CN111322480A

CN111322480A - High-durability rotary joint for wind power generation equipment

Info

Publication number: CN111322480A
Application number: CN202010234274.2A
Authority: CN
Inventors: 周杰; 徐翀; 卢海旭
Original assignee: Tengxuan Technology Co ltd
Current assignee: Tengxuan Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-06-23

Abstract

The invention provides a high-durability rotary joint for wind power generation equipment, which comprises a shell and a copper sleeve fixedly arranged in an inner cavity of the shell, and further comprises a rotating shaft, wherein the rotating shaft is rotatably inserted into the inner cavity of the copper sleeve, and the outer wall of the rotating shaft and the inner wall of the copper sleeve are arranged in a sealing manner; an oil outlet duct is arranged on the shell, and an oil inlet duct is arranged on the rotating shaft; be equipped with the oil duct interface on the copper sheathing, the oil feed oil duct with the oil outlet oil duct passes through the oil duct interface is linked together, through the sealed setting of the hard of micro-gap between pivot and the copper sheathing, compare in the sealed mode of sealing washer among the prior art, sealing performance is better, and leakage quantity is low, has guaranteed the stability of equipment operation, and life is longer.

Description

High-durability rotary joint for wind power generation equipment

Technical Field

The invention relates to the field of hydraulic components, in particular to a high-durability rotary joint for wind power generation equipment.

Background

The rotary joint is a connecting sealing part for inputting fluid medium (liquid, gas, etc.) into rotary equipment from a static pipeline, and is a sealing device for solving running, overflowing, dripping and leaking, saving energy, protecting environment and improving working conditions. The rotary joint in the prior art is generally sealed by a sealing ring, and has the following main defects: the rotary joint can be heated after long-time work, so that the abrasion of the sealing ring is accelerated, the problems of unstable work, oil leakage and the like of a hydraulic system are caused due to the abrasion of the sealing ring, the existing rotary joint sealing ring is difficult to replace, and the production efficiency is influenced.

Disclosure of Invention

The invention aims to solve the technical problem that a rotary joint which is sealed by a sealing ring can be heated after long-time work, so that the abrasion of the sealing ring is accelerated, and the abrasion of the sealing ring can cause the problems of unstable work, oil leakage and the like of a hydraulic system.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-durability rotary joint for wind power generation equipment comprises a shell and a copper sleeve fixedly arranged in an inner cavity of the shell, and further comprises a rotating shaft, wherein the rotating shaft is rotatably inserted into the inner cavity of the copper sleeve, and the outer wall of the rotating shaft and the inner wall of the copper sleeve are arranged in a sealing manner; an oil outlet duct is arranged on the shell, and an oil inlet duct is arranged on the rotating shaft; the copper bush is provided with an oil duct interface, and the oil inlet oil duct is communicated with the oil outlet oil duct through the oil duct interface.

Further: the oil inlet oil duct comprises an oil inlet hole and an oil groove, and the oil inlet hole is arranged on the rotating shaft and is arranged along the axial direction; the oil groove is circumferentially arranged on the outer wall of the rotating shaft, and the oil inlet hole is communicated with the oil groove.

Further: the number of the oil outlet channels, the number of the oil inlet holes and the number of the oil grooves are four, and the four oil inlet holes are uniformly distributed along the circumferential direction; and the four oil grooves are sequentially arranged along the axial direction of the rotating shaft.

Further: the right side of copper sheathing is equipped with the end cover, the end cover is established in the pivot, be equipped with the seal groove along circumference on the inner wall of end cover, be provided with the sealing washer in the seal groove, the sealing washer with the outer wall sealing contact of pivot.

Further: an oil drainage port is formed in the shell, a leakage cavity is formed in the shell and located on the outer side of the left end face and the outer side of the right end face of the copper sleeve, the oil drainage port is communicated with the leakage cavity, an oil seal is arranged at the cavity port of the leakage cavity, and the end cover and the shell are sealed through the oil seal; the shell and the rotating shaft are sealed through the oil seal.

The high-durability rotary joint for the wind power generation equipment has the advantages that the rotary joint for the wind power generation equipment is arranged through hard sealing of the micro-gap between the rotating shaft and the copper sleeve, compared with a sealing mode of a sealing ring in the prior art, the high-durability rotary joint for the wind power generation equipment is better in sealing performance, low in leakage amount, capable of guaranteeing the running stability of the equipment and longer in service life.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of a high durability wind power plant swivel joint of the present invention;

FIG. 2 is a schematic structural view of a high durability rotary joint for a wind power plant of the present invention;

FIG. 3 is a left side view of FIG. 2;

fig. 4 is an enlarged view of a in fig. 2.

In the figure, the oil-gas separator comprises a shell 1, a shell 2, a copper sleeve 3, a rotating shaft 4, an oil outlet oil duct 5, an oil duct interface 6, an oil inlet hole 7, an oil groove 8, an end cover 9, a sealing groove 10, a sealing ring 11, an oil drainage port 12, a leakage cavity 13 and an oil seal.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.

As shown in fig. 1, 2 and 3, the invention provides a high-durability rotary joint for wind power generation equipment, which comprises a housing 1 and a copper bush 2 fixedly installed in an inner cavity of the housing 1, and further comprises a rotating shaft 3, wherein the rotating shaft 3 is rotatably inserted into the inner cavity of the copper bush 2, and the outer wall of the rotating shaft 3 is hermetically arranged with the inner wall of the copper bush 2; an oil outlet duct 4 is arranged on the shell 1, and an oil inlet duct is arranged on the rotating shaft 3; the copper bush 2 is provided with an oil duct interface 5, and the oil inlet duct is communicated with the oil outlet duct 4 through the oil duct interface 5.

In the prior art, the rotary joint can generate heat after working for a long time in a sealing mode of the sealing ring, so that the abrasion of the sealing ring is accelerated, and the problems of unstable working, oil leakage and the like of a hydraulic system are caused by the abrasion of the sealing ring. The hard seal setting in microgap between pivot 3 and copper sheathing 2 compares in prior art through the sealed mode of sealing washer, and sealing performance is better, and it is low and life is longer to let out leakage quantity.

The oil inlet duct comprises an oil inlet hole 6 and an oil groove 7, and the oil inlet hole 6 is arranged on the rotating shaft 3 and is arranged along the axial direction; the oil groove 7 is circumferentially arranged on the outer wall of the rotating shaft 3, and the oil inlet hole 6 is communicated with the oil groove 7. The number of the oil outlet channels 4, the number of the oil inlet holes 6 and the number of the oil grooves 7 are four, and the four oil inlet holes 6 are uniformly distributed along the circumferential direction; four oil grooves 7 are arranged along the axial direction of the rotating shaft 3 in sequence. Four oil ducts are formed by the four oil inlet holes 6 and the four oil grooves 7, a complete oil path is formed between the four oil ducts independently, and then four different oil materials can be introduced simultaneously.

As shown in fig. 4, an end cover 8 is arranged on the right side of the copper bush 2, the end cover 8 is sleeved on the rotating shaft 3, a sealing groove 9 is formed in the inner wall of the end cover 8 along the circumferential direction, a sealing ring 10 is arranged in the sealing groove 9, and the sealing ring 10 is in sealing contact with the outer wall of the rotating shaft 3.

An oil drainage port 11 is formed in the shell 1, a leakage cavity 12 is formed in the shell 1 and located on the outer side of the left end face and the outer side of the right end face of the copper bush 2, the oil drainage port 11 is communicated with the leakage cavity 12, an oil seal 13 is arranged at the cavity opening of the leakage cavity 12, and the end cover 8 and the shell 1 are sealed through the oil seal 13; the shell 1 and the rotating shaft 3 are sealed through the oil seal 13.

Because the rotating shaft 3 and the copper bush 2 are only in a certain clearance, oil seepage cannot be completely avoided, if the oil seepage is too much accumulated for a long time, resistance is formed on the rotating shaft 3, redundant oil can be discharged out of a product from the oil drainage port 11 through the leakage cavity 12, and the stability and the service life of the product are guaranteed.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the term does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a high durability's rotary joint for wind power generation equipment, includes casing (1) and fixed mounting copper sheathing (2) in casing (1) inner chamber, its characterized in that: the rotary joint further comprises a rotating shaft (3), the rotating shaft (3) is rotatably inserted into the inner cavity of the copper sleeve (2), and the outer wall of the rotating shaft (3) and the inner wall of the copper sleeve (2) are arranged in a sealing mode; an oil outlet duct (4) is arranged on the shell (1), and an oil inlet duct is arranged on the rotating shaft (3); the copper bush (2) is provided with an oil duct interface (5), and the oil inlet duct is communicated with the oil outlet duct (4) through the oil duct interface (5).

2. The high durability wind power plant swivel joint of claim 1, wherein: the oil inlet duct comprises an oil inlet hole (6) and an oil groove (7), and the oil inlet hole (6) is arranged on the rotating shaft (3) and is arranged along the axial direction; the oil groove (7) is arranged on the outer wall of the rotating shaft (3) along the circumferential direction, and the oil inlet hole (6) is communicated with the oil groove (7).

3. The high durability wind power plant swivel joint of claim 2, wherein: the number of the oil outlet channels (4), the number of the oil inlet holes (6) and the number of the oil grooves (7) are four, and the four oil inlet holes (6) are uniformly distributed along the circumferential direction; the four oil grooves (7) are sequentially arranged along the axial direction of the rotating shaft (3).

4. The high durability wind power plant swivel joint of claim 1, wherein: the right side of copper sheathing (2) is equipped with end cover (8), end cover (8) cover is established on pivot (3), be equipped with seal groove (9) along circumference on the inner wall of end cover (8), be provided with sealing washer (10) in seal groove (9), sealing washer (10) with the outer wall sealing contact of pivot (3).

5. The high durability wind power plant swivel joint of claim 4, wherein: an oil drainage port (11) is formed in the shell (1), a leakage cavity (12) is formed in the shell (1) and located on the outer side of the left end face and the outer side of the right end face of the copper sleeve (2), the oil drainage port (11) is communicated with the leakage cavity (12), an oil seal (13) is arranged at the cavity opening of the leakage cavity (12), and the end cover (8) and the shell (1) are sealed through the oil seal (13); the shell (1) and the rotating shaft (3) are sealed through the oil seal (13).