Slip ring chamber structure for wind driven generator

Abstract

The utility model provides a slip ring chamber structure for a wind driven generator. The slip ring chamber structure comprises a fan chamber and a slip ring chamber, wherein a centrifugal fan is arranged in the fan chamber, the centrifugal fan can be driven by a rotor to rotate, a slip ring is arranged in the slip ring chamber, the rotor is in contact with the slip ring through the slip ring chamber, the slip ring chamber and the fan chamber are arranged in parallel, and the rotor penetrates through the fan chamber and the slip ring chamber; the full partition plate separates the fan chamber from the slip ring chamber; and the one or more air blowers suck air outside the slip ring chamber into the slip ring chamber. According to the slip ring chamber structure for the wind driven generator, the fan chamber and the slip ring chamber are separated by arranging the full partition plate, so that the problems that carbon powder is accumulated on a bearing end cover at a non-driving end and fire is easy to break out are solved; the wind power of the centrifugal fan can be completely used for cooling the rotor after the full partition plate is arranged; and the air blower is arranged in the slip ring chamber, so that the wind power for removing the carbon powder is increased, and the carbon powder removing effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind generators, in particular to a slip ring chamber structure used for wind generators. Background Art

[0002] Wind power generation is an important clean energy. In the context of carbon peak and carbon neutrality goals, wind power generation has received more and more attention. Slip rings are important components of wind turbines. Slip rings include carbon brushes and collector rings. When the rotor rotates, the slip rings are used to transfer energy and data between the rotor and the stator. During this process, the carbon brushes will be constantly rubbed, thereby generating carbon powder, which needs to be removed in time. The slip rings are set in the slip ring chamber.

[0003] Figure 1 The figure shows a schematic diagram of the structure of the slip ring chamber of an existing wind turbine. The slip ring chamber 1 and the fan chamber 2 are arranged in parallel and connected, and the rotor 3 passes through the slip ring chamber 1 and the fan chamber 2. The slip ring 11 is arranged in the slip ring chamber 1. The slip ring 11 includes a carbon brush and a collector ring. During the rotation of the rotor 3, the carbon brush is continuously rubbed, thereby generating carbon powder.

[0004] A centrifugal fan 21 is arranged in the fan chamber 2. The rotor 3 drives the centrifugal fan 21 to rotate and generate axial wind, which draws the air outside the slip ring chamber 1 into the slip ring chamber 1 through the air inlet 12, thereby taking away the carbon powder adsorbed on the surface of the slip ring 11 into the fan chamber 2, and then the radial wind generated by the centrifugal fan 21 blows the carbon powder into the carbon deposit box 13. The carbon deposit box 13 is located at the junction of the fan chamber 2 and the slip ring chamber 1. However, this method of removing carbon powder has the following problems.

[0005] like Figure 1 As shown, the fan chamber 2 and the slip ring chamber 1 are separated only by the upper partition 4 at the upper part. In the part below the upper partition 4, the fan chamber 2 is connected to the slip ring chamber 1. The centrifugal fan 21 is close to the non-drive end bearing end cover 22. When the wind turbine is running, a large amount of waste grease will overflow from the non-drive end bearing end cover 22. The carbon powder blown out by the centrifugal fan 21 will fill the entire fan chamber 2. The carbon powder will gradually accumulate on the surface of the non-drive end bearing end cover 22, which will affect the heat dissipation of the bearing and cause temperature rise. The temperature rise will accelerate the precipitation of the bearing grease base oil, causing the grease to become sticky and hardened, which will not only reduce the lubrication effect, but also hinder the smooth discharge of waste grease, causing great safety hazards to the normal operation of the bearing. In severe cases, it may cause poor lubrication and burning of the bearing.

[0006] Moreover, if Figure 1 As shown, the slip ring chamber 1 is connected to the chamber where the non-drive end bearing cover 22 is located. If the carbon brush on the slip ring 1 is affected by discharge, the arc may contact and ignite the combustibles (carbon powder and grease mixture) attached to the surface of the non-drive end bearing cover 22 under the influence of the wind force of the centrifugal fan 21, which may easily cause a fire.

[0007] In addition, the centrifugal fan 21 has insufficient wind power, and the suction force generated has limited effect on the slip ring chamber 1. It can only drift and absorb the carbon powder in the air (carbon powder thrown out by the high-speed rotation of the slip ring), but cannot absorb the carbon powder deposited on the collector ring and the brush holder system. This leads to the contamination of the insulator in the slip ring chamber by the carbon powder. In severe cases, it will cause short circuits between phases and to the ground, causing burning and causing system alarms and shutdowns.

[0008] The utility model attempts to provide a slip ring chamber structure for a wind turbine generator, attempting to solve the problems in the prior art that carbon powder is easily accumulated on the non-drive end bearing end cover, the non-drive end bearing end cover is easily ignited, and the carbon powder on the slip ring cannot be cleaned thoroughly. Utility Model Content

[0009] Technical issues

[0010] The utility model attempts to provide a slip ring chamber structure for a wind turbine generator, attempting to solve the problems in the prior art that carbon powder is easily accumulated on the non-drive end bearing end cover, the non-drive end bearing end cover is easily ignited, and the carbon powder on the slip ring cannot be cleaned thoroughly.

[0011] Technical Solution

[0012] The utility model provides a slip ring chamber structure for a wind power generator, comprising: a fan chamber, in which a centrifugal fan is arranged, and the centrifugal fan can rotate under the drive of a rotor; a slip ring chamber, in which a slip ring is arranged, and the rotor contacts the slip ring through the slip ring chamber, the slip ring chamber and the fan chamber are arranged in parallel, and the rotor passes through the fan chamber and the slip ring chamber; a full partition, the full partition separates the fan chamber from the slip ring chamber, a through hole is arranged in the center of the full partition, and the full partition only allows the rotor to pass through the through hole; and one or more blowers, the one or more blowers are arranged on a side of the slip ring chamber opposite to the full partition, and the one or more blowers suck air outside the slip ring chamber into the slip ring chamber.

[0013] Furthermore, the slip ring chamber structure for a wind turbine further includes a carbon deposition box, which is arranged at the bottom of the slip ring chamber and is close to the full partition.

[0014] Furthermore, the slip ring chamber structure for a wind turbine further comprises one or more observation ports, and the one or more observation ports are arranged on a side of the slip ring chamber opposite to the full partition.

[0015] Furthermore, the slip ring chamber structure for a wind turbine further includes a non-drive end bearing cover, wherein the non-drive end bearing cover is disposed on the rotor and is close to the centrifugal fan.

[0016] Furthermore, an oil outlet is provided at the bottom of the non-drive end bearing end cover, and a drawer-type oil receiving box is provided below the oil outlet.

[0017] Technical Effects

[0018] According to the slip ring chamber structure for a wind turbine of the utility model, the fan chamber and the slip ring chamber are separated by arranging a full partition, so that the carbon powder generated in the slip ring chamber will not adhere to the non-drive end bearing end cover, thereby eliminating the problems of carbon powder accumulation and easy fire on the non-drive end bearing end cover; after the full partition is arranged, the wind force of the centrifugal fan can be fully used for cooling the rotor; by arranging a blower in the slip ring chamber, the wind force used for removing carbon powder is increased, thereby enhancing the effect of removing carbon powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic structural diagram of a slip ring chamber of an existing wind turbine.

[0020] Figure 2 Shown is a schematic structural diagram of a slip ring chamber structure for a wind turbine according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 1: Slip ring chamber; 11: Slip ring; 12: Air inlet; 13: Carbon deposit box; 14: Blower;

[0023] 2: Fan chamber; 21: Centrifugal fan; 22: Non-drive end bearing cover; 23: Oil outlet;

[0024] 3: rotor; 4: upper partition; 5: full partition. DETAILED DESCRIPTION

[0025] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0026] Figure 2 The figure shows a schematic diagram of the structure of the slip ring chamber for a wind turbine according to an embodiment of the utility model. Figure 2As shown, an embodiment of the utility model provides a slip ring chamber structure for a wind turbine, comprising: a fan chamber 2, in which a centrifugal fan 21 is arranged, and the centrifugal fan 21 can rotate under the drive of a rotor 3; a slip ring chamber 1, in which a slip ring 11 is arranged, and the rotor 2 contacts the slip ring 11 through the slip ring chamber 1, the slip ring chamber 1 and the fan chamber 2 are arranged in parallel, and the rotor 3 passes through the fan chamber 2 and the slip ring chamber 1; a full partition 5, the full partition 5 separates the fan chamber 2 from the slip ring chamber 1, and a through hole is arranged in the center of the full partition 5, and the full partition 5 only allows the rotor 3 to pass through the through hole; and one or more blowers 14, the one or more blowers 14 are arranged on a side of the slip ring chamber 1 opposite to the full partition 5, and the one or more blowers 14 suck air outside the slip ring chamber 1 into the slip ring chamber 1.

[0027] In the prior art, the fan chamber 2 and the slip ring chamber 1 are only partially separated by the upper partition 4. In the embodiment of the utility model, the fan chamber 2 and the slip ring chamber 1 are completely separated by the full partition 5, so that the carbon powder generated in the slip ring chamber 1 will not affect the fan chamber 2, and the risk of carbon powder accumulation and fire on the non-drive end bearing cover 22 is also eliminated.

[0028] After the fan chamber 2 is completely separated from the slip ring chamber 1, the wind generated by the centrifugal fan 21 will not affect the slip ring chamber 1. At this time, the wind generated by the centrifugal fan 21 is completely used to cool the rotor 3. The non-drive end bearing cover 22 is arranged on the rotor 3, and the non-drive end bearing cover 22 is close to the centrifugal fan 21, so the non-drive end bearing cover 22 can also be cooled, reducing the risk of fire.

[0029] Since the centrifugal fan 21 cannot affect the slip ring chamber 1 at this time, it cannot be used to remove the carbon powder. Therefore, one or more blowers 14 are arranged on the side opposite to the full partition 5. The blower 14 is arranged on the slip ring chamber 1, which is closer to the slip ring 11 and can exert a greater wind force to effectively remove the carbon powder drifting in the internal space of the slip ring chamber 1 and the carbon powder deposited on the slip ring 11. At this time, the air outlet of the blower 14 becomes the air inlet 12.

[0030] The wind generated by the blower 14 carries carbon powder after blowing through the slip ring 11. After hitting the full partition 5, the carbon powder falls along the full partition 5 under the action of gravity. A carbon deposition box 13 is provided at the bottom of the slip ring chamber 1, and the carbon deposition box 13 is close to the full partition 5. The carbon powder finally falls into the carbon deposition box 13.

[0031] As a solid, the inertia of carbon powder particles is greater than that of air as a gas. When the carbon powder particles hit the full partition 5, the horizontal speed of the carbon powder particles is instantly reduced to zero. However, due to the influence of the full partition 5, the wind force has a limited impact on the carbon powder particles hitting the full partition 5, and thus the carbon powder falls along the full partition 5 under the action of gravity.

[0032] In the prior art, Figure 1 As shown, the carbon deposit box 13 is located at the junction of the slip ring chamber 1 and the fan chamber 2. In the embodiment of the utility model, the position of the carbon deposit box 13 is adjusted, such as Figure 2 As shown, the carbon deposit box 13 is located on one side of the slip ring chamber 1 .

[0033] Furthermore, one or more observation ports are provided on the side of the slip ring chamber 1 opposite to the full partition 5 , so that the user can observe the situation inside the slip ring chamber. The plurality of observation ports can be provided around the blower 14 .

[0034] Furthermore, an oil outlet 23 is provided at the bottom of the non-drive end bearing end cover 22 , and a drawer-type oil collecting box is provided below the oil outlet 23 , so as to facilitate cleaning of the oil overflowing from the non-drive end bearing end cover 22 .

[0035] According to the slip ring chamber structure for a wind turbine of the utility model, the fan chamber and the slip ring chamber are separated by arranging a full partition, so that the carbon powder generated in the slip ring chamber will not adhere to the non-drive end bearing end cover, thereby eliminating the problems of carbon powder accumulation and easy fire on the non-drive end bearing end cover; after the full partition is arranged, the wind force of the centrifugal fan can be fully used for cooling the rotor; by arranging a blower in the slip ring chamber, the wind force used for removing carbon powder is increased, thereby enhancing the effect of removing carbon powder.

[0036] In the description of the present invention, it is necessary to understand that the terms “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A slip ring chamber structure for a wind turbine, comprising: A fan chamber, in which a centrifugal fan is arranged, and the centrifugal fan can rotate driven by a rotor; A slip ring chamber, in which a slip ring is arranged, through which the rotor contacts the slip ring, the slip ring chamber and the fan chamber are arranged in parallel, and the rotor passes through the fan chamber and the slip ring chamber; It is characterized in that the slip ring chamber structure for a wind turbine generator further comprises: A full partition, the full partition separates the fan chamber from the slip ring chamber, a through hole is provided in the center of the full partition, and the full partition only allows the rotor to pass through the through hole; and One or more blowers are disposed on a side of the slip ring chamber opposite to the full diaphragm, and the one or more blowers draw air outside the slip ring chamber into the slip ring chamber.

2. The slip ring chamber structure for a wind turbine according to claim 1, characterized in that: It also includes a carbon deposition box, which is arranged at the bottom of the slip ring chamber and is close to the full partition.

3. The slip ring chamber structure for a wind turbine according to claim 1, characterized in that: Also included is one or more observation ports, which are disposed on a side of the slip ring chamber opposite to the full diaphragm.

4. The slip ring chamber structure for a wind turbine according to claim 1, characterized in that: It also includes a non-drive end bearing end cover, which is arranged on the rotor and is close to the centrifugal fan.

5. The slip ring chamber structure for a wind turbine according to claim 4, characterized in that: An oil outlet is arranged at the bottom of the non-driving end bearing end cover, and a drawer-type oil receiving box is arranged below the oil outlet.

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