A water turbine rotor magnetic pole hanging device and a working method thereof

Abstract

The application discloses a water turbine rotor magnetic pole hanging device and a working method thereof, and belongs to the technical field of water turbine generator set installation. The device comprises a lifting ring, a guide chain, a guide chain controller, a right-angle support and an L-shaped support. The lifting ring is connected with the upper portion of the guide chain controller. The guide chain is wound on the guide chain controller and can adjust the winding and releasing length through the guide chain controller. The guide chain is fixedly connected with the right-angle support and the L-shaped support. The structure of the right-angle support is that the lower ends of two vertically connected vertical plates are connected with a horizontal bottom plate. The structure of the L-shaped support is that a vertical plate is connected with a horizontal bottom plate. When the magnetic pole is hung, two L-shaped supports are arranged on the side edges of the magnetic pole close to the yoke end, and two right-angle supports are arranged on the top corners of the magnetic pole away from the yoke end. The application can improve the installation efficiency of the water turbine rotor magnetic pole, avoid scratches and marks on the surface of the magnetic pole caused by steel wire binding, and is simple to disassemble, practical, and low in installation cost of the water turbine generator magnetic pole hanging.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of installation of hydroelectric generating set, and particularly relates to a hydro-turbine rotor magnetic pole hanging device and a working method thereof. BACKGROUND

[0002] The hydroelectric generator rotor is composed of a rotating shaft, a support, a magnetic yoke, a magnetic pole and a current collecting device, and is used to generate a magnetic field, transform energy and transmit torque, and is an important component of the hydroelectric generator. The magnetic pole and the magnetic yoke of the hydroelectric generator are usually punched from a cold-rolled steel plate, and the weight of the magnetic pole and the magnetic yoke accounts for 50% to 65% of the total weight of the hydroelectric generator rotor. With the increasing power of the hydroelectric generator, the weight of the hydroelectric generator is also increasing, and the installation of the rotor magnetic pole is also becoming more and more difficult, which cannot be completed independently by manpower and must rely on mechanical hoisting to install the magnetic pole on the rotor support.

[0003] At present, when the magnetic pole is installed, due to the lack of professional tooling, the steel wire rope is directly bound on the magnetic pole by the staff, and then the overhead crane or the crane is used for hoisting and hanging, but this is easy to scratch the surface of the magnetic pole, and even cause the magnetic pole to be pressed and deformed, and in severe cases, the magnetic pole will be cracked under stress, thereby causing unnecessary repair work, increasing the installation cost and wasting time and effort. SUMMARY

[0004] In order to solve the above-mentioned problems, the purpose of the present application is to provide a hydro-turbine rotor magnetic pole hanging device and a working method thereof, which can avoid scratches and collisions during the hanging of the magnetic pole of the hydroelectric generator, and at the same time improve the work efficiency, save time and effort, and reduce the installation cost of the magnetic pole of the hydroelectric generator.

[0005] The present application is realized by the following technical solutions:

[0006] The hydro-turbine rotor magnetic pole hanging device disclosed by the present application comprises a lifting ring, a guide chain, a guide chain controller, two right-angle supports and two L-shaped supports. The lifting ring is connected with the upper part of the guide chain controller, the guide chain is wound on the guide chain controller and can adjust the length of winding and releasing through the guide chain controller, the guide chain is fixedly connected with the right-angle supports and the L-shaped supports respectively, the structure of the right-angle support is that two vertical connecting vertical plates are connected with a horizontal bottom plate at the lower end, and the structure of the L-shaped support is that a vertical plate is connected with a horizontal bottom plate.

[0007] When the magnetic pole is hung, the two L-shaped supports are arranged on the side edge of the magnetic pole close to the magnetic yoke end, and the two right-angle supports are arranged on the top corner of the magnetic pole away from the magnetic yoke end.

[0008] Preferably, a limiting rod for limiting the displacement of the magnetic pole is rotatably connected on the vertical plate of the L-shaped support.

[0009] Preferably, an elastic gasket is arranged on the inner surface of the right-angle support and the L-shaped support in contact with the magnetic pole.

[0010] Further preferably, the elastic gasket is a detachable modular structure.

[0011] Preferably, the chain guide controller comprises a body, four corners of the body are respectively fixed with a cylindrical bearing, a shaft sleeve is sleeved on the bearing, and the chain is wound on the shaft sleeve.

[0012] Further preferably, one end of the chain is fixedly connected with the shaft sleeve.

[0013] Further preferably, a self-locking device is arranged between the bearing and the shaft sleeve.

[0014] Further preferably, the self-locking device comprises a stop pawl and a ratchet wheel arranged on the bearing.

[0015] The working method of the water turbine rotor magnetic pole hanging device disclosed in the application comprises:

[0016] The lifting ring is connected with the lifting device, two right-angle supports are arranged at two top corners of the magnetic pole, two L-shaped supports are arranged on the side edges of the magnetic pole close to the yoke, the chain guide controller is adjusted to tension the right-angle supports and the L-shaped supports through the force of the chain, and the magnetic pole is lifted through the lifting ring; after the magnetic pole is completely lowered into the yoke, the lifting device is lowered, the right-angle supports and the L-shaped supports are removed, and the magnetic pole hanging is completed.

[0017] Compared with the prior art, the application has the following beneficial technical effects:

[0018] The water turbine rotor magnetic pole hanging device disclosed in the application can safely and stably hang the magnetic pole when the magnetic pole is hung, the length of the chain can be adjusted through the chain guide controller, the four supports in a split type can be suitable for magnetic poles of various sizes, the installation efficiency of the water turbine rotor magnetic pole can be improved, the scratches and indentations caused by the steel wire rope on the surface of the magnetic pole can be avoided, the device is simple to disassemble, has high practicability, and the installation cost of the water turbine generator magnetic pole hanging is reduced.

[0019] Further, the upright plate of the L-shaped support is rotationally connected with a limiting rod for limiting the displacement of the magnetic pole, so that the safety of the hanging process is ensured.

[0020] Further, the inner surfaces of the right-angle supports and the L-shaped supports in contact with the magnetic pole are each provided with an elastic gasket, so that the scratches and bumps of the magnetic pole can be effectively reduced.

[0021] Further, the elastic gasket is a detachable modular structure, so that the places with greater wear can be replaced in time, which is convenient and cost-saving.

[0022] Further, the chain guide controller adopts bearing and shaft sleeve structure, and is reliable, smooth and stable in operation.

[0023] Further, one end of the chain guide is fixedly connected with the shaft sleeve, preventing the chain guide from falling off due to too large extension length, and improving safety and stability.

[0024] Further, a self-locking device is arranged between the bearing and the shaft sleeve, preventing the magnetic pole from falling due to change of the chain guide length during hanging.

[0025] Further, the self-locking device adopts stop pawl and ratchet structure, and is simple and reliable in structure.

[0026] The working method of the water turbine rotor magnetic pole hanging device disclosed by the application is simple in operation, can better protect the magnetic pole during hoisting, avoids scratching of the magnetic pole, saves time and effort, and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the application;

[0028] Figure 2 Fig. 2 is a schematic diagram of the state of the limiting rod on the L-shaped support in different positions;

[0029] Figure 3 Fig. 3 is a schematic diagram of the structure of the chain guide controller;

[0030] Figure 4 Fig. 4 is a schematic diagram of the structure of the self-locking device of the chain guide controller adopting ratchet and stop pawl;

[0031] Figure 5 Fig. 5 is a schematic diagram of the working state of the application.

[0032] In the figure, 1 is a lifting ring, 2 is a chain guide, 3 is a chain guide controller, 3-1 is a bearing, 3-2 is a shaft sleeve, 3-3 is a ratchet, 3-4 is a stop pawl, 4 is a right-angle support, 5 is an elastic gasket, 6 is a limiting rod, 7 is a connecting bolt, 8 is a magnetic pole hanging device, 9 is a magnetic pole, and 10 is an L-shaped support. DETAILED DESCRIPTION

[0033] The application will be further described in detail below in combination with the drawings and specific embodiments, and the content is an explanation but not a limitation of the application:

[0034] As Figure 1The water turbine rotor magnetic pole hanging device comprises a lifting ring 1, a guide chain 2, a guide chain controller 3, two right-angle supports 4 and two L-shaped supports 10; the lifting ring 1 is connected with the upper part of the guide chain controller 3, the guide chain 2 is wound on the guide chain controller 3 and can adjust the length of winding and releasing through the guide chain controller 3; the guide chain 2 is fixedly connected with the right-angle supports 4 and the L-shaped supports 10 respectively; the structure of the right-angle support 4 is that two vertical connecting vertical plates are connected with a horizontal bottom plate at the lower end; the structure of the L-shaped support 10 is that a vertical plate is connected with a horizontal bottom plate;

[0035] When the magnetic pole 9 is hung, the two L-shaped supports 10 are arranged on the side edge of the magnetic pole 9 close to the yoke end, and the two right-angle supports 4 are arranged on the top corner of the magnetic pole 9 away from the yoke end.

[0036] As Figure 2 In a more preferred embodiment of the present application, a limiting rod 6 for limiting displacement of the magnetic pole 9 is rotatably connected to the vertical plate of the L-shaped support 10. The limiting rod 6 is arranged on the upper part of the vertical plate of the L-shaped support 10 through an internal hexagonal head bolt.

[0037] In a more preferred embodiment of the present application, elastic gaskets 5 are arranged on the inner surfaces of the right-angle supports 4 and the L-shaped supports 10 in contact with the magnetic pole 9, which can be rubber gaskets. Preferably, the elastic gaskets 5 are of a detachable modular structure.

[0038] As Figure 3 In a more preferred embodiment of the present application, the guide chain controller 3 comprises a body, a cylindrical bearing 3-1 is fixed at each corner of the body, a shaft sleeve 3-2 is sleeved on the bearing 3-1, and the guide chain 2 is wound on the shaft sleeve 3-2. Preferably, one end of the guide chain 2 is fixedly connected with the shaft sleeve 3-2. Preferably, a self-locking device is arranged between the bearing 3-1 and the shaft sleeve 3-2. When the shaft sleeve 3-2 rotates clockwise, the guide chain can be recovered without any operation; when the shaft sleeve 3-2 rotates counterclockwise, the self-locking device needs to be closed to lengthen the guide chain 2, adjust the hanging device and lift the magnetic pole 9. After the magnetic pole 9 is lifted, the self-locking device automatically falls back to prevent the magnetic pole 9 from falling due to the change in the length of the guide chain 2 during the hanging process. Figure 4 Further preferably, the self-locking device comprises a stop pawl 3-4 and a ratchet 3-3 arranged on the bearing 3-1. Only clockwise rotation is allowed, and when counterclockwise rotation is performed, the stop pawl 3-4 is engaged between the teeth of the ratchet 3-3 to prevent the ratchet 3-3 from rotating, and the ratchet needs to be lifted to rotate counterclockwise. The stop pawl 3-4 is arranged on the shaft sleeve and can be lifted by pulling it outward.

[0039] The structure and working method of the present application will be further explained and described below with reference to a specific embodiment:

[0040] In this embodiment, the magnetic pole hanging device 8 comprises two right-angle supports 4, two L-shaped supports 10, one lifting ring 1, four guide chains 2, one guide chain controller 3 and two limiting rods 6. The limiting rods 6 are arranged on the two L-shaped supports 10 close to the magnetic yoke part; the limiting rods 6 are connected with the L-shaped supports 10 by means of the inner hexagonal head bolts and the inner hexagonal head threads, and the inner hexagonal head threads are arranged on the L-shaped supports 10; the inner sides of the right-angle supports 4 and the L-shaped supports 10 are provided with elastic pads 5; the guide chains 2 are connected with the guide chain controller 3 and are controlled by the guide chain controller 3; the guide chain controller 3 is rotatably adjusted to adjust the length of the guide chains 2 through bearings; the guide chains 2 are connected with the right-angle supports 4 and the L-shaped supports 10 by welding; the right-angle supports 4 and the L-shaped supports 10 are connected in a combined manner, and are suitable for the installation of magnetic poles 9 of different sizes.

[0041] The magnetic pole 9 to be hoisted is 3386mm long, 1160mm wide and weighs 8430kg.

[0042] The lifting ring 1, the guide chains 2, the guide chain controller 3, the right-angle supports 4, the L-shaped supports 10, the limiting rods 6 and the bolts 7 constitute the magnetic pole hanging device 8. The right-angle supports 4 and the L-shaped supports 10 are provided with elastic pads 5; the right-angle supports 4, the L-shaped supports 10 and the guide chains 2 are made of 45# steel; and the connecting bolts 7 are M12 inner hexagonal connecting bolts.

[0043] As shown in Figure 5 , when hanging, the magnetic pole hanging device 8 is connected with the hoisting device, the two right-angle supports 4 are arranged at the two top corners of the magnetic pole 9, the two L-shaped supports 10 are arranged on the side edges of the magnetic pole 9 close to the magnetic yoke part, the guide chain controller 3 is adjusted to make the guide chains 2 pull the right-angle supports 4 and the L-shaped supports 10 tightly, the limiting rods 6 are rotated to make the limiting rods 6 in the locked state, and the magnetic pole 9 is lifted through the lifting ring 1. When the height of the magnetic pole 9 falling into the magnetic yoke is greater than two-thirds, the limiting rods 6 are rotated to make the limiting rods 6 unlocked. When the magnetic pole 9 completely falls into the magnetic yoke, the hoisting device is lowered, the right-angle supports 4 and the L-shaped supports 10 are removed, and the hanging of the magnetic pole 9 is completed.

[0044] The above only describes the embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, or make equivalent structures or equivalent process conversions by using the contents of the present application and the drawings, or directly or indirectly use in other related technical fields, which should be covered in the protection scope of the present application.

Claims

1. A water turbine rotor magnet pole hanging device, characterized in that, The device comprises a lifting ring (1), a guide chain (2), a guide chain controller (3), two right-angle supports (4) and two L-shaped supports (10); the lifting ring (1) is connected with the upper part of the guide chain controller (3), the guide chain (2) is wound on the guide chain controller (3) and can adjust the length of winding and releasing through the guide chain controller (3); the guide chain (2) is fixedly connected with the right-angle supports (4) and the L-shaped supports (10) respectively; the structure of the right-angle support (4) is that two vertical connecting vertical plates are connected with a horizontal bottom plate at the lower end; the structure of the L-shaped support (10) is that a vertical plate is connected with a horizontal bottom plate; A limiting rod (6) for limiting the displacement of the magnetic pole (9) is rotatably connected to the vertical plate of the L-shaped support (10); The guide chain controller (3) comprises a body, a cylindrical bearing (3-1) is fixed at each corner of the body, a shaft sleeve (3-2) is sleeved on the bearing (3-1), and the guide chain (2) is wound on the shaft sleeve (3-2); a self-locking device is arranged between the bearing (3-1) and the shaft sleeve (3-2); When the magnetic pole (9) is hung, the two L-shaped supports (10) are arranged on the side edge of the magnetic pole (9) close to the yoke end, the two right-angle supports (4) are arranged on the top corners of the magnetic pole (9) away from the yoke end, and the inner surfaces of the right-angle supports (4) and the L-shaped supports (10) in contact with the magnetic pole (9) are each provided with an elastic gasket (5).

2. The water turbine rotor pole hanging device according to claim 1, characterized in that, The elastic gasket (5) is a detachable modular structure.

3. The water turbine rotor pole hanging device according to claim 1, characterized in that, One end of the guide chain (2) is fixedly connected with the shaft sleeve (3-2).

4. The water turbine rotor pole hanging device according to claim 1, characterized in that, The self-locking device comprises a stop pawl (3-4) and a ratchet (3-3) arranged on the bearing (3-1).

5. The method of claim 1 to 4, wherein the method is characterized by, The device comprises: The lifting ring (1) is connected with a hoisting device, the two right-angle supports (4) are arranged on the two top corners of the magnetic pole (9), the two L-shaped supports (10) are arranged on the side edge of the magnetic pole (9) close to the yoke part, the guide chain controller (3) is adjusted to make the guide chain (2) tension the right-angle supports (4) and the L-shaped supports (10), and the magnetic pole (9) is lifted through the lifting ring (1); when the magnetic pole (9) completely falls into the yoke, the hoisting device is lowered, the right-angle supports (4) and the L-shaped supports (10) are removed, and the hanging of the magnetic pole (9) is completed.

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