A kind of on-site automatic grinding device for water turbine

Abstract

The present invention provides an on-site automatic grinding device for a water turbine, comprising: a circular track trolley system, the circular track trolley system comprising a circular track and an RGV trolley arranged on the circular track, the circular track is arranged around the runner body, and the RGV trolley can move circumferentially along the circular track; a vertical lifting system arranged on the RGV trolley, the vertical lifting system is a vertical lifting platform; a horizontal linear motion system arranged on the upper part of the vertical lifting platform; a grinding robot arranged on the horizontal linear motion system, the vertical lifting platform is used to drive the horizontal linear motion system to lift and lower, and the horizontal linear motion system is used to drive the grinding robot to move horizontally, so that the grinding robot moves to the position to be polished. The beneficial effects of the present invention are as follows: the grinding robot can be sent to any position of the inner wall of the runner chamber or the blade of the runner body to be polished, realizing the automatic grinding function, and having the advantages of good rigidity, convenient operation, high grinding accuracy and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine maintenance equipment, and in particular to an on-site automatic grinding device for a water turbine. Background Art

[0002] During the maintenance of a turbine, it is necessary to grind the inner wall of the turbine runner chamber and the lower part of the runner blades. On-site grinding is generally done by manual grinding, which is labor-intensive, inefficient, and cannot guarantee the accuracy of manual grinding. In addition, the on-site grinding environment is harsh. The inside of the turbine is a closed structure, the grinding area has a large diameter (about 10 meters) and a high height (about 5 meters), the light is poor, and the dust generated by grinding is serious, which is very harmful to the health of the grinding personnel. Therefore, it is necessary to develop an automatic grinding device for turbines to replace manual grinding inside the turbine to ensure grinding accuracy, improve grinding efficiency, reduce the health hazards of manual grinding to the grinding personnel, and meet the grinding operation requirements of turbines of different sizes. Summary of the invention

[0003] In order to meet the requirements for automatic grinding of a water turbine, an embodiment of the present invention provides an on-site automatic grinding device for a water turbine.

[0004] An embodiment of the present invention provides an on-site automatic grinding device for a water turbine, wherein the water turbine comprises a runner chamber and a runner body arranged in the runner chamber, and the grinding device comprises:

[0005] A circular track trolley system, the circular track trolley system comprising a circular track and an RGV trolley arranged on the circular track, the circular track is arranged around the rotor body and is located between the rotor chamber and the rotor body, and the RGV trolley can move circumferentially along the circular track;

[0006] A vertical lifting system provided on the RGV trolley, wherein the vertical lifting system is a vertical lifting platform;

[0007] A horizontal linear motion system disposed on the upper portion of the vertical lifting platform;

[0008] A grinding robot is arranged on the horizontal linear motion system, the vertical lifting platform is used to drive the horizontal linear motion system to rise and fall, and the horizontal linear motion system is used to drive the grinding robot to move horizontally, so that the grinding robot moves to the inner wall of the wheel chamber or the blade position of the wheel body that needs to be polished.

[0009] Furthermore, the annular track is a polygon with rounded corners at the top corners, and each side of the annular track includes a plurality of linear track segments connected in sequence.

[0010] Furthermore, the annular track includes an upper track and a lower support beam which are arranged opposite to each other in the upper and lower parts, and the upper track and the lower support beam are connected by a plurality of leveling and locking components, and the lower part of the lower support beam is fixed to the track support frame, and a mounting flange and a servo electric cylinder are provided below the track support frame, and the mounting flange is fixed to the inner wall of the wheel chamber, and the upper end of the mounting flange is connected to the outer end of the track support frame, and the upper end of the servo electric cylinder is connected to the inner end of the track support frame.

[0011] Furthermore, the leveling locking component includes a fixing plate, a supporting plate and a pressure plate, the lower part of the fixing plate is fixed on the lower supporting beam, the supporting plate is arranged above the fixing plate and an adjusting screw is arranged between the two, the lower end of the adjusting screw is fixed to the fixing plate and the upper end passes through the supporting plate, the adjusting screw is provided with two adjusting nuts located on the upper and lower sides of the supporting plate respectively, the bottom of the upper rail sits on the supporting plate, one end of the pressure plate is fixed to the upper surface of the supporting plate with a locking bolt, and the other end is used to press the upper rail.

[0012] Furthermore, a telescopic electromagnet is provided on the outer side of the vertical lifting platform, and the telescopic electromagnet is used to adsorb the inner wall of the wheel chamber.

[0013] Furthermore, the vertical lifting platform is a scissors-type lifting platform or a rail-type lifting platform.

[0014] Furthermore, the horizontal linear motion system is a synchronous belt type linear module or a lead screw type linear module or a gear rack linear module driven by a motor.

[0015] Furthermore, a locking component cooperating with the annular track is provided at the bottom of the RGV trolley.

[0016] The beneficial effects brought about by the technical solution provided by the embodiments of the present invention are: an automatic on-site grinding device for a turbine of the present invention realizes the circumferential motion of a grinding robot through an RGV trolley and a circular track, realizes the vertical lifting motion of the grinding robot through a vertical lifting platform, and realizes the horizontal linear motion of the grinding robot through a horizontal linear motion system. The grinding robot can be sent to any position where the inner wall of the impeller chamber or the blades of the impeller body need to be polished, thereby realizing an automatic grinding function and having the advantages of good rigidity, convenient operation, high grinding accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an on-site automatic grinding device for a water turbine according to the present invention;

[0018] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0019] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0020] Figure 4 yes Figure 2 An enlarged schematic diagram of the leveling locking component 12.

[0021] In the figure: 101-wheel chamber, 102-wheel body, 103-rack, 1-mounting flange, 2-track support frame, 3-annular track, 4-servo electric cylinder, 5-RGV trolley, 6-vertical lifting platform, 7-telescopic electromagnet, 8-horizontal linear motion system, 9-polishing robot, 10-upper track, 11-lower support beam, 12-leveling locking component, 13-fixed plate, 14-adjusting screw, 15-support plate, 16-adjusting nut, 17-pressure plate, 18-locking bolt. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] Please refer to Figure 1 An embodiment of the present invention provides an on-site automatic grinding device for a water turbine, wherein the water turbine includes a runner chamber 101 and a runner body 102 arranged in the runner chamber 101, and the grinding device includes: a circular track trolley system, a vertical lifting system, a horizontal linear motion system 8 and a grinding robot 9.

[0024] Specifically, the circular track trolley system includes a circular track 3 and an RGV trolley 5 arranged on the circular track 3. The circular track 3 is arranged around the rotor body 102 and is located between the rotor chamber 101 and the rotor body 102. The RGV trolley 5 can move circumferentially along the circular track 3, that is, the RGV trolley 5 can move circumferentially along the circular track 3 around the rotor body 102.

[0025] Please refer to Figure 2 The annular track 3 is a polygon with rounded corners at the top corners, and each side of the annular track 3 includes a plurality of linear track segments connected in sequence. The length and number of the linear track segments can be changed to adjust the shape of the annular track 3 to meet the grinding requirements of turbines of different sizes.

[0026] Please refer to Figure 4In this embodiment, the annular track 3 includes an upper track 10 and a lower support beam 11 which are arranged opposite to each other in the upper and lower parts, and the upper track 10 and the lower support beam 11 are connected by a plurality of vertically arranged leveling locking components 12. Specifically, the leveling locking components 12 include a fixing plate 13, a support plate 15 and a pressing plate 17, the fixing plate 13 is fixed to the lower support beam 11 at the lower part, the support plate 15 is arranged above the fixing plate 13 and an adjusting screw 14 is arranged between the two, the lower end of the adjusting screw 14 is fixed to the fixing plate 13 and the upper end passes through the support plate 15, and the adjusting screw 14 is provided with two adjusting nuts 16 which are respectively located at the upper and lower sides of the support plate 15, and the two adjusting nuts 16 clamp and fix the support plate 15. The bottom of the upper rail 10 is seated on the support plate 15, one end of the pressing plate 17 is fixedly connected to the upper surface of the support plate 15 by a locking bolt 18, and the other end is used to press the upper rail 10, so that the upper rail 10 is pressed and fixed on the support plate 15 by the pressing plate 17. By adjusting the position of the adjusting nut 16 located below the support plate 15 on the adjusting screw 14, the height of the support plate 15 is adjusted, and then the upper rail 10 is leveled.

[0027] The lower part of the lower support beam 11 is fixed on the track support frame 2. The track support frame 2 is provided with a mounting flange 1 and a servo electric cylinder 4 below. The mounting flange 1 is fixed on the inner wall of the runner chamber 101. The upper end of the mounting flange 1 is connected to the outer end of the track support frame 2. The upper end of the servo electric cylinder 4 is connected to the inner end of the track support frame 2. The mounting flange 1 is fixed to the bottom of the inner wall of the runner chamber 101 by welding. The mounting flange 1 is a component that bears the main load of the grinding device, which solves the problem of limited bearing capacity of the bottom frame 103 of the turbine. The servo electric cylinder 4 can improve the rigidity of the annular track 3.

[0028] The bottom of the RGV trolley 5 is arranged on the upper track 10 and can move along the upper track 10. The bottom of the RGV trolley 5 is provided with a locking component that cooperates with the annular track 3. The function of the locking component is to fix the position of the RGV trolley 5 and prevent the RGV trolley 5 from overturning, so as to ensure the safety and reliability of the grinding operation.

[0029] Please refer to Figure 3 The vertical lifting system is arranged on the RGV trolley 5. The vertical lifting system is a vertical lifting platform 6. The vertical lifting platform 6 is fixedly connected to the RGV trolley 5 and can move circumferentially around the rotating wheel body 102 together with the RGV trolley 5.

[0030] The function of the vertical lifting platform 6 is to realize the lifting function in the vertical direction. A variety of lifting platforms can be selected. In order to ensure the grinding accuracy, the vertical lifting platform 6 should have high rigidity. Generally, a scissor-type lifting platform or a guide rail lifting platform can be selected. In addition, in this embodiment, a telescopic electromagnet 7 is provided on the outer side of the vertical lifting platform 6. The telescopic electromagnet 7 is used to adsorb the inner wall of the runner chamber 101. The rigidity of the vertical lifting platform 6 is improved by the adsorption effect of the telescopic electromagnet 7 on the inner wall of the runner chamber 101.

[0031] The horizontal linear motion system 8 is arranged on the upper part of the vertical lifting platform 6, and the horizontal linear motion system 8 is fixed on the vertical lifting platform 6. The function of the horizontal linear motion system 8 is to realize horizontal linear motion, that is, to realize the linear motion between the wheel body 102 and the inner wall of the wheel chamber 101, and there can be many forms. Here, the horizontal linear motion system 8 can select a synchronous belt linear module or a screw linear module or a gear rack linear module driven by a motor.

[0032] The grinding robot 9 is arranged on the horizontal linear motion system 8, and realizes the horizontal linear motion function along the rotor body 102 and the inner wall of the rotor chamber 101 through the horizontal linear motion system 8 installed on the vertical lifting platform 6, so that the grinding robot 9 can be transported to the side of the rotor body 102 or the inner wall side of the rotor chamber 101.

[0033] Please refer to Figure 1 , 2 and 3. The above-mentioned turbine on-site automatic grinding device realizes the circumferential movement of the grinding robot 9 through the RGV trolley 5 and the circular track 3, realizes the vertical lifting movement of the grinding robot 9 through the vertical lifting platform 6, and realizes the horizontal linear movement of the grinding robot 9 through the horizontal linear motion system 8. The grinding robot 9 can be sent to the inner wall of the impeller chamber 101 or any position of the blades of the impeller body 102 that needs to be polished, so as to realize automatic grinding of the grinding area.

[0034] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0035] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An on-site automatic grinding device for a water turbine, the water turbine comprising a runner chamber and a runner body arranged in the runner chamber, characterized in that: The grinding device comprises: A circular track trolley system, the circular track trolley system comprising a circular track and an RGV trolley arranged on the circular track, the circular track is arranged around the rotor body and is located between the rotor chamber and the rotor body, and the RGV trolley can move circumferentially along the circular track; A vertical lifting system provided on the RGV trolley, wherein the vertical lifting system is a vertical lifting platform; A horizontal linear motion system disposed on the upper portion of the vertical lifting platform; A grinding robot is arranged on the horizontal linear motion system, the vertical lifting platform is used to drive the horizontal linear motion system to rise and fall, and the horizontal linear motion system is used to drive the grinding robot to move horizontally, so that the grinding robot moves to the inner wall of the wheel chamber or the blade of the wheel body to be polished; The annular track is a polygon with rounded corners at the top corners, and each side of the annular track includes a plurality of linear track segments connected in sequence; The annular track includes an upper track and a lower support beam which are arranged opposite to each other up and down, and the upper track and the lower support beam are connected by a plurality of leveling and locking components, and the lower support beam is fixed at the lower part on the track support frame, and a mounting flange and a servo electric cylinder are provided below the track support frame, and the mounting flange is fixed on the inner wall of the wheel chamber, and the upper end of the mounting flange is connected to the outer end of the track support frame, and the upper end of the servo electric cylinder is connected to the inner end of the track support frame.

2. The on-site automatic grinding device for a water turbine according to claim 1, characterized in that: The leveling locking component includes a fixing plate, a supporting plate and a pressing plate, the lower part of the fixing plate is fixed on the lower supporting beam, the supporting plate is arranged above the fixing plate and an adjusting screw is arranged between the two, the lower end of the adjusting screw is fixed to the fixing plate and the upper end passes through the supporting plate, the adjusting screw is provided with two adjusting nuts located at the upper and lower sides of the supporting plate respectively, the bottom of the upper track sits on the supporting plate, one end of the pressing plate is fixed to the upper surface of the supporting plate with a locking bolt, and the other end is used to press the upper track.

3. The on-site automatic grinding device for a water turbine according to claim 1, characterized in that: A telescopic electromagnet is provided on the outer side of the vertical lifting platform, and the telescopic electromagnet is used to adsorb the inner wall of the runner chamber.

4. The on-site automatic grinding device for a water turbine according to claim 1, characterized in that: The vertical lifting platform is a scissor-type lifting platform or a guide rail lifting platform.

5. The on-site automatic grinding device for a water turbine according to claim 1, characterized in that: The horizontal linear motion system is a synchronous belt type linear module or a screw type linear module or a gear rack linear module driven by a motor.

6. The on-site automatic grinding device for a water turbine according to claim 1, characterized in that: A locking component cooperating with the annular track is provided at the bottom of the RGV trolley.

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