Hydropower station unit flow passage component steel plate repairing device

Abstract

The invention discloses a hydropower station unit flow passage component steel plate repairing device, and belongs to the technical field of water conservancy equipment repairing. A guide structure is arranged between the movable part and the fixed part, and the guide structure can guide the transverse movement and the longitudinal movement of the movable part; the temperature transmission assembly comprises a temperature sensing structure and a conduction structure, the temperature transmission assembly is used for sensing the temperature around the welding head, and the temperature sensing structure drives the conduction structure according to temperature changes. The steel plate repairing assembly, the temperature transmission assembly and the guide structure are arranged, the covering range of protective gas can be automatically adjusted when the welding angle is changed, continuous changes of the welding angle can be adapted, the protective gas always and evenly covers the welding part, the defects of air holes, oxidation and the like are avoided, and the welding quality is improved. Further, a uniform and stable welding repair surface is formed on the repaired molten pool surface, and the quality of the steel plate repair surface is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy equipment repair, and specifically refers to a device for repairing steel plates of flow-through components of a hydropower station unit. Background Art

[0002] The flow-through components of hydropower station units are subjected to long-term impact of water flow, sediment wear, cavitation and other effects. The surface of the steel plate is prone to damage such as wear, corrosion, and cracks. These damages will not only affect the normal operation of the flow-through components and reduce the efficiency of the turbine, but may also cause unit failure due to steel plate rupture, leading to more serious safety hazards.

[0003] Traditional repair methods often rely on manual operation, and workers need to perform welding repairs in a complex environment, which is labor-intensive and inefficient. Moreover, during the welding process, due to the constant change of welding angle, it is difficult to ensure that the shielding gas always evenly covers the welding part, which easily causes defects such as pores and oxidation in the weld, ultimately affecting the quality of the repaired steel plate surface. Therefore, in order to be able to automatically adjust the coverage of the shielding gas when changing the welding angle, so that a stable shielding gas layer is formed on the repaired molten pool surface, the uniformity of the molten pool surface is ensured, and the quality of the steel plate repair of the flow-through components of the hydropower station unit is improved, a steel plate repair device for the flow-through components of the hydropower station unit is proposed. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a steel plate repair device for the flow-through components of a hydropower station unit. By setting a steel plate repair assembly, a temperature transmission component and a guide structure, the device can automatically adjust the coverage range of the protective gas when the welding angle is changed, thereby forming a stable protective gas layer on the repaired molten pool surface, forming a uniform and stable welding repair surface, which effectively solves the problem that when the current repair device is welding, it is difficult to ensure that the protective gas always evenly covers the welding part due to the constantly changing welding angle, which easily causes defects such as pores and oxidation in the weld, ultimately affecting the quality of the steel plate repair surface.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a device for repairing steel plates of flow-through components of a hydropower station unit, comprising:

[0006] A repair base and a mechanical arm, one end of the mechanical arm is mounted on the repair base;

[0007] A steel plate repair assembly, which is mounted on the other end of the mechanical arm, and includes:

[0008] The fixed part is fixedly mounted on the robot arm and is used to carry the welding equipment;

[0009] A moving part, wherein a guide structure is provided between the moving part and the fixed part, and the guide structure can provide guidance for the lateral and longitudinal movement of the moving part;

[0010] A temperature transmission assembly and a welding head, wherein the welding head is fixedly mounted on the fixed part, the temperature transmission assembly is used to sense the temperature around the welding head, the temperature transmission assembly comprises a temperature sensing structure and a conducting structure, the temperature sensing structure drives the conducting structure according to temperature changes, and the conducting structure is connected to the guide structure to drive the moving part to move on the fixed part;

[0011] The air jet head is fixedly mounted on the moving part and is used to introduce protective gas into the working part of the welding head.

[0012] Further, the temperature sensing structure includes a temperature sensing tube and a temperature sensing head, the temperature sensing tube is fixedly mounted on the moving part, the temperature sensing head is fixedly connected to the bottom of the temperature sensing tube, a temperature conducting rod is fixedly connected to the temperature sensing head, a liquid storage bin is provided inside the temperature sensing tube, and the temperature conducting rods are all arranged in the liquid storage bin;

[0013] The temperature sensing tube is slidably connected with a temperature sensing piston, and the temperature sensing piston is fixedly connected with a connecting rod.

[0014] Further, the conducting structure comprises a primary threaded rod and a secondary threaded rod, and the primary threaded rod and the secondary threaded rod are both rotatably connected to the moving part;

[0015] The first-level threaded rod is threadedly connected with a slider 1, and the slider 1 is fixedly connected to the connecting rod;

[0016] The transmission structure further comprises a hydraulic chamber fixedly mounted on the moving part, wherein a driving piston is slidably connected inside the hydraulic chamber;

[0017] The secondary threaded rod is threadedly connected with a second slider, and the second slider is fixedly connected to the driving piston.

[0018] Further, the guide structure includes a guide slider 1 and a guide slider 2, the bottom of the fixed part is fixedly connected with a guide rail 1, the guide slider 1 is slidably connected to the guide rail 1, the bottom of the fixed part is fixedly connected with a guide rail 2, and the guide slider 2 is slidably connected to the guide rail 2;

[0019] A hydraulic telescopic rod and a transverse telescopic rod are installed between the moving part and the guide slider 1, and a longitudinal telescopic rod is installed between the moving part and the guide slider 2;

[0020] The guide rail 1 and the guide rail 2 are arranged perpendicular to each other.

[0021] Furthermore, the guide slider 1 and the guide slider 2 are each provided with two groups, and the guide slider 1 and the guide slider 2 are respectively provided on both sides of the fixing part in a symmetrical arrangement;

[0022] The two groups of guide slide blocks one are adjacent to each other, and the two groups of guide slide blocks two are adjacent to each other.

[0023] Furthermore, the jet head is arranged obliquely relative to the axis of the moving part, and the air outlet of the jet head points in a direction close to the axis of the moving part;

[0024] The lower half of the temperature sensing tube is parallel to the jet head, and the temperature sensing head is fixedly connected to the bottom of the temperature sensing structure. The upper half of the temperature sensing tube is parallel to the axial direction of the moving part, and the temperature sensing piston is slidably connected in the upper half of the temperature sensing tube.

[0025] Furthermore, a connecting pipe is provided between the hydraulic tank and the liquid inlet of the hydraulic telescopic rod for connection.

[0026] Furthermore, the primary threaded rod and the slider 1 adopt non-self-locking threads, and the slider 1 drives the primary threaded rod to rotate when it moves;

[0027] The secondary threaded rod and the second slider adopt self-locking threads, and the second slider is driven to move when the secondary threaded rod rotates;

[0028] The thread rotation directions of the secondary threaded rod and the primary threaded rod are arranged in the same direction.

[0029] Furthermore, four groups of the air jets are arranged at the bottom of the moving part and are evenly distributed on the circumference of the bottom of the moving part.

[0030] The beneficial effects achieved by the present invention using the above structure are as follows:

[0031] (1) In order to solve the problem that the welding angle is constantly changing and it is difficult to ensure that the shielding gas always evenly covers the welding part, resulting in defects such as pores and oxidation in the weld, which ultimately affects the quality of the repaired surface of the steel plate, the present invention is provided with a steel plate repair assembly, a temperature transmission component and a guide structure, which can automatically adjust the coverage range of the shielding gas when the welding angle changes, thereby forming a stable shielding gas layer on the repaired molten pool surface, which is conducive to forming a uniform and stable welding repair surface, and effectively improves the molding quality of the repaired surface;

[0032] (2) When the welding angle changes and causes the shielding gas to shift, the high temperature generated by the welding head causes the temperature at the temperature sensing head to change, which is transmitted to the liquid in the liquid storage tank through the temperature conducting rod. The temperature sensing piston is pushed to move by the thermal expansion and contraction principle of the liquid, and the distance between the nozzle and the welding head is adjusted, so that the concentrated position of the shielding gas moves in the direction of the welding head shift, thereby achieving precise adjustment of the shielding gas coverage range, ensuring that the repair process is not affected by the change of the welding angle, effectively avoiding weld defects, and improving the repair quality;

[0033] (3) The steel plate repair assembly includes a fixed part and a movable part, and the guide structure provides two mutually perpendicular guides for the movable part, so that the movable part can move to any position on the fixed part, thereby enabling the coverage range of the nozzle to move on the surface to be repaired. The nozzle can move along with the deflection of the welding head in any direction, and can adapt to complex working surfaces;

[0034] (4) In addition, the temperature sensing structure drives the conduction structure to move according to the temperature in different directions of the welding head, realizing the adaptive linkage between temperature change and nozzle position adjustment. It can automatically detect the temperature around the welding head, and then sense the angle change between the welding head and the working plane, realizing the adaptive adjustment of the protective gas coverage range. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of a device for repairing steel plates of flow-through components of a hydropower station unit proposed by the present invention;

[0036] Figure 2 This is a structural schematic diagram of a steel plate repair assembly of a steel plate repair device for a flow-through component of a hydropower station unit proposed by the present invention;

[0037] Figure 3 It is a schematic diagram of the local structure of the steel plate repair assembly;

[0038] Figure 4 This is a structural schematic diagram of a temperature transmission assembly of a steel plate repair device for a flow-through component of a hydropower station unit proposed by the present invention;

[0039] Figure 5 It is a structural schematic diagram of the temperature sensing structure;

[0040] Figure 6 Schematic diagram of the internal structure of the temperature sensing structure;

[0041] Figure 7 This is a three-dimensional diagram of the steel plate repair assembly;

[0042] Figure 8 is a schematic diagram of the internal structure of the conduction structure;

[0043] Fig. 9The present invention is a schematic structural diagram of a guide structure of a device for repairing steel plates of flow-through components of a hydropower station unit.

[0044] Among them, 1. repair base; 2. robotic arm; 3. steel plate repair assembly; 4. fixed part; 5. temperature transmission component; 6. guide structure; 7. nozzle; 8. moving part; 9. welding head; 51. temperature sensing structure; 52. conduction structure; 511. temperature sensing tube; 512. temperature sensing head; 513. temperature conducting rod; 514. liquid storage tank; 515. temperature sensing piston; 516. connecting rod; 521. primary threaded rod; 522. sliding block one; 523. secondary threaded rod; 524. sliding block two; 525. hydraulic tank; 526. driving piston; 61. guide slider one; 62. guide rail one; 63. hydraulic telescopic rod; 64. transverse telescopic rod; 65. guide rail two; 66. guide slider two; 67. longitudinal telescopic rod.

[0045] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0048] like Figure 1-Figure 9 As shown, the present invention proposes a device for repairing steel plates of flow-through components of a hydropower station unit, comprising: a repair base 1 and a mechanical arm 2, one end of the mechanical arm 2 being mounted on the repair base 1;

[0049] When repairing, the fixed base is fixed, and the mechanical arm 2 drives the steel plate repair assembly 3 to move along a straight line to cover the damaged position;

[0050] The steel plate repair assembly 3 is installed on the other end of the mechanical arm 2. The steel plate repair assembly 3 includes:

[0051] The fixing part 4 is fixedly mounted on the robot arm 2 and is used to carry the welding equipment;

[0052] A moving part 8, wherein a guide structure 6 is disposed between the moving part 8 and the fixed part 4, and the guide structure 6 can provide guidance for the lateral and longitudinal movement of the moving part 8;

[0053] The temperature transmission component 5 and the welding head 9, the temperature transmission component 5 is used to sense the temperature around the welding head 9, the temperature transmission component 5 includes a temperature sensing structure 51 and a conductive structure 52, the temperature sensing structure 51 drives the conductive structure 52 according to the temperature change, and the conductive structure 52 is connected to the guide structure 6 to drive the moving part 8 to move on the fixed part 4;

[0054] When the robot arm 2 switches the route it needs to travel, the angle between the welding head of the robot arm 2 and the surface of the steel plate changes, and the temperature field around the welding head 9 changes;

[0055] The air jet head 7 is fixedly mounted on the moving part 8 and is used to introduce protective gas into the working position of the welding head 9.

[0056] In this embodiment, the temperature sensing structure 51 includes a temperature sensing tube 511 and a temperature sensing head 512. The temperature sensing tube 511 is fixedly installed on the moving part 8. The temperature sensing head 512 is fixedly connected to the bottom of the temperature sensing tube 511. A temperature conducting rod 513 is fixedly connected to the temperature sensing head 512. A liquid storage tank 514 is provided inside the temperature sensing tube 511. The liquid storage tank 514 stores a liquid with obvious heat-contraction effect, which can be ethanol or acetone. In a specific embodiment, acetone is stored in the liquid storage tank 514. The temperature conducting rod 513 is arranged in the liquid storage tank 514. The temperature is transferred from the temperature sensing head 512 to the temperature conducting rod 513 through the heat conducting effect, so that the liquid in the liquid storage tank 514 expands and contracts, thereby pushing the temperature sensing piston 515 to move.

[0057] A temperature sensing piston 515 is slidably connected to the temperature sensing tube 511, and a connecting rod 516 is fixedly connected to the temperature sensing piston 515;

[0058] When the welding head 9 is working, a temperature field of 400° to 1000° or more is generated around the welding head. When the welding head 9 and the steel plate are welded at different angles, different temperature sensing heads 512 sense different temperatures and then conduct the temperature to the liquid storage tank 514.

[0059] The conducting structure 52 includes a primary threaded rod 521 and a secondary threaded rod 523, both of which are rotatably connected to the moving part 8, and the primary threaded rod 521 and the secondary threaded rod 523 are coaxial and fixedly connected to each other;

[0060] The first-level threaded rod 521 is threadedly connected with a sliding block 522, and the sliding block 522 is fixedly connected to the connecting rod 516;

[0061] The conducting structure 52 further comprises a hydraulic chamber 525 fixedly mounted on the moving part 8, and a driving piston 526 is slidably connected inside the hydraulic chamber 525;

[0062] A second sliding block 524 is threadedly connected to the secondary threaded rod 523 , and the second sliding block 524 is fixedly connected to the driving piston 526 .

[0063] In addition, the guide structure 6 includes a guide slider 1 61 and a guide slider 2 66. The bottom of the fixed portion 4 is fixedly connected to a guide rail 1 62, and the guide slider 1 61 is slidably connected to the guide rail 1 62. The bottom of the fixed portion 4 is fixedly connected to a guide rail 2 65, and the guide slider 2 66 is slidably connected to the guide rail 2 65.

[0064] A hydraulic telescopic rod 63 and a transverse telescopic rod 64 are installed between the moving part 8 and the guide slider 1 61, and a longitudinal telescopic rod 67 is installed between the moving part 8 and the guide slider 2 66;

[0065] The guide rail 1 62 and the guide rail 2 65 are arranged perpendicular to each other.

[0066] In a specific embodiment, two sets of guide sliders 1 61 and guide sliders 2 66 are provided, and guide sliders 1 61 and guide sliders 2 66 are symmetrically arranged on both sides of the fixing portion 4;

[0067] The two groups of guide slide blocks 1 61 are adjacent to each other, and the two groups of guide slide blocks 2 66 are adjacent to each other.

[0068] Specifically, the nozzle 7 is inclined relative to the axis of the moving part 8, and the air outlet of the nozzle 7 points to the direction close to the axis of the moving part 8. The nozzle 7 and the axis of the moving part 8 are preferably at an angle of 10° to 15°. In this embodiment, the angle between the nozzle 7 and the axis of the moving part 8 is 10°;

[0069] The lower half of the temperature sensing tube 511 is parallel to the nozzle 7 so that it can be aligned with the welding working position, and the temperature sensing head 512 is fixedly connected to the bottom of the temperature sensing structure 51, the upper half of the temperature sensing tube 511 is parallel to the axial direction of the moving part 8, and the temperature sensing piston 515 is slidably connected in the upper half of the temperature sensing tube 511, and a connecting pipe is provided between the hydraulic tank 525 and the liquid inlet of the hydraulic telescopic rod 63 for connection.

[0070] In a specific embodiment, the primary threaded rod 521 and the sliding block 1 522 use non-self-locking threads, and the sliding block 1 522 drives the primary threaded rod 521 to rotate when it moves;

[0071] The secondary threaded rod 523 and the second sliding block 524 adopt self-locking threads, and when the secondary threaded rod 523 rotates, the second sliding block 524 is driven to move;

[0072] The thread rotation direction of the secondary threaded rod 523 is set in the same direction as that of the primary threaded rod 521. Four groups of fixed parts are set at the bottom of the movable part 8 of the nozzle 7, and are evenly distributed on the circumference of the bottom of the movable part 8, so that the four groups of nozzles 7 can cover the welding work area from four directions.

[0073] When in use, the repair base 1 is fixed near the steel plate of the current-passing component that needs to be repaired, or the repair base 1 can be fixed on a slide rail so that the repair base 1 can move on the slide rail; then the mechanical arm 2 is used to drive the steel plate repair assembly 3 to move, and the steel plate is welded and repaired, so that the damaged part on the steel plate is repaired;

[0074] When the welding head 9 performs repair welding on the steel plate through the welding wire, four groups of symmetrically arranged air nozzles 7 respectively introduce protective gas to the welding working part from four directions, and the input port of the air nozzle 7 is connected to the external protective gas introduction device (not shown), so that the welding part is covered by the protective gas, so that a flat molten pool surface can be formed at the welding part;

[0075] When the angle of the welding place changes, due to the change in the angle between the welding head 9 and the working surface, the shielding gas of the four groups of nozzles 7 is offset in one direction at the working position of the welding head 9. At this time, due to the high temperature generated when the welding head 9 is working, the temperature at the temperature sensing head 512 is different. The temperature sensing head 512 transmits the temperature to the temperature conducting rod 513, so that the temperature of the liquid in the liquid storage tank 514 changes. At this time, under the action of thermal expansion and contraction, the temperature sensing piston 515 is driven to move. The temperature sensing piston 515 pushes the sliding block 1 522 to move through the connecting rod 516, thereby driving the primary threaded rod 521 to rotate. The secondary threaded rod 523 rotates synchronously with the primary threaded rod 521, so that the sliding block 2 524 moves with the driving piston 526, and then the hydraulic oil in the hydraulic tank 525 is pushed into the opposite hydraulic telescopic rod 63, so that the length of the hydraulic telescopic rod 63 is changed, and then the distance between each group of nozzles 7 and the welding head 9 is adjusted, so that the shielding gas can move in the direction of the inclination of the welding head 9, so that the shielding gas can evenly cover the welding work again.

[0076] The above is the overall workflow of the present invention.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0079] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A device for repairing steel plates of flow-through components of a hydropower station unit, characterized in that: include: A repair base (1) and a mechanical arm (2), wherein one end of the mechanical arm (2) is mounted on the repair base (1); A steel plate repair assembly (3), the steel plate repair assembly (3) being mounted on the other end of the mechanical arm (2), the steel plate repair assembly (3) comprising: A fixing part (4) is fixedly mounted on the robot arm (2) and is used to carry the welding equipment; A movable part (8), wherein a guide structure (6) is provided between the movable part (8) and the fixed part (4), and the guide structure (6) can provide guidance for the lateral and longitudinal movement of the movable part (8); A temperature transmission component (5) and a welding head (9), wherein the welding head (9) is fixedly mounted on a fixed portion (4), the temperature transmission component (5) is used to sense the temperature around the welding head (9), the temperature transmission component (5) comprises a temperature sensing structure (51) and a conducting structure (52), the temperature sensing structure (51) drives the conducting structure (52) according to temperature changes, and the conducting structure (52) is connected to a guide structure (6) and is used to drive the moving portion (8) to move on the fixed portion (4); The spray head (7) is fixedly mounted on the moving part (8) and is used to introduce protective gas into the working position of the welding head (9).

2. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 1, characterized in that: The temperature sensing structure (51) comprises a temperature sensing tube (511) and a temperature sensing head (512); the temperature sensing tube (511) is fixedly mounted on the moving part (8); the temperature sensing head (512) is fixedly connected to the bottom of the temperature sensing tube (511); a temperature conducting rod (513) is fixedly connected to the temperature sensing head (512); a liquid storage bin (514) is provided inside the temperature sensing tube (511); and the temperature conducting rod (513) is arranged inside the liquid storage bin (514); A temperature sensing piston (515) is slidably connected inside the temperature sensing tube (511), and a connecting rod (516) is fixedly connected to the temperature sensing piston (515).

3. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 2, characterized in that: The conducting structure (52) comprises a primary threaded rod (521) and a secondary threaded rod (523), wherein the primary threaded rod (521) and the secondary threaded rod (523) are both rotatably connected to the moving part (8), and the primary threaded rod (521) and the secondary threaded rod (523) are coaxial and fixedly connected to each other; The first-level threaded rod (521) is threadedly connected with a sliding block 1 (522), and the sliding block 1 (522) is fixedly connected to the connecting rod (516); The conducting structure (52) further comprises a hydraulic chamber (525) fixedly mounted on the moving part (8), wherein a driving piston (526) is slidably connected inside the hydraulic chamber (525); The secondary threaded rod (523) is threadedly connected with a second sliding block (524), and the second sliding block (524) is fixedly connected to the driving piston (526).

4. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 3, characterized in that: The guide structure (6) comprises a guide slider 1 (61) and a guide slider 2 (66); the bottom of the fixed portion (4) is fixedly connected to a guide rail 1 (62); the guide slider 1 (61) is slidably connected to the guide rail 1 (62); the bottom of the fixed portion (4) is fixedly connected to a guide rail 2 (65); the guide slider 2 (66) is slidably connected to the guide rail 2 (65); A hydraulic telescopic rod (63) and a transverse telescopic rod (64) are installed between the moving part (8) and the first guide slider (61), and a longitudinal telescopic rod (67) is installed between the moving part (8) and the second guide slider (66); The guide rail 1 (62) and the guide rail 2 (65) are arranged perpendicular to each other.

5. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 4, characterized in that: The guide slider 1 (61) and the guide slider 2 (66) are each provided in two groups, and the guide slider 1 (61) and the guide slider 2 (66) are respectively provided on both sides of the fixing part (4) in a symmetrical arrangement; The two groups of guide slide blocks 1 (61) are adjacent to each other, and the two groups of guide slide blocks 2 (66) are adjacent to each other.

6. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 5, characterized in that: The jet head (7) is arranged to be inclined relative to the axis of the moving part (8), and the air outlet of the jet head (7) points in a direction close to the axis of the moving part (8); The lower half of the temperature sensing tube (511) is parallel to the nozzle (7), and the temperature sensing head (512) is fixedly connected to the bottom of the temperature sensing structure (51), the upper half of the temperature sensing tube (511) is parallel to the axial direction of the moving part (8), and the temperature sensing piston (515) is slidably connected in the upper half of the temperature sensing tube (511).

7. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 6, characterized in that: A connecting pipe is provided between the hydraulic tank (525) and the liquid inlet of the hydraulic telescopic rod (63) for connection.

8. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 7, characterized in that: The primary threaded rod (521) and the sliding block (522) adopt non-self-locking threads, and the sliding block (522) drives the primary threaded rod (521) to rotate when it moves; The secondary threaded rod (523) and the second sliding block (524) adopt self-locking threads, and when the secondary threaded rod (523) rotates, the second sliding block (524) is driven to move; The thread rotation direction of the secondary threaded rod (523) and the primary threaded rod (521) is arranged in the same direction.

9. A device for repairing steel plates of flow-through components of a hydropower station unit according to claim 8, characterized in that: Four groups of the air jet heads (7) are arranged at the bottom of the moving part (8) and are evenly distributed on the circumference of the bottom of the moving part (8).

Images