Generator shaft cooling fan

Abstract

The invention relates to the technical field of generators for fans, and discloses a generator shaft cooling fan which comprises a fixing frame, a supporting plate is fixedly connected to the inner wall of the fixing frame, a mounting cylinder is fixedly connected to the outer wall of the supporting plate, a limiting groove is formed in the mounting cylinder, a connecting sleeve is rotationally connected to the interior of the mounting cylinder, and the connecting sleeve is fixedly connected to the inner wall of the fixing frame. A fixing block is fixedly connected to the outer wall of the connecting sleeve, and a mounting assembly is arranged on the outer wall of the connecting sleeve. The mounting assembly comprises a supporting cylinder, the inner wall of the supporting cylinder is arranged on the outer wall of the connecting sleeve, and the outer wall of the supporting cylinder is arranged on the inner wall of the limiting groove. The through groove of the supporting cylinder is aligned with the fixing block, the fixing block is inserted into the limiting groove, the heat dissipation frame is rotated, the fixing groove is rotated to the position of the fixing block, the spring rebounds to push the top disc, the fixing block is driven to slide into the fixing groove for installation, the heat dissipation frame is pushed inwards and rotated by 90 degrees, the heat dissipation frame is disassembled through the through groove, and therefore the continuity of production operation is guaranteed, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of generators for wind turbines, in particular to a generator shaft-belted cooling fan. Background Art

[0002] In the modern power production system, generators, as core equipment, are always responsible for converting other forms of energy into electrical energy. When they are working, current flows through the windings, and the iron core is affected by hysteresis and eddy currents, which will continuously generate a large amount of heat. If this heat cannot be channeled and dissipated in time, the temperature of the generator will rise rapidly, which will not only reduce the power generation efficiency, but also accelerate the aging of insulation materials and greatly shorten the service life of the generator. There are various ways to dissipate heat for generators. Air cooling has the significant advantages of simple structure and low cost. The shaft-belt cooling fan, as a key component of the air cooling system, is directly driven by the generator shaft and promotes air flow through rotation to take away the heat generated by the generator.

[0003] However, in current technology, the cooling fan is mostly integrated with the generator, which makes the installation, disassembly and cleaning of the fan complicated and time-consuming. It is also difficult to disassemble, affecting the efficiency of subsequent maintenance. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a generator shaft-belt cooling fan, which solves the problem that the fan is too complicated to install and disassemble and clean, and is difficult to disassemble, thereby reducing maintenance efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a generator shaft belt cooling fan, including a fixing frame, the inner wall of the fixing frame is fixedly connected to a support plate, the outer wall of the support plate is fixedly connected to a mounting tube, a limiting groove is provided inside the mounting tube, a connecting sleeve is rotatably connected inside the mounting tube, a fixing block is fixedly connected to the outer wall of the connecting sleeve, and a mounting assembly is provided on the outer wall of the connecting sleeve.

[0006] Preferably, the mounting assembly includes a support tube, the inner wall of the support tube is arranged on the outer wall of the connecting sleeve, the outer wall of the support tube is arranged on the inner wall of the limiting groove, a through groove is opened inside the support tube, the outer wall of the fixing block is arranged on the inner wall of the through groove, a fixing groove is opened inside the support tube, and the outer wall of the fixing block is arranged on the inner wall of the fixing groove.

[0007] Preferably, the outer wall of the support tube is fixedly connected to a heat sink, the outer wall of the heat sink is rotatably connected to a positioning plate, the outer wall of the positioning plate is fixedly connected to a spring, the outer wall of the spring is fixedly connected to a top plate, the outer wall of the top plate is slidably connected to the inner wall of the support tube, and the outer wall of the top plate is arranged on the outer wall of the connecting sleeve.

[0008] Preferably, a mounting ear is fixedly connected to the outer wall of the fixing bracket, and the mounting ear is used to install the fixing bracket on the generator.

[0009] Preferably, the outer wall of the heat dissipation frame is fixedly connected with a support plate, the interior of the support plate is rotatably connected with a screw rod, and the outer wall of the screw rod is fixedly connected with a screw cap.

[0010] Preferably, the outer wall of the screw rod is threadedly connected with a guide block, the outer wall of the guide block is rotatably connected with a transmission plate, and the outer wall of the transmission plate is fixedly connected to the outer wall of the positioning plate.

[0011] Preferably, the outer wall of the positioning plate is fixedly connected with a main bevel gear, and the outer wall of the main bevel gear is arranged on the inner wall of the heat dissipation frame.

[0012] Preferably, the outer wall of the main bevel gear is meshingly connected with a secondary bevel gear, the interior of the secondary bevel gear is fixedly connected with an adjustment column, and the outer wall of the adjustment column is rotatably connected to the inner wall of the heat dissipation frame.

[0013] Preferably, a top end of the adjusting column is fixedly connected to a rotating column, and an outer wall of the rotating column is rotatably connected to the inside of the heat dissipation frame.

[0014] Preferably, fan blades are fixedly connected to the outer wall of the rotating column.

[0015] Working principle: first, install the fixing frame to the position corresponding to the generator shaft through the mounting ears with the mounting bolts, then insert the generator shaft into the inner wall of the connecting sleeve, and install and fix the connecting sleeve and the generator shaft through the mounting holes. Then, align the through slot opened by the support tube with the fixing block and insert it into the inner wall of the limiting slot. After manually fixing the generator shaft, rotate the heat sink to drive the fixing slot to the position of the fixing block. At this time, the spring rebounds through the heat sink, and drives the fixing block to slide to the inner wall of the fixing slot by pushing the top plate, so as to achieve the fixed installation of the heat sink as a whole. When the generator shaft rotates, the support tube can be driven to rotate on the inner wall of the limiting slot to drive the fan blades to rotate, so as to achieve heat dissipation inside the generator. When disassembling, push the heat sink inward, rotate it another ninety degrees after fixing the generator shaft, and the heat sink as a whole can be disassembled through the through slot, so as to ensure the continuity of production or operation and improve the efficiency of equipment maintenance. By twisting the screw cap, the screw cap can drive the screw rod to rotate inside the support plate, and the reverse force generated by the threaded connection can pull the guide block to move, thereby driving the positioning plate to rotate on the outer wall of the heat sink through the transmission plate. At this time, the rotation of the positioning plate drives the main bevel gear to rotate synchronously, and the adjustment column fixed by multiple secondary bevel gears is driven to rotate through the meshing connection, so that the rotation angle of the fan blade can be flexibly adjusted through the rotating column, thereby improving the adaptability and efficiency of the cooling fan.

[0016] The present invention provides a generator shaft with a cooling fan. It has the following beneficial effects: 1. The present invention aligns the through slot of the support tube with the fixed block and inserts it into the limiting slot, rotates the heat sink so that the fixed slot is turned to the fixed block, and the spring rebounds to push the top plate, driving the fixed block to slide into the fixed slot to complete the installation of the heat sink, and then pushes the heat sink inward and rotates ninety degrees to remove the heat sink through the through slot, thereby ensuring the continuity of production operation and improving maintenance efficiency.

[0017] 2. The present invention drives the screw rod to rotate in the support plate by twisting the screw cap, and uses the reverse force of the thread to pull the guide block to move. The guide block drives the positioning plate to rotate on the outer wall of the heat dissipation frame through the transmission plate, and then the positioning plate drives multiple secondary bevel gears to rotate through the main bevel gear, so that the rotation angle of the fan blades can be flexibly adjusted through the rotating column, thereby improving the adaptability and efficiency of the heat dissipation fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a generator shaft with a cooling fan according to the present invention; Figure 2 It is a schematic diagram of the partial structure of a mounting cylinder of a generator shaft belt cooling fan of the present invention; Figure 3 It is a partial structural schematic diagram of a positioning plate of a generator shaft with a cooling fan according to the present invention; Figure 4 It is a schematic diagram of the partial structure of a top plate of a generator shaft with a cooling fan according to the present invention; Figure 5 It is a partial structural schematic diagram of an adjustment column of a generator shaft with a cooling fan according to the present invention; Figure 6 It is a schematic diagram of the partial structure of a support plate of a generator shaft belt cooling fan of the present invention; Figure 7 It is a partial structural schematic diagram of a heat dissipation frame of a generator shaft with a heat dissipation fan according to the present invention; Figure 8 It is a schematic diagram of the partial structure of the secondary bevel gear of a generator shaft with a cooling fan according to the present invention.

[0019] Among them, 1. fixed frame; 2. mounting ear; 3. support plate; 4. mounting tube; 5. limiting groove; 6. connecting sleeve; 7. fixed block; 8. heat dissipation frame; 9. support tube; 10. through groove; 11. fixing groove; 12. positioning plate; 13. spring; 14. top plate; 15. support plate; 16. screw rod; 17. screw cap; 18. guide block; 19. transmission plate; 20. main bevel gear; 21. secondary bevel gear; 22. adjusting column; 23. rotating column; 24. fan blade. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides a generator shaft belt cooling fan, including a fixing frame 1, the inner wall of the fixing frame 1 is fixedly connected with a support plate 3, the outer wall of the support plate 3 is fixedly connected with a mounting tube 4, the interior of the mounting tube 4 is provided with a limiting groove 5, the interior of the mounting tube 4 is rotatably connected with a connecting sleeve 6, the outer wall of the connecting sleeve 6 is fixedly connected with a fixing block 7, and the outer wall of the connecting sleeve 6 is provided with a mounting assembly; the mounting assembly includes a supporting tube 9, the inner wall of the supporting tube 9 is arranged on the outer wall of the connecting sleeve 6, and the outer wall of the supporting tube 9 is arranged on the inner wall of the limiting groove 5, A through groove 10 is opened inside the support tube 9, and the outer wall of the fixed block 7 is arranged on the inner wall of the through groove 10. A fixing groove 11 is opened inside the support tube 9, and the outer wall of the fixed block 7 is arranged on the inner wall of the fixing groove 11; the outer wall of the support tube 9 is fixedly connected to the heat dissipation frame 8, and the outer wall of the heat dissipation frame 8 is rotatably connected to the positioning plate 12, the outer wall of the positioning plate 12 is fixedly connected to the spring 13, the outer wall of the spring 13 is fixedly connected to the top plate 14, the outer wall of the top plate 14 is slidably connected to the inner wall of the support tube 9, and the outer wall of the top plate 14 is arranged on the outer wall of the connecting sleeve 6.

[0022] Specifically, the fixing frame 1 has a fixed supporting function for the supporting plate 3, and the supporting plate 3 can support the position of the mounting tube 4 to ensure the unified axis of the mounting tube 4 and the generator shaft. At the same time, the mounting tube 4 can support the rotation position of the connecting sleeve 6. The connecting sleeve 6 is provided with a mounting hole for connecting the generator shaft with the connecting sleeve 6 through a fixing bolt, and the connecting sleeve 6 has a fixed supporting function for the fixing block 7, and the connecting sleeve 6 can drive the supporting tube 9 to rotate on the inner wall of the limiting groove 5 through the fixing block 7. The supporting tube 9 can pass through the outer wall of the fixing block 7 through the through groove 10 to slide the connecting sleeve 6 to the inner wall of the supporting tube 9. At the same time, after rotating the supporting tube 9, it drives The fixing groove 11 rotates to the position of the fixing block 7, and the fixing groove 11 has a limiting effect on the position of the fixing block 7. When the generator shaft rotates, the fixing block 7 can drive the support tube 9 to rotate, and the support tube 9 has a fixed supporting function for the heat sink 8, thereby achieving the heat dissipation effect. At the same time, the heat sink 8 has a fixed supporting function for the positioning plate 12, and the positioning plate 12 can push the top plate 14 to slide outward through the elastic force generated by the spring 13, thereby ensuring the fit between the fixing block 7 and the fixing groove 11, and when the through groove 10 slides to the position of the fixing block 7, it is quickly ejected, thereby realizing the rapid disassembly and installation of the cooling fan, and improving the equipment maintenance efficiency.

[0023] See attached Figure 1 The outer wall of the fixing frame 1 is fixedly connected with a mounting ear 2, and the mounting ear 2 is used to install the fixing frame 1 on the generator.

[0024] Specifically, the fixing frame 1 has a fixed support function for the mounting ear 2, providing a reliable connection point between the fixing frame 1 and the generator, so that the fixing frame 1 can be firmly attached to the generator, ensuring that the entire heat dissipation structure forms a whole with the generator.

[0025] See attached Figure 6 and attached Figure 7 The outer wall of the heat dissipation frame 8 is fixedly connected to a support plate 15, the interior of the support plate 15 is rotatably connected to a screw rod 16, and the outer wall of the screw rod 16 is fixedly connected to a screw cap 17; the outer wall of the screw rod 16 is threadedly connected to a guide block 18, the outer wall of the guide block 18 is rotatably connected to a transmission plate 19, and the outer wall of the transmission plate 19 is fixedly connected to the outer wall of the positioning plate 12.

[0026] Specifically, the heat sink 8 has a fixed supporting function for the support plate 15, and the support plate 15 can support the rotation position of the screw rod 16. When the screw cap 17 is turned, the screw rod 16 can be driven to rotate. When the screw rod 16 rotates, the reverse force generated by the threaded connection can drive the guide block 18 to move. The transmission plate 19 can support the rotation position of the guide block 18, and can drive the positioning plate 12 to rotate on the outer wall of the heat sink 8.

[0027] See attached Figure 5 and attached Figure 8 The outer wall of the positioning plate 12 is fixedly connected to the main bevel gear 20, and the outer wall of the main bevel gear 20 is arranged on the inner wall of the heat dissipation frame 8; the outer wall of the main bevel gear 20 is meshingly connected to the secondary bevel gear 21, and the inside of the secondary bevel gear 21 is fixedly connected to the adjusting column 22, and the outer wall of the adjusting column 22 is rotatably connected to the inner wall of the heat dissipation frame 8.

[0028] Specifically, the positioning plate 12 has a fixed supporting function for the main bevel gear 20. When the positioning plate 12 rotates, the main bevel gear 20 can be driven to rotate synchronously. The main bevel gear 20 is in contact with the secondary bevel gear 21, and the secondary bevel gear 21 can be driven to rotate through the meshing connection. The secondary bevel gear 21 has a fixing function on the adjusting column 22, thereby driving the adjusting column 22 to rotate on the inner wall of the heat dissipation frame 8.

[0029] See attached Figure 3 and Figure 5 The top of the adjusting column 22 is fixedly connected with a rotating column 23 , and the outer wall of the rotating column 23 is rotatably connected to the inside of the heat dissipation frame 8 ; the outer wall of the rotating column 23 is fixedly connected with a fan blade 24 .

[0030] Specifically, the adjusting column 22 has a fixing effect on the rotating column 23, so the adjusting column 22 can synchronously drive the rotating column 23 to rotate when rotating, and the rotating column 23 has a fixed supporting effect on the fan blades 24, so that the rotation angle of the fan blades 24 can be adjusted when the rotating column 23 rotates. When the load is light, the angle is adjusted to a smaller value to reduce the power consumption and noise of the fan blades 24, while avoiding energy waste caused by excessive heat dissipation. When the load is heavy and the heat generation is high, the angle of the fan blades 24 is increased to make the fan blades 24 blow out a stronger airflow, efficiently take away the heat, and ensure that the equipment is always in a suitable temperature range and maintains a stable operating state.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A generator shaft-mounted cooling fan, comprising a fixing frame (1), characterized in that: The inner wall of the fixing frame (1) is fixedly connected to a support plate (3), the outer wall of the support plate (3) is fixedly connected to a mounting tube (4), a limiting groove (5) is provided inside the mounting tube (4), a connecting sleeve (6) is rotatably connected inside the mounting tube (4), a fixing block (7) is fixedly connected to the outer wall of the connecting sleeve (6), and a mounting assembly is provided on the outer wall of the connecting sleeve (6).

2. The generator shaft-belt cooling fan according to claim 1, characterized in that: The mounting assembly comprises a support tube (9), the inner wall of the support tube (9) being arranged on the outer wall of the connecting sleeve (6), the outer wall of the support tube (9) being arranged on the inner wall of the limiting groove (5), a through groove (10) being provided inside the support tube (9), the outer wall of the fixing block (7) being arranged on the inner wall of the through groove (10), a fixing groove (11) being provided inside the support tube (9), and the outer wall of the fixing block (7) being arranged on the inner wall of the fixing groove (11).

3. The generator shaft-belt cooling fan according to claim 2, characterized in that: The outer wall of the support tube (9) is fixedly connected to a heat sink (8), the outer wall of the heat sink (8) is rotatably connected to a positioning plate (12), the outer wall of the positioning plate (12) is fixedly connected to a spring (13), the outer wall of the spring (13) is fixedly connected to a top plate (14), the outer wall of the top plate (14) is slidably connected to the inner wall of the support tube (9), and the outer wall of the top plate (14) is arranged on the outer wall of the connecting sleeve (6).

4. The generator shaft-belt cooling fan according to claim 1, characterized in that: The outer wall of the fixing frame (1) is fixedly connected with a mounting ear (2), and the mounting ear (2) is used to mount the fixing frame (1) on the generator.

5. The generator shaft-mounted cooling fan according to claim 3, characterized in that: The outer wall of the heat dissipation frame (8) is fixedly connected to a support plate (15), the interior of the support plate (15) is rotatably connected to a screw rod (16), and the outer wall of the screw rod (16) is fixedly connected to a screw cap (17).

6. The generator shaft-mounted cooling fan according to claim 5, characterized in that: The outer wall of the screw rod (16) is threadedly connected to a guide block (18), the outer wall of the guide block (18) is rotatably connected to a transmission plate (19), and the outer wall of the transmission plate (19) is fixedly connected to the outer wall of the positioning plate (12).

7. The generator shaft-mounted cooling fan according to claim 6, characterized in that: The outer wall of the positioning plate (12) is fixedly connected to a main bevel gear (20), and the outer wall of the main bevel gear (20) is arranged on the inner wall of the heat dissipation frame (8).

8. The generator shaft-mounted cooling fan according to claim 7, characterized in that: The outer wall of the primary bevel gear (20) is meshingly connected to a secondary bevel gear (21), the interior of the secondary bevel gear (21) is fixedly connected to an adjustment column (22), and the outer wall of the adjustment column (22) is rotatably connected to the inner wall of the heat dissipation frame (8).

9. The generator shaft-mounted cooling fan according to claim 8, characterized in that: The top end of the adjustment column (22) is fixedly connected to a rotating column (23), and the outer wall of the rotating column (23) is rotatably connected to the inside of the heat dissipation frame (8).

10. The generator shaft-mounted cooling fan according to claim 9, characterized in that: The outer wall of the rotating column (23) is fixedly connected with a fan blade (24).

Images