Detachable magnetic pole type fan of high-rotating-speed vertical hydro-generator

Abstract

The invention relates to the field of hydro-generators, and discloses a detachable magnetic pole type fan of a high-rotating-speed vertical hydro-generator, which consists of an upper fan and a lower fan. The upper fan is fixedly connected with the magnet yoke through bolts, the lower fan is fixedly connected with the magnet yoke through bolts, and the fans are driven to do circumferential rotation motion through rotation of the magnet yoke of the generator, so that the ventilation and heat dissipation functions are achieved. Effective ventilation and heat dissipation of the water-turbine generator set are achieved through rotation of the fan, the running temperature of the set is reduced, meanwhile, the upper fan is of a structure formed by combining and fixing the notch and the cover plate, the whole upper fan does not need to be dismantled when a magnetic pole is dismantled, only the cover plate needs to be dismantled, and operation is convenient. Therefore, the operation stability of the generator set is improved, the maintenance period of the generator set is prolonged, and the field installation and maintenance are greatly facilitated.

Description

Technical Field

[0001] The invention relates to the field of water turbine generators, in particular to a detachable magnetic pole fan of a high-speed vertical water turbine generator. Background Art

[0002] When the hydro-turbine generator is running, a lot of heat will be generated due to electromagnetic induction. It is necessary to effectively ventilate and cool the generator set to avoid accidents such as overheating and burning the unit. At the same time, when the unit is partially overhauled, the magnetic poles often need to be dismantled and repaired separately. Since the upper fan is above the magnetic poles, the upper fan needs to be dismantled when the magnetic poles are disassembled, which has a serious impact on the maintenance quality and cycle of the unit. Summary of the invention

[0003] In view of this, the purpose of the present invention is to disclose a detachable pole fan for a high-speed vertical hydro-turbine generator. In a high-speed vertical unit, by arranging fans at the upper and lower ends of the yoke, the rotation of the yoke drives the fans to rotate in a circular motion, thereby realizing efficient ventilation and heat dissipation functions. At the same time, the upper fan adopts a structure of notches and cover plates, which can meet the requirement that when disassembling and assembling the pole, there is no need to dismantle the entire upper fan, only the cover plate needs to be removed, that is, the pole can be vertically removed and installed from the inside of the generator, which improves the operating stability and maintenance cycle of the unit and greatly facilitates on-site installation and maintenance.

[0004] The technical solution of the present invention is: it consists of an upper fan and a lower fan; the upper fan is fixedly connected to the yoke by bolts, and the lower fan is fixedly connected to the yoke by bolts. The fan is driven to perform circular rotation through the rotation of the generator yoke to achieve the function of ventilation and heat dissipation.

[0005] As a preferred embodiment, the upper fan is composed of a cover plate, a wind shield plate, a first lower ring plate, first fan blades, and a first upper ring plate; the first fan blades are evenly distributed around the circumference and are welded together with the first lower ring plate and the first upper ring plate, the cover plate is fixed by bolts, and the wind shield plate and the first upper ring plate are welded together to form a fan structure.

[0006] As a preferred embodiment, the first upper ring plate of the upper fan is notched according to the number and position of the magnetic poles, and the notch is sealed by a cover plate. This can ensure that when removing the magnetic poles, there is no need to remove the entire upper fan, but only the cover plate. The magnetic poles can be vertically removed and installed from the inside of the generator here.

[0007] As a preferred embodiment, the windshield plate has a stepped mating surface on its circumference, which cooperates with the fixing component to form a closed annular cavity.

[0008] As a preferred embodiment, the first lower ring plate has a protruding circumferential step that cooperates with the yoke to radially fix the upper fan.

[0009] As a preferred embodiment, the lower fan is composed of second blades, a second lower ring plate, and a second upper ring plate; the second blades are evenly distributed around the circumference and are welded together with the second lower ring plate and the second upper ring plate to form a fan structure.

[0010] As a preferred embodiment, the second upper ring plate has a protruding circumferential step that cooperates with the yoke to radially fix the lower fan.

[0011] The beneficial effects of the present invention are:

[0012] 1. This high-speed vertical hydro-turbine generator has a detachable pole fan. By arranging fans at the upper and lower ends of the yoke, the rotation of the yoke drives the fan to rotate in a circular motion, achieving efficient ventilation and heat dissipation functions and improving the operating stability and reliability of the unit.

[0013] 2. The present invention can solve the problem of vertically removing and installing the magnetic poles from inside the generator without removing the entire upper fan, and only removing the cover plate in the upper fan, thereby improving the maintenance quality and cycle.

[0014] 3. The present invention has a stable and simple structure, which improves the safety and stability of the unit operation and greatly facilitates on-site installation and maintenance.

[0015] 4. The present invention has strong applicability to hydro-generator sets of different structures and sizes, has a flexible structure, has low requirements on the structure of the generator set rotor, etc., and has wide engineering application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the upper fan structure of the present invention.

[0018] Figure 3 It is a schematic cross-sectional view of the upper fan structure AA of the present invention.

[0019] Figure 4 This is the lower fan structure of the present invention.

[0020] Figure 5 It is a schematic cross-sectional view of the upper fan structure DD of the present invention.

[0021] Markings in the figure: 1-upper fan; 2-lower fan; 3-yoke; 4-pole; 5-cover plate; 6-wind shield; 7-first lower ring plate; 8-first fan blade; 9-first upper ring plate; 10-second fan blade; 11-second lower ring plate; 12-second upper ring plate. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "first", "second", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to 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.

[0024] like Figure 1 As shown, a detachable pole fan of a high-speed vertical hydro-turbine generator is composed of an upper fan 1 and a lower fan 2; the upper fan 1 is fixedly connected to a yoke 3 by bolts, and the lower fan 2 is fixedly connected to the yoke 3 by bolts, and the fan is driven to perform circular rotation through the rotation of the generator yoke to achieve the function of ventilation and heat dissipation.

[0025] like Figure 2 and Figure 3 As shown, the upper fan 1 is composed of a cover plate 5, a wind shield plate 6, a first lower ring plate 7, first blades 8, and a first upper ring plate 9; the first blades 8 are evenly distributed around the circumference and are welded together with the first lower ring plate 7 and the first upper ring plate 9; the cover plate 5 is fixed by bolts and welded together with the first upper ring plate 9 to form a fan structure.

[0026] like Figure 2 and Figure 3 As shown, the first upper ring plate 9 of the upper fan 1 is notched according to the number and position of the magnetic poles 4, and the notch is sealed by the cover plate 5. This can ensure that when removing the magnetic poles 4, there is no need to remove the entire upper fan 1, but only the cover plate 5 needs to be removed, that is, the magnetic poles can be vertically removed and installed from the inside of the generator here.

[0027] like Figure 2 and Figure 3 As shown, the wind shield plate 6 has a stepped mating surface on its circumference, which cooperates with the fixing component to form a closed annular cavity.

[0028] like Figure 3 and Figure 4 As shown, the first lower ring plate 7 has a protruding circumferential step, which is engaged with the yoke 3 to fix the upper fan 1 radially.

[0029] like Figure 3 and Figure 4 As shown, the lower fan 2 is composed of second blades 10, a second lower ring plate 11, and a second upper ring plate 12; the second blades 10 are evenly distributed around the circumference and are welded together with the second lower ring plate 11 and the second upper ring plate 12 to form a fan structure.

[0030] like Figure 3 and Figure 4 As shown, the second upper ring plate 12 has a protruding circumferential step, which is engaged with the yoke 3 to fix the lower fan 2 radially.

[0031] Finally, the protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope and spirit of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these changes and modifications.

Claims

1. A high-speed vertical hydro-turbine generator with a detachable magnetic pole fan, characterized in that: The fan comprises an upper fan (1) and a lower fan (2); the upper fan (1) is fixedly connected to a magnetic yoke (3) by bolts, and the lower fan (2) is fixedly connected to a magnetic yoke (3) by bolts, and the rotation of the generator magnetic yoke drives the fan to perform circular rotational motion.

2. The high-speed vertical hydro-turbine generator with detachable magnetic pole fan according to claim 1 is characterized by: The upper fan (1) is composed of a cover plate (5), a wind shield plate (6), a first lower ring plate (7), first blades (8), and a first upper ring plate (9); the first blades (8) are evenly distributed around the circumference and are welded together with the first lower ring plate (7) and the first upper ring plate (9); the cover plate (5) is fixed by bolts, and the wind shield plate (6) and the first upper ring plate (9) are welded together to form a fan structure.

3. The high-speed vertical hydro-turbine generator with detachable magnetic pole fan according to claim 1 is characterized by: The first upper ring plate (9) of the upper fan (1) is provided with a notch according to the number and position of the magnetic poles (4), and the notch is sealed by a cover plate (5).

4. The high-speed vertical hydro-generator with detachable magnetic pole fan according to claim 2 is characterized by: The wind shield (6) has a stepped mating surface on its circumference, which cooperates with the fixing component to form a closed annular cavity.

5. The high-speed vertical hydro-generator with detachable magnetic pole fan according to claim 2 is characterized by: The first lower ring plate (7) has a protruding circumferential step which is engaged with the yoke (3) to radially fix the upper fan (1).

6. The high-speed vertical hydro-turbine generator with detachable magnetic pole fan according to claim 1 is characterized by: The lower fan (2) is composed of second blades (10), a second lower ring plate (11), and a second upper ring plate (12); the second blades (10) are evenly distributed around the circumference and are welded together with the second lower ring plate (11) and the second upper ring plate (12) to form a fan structure.

7. The high-speed vertical hydro-generator with detachable magnetic pole fan according to claim 1 is characterized by: The second upper ring plate (12) has a protruding circumferential step which is engaged with the yoke (3) to radially fix the lower fan (2).

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