CN215934033U

CN215934033U - Special slip ring for 2.0MW unit

Info

Publication number: CN215934033U
Application number: CN202122546926.9U
Authority: CN
Inventors: 尹双寅; 岳军
Original assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Current assignee: DALIAN EASY SOUND ELECTROMECHANIC CO LTD
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-03-01
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a special slip ring for a 2.0MW unit, which comprises a self-cleaning structure, wherein the self-cleaning structure comprises self-cleaning brushes, a self-cleaning bracket and a self-cleaning bottom plate, the lower half ends of a plurality of self-cleaning brushes are fixedly arranged on the self-cleaning bracket, the self-cleaning bracket is fixed on the self-cleaning bottom plate, the self-cleaning bottom plate is arranged on a frame, after the self-cleaning structure is adopted, the self-cleaning structure can continuously clean the surface of a ring channel along with the rotation of a main shaft in the running process of equipment, and can remove abrasive dust generated by contact friction at any time, so that a friction pair is always in a better running state, the accumulation phenomenon caused by the attachment of the abrasive dust on the surface of the ring channel is avoided, the stability of current, communication and signal transmission of the slip ring is greatly improved, the service life of the friction pair is effectively prolonged, and the unit fault shutdown caused by poor contact of the friction pair is greatly reduced, the generating efficiency of the wind turbine generator can be effectively guaranteed, and a lot of maintenance cost of the slip ring can be saved.

Description

Special slip ring for 2.0MW unit

Technical Field

The utility model relates to the technical field of wind generating sets, in particular to a special slip ring for a 2.0MW unit.

Background

With the continuous development of wind power generation systems in China, the wind power industry has higher requirements on the reliability and the service life of the slip ring, and the slip ring is used as an important component of a wind power generator to realize the electrical connection of signals of a power supply, temperature feedback, a control bus and the like of the system between an execution mechanism and a control system. The slip ring product at the present stage is in a contact friction structure, so that abrasive dust is easily generated, and the influence of the abrasive dust on the service life and the communication stability is large, so that the quality of the slip ring is influenced. At present, contact slip ring products in wind power industry at home and abroad have various friction pairs. Structurally, the device comprises a noble metal contact matched flat ring surface, a single alloy wire matched V-shaped ring surface, a carbon brush matched flat ring surface, a plurality of brush wires matched U-shaped grooves and the like; the material is mainly gold alloy and silver alloy, and a friction pair of self-lubricating trace elements is added. The vice change of no matter structurally or on the material of friction all can produce the abrasive dust at the operation in-process, and long-time operation back, the abrasive dust can pile up on the ring road surface, and light then can make wind generating set frequently report the trouble, and heavy then can cause the vice virtual connecing of friction, directly burns out the sliding ring, and does not have related structure yet at present and clear up the abrasive dust.

Disclosure of Invention

The utility model provides a special slip ring for a 2.0MW unit, which is used for overcoming the defect that after abrasion chips are generated due to abrasion of a friction pair, the abrasion chips remain on the surface of a ring channel, so that the contact part of the friction pair is influenced by foreign matters, and the service life and the communication stability of the slip ring are greatly reduced.

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

the utility model provides a special sliding ring of 2.0MW unit, includes self-cleaning structure, self-cleaning structure includes self-cleaning brush, self-cleaning support and self-cleaning bottom plate, and is a plurality of the second half end of self-cleaning brush is arranged fixed mounting in proper order on the self-cleaning support, the self-cleaning support is fixed on the self-cleaning bottom plate, the self-cleaning bottom plate is installed on the frame.

Furthermore, a dust collecting groove is arranged below the self-cleaning bottom plate, and the self-cleaning bottom plate is fixed on the frame through bolts.

Furthermore, the end part of the self-cleaning brush is made of soft and insulating materials.

Has the advantages that: according to the special slip ring for the 2.0MW unit, the self-cleaning structure is designed, in the operation process of the slip ring, the self-cleaning structure can move relative to a loop, the surface of the loop is cleaned synchronously, abrasive dust generated by contact type friction is removed in real time, a friction pair is always in a better operation state, abrasive dust accumulation caused by attachment of the abrasive dust on the surface of the loop is avoided, the stability of current, communication and signal transmission of the slip ring is improved, unit fault shutdown caused by poor contact of the friction pair is reduced, the power generation efficiency of the wind turbine unit is guaranteed, the maintenance cost of the slip ring is saved, and the service life of the friction pair is effectively prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 cross-sectional view of a slip ring dedicated for a 2.0MW unit disclosed in the present invention;

FIG. 2 is an overall installation schematic diagram of a special slip ring for a 2.0MW unit disclosed by the utility model;

in the figure: 1. self-cleaning brush, 2, self-cleaning support, 3, self-cleaning bottom plate, 4, frame, 5, self-cleaning structure.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1 and 2, the slip ring special for the 2.0MW unit comprises a self-cleaning structure 5, wherein the self-cleaning structure 5 comprises a self-cleaning brush 1, a self-cleaning support 2 and a self-cleaning bottom plate 3, the lower half ends of the self-cleaning brush 1 are sequentially arranged and fixedly mounted on the self-cleaning support 2, the self-cleaning support 2 is fixed on the self-cleaning bottom plate 3, the self-cleaning bottom plate 3 is mounted on a frame 4, and the self-cleaning structure is mounted on the frame at the stator side of the slip ring, so that the structure is suitable for all contact type slip rings and friction pairs, can effectively clean the surface of a ring road and avoids accumulation of abrasive dust. In the slip ring working process, the self-cleaning structure is installed on a frame of a slip ring fixing part, the end part of the self-cleaning brush is overlapped on the surface of a ring channel, in the rotating process of a main shaft, the self-cleaning structure moves relative to the surface of the ring channel, so that the surface of the ring channel can be cleaned, abrasive dust generated by friction pair abrasion can be scraped off by the self-cleaning brush and falls on a self-cleaning bottom plate, the surface of the ring channel is cleaned at any time through the self-cleaning structure, the abrasive dust can not be remained on the surface of the ring channel, therefore, the contact part of the friction pair is free from the influence of foreign matters, the service life and the communication stability are ensured.

In a specific embodiment, a dust collecting groove is arranged below the self-cleaning bottom plate 3, the self-cleaning bottom plate 3 is fixed on the frame 4 through bolts, and the dust collecting groove is arranged below the self-cleaning bottom plate 3, so that the self-cleaning bottom plate 3 has an abrasive dust collecting effect, the cleaned abrasive dust can fall into the dust collecting groove at the bottom of the self-cleaning bottom plate 3, the situation that the cleaned abrasive dust is scattered freely and pollutes the inside of the cavity is avoided, and the electrical performance of the slip ring cannot be affected.

In a specific embodiment, the end of the self-cleaning brush 1 is made of a soft and insulating material, such as a brush or a fiber brush, and the fixed end of the lower part is made of a hard material, such as an aluminum alloy material, so that the annular surface is not damaged while annular abrasive dust is cleaned, and the communication short circuit of adjacent channels is avoided.

Example two

The difference between the present embodiment and the first embodiment is that the self-cleaning brush 1 is fixedly connected to the self-cleaning bracket 2 by bolts, and the self-cleaning bracket 2 is fixedly connected to the self-cleaning bottom plate 3 by bolts. The other parts of the present embodiment are the same as the first embodiment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The special slip ring for the 2.0MW unit is characterized by comprising a self-cleaning structure (5), wherein the self-cleaning structure (5) comprises self-cleaning brushes (1), a self-cleaning support (2) and a self-cleaning bottom plate (3), the lower half ends of the self-cleaning brushes (1) are sequentially arranged and fixedly mounted on the self-cleaning support (2), the self-cleaning support (2) is fixed on the self-cleaning bottom plate (3), and the self-cleaning bottom plate (3) is mounted on a frame (4).

2. 2.0MW unit-specific slip ring according to claim 1, characterized in that a dust collecting groove is arranged below the self-cleaning bottom plate (3), and the self-cleaning bottom plate (3) is fixed on the frame (4) by bolts.

3. The slip ring special for the 2.0MW unit according to claim 2, wherein the end of the self-cleaning brush (1) is made of soft and insulating material.