Hydroelectric generator set runner chamber concrete removal execution front end and method of using the same

Abstract

The water turbine generator set runner room concrete removal execution front end and its using method, it includes variable diameter module, rotation module, angle adjustment module, horizontal movement module, left and right swing module, up and down swing module, rotation module lower end is installed in variable diameter module's movable end, rotation module's upper end and angle adjustment module installation connection, horizontal movement module is installed in angle adjustment module's upper side, left and right swing module is installed horizontal movement module, up and down swing module is installed in left and right swing module, high pressure spray gun is installed in up and down swing module.The structure degree of freedom is high, can carry out radial, axial and other multi-angle removal to runner room concrete, high pressure spray gun is under the action of left and right swing module and up and down swing module simultaneously, high pressure water single removal effect surface is more wide, removal is more sufficient, construction efficiency is high, reduces the emergence of concrete overbreak and underbreak phenomenon, will not cause the damage of concrete removal interface area.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-end equipment for large-scale water turbine generator unit reconstruction construction, and mainly relates to a water turbine generator unit runner chamber concrete removal front end and a use method thereof, and is suitable for the removal construction of a water turbine generator unit runner chamber concrete. BACKGROUND

[0002] During the reconstruction of a 170MW unit of a certain large-scale hydropower station, the original runner chamber second-phase concrete needs to be removed, the minimum size of the inner diameter of the runner chamber shell is 11.00 meters, the maximum outer diameter to be reached during the removal is 13.5 meters, and the maximum diameter of the top individual position reaches 14.6 meters. The height range of the broken area is 6.16 meters, and the bottom elevation is 32.8 meters. At present, the removal construction methods commonly used in the industry mainly include manual mechanical methods, such as the use of pneumatic picks, rock drills, hydraulic splitting machines and other mechanical equipment. However, this method has low efficiency, high risk of open-air operation, high dust and noise, and occupational health risks. In the face of large-size runner chamber concrete removal, this method requires a large amount of manpower and a long construction period, and is difficult to meet the on-site construction needs of large-scale water turbine unit reconstruction.

[0003] In view of the problems of manual removal operation, in April 2021, the article “Design and Construction Technology Research of High-Pressure Water Jet Breaking Runner Chamber Special Machinery” was published in “Construction Technology” by China Railway Engineering Equipment Co., Ltd. The article designs a high-pressure water jet breaking special machinery for runner chamber concrete breaking operation, which breaks the runner chamber concrete by combining the structure of the runner chamber with high-pressure water jet. The high-pressure water jet breaking special machinery includes a bearing platform, a breaking robot, a lifting and hoisting device and auxiliary equipment, etc. The bearing platform is connected to the upper flange surface of the seat ring above the fixed guide vane, and the overall weight of the bearing equipment. The middle support connecting column of the bearing platform is connected to the lifting platform below, and the high-pressure water jet breaking robot works on the lifting platform. The lifting and hoisting device is placed on the bearing platform to lift the lifting platform and hoist the soil. Other auxiliary equipment includes a high-pressure water jet generating device, a ventilation device, etc. and is also placed on the bearing platform. However, during the specific use of this special machinery, the following problems exist: the high-pressure jet breaking robot has insufficient degrees of freedom, and can only remove the runner chamber concrete in the radial direction, and cannot perform axial removal operation. In addition, the angle of the radial removal operation is limited. The runner chamber concrete not only has a large thickness, but also has very high strength. The radially cut concrete and the base are still in an integral structure, and need to be removed one by one with the help of pneumatic picks and other tools. Not only is the construction efficiency low, but more seriously, the concrete removal interface area (non-removed part) is prone to damage. SUMMARY

[0004] The technical problem to be solved by the present application is to solve the problems in the background art, and to provide a water turbine generator set runner chamber concrete removal front end, which can remove the runner chamber concrete in the radial and axial directions, has high construction efficiency, and will not cause damage to the concrete removal interface area.

[0005] Another technical problem to be solved by the present application is to provide a use method of the water turbine generator set runner chamber concrete removal front end.

[0006] The water turbine generator set runner chamber concrete removal front end comprises a variable-diameter module, a rotating module, an angle adjustment module, a horizontal movement module, a left-right swing module, an up-down swing module and a high-pressure spray gun, the lower end of the rotating module is installed at the movable end of the variable-diameter module, the upper end of the rotating module is connected with the angle adjustment module, the horizontal movement module is installed on the upper side of the angle adjustment module, the left-right swing module is installed on the horizontal movement module, the up-down swing module is installed on the left-right swing module, and the high-pressure spray gun is installed on the up-down swing module.

[0007] The variable-diameter module comprises a center support, a first sliding plate, a second sliding plate and a first driving device, both sides of the center support are respectively provided with sliding grooves, the first sliding plate and the second sliding plate are respectively connected with the sliding grooves on both sides in a sliding manner, the bottom of the center support is provided with the first driving device, the output shaft of the first driving device extends into the center support, the output shaft of the first driving device is provided with a gear inside the center support, the first sliding plate and the second sliding plate are respectively provided with a gear rack on the side of the gear, and the gear rack is in meshing transmission with the gear.

[0008] The sliding groove is composed of two groove-shaped parts, and the grooves of the two groove-shaped parts are oppositely installed on the side surface of the center support.

[0009] The rotating module comprises a support seat and a rotating seat, the lower end of the support seat is fixedly installed with the second sliding plate of the variable-diameter module, the upper end of the support seat is provided with the rotating seat, the rotating seat comprises a shell, the lower side of the shell is fixedly installed with the support seat, a turbine is rotationally and limitingly installed in the shell, a worm is rotationally installed on one side of the shell, the worm is in meshing transmission with the turbine, a second driving device is installed on the shell and connected with the worm in transmission, and the angle adjustment module is installed on the upper side of the turbine.

[0010] The angle adjusting module comprises a bottom plate and a rotating mechanism installed on the bottom plate, the rotating mechanism comprises fixed supports installed on both sides of the bottom plate, swing arms are installed on the fixed supports on both sides through support pin shafts, the swing arm comprises a support sleeve, first supporting arms are respectively arranged at both ends of the support sleeve, a second supporting arm is arranged at the middle of the support sleeve, an included angle is formed between the first supporting arms and the second supporting arm, the first supporting arms are connected with the horizontal moving module, the second supporting arm is connected with a third driving device, the third driving device is a hydraulic oil cylinder, a support is installed on the side of the bottom plate away from the swing arm, the cylinder body of the third driving device is hinged to the support, and the piston rod is hinged to the second supporting arm.

[0011] The horizontal moving module is connected with the first supporting arm through a quick mounting plate, the quick mounting plate is fixedly connected with the horizontal moving module, a hook groove is arranged on the lower side of the quick mounting plate, a first pin hole is arranged on the side of the quick mounting plate away from the hook groove, a second pin hole corresponding to the first pin hole and a first pin shaft matched with the hook groove are arranged on the first supporting arm, the hook groove of the quick mounting plate hooks the first pin shaft on the first supporting arm, and the first pin hole and the second pin hole are connected through a quick release pin shaft.

[0012] The horizontal moving module comprises square guide rails and a sliding seat, fixed racks are installed on the square guide rails, the sliding seat comprises a sliding plate, pulleys and a fourth driving device, four pulleys are rotatably installed at the bottom of the sliding plate and are distributed on both sides of the square guide rails, the fourth driving device is installed on the sliding plate, a gear is installed on the output shaft of the fourth driving device, the gear is in meshing transmission with the fixed rack, and the pulleys are V-shaped wheels matched with the square guide rails.

[0013] The left-right swinging module comprises a sliding block and a telescopic plate, the lower side of the sliding block is rotatably connected with the sliding plate of the horizontal moving module, the telescopic plate is guidingly and slidingly installed in the sliding block, one end of the telescopic plate is hingedly connected with one end of a connecting rod, the connecting rod is located below the telescopic plate, the lower side of the sliding plate is provided with a fifth driving device, the output shaft of the fifth driving device extends upwards out of the sliding plate and is fixedly connected with the other end of the connecting rod, and the other end of the telescopic plate is provided with the up-down swinging module on the upper side.

[0014] The up-down swinging module comprises a hinge support, the hinge support is fixedly connected with the telescopic plate of the left-right swinging module on the lower side, a swinging seat is rotatably installed on the inner side of the hinge support, the high-pressure spray gun is fixedly connected with the swinging seat, a sixth driving device is installed on the inner side of the hinge support, the output shaft of the sixth driving device extends out of the hinge support, an eccentric shaft is installed on the output shaft of the sixth driving device, the swinging seat is located on one side of the eccentric shaft extending out of the hinge support, one end of the swinging seat extending out of the hinge support is fixedly connected with one end of a swinging plate, the other end of the swinging plate is provided with a waist round hole, and the waist round hole is sleeved on the eccentric shaft.

[0015] The method for using the water turbine generator set runner chamber concrete removal execution front end comprises the following steps:

[0016] Step 1: Assemble and weld the lower annular track at the appropriate position of the draft tube cone section on the lower side of the runner chamber, and assemble and weld the upper annular track at the fixed guide vane on the upper side of the runner chamber of the hydro-generator unit. The lifting tower is slidably installed at the two ends of the upper annular track and the lower annular track, and the lifting tower rotates around the upper annular track and the lower annular track. The lifting module is installed on the lifting tower.

[0017] Step 2: Install the variable-diameter module, the rotating module, the angle adjustment module, the horizontal movement module, the left-right swing module, the up-down swing module, and the high-pressure spray gun in sequence. The first sliding plate of the variable-diameter module is fixedly installed with the lifting module. The support seat of the rotating module is fixedly installed with the second sliding plate of the variable-diameter module. The bottom plate of the angle adjustment module is installed on the turbine of the rotating module. The angle adjustment module is connected with the square guide rail of the horizontal movement module through the quick mounting plate. The left-right swing module is installed on the sliding plate of the horizontal movement module. The up-down swing module is installed on the telescopic plate of the left-right swing module. The high-pressure spray gun is fixedly installed on the swing seat of the up-down swing module.

[0018] Step 3: The first driving device, the second driving device, the third driving device, the fourth driving device, the fifth driving device, and the sixth driving device are respectively connected with the hydraulic valve group of the hydraulic station through the hydraulic oil pipe. The hydraulic station controls each driving device individually. The interface end of the high-pressure spray gun is connected with the high-pressure water pump station through the high-pressure water hose. The hydraulic station and the high-pressure water pump station are electrically connected with the power supply. The first driving device is a turbine worm reducer. The first driving device is driven by the first hydraulic motor. The second driving device, the fourth driving device, the fifth driving device, and the sixth driving device are all hydraulic motors. The third driving device is a hydraulic oil cylinder.

[0019] Step 4: The lifting tower is controlled to run by the hydraulic station. The lifting tower rotates to the axis of the position where the runner chamber needs to be removed. At the same time, the lifting module runs on the lifting tower. The high-pressure spray gun is adjusted to the appropriate height of the concrete to be removed. Then the hydraulic station controls the first driving device or the fourth driving device to act, adjusts the target distance between the high-pressure spray gun and the concrete to be removed, and controls the second driving device or the third driving device to act, adjusts the horizontal angle and the vertical angle between the high-pressure spray gun and the concrete to be removed.

[0020] Step 5: The left-right limit and movement speed of the horizontal movement module are set by the hydraulic station to control the removal range and walking speed of the high-pressure spray gun. The high-pressure water pump station is started. The high-pressure water is delivered to the high-pressure spray gun through the high-pressure water hose. The high-pressure spray gun can spray high-pressure water to remove the concrete to be removed according to the preset path. The sixth driving device drives the high-pressure spray gun to swing up and down when it works.

[0021] Step 6: When the inner circumferential surface of the horizontal area is demolished, the piston rod of the third driving device is extended to make the high-pressure spray gun rotate downward by 90°, or the second driving device drives the rotating module to rotate leftward by 90°, so that the upper side or the right side of the concrete to be demolished is cut and demolished;

[0022] Step 7: After the concrete around the to-be-demolished concrete is demolished, the high-pressure spray gun is moved upward or downward to the next demolition horizontal area through the setting of the lifting module, and steps 4-5 are repeated, so that the high-pressure spray gun continuously works in the specified area.

[0023] The present application has the following beneficial effects:

[0024] The variable-diameter module can drive the rotating module to perform radial telescopic motion, the rotating module can drive the angle adjustment module to rotate by 90° in the ring direction, the angle adjustment module can drive the horizontal movement module to swing up and down by 90°, the horizontal movement module can drive the left-right swing module to move horizontally left and right, the left-right swing module can drive the up-down swing module to swing left and right reciprocally, and the up-down swing module can drive the high-pressure spray gun to swing up and down reciprocally. Through the above structure, the structure has high degree of freedom, can demolish the concrete in the runner chamber in the radial direction, the axial direction and other multiple angles, and under the action of the left-right swing module and the up-down swing module, the high-pressure spray gun has a wider single demolition surface, the demolition is more sufficient, the construction efficiency is high, the demolition interface area will not form a concrete crack under the high-pressure water demolition process, and by reasonably adjusting the working direction and the angle, the demolition interface can be more accurately controlled, the occurrence of concrete overbreak and underbreak is reduced, and the concrete demolition interface area will not be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in combination with the drawings and embodiments.

[0026] Figure 1 It is a structural schematic diagram of the present application in use state;

[0027] Figure 2 It is a structural schematic diagram of the present application in use state;

[0028] Figure 3 It is a structural schematic diagram of the present application in use state;

[0029] Figure 4 It is a structural schematic diagram of the present application in use state;

[0030] Figure 5 It is a structural schematic diagram of the present application in use state;

[0031] Figure 6 It is a structural schematic diagram of the present application in use state;

[0032] Figure 7Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0033] Fig. 1 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0034] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0035] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0036] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0037] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0038] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0039] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application;

[0040] Fig. 2 is a schematic view of the three-dimensional structure of the up-and-down swinging module of the present application; DETAILED DESCRIPTION

[0041] The embodiments of the present application will be further described below with reference to the drawings.

[0042] Embodiment 1

[0043] Reference Signs List Figures 1-7The front end for removing the runner chamber concrete of a hydro-generator unit comprises a variable-diameter module 100, a rotating module 200, an angle adjusting module 300, a horizontal moving module 400, a left-right swinging module 500, an up-down swinging module 600 and a high-pressure spray gun 700. The lower end of the rotating module 200 is installed at the movable end of the variable-diameter module 100, the upper end of the rotating module 200 is connected with the angle adjusting module 300, the horizontal moving module 400 is installed at the upper side of the angle adjusting module 300, the left-right swinging module 500 is installed on the horizontal moving module 400, the up-down swinging module 600 is installed on the left-right swinging module 500, and the high-pressure spray gun 700 is installed on the up-down swinging module 600. The variable-diameter module 100 can drive the rotating module 200 to move radially, the rotating module 200 can drive the angle adjusting module 300 to rotate circumferentially, the angle adjusting module 300 can drive the horizontal moving module 400 to swing up and down by 90°, the horizontal moving module 400 can drive the left-right swinging module 500 to move horizontally, the left-right swinging module 500 can drive the up-down swinging module 600 to swing left and right reciprocally, and the up-down swinging module 600 can drive the high-pressure spray gun 700 to swing up and down reciprocally. Through the above structure, the degree of freedom is high, the runner chamber concrete can be removed radially and axially, the construction efficiency is high, the interface area will not form concrete cracks under the high-pressure water removal process, and the removal interface can be controlled accurately by reasonably adjusting the operation direction and angle, the concrete overbreak and underbreak phenomenon can be reduced, and the damage to the concrete removal interface area can be avoided.

[0044] Referring to Figure 1 , 2 The variable-diameter module 100 comprises a center support 110, a first sliding plate 130, a second sliding plate 140 and a first driving device 150. The center support 110 is provided with sliding grooves 120 on both sides, the first sliding plate 130 and the second sliding plate 140 are slidably connected with the sliding grooves 120 on both sides respectively, the first driving device 150 is installed at the bottom of the center support 110, the output shaft of the first driving device 150 extends into the center support 110, a gear 151 is installed on the output shaft of the first driving device 150 in the center support 110, the first sliding plate 130 and the second sliding plate 140 are respectively provided with racks on the side of the gear 151, and the racks are in meshing transmission with the gear 151. When the first driving device 150 is started, the gear 151 is driven to rotate, thereby driving the first sliding plate 130 and the second sliding plate 140 on both sides of the center support 110 to slide in opposite directions. Since the first sliding plate 130 is fixed during use, the second sliding plate 140 has a longer distance for telescopic adjustment, and the rotating module 200 is installed at the front end of the second sliding plate 140. Preferably, the first driving device 150 is a worm gear reducer, which is driven by a first hydraulic motor 152.

[0045] Participate Figure 2The chute 120 is composed of two groove-shaped members 121, and the grooves of the two groove-shaped members 121 are oppositely arranged on the sides of the central support 110 and are fixed by bolts. The split structure of the chute is convenient for manufacturing and adjusting. Of course, the groove-shaped members 121 can also be an integral structure with the central support 110.

[0046] Referring to Figure 2 The rotating module 200 comprises a support base 210 and a rotating base 220. The lower end of the support base 210 is fixedly connected with the second sliding plate 140 of the variable-diameter module 100, and the upper end of the support base 210 is provided with the rotating base 220. The rotating base 220 comprises a housing, the lower side of the housing is fixedly connected with the support base 210, a turbine is rotationally and limitingly arranged in the housing, a worm is rotationally arranged on one side of the housing, the worm is in meshing transmission with the turbine, a second driving device 230 is arranged on the housing and is connected with the worm in transmission, and an angle adjusting module 300 is arranged on the upper side of the turbine. The worm is driven to rotate by the second driving device 230, so that the turbine is driven to rotate, and the angle adjusting module 300 can rotate by 360°. However, in actual use, the angle adjusting module 300 can rotate within 90° due to the interference of the pipeline, the lifting tower 3 and the lifting module 4. As shown in Figure 2 At this time, the high-pressure spray gun 700 can perform front removal on the concrete of the rotating wheel chamber. When the angle adjusting module 300 is driven to rotate to the left by the rotating module 200, the right side of the concrete can be cut. Preferably, the second driving device 230 is a hydraulic motor.

[0047] Referring to Figure 4 The angle adjusting module 300 comprises a bottom plate 301 and a rotating mechanism arranged on the bottom plate 301. The rotating mechanism comprises fixed supports 302 arranged on both sides of the bottom plate 301, swing arms 310 arranged on the fixed supports 302 on both sides through support pin shafts 303, the swing arms 310 comprising support sleeves 311, first branch arms 312 arranged at both ends of the support sleeves 311 respectively, second branch arms 313 arranged at the middle portions of the support sleeves 311, and an included angle formed between the first branch arms 312 and the second branch arms 313. The first branch arms 312 are connected with the horizontal moving module 400, the second branch arms 313 are connected with a third driving device 320, and the third driving device 320 is a hydraulic oil cylinder. A support 330 is arranged on the side of the bottom plate 301 away from the swing arms 310, the cylinder body of the third driving device 320 is hingedly connected with the support 330, and the piston rod is hingedly connected with the second branch arms 313. When the piston rod of the third driving device 320 is retracted, the high-pressure spray gun 700 is in a horizontal state. When the piston rod of the third driving device 320 is extended, the high-pressure spray gun 700 is in a vertical state, so that the upper side of the concrete can be removed.

[0048] Referring to Figure 4 , 5, 6, the cross-moving module 400 is connected with the first supporting arm 312 through the quick mounting plate 314, the quick mounting plate 314 is connected and fixed with the cross-moving module 400, the lower side of the quick mounting plate 314 is provided with the hook groove 316, the side of the quick mounting plate 314 away from the hook groove 316 is provided with the first pin hole 315, the first supporting arm 312 is provided with the second pin hole corresponding to the first pin hole 315 and the first pin shaft 318 matched with the hook groove 316, the hook groove 316 of the quick mounting plate 314 hooks the first pin shaft 318 on the first supporting arm 312, and the first pin hole 315 is connected with the second pin hole through the quick release pin shaft 317. Through the above structure, the end of the cross-moving module 400 can be conveniently disassembled and maintained. When in use, the hook groove 316 of the quick mounting plate 314 hooks the first pin shaft 318 on the first supporting arm 312, and then the first pin hole 315 is aligned with the second pin hole, and the quick release pin shaft 317 is inserted and fixed.

[0049] Referring to Figure 5 , the cross-moving module 400 comprises square guide rails 410 and a sliding base 420, the square guide rails 410 are provided with fixed racks 411, the sliding base 420 comprises a sliding plate 421, pulleys 430 and a fourth driving device 440, the four pulleys 430 are rotatably installed at the bottom of the sliding plate 421 and are distributed on both sides of the square guide rails 410, the fourth driving device 440 is installed on the sliding plate 421, the output shaft of the fourth driving device 440 is provided with a gear, and the gear is in meshing transmission with the fixed rack 411; the pulley 430 is a V-shaped wheel matched with the square guide rails 410, and the pulleys 430 on both sides clamp the opposite two edges of the square guide rails 410. Through the above structure, the sliding base 420 can slide back and forth on the square guide rails 410 through the fourth driving device 440, thereby increasing the working range of the high-pressure spray gun 700. The square guide rails 410 and the V-shaped wheels are matched, and the structure is stable and reliable. The fourth driving device 440 is preferably a hydraulic motor.

[0050] Referring to Figure 6The left and right swing module 500 comprises a sliding block 511 and a telescopic plate 512, the lower side of the sliding block 511 is rotationally connected with the sliding plate 421 of the horizontal movement module 400, specifically, the lower side of the sliding plate 421 is provided with a rotating shaft seat 520, the lower end of the sliding block 511 is provided with a protruding shaft, the protruding shaft passes through the bearing in the rotating shaft seat 520, the telescopic plate 512 is guidingly and slidingly installed in the sliding block 511, and the sliding block 511 is a swallow-tail sliding groove structure. One end of the telescopic plate 512 is hingedly connected with one end of a connecting rod 540, the connecting rod 540 is located below the telescopic plate 512, the lower side of the sliding plate 421 is provided with a fifth driving device 530, the output shaft of the fifth driving device 530 protrudes upwards out of the sliding plate 421 and is fixedly connected with the other end of the connecting rod 540, and the other end of the telescopic plate 512 is provided with the up and down swing module 600 on the upper side. When the fifth driving device 530 is reversely and reciprocatingly rotated, the connecting rod 540 is rotated, the connecting rod 540 drives the telescopic plate 512 to swing left and right, thereby driving the high-pressure spray gun 700 to swing left and right, and of course, the high-pressure spray gun 700 can also be used for adjusting the horizontal angle. The fifth driving device 530 is preferably a hydraulic motor.

[0051] Referring to Figure 7 The up and down swing module 600 comprises a hinge seat 610, the hinge seat 610 is fixedly installed with the telescopic plate 512 of the left and right swing module 500 on the lower side, a swing seat 630 is rotationally installed on the inner side below the hinge seat 610, the high-pressure spray gun 700 is fixedly installed with the swing seat 630, a sixth driving device 620 is installed on the inner side above the hinge seat 610, the output shaft of the sixth driving device 620 protrudes out of the hinge seat 610, an eccentric shaft 621 is installed on the output shaft of the sixth driving device 620, the swing seat 630 is located on one side of the eccentric shaft 621 and protrudes out of the hinge seat 610, one end of the swing seat 630 protruding out of the hinge seat 610 is fixedly connected with one end of a swing plate 640, the other end of the swing plate 640 is provided with a waist round hole 641, and the waist round hole 641 is sleeved on the eccentric shaft 621. When the sixth driving device 620 is rotated, the eccentric shaft 621 is driven to rotate eccentrically, thereby repeatedly driving the swing plate 640, the swing plate 640 drives the swing seat 630 to reciprocatingly rotate, thereby driving the high-pressure spray gun 700 to swing up and down. The sixth driving device 620 is preferably a hydraulic motor.

[0052] In use, in order to better control the rotation of each driving, an encoder is installed on the rotating part of each driving, so that the motion range of each module can be calculated and controlled. The encoders are connected with a control system through an electric control cable 802. In the embodiment, the control system and the hydraulic station are in an integrated structure.

[0053] Embodiment two:

[0054] The method for using the front end for concrete removal of a runner chamber of a hydroelectric generator unit comprises the following steps:

[0055] Step 1: Assemble and weld the lower annular track 1 at the appropriate position of the draft tube cone section on the lower side of the runner chamber, assemble and weld the upper annular track 2 at the fixed guide vane on the upper side of the runner chamber of the hydro-generator unit, and slide the lifting tower 3 at both ends on the upper annular track 2 and the lower annular track 1, respectively, and rotate the lifting tower 3 through the upper annular track 2 and the lower annular track 1, and install the lifting module 4 on the lifting tower 3.

[0056] Step 2: Install the variable-diameter module 100, the rotating module 200, the angle adjustment module 300, the horizontal movement module 400, the left-right swing module 500, the up-down swing module 600, and the high-pressure spray gun 700 in sequence, wherein the first sliding plate 130 of the variable-diameter module 100 is fixedly installed with the lifting module 4, the support seat 210 of the rotating module 200 is fixedly installed with the second sliding plate 140 of the variable-diameter module, the bottom plate 301 of the angle adjustment module 300 is installed on the turbine of the rotating module 200, the angle adjustment module 300 is connected and installed with the square guide rail 410 of the horizontal movement module 400 through the quick-mounting plate 314, the left-right swing module 500 is installed on the sliding plate 421 of the horizontal movement module 400, the up-down swing module 600 is installed on the telescopic plate 512 of the left-right swing module 500, and the high-pressure spray gun 700 is fixedly installed on the swing seat 630 of the up-down swing module 600.

[0057] Step 3: Connect the first driving device 150, the second driving device 230, the third driving device 320, the fourth driving device 440, the fifth driving device 530, and the sixth driving device 620 to the hydraulic valve group of the hydraulic station 800 through the hydraulic oil pipe 801, respectively, and control each driving device separately by the hydraulic station 800, connect the interface end 701 of the high-pressure spray gun 700 to the high-pressure water pump station 900 through the high-pressure water hose 901, and electrically connect the hydraulic station 800 and the high-pressure water pump station 900 to the power supply; wherein the first driving device 150 is a turbine worm reducer, the first driving device 150 is driven by the first hydraulic motor 152, the second driving device 230, the fourth driving device 440, the fifth driving device 530, and the sixth driving device 620 are all hydraulic motors, and the third driving device 320 is a hydraulic oil cylinder.

[0058] Step 4: Control the lifting tower 3 to run by the hydraulic station 800, rotate the lifting tower 3 to the axis of the runner chamber at the position to be removed, and at the same time, control the lifting module 4 to run on the lifting tower 3, adjust the high-pressure spray gun 700 to the appropriate height of the concrete to be removed, then control the first driving device 150 or the fourth driving device 440 to act by the hydraulic station 800, adjust the target distance between the high-pressure spray gun 700 and the concrete to be removed, and control the second driving device 230 or the third driving device 320 to act by the hydraulic station 800, adjust the horizontal angle and the vertical angle between the high-pressure spray gun 700 and the concrete to be removed.

[0059] Step 5: Set the variable diameter module 100, left and right limit and movement speed of the transverse module 400 through the hydraulic station 800 to control the removal range and walking speed of the high-pressure spray gun 700, and start the high-pressure water pump station 900. The high-pressure water is delivered to the high-pressure spray gun 700 through the high-pressure water hose 901, and the high-pressure spray gun 700 can spray high-pressure water back and forth to remove the concrete to be removed according to the preset path. The sixth driving device 620 drives the high-pressure spray gun 700 to rotate up and down back and forth during work.

[0060] Step 6: When the inner circumferential surface of the horizontal area is removed, the piston rod of the third driving device 320 is extended to make the high-pressure spray gun 700 rotate 90° downward, or the second driving device 230 drives the rotary module 200 to rotate 90° to the left to cut and remove the upper side or the right side of the concrete to be removed.

[0061] Step 7: After removing the concrete around, set the lifting module 4 to move the high-pressure spray gun 700 upward or downward to the next removal horizontal area, and then repeat steps 4-5 to make the high-pressure spray gun 700 work continuously in the specified area.

Claims

1. A front end for executing the removal of concrete from a runner chamber of a hydroelectric generating unit, characterized in that: It includes variable diameter module (100), rotating module (200), angle adjustment module (300), horizontal movement module (400), left and right swing module (500), up and down swing module (600) and high pressure spray gun (700), the lower end of rotating module (200) is installed in the movable end of variable diameter module (100), the upper end of rotating module (200) is connected with angle adjustment module (300), horizontal movement module (400) is installed on the upper side of angle adjustment module (300), left and right swing module (500) is installed on horizontal movement module (400), up and down swing module (600) is installed on left and right swing module (500), high pressure spray gun (700) is installed on up and down swing module (600), the variable diameter module (100) can drive rotating module (200) to move radially, rotating module (200) can drive angle adjustment module (300) to rotate circularly, angle adjustment module (300) can drive horizontal movement module (400) to swing up and down, horizontal movement module (400) can drive left and right swing module (500) to move horizontally, left and right swing module (500) can drive up and down swing module (600) to swing left and right reciprocating, up and down swing module (600) can drive high pressure spray gun (700) to swing up and down reciprocating, The variable diameter module (100) includes center support (110), first sliding plate (130), second sliding plate (140) and first drive device (150), both sides of the center support (110) are respectively provided with sliding groove (120), the first sliding plate (130) and the second sliding plate (140) are respectively connected with the sliding groove (120) on both sides, the bottom of the center support (110) is provided with the first drive device (150), the output shaft of the first drive device (150) extends into the center support (110), the output shaft of the first drive device (150) is provided with gear (151) in the center support (110), the first sliding plate (130) and the second sliding plate (140) are respectively provided with rack on the side of the gear (151), the rack is engaged with the gear (151) transmission; The rotating module (200) includes support seat (210) and rotating seat (220), the lower end of the support seat (210) is fixedly connected with the second sliding plate (140) of the variable diameter module (100), the upper end of the support seat (210) is provided with the rotating seat (220), the rotating seat (220) includes a shell, the lower side of the shell is fixedly connected with the support seat (210), a turbine is rotatably arranged in the shell, a worm is rotatably arranged on one side of the shell, the worm is engaged with the turbine transmission, a second drive device (230) is arranged on the shell and connected with the worm transmission, the angle adjustment module (300) is arranged on the upper side of the turbine; The angle adjusting module (300) comprises a bottom plate (301) and a rotating mechanism installed on the bottom plate (301), the rotating mechanism comprises fixed supports (302) installed on both sides of the bottom plate (301), a swing arm (310) is installed on the fixed supports (302) on both sides through a supporting pin shaft (303), the swing arm (310) comprises a supporting sleeve (311), the two ends of the supporting sleeve (311) are respectively provided with first supporting arms (312), the middle part of the supporting sleeve (311) is provided with a second supporting arm (313), an included angle is formed between the first supporting arms (312) and the second supporting arm (313), the first supporting arms (312) are in connected with the horizontal moving module (400), the second supporting arm (313) is connected with a third driving device (320), the third driving device (320) is a hydraulic oil cylinder, a support (330) is installed on the side of the bottom plate (301) away from the swing arm (310), the cylinder body of the third driving device (320) is hinged with the support (330), and the piston rod is hinged with the second supporting arm (313); The horizontal moving module (400) comprises square guide rails (410) and sliding seats (420), the square guide rails (410) are provided with fixed racks (411), the sliding seats (420) comprise sliding plates (421), pulleys (430) and a fourth driving device (440), four pulleys (430) are rotatably installed at the bottom of the sliding plate (421) and are distributed on both sides of the square guide rails (410) in pairs, the fourth driving device (440) is installed on the sliding plate (421), the output shaft of the fourth driving device (440) is provided with a gear, and the gear is in meshing transmission with the fixed rack (411); the pulleys (430) are V-shaped wheels matched with the square guide rails (410), and the pulleys (430) on both sides clamp two opposite edges of the square guide rails (410); The left-right swing module (500) comprises sliding blocks (511) and telescopic plates (512), the sliding blocks (511) are rotatably connected with the sliding plate (421) of the horizontal moving module (400) on the lower side, the telescopic plates (512) are guidingly and slidingly installed on the sliding blocks (511), one end of the telescopic plates (512) is hinged with one end of a connecting rod (540), the connecting rod (540) is located below the telescopic plates (512), the lower side of the sliding plate (421) is provided with a fifth driving device (530), the output shaft of the fifth driving device (530) is upwardly extended out of the sliding plate (421) and is fixedly connected with the other end of the connecting rod (540), and the other end of the telescopic plates (512) is provided with the up-down swing module (600) on the upper side; The up-and-down swing module (600) comprises a hinge base (610) which is fixedly installed with the telescopic plate (512) of the left-and-right swing module (500) at the lower side, a swing base (630) which is rotatably installed below the inner side of the hinge base (610), the high-pressure spray gun (700) is fixedly installed with the swing base (630), a sixth driving device (620) which is installed above the inner side of the hinge base (610), the output shaft of the sixth driving device (620) extends out of the hinge base (610), an eccentric shaft (621) is installed on the output shaft of the sixth driving device (620), the swing base (630) extends out of the hinge base (610) at one side of the eccentric shaft (621), one end of the swing base (630) extending out of the hinge base (610) is fixedly connected with one end of a swing plate (640), the other end of the swing plate (640) is provided with a waist round hole (641), and the waist round hole (641) is sleeved outside the eccentric shaft (621).

2. The concrete removal execution front end for a runner chamber of a hydroelectric generator set according to claim 1, wherein: The chute (120) is composed of two groove-shaped pieces (121), and the grooves of the two groove-shaped pieces (121) are oppositely installed on the side surface of the center support (110).

3. The concrete removal execution front end for a runner chamber of a hydroelectric generator set of claim 1, wherein: The transverse moving module (400) is connected with the first supporting arm (312) through a quick mounting plate (314), the quick mounting plate (314) is fixedly connected with the transverse moving module (400), the lower side of the quick mounting plate (314) is provided with a hook groove (316), the side of the quick mounting plate (314) away from the hook groove (316) is provided with a first pin hole (315), the first supporting arm (312) is provided with a second pin hole corresponding to the first pin hole (315) and a first pin shaft (318) matched with the hook groove (316), the hook groove (316) of the quick mounting plate (314) hooks the first pin shaft (318) on the first supporting arm (312), and the first pin hole (315) and the second pin hole are connected through a quick mounting pin shaft (317).

4. The method of using a front end for the removal of concrete from a runner chamber of a hydroelectric generating unit as defined in claim 3, wherein, The method comprises the following steps: Step 1: the lower annular track (1) is assembled and welded at the lower side of the runner chamber and the draft tube cone pipe section, the upper annular track (2) is assembled and welded at the upper side of the runner chamber and the stay vane, the lifting tower (3) is slidably installed at the upper annular track (2) and the lower annular track (1) at two ends, the lifting tower (3) rotates in a circle through the upper annular track (2) and the lower annular track (1), and the lifting module (4) is installed on the lifting tower (3); Step 2: Install the variable diameter module (100), the rotating module (200), the angle adjustment module (300), the horizontal movement module (400), the left-right swing module (500), the up-down swing module (600) and the high-pressure spray gun (700) in sequence, wherein the first sliding plate (130) of the variable diameter module (100) is fixedly installed with the lifting module (4), the support seat (210) of the rotating module (200) is fixedly installed with the second sliding plate (140) of the variable diameter module, the bottom plate (301) of the angle adjustment module (300) is installed on the turbine of the rotating module (200), the angle adjustment module (300) is installed and connected with the square guide rail (410) of the horizontal movement module (400) through the quick mounting plate (314), the left-right swing module (500) is installed on the sliding plate (421) of the horizontal movement module (400), the up-down swing module (600) is installed on the telescopic plate (512) of the left-right swing module (500), and the high-pressure spray gun (700) is fixedly installed on the swing seat (630) of the up-down swing module (600); Step 3: The first driving device (150), the second driving device (230), the third driving device (320), the fourth driving device (440), the fifth driving device (530) and the sixth driving device (620) are respectively connected with the hydraulic valve group of the hydraulic station (800) through the hydraulic oil pipe (801), the hydraulic station (800) controls each driving device individually, the interface end (701) of the high-pressure spray gun (700) is connected with the high-pressure water pump station (900) through the high-pressure water hose (901), and the hydraulic station (800) and the high-pressure water pump station (900) are electrically connected with the power supply; wherein the first driving device (150) is a worm gear reducer, the first driving device (150) is driven by the first hydraulic motor (152), the second driving device (230), the fourth driving device (440), the fifth driving device (530) and the sixth driving device (620) are all hydraulic motors, and the third driving device (320) is a hydraulic oil cylinder; Step 4: Control the lifting tower (3) to run through the hydraulic station (800), rotate the lifting tower (3) to the axis of the runner chamber position to be removed, at the same time, the lifting module (4) runs on the lifting tower (3), adjusts the high-pressure spray gun (700) to the appropriate height of the concrete to be removed, then the hydraulic station (800) controls the first driving device (150) or the fourth driving device (440) to act, adjusts the target distance between the high-pressure spray gun (700) and the concrete to be removed, and the hydraulic station (800) controls the second driving device (230) or the third driving device (320) to act, adjusts the horizontal angle and the vertical angle between the high-pressure spray gun (700) and the concrete to be removed; Step 5: Set the left and right limit and movement speed of the horizontal movement module (400) through the hydraulic station (800) to control the removal range and walking speed of the high-pressure spray gun (700), and start the high-pressure water pump station (900) to deliver high-pressure water to the high-pressure spray gun (700) through the high-pressure water hose (901). The high-pressure spray gun (700) can spray high-pressure water back and forth along the preset path to remove the concrete to be removed; wherein the sixth driving device (620) drives the high-pressure spray gun (700) to swing up and down during work. Step 6: When the inner circumferential surface of the horizontal area is removed, the piston rod of the third driving device (320) is extended to make the high-pressure spray gun (700) rotate 90° downward, or the second driving device (230) drives the rotary module (200) to rotate 90° left to cut and remove the upper side or right side of the concrete to be removed. Step 7: After removing one round of concrete to be removed, move the high-pressure spray gun (700) upward or downward to the next removal horizontal area by setting the lifting module (4), and repeat steps 4-5 to make the high-pressure spray gun (700) work continuously in the designated area.

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