Special tool for pulling out magnetic pole key of water-turbine generator set

Abstract

The special tool for pulling out the magnetic pole key of the water-turbine generator set comprises a main body piece, the main body piece is used for transmitting acting force needed when the magnetic pole key is pulled out and comprises an inclined plate and a vertical plate, the inclined plate comprises a long installation plate and a short installation plate, one end of the long installation plate is provided with a first inclined face, and one end, close to the first inclined face, of the short installation plate is provided with a second inclined face. The vertical plate is connected between the inclined surface I and the inclined surface II, the cross sections of the long mounting plate and the short mounting plate are cross-shaped, two grooves are symmetrically formed in the lower end of the vertical plate, and the lower end of the vertical plate is fixedly connected with the magnetic pole key. According to the tool special for pulling out the magnetic pole key of the water-turbine generator set, the main body piece is pushed to ascend through the two driving pieces, the magnetic pole key is driven to move upwards, a gap is generated on the combination face of the long key and the short key of the magnetic pole key, the magnetic pole key can be detached, safety and rapidness are achieved, personal and equipment safety risks can be greatly reduced, key pulling operation efficiency is improved, and practicability is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to water turbine generator unit overhauling equipment technical field, concretely relates to a special tool of water turbine generator unit magnetic pole key pulling. BACKGROUND

[0002] Water turbine generator refers to the water turbine as the prime mover and converts water energy into electric energy, water flow through the water turbine, water energy is converted into mechanical energy, the rotating shaft of the water turbine drives the rotor of the generator, and the mechanical energy is converted into electric energy and output, which is the main power equipment for producing electric energy in the hydropower station.

[0003] When the water turbine generator unit is overhauled, the rotor magnetic pole key of the generator unit needs to be pulled out with a special tool, and the rotor magnetic pole is removed, the magnetic pole key of the water turbine generator unit is fixed with wedge-shaped magnetic pole key, the magnetic pole key is divided into long and short keys, a pair of magnetic pole keys is composed of long and short keys, the magnetic pole key is installed by using a big hammer to hit tightly and the matching surface is combined tightly, and it is difficult to pull out, each magnetic pole key is generally designed as 3-4 pairs, and part of the design has only a single pair of keys, so the force required for pulling the key is very large. There are two kinds of conventional key pulling methods: the first kind is to use a key pulling device and a bridge machine to pull the key, which is dangerous and needs to leave enough length on the upper end of the magnetic pole key, and the upper end of the magnetic pole key is not reserved in part of the design, so this method is not suitable for this method; the second kind is to hammer the short key downward, so that the long and short key matching surface generates a gap to separate the key, and this method is not suitable for single pair of magnetic pole keys with large combined surface, high matching surface ratio and large friction force, and it is not easy to pull out the magnetic pole key. UTILITY MODEL CONTENTS

[0004] The utility model aims at the deficiencies of prior art, and provides a special tool for pulling the magnetic pole key of the water turbine generator unit.

[0005] The specific technical scheme is as follows:

[0006] A special tool for pulling the magnetic pole key of the water turbine generator unit, comprising

[0007] The main body is used for transmitting the force required when the magnetic pole key is pulled out, and comprises an inclined plate and a vertical plate, the inclined plate comprises a long mounting plate and a short mounting plate, one end of the long mounting plate is provided with an inclined surface one, the short mounting plate is provided with an inclined surface two close to one end of the inclined surface one, the inclined surface one and the inclined surface can be matched and connected to each other, the vertical plate is connected between the inclined surface one and the inclined surface two, the cross section of the long mounting plate and the short mounting plate is in the shape of a cross, two bevels are symmetrically arranged at the lower end of the vertical plate, and the lower end of the vertical plate is fixedly connected with the magnetic pole key;

[0008] The driving part is used for providing the force required for pulling the magnetic pole key, and two driving parts are arranged on the two sides of the main body, and the output end of the driving part is in abutment with the two ends of the main body; and

[0009] Horizontal tool for observing the lifting height of the two driving parts on both sides of the main body when the magnetic pole key is pulled out, the horizontal tool is placed on the main body and is located in the same vertical plane with the two driving parts; wherein the main body is pushed up by the two driving parts, the magnetic pole key is driven to displace upward, a gap is generated on the combined surface of the magnetic pole key to realize the disassembly of the magnetic pole key.

[0010] Optionally, the vertical plate and the inclined plate form a 60° angle.

[0011] Optionally, the driving part is a jack.

[0012] Optionally, the connecting surface of the long mounting plate and the short mounting plate with the corresponding jack is roughened.

[0013] Optionally, the two bevels of the lower end of the main body are 45°.

[0014] Optionally, the lower end of the vertical plate is fixedly connected with the magnetic pole key by welding.

[0015] Optionally, the horizontal tool is a magnetic level.

[0016] Optionally, two through holes are symmetrically arranged on the horizontal tool, an installation cylinder is vertically connected in the through hole, and a horizontal liquid is arranged in the installation cylinder.

[0017] Optionally, a scale is arranged on the outer wall of the installation cylinder.

[0018] Optionally, the straight edge of the long mounting plate and the short mounting plate away from the vertical plate is chamfered.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The utility model discloses novel structure, reasonable in design, the setting of inclined plane one and inclined plane two is more in line with the requirement of on -the -spot construction, and the connection of vertical plate and magnetic pole key is convenient, the setting of jack one and jack two can provide the power required for pulling the magnetic pole key, is more labor -saving, the rough treatment of the connecting surface of long mounting plate and jack one, the rough treatment of the connecting surface of short mounting plate and jack two can increase the friction between jack one and jack two and long mounting plate and short mounting plate respectively, is more safe, the setting of level can keep the main body horizontal during construction, the main body is pushed up by jack one and jack two, drives the magnetic pole key to move upward, and the gap is generated on the combined surface of the long key and the short key of the magnetic pole key, so that the magnetic pole key can be disassembled, is more safe, fast, can greatly reduce the personal and equipment safety risk, improves the key operation efficiency, and the practicality is better. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1It is a structure schematic view of a special tool for pulling magnetic pole key of a hydroelectric generating set according to the utility model.

[0022] Figure 2 It is Figure 1 A part of the structure schematic view of the utility model is enlarged.

[0023] Figure 3 It is a front view of a special tool for pulling magnetic pole key of a hydroelectric generating set according to the utility model.

[0024] Figure 4 It is a top view of a special tool for pulling magnetic pole key of a hydroelectric generating set according to the utility model.

[0025] Figure 5 It is a structure schematic view of a special tool for pulling magnetic pole key of a hydroelectric generating set according to the utility model in use.

[0026] In the figure: 1, main body piece; 2, long mounting plate; 3, inclined plane one; 4, vertical plate; 5, short mounting plate; 6, inclined plane two; 7, jack one; 8, jack two; 9, bevel; 10, magnetic pole key; 11, magnetic level; 12, chamfer; 13, through hole; 14, mounting cylinder; 15, horizontal liquid; 16, scale; 17, rotor magnetic yoke; 18, rotor magnetic pole. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0029] The utility model will be further described below with reference to the drawings and specific embodiments, but not as the limitation of the utility model.

[0030] The special tool for pulling magnetic pole key of a hydroelectric generating set provided in the utility model, referring to Figures 1-5 , comprising:

[0031] The main body 1 is used to transmit the force required when the magnetic pole key 10 is pulled out, and includes an inclined plate and a vertical plate 4. The inclined plate includes a long mounting plate 2 and a short mounting plate 5. The long mounting plate 2 is provided with an inclined surface 1 at one end. The short mounting plate 5 is provided with an inclined surface 2 near one end of the inclined surface 1. The inclined surface 1 and the inclined surface 2 can be matched and connected to each other. The vertical plate 4 is connected between the inclined surface 1 and the inclined surface 2. The cross sections of the long mounting plate 2 and the short mounting plate 5 are both in the shape of a cross. The vertical plate 4 is provided with two bevels 9 at the lower end symmetrically. The lower end of the vertical plate 4 is fixedly connected with the magnetic pole key 10.

[0032] The driving part is used to provide the force required to pull out the magnetic pole key 10. Two driving parts are placed on both sides of the main body 1. The output ends of the driving parts are in abutment with both ends of the main body 1.

[0033] The horizontal tool is used to observe the lifting height of the driving parts on both sides of the main body 1 when the magnetic pole key 10 is pulled out. The horizontal tool is placed on the main body 1 and is in the same vertical plane as the two driving parts. Through the two driving parts, the main body 1 is pushed up, driving the magnetic pole key 10 to move upward, so that a gap is generated on the joint surface of the magnetic pole key 10, thereby realizing the disassembly of the magnetic pole key 10.

[0034] In the embodiment, the main body 1 is a key component for transmitting the force required when the magnetic pole key 10 is pulled out. The structural design of the main body 1 helps to effectively transmit the force provided by the jack to the magnetic pole key 10. The long mounting plate 2 and the short mounting plate 5 are connected through the vertical plate 4, forming a stable structure, so that the main body 1 can be stably connected with the magnetic pole key 10 and transmit the force provided by the driving part to the magnetic pole key 10. The driving part is used to provide the force required to pull out the magnetic pole key 10. The horizontal tool is used to observe whether the lifting height of the driving parts on both sides of the main body 1 is consistent when the magnetic pole key 10 is pulled out. The horizontal tool is placed on the main body 1 and is in the same vertical plane as the two driving parts. By observing the horizontal tool, it can be ensured that the main body 1 remains horizontal during the lifting process, avoiding equipment damage or safety accidents caused by uneven force on both sides. When the magnetic pole key 10 needs to be disassembled, first, the lower end of the vertical plate 4 of the main body 1 is fixedly connected with the magnetic pole key 10. Then, the two driving parts are started to make them elongate synchronously, pushing the main body 1 up. Since the main body 1 is fixedly connected with the magnetic pole key 10, the magnetic pole key 10 will also move upward with the main body 1. In this process, the horizontal state of the main body 1 is observed through the horizontal tool to ensure that the lifting height of the driving parts on both sides is consistent. With the upward displacement of the magnetic pole key 10, a gap will be generated on the joint surface of the magnetic pole key 10, finally realizing the disassembly of the magnetic pole key 10. Compared with the traditional methods of pulling out the magnetic pole key 10, such as using a bridge machine to drive a key puller or hammering a short key to pull out the key, this method is safer and faster. It can greatly reduce the safety risk of personnel and equipment and improve the efficiency of key pulling operation.

[0035] Reference Figures 2-5, the vertical plate 4 and the inclined plate are 60°, so that the vertical plate 4 and the arc-shaped magnetic pole key 10 are consistent. Because the angle of the vertical plate 4 and the magnetic pole key 10 is matched, the force can be more evenly transmitted from the vertical plate 4 to the magnetic pole key 10 when pulling the magnetic pole key 10. According to the principle of force transmission, when the contact surface angle of two components is consistent, the force transmission direction is more perpendicular to the contact surface, which can reduce the loss and uneven distribution of force in the transmission process. For example, in the process of pulling the key, the force provided by the jack is transmitted to the vertical plate 4 through the main body 1, and then to the magnetic pole key 10. If the angle of the vertical plate 4 and the magnetic pole key 10 is inconsistent, the force may produce a component force in the transmission process, causing the magnetic pole key 10 to be unevenly stressed, and this 60° angle design avoids this situation, so that the magnetic pole key 10 can be pulled out more smoothly.

[0036] Referring to Figure 4 , the driving part is provided as a jack. The jack can more accurately control the output force. In the process of pulling the magnetic pole key 10, the size of the force needs to be adjusted according to the specific situation of the magnetic pole key 10 (such as the tightness of the combination, material, etc.). The operator can control the thrust of the jack through the adjusting device of the jack, such as the pressure regulating valve in the hydraulic system, to avoid damaging the magnetic pole key 10 or other related equipment due to excessive force, or the magnetic pole key 10 cannot be pulled out due to insufficient force. Among them, the lower end of the long mounting plate 2 corresponds to the installation of the jack 7, and the lower end of the short mounting plate 5 corresponds to the installation of the jack 8.

[0037] Referring to Figure 4 , the long mounting plate 2 and the short mounting plate 5 are roughened on the connecting surface of the corresponding jack. It can prevent the jack and the mounting plate from sliding during the process of pulling the magnetic pole key 10, thereby ensuring the effective transmission of force. The roughened connecting surface can better resist horizontal force, so that the jack will not displace when providing vertical thrust due to horizontal component force. This design is very important in practical application, because it can improve the reliability and safety of the whole magnetic pole key 10 pulling tool, and reduce the risk of accidents caused by unstable connection.

[0038] Specifically, referring to Figure 5 , the two bevels 9 at the lower end of the main body 1 are 45°, and the 45° bevel 9 can more closely match the corresponding part of the magnetic pole key 10 in shape. Because the 45° bevel 9 can provide a stable connection structure when connected with the magnetic pole key 10, the main body 1 can more stably drive the magnetic pole key 10 to displace upward during the key pulling operation. This stability is crucial to the whole key pulling operation, because it ensures that the magnetic pole key 10 can be pulled out in the expected way when the jack pushes the main body 1 to rise, reducing the shaking or deviation caused by unstable connection.

[0039] Referring to Figure 5The lower end of the vertical plate 4 is fixedly connected with the magnetic pole key 10 by welding, so that higher connection strength and stability can be provided, and the loosening or separation of the vertical plate 4 from the magnetic pole key 10 can be avoided during use.

[0040] Specifically, the horizontal tool is a magnetic level ruler 11, which has strong magnetism at the bottom and can be adsorbed on the metal surface, so as to facilitate measurement on the metal surface, free the hands and improve the measurement efficiency. The horizontal tool is made of high-quality materials such as aluminum alloy, is light and durable, and is not easy to deform.

[0041] Two through holes 13 are symmetrically arranged on the horizontal tool, and an installation cylinder 14 is vertically connected in the through hole 13. The installation cylinder 14 is provided with a horizontal liquid 15. The conventional horizontal tool can only rely on a single bubble or a simple liquid level indication, but the design of the installation cylinder 14 and the scale 16 can provide more detailed measurement results. The scale 16 is arranged on the outer wall of the installation cylinder 14. The accuracy can reach the minimum scale unit of the scale 16, and the accuracy is obviously improved compared with the conventional horizontal tool, so that the work demand with higher requirements for the levelness can be met.

[0042] The straight edges of the long installation plate 2 and the short installation plate 5 away from the vertical plate 4 are each provided with a chamfer 12. The chamfer 12 can reduce the sharpness of the straight edge and reduce the risk of injury that may be caused during use, especially in the scene where the installation plates need to be frequently contacted or moved.

[0043] Principle of implementation: first, the jack one 7 is placed under the long mounting plate 2, and the connecting surface of the long mounting plate 2 and the jack one 7 is roughened to increase the friction force and ensure the effective transmission of the force; similarly, the jack two 8 is placed under the short mounting plate 5, and the connecting surface of the short mounting plate 5 and the jack two 8 is also roughened. A level 11 is placed above the main body 1, two through holes 13 are symmetrically arranged on the level 11, and a mounting cylinder 14 is vertically connected in the through hole 13, a horizontal liquid 15 is arranged in the mounting cylinder 14, and a scale 16 is arranged on the outer wall of the mounting cylinder 14. When the magnetic pole key 10 is used, it is installed between the rotor magnetic yoke 17 and the rotor magnetic pole 18, and the magnetic pole key 10 is divided into long keys and short keys. When the magnetic pole key 10 needs to be removed, the jack one 7 and the jack two 8 are placed on the generator at appropriate positions, and then the main body 1 is placed on the jack one 7 and the jack two 8. The lower end of the vertical plate 4 is fixedly connected with the magnetic pole key 10 by welding, so that the connection is firm, and at this time the groove 9 at the bottom of the vertical plate 4 is closely combined with the magnetic pole key 10. Control the jack one 7 and the jack two 8 to elongate at the same time. During the elongation process, whether the two ends of the main body 1 are balanced is judged by observing the scale of the horizontal liquid 15 in the mounting cylinder 14 on the level 11. Since the mounting cylinders 14 in the two through holes 13 can be connected, the horizontal liquid 15 can flow between the two mounting cylinders 14, so the balance state of the main body 1 can be accurately monitored. With the elongation of the jack one 7 and the jack two 8, they will drive the main body 1 to move upwards. Since the lower end of the vertical plate 4 is fixedly connected with the magnetic pole key 10, the upward movement of the main body 1 will drive the magnetic pole key 10 to move upwards. In this process, the joint surface of the long keys and the short keys on the magnetic pole key 10 will produce a gap, and when the gap is large enough, the magnetic pole key 10 can be disassembled.

[0044] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made by applying the contents of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A special tool for pulling the magnetic pole key of a hydroelectric generator set, characterized in that, The utility model relates to a magnetic pole key dismounting device, which comprises a main body piece, a driving piece and a horizontal tool. The main body piece is used for transmitting the action force required when the magnetic pole key is pulled out, and comprises an inclined plate and a vertical plate. The inclined plate comprises a long mounting plate and a short mounting plate. One end of the long mounting plate is provided with an inclined surface one.

2. The tool for pulling the magnetic pole key of a hydroelectric generator unit according to claim 1, characterized in that, The short mounting plate is provided with an inclined surface two near one end of the inclined surface one.

3. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, The inclined surface one and the inclined surface two can be matched and connected to each other.

4. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 3, characterized in that, The vertical plate is connected between the inclined surface one and the inclined surface two.

5. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, The cross sections of the long mounting plate and the short mounting plate are both in the shape of a cross.

6. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, Two bevels are symmetrically arranged at the lower end of the vertical plate.

7. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, The lower end of the vertical plate is fixedly connected with the magnetic pole key.

8. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, The driving piece is used for providing the action force required when the magnetic pole key is pulled out.

9. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 8, characterized in that, Two driving pieces are arranged on the two sides of the main body piece.

10. The tool for pulling the magnetic pole key of the hydroelectric generator set according to claim 1, characterized in that, The output end of the driving piece is in abutment with the two end portions of the main body piece. The horizontal tool is used for observing the lifting height of the driving pieces on the two sides of the main body piece when the magnetic pole key is pulled out. The horizontal tool is arranged on the main body piece and is located in the same vertical plane as the two driving pieces. The main body piece is pushed up by the two driving pieces, and the magnetic pole key is driven to move upward so that a gap is generated on the joint surface of the magnetic pole key, thereby realizing the dismounting of the magnetic pole key. The vertical plate and the inclined plate form an included angle of 60°. The driving piece is a jack. The connecting surfaces of the long mounting plate and the short mounting plate are roughened. The two bevels at the lower end of the main body piece are both in the shape of 45°. The lower end of the vertical plate is fixedly connected with the magnetic pole key by welding. The horizontal tool is a magnetic level. Two through holes are symmetrically arranged on the horizontal tool. An installation cylinder is vertically connected in the through hole. A horizontal liquid is arranged in the installation cylinder. A scale is arranged on the outer wall of the installation cylinder. The straight edges of the long mounting plate and the short mounting plate away from the vertical plate are all chamfered. The utility model discloses a magnetic pole key dismounting device, which comprises a main body piece, a driving piece and a horizontal tool.

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