Steam turbine cylinder block casting sealing surface repairing and polishing equipment and repairing method

Abstract

The invention relates to the technical field of polishing equipment, in particular to steam turbine cylinder casting sealing surface repairing and polishing equipment and a repairing method.The steam turbine cylinder casting sealing surface repairing and polishing equipment comprises a fixing base, a mounting frame is slidably connected into the fixing base through a guide column, and a repairing assembly is slidably connected into the mounting frame and comprises a rotating frame, a rotating shaft, a mounting disc, a driven shaft and a grinding roller; the rotating frame is slidably connected into the mounting frame through the guide rod, the rotating shaft is rotatably connected into the rotating frame, the mounting disc is mounted on the circumferential face of the rotating shaft, the driven shafts are rotatably connected into the mounting disc, the grinding rollers are mounted on the circumferential faces of the driven shafts, a servo motor is mounted at the upper end of the rotating frame, and a connecting shaft is mounted at the output end of the servo motor. According to the device, under the action of the repairing assembly, the grinding rollers are sequentially switched, the repairing position of the cylinder body is repaired from grinding to polishing, meanwhile, grinding paste or polishing paste is automatically extruded out, and the repairing effect on the sealing face of the cylinder body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of polishing equipment, and more particularly to a steam turbine cylinder casting sealing surface repair polishing equipment and a repair method. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam-powered device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor equipped with the blade rows to rotate and perform external work. Steam turbines are the main equipment in modern thermal power plants, and the turbine cylinder is the outer shell of the turbine. During the production process of the turbine cylinder, it is necessary to eliminate surface unevenness, wear and impurities, thereby improving the sealing performance and preventing gas or liquid leakage. Good sealing of the steam turbine can effectively prevent energy loss and leakage.

[0003] The shortcomings of the existing technology: Generally, when a dent occurs in the cylinder body, it is usually necessary to use cast fillers to fill the dent, and then repair it to be smooth through polishing repair equipment. However, during the repair process of the existing polishing repair equipment, it is necessary to replace the grinding rollers of different coarseness according to the repair progress. The replacement is more troublesome and greatly affects the repair efficiency. For this reason, we propose a turbine cylinder casting sealing surface repair polishing equipment and repair method. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a steam turbine cylinder casting sealing surface repair and polishing device and a repair method to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a steam turbine cylinder casting sealing surface repair and polishing device, comprising a fixed seat, a mounting frame slidably connected to the fixed seat via a guide column, a repair component slidably connected to the mounting frame, the repair component comprising a rotating frame, a rotating shaft, a mounting disk, a driven shaft and a grinding roller, the rotating frame being slidably connected to the mounting frame via a guide rod, the rotating shaft being rotatably connected to the rotating frame, the mounting disk being mounted on the circumferential surface of the rotating shaft, a plurality of the driven shafts being rotatably connected to the mounting disk, the grinding rollers being mounted on the circumferential surface of the driven shaft, a servo motor being mounted on the upper end of the rotating frame, a connecting shaft being mounted on the output end of the servo motor, the connecting shaft and the rotating shaft being connected via a first sprocket set, a coating mechanism being mounted on the surface of the rotating frame, the coating mechanism being used to output abrasive paste and polishing paste;

[0006] Preferably, a driving motor is installed on the upper end of the rotating frame, a driving shaft is installed on the output end of the driving motor, a linkage shaft is rotatably connected inside the rotating frame, the driving shaft and the linkage shaft are connected through a second sprocket set, a toothed disk is installed on the circumferential surface of the rotating shaft through a mounting bearing, a driving gear is installed on the circumferential surface of the linkage shaft, the driving gear is meshed with the toothed disk, and a driven gear is installed on the circumferential surface of the driven shaft, and the driven gear is meshed with the toothed disk.

[0007] Preferably, the coating mechanism includes a storage tank, a piston, an output pipe and an output head. A pair of the storage tanks are fixedly connected to the surface of the rotating frame by a clamp, the piston is slidably connected in the storage tank, a push rod is installed on the upper end of the piston, a pair of the output pipes are installed on the surface of the rotating frame through a connecting frame, the storage tanks and the output pipes are connected by a connecting pipe, and multiple output heads are installed on the output pipe.

[0008] The top end of the push rod is fixedly provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip, and the lower end of the push rod is fixedly provided with a toothed connecting strip.

[0009] Preferably, the circumferential surface of the connecting rod is rotatably connected to a lifting wheel, and the circumferential surface of the mounting plate is mounted with a plurality of grinding bumps and polishing bumps, and the total number of the grinding bumps and polishing bumps corresponds to the grinding roller.

[0010] Preferably, an electromagnet block is installed at the lower end of the fixing seat, an electric push rod is installed at the upper end of the fixing seat, and the output end of the electric push rod is fixedly connected to the mounting frame.

[0011] Preferably, a screw rod is rotatably connected in the mounting frame, the screw rod is threadedly connected to the rotating frame, and the screw rod is connected to the output end of the translation motor installed at the rear end of the mounting frame.

[0012] Preferably, a shielding plate is installed on the surface of the rotating frame, and the shielding plate is located at the rear end of the installation plate.

[0013] A method for repairing the sealing surface of a steam turbine cylinder casting, comprising the following steps:

[0014] Step 1: Fix the equipment on the sealing surface of the steam turbine cylinder so that the repair component is parallel to the cylinder sealing surface, and then adjust the position of the mounting plate to align with the repair position of the cylinder sealing surface;

[0015] Step 2: Switch the grinding roller with the smallest mesh to the bottom, control the rotation of the grinding roller, and move it back and forth and continuously descend to continuously grind the repair position of the cylinder sealing surface;

[0016] Step 3: After grinding to the designated position, switch to grinding rollers of different mesh sizes to grind the repaired position of the cylinder body. The mesh sizes of the grinding rollers are adjusted from small to large, so that the repair process of the cylinder body sealing surface is gradually completed from grinding to polishing.

[0017] Step 4: During the repair process of the cylinder sealing surface by the grinding roller, when the grinding roller is grinding, the grinding paste or polishing paste is automatically output on the repair surface of the cylinder to improve the overall repair effect of the cylinder sealing surface.

[0018] The technical effects and advantages of the present invention are as follows:

[0019] 1. The present invention arranges a plurality of grinding rollers in the mounting plate, controls the rotation of the grinding rollers, and then gradually lowers the position when the grinding rollers move back and forth, so that the raised parts of the cylinder body can be ground. Subsequently, the rotation of the mounting plate is controlled by different mesh sizes of the grinding rollers, and the grinding rollers are switched in sequence, which can achieve the effect of switching from grinding to polishing the repaired parts of the cylinder body. At the same time, the equipment is directly fixed on the sealing surface of the cylinder body, which can ensure that the grinding rollers in the repair component remain parallel to the sealing surface of the cylinder body when moving back and forth, so that the sealing surface of the repaired cylinder body can remain flush with other surfaces.

[0020] 2. The present invention uses the action of the grinding protrusions and the polishing protrusions. When the grinding roller that plays a grinding effect moves to the bottom, the corresponding grinding protrusion will push the left lifting wheel upwards, so that the left lifting wheel is lifted, thereby driving the left connecting rod and the friction wheel to lift up. At this time, when the rotating frame moves back and forth, the grinding paste can be squeezed out from the storage tank on the left. When the grinding roller that plays a polishing effect moves to the bottom, the polishing protrusion on the right will push the right lifting wheel to drive the right friction wheel to contact the friction strip, so that the right piston can be controlled to descend and the polishing paste can be squeezed out. When grinding or polishing the cylinder sealing surface, the grinding paste and polishing paste that play a corresponding auxiliary role can be automatically controlled to be squeezed out, thereby improving the effect of repairing the cylinder sealing surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the right view in the present invention;

[0023] Figure 3is a schematic diagram of the fixing seat in the present invention;

[0024] Figure 4 is a schematic diagram of the repair component of the present invention;

[0025] Figure 5 Schematic diagram of the servo motor in the present invention;

[0026] Figure 6 Schematic diagram of the driving motor in the present invention;

[0027] Figure 7 is a schematic diagram of a front cross-sectional view of a turret in the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of part A;

[0029] Figure 9 Schematic diagram of the coating mechanism of the present invention;

[0030] Figure 10 Schematic diagram of the telescopic rod disassembly in the present invention;

[0031] Figure 11 Schematic diagram of the output tube in the present invention.

[0032] The accompanying drawings are marked as follows: 1. fixing seat; 101. guide column; 102. mounting frame; 103. electromagnet block; 104. electric push rod; 2. repair component; 201. rotating frame; 202. guide rod; 203. rotating shaft; 204. mounting plate; 205. driven shaft; 206. grinding roller; 207. servo motor; 208. connecting shaft; 209. first sprocket group; 3. coating mechanism; 301. storage tank; 302. piston; 303. push rod; 304. output pipe; 305. connecting pipe; 306. output head; 4. driving motor; 401. driving shaft; 402. linkage shaft; 403. second Sprocket assembly; 404, mounting bearing; 405, toothed disc; 406, driving gear; 407, driven gear; 5, slide groove; 501, slider; 502, tension spring; 503, connecting rod; 504, one-way bearing; 505, friction wheel; 506, friction strip; 507, first bevel gear; 508, rotating seat; 509, telescopic cylinder; 5010, threaded rod; 5011, telescopic rod; 5012, second bevel gear; 5013, spring; 5014, pressure block; 5015, lifting wheel; 5016, grinding bump; 5017, polishing bump; 6, screw rod; 601, translation motor; 7, baffle. DETAILED DESCRIPTION

[0033] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The steam turbine cylinder casting sealing surface repair and polishing equipment and repair method involved in the present invention are not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figure 1-6 As shown, in one embodiment, a steam turbine cylinder casting sealing surface repair and polishing device is proposed, including a fixed seat 1, a mounting frame 102 is slidably connected to the fixed seat 1 through a guide column 101, a repair component 2 is slidably connected to the mounting frame 102, and the repair component 2 includes a rotating frame 201, a rotating shaft 203, a mounting plate 204, a driven shaft 205 and a grinding roller 206. The rotating frame 201 is slidably connected to the mounting frame 102 through a guide rod 202, and the rotating shaft 203 is rotatably connected to the rotating frame 2 01, the mounting plate 204 is mounted on the circumferential surface of the rotating shaft 203, multiple driven shafts 205 are rotatably connected in the mounting plate 204, and the grinding rollers 206 are all mounted on the circumferential surface of the driven shaft 205. A servo motor 207 is mounted on the upper end of the rotating frame 201, and a connecting shaft 208 is mounted on the output end of the servo motor 207. The connecting shaft 208 is connected to the rotating shaft 203 through a first sprocket set 209. A coating mechanism 3 is mounted on the surface of the rotating frame 201, and the coating mechanism 3 is used to output grinding paste and polishing paste.

[0035] In practical application, the embodiment of the present invention is to place the fixing seat 1 on the sealing surface of the cylinder body of the steam turbine, and then adjust the position of the mounting plate 204 so that it is directly opposite to the raised part of the cylinder body after repair. At the same time, the height position of the mounting plate 204 is adjusted so that the lowermost grinding roller 206 is close to the raised part that needs to be repaired. Since a plurality of grinding rollers 206 are provided in the mounting plate 204, and the mesh counts of the grinding rollers 206 are different, by switching them in sequence, the raised part of the cylinder body can be polished from grinding. Then, by controlling the operation of the servo motor 207, the servo motor 207 drives the connecting shaft 208 to rotate, and the connecting shaft 20 8 The rotating shaft 203 is driven to rotate by the action of the first sprocket group 209, and then the mounting plate 204 is driven to rotate, so that the grinding roller 206 with the smallest mesh number is at the bottom, and then the grinding roller 206 can be controlled to rotate, and the rotating frame 201 is controlled to move back and forth in the mounting frame 102, driving the grinding roller 206 to move back and forth, and when the grinding roller 206 completes each reciprocating movement during the rotation process, the mounting frame 102 is controlled to drop one position, driving the grinding roller 206 to drop, and gradually grinding the raised part of the cylinder sealing surface. By this reciprocating motion, the raised part of the cylinder sealing surface can be ground flat, and at the same time, a gap is left between the raised part and the cylinder plane. The margin is used to prevent the grinding roller 206 with a smaller mesh number from damaging the surface near the cylinder repair surface. Subsequently, the mounting plate 204 is controlled to reset part of the position upward, and the servo motor 207 is controlled to operate again to drive the mounting plate 204 to rotate, and the grinding roller 206 with a larger mesh number is moved to the bottom. Then, the switched grinding roller 206 is used to grind the cylinder protrusion repair position again, and in the process of grinding, the grinding paste is automatically squeezed out at the cylinder repair position to remove larger defects on the cylinder repair surface, such as scratches or rough surfaces, laying the foundation for subsequent processing. Since the cylinder is gradually repaired by two grinding rollers 206 with different mesh numbers, the grinding paste is automatically squeezed out at the cylinder repair position to remove larger defects on the cylinder repair surface, such as scratches or rough surfaces, laying the foundation for subsequent processing. The repaired raised part is ground flat, and then when the mounting disk 204 is controlled to rotate again, the subsequent grinding roller 206 plays a polishing effect. The grinding roller 206 with a polishing effect is continuously switched to the bottom to polish the repaired part. At the same time, the polishing paste is automatically squeezed out during the polishing process. The surface is finely processed after grinding. The surface of the repaired part of the cylinder body reaches a mirror gloss through friction, and the fine scratches on the surface are repaired, thereby achieving the effect of repairing the cylinder body sealing surface. In the process of repairing the cylinder body sealing surface, the grinding rollers 206 with different mesh sizes are automatically switched, which can efficiently and quickly complete the repair operation of the cylinder body sealing surface.

[0036] like Figure 6 and 7As shown, as a preferred embodiment of the present invention, a driving motor 4 is installed on the upper end of the rotating frame 201, and a driving shaft 401 is installed on the output end of the driving motor 4. A linkage shaft 402 is rotatably connected inside the rotating frame 201, and the driving shaft 401 and the linkage shaft 402 are connected through a second sprocket set 403. A toothed disc 405 is installed on the circumferential surface of the rotating shaft 203 through a mounting bearing 404, and a driving gear 406 is installed on the circumferential surface of the linkage shaft 402, and the driving gear 406 is meshed with the toothed disc 405. A driven gear 407 is installed on the circumferential surface of the driven shaft 205, and the driven gear 407 is meshed with the toothed disc 405.

[0037] When the embodiment of the present invention is actually used, by controlling the operation of the drive motor 4, the drive motor 4 will drive the drive shaft 401 to rotate, and the drive shaft 401 will drive the linkage shaft 402 to rotate under the action of the second sprocket set 403, and the linkage shaft 402 will drive the drive gear 406 to rotate, and the drive gear 406 will drive the toothed disc 405 to rotate. By installing the bearing 404, the rotating shaft 203 will not be driven to rotate, and then the toothed disc 405 will drive multiple driven gears 407 to rotate, and the driven gear 407 will drive the driven shaft 205 to rotate, thereby achieving the effect of driving the grinding roller 206 to rotate.

[0038] In one embodiment of the present invention, since the gear plate 405 is relatively thick, when the driven shaft 205 and the driven gear 407 revolve, they will not interfere with the linkage shaft 402 and the driving gear 406 .

[0039] like Figure 4 、 9 As shown in Figure 10, as another preferred embodiment of the present invention, the coating mechanism 3 includes a storage tank 301, a piston 302, an output pipe 304 and an output head 306. A pair of storage tanks 301 are fixedly connected to the surface of the rotating frame 201 by a clamp, the piston 302 is slidably connected in the storage tank 301, a push rod 303 is installed on the upper end of the piston 302, a pair of output pipes 304 are installed on the surface of the rotating frame 201 through a connecting frame, the storage tank 301 and the output pipe 304 are connected by a connecting pipe 305, and multiple output heads 306 are installed on the output pipe 304.

[0040] In actual application of the embodiment of the present invention, when the grinding roller 206 grinds and polishes the cylinder sealing surface, the push rod 303 is controlled to be pressed down, and the push rod 303 drives the piston 302 to be pressed down, and the piston 302 drives the grinding paste or polishing paste therein to be squeezed out from the storage tank 301, and then input into the output pipe 304 through the connecting pipe 305, and finally squeezed out through the output head 306 and falls on the surface of the cylinder repair. Subsequently, when the grinding roller 206 moves forward, the grinding roller 206 will contact the extruded grinding paste or polishing paste, and automatically replenish the grinding paste and polishing paste when grinding and polishing the cylinder sealing surface, thereby improving the grinding and polishing effect of the cylinder sealing surface.

[0041] like Figure 7-10 As shown, as another preferred embodiment of the present invention, a sliding groove 5 is opened on the surface of the rotating frame 201, and a slider 501 is slidably connected in the sliding groove 5. A tension spring 502 is installed between the slider 501 and the sliding groove 5. A connecting rod 503 is rotatably connected in the slider 501. A friction wheel 505 is installed on the circumferential surface of the connecting rod 503 through a one-way bearing 504. A friction strip 506 is installed at the lower end of the mounting frame 102. A first bevel gear 507 is installed on the end surface of the connecting rod 503. A rotating seat 508 is installed on the surface of the rotating frame 201. The rotating seat 508 is installed on the surface of the rotating frame 201. 08 is rotatably connected to the telescopic cylinder 509 and the threaded rod 5010, the threaded rod 5010 is fixedly connected to the telescopic cylinder 509, the telescopic cylinder 509 is slidably connected to the telescopic rod 5011, the second bevel gear 5012 installed on the upper end of the telescopic rod 5011 is engaged with the first bevel gear 507, a spring 5013 is installed between the second bevel gear 5012 and the telescopic cylinder 509, the pressure block 5014 threadedly connected to the circumferential surface of the threaded rod 5010 is slidably connected to the rotating seat 508, and the upper end of the push rod 303 is fixedly connected to the pressure block 5014.

[0042] When the embodiment of the present invention is actually used, when the rotating frame 201 slides back and forth in the mounting frame 102, the mounting frame 102 will synchronously drive the slider 501, the connecting rod 503 and the friction wheel 505 to move. When the rotating frame 201 moves backward, the friction wheel 505 will contact the friction strip 506 during the backward movement. Since the friction wheel 505 and the connecting rod 503 are connected by the one-way bearing 504, the friction wheel 505 will drive the connecting rod 503 to rotate, and the connecting rod 503 will drive the telescopic rod 5011 through the action of the first bevel gear 507 and the second bevel gear 5012. When the piston 302 is pushed down, the grinding paste or polishing paste in the storage tank 301 is squeezed out. When the rotating frame 201 moves forward, the friction wheel 505 is still in contact with the friction strip 506. At this time, under the action of the one-way bearing 504, the friction wheel 505 and the one-way bearing 504 rotate, and will not drive the connecting rod 503 to rotate, thereby avoiding driving the piston 302 to move upward.

[0043] In one embodiment of the present invention, by setting the position and size of the friction strip 506 at the lower end of the mounting frame 102, the rotation timing and time of the friction wheel 505 can be changed, and the timing and time of the extrusion of the grinding paste or polishing paste can be controlled so that the sealing surface that needs to be repaired can be covered after extrusion.

[0044] like Figure 2 、 7As shown in Figure 8, as another preferred embodiment of the present invention, the circumferential surface of the connecting rod 503 is rotatably connected to a lifting wheel 5015, and the circumferential surface of the mounting plate 204 is installed with multiple grinding bumps 5016 and polishing bumps 5017, and the total number of grinding bumps 5016 and polishing bumps 5017 corresponds to the grinding roller 206.

[0045] When the embodiment of the present invention is actually used, the lifting wheel 5015 can be pushed up by the action of the grinding protrusion 5016 and the polishing protrusion 5017, thereby driving the connecting rod 503 and the friction wheel 505 to move upward, so that the friction wheel 505 can contact the friction strip 506. Since the grinding protrusion 5016 corresponds to the position and number of the grinding roller 206 that has a grinding effect, and the polishing protrusion 5017 corresponds to the position and number of the grinding roller 206 that has a polishing effect, when the grinding roller 206 that has a grinding effect moves to the bottom, the corresponding grinding protrusion 5016 will push the left lifting wheel 5015 upward, so that the left lifting wheel 5015 is lifted up, thereby driving the position of the left connecting rod 503 and the friction wheel 505 to be lifted. At this time, when the rotating frame 201 moves back and forth, The grinding paste can be squeezed out from the storage tank 301 on the left, and the connecting rod 503 and friction wheel 505 on the right are pulled down by the tension spring 502 to pull the slider 501, so that its position is lowered. When the rotating frame 201 moves back and forth, the friction wheel 505 on the right does not contact the friction strip 506, and thus does not drive the connecting rod 503 on the right to rotate. When the grinding roller 206 that plays a polishing effect moves to the bottom, the polishing bump 5017 on the right will push the lifting wheel 5015 on the right to drive the friction wheel 505 on the right to contact the friction strip 506, so that the piston 302 on the right can be controlled to descend and the polishing paste can be squeezed out. When grinding or polishing the cylinder sealing surface, the grinding paste and polishing paste that play a corresponding auxiliary role can be automatically controlled to be squeezed out, thereby improving the effect of repairing the cylinder sealing surface.

[0046] In one case of an embodiment of the present invention, the first bevel gear 507 and the second bevel gear 5012 are always engaged under the action of the spring 5013. At the same time, under the action of the tension spring 502, the tension of the tension spring 502 is greater than the tension of the spring 5013. When the grinding protrusion 5016 or the polishing protrusion 5017 does not lift the lifting wheel 5015, the tension spring 502 will pull the slider 501 to a lower position, so that the friction wheel 505 at the corresponding position is separated from the friction strip 506. When the repair component 2 moves back and forth, the friction wheel 505 at the corresponding position will not drive the connecting rod 503 to rotate, and thus the grinding paste or polishing paste at the corresponding position will not be output.

[0047] like Figure 1-3As shown, as another preferred embodiment of the present invention, an electromagnet block 103 is installed at the lower end of the fixing base 1, and an electric push rod 104 is installed at the upper end of the fixing base 1, and the output end of the electric push rod 104 is fixedly connected to the mounting frame 102.

[0048] When the embodiment of the present invention is actually used, under the action of the electromagnet block 103, after it is turned on, the fixing seat 1 can be lowered and fixed on the cylinder sealing surface by the action of the magnetic force, thereby improving the stability of the equipment during operation. At the same time, the equipment is directly fixed on the cylinder sealing surface, which can ensure that the grinding roller 206 in the repair component 2 remains parallel to the cylinder sealing surface when moving back and forth, so that the repaired cylinder sealing surface can be kept flush with other surfaces. At the same time, by controlling the operation of the electric push rod 104, the electric push rod 104 can drive the mounting frame 102 to rise and fall with the cooperation of the guide column 101, thereby achieving the effect of accurately controlling the lifting position of the grinding roller 206, thereby ensuring that the cylinder sealing surface is repaired and flat.

[0049] like Figure 1-3 As shown, as another preferred embodiment of the present invention, a screw rod 6 is rotatably connected in the mounting frame 102 , the screw rod 6 is threadedly connected to the rotating frame 201 , and the screw rod 6 is connected to the output end of the translation motor 601 installed at the rear end of the mounting frame 102 .

[0050] In actual application, the embodiment of the present invention controls the operation of the translation motor 601, which drives the screw 6 to rotate. At the same time, with the cooperation of the guide rod 202, the repair component 2 can be driven to move back and forth.

[0051] like Figure 1 and 2 As shown, as another preferred embodiment of the present invention, a shielding plate 7 is installed on the surface of the rotating frame 201, and the shielding plate 7 is located at the rear end of the installation plate 204.

[0052] In actual application, when the grinding roller 206 rotates to repair and polish the cylinder sealing surface, the shielding plate 7 can shield the impurities splashing backward, making it easier to clean the impurities generated by the subsequent cylinder repair.

[0053] The present invention also provides a method for repairing the sealing surface of a steam turbine cylinder casting, which specifically comprises the following steps:

[0054] Step 1: Fix the device on the sealing surface of the steam turbine cylinder so that the repair component 2 is parallel to the cylinder sealing surface, and then adjust the position of the mounting plate 204 to align with the repair position of the cylinder sealing surface;

[0055] Step 2: Switch the grinding roller 206 with the smallest mesh to the bottom, control the rotation of the grinding roller 206, and at the same time make the grinding roller 206 move forward and backward and continuously descend to continuously grind the repair position of the cylinder sealing surface;

[0056] Step 3: After grinding to the designated position, switch to grinding rollers 206 of different mesh sizes to grind the repaired position of the cylinder body. The mesh sizes of the grinding rollers 206 are gradually increased from small to large, so that the repair process of the cylinder body sealing surface is gradually completed from grinding to polishing.

[0057] Step 4: During the process of the grinding roller 206 repairing the cylinder sealing surface, when the grinding roller 206 is grinding, the grinding paste or polishing paste is automatically output on the repaired surface of the cylinder, thereby improving the overall repair effect of the cylinder sealing surface.

[0058] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0059] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0060] Finally: 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steam turbine cylinder casting sealing surface repair and polishing device, comprising a fixing seat (1), characterized in that: The fixing seat (1) is slidably connected to a mounting frame (102) via a guide column (101), and a repair component (2) is slidably connected to the mounting frame (102). The repair component (2) comprises a rotating frame (201), a rotating shaft (203), a mounting plate (204), a driven shaft (205), and a grinding roller (206). The rotating frame (201) is slidably connected to the mounting frame (102) via a guide rod (202), the rotating shaft (203) is rotatably connected to the rotating frame (201), and the mounting plate (204) is mounted on the rotating shaft (201). 3) On the circumferential surface, a plurality of driven shafts (205) are rotatably connected in the mounting plate (204), and the grinding rollers (206) are all mounted on the circumferential surface of the driven shafts (205). A servo motor (207) is mounted on the upper end of the rotating frame (201), and a connecting shaft (208) is mounted on the output end of the servo motor (207). The connecting shaft (208) is connected to the rotating shaft (203) via a first sprocket set (209). A coating mechanism (3) is mounted on the surface of the rotating frame (201), and the coating mechanism (3) is used to output grinding paste and polishing paste.

2. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 1, characterized in that: A driving motor (4) is installed at the upper end of the rotating frame (201), and a driving shaft (401) is installed at the output end of the driving motor (4). A linkage shaft (402) is rotatably connected in the rotating frame (201), and the driving shaft (401) and the linkage shaft (402) are connected via a second sprocket set (403). A toothed disc (405) is installed on the circumferential surface of the rotating shaft (203) via a mounting bearing (404). A driving gear (406) is installed on the circumferential surface of the linkage shaft (402), and the driving gear (406) is meshed with the toothed disc (405). A driven gear (407) is installed on the circumferential surface of each driven shaft (205), and each driven gear (407) is meshed with the toothed disc (405).

3. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 1, characterized in that: The coating mechanism (3) comprises a storage tank (301), a piston (302), an output pipe (304) and an output head (306); a pair of the storage tanks (301) are fixedly connected to the surface of the rotating frame (201) via a clamp; the piston (302) is slidably connected in the storage tank (301); a push rod (303) is installed on the upper end of the piston (302); a pair of the output pipes (304) are installed on the surface of the rotating frame (201) via a connecting frame; the storage tanks (301) and the output pipes (304) are connected via a connecting pipe (305); and a plurality of the output heads (306) are all installed on the output pipes (304).

4. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 3, characterized in that: The surface of the rotating frame (201) is provided with a sliding groove (5), a slider (501) is slidably connected in the sliding groove (5), a tension spring (502) is installed between the slider (501) and the sliding groove (5), a connecting rod (503) is rotatably connected in the slider (501), a friction wheel (505) is installed on the circumferential surface of the connecting rod (503) through a one-way bearing (504), a friction strip (506) is installed at the lower end of the mounting frame (102), a first bevel gear (507) is installed on the end surface of the connecting rod (503), a rotating seat (508) is installed on the surface of the rotating frame (201), and the rotating seat (508) is rotated in the rotating seat (508). A telescopic cylinder (509) and a threaded rod (5010) are movably connected. The threaded rod (5010) is fixedly connected to the telescopic cylinder (509). A telescopic rod (5011) is slidably connected inside the telescopic cylinder (509). A second bevel gear (5012) installed on the upper end of the telescopic rod (5011) is meshed with the first bevel gear (507). A spring (5013) is installed between the second bevel gear (5012) and the telescopic cylinder (509). A pressure block (5014) threadedly connected to the circumferential surface of the threaded rod (5010) is slidably connected to the rotating seat (508). The upper end of the push rod (303) is fixedly connected to the pressure block (5014).

5. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 4, characterized in that: The circumferential surface of the connecting rod (503) is rotatably connected to a lifting wheel (5015), and the circumferential surface of the mounting plate (204) is mounted with a plurality of grinding bumps (5016) and polishing bumps (5017), the total number of which corresponds to the number of the grinding roller (206).

6. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 1, characterized in that: An electromagnet block (103) is installed at the lower end of the fixing seat (1), an electric push rod (104) is installed at the upper end of the fixing seat (1), and an output end of the electric push rod (104) is fixedly connected to the mounting frame (102).

7. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 6, characterized in that: A screw rod (6) is rotatably connected inside the mounting frame (102), the screw rod (6) is threadedly connected to the rotating frame (201), and the screw rod (6) is connected to the output end of a translation motor (601) mounted at the rear end of the mounting frame (102).

8. The steam turbine cylinder casting sealing surface repair and polishing equipment according to claim 1, characterized in that: A shielding plate (7) is installed on the surface of the rotating frame (201), and the shielding plate (7) is located at the rear end of the installation plate (204).

9. A method for repairing the sealing surface of a steam turbine cylinder casting, applied to the steam turbine cylinder casting sealing surface repair and polishing equipment according to any one of claims 1 to 8, characterized in that: The specific steps include: Step 1: Fix the device on the sealing surface of the steam turbine cylinder so that the repair component (2) and the cylinder sealing surface are in parallel, and then adjust the position of the mounting plate (204) to align with the repair position of the cylinder sealing surface; Step 2: Switch the grinding roller (206) with the smallest mesh number to the bottom, control the grinding roller (206) to rotate, and simultaneously move the grinding roller (206) back and forth and continuously descend to continuously grind the repair position of the cylinder sealing surface; Step 3: After grinding to the designated position, switch to grinding rollers (206) of different mesh sizes to grind the repaired position of the cylinder body, with the mesh sizes of the grinding rollers (206) increasing from small to large, so that the repair process of the cylinder body sealing surface is gradually completed from grinding to polishing; Step 4: During the process of the grinding roller (206) repairing the cylinder body sealing surface, when the grinding roller (206) is grinding, the grinding paste or polishing paste is automatically output on the cylinder body repair surface, thereby improving the overall repair effect of the cylinder body sealing surface.

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