A steam turbine blade repair device

Abstract

The present invention relates to a steam turbine blade repair device, comprising a housing, on which a winding assembly, a locking assembly, and a limiting assembly are provided; a working chamber, a coolant tank, and a cooling chamber are provided within the housing; wherein the locking assembly comprises a locking shell having a first cavity, a movable part, and a first return spring; the limiting assembly comprises a first chamber, a second chamber, a cam, and a second return spring; the working chamber is provided with a first cavity, a second cavity, a first piston plate, a first return spring, and a cam; and the cooling chamber is connected to the coolant tank. In the steam turbine blade repair device provided by the present invention, if a laser gun is locked in the locking assembly, the top of the triggering portion can abut against the laser gun, and the blocking portion divides the first cavity into a cavity A and a cavity B, isolating the second cavity connected to cavity A from the external atmospheric pressure, thereby limiting the winding drum and causing the winding drum to stop reeling and unreeling; and liquid cooling of the laser is achieved, thereby preventing damage to the laser and extending the service life of the laser.

Description

Technical Field

[0001] The present invention relates to the technical field of blade repair, and in particular to a steam turbine blade repair device. Background Art

[0002] The last-stage blades of a steam turbine are the last-stage blades of a power plant's steam turbine unit. They are the longest and heaviest blades. The working medium of the steam turbine is water vapor. When the airflow reaches the last-stage blades, the water vapor contains a certain amount of liquid water droplets. These water droplets will scour the high-speed rotating last-stage blades, greatly affecting the strength, balance, working efficiency and life of the last-stage blades of the steam turbine. Since the last-stage blades of the steam turbine are the longest and heaviest, the centrifugal force they are subjected to is also the greatest. If they are not repaired in time, they may even cause the blades to break, resulting in major quality accidents.

[0003] Laser cladding forming technology utilizes the extremely high energy concentration of high-energy laser beams to instantly melt the alloy powder with special physical, chemical or mechanical properties that is pre-placed on the substrate surface or automatically delivered synchronously with the laser. At the same time, the substrate is partially melted to form a new composite material. After the laser beam is scanned, it quickly solidifies to obtain a dense coating that is metallurgically bonded to the substrate to achieve the purpose of restoring geometric dimensions and surface strengthening. For this reason, laser welding is often used in the repair process of existing turbine last-stage blades.

[0004] During the use of existing laser welding devices, due to the large workload of turbine blade welding, the laser is prone to heat up when running for a long time and needs to be cooled. In addition, the line between the laser and the laser gun is not convenient to reel up, and the line is prone to become tangled after reeling, and the cable is prone to twisting and entanglement, causing damage to the cable. Summary of the Invention

[0005] The present invention provides a steam turbine blade repair device, which is used to solve the technical problems in the prior art that the line between the laser and the laser gun is difficult to reel up, the line is easily scattered after reeling up, the cable is easily twisted and entangled, causing damage to the cable, and the laser is easily heated when running for a long time, causing damage to the laser.

[0006] The present invention provides a steam turbine blade repair device, comprising:

[0007] Box;

[0008] A winding assembly, comprising a winding drum, the winding drum being rotatably mounted on the box body and used for winding a cable, the cable being used for connecting the laser gun and the laser located in the box body;

[0009] The locking assembly includes a locking shell fixedly arranged on the box body and a movable part slidably connected to the locking shell, the two ends of the movable part respectively have a touch part and a blocking part, the touching part and the blocking part are fixed relative to each other, the top end of the touching part is located above the locking shell and can abut against the laser gun, the locking shell includes a first cavity with an opening, the blocking part is sealed and slidably connected to the opening, and can divide the first cavity into cavity A and cavity B, the cavity A has a first air hole, the cavity B has a second air hole, and the second air hole is connected to the external atmospheric pressure; the locking shell is provided with a first return spring, one end of the first return spring is fixed to the locking shell, and the other end is fixed to the movable part, and the first return spring always has a movement tendency to drive the blocking part away from the bottom wall of the first cavity; and,

[0010] The limit assembly comprises a limit box fixedly mounted on the box body, the limit box having a chamber, a piston sealed in the chamber and slidably connected thereto, and dividing the chamber into a first chamber and a second chamber, a first cam being provided in the first chamber, the first cam being fixedly connected to a rotating shaft, the rotating shaft being pivotally connected to the first chamber and being transmission-connected to the winding drum; a second return spring being provided in the first chamber or the second chamber, one end of the second return spring being fixedly connected to the chamber wall of the chamber, and the other end being fixedly connected to the piston plate, and always having a tendency to drive the piston plate toward the first cam; the second chamber having a third air hole, an air pipe being connected between the third air hole and the first air hole;

[0011] A coolant tank is provided in the box body, and has a first liquid outlet and a liquid return port;

[0012] A cooling chamber is provided in the box body, the cooling chamber is connected to the external atmospheric pressure, the laser is provided in the cooling chamber, the cooling chamber has a liquid inlet and a second liquid outlet, a liquid outlet pipe is connected between the first liquid outlet and the liquid inlet, and a liquid return pipe is connected between the second liquid outlet and the liquid return port.

[0013] The steam turbine blade repair device provided by the present invention can, on the one hand, realize that when the laser gun is in working state, the take-up drum can reel in and out freely, adapt to the different working distance requirements of the laser gun and the last-stage blades of the steam turbine, and be conducive to the smooth repair work of the last-stage blades of the steam turbine; on the other hand, it can realize that when the laser gun is not in working state, the take-up drum is limited, and the take-up drum stops reeling in and out, thereby preventing the cable from loosening, preventing the cable from getting entangled, protecting the cable, extending the service life of the cable, and ensuring the function of the laser welding device; in addition, when the laser gun is not in working state, the laser gun is clamped to the clamping assembly to facilitate the storage of the laser gun and prevent the laser gun from accidentally falling during the movement of the device, thereby causing damage to the laser gun; since heat is generated during the operation of the laser, the embodiment of the present invention realizes liquid cooling of the laser by providing a coolant tank connected to the cooling chamber, thereby preventing damage to the laser and extending the service life of the laser.

[0014] Furthermore, the repair device also includes a working chamber, which is arranged in the box body, and a first piston plate is sealed and slidably connected in the working chamber, and the first piston plate divides the working chamber into a closed first chamber and a second chamber; a second cam is provided in the first chamber, and the second cam is fixed to the shaft rod, and the shaft rod is pivotally connected to the first chamber and transmission-connected to the power assembly; a third return spring is provided in the working chamber, one end of the third return spring is connected to the cavity wall of the working chamber, and the other end is connected to the first piston plate, and it always has a tendency to drive the first piston plate toward the cam; the cooling chamber is connected to the first chamber.

[0015] In the steam turbine blade repair device provided by the present invention, the first piston plate in the working chamber reciprocates to accelerate the blowing of air from the first chamber to the cooling chamber, thereby achieving gas cooling and heat dissipation of the laser in the cooling chamber.

[0016] Furthermore, a split box is fixedly provided in the coolant tank, and the split box is close to the return liquid port. The top plate of the split box has a notch, and a second piston plate is provided in the split box, and the second piston plate divides the split box into a first air cavity and a second air cavity. Relative to the second air cavity, the first air cavity is closer to the return liquid port, and the second piston plate includes a flat portion and a U-shaped portion connected to the flat portion, and the opening of the U-shaped portion faces the second air cavity, and the U-shaped portion is sealed and slidably connected to the opening; the first air cavity is connected to the external atmospheric pressure, and the second air cavity is connected to the second cavity and the external atmospheric pressure respectively, and a fourth return spring is provided in the split box, one end of the fourth return spring is fixed to the inner wall of the split box, and the other end is fixed to the second piston plate, and it always has a tendency to drive the second piston plate to move toward the second air cavity.

[0017] The turbine blade repair device provided by the present invention causes the first piston plate inside the working chamber to reciprocate under the joint action of the cam and the return spring in the working chamber, thereby accelerating the air flow in the second cavity and the second air cavity. The second piston plate reciprocates in the dividing box arranged near the return port, and the U-shaped portion of the second piston plate cools and dissipates heat for the returning coolant, thereby improving the cooling effect of the coolant on the components to be cooled.

[0018] Furthermore, the repair device includes: a first vent, a second vent, a third vent, a fourth vent, a fifth vent, a sixth vent, and a seventh vent;

[0019] The first vent hole and the sixth vent hole are provided on the cavity wall of the first cavity;

[0020] The second vent hole and the third vent hole are respectively provided on the cavity wall of the second cavity;

[0021] The fourth vent hole and the fifth vent hole are respectively provided on the cavity wall of the second air cavity;

[0022] The seventh vent hole is provided on the cavity wall of the cooling cavity;

[0023] The first vent hole, the second vent hole and the fifth vent hole are connected to the external atmospheric pressure respectively, a first vent pipe is connected between the third vent hole and the fourth vent hole, and a second vent pipe is connected between the sixth vent hole and the seventh vent hole.

[0024] Furthermore, the first vent hole is provided with a first solenoid valve; the second vent hole is provided with a second solenoid valve; the first vent pipe is provided with a third solenoid valve; the fifth vent hole is provided with a fourth solenoid valve; the second vent pipe is provided with a fifth solenoid valve;

[0025] The first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are configured as follows: if the distal edge of the cam rotates toward the direction close to the first piston plate, the first solenoid valve and the third solenoid valve are both opened, and the second solenoid valve, the fourth solenoid valve and the fifth solenoid valve are all closed; if the distal edge of the cam rotates toward the direction away from the first piston plate, the first solenoid valve and the third solenoid valve are both closed, and the second solenoid valve, the fourth solenoid valve and the fifth solenoid valve are all opened.

[0026] Furthermore, the repair device further includes a controller, and the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve are all electrically connected to the controller.

[0027] Furthermore, the number of the notches is multiple, and the multiple notches are spaced apart along the length of the top plate. The number of the flat portions and the number of the U-shaped portions are multiple, and the multiple flat portions and the U-shaped portions are alternately arranged. This arrangement, with multiple notches and multiple U-shaped portions, increases the contact area between the second piston plate and the coolant at the return port, dividing the returning coolant into multiple sections for cooling and heat dissipation, thereby improving the cooling efficiency of the returning coolant.

[0028] Furthermore, the locking shell has a partition, which divides the locking shell into the first cavity and the second cavity, the second cavity is located above the first cavity, the movable part includes a movable sheet, the movable sheet is arranged in the second cavity, the touch portion is a columnar structure, the touch portion extends along the upper surface of the movable sheet and protrudes from the upper surface of the movable sheet, the touch portion is slidably connected to the locking shell, the top end of the touch portion extends out of the upper end surface of the locking shell and can abut against the laser gun; the blocking portion is a plate-shaped structure, the blocking portion extends along the lower surface of the movable sheet and protrudes from the lower surface of the movable sheet and extends out of the lower surface of the second cavity and is slidably connected to the opening of the first cavity; one end of the first return spring located in the locking shell is connected to the cavity wall of the second cavity, and the other end is connected to the movable sheet, and always has a movement tendency to drive the blocking portion away from the bottom wall of the first cavity.

[0029] Furthermore, the winding drum includes a drum body, and a first limiting portion and a second limiting portion respectively fixed to both ends of the drum body, the first limiting portion and the second limiting portion both extending radially outward and protruding from the outer peripheral wall of the drum body, and the first limiting portion is pivotally connected to the box body;

[0030] A wire groove is provided at the central axis of the barrel, and the wire groove axially passes through the first limiting portion and the second limiting portion;

[0031] The second limiting portion is provided with a wire hole, and the axis of the wire hole is not collinear with the axis of the wire groove;

[0032] Wherein, the axial direction is the axial direction of the barrel.

[0033] The steam turbine blade repair device provided by the present invention has the following characteristics: when the winding drum rotates, the cables located at the central axis of the drum body do not rotate accordingly, thereby preventing the cables outside the two end surfaces of the winding drum from twisting and entangled when the winding drum rotates; the wire hole is provided in the second limiting portion, which is used to guide the cables to be wound around the outer peripheral wall of the drum body; the wire groove and the wire hole cooperate with each other to avoid the cables from being scattered and difficult to store, and to avoid the phenomenon of cables twisting and entangled.

[0034] Furthermore, the repair device includes a plurality of universal wheels installed at the bottom of the box body. Such an arrangement facilitates the movement of the repair device and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic cross-sectional view of a steam turbine blade repair device according to an embodiment of the present invention (I);

[0036] Figure 2 for Figure 1 The schematic diagram of the local structure is circled at B in the middle;

[0037] Figure 3 A schematic diagram of the cross-sectional structure of a steam turbine blade repair device provided by an embodiment of the present invention (II);

[0038] Figure 4 A schematic cross-sectional view of a locking assembly in a steam turbine blade repair device according to an embodiment of the present invention;

[0039] Figure 5 for Figure 4 A in the middle is circled to show a schematic diagram of the local structure;

[0040] Figure 6 A schematic cross-sectional view of a winding assembly in a steam turbine blade repair device according to an embodiment of the present invention;

[0041] Figure 7 A schematic top view of the structure of a winding assembly in a steam turbine blade repair device provided by an embodiment of the present invention;

[0042] Figure 8 A schematic cross-sectional view of a limit assembly in a steam turbine blade repair device according to an embodiment of the present invention;

[0043] Description of reference numerals:

[0044] 10. Box; 101. Laser gun; 102. Laser; 103. Cable; 104. Slide rail; 105. Universal wheel;

[0045] 100, winding assembly; 110, winding drum; 120, drum body; 121, wire groove; 122, first opening; 130, first limiting portion; 131, annular chute; 132, gear ring; 140, second limiting portion; 141, wire hole; 142, second opening; 143, handle; 144, flexible sleeve;

[0046] 200, snap-fit ​​assembly; 201, clamping block; 202, flexible pad; 203, air pipe; 210, snap-fit ​​housing; 220, movable member; 221, movable plate; 222, actuating portion; 223, blocking portion; 230, first cavity; 231, first air hole; 240, second cavity; 241, first return spring;

[0047] 300, limit assembly; 310, limit box; 320, piston; 330, first chamber; 331, first cam; 332, rotating shaft; 333, first gear; 334, second gear; 340, second chamber; 341, third air hole; 342, second return spring;

[0048] 400, working chamber; 410, first piston plate; 420, first chamber; 421, shaft; 422, second cam; 423, first vent hole; 424, first solenoid valve; 425, sixth vent hole; 426, fifth solenoid valve; 427, second vent pipe; 430, second chamber; 431, second vent hole; 432, second solenoid valve; 433, third vent hole; 434, first vent pipe; 435, third solenoid valve; 440, third return spring;

[0049] 500, coolant tank; 501, first liquid outlet; 502, liquid return port; 503, liquid outlet pipe; 504, liquid return pipe; 505, liquid pump; 510, partition box; 520, top plate; 521, notch; 530, second piston plate; 531, flat portion; 532, U-shaped portion; 540, first air cavity; 550, second air cavity; 551, fourth vent hole; 552, fifth vent hole; 553, fourth solenoid valve; 554, third vent pipe; 560, third limiter; 570, fourth return spring;

[0050] 600, cooling chamber; 601, liquid inlet; 602, second liquid outlet; 604, heat dissipation hole; 605, seventh vent hole;

[0051] 700. Controller. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following Figure 1 —8 describes the specific embodiments of the present invention in detail.

[0053] See attached Figure 1The embodiment of the present invention provides a steam turbine blade repair device including a housing 10, a winding assembly 100, a clamping assembly 200, a limiting assembly 300, a coolant tank 500 and a cooling chamber 600, wherein the winding assembly 100 includes a winding drum 110, which is rotatably arranged on the housing 10 and used to wind a cable 103, and the cable 103 is used to connect the laser gun 101 and the laser 102 located in the housing 10; the clamping assembly 200 includes a clamping shell 210 fixedly arranged on the housing 10 and a movable part 220 slidably connected to the clamping shell 210, and the two ends of the movable part 220 respectively have a touch portion 222 and a blocking portion 223 The touch portion 222 and the blocking portion 223 are fixed relative to each other, the top of the touch portion 222 is located above the engaging shell 210 and can abut against the laser gun 101, the engaging shell 210 includes a first cavity 230 with an opening, the blocking portion 223 is sealed and slidably connected to the opening, and can divide the first cavity 230 into cavity A and cavity B, cavity A has a first air hole 231, cavity B has a second air hole, and the second air hole is connected to the external atmospheric pressure; the engaging shell 210 is provided with a first return spring 241, one end of the first return spring 241 is fixed to the engaging shell 210, and the other end is fixed to the movable part 220, and always has a driving blocking portion 223 The movement trend away from the bottom wall of the first cavity 230; the limiting assembly 300 includes a limiting box 310 fixed to the box body 10, the limiting box 310 has a chamber, the chamber is sealed and slidably connected to the piston 320, and the chamber is divided into a first chamber 330 and a second chamber 340, a first cam 331 is provided in the first chamber 330, the first cam 331 is fixed to the rotating shaft 332, the rotating shaft 332 is pivotally connected to the first chamber 330 and is transmission-connected to the winding drum 110; a second return spring 342 is provided in the chamber, one end of the second return spring 342 is fixed to the cavity wall of the chamber, and the other end is fixed to the piston 320, and always has a driving piston 320 Movement trend toward the cam; the second chamber 340 has a third air hole 341, and an air pipe 203 is connected between the third air hole 341 and the first air hole 231; a coolant tank 500 is arranged in the box body 10, and the coolant tank 500 has a first liquid outlet 501 and a return liquid port 502; a cooling cavity 600 is arranged in the box body 10, and the cooling cavity 600 is connected to the external atmospheric pressure. The laser 102 is arranged in the cooling cavity 600, and the cooling cavity 600 has a liquid inlet 601 and a second liquid outlet 602. A liquid outlet pipe 503 is connected between the first liquid outlet 501 and the liquid inlet 601, and a return liquid pipe 504 is connected between the second liquid outlet 602 and the return liquid port 502.

[0054] In the embodiment of the present invention, a liquid pump 505 is provided on the liquid outlet pipe 503 .

[0055] The working principle of the embodiment of the present invention is as follows: When the laser gun 101 needs to stop working, the laser gun 101 is clamped on the clamping assembly 200, and the laser gun 101 abuts against the trigger portion 222. Under the action of gravity of the laser gun 101, the trigger portion 222 drives the blocking portion 223 to move along the height direction of the first cavity 230 and abuts against the bottom end surface of the first cavity 230, thereby dividing the first cavity 230 into cavity A and cavity B. The third air hole 341 of the second cavity 340 is isolated from the second air hole in cavity B that is connected to the external atmospheric pressure through the first air hole 231 in cavity A, and the second cavity 240 becomes a closed space. The piston 320 stops, the first cam 331 stops rotating, and the rotating shaft 332 stops rotating. The laser gun 101 is prevented from rotating and the winding drum 110 is limited, so that the winding drum 110 stops winding and releasing the line. If the laser gun 101 needs to work, the laser gun 101 is removed from the engaging assembly 200, and the laser gun 101 does not abut against the triggering portion 222. The first return spring 241 in the engaging assembly 200 releases its elastic potential energy, driving the blocking portion 223 to move along the bottom wall away from the first cavity 230, so that the third air hole 341 of the second chamber 340 is connected to the second air hole in the cavity B that is connected to the external atmospheric pressure through the first air hole 231 of the cavity A. The piston 320 reciprocates, the first cam 331 rotates, and the rotating shaft 332 rotates with the winding drum 110, so that the winding drum 110 can rewind and release the line.

[0056] When the laser gun 101 needs to work, the controller 700 starts the laser 102, and the laser gun 101 cooperates with the laser gun 101 to perform welding. The laser 102 generates heat during the operation. The present invention uses the liquid pump 505 to transport the coolant in the coolant tank 500 through the liquid outlet pipe 503 to the bellows inside the laser 102. The coolant that absorbs heat flows back to the coolant tank 500 through the return pipe 504, realizing the circulation of the coolant to cool and dissipate heat for the laser 102.

[0057] Therefore, the steam turbine blade repair device provided by the embodiment of the present invention can, on the one hand, realize that when the laser gun 101 is in the working state, the take-up drum 110 can reel in and release the wire freely, adapting to the different working distance requirements of the laser gun 101 and the last-stage blade of the steam turbine, which is conducive to the smooth implementation of the repair work of the last-stage blade of the steam turbine; on the other hand, it can realize that when the laser gun 101 is in the non-working state, the take-up drum 110 is limited, and the take-up drum 110 stops reeling in and releasing the wire, thereby preventing the cable 103 from loosening and entanglement, protecting the cable 103, and extending the cable 103. 3, thereby ensuring the function of the laser welding device; in addition, when the laser gun 101 is not working, the laser gun 101 is clamped to the clamping assembly 200, which is convenient for the storage of the laser gun 101 and prevents the laser gun 101 from accidentally falling during the movement of the device, thereby causing damage to the laser gun 101; since the laser 102 generates heat during the operation of the laser 102, the embodiment of the present invention realizes liquid cooling of the laser 102 by providing a coolant tank 500 connected to the cooling cavity 600, thereby preventing damage to the laser 102 and extending the service life of the laser 102.

[0058] See attached Figure 1 In an embodiment of the present invention, the repair device also includes a working chamber 400, which is arranged in the box body 10. The working chamber 400 is sealed and slidably connected with a first piston plate 410, which divides the working chamber 400 into a sealed first cavity 420 and a second cavity 430; a second cam 422 is provided in the first cavity 420, and the second cam 422 is fixed to the shaft 421, and the shaft 421 is pivotally connected to the first cavity 420 and transmission connected to the power assembly; a third return spring 440 is provided in the working chamber 400, one end of the third return spring 440 is connected to the cavity wall of the working chamber 400, and the other end is connected to the first piston plate 410, and always has a tendency to drive the first piston plate 410 toward the second cam 422; the cooling chamber 600 is connected to the first cavity 420.

[0059] In the embodiment of the present invention, the power component is a motor, and the power output end of the motor is transmission-connected to the shaft 421 .

[0060] It should be noted that when the distal edge of the second cam 422 rotates away from the first piston plate 410, the third return spring 440 in the working chamber 400 releases elastic potential energy, pushing the first piston plate 410 to move toward the cam or shaft 421. The second cavity 430 inhales air from the outside, and the first cavity 420 blows air into the cooling chamber 600 to achieve gas cooling and heat dissipation of the laser 102 in the cooling chamber 600.

[0061] Therefore, in the steam turbine blade repair device provided by the embodiment of the present invention, the first piston plate 410 in the working chamber 400 reciprocates to accelerate the blowing of air from the first cavity 420 to the cooling chamber 600, thereby achieving gas cooling and heat dissipation of the laser 102 in the cooling chamber 600.

[0062] See attached Figure 1 and Figure 2 In the embodiment of the present invention, a partition box 510 is fixedly provided in the coolant tank 500. The partition box 510 is close to the liquid return port 502. The top plate 520 of the partition box 510 has a notch 521. A second piston plate 530 is provided in the partition box 510. The second piston plate 530 divides the partition box 510 into a first air chamber 540 and a second air chamber 550. Compared with the second air chamber 550, the first air chamber 540 is closer to the liquid return port 502. The second piston plate 530 includes a flat portion 531 and a U-shaped portion 530 connected to the flat portion 531. 32, the opening of the U-shaped portion 532 faces the second air cavity 550, and the U-shaped portion 532 is sealed and slidably connected to the notch 521; the first air cavity 540 is connected to the external atmospheric pressure, and the second air cavity 550 is respectively connected to the second cavity 430 and the external atmospheric pressure, and a fourth return spring 570 is provided in the split box 510, one end of the fourth return spring 570 is fixed to the inner wall of the split box 510, and the other end is fixed to the second piston plate 530, and always has a tendency to drive the second piston plate 530 to move toward the second air cavity 550.

[0063] It should be noted that, during the rotation of the distal edge of the second cam 422 toward the first piston plate 410, the outer edge of the second cam 422 pushes the first piston plate 410 toward the direction away from the cam or the shaft 421. At the same time, the third return spring 440 in the working chamber 400 further stores elastic potential energy. At this time, the first cavity 420 inhales air from the outside, and the second cavity 430 blows air into the second air cavity 550, causing the second piston plate 530 to move toward the direction away from the bottom wall of the second air cavity 550. At the same time, the fourth return spring 570 in the partition box 510 further stores elastic potential energy, and the U-shaped portion 532 of the second piston plate 530 cools and dissipates heat for the returning coolant.

[0064] During the process of the distal edge of the second cam 422 rotating in the direction away from the first piston plate 410, the third return spring 440 in the working chamber 400 releases elastic potential energy, pushing the first piston plate 410 to move toward the cam or shaft 421. At this time, the second air chamber 550 is not connected to the second cavity 430, and the second air chamber 550 is connected to the external atmospheric pressure. The fourth return spring 570 in the dividing box 510 releases elastic potential energy, driving the second piston plate 530 to move toward the bottom wall of the second air chamber 550; the second cavity 430 inhales air from the outside, and the first cavity 420 blows air into the cooling chamber 600, thereby realizing gas cooling and heat dissipation of the cooling chamber 600.

[0065] Therefore, the turbine blade repair device provided by an embodiment of the present invention, under the joint action of the second cam 422 and the third return spring 440 in the working chamber 400, causes the first piston plate 410 inside the working chamber 400 to reciprocate, thereby accelerating the air flow in the second cavity 430 and the second air cavity 550. The second piston plate 530 reciprocates in the dividing box 510 provided near the return port, and the U-shaped portion 532 of the second piston plate 530 cools and dissipates the returning coolant, thereby improving the cooling effect of the coolant on the components to be cooled.

[0066] See attached Figure 1 In the embodiment of the present invention, the cooling cavity 600 has a plurality of heat dissipation holes 604, which are arranged at intervals.

[0067] See attached Figure 2 In this embodiment of the present invention, the top end of the U-shaped portion 532 is fixedly connected to the third stopper 560, which is capable of abutting against the top plate 520. This arrangement limits the second piston plate 530, preventing the U-shaped portion 532 from disengaging from the notch 521, thereby allowing the coolant tank 500 and the partition tank 510 to communicate with each other.

[0068] In one embodiment of the present invention, the third limiting portion 560 is a sheet-like structure, and the width of the third limiting portion 560 is greater than the width of the notch 521 .

[0069] In another embodiment of the present invention, the third limiting portion 560 is a U-shaped structure, which includes a limiting plate and a folded edge. The folded edge extends along the surface of the limiting plate and the extension direction is toward the top plate 520 of the dividing box 510. The folded edge can abut against the top plate 520.

[0070] See attached Figure 3 In the embodiment of the present invention, the repair device includes: a first vent 423, a second vent 431, a third vent 433, a fourth vent 551, a fifth vent 552, a sixth vent 425, and a seventh vent 605; the first vent 423 and the sixth vent 425 are provided on the wall of the first cavity 420; the second vent 431 and the third vent 433 are provided on the wall of the second cavity 430; the fourth vent 551 and the fifth vent 552 are provided on the wall of the second cavity 430; It is arranged on the cavity wall of the second air cavity 550; the seventh vent 605 is arranged on the cavity wall of the cooling cavity 600; wherein, the first vent 423, the second vent 431 and the fifth vent 552 are respectively connected to the external atmospheric pressure, the first vent pipe 434 is connected between the third vent 433 and the fourth vent 551, the second vent pipe 427 is connected between the sixth vent 425 and the seventh vent 605, and the fifth vent 552 is connected to the external atmospheric pressure through the third vent pipe 554.

[0071] See attached Figure 3 In this embodiment of the present invention, the first air vent 423 is provided with a first solenoid valve 424; the second air vent 431 is provided with a second solenoid valve 432; the first air pipe 434 is provided with a third solenoid valve 435; the fifth air vent 552 is provided with a fourth solenoid valve 553; the second air pipe 427 is provided with a fifth solenoid valve 426; the first solenoid valve 424, the second solenoid valve 432, the third solenoid valve 435, the fourth solenoid valve 553, and the fifth solenoid valve 426 are configured as follows: if the distal edge of the second cam 422 rotates toward the direction close to the first piston plate 410, the first solenoid valve 424 and the third solenoid valve 435 are all opened, and the second solenoid valve 432, the fourth solenoid valve 553, and the fifth solenoid valve 426 are all closed; if the distal edge of the second cam 422 rotates toward the direction away from the first piston plate 410, the first solenoid valve 424, the third solenoid valve 435 are all closed, and the second solenoid valve 432, the fourth solenoid valve 553, and the fifth solenoid valve 426 are all opened.

[0072] In the embodiment of the present invention, the repair device further includes a controller 700 , and the first solenoid valve 424 , the second solenoid valve 432 , the third solenoid valve 435 , the fourth solenoid valve 553 and the fifth solenoid valve 426 are all electrically connected to the controller 700 .

[0073] See attached Figure 2 In this embodiment of the present invention, there are multiple notches 521, spaced apart along the length of the top plate 520. There are also multiple flat portions 531 and multiple U-shaped portions 532, alternating between the flat portions 531 and the U-shaped portions 532. This arrangement of multiple notches 521 and multiple U-shaped portions 532 increases the contact area between the second piston plate 530 and the coolant at the return port, dividing the returning coolant into multiple segments for cooling and heat dissipation, and improving the cooling efficiency of the returning coolant.

[0074] See attached Figure 4 and Figure 5In the embodiment of the present invention, the engaging housing 210 has a partition, which divides the engaging housing 210 into a first cavity 230 and a second cavity 240. The second cavity 240 is located above the first cavity 230. The movable member 220 includes a movable sheet 221, which is disposed in the second cavity 240. The touch portion 222 is a columnar structure. The touch portion 222 extends along the upper surface of the movable sheet 221 and protrudes from the upper surface of the movable sheet 221. The touch portion 222 is slidably connected to the engaging housing 210, and the top end of the touch portion 222 extends out of the engaging housing. The upper end surface of the shell 210 can be in contact with the laser gun 101; the blocking portion 223 is a plate-shaped structure, extending along the lower surface of the movable piece 221 and protruding from the lower surface of the movable piece 221 and extending out of the lower surface of the second cavity 240 and slidingly connected to the opening of the first cavity 230; one end of the first return spring 241 located in the engaging shell 210 is connected to the cavity wall of the second cavity 240, and the other end is connected to the movable piece 221, and always has a movement tendency to drive the blocking portion 223 away from the bottom wall of the first cavity 230.

[0075] Specifically, if the laser gun 101 is in an inoperative state, the laser gun 101 abuts against the trigger portion 222. Under the action of gravity of the laser gun 101, the trigger portion 222 drives the movable piece 221 and the blocking portion 223 to move along the height direction of the first cavity 230. When the blocking portion 223 abuts against the bottom end surface of the first cavity 230, the first cavity 230 is divided into cavity A and cavity B, so that the first air hole 231 of cavity A and the third air hole 341 of the second cavity 340 are isolated from the second air hole of cavity B. The piston 320 stops, and the first cam 331 stops. When the laser gun 101 is in working condition and the laser gun 101 does not abut against the trigger portion 222, the first return spring 241 drives the blocking portion 223 to move along the bottom wall away from the first cavity 230, so that the first air hole 231 of cavity A and the third air hole 341 of the second cavity 340 are connected to the second air hole of cavity B, the piston 320 reciprocates, the first cam 331 rotates, and the rotating shaft 332 rotates along with the winding drum 110, so that the winding drum 110 can rewind and unwind the line.

[0076] See attached Figure 4 In this embodiment of the present invention, the engaging assembly 200 further includes a plurality of clamping blocks 201 disposed on the engaging housing 210. The clamping blocks 201 are used to clamp the laser gun 101. Specifically, the clamping blocks 201 are arranged parallel to each other along the length of the laser gun 101 and opposite to each other along the width of the laser gun 101. The laser gun 101 is disposed between the clamping blocks 201.

[0077] See attached Figure 4 In the embodiment of the present invention, a flexible pad 202 is provided at the contact portion between the clamping block 201 and the laser gun 101 .

[0078] See attached Figure 6 In an embodiment of the present invention, the winding drum 110 includes a drum body 120, and a first limiting portion 130 and a second limiting portion 140 respectively fixed at both ends of the drum body 120, the first limiting portion 130 and the second limiting portion 140 both extend radially outward and protrude from the outer peripheral wall of the drum body 120, and the first limiting portion 130 is pivotally connected to the box body 10; a wire groove 121 is provided at the central axis of the drum body 120, and the wire groove 121 axially penetrates the first limiting portion 130 and the second limiting portion 140; the second limiting portion 140 is provided with a wire hole 141, and the axis of the wire hole 141 is not colinear with the axis of the wire groove 121; wherein the axial direction is the axial direction of the drum body 120.

[0079] It should be noted that the cable 103 is wound around the barrel 120 , and the first limiting portion 130 and the second limiting portion 140 are provided to prevent the cable 103 from escaping from both ends of the barrel 120 . When the winding drum 110 reels in and releases the cable 103, the winding drum 110 rotates around its central axis. The wire groove 121 is arranged at the central axis of the barrel 120 and passes through the first limiting portion 130 and the second limiting portion 140. The cable 103 passes through the wire groove 121. With this arrangement, when the winding drum 110 rotates, the cable 103 located at the central axis of the barrel 120 does not rotate with it, preventing the cables 103 outside the two end surfaces of the winding drum 110 from twisting and entangled when the winding drum 110 rotates; the wire hole 141 is arranged at the second limiting portion 140, for guiding the cable 103 to wind around the outer peripheral wall of the barrel 120. The wire groove 121 and the wire hole 141 cooperate with each other to prevent the cables 103 from being scattered and difficult to store and to avoid the phenomenon of the cables 103 being twisted and entangled.

[0080] See attached Figure 6 In a specific embodiment of the present invention, the wire hole 141 is disposed near an edge of the second limiting portion 140 .

[0081] In an embodiment of the present invention, the method of using the reel 110 is to remove the cable 103 from the laser 102 and the laser gun 101, and pass the cable 103 into the wire groove 121 from the first limiting portion 130, pass out of the wire groove 121 from the second limiting portion 140, and then pass into the wire hole 141. After passing through the wire hole 141, the cable 103 is neatly wound along the barrel body 120 to avoid the cable 103 being scattered and difficult to store and the cable 103 being twisted and entangled.

[0082] See attached Figure 7In this embodiment of the present invention, the sidewall of the wire groove 121 has a first opening 122, which radially extends outward and axially penetrates the barrel 120, the first limiting portion 130, and the second limiting portion 140; the sidewall of the wire hole 141 has a second opening 142, which radially extends outward and axially penetrates the corresponding first limiting portion 130 or second limiting portion 140; wherein the radial direction is the radial direction of the barrel 120, and the first opening 122 and the second opening 142 are spaced apart along the circumference of the barrel 120. With this arrangement, before the cable 103 needs to be wound, the cable 103 is introduced into the wire groove 121 from the first opening 122, and then into the wire hole 141 from the second opening 142, and then neatly wound along the barrel 120, completing the initial winding of the cable 103. The first opening 122 and the second opening 142 are arranged at intervals along the circumference of the barrel 120, so that the wire groove 121 and the wire hole 141 can better cooperate with each other, so that the cable 103 can be stored in the barrel 120 without being removed from the laser 102 and the laser gun 101, which makes it more convenient for the cable 103 winding device to retract and release the cable 103.

[0083] See attached Figure 6 In one embodiment of the present invention, an annular groove 131 is provided on the bottom end surface of the first limiting portion 130. The annular groove 131 is coaxial with the barrel 120, and the opening of the annular groove 131 faces and passes through the bottom end surface of the first limiting portion 130; the box body 10 is fixedly provided with a slide rail 104 that is slidably connected to the annular groove 131, and the guide portion of the slide rail 104 is adapted to and slidably connected to the annular groove 131, and the fixed portion of the slide rail 104 extends to the outside of the annular groove 131 and protrudes from the bottom end surface of the first limiting portion 130.

[0084] In another embodiment of the present invention, the box body 10 is fixedly provided with an annular slide groove 131, the opening of the annular slide groove 131 faces the first limiting portion 130, and the bottom end surface of the first limiting portion 130 is provided with a slide rail 104 that is slidably connected to the annular slide groove 131. The slide rail 104 is coaxial with the cylinder body 120, and the guide portion of the slide rail 104 is adapted to and slidably connected to the annular slide groove 131, and the fixed portion of the slide rail 104 extends to the outside of the annular slide groove 131.

[0085] The steam turbine blade repair device provided in the embodiment of the present invention provides guidance and support for the rotation of the winding drum 110 by setting a slidingly connected slide rail 104 and an annular slide groove 131, so that the winding drum 110 can flexibly retract and release the cable 103.

[0086] See attached Figure 6 In one embodiment of the present invention, the slide rail 104 includes a plurality of sliders. With respect to the axial direction, the plurality of sliders are spaced apart along the circumferential direction and are respectively slidably connected to the annular slide groove 131 .

[0087] See attached Figure 6 In a specific embodiment of the present invention, the annular groove 131 is a T-shaped groove, which is provided at the bottom end surface of the first limiting portion 130; the slider is a T-shaped slider, which is evenly spaced around the circumference, with its large end portion slidingly connected to the T-shaped groove, and its small end portion located at the opening of the T-shaped groove and extending to the outside of the T-shaped groove, and protruding from the bottom end surface of the first limiting portion 130; or, the annular groove 131 is provided in the box body 10, and the large end portion of the T-shaped slider is slidingly connected to the T-shaped groove, and the small end portion is located at the opening of the T-shaped groove and extending to the outside of the T-shaped groove, and protruding from the outside of the T-shaped groove. With such a configuration, the T-shaped groove and the T-shaped slider, which slide in cooperation with each other, rotate the reel 110, and the T-shaped slider will not fall out of the T-shaped groove, making the reeling and releasing of the cable 103 more flexible and stable.

[0088] In another embodiment of the present invention, the slide rail 104 is an annular slide rail 104, the annular slide rail 104 includes at least two arcuate slide rails 104, and the arcuate slide rails 104 are combined to form a closed circular ring structure; the annular slide groove 131 includes at least two arcuate slide grooves, and the arcuate slide grooves are combined to form a closed circular ring structure, wherein the arcuate slide rail 104 is slidably connected to the arcuate slide groove, and the two correspond one to one.

[0089] See attached Figure 6 In an embodiment of the present invention, the winding assembly 100 further includes a handle 143, which is disposed at an edge close to the second limiting portion 140. The handle 143 is used to drive the winding drum 110 to rotate relative to the box body 10, and manually drive the winding drum 110 to retract and release the cable 103, making the retraction and release of the cable 103 more flexible.

[0090] See attached Figure 7 In a specific embodiment of the present invention, the handle 143 is spaced apart from the first opening 122 and the second opening 142 .

[0091] See attached Figure 6 In the embodiment of the present invention, the handle 143 is provided with a flexible sleeve 144, which can be a rubber sleeve or a silicone sleeve, etc., to improve the comfort of operation.

[0092] See attached Figure 6 In this embodiment of the present invention, a ring gear 132 is provided around the circumference of the first limiting portion 130. A first gear 333 is fixedly connected to the rotating shaft 332. The first gear 333 engages with a second gear 334. The second gear 334 is pivotally connected to the first cavity 420 and engages with the ring gear 132. This arrangement achieves a transmission connection between the winding drum 110 and the limiting assembly 300.

[0093] See attached Figure 1 In the embodiment of the present invention, the repair device includes a plurality of universal wheels 105 installed at the bottom of the box body 10. Such an arrangement facilitates the movement of the repair device and saves labor costs.

[0094] See attached Figure 5 In one embodiment of the present invention, the first return spring 241 located in the engaging housing 210 is a compression spring, one end of which is fixed to the bottom wall of the second cavity 240, and the other end of which is fixed to the lower surface of the movable piece 221. Specifically, if the laser gun 101 is not in operation, the laser gun 101 abuts against the triggering portion 222. Under the action of the gravity of the laser gun 101, the triggering portion 222 drives the movable piece 221 and the blocking portion 223 to move along the height direction of the first cavity 230. At the same time, the compression spring is further compressed, and when the blocking portion 223 abuts against the bottom end surface of the first cavity 230, the first cavity 230 is divided into cavity A and cavity B, so that the first air hole 231 of cavity A and the third air hole 341 of the second cavity 340 are isolated from the second air hole of cavity B. The piston 320 stops, and the first cam 3 31 stops rotating, and the rotating shaft 332 blocks the rotation of the take-up drum 110, so that the take-up drum 110 stops reeling in and unreeling; if the laser gun 101 is in working state and the laser gun 101 does not abut against the touch portion 222, the compression spring releases its elasticity to push the movable sheet 221 to drive the blocking portion 223 to move along the bottom wall away from the first cavity 230, so that the first air hole 231 of cavity A and the third air hole 341 of the second chamber 340 are both connected to the second air hole of cavity B, the piston 320 reciprocates, the first cam 331 rotates, and the rotating shaft 332 rotates along with the take-up drum 110, so that the take-up drum 110 can reel in and unreel.

[0095] In another embodiment, the first return spring 241 is a tension spring, one end of which is fixed to the top wall of the second cavity 240, and the other end is fixed to the upper surface of the movable piece 221. Specifically, if the laser gun 101 is not in operation, the laser gun 101 abuts against the trigger portion 222. Under the action of the gravity of the laser gun 101, the trigger portion 222 drives the movable piece 221 and the blocking portion 223 to move along the height direction of the first cavity 230. At the same time, the tension spring is further stretched, and when the blocking portion 223 abuts against the bottom end surface of the first cavity 230, the first cavity 230 is divided into cavity A and cavity B, so that the first air hole 231 of cavity A and the third air hole 341 of the second cavity 340 are isolated from the second air hole of cavity B, the piston 320 stops, and the first cam 3 31 stops rotating, and the rotating shaft 332 blocks the rotation of the take-up drum 110, so that the take-up drum 110 stops reeling in and unreeling; if the laser gun 101 is in working state and the laser gun 101 does not abut against the touch portion 222, the tension spring releases its elasticity to push the movable sheet 221 to drive the blocking portion 223 to move along the bottom wall away from the first cavity 230, so that the first air hole 231 of cavity A and the third air hole 341 of the second chamber 340 are connected to the second air hole of cavity B, the piston 320 reciprocates, the first cam 331 rotates, and the rotating shaft 332 rotates along with the take-up drum 110, so that the take-up drum 110 can reel in and unreel.

[0096] See attached Figure 8 In one embodiment of the present invention, the second return spring 342 is located in the chamber of the limit box 310. In one embodiment, the second return spring 342 is a compression spring, which is disposed in the second chamber 340. One end of the compression spring is fixedly connected to the piston 320, and the other end is fixedly connected to the inner wall of the second chamber 340. Specifically, during the rotation of the first cam 331, when the distal edge of the first cam 331 rotates toward the piston 320, the distal edge of the first cam 331 pushes the piston 320 away from the first cam 331. At the same time, the compression spring is further compressed. When the distal edge of the first cam 331 rotates away from the piston 320, the compression spring releases its elastic potential energy to push the piston 320 toward the first cam 331. This cycle repeats over and over again. Under the combined action of the first cam 331 and the compression spring, the piston 320 achieves reciprocating motion in the chamber of the limit box 310.

[0097] In another embodiment, the second return spring 342 is a tension spring disposed in the first chamber 330, with one end of the tension spring fixedly connected to the piston 320 and the other end fixedly connected to the inner wall of the first chamber 330. Specifically, during the rotation of the first cam 331, when the distal edge of the first cam 331 rotates toward the piston 320, the distal edge of the first cam 331 pushes the piston 320 away from the cam, and the tension spring is further stretched. When the distal end of the first cam 331 rotates away from the piston 320, the tension spring releases its elastic potential energy to push the piston 320 toward the cam. This cycle repeats, and the piston 320 achieves reciprocating motion within the chamber of the limit box 310 under the combined action of the first cam 331 and the tension spring.

[0098] See attached Figure 1 In one embodiment of the present invention, the third return spring 440 located in the working chamber 400 can be a tension spring located in the first chamber 420, with one end of the tension spring connected to the first piston plate 410 and the other end connected to the wall of the first chamber 420. It should be noted that during the rotation of the second cam 422, when the distal edge of the second cam 422 rotates toward the first piston plate 410, the outer edge of the second cam 422 pushes the first piston plate 410 away from the second cam 422 or the shaft 421, and the tension spring is further stretched. When the distal edge of the second cam 422 rotates away from the first piston plate 410, the tension spring releases its elastic potential energy, pushing the first piston plate 410 toward the cam or the shaft 421. This cycle repeats itself, and the first piston plate 410, under the combined action of the second cam 422 and the tension spring, achieves reciprocating motion within the second chamber 430.

[0099] In another embodiment, the third return spring 440 may be a compression spring located in the second cavity 430, with one end of the compression spring connected to the first piston plate 410 and the other end connected to the cavity wall of the second cavity 430. It should be noted that during the rotation of the second cam 422, when the distal edge of the second cam 422 rotates toward the first piston plate 410, the outer edge of the second cam 422 pushes the first piston plate 410 away from the second cam 422 or the shaft 421, and the compression spring is further compressed. When the distal edge of the second cam 422 rotates away from the first piston plate 410, the compression spring releases its elastic potential energy, pushing the first piston plate 410 toward the second cam 422 or the shaft 421. This cycle repeats itself, and the first piston plate 410, under the combined action of the second cam 422 and the compression spring, achieves reciprocating motion within the second cavity 430.

[0100] See attached Figure 2 In one embodiment of the present invention, the fourth return spring 570 located in the partition box 510 can be a tension spring located in the second air cavity 550. One end of the tension spring is fixed to the cavity wall of the second air cavity 550, and the other end is fixed to the second piston plate 530. It should be noted that the first cavity 420 draws air from the outside, and the second cavity 430 blows air into the second air cavity 550, causing the second piston plate 530 to move away from the bottom wall of the second air cavity 550, while the tension spring is further stretched. When the second cavity 430 and the second air cavity 550 are disconnected, the second air cavity 550 is connected to the outside atmospheric pressure, and the tension spring releases its elastic potential energy, driving the second piston plate 530 to move toward the bottom wall of the second air cavity 550.

[0101] In another embodiment, the fourth return spring 570 may be a compression spring located in the first air cavity 540, with one end of the compression spring fixedly connected to the cavity wall of the first air cavity 540 and the other end fixedly connected to the second piston plate 530. It should be noted that the first cavity 420 draws air from the outside, and the second cavity 430 blows air into the second air cavity 550, causing the second piston plate 530 to move away from the bottom wall of the second air cavity 550 and further compressing the compression spring. When the second cavity 430 and the second air cavity 550 are disconnected, the second air cavity 550 is connected to the outside atmospheric pressure, and the compression spring releases its elastic potential energy, driving the second piston plate 530 to move toward the bottom wall of the second air cavity 550.

[0102] The working principle of the embodiment of the present invention is as follows:

[0103] Winding principle:

[0104] When the laser gun 101 needs to stop working, the laser gun 101 is clamped on the clamping assembly 200, and the laser gun 101 abuts against the trigger portion 222. Under the action of the gravity of the laser gun 101, the trigger portion 222 drives the movable piece 221 and the blocking portion 223 to move along the height direction of the first cavity 230. The first return spring 241 located on the clamping housing 210 is further compressed. When the blocking portion 223 abuts against the bottom end surface of the first cavity 230, the first cavity 230 is divided into cavity A and cavity B, so that the third air hole 341 of the second cavity 340 is isolated from the second air hole in cavity B that is connected to the external atmospheric pressure through the first air hole 231 in cavity A. The second cavity 240 becomes a closed space, the piston 320 stops, the first cam 331 stops rotating, and the rotating shaft 332 blocks the rotation of the winding drum 110, thereby limiting the winding drum 110 and causing the winding drum 110 to stop reeling in and unreeling.

[0105] If the laser gun 101 needs to work, the laser gun 101 is removed from the engaging assembly 200, and the laser gun 101 does not abut against the trigger portion 222. The first return spring 241 located in the engaging housing 210 releases its elastic potential energy, driving the blocking portion 223 to move along the bottom wall away from the first cavity 230, so that the third air hole 341 of the second chamber 340 is connected to the second air hole in cavity B that is connected to the external atmospheric pressure through the first air hole 231 of cavity A. The piston 320 reciprocates and the first cam 331 rotates. When the distal edge of the first cam 331 rotates toward the direction close to the piston 320, the first cam 331 is rotated. The distal edge of the wheel 331 pushes the piston 320 away from the first cam 331. Simultaneously, the second return spring 342 within the cavity of the limit box 310 further stores elastic potential energy. When the distal edge of the first cam 331 rotates away from the piston 320, the second return spring 342 within the cavity of the limit box 310 releases this elastic potential energy, pushing the piston 320 toward the first cam 331. This cycle repeats, and the piston 320, driven by the combined action of the first cam 331 and the second return spring 342, reciprocates within the cavity of the limit box 310. The rotating shaft 332 rotates with the take-up drum 110, allowing the take-up drum 110 to reel in and unreel the wire.

[0106] Cooling principle:

[0107] If the motor drives the distal edge of the second cam 422 fixed to the shaft 421 to rotate in the direction close to the first piston plate 410, the outer edge of the second cam 422 will push the first piston plate 410 to move away from the second cam 422 or the shaft 421, and at the same time, the third return spring 440 in the working chamber 400 further stores elastic potential energy. At this time, the first solenoid valve 424 provided in the first vent hole 423 and the first vent pipe 424 provided in communication with the third vent hole 433 and the fourth vent hole 551 are The third solenoid valve 435 of 434 is opened, and the second solenoid valve 432 and the fourth solenoid valve 553 are closed. That is, the first cavity 420 draws air from the outside through the first vent hole 423, and the second cavity 430 blows air into the second air cavity 550 through the first vent pipe 434, causing the second piston plate 530 to move away from the bottom wall of the second air cavity 550. The U-shaped portion 532 of the second piston plate 530 cools and dissipates the return coolant. At the same time, the fourth return spring 570 in the partition box 510 further stores elastic potential energy.

[0108] If the motor drives the distal edge of the second cam 422 fixed to the shaft 421 to rotate in a direction away from the first piston plate 410, the outer edge of the second cam 422 will push the first piston plate 410 to move toward the second cam 422 or the shaft 421, and at the same time, the third return spring 440 in the working chamber 400 releases the elastic potential energy. At this time, the first solenoid valve 424 provided in the first vent hole 423 and the first vent pipe 434 provided in communication with the third vent hole 433 and the fourth vent hole 551 are The third solenoid valve 435 is closed, and the second solenoid valve 432 and the fourth solenoid valve 553 are opened, that is, the second cavity 430 inhales air from the outside through the second vent hole 431, and the first cavity 420 blows air into the cooling cavity 600 through the second vent pipe 427, and the gas cools the laser 102 in the cooling cavity 600; the second air cavity 550 exhausts air to the outside through the fifth vent hole 552, and the fourth return spring 570 in the dividing cavity releases elastic potential energy to drive the second piston plate 530 to move toward the bottom wall of the second air cavity 550.

[0109] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A steam turbine blade repair device, characterized in that: include: Box (10); A winding assembly (100) includes a winding drum (110), the winding drum (110) being rotatably disposed on the housing (10) and used for winding a cable (103), the cable (103) being used for connecting a laser gun (101) and a laser (102) located in the housing (10); The engaging assembly (200) comprises an engaging shell (210) fixed to the housing (10) and a movable member (220) slidably connected to the engaging shell (210), wherein the two ends of the movable member (220) respectively comprise a touch portion (222) and a blocking portion (223), wherein the touch portion (222) and the blocking portion (223) are fixed relative to each other, wherein the top end of the touch portion (222) is located above the engaging shell (210) and can abut against the laser gun (101), wherein the engaging shell (210) comprises a first cavity (230) having an opening, wherein the blocking portion (223) is provided at a position corresponding to the first cavity (230) and the first cavity (230) having an opening. The portion (223) is sealed and slidably connected to the opening, and is capable of dividing the first cavity (230) into cavity A and cavity B, wherein cavity A has a first air hole (231), and cavity B has a second air hole, and the second air hole is connected to the external atmospheric pressure; the engaging shell (210) is provided with a first return spring (241), one end of the first return spring (241) is fixed to the engaging shell (210), and the other end is fixed to the movable member (220), and the first return spring (241) always has a movement tendency of driving the blocking portion (223) away from the bottom wall of the first cavity (230); The limiting assembly (300) comprises a limiting box (310) fixedly mounted on the box body (10), wherein the limiting box (310) has a chamber, wherein a piston (320) is sealed and slidably connected in the chamber, and the chamber is divided into a first chamber (330) and a second chamber (340), wherein a first cam (331) is provided in the first chamber (330), wherein the first cam (331) is fixedly connected to a rotating shaft (332), wherein the rotating shaft (332) is pivotally connected to the first chamber (330) and is transmission-connected to the winding drum (1 10); A second return spring (342) is provided in the first chamber (330) or the second chamber (340); one end of the second return spring (342) is fixed to the chamber wall of the chamber, and the other end is fixed to the piston (320), and always has a tendency to drive the piston (320) plate toward the first cam (331); the second chamber (340) has a third air hole (341), and an air pipe (203) is connected between the third air hole (341) and the first air hole (231); A cooling liquid tank (500) is provided in the tank body (10) and has a first liquid outlet (501) and a liquid return port (502); and A cooling chamber (600) is provided in the housing (10), the cooling chamber (600) is communicated with the external atmospheric pressure, the laser (102) is provided in the cooling chamber (600), the cooling chamber (600) has a liquid inlet (601) and a second liquid outlet (602), a liquid outlet pipe (503) is communicated between the first liquid outlet (501) and the liquid inlet (601), and a liquid return pipe (504) is communicated between the second liquid outlet (602) and the liquid return port (502).

2. The steam turbine blade repair device according to claim 1, characterized in that: The repair device further comprises a working chamber (400) which is arranged in the housing (10), wherein a first piston plate (410) is sealed and slidably connected in the working chamber (400), and the first piston plate (410) divides the working chamber (400) into a sealed first chamber (420) and a second chamber (430); a second cam (422) is provided in the first chamber (420), and the second cam (422) is fixed to a shaft (421), and the shaft (421) is pivotally connected to the first chamber (420) and is transmission-connected to a power assembly; a third return spring (440) is provided in the working chamber (400), one end of the third return spring (440) is connected to the chamber wall of the working chamber (400), and the other end is connected to the first piston plate (410), and the third return spring always has a tendency to drive the first piston plate (410) toward the second cam (422); the cooling chamber (600) is communicated with the first chamber (420).

3. The steam turbine blade repair device according to claim 2, characterized in that: The coolant tank (500) is fixed with a split box (510), the split box (510) is close to the liquid return port (502), the top plate (520) of the split box (510) has a notch (521), and the split box (510) is provided with a second piston plate (530), the second piston plate (530) divides the split box (510) into a first air cavity (540) and a second air cavity (550), relative to the second air cavity (550), the first air cavity (540) is closer to the liquid return port (502), the second piston plate (530) includes a flat portion (531) and a U-shaped The U-shaped portion (532) has an opening facing the second air cavity (550), and the U-shaped portion (532) is sealed and slidably connected to the opening; the first air cavity (540) is communicated with the external atmospheric pressure, and the second air cavity (550) is respectively communicated with the second cavity (430) and the external atmospheric pressure, and a fourth return spring (570) is provided in the split box (510), one end of the fourth return spring (570) is fixed to the inner wall of the split box (510), and the other end is fixed to the second piston plate (530), and always has a tendency to drive the second piston plate (530) to move toward the second air cavity (550).

4. The steam turbine blade repair device according to claim 3, characterized in that: The repair device comprises: a first vent (423), a second vent (431), a third vent (433), a fourth vent (551), a fifth vent (552), a sixth vent (425), and a seventh vent (605); The first vent hole (423) and the sixth vent hole (425) are provided on the cavity wall of the first cavity (420); The second vent hole (431) and the third vent hole (433) are respectively provided on the cavity wall of the second cavity (430); The fourth vent hole (551) and the fifth vent hole (552) are respectively provided on the cavity wall of the second air cavity (550); The seventh vent hole (605) is provided on the cavity wall of the cooling cavity (600); The first vent hole (423), the second vent hole (431) and the fifth vent hole (552) are respectively connected to the external atmospheric pressure; a first vent pipe (434) is connected between the third vent hole (433) and the fourth vent hole (551); and a second vent pipe (427) is connected between the sixth vent hole (425) and the seventh vent hole (605).

5. The steam turbine blade repair device according to claim 4, characterized in that: The first vent hole (423) is provided with a first solenoid valve (424); the second vent hole (431) is provided with a second solenoid valve (432); the first vent pipe (434) is provided with a third solenoid valve (435); the fifth vent hole (552) is provided with a fourth solenoid valve (553); the second vent pipe (427) is provided with a fifth solenoid valve (426); The first solenoid valve (424), the second solenoid valve (432), the third solenoid valve (435), the fourth solenoid valve (553), and the fifth solenoid valve (426) are configured as follows: if the distal edge of the cam rotates toward the direction approaching the first piston plate (410), the first solenoid valve (424) and the third solenoid valve (435) are both opened, and the second solenoid valve (432), the fourth solenoid valve (553), and the fifth solenoid valve (426) are all closed; if the distal edge of the cam rotates toward the direction away from the first piston plate (410), the first solenoid valve (424) and the third solenoid valve (435) are both closed, and the second solenoid valve (432), the fourth solenoid valve (553), and the fifth solenoid valve (426) are all opened.

6. The steam turbine blade repair device according to claim 5, characterized in that: The repair device further includes a controller (700), and the first solenoid valve (424), the second solenoid valve (432), the third solenoid valve (435), the fourth solenoid valve (553) and the fifth solenoid valve (426) are all electrically connected to the controller (700).

7. The steam turbine blade repair device according to claim 3, characterized in that: There are a plurality of notches (521), and the plurality of notches (521) are arranged at intervals along the length direction of the top plate (520). There are a plurality of flat portions (531) and a plurality of U-shaped portions (532), and the plurality of flat portions (531) and the U-shaped portions (532) are arranged alternately.

8. The steam turbine blade repair device according to any one of claims 1 to 7, characterized in that: The snap-fit ​​shell (210) has a partition, which divides the snap-fit ​​shell (210) into the first cavity (230) and the second cavity (240), the second cavity (240) being located above the first cavity (230), the movable member (220) including a movable sheet (221), the movable sheet (221) being located in the second cavity (240), the touch portion (222) being a columnar structure, the touch portion (222) extending along the upper surface of the movable sheet (221) and protruding from the upper surface of the movable sheet (221), the touch portion (222) being slidably connected to the snap-fit ​​shell (210), the top end of the touch portion (222) extending out of the The upper end surface of the engaging shell (210) is engaged with the laser gun (101); the blocking portion (223) is a plate-shaped structure, extending along the lower surface of the movable sheet (221) and protruding from the lower surface of the movable sheet (221) and extending out of the lower surface of the second cavity (240) to be slidably connected to the opening of the first cavity (230); one end of the first return spring (241) located in the engaging shell (210) is connected to the cavity wall of the second cavity (240), and the other end is connected to the movable sheet (221), and always has a movement tendency of driving the blocking portion (223) away from the bottom wall of the first cavity (230).

9. The steam turbine blade repair device according to any one of claims 1 to 7, characterized in that: The winding drum (110) includes a drum body (120), and a first limiting portion (130) and a second limiting portion (140) respectively fixed to both ends of the drum body (120), wherein the first limiting portion (130) and the second limiting portion (140) both extend radially outward and protrude from the outer peripheral wall of the drum body (120), and the first limiting portion (130) is pivotally connected to the box body (10); A wire groove (121) is provided at the central axis of the barrel (120), and the wire groove (121) axially penetrates the first limiting portion (130) and the second limiting portion (140); The second limiting portion (140) is provided with a wire hole (141), and the axis of the wire hole (141) is not collinear with the axis of the wire groove (121); Wherein, the axial direction is the axial direction of the barrel (120).

10. The steam turbine blade repair device according to claim 1, characterized in that: The repair device comprises a plurality of universal wheels (105) mounted on the bottom of the box (10).

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