Cooling device for end winding of generator

Abstract

The utility model discloses a cooling device for an end winding of a generator, which relates to the technical field of electrics and comprises a generator body, an inner cover support plate is fixedly mounted on the surface of the generator body, an end cover body is slidably mounted on the surface of the inner cover support plate, and a butt joint support groove is formed in the surface of the inner cover support plate. According to the cooling device for the end winding of the generator, the first guide plate pushes the second guide rod to slide from the inner side of the butt joint support plate to the inner wall of the positioning support groove, so that butt joint installation of the end cover body and the inner cover support plate is achieved; by means of the mode, the convenience of butt joint combination between the end cover body and the inner cover supporting plate is guaranteed, meanwhile, the convenience of disassembly maintenance and cleaning operation when the generator body works for a certain period of time is guaranteed, and the defects that a traditional generator body and an end cover body are located through bolts, rusting is easily caused, and separation operation is not convenient are overcome.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a cooling device for the end winding of a generator. Background Technology

[0002] A generator is a mechanical device that converts mechanical energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power machinery, which converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and then transmits it to the generator, which then converts it into electrical energy.

[0003] When existing generators are in use, they can achieve efficient operation by utilizing their energy. However, during operation, they generate a large amount of mechanical heat, so the generator end windings need to be cooled in real time. Although most existing generator end windings can be effectively cooled by fans, most generator end windings are often installed using bolts. Therefore, when it is necessary to maintain the fan or clean the filter inside the generator, the operator has to cumbersomely adjust the removal and installation of bolts. This can lead to the bolts rusting inside the generator housing, resulting in low efficiency when performing subsequent operations. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to solve the problems raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cooling device for the end winding of a generator, comprising a generator body, an inner cover plate fixedly mounted on the surface of the generator body, an end cover slidably mounted on the surface of the inner cover plate, a docking groove formed on the surface of the inner cover plate, a docking plate slidably mounted on the inner wall of the docking groove on the inner cover plate, an auxiliary support plate fixedly mounted on the surface of the docking plate, a power support rotatably mounted on the inner side of the auxiliary support plate, a first guide plate slidably mounted on the inner side of the docking plate, a second guide rod slidably mounted on the inner side of the docking plate, a positioning groove formed on the inner side of the inner cover plate, and the surface of the second guide rod slidably engaged with the inner wall of the positioning groove.

[0006] Preferably, a filter screen support plate is provided on the inner side of the inner cover support plate, a connecting rod is fixedly installed on the inner side of the inner cover support plate, and a fan mechanism is fixedly installed on the end of the connecting rod away from the inner cover support plate.

[0007] Preferably, the surface of the docking support plate is fixedly installed on the inner side of the end cover, and the surface of the docking support plate is inclined.

[0008] Preferably, a torsion spring is rotatably sleeved on the surface of the power support, with the two ends of the torsion spring fixedly installed on the surface of the power support and the inner side of the auxiliary support plate, respectively. The power support is in the shape of an I-beam.

[0009] Preferably, a first spring is fixedly installed on the surface of the first guide plate, and the two ends of the first spring are respectively fixedly installed on the surface of the first guide plate and the inner side of the connecting support plate.

[0010] Preferably, a second spring is fixedly installed on the surface of the second guide rod, and the two ends of the second spring are respectively fixedly installed on the surface of the second guide rod and the inner side of the connecting support plate.

[0011] Preferably, a support base is fixedly mounted on the surface of the generator body.

[0012] Preferably, the surfaces of the second guide rod and the first guide plate are also inclined, and a positioning block is fixedly installed on the surface of the mating support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The cooling device for the end winding of the generator has a first guide plate that pushes the second guide rod to slide on the inner side of the docking support plate to the inner wall of the positioning support groove, thus realizing the docking installation of the end cover and the inner cover support plate. This method ensures the convenience of docking and combining the end cover and the inner cover support plate, and also ensures the convenience of disassembling, maintaining and cleaning the generator body after a certain period of operation. It improves the disadvantage that the traditional generator body and end cover are easily rusted by bolt positioning and are not easy to separate. Therefore, it improves the efficiency of maintenance and cleaning operations of the generator body end using the fan mechanism and filter support plate, ensures good cooling effect when the generator body is in use, and improves the inconvenience of cumbersome disassembly and installation of bolts when cleaning the traditional filter support plate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the structure of a cooling device for the end winding of a generator according to the present invention;

[0017] Figure 2 This is a schematic diagram of the unfolded structure of a cooling device for the end winding of a generator according to the present invention;

[0018] Figure 3 This is a schematic diagram of the auxiliary support plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the planar structure of the auxiliary support plate of this utility model.

[0020] Reference numerals in the attached drawings: 1. Generator body; 2. Support base; 3. End cover; 4. Filter screen support plate; 5. Inner cover support plate; 6. Connecting support rod; 7. Fan mechanism; 8. Connecting support groove; 9. Connecting support plate; 10. Auxiliary support plate; 11. Power support; 12. Torsion spring; 13. First guide plate; 14. First spring; 15. Second guide rod; 16. Second spring; 17. Positioning support groove; 18. Positioning support block. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a cooling device for the end winding of a generator, including a generator body 1, and a support base 2 fixedly installed on the surface of the generator body 1. The function of the support base 2 is to support the generator body 1 to ensure the stability of the generator body 1 when it is placed and used.

[0026] Furthermore, an inner cover support plate 5 is fixedly installed on the surface of the generator body 1, an end cover 3 is slidably installed on the surface of the inner cover support plate 5, a filter support plate 4 is provided on the inner side of the inner cover support plate 5, a connecting support rod 6 is fixedly installed on the inner side of the inner cover support plate 5, and a fan mechanism 7 is fixedly installed at the end of the connecting support rod 6 away from the inner cover support plate 5. The function of the fan mechanism 7 is to provide air cooling for the end winding of the generator body 1, while the filter support plate 4 filters the air generated by the fan mechanism 7 during operation, thus reducing the disadvantage of dust entering and causing damage to the generator body 1.

[0027] Furthermore, the inner cover support plate 5 has a docking groove 8 on its surface, and a docking support plate 9 is slidably installed on the inner wall of the docking groove 8 on the inner cover support plate 5. The surface of the docking support plate 9 is fixedly installed on the inner side of the end cover 3. The surface of the docking support plate 9 is inclined. The inclined surface of the docking support plate 9 can ensure a certain guiding effect when the end cover 3 and the inner cover support plate 5 are docked, thereby ensuring the accuracy of the docking between the inner cover support plate 5 and the end cover 3. The gap between the generator body 1 and the end cover 3 is sealed with a rubber gasket.

[0028] Furthermore, an auxiliary support plate 10 is fixedly installed on the surface of the docking support plate 9. A power support column 11 is rotatably installed on the inner side of the auxiliary support plate 10. A torsion spring 12 is rotatably sleeved on the surface of the power support column 11. The two ends of the torsion spring 12 are respectively fixedly installed on the surface of the power support column 11 and the inner side of the auxiliary support plate 10. The power support column 11 is in the shape of an I-beam. A first guide plate 13 is slidably installed on the inner side of the docking support plate 9. A first spring 14 is fixedly installed on the surface of the first guide plate 13. The two ends of the first spring 14 are respectively fixedly installed on the surface of the first guide plate 13 and the inner side of the docking support plate 9. The I-beam shape of the power support column 11 ensures that when the arc of the power support column 11 abuts against the first guide plate 13, the first guide plate 13 is in a pressed and limited state. When the concave surface of the power support column 11 abuts against the first guide plate 13, the first guide plate 13 is pushed and retracted into the concave surface of the power support column 11 by the elasticity of the compressed first spring 14.

[0029] Furthermore, a second guide rod 15 is slidably installed on the inner side of the docking support plate 9, and a second spring 16 is fixedly installed on the surface of the second guide rod 15. The two ends of the second spring 16 are respectively fixedly installed on the surface of the second guide rod 15 and the inner side of the docking support plate 9. A positioning support groove 17 is opened on the inner side of the inner cover support plate 5. The surface of the second guide rod 15 is slidably engaged with the inner wall of the positioning support groove 17. The surfaces of the second guide rod 15 and the first guide plate 13 are also inclined surfaces. A positioning support block 18 is fixedly installed on the surface of the docking support plate 9. The function of the positioning support block 18 is that after the end cover 3 is docked with the inner cover support plate 5, it can squeeze and limit the filter support plate 4.

[0030] Furthermore, after maintenance of the fan mechanism 7 or cleaning of the filter support plate 4 inside the generator body 1 is required, the fan mechanism 7 and the filter support plate 4 can then be installed or placed on the inner cover support plate 5. The operator then controls the end cover 3 to mate with the inner cover support plate 5. Once the end cover 3 and the inner cover support plate 5 are mated, the operator releases the power strut 11. The power strut 11 then rotates back to its original position using the torque of the compressed torsion spring 12. This causes the power strut 11 to push the first guide plate 13 to move inside the mating support plate 9 until the inclined surface of the first guide plate 13 abuts against the inclined surface of the second guide rod 15. Thus, the first guide plate 13 pushes the second guide rod 15 inside the mating support plate 9. The end cover 3 and the inner cover support plate 5 are slid to the inner wall of the positioning support groove 17, thus realizing the docking and installation of the end cover 3 and the inner cover support plate 5. This method ensures the convenience of docking and combining the end cover 3 and the inner cover support plate 5, and also ensures the convenience of disassembling, maintaining and cleaning the generator body 1 after a certain period of operation. It improves the disadvantage of the traditional generator body 1 and end cover 3 being fixed by bolts, which is easy to cause rust and is not convenient for separation. Therefore, it improves the efficiency of maintenance and cleaning operations at the end of the generator body 1 using the fan mechanism 7 and the filter support plate 4, ensures good cooling effect when the generator body 1 is in use, and improves the inconvenience of the traditional filter support plate 4 requiring cumbersome disassembly and installation of bolts for cleaning.

[0031] Working principle: A cooling device for the end winding of a generator. After maintenance of the fan mechanism 7 or cleaning of the filter support plate 4 inside the generator body 1 is required, the fan mechanism 7 and the filter support plate 4 are simply installed or placed on the inner cover support plate 5. Then, the operator controls the end cover 3 to dock with the inner cover support plate 5. When the end cover 3 and the inner cover support plate 5 are docked, the operator releases the power support 11. The power support 11 is then rotated and reset by the torque performance of the compressed torsion spring 12. Therefore, the power support 11 pushes the first guide plate 13 to move inside the docking support plate 9 until the inclined surface of the first guide plate 13 abuts against the inclined surface of the second guide rod 15. Thus, the first guide plate 13 pushes the second guide rod 15 to slide inside the docking support plate 9 to the inner wall of the positioning support groove 17, thereby realizing the docking installation of the end cover 3 and the inner cover support plate 5.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. Cooling device for the end winding of an electric generator comprising a generator body (1), characterized in that: An inner cover plate (5) is fixedly installed on the surface of the generator body (1). An end cover (3) is slidably installed on the surface of the inner cover plate (5). A docking groove (8) is opened on the surface of the inner cover plate (5). A docking plate (9) is slidably installed on the inner wall of the docking groove (8) on the inner cover plate (5). An auxiliary plate (10) is fixedly installed on the surface of the docking plate (9). A power support (11) is rotatably installed on the inner side of the auxiliary plate (10). A first guide plate (13) is slidably installed on the inner side of the docking plate (9). A second guide rod (15) is slidably installed on the inner side of the docking plate (9). A positioning groove (17) is opened on the inner side of the inner cover plate (5). The surface of the second guide rod (15) is slidably engaged with the inner wall of the positioning groove (17).

2. A cooling arrangement for an end winding of an electrical generator according to claim 1, characterized in that: A filter support plate (4) is provided on the inner side of the inner cover support plate (5), and a connecting support rod (6) is fixedly installed on the inner side of the inner cover support plate (5). A fan mechanism (7) is fixedly installed on the end of the connecting support rod (6) away from the inner cover support plate (5).

3. A cooling arrangement for an end winding of an electrical generator as claimed in claim 1, characterized in that: The surface of the docking support plate (9) is fixedly installed on the inner side of the end cover (3), and the surface of the docking support plate (9) is inclined.

4. A cooling arrangement for an end winding of an electrical generator according to claim 1, characterized in that: A torsion spring (12) is rotatably sleeved on the surface of the power support (11). The two ends of the torsion spring (12) are respectively fixedly installed on the surface of the power support (11) and the inner side of the auxiliary support plate (10). The power support (11) is in the shape of an I-beam.

5. A cooling arrangement for an end winding of an electrical generator as claimed in claim 1, characterized in that: A first spring (14) is fixedly installed on the surface of the first guide plate (13), and the two ends of the first spring (14) are fixedly installed on the surface of the first guide plate (13) and the inner side of the connecting support plate (9), respectively.

6. A cooling arrangement for an end winding of an electrical generator according to claim 1, characterized in that: A second spring (16) is fixedly installed on the surface of the second guide rod (15), and the two ends of the second spring (16) are respectively fixedly installed on the surface of the second guide rod (15) and the inner side of the connecting support plate (9).

7. A cooling arrangement for an end winding of an electrical generator as claimed in claim 1, characterized in that: A support base (2) is fixedly installed on the surface of the generator body (1).

8. A cooling arrangement for an end winding of an electrical generator according to claim 1, characterized in that: The second guide rod (15) and the first guide plate (13) are both inclined surfaces, and a positioning block (18) is fixedly installed on the surface of the connecting support plate (9).

Images