CN114934925A

CN114934925A - High-reliability electro-hydraulic slip ring valve block

Info

Publication number: CN114934925A
Application number: CN202210644553.5A
Authority: CN
Inventors: 殷栋
Original assignee: Wuxi Maytag Precision Machinery Co ltd
Current assignee: Wuxi Maytag Precision Machinery Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-08-23
Anticipated expiration: 2042-06-09
Also published as: CN114934925B

Abstract

The invention provides a high-reliability electro-hydraulic slip ring valve block, which comprises a rotor, a stator and an end cover, wherein the stator is sleeved on the outer ring of the rotor, the end cover is fixedly arranged on the right side of the stator, a slip ring rotating shaft is sleeved on the inner ring of the rotor, a slip ring fixing seat is fixedly arranged on the end cover and is arranged between the slip ring rotating shaft and the end cover, a plurality of rotating conducting rings are arranged at the right end of the slip ring rotating shaft, and a fixed conducting ring corresponding to the rotating conducting ring is arranged at the left end of the slip ring fixing seat; when the oil passage is filled with pressure oil, the pressure oil can push the rotating conducting ring to move rightwards, so that the rotating conducting ring and the fixed conducting ring are communicated.

Description

High-reliability electro-hydraulic slip ring valve block

Technical Field

The invention relates to the field of an electric slip ring valve block, in particular to a high-reliability electric slip ring valve block.

Background

The offshore wind power equipment needs extremely high reliability of relevant parts of the equipment due to high equipment maintenance cost, even a lifelong maintenance-free design, and puts high requirements on the structure of the parts or the operation mode. The electric slip ring and the liquid slip ring are used as key components of a circuit and an oil circuit for connecting the rotary part and the static part in the wind power equipment, and have the function of communicating signals, a power supply and a hydraulic system of a variable pitch system, a blade control part and the like, and the reliability of the electric slip ring and the liquid slip ring is directly related to the normal operation of the whole wind power equipment.

In the prior art, in a traditional electric slip ring valve block, a brush wire and a brush ring are in contact in a circumferential tangential direction under the action of the resilience force of the brush wire, so that the static end and the rotary end are in conductive connection. When the electric slip ring does not work, contact abrasion exists between the rotating conducting ring and the fixed conducting ring of the existing electric slip ring all the time, and when the resilience force is not enough to compensate, a gap is generated between the rotating conducting ring and the fixed conducting ring, the fault of circuit breaking is caused, and the reliability of current transmission is influenced.

Disclosure of Invention

The invention aims to solve the technical problem that in the prior art, when a traditional electric slip ring is in an inoperative state, contact abrasion exists between a rotating conducting ring and a fixed conducting ring all the time, so that a gap is generated between the rotating conducting ring and the fixed conducting ring, and the reliability of current transmission is influenced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a high reliability electricity liquid sliding ring valve piece, establishes including rotor, cover the stator, the fixed mounting of rotor outer lane are in the end cover on stator right side, the inner circle cover of rotor is equipped with the sliding ring pivot, the sliding ring pivot with be equipped with fixed mounting between the end cover and be in sliding ring fixing base on the end cover, the right-hand member of sliding ring pivot is equipped with a plurality of and rotates the conducting ring, the left end of sliding ring fixing base be equipped with rotate the fixed conducting ring of conducting ring correspondence.

Further: a spring is sleeved on the outer ring of the slip ring fixing seat, spring seats which are distributed axially are arranged on the right side of the slip ring rotating shaft, and the spring can push the spring seats leftwards so as to tightly press the slip ring rotating shaft on the inner wall of the rotor in a sealing manner; the left end of the rotor is provided with an oil inlet, an oil outlet is formed in the circumferential direction of the stator, an oil passage is communicated between the oil inlet and the oil outlet and communicated with a cavity formed between the inner ring of the rotor and the left side of the sliding ring rotating shaft, and pressure oil in the oil passage can push the sliding ring rotating shaft to move rightwards so that the rotating conducting ring is abutted and pressed against the fixed conducting ring.

Further: and a limiting plate which is embedded into the stator and fixedly connected to the rotor is arranged between the rotor and the end cover.

Further: the rotating conducting ring is communicated with an electric wire, and the rotor is provided with a wire cavity for the electric wire to penetrate through to the left end of the rotor.

Further: the slip ring is characterized in that a rotation stopping pin is arranged in the circumferential direction of the slip ring rotating shaft, a pin cavity for placing the rotation stopping pin is formed in the inner ring of the rotor, and the slip ring rotating shaft can rotate synchronously with the rotor through the rotation stopping pin.

Further: and a sealing ring and a support ring are arranged on the interface of the slip ring rotating shaft and the rotor.

The high-reliability electro-hydraulic slip ring has the advantages that when the high-reliability electro-hydraulic slip ring is in a non-working state, the rotating conducting ring and the fixed conducting ring are separated, so that abrasion cannot be caused between the rotating conducting ring and the fixed conducting ring, and when pressure oil is introduced into the oil passage, the pressure oil can push the rotating conducting ring to move rightwards, so that the reliability of the electro-hydraulic slip ring is greatly improved by communicating the rotating conducting ring and the fixed conducting ring, and the service life of the electro-hydraulic slip ring is prolonged.

Drawings

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

FIG. 1 is a schematic diagram of the present invention with a rotating conductive ring in communication with a fixed conductive ring;

FIG. 2 is a schematic diagram of the separation of the rotating conductive ring and the fixed conductive ring according to the present invention.

In the figure, the motor comprises a rotor 1, a rotor 2, a stator 3, an end cover 4, a slip ring rotating shaft 5, a slip ring fixing seat 6, a rotating conducting ring 7, a fixed conducting ring 8, a spring 9, a spring seat 10, an oil inlet 11, an oil outlet 12, an oil passage 13, a limiting plate 14, an electric wire 15, a wire cavity 16, a rotation stopping pin 17, a pin cavity 18, a sealing ring 19 and a supporting ring.

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 should be noted that, unless explicitly stated or limited otherwise, 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 a specific case to those of ordinary skill 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 and 2, the invention provides a high-reliability electro-hydraulic slip ring valve block, which includes a rotor 1, a stator 2 sleeved on an outer ring of the rotor 1, and an end cover 3 fixedly installed on a right side of the stator 2, wherein an inner ring of the rotor 1 is sleeved with a slip ring rotating shaft 4, a slip ring fixing seat 5 fixedly installed on the end cover 3 is arranged between the slip ring rotating shaft 4 and the end cover 3, a plurality of rotating conductive rings 6 are arranged at a right end of the slip ring rotating shaft 4, and a fixed conductive ring 7 corresponding to the rotating conductive ring 6 is arranged at a left end of the slip ring fixing seat 5.

When the oil passage 12 is filled with pressure oil, the pressure oil pushes the rotating conductive ring 6 to move rightwards, so that the rotating conductive ring 6 is communicated with the fixed conductive ring 7.

A spring 8 is sleeved on the outer ring of the slip ring fixing seat 5, spring seats 9 distributed circumferentially are arranged on the right side of the slip ring rotating shaft 4, and the spring 8 can push the spring 8 leftwards so as to tightly press the slip ring rotating shaft 4 on the inner wall of the rotor 1 in a sealing manner; the left end of the rotor 1 is provided with an oil inlet 10, an oil outlet 11 is arranged in the circumferential direction of the stator 2, an oil duct 12 is communicated between the oil inlet 10 and the oil outlet 11, the oil duct 12 is communicated with a cavity formed between the inner ring of the rotor 1 and the left side of the sliding ring rotating shaft 4, and pressure oil in the oil duct 12 can push the sliding ring rotating shaft 4 to move rightwards so that the rotating conductive ring 6 is pressed against and pressed on the fixed conductive ring 7.

When the electro-hydraulic slip ring does not work, the spring 8 pushes the slip ring rotating shaft 4 to the left against the inner wall of the rotor 1, so that the rotating conducting ring 6 arranged on the right side of the slip ring rotating shaft 4 is far away from the fixed conducting ring 7, further no abrasion exists between the rotating conducting ring 6 and the fixed conducting ring 7, and the service life of the electro-hydraulic slip ring is effectively prolonged; when pressure oil exists in the oil passage 12, the pressure oil enters a cavity formed between the inner ring of the rotor 1 and the left side of the slip ring rotating shaft 4, so that the pushing force of the spring 8 is overcome, the rotating conductive ring 6 is pressed on the fixed conductive ring 7, and the circuit is communicated.

A limiting plate 13 which is embedded in the stator 2 and fixedly connected to the rotor 1 is arranged between the rotor 1 and the end cover 3; when the limiting plate 13 rotates along with the rotor 1 in work, the abrasion force generated when the rotor 1 is in direct contact with the end cover 3 is effectively reduced, and the limiting plate 13 is embedded into the stator 2, so that the deviation of the limiting plate 13 can be effectively prevented.

The rotating conducting ring 6 is communicated with an electric wire 14, and the rotor 1 is provided with a wire cavity 15 through which the electric wire 14 passes to the left end of the rotor 1; the electric wire 14 passes through the rotor 1 to the left end of the rotor 1, and the space of the structure is effectively reduced.

The circumference of the slip ring rotating shaft 4 is provided with a rotation stopping pin 16, the inner ring of the rotor 1 is provided with a pin cavity 17 for placing the rotation stopping pin 16, and the slip ring rotating shaft 4 can synchronously rotate with the rotor 1 through the rotation stopping pin 16; during operation, the rotation stopping pin 16 can drive the slip ring rotating shaft 4 to rotate synchronously with the rotor 1, and meanwhile, the axial movement of the slip ring rotating shaft 4 is not influenced.

A sealing ring 18 and a supporting ring 19 are arranged on the interface of the slip ring rotating shaft 4 and the rotor 1; the sealing ring 18 and the supporting ring 19 can effectively prevent the oil duct 12 from entering a cavity formed by the right side of the rotor 1 and the slip ring rotating shaft 4, so that the oil duct enters the line cavity 15 to pollute the cavity and influence the normal work of the electro-hydraulic slip ring.

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 reliability electricity liquid slip ring valve piece, includes rotor (1), the cover establish stator (2), the fixed mounting of rotor (1) outer lane be in end cover (3) on stator (2) right side, its characterized in that: the inner circle cover of rotor (1) is equipped with sliding ring pivot (4), sliding ring pivot (4) with be equipped with fixed mounting between end cover (3) sliding ring fixing base (5) on end cover (3), the right-hand member of sliding ring pivot (4) is equipped with a plurality of and rotates conducting ring (6), the left end of sliding ring fixing base (5) be equipped with rotate conducting ring (6) and correspond fixed conducting ring (7).

2. The high reliability electro-hydraulic slip ring valve block of claim 1, wherein: a spring (8) is sleeved on the outer ring of the slip ring fixing seat (5), spring seats (9) distributed circumferentially are arranged on the right side of the slip ring rotating shaft (4), and the spring (8) can push the spring (8) seat leftwards so as to tightly press the slip ring rotating shaft (4) on the inner wall of the rotor (1) in a sealing manner;

the left end of rotor (1) is equipped with oil inlet (10), the circumference of stator (2) is equipped with oil-out (11), oil inlet (10) with intercommunication has oil duct (12) between oil-out (11), oil duct (12) intercommunication rotor (1) inner circle with the cavity that forms between sliding ring pivot (4) the left side, pressure fluid in oil duct (12) can push away sliding ring pivot (4) move to the right and then make rotation conducting ring (6) butt compresses tightly fixed conducting ring (7).

3. The high reliability electro-hydraulic slip ring valve block of claim 1, wherein: the rotor (1) and be equipped with the embedding between end cover (3) stator (2) and fixed connection be in limiting plate (13) on rotor (1).

4. The high reliability electro-hydraulic slip ring valve block of claim 2, wherein: the rotating conducting ring (6) is communicated with an electric wire (14), and the rotor (1) is provided with a wire cavity (15) for the electric wire (14) to penetrate through to the left end of the rotor (1).

5. The high reliability electro-hydraulic slip ring valve block of claim 1, wherein: the rotor is characterized in that a rotation stopping pin (16) is arranged in the circumferential direction of the slip ring rotating shaft (4), a pin cavity (17) for placing the rotation stopping pin (16) is formed in the inner ring of the rotor (1), and the slip ring rotating shaft (4) can rotate synchronously with the rotor (1) through the rotation stopping pin (16).

6. The high reliability electro-hydraulic slip ring valve block of claim 1, wherein: and a sealing ring (18) and a supporting ring (19) are arranged on the interface of the slip ring rotating shaft (4) and the rotor (1).