 parts of a propelling bolt, 6-1 parts of a propelling screw, 6-2 parts of a connecting pin, 6-3 parts of a handle.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.

The utility model discloses a concrete implementation mode is: as shown in fig. 1-6, a wind turbine generator collector ring installation device includes a fixing screw 5, a pushing bolt 6, a fixing disc 4, and a disc sleeve 3, wherein one end of the fixing screw 5 is fixed on the generator shaft, and the other end is fixed on the fixing disc 4, the disc sleeve 3 is a hollow circular ring structure, one end of the disc sleeve 3 is sleeved on a conducting ring of the collector ring through an insulating ring of the collector ring, and the other end is sleeved on the fixing disc 4 to connect the collector ring and the fixing disc 4, so that the collector ring is driven to push towards the generator shaft when the fixing disc 4 is stressed, and the collector ring can be protected at the same time, and the pushing bolt 6 is installed on the fixing disc 4.

Further in this embodiment, the fixing screw 5 includes a screw 5-1 with full threads and 3 nuts 5-2 sleeved on the screw 5-1, as shown in fig. 2, the fixing disc 4 can be fixed and fine-tuned by using the 3 nuts 5-2 on the fixing screw, when in installation, 2 nuts 5-2 are at one end of the fixing disc 4, and the remaining 1 nut 5-2 is fixed at the other end to form a stress plane parallel to the end face of the generator shaft, and the fixed stress point is on the fixing disc 4, thereby avoiding damage to the threads of the fixing hole on the generator shaft.

In the embodiment, the pushing bolt 6 comprises a pushing screw 6-1, a connecting pin 6-2 and a handle 6-3, the pushing screw 6-1 is made of high-strength steel materials and is fully provided with threads along the length direction, one end of the pushing screw 6-1 is a spherical surface and is used for pushing the collector ring to reduce damage caused by rotation, the other end of the pushing screw is designed to be square and is connected with the handle 6-3 through the connecting pin 6-2, the handle 6-3 is of an L-shaped structure and is opened as shown in fig. 3 when in use, and the pushing screw is folded back to be straight after use and is convenient to carry and is used for being matched with the fixed disc 4 to push the collector ring to a specified position.

In the embodiment, furthermore, three fixed screw holes 4-1 are symmetrically arranged at the position of the fixed disk 4 close to the circle center, four pushing bolt holes 4-2 are symmetrically arranged at the position of the fixed disk 4 close to the circumference, as shown in fig. 4, the fixing screw hole 4-1 is sized and positioned to correspond to 3 fixing holes of the generator shaft, so that the fixing screw 5 connects the generator shaft and the fixing disc 4, the fixing screw hole 4-1 is not threaded, the screw threads are arranged in the propulsion bolt holes 4-2, the size of the propulsion bolt holes 4-2 is determined according to the size of the collecting ring, the four holes are mutually distributed at four positions of an upper position, a lower position, a left position and a right position at 90 degrees, all the holes are provided with threads and are matched with the pushing bolts 6 to push the collecting ring, and the pushed stress points are also arranged on the fixed disc 4 to avoid damage to the threads of the fixed holes.

Further, in this embodiment, as shown in fig. 5 to 6, the size of the disk sleeve 3 is determined according to the size of the collecting ring, the hollow portion just allows the disk sleeve 3 to pass through the insulating ring of the collecting ring, and the disk sleeve 3 sleeves and fits the conductive ring of the collecting ring, so that when the pushing bolt 6 applies force to the fixed disk 4, the disk sleeve 3 transmits the force to the conductive ring portion of the alloy, thereby avoiding damage to the insulating ring, and the presence of the disk sleeve 3 prevents the pushing bolt 6 from damaging the collecting ring.

The utility model discloses a concrete working process is: firstly, one end of each of 3 fixing screw rods 5 is matched with a fixing hole of a generator; then 2 nuts 5-2 are screwed into the screw rods 5-1, the fixed disc 4 is sleeved on the three fixed screw rods 5 through the fixed screw rod holes 4-1, and then the last 1 nut 5-2 is screwed and adjusted, and 3 nuts 5-2 form a reliable plane; then, the disc sleeve 3 is sleeved on the conducting ring of the collecting ring through the fixed disc 4; finally, a pushing bolt 6 is placed in a pushing bolt hole 4-2 of the fixed disc 4, a handle 6-3 of the pushing bolt 6 is opened, the handle 6-3 is slowly shaken, and the pushing bolt 6 is adjusted to enable the disc sleeve 3 to be stressed uniformly; the disc sleeve 3 pushes the collecting ring to reach the designated mounting position in an interference manner, and the mounting process is finished.

While the preferred embodiments of the present invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention by those skilled in the art without departing from the technical solution of the present invention.

Claims (7)

1. The utility model provides a wind turbine generator electricity generation machine collector ring installation device, its characterized in that, includes clamping screw, propulsion bolt, fixed disc, disc cover, clamping screw one end is fixed on the generator shaft, and the other end is fixed on the fixed disc, the disc cover is cavity ring structure, a disc cover pot head is established on the collector ring, and another pot head is established on the fixed disc, the propulsion bolt is installed on the fixed disc.

2. The mounting device for the collecting ring of the generator of the wind turbine generator as claimed in claim 1, wherein the fixing screw comprises a screw with full threads and a nut sleeved on the screw.

3. The mounting device for the collector rings of the generators of the wind turbine generators as claimed in claim 2, wherein the number of the nuts is 3.

4. The mounting device for the collector ring of the generator of the wind turbine generator set according to claim 3, wherein the pushing bolt comprises a pushing screw rod, a connecting pin and a handle, one end of the pushing screw rod is a spherical surface, the other end of the pushing screw rod is connected with the handle through the connecting pin, and the handle is of an L-shaped structure.

5. The mounting device for the collector ring of the generator of the wind turbine generator as claimed in claim 4, wherein the fixing disc is symmetrically provided with three fixing screw holes near the center of a circle, and the fixing disc is symmetrically provided with four pushing bolt holes near the circumference.

6. The mounting device for the collector ring of the generator of the wind turbine generator as claimed in claim 5, wherein the driving bolt hole is internally provided with a thread.

7. The mounting device for the collector ring of the generator of the wind turbine generator as claimed in claim 6, wherein the fixing screw hole is not threaded.

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