Electro-hydraulic slip ring for wind power generation

Abstract

The utility model discloses an electro-hydraulic slip ring for wind power generation, which belongs to the technical field of wind power electro-hydraulic slip rings and is characterized in that the electro-hydraulic slip ring comprises a shell, a sealing cover is fixedly connected to the top of the shell, a slip ring body is arranged in the sealing cover, and a fixing sleeve is arranged on the surface of the slip ring body. Three adjusting mechanisms are arranged in the fixing sleeve, a first sealing ring and a second sealing ring are arranged on the surface of the slip ring body, a fixing mechanism is arranged on the surface of the second sealing ring, and a base is arranged on the top of the sealing cover. The problems that abrasion can be caused by friction between an existing electric brush and a conducting ring, contact resistance can be increased along with service time, stability of electric power and signal transmission is affected, even poor contact can be caused, a sealing piece can be aged, deformed or damaged after long-time operation, hydraulic oil leakage is caused, and the service life of the electric brush is affected are solved. The normal operation of a hydraulic system is influenced, and the environment is possibly polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power electro-hydraulic slip rings, in particular to an electro-hydraulic slip ring for wind power generation. Background Art

[0002] The electro-hydraulic slip ring for wind power generation is a key component in a wind turbine generator set. It realizes the transmission of power, signals and hydraulic media between the rotating parts and the stationary parts.

[0003] During the transmission process, the gas-electric-hydraulic rotary slip ring is prone to entanglement or twisting of pipes and wires due to the need for rotation. Once this happens, the gas-electric-hydraulic rotary slip ring will not be able to work normally and requires timely maintenance, resulting in a waste of working time and reduced work efficiency.

[0004] Disclosed is a multi-channel gas-electric-hydraulic rotary slip ring, comprising a rotary joint and a detachable connection via bolts; the rotary joint comprises a rotor air shaft, a stator housing and a stator cover plate; a protrusion on the rotor air shaft is provided with a thread, the protrusion is inserted into the interior of the stator housing, and the thread is engaged and connected with a ventilation groove on the inner wall of the stator housing; the electric slip ring comprises a bracket, a rotor shaft, a conductive copper ring and a rotor outlet wire, the rotor outlet wire is located inside the rotor shaft, and one end of the rotor outlet wire is located inside the rotor shaft and the other end is located inside the rotor air shaft. This utility model utilizes a rotary joint to change its traditional direct transmission medium of pipelines and wires, optimizes the distortion of pipelines and wires caused by entanglement due to rotation during transmission, has its own structural strength, pressure strength, solid material, and is easy to use, and can be mass-produced and applied to various intelligent manufacturing fields.

[0005] In response to the above problems, existing patents have provided solutions. However, the above solutions have certain limitations during use. The friction between the brushes and the conductive rings will cause wear. As the use time increases, the contact resistance will increase, affecting the stability of power and signal transmission, and may even cause poor contact. After long-term operation, the seals may age, deform or be damaged, causing hydraulic oil leakage, which not only affects the normal operation of the hydraulic system, but may also pollute the environment.

[0006] Therefore, an electro-hydraulic slip ring for wind power generation is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide an electro-hydraulic slip ring for wind power generation, which can solve the problem that the friction between the existing brushes and the conductive ring will cause wear, and the contact resistance will increase with the use time, affecting the stability of power and signal transmission, and may even cause poor contact. In addition, after long-term operation, the seal may age, deform or be damaged, causing hydraulic oil leakage, which not only affects the normal operation of the hydraulic system, but also may pollute the environment.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: an electro-hydraulic slip ring for wind power generation, comprising a housing, a cover fixedly connected to the top of the housing, a slip ring body disposed within the cover, a fixed sleeve disposed on the surface of the slip ring body, three adjustment mechanisms disposed within the fixed sleeve, a first sealing ring and a second sealing ring disposed on the surface of the slip ring body, a fixing mechanism disposed on the surface of the second sealing ring, and a base disposed on the top of the cover;

[0009] The fixing mechanism includes a rotating connecting frame, a limiting ring, three positioning pins and a fixing groove. The surface of the connecting frame is fixedly connected to the interior of the limiting ring. The interior of the connecting frame is in close contact with the inner surface of the second sealing ring. The top of the positioning pin is fixedly connected to the bottom of the connecting frame. The bottom of the positioning pin extends to the interior of the fixing groove and is fixedly connected to the interior of the fixing groove. The fixing groove is opened at the top of the base.

[0010] Preferably, three brushes are fixedly connected inside the fixing sleeve, and spring sheets are provided on opposite sides of the three brushes.

[0011] Preferably, the bottom of the spring sheet is fixedly connected to a fixing seat, and opposite sides of the three spring sheets are in contact with the surface of the slip ring body.

[0012] Preferably, the top of the fixing seat is fixedly connected to two connecting columns, the bottom of the brush is provided with two connecting grooves, and the tops of the connecting columns extend into the interior of the connecting grooves and are fixedly connected to the interior of the connecting grooves.

[0013] Preferably, a fixing frame is provided on the top of the cover, and the bottom of the fixing frame extends to the interior of the cover and is fixedly connected to the interior of the cover.

[0014] Preferably, the bottom of the base extends to the interior of the fixing frame and is in close contact with the interior of the fixing frame, and the bottom of the limiting ring is in contact with the top of the fixing frame.

[0015] Preferably, a sealing ring is provided on the surface of the slip ring body, and the surface of the sealing ring is fixedly connected to the inside of the fixing frame.

[0016] Preferably, a sealing groove is provided between the sealing ring and one side opposite to the base, and the surface of the first sealing ring extends to the interior of the sealing groove and is in close contact with the interior of the sealing groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This application enables the connecting frame to drive the positioning pin to move into the interior of the fixing groove, thereby facilitating the fixing groove to fix and limit the connecting frame through the positioning pin. This facilitates the connecting frame to limit the second sealing ring through the base, so that the surface of the connecting frame is fixedly connected to the interior of the limiting ring, and thus facilitates the base to drive the second sealing ring to be installed inside the fixing frame through the limiting ring.

[0019] 2. In this application, the fixing seat drives the connecting column to move to the inside of the connecting groove for fixing, thereby facilitating the fixing seat to drive the spring sheet to be installed on the surface of the brush, so that the surface of the spring sheet contacts the surface of the slip ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the overall structural diagram of the electro-hydraulic slip ring for wind power generation of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional connection between the cover and the housing of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional connection between the second sealing ring and the connecting frame in the present utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure inside the fixed sleeve of the utility model;

[0024] Figure 5 This is a three-dimensional connection diagram of the adjustment mechanism in the utility model;

[0025] Figure 6 For this utility model Figure 3 A partial enlarged view of point A in the middle.

[0026] In the figure, 1. housing; 2. sealing cover; 3. slip ring body; 4. fixing sleeve; 5. sealing groove; 6. first sealing ring; 7. second sealing ring; 8. fixing mechanism; 801. connecting frame; 802. limiting ring; 803. positioning pin; 804. fixing groove; 9. adjusting mechanism; 901. brush; 902. connecting groove; 903. connecting column; 904. spring sheet; 905. fixing seat; 10. fixing frame; 11. base; 12. sealing ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-6 , this utility model provides a technical solution:

[0029] An electro-hydraulic slip ring for wind power generation, comprising a housing 1, with a cover 2 fixedly connected to the top of the housing 1, characterized in that a slip ring body 3 is disposed inside the cover 2, a fixing sleeve 4 is disposed on the surface of the slip ring body 3, three adjustment mechanisms 9 are disposed inside the fixing sleeve 4, a first sealing ring 6 and a second sealing ring 7 are disposed on the surface of the slip ring body 3, a fixing mechanism 8 is disposed on the surface of the second sealing ring 7, and a base 11 is disposed on the top of the cover 2;

[0030] The fixing mechanism 8 includes a rotating connecting frame 801, a limiting ring 802, three positioning pins 803 and a fixing groove 804. The surface of the connecting frame 801 is fixedly connected to the interior of the limiting ring 802. The interior of the connecting frame 801 is in close contact with the inner surface of the second sealing ring 7. The top of the positioning pin 803 is fixedly connected to the bottom of the connecting frame 801. The bottom of the positioning pin 803 extends to the interior of the fixing groove 804 and is fixedly connected to the interior of the fixing groove 804. The fixing groove 804 is opened at the top of the base 11.

[0031] In this embodiment: by providing a fixing groove 804 on the top of the base 11, it is convenient for the fixing groove 804 to fix and limit the connecting frame 801 through the positioning pin 803, so that the connecting frame 801 can be conveniently limited to the second sealing ring 7 through the base 11, so that the surface of the connecting frame 801 is fixedly connected to the inside of the limiting ring 802, and the base 11 can be conveniently driven to drive the second sealing ring 7 to be installed inside the cover 2 through the limiting ring 802, so that the inside of the second sealing ring 7 and the inside of the first sealing ring 6 are conveniently in contact with the surface of the slip ring body 3, thereby fully sealing the surface of the slip ring body 3.

[0032] Specifically, such as Figure 4 、 Figure 5 As shown, three brushes 901 are fixedly connected inside the fixing sleeve 4 , and spring sheets 904 are provided on opposite sides of the three brushes 901 .

[0033] Specifically, such as Figure 1 、 Figure 5 As shown, the bottom of the spring piece 904 is fixedly connected to the fixing seat 905 , and opposite sides of the three spring pieces 904 are in contact with the surface of the slip ring body 3 .

[0034] Specifically, such as Figure 5 As shown, two connecting posts 903 are fixedly connected to the top of the fixing seat 905 , two connecting slots 902 are defined at the bottom of the brush 901 , and the tops of the connecting posts 903 extend into and are fixedly connected to the interior of the connecting slots 902 .

[0035] In this embodiment, by fixedly connecting the surface of the connecting column 903 with the interior of the connecting groove 902 , the connecting column 903 can fix the fixing base 905 through the connecting groove 902 , thereby achieving the effect of fixing the fixing base 905 .

[0036] Specifically, such as Figure 3 As shown, a fixing frame 10 is provided on the top of the cover 2 , and the bottom of the fixing frame 10 extends to the interior of the cover 2 and is fixedly connected to the interior of the cover 2 .

[0037] Specifically, such as Figure 3 、 Figure 6 As shown, the bottom of the base 11 extends to the inside of the fixing frame 10 and is in close contact with the inside of the fixing frame 10 , and the bottom of the limiting ring 802 is in contact with the top of the fixing frame 10 .

[0038] In this embodiment, by making the bottom of the limiting ring 802 contact the top of the fixing frame 10 , the base 11 and the fixing frame 10 can be conveniently connected, thereby achieving the effect of facilitating the connection between the base 11 and the fixing frame 10 .

[0039] Specifically, such as Figure 3 As shown, a sealing ring 12 is provided on the surface of the slip ring body 3 , and the surface of the sealing ring 12 is fixedly connected to the inside of the fixing frame 10 .

[0040] Specifically, such as Figure 3 As shown, a sealing groove 5 is defined between the sealing ring 12 and one side opposite to the base 11 , and the surface of the first sealing ring 6 extends to the interior of the sealing groove 5 and is in close contact with the interior of the sealing groove 5 .

[0041] In this embodiment, by making the surface of the first sealing ring 6 in close contact with the interior of the sealing groove 5 , the sealing groove 5 can limit the position of the first sealing ring 6 , thereby achieving the effect of limiting the position of the first sealing ring 6 .

[0042] Working principle: When sealing the slip ring body 3, the connecting frame 801 drives the positioning pin 803 to move to the inside of the fixed groove 804, so that the fixed groove 804 can fix the connecting frame 801 through the positioning pin 803, which can facilitate the connecting frame 801 to limit the second sealing ring 7 through the base 11, so that the surface of the connecting frame 801 is fixedly connected to the inside of the limiting ring 802, which can facilitate the base 11 to drive the second sealing ring 7 to be installed in the inside of the fixing frame 10 through the limiting ring 802. By limiting the limiting ring 802, the first sealing ring 6 can be conveniently installed in the sealing groove 5 on the opposite side of the sealing ring 12 and the base 11, so that the inside of the second sealing ring 7 and the inside of the first sealing ring 6 can be conveniently contacted with the surface of the slip ring body 3, thereby fully sealing the surface of the slip ring body 3 and fixing the fixed seat 905. The connecting column 903 is driven to move to the inside of the connecting groove 902 for fixation, so that the fixing seat 905 can drive the spring piece 904 to be installed on the surface of the brush 901, so that the surface of the spring piece 904 contacts the surface of the slip ring body 3. When there are slight fluctuations on the surface of the slip ring body 3, the spring piece 904 can automatically adjust the position and pressure of the brush 901, so that the brush 901 can automatically adjust the contact pressure according to the surface state of the guide slip ring body 3 to ensure good contact, thereby solving the problem that the friction between the existing brush 901 and the conductive ring will cause wear, and the contact resistance will increase with the increase of use time, affecting the stability of power and signal transmission, and may even cause poor contact. In addition, after long-term operation, the seal may age, deform or be damaged, resulting in hydraulic oil leakage, which not only affects the normal operation of the hydraulic system, but also may pollute the environment.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electro-hydraulic slip ring for wind power generation, comprising a housing (1), a cover (2) fixedly connected to the top of the housing (1), characterized in that: A slip ring body (3) is provided inside the cover (2), a fixed sleeve (4) is provided on the surface of the slip ring body (3), three adjustment mechanisms (9) are provided inside the fixed sleeve (4), a first sealing ring (6) and a second sealing ring (7) are provided on the surface of the slip ring body (3), a fixing mechanism (8) is provided on the surface of the second sealing ring (7), and a base (11) is provided on the top of the cover (2); The fixing mechanism (8) includes a rotating connecting frame (801), a limiting ring (802), three positioning pins (803) and a fixing groove (804), the surface of the connecting frame (801) is fixedly connected to the inside of the limiting ring (802), the inside of the connecting frame (801) is in close contact with the inner surface of the second sealing ring (7), the top of the positioning pin (803) is fixedly connected to the bottom of the connecting frame (801), the bottom of the positioning pin (803) extends to the inside of the fixing groove (804) and is fixedly connected to the inside of the fixing groove (804), and the fixing groove (804) is opened at the top of the base (11).

2. The electro-hydraulic slip ring for wind power generation according to claim 1, characterized in that: Three brushes (901) are fixedly connected inside the fixing sleeve (4), and spring sheets (904) are provided on opposite sides of the three brushes (901).

3. The electro-hydraulic slip ring for wind power generation according to claim 2, characterized in that: The bottom of the spring sheet (904) is fixedly connected to a fixing seat (905), and opposite sides of the three spring sheets (904) are in contact with the surface of the slip ring body (3).

4. The electro-hydraulic slip ring for wind power generation according to claim 3, characterized in that: The top of the fixing seat (905) is fixedly connected to two connecting columns (903), the bottom of the brush (901) is provided with two connecting grooves (902), and the tops of the connecting columns (903) extend into the interior of the connecting grooves (902) and are fixedly connected to the interior of the connecting grooves (902).

5. The electro-hydraulic slip ring for wind power generation according to claim 1, characterized in that: A fixing frame (10) is provided on the top of the cover (2), and the bottom of the fixing frame (10) extends to the interior of the cover (2) and is fixedly connected to the interior of the cover (2).

6. The electro-hydraulic slip ring for wind power generation according to claim 5, characterized in that: The bottom of the base (11) extends to the interior of the fixing frame (10) and is in close contact with the interior of the fixing frame (10), and the bottom of the limiting ring (802) is in contact with the top of the fixing frame (10).

7. The electro-hydraulic slip ring for wind power generation according to claim 5, characterized in that: A sealing ring (12) is provided on the surface of the slip ring body (3), and the surface of the sealing ring (12) is fixedly connected to the interior of the fixing frame (10).

8. The electro-hydraulic slip ring for wind power generation according to claim 7, characterized in that: A sealing groove (5) is provided between the sealing ring (12) and the opposite side of the base (11), and the surface of the first sealing ring (6) extends to the inside of the sealing groove (5) and is in close contact with the inside of the sealing groove (5).

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