Repair device and repair method

Abstract

The invention belongs to the technical field of equipment maintenance, and discloses a repairing device and a repairing method.The repairing device comprises a fixed connecting piece which comprises at least two fixed sub-connecting pieces, the at least two fixed sub-connecting pieces are sequentially connected end to end in the circumferential direction of a first axis and detachably connected, and a fixed hole is defined by the at least two fixed sub-connecting pieces; the axis of the fixing hole is parallel to a first axis, and the first axis extends in the first direction; the rotary connecting piece is movably connected to the fixed connecting piece and can move around a first axis; and the cutter is connected to the rotary connecting piece. The technical problem that the reactor pressure vessel has a leakage risk after the conical sealing surface on the thermocouple column is damaged can be solved.

Description

Technical Field

[0001] This application belongs to the field of equipment maintenance technology, specifically relating to a repair device and repair method. Background Technology

[0002] During routine refueling and overhauls at nuclear power plants, the thermocouple column mechanical seal must be removed before the reactor pressure vessel top cover can be opened. During the repeated disassembly and reassembly of the thermocouple column mechanical seal, the conical sealing surface on the thermocouple column is prone to damage. Damage to the conical sealing surface of the thermocouple column can lead to a risk of leakage from the reactor pressure vessel. Summary of the Invention

[0003] The purpose of this application is to provide a repair device and repair method to solve the technical problem in the prior art where damage to the conical sealing surface on the thermocouple column leads to the risk of leakage in the reactor pressure vessel.

[0004] To achieve the above objectives, an embodiment of the first aspect of this application provides a repair device, comprising: a fixed connector, including at least two fixed sub-connectors, the at least two fixed sub-connectors being sequentially connected end-to-end along the circumference of a first axis and detachably connected, forming a fixed hole, the axis of the fixed hole being parallel to the first axis, the first axis extending along a first direction; a rotating connector, movably connected to the fixed connector and capable of moving around the first axis; and a cutting tool connected to the rotating connector.

[0005] In some embodiments, the fixing sub-connector has an inner conical surface coaxial with the first axis on the side facing the fixing hole; the repair device further includes at least two radial positioning members and at least two pressing members; the at least two radial positioning members are arranged sequentially at intervals along the circumference of the first axis; one end of the radial positioning member away from the first axis has a first positioning surface and the other end has a second positioning surface, the first positioning surface is in contact with the inner conical surface, and the second positioning surfaces of the at least two radial positioning members are used to contact a cylindrical surface of the workpiece to be repaired, the first positioning surface and the second positioning surface are coaxial; the pressing member is connected to one end of the fixing sub-connector along the first direction, and the pressing member abuts against at least one radial positioning member along the first direction to press the corresponding radial positioning member against the corresponding fixing sub-connector.

[0006] In some embodiments, the wall of the fixing hole is provided with an internal thread coaxial with the first axis, and the internal thread is located on one side of the inner conical surface along the first direction; the pressing member is an arc-shaped member whose own axis is parallel to the first axis, and at least two pressing members are arranged sequentially along the circumference of the first axis; the pressing member includes a main body and a supporting part, the main body is spaced apart from the fixing sub-connector along the first direction; the supporting part is connected to one end of the main body near the radial positioning member along the first direction, and the supporting part abuts against the radial positioning member; the main body is provided with an external thread that connects to the internal thread.

[0007] In some embodiments, the repair device further includes at least two support wheels, which are rotatably connected to the fixed sub-connector along their own axes. The axes of the support wheels extend along a first direction, and the at least two support wheels are distributed sequentially at intervals along the circumference of the fixed connector. The support wheels are provided with annular grooves coaxial with them. The rotating connector is an annular member sleeved on the at least two support wheels and located within the annular grooves of the at least two support wheels. The rotating connector includes at least two rotating sub-connectors, which are sequentially connected end-to-end along the circumference of the first axis and are detachably connected.

[0008] In some embodiments, in the radial direction of the support wheel, the groove wall of the annular groove includes a first conical wall and a second conical wall spaced apart along a first direction. Both the first and second conical walls are coaxial with the support wheel. In the radial direction of the support wheel from the center to the edge, the distance between the first and second conical walls gradually increases in the first direction. The rotating sub-connector abuts against the first and second conical walls.

[0009] In some embodiments, the repair device further includes: a lead screw assembly connected to a rotating connector and a cutting tool, the lead screw assembly being used to drive the cutting tool to slide along a virtual line, the virtual line intersecting with a first axis; the lead screw assembly including a first lead screw, the axis of the first lead screw being parallel to the virtual line; a dial wheel connected to and coaxial with the first lead screw; and a pusher connected to a fixed connector, the pusher being located on one side of the first lead screw along a first direction, the pusher being used to rotate the dial wheel when the dial wheel moves to the side of the pusher.

[0010] In some embodiments, in an initial state, the dial wheel has a first tooth and two second teeth adjacent to the first tooth. Both the first tooth and the second tooth are located on the side of the first lead screw close to the pusher in a first direction, and the first tooth is located on the edge of the dial wheel in the first direction. In the first direction, when the ends of the two second teeth away from the first lead screw are located at the same position, the end of the pusher close to the first lead screw is located between the tooth tip of the first tooth and the tooth tip of the second tooth.

[0011] In some embodiments, the repair apparatus further includes a coaxiality measuring instrument connected to the rotating connector, the coaxiality measuring instrument being used to measure the coaxiality between the rotating connector and the workpiece to be repaired.

[0012] In some embodiments, the repair device further includes an axial drive member connected to the fixed connector, the axial drive member being used to connect the workpiece to be repaired and to drive the fixed connector to move along a first direction.

[0013] In some embodiments, the repair device further includes a rotation drive and a gear connected to the rotation drive. The rotation drive is connected to a fixed connector and is used to drive the gear to rotate. The rotation connector includes a gear ring that meshes with the gear. The gear ring includes at least two arc-shaped racks. The at least two arc-shaped racks are connected end to end in sequence along the circumference of the first axis and are detachably connected. The axis of the arc-shaped racks is parallel to the first axis.

[0014] The second aspect of this application also provides a repair method using the repair device of any one of the first aspect embodiments. The repair method includes: installing a fixed connector and a rotating connector on the workpiece to be repaired, wherein the rotating connector is connected to a fixed sub-connector, at least two fixed sub-connectors are arranged around the workpiece to be repaired, and at least two fixed sub-connectors are connected end to end, and at least two fixed sub-connectors are clamped and fixed on the workpiece to be repaired; controlling the rotating connector to rotate around the workpiece to be repaired, and the rotating connector drives a cutting tool to process the sealing surface of the workpiece to be repaired; removing the fixed connector and the rotating connector from the workpiece to be repaired, wherein at least two connected fixed sub-connectors are separated, the fixed sub-connectors and the rotating connector are removed from the workpiece to be repaired, and the rotating connector is removed from the fixed sub-connector.

[0015] The beneficial effects of the repair device and repair method provided in this application are as follows: By setting at least two detachably connected fixed sub-connectors to form a fixed connector, these at least two fixed sub-connectors can be fixed to the workpiece to be repaired by clamping. After disassembling the connected fixed sub-connectors, the repair device can be removed from the workpiece without removing it from the equipment, allowing for rapid repair of the workpiece. The rotating connector allows the cutting tool to rotate around the workpiece, and the tool removes material from the surface of the workpiece, smoothing its surface. The embodiments of this application can solve the technical problem of leakage risk in reactor pressure vessels caused by damage to the conical sealing surface on thermocouple columns, saving significant personnel investment and shortening the construction period of regular refueling and overhaul of nuclear power plants. When the repair device is installed on the thermocouple column to repair the conical sealing surface, the repair device is located above the top cover of the reactor pressure vessel, reducing the radiation dose to maintenance personnel from the materials inside the reactor pressure vessel.

[0016] This invention utilizes the interaction between a dial wheel and a pusher. Each rotation of the cutting tool causes the pusher to rotate the dial wheel once, which in turn moves the cutting tool once along the feed direction. By rotating the cutting tool multiple times, the dial wheel moves the cutting tool along the feed direction multiple times, thus achieving the repair of the entire sealing surface. This invention employs a method of gradually repairing the sealing surface by controlling the feed rate of the cutting tool. The interaction force between the cutting tool and the workpiece to be repaired is relatively small, allowing for more precise control of the dimensions of the area to be repaired on the workpiece, resulting in better repair outcomes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial structural schematic diagram of a reactor pressure vessel provided in some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a thermocouple sealing device provided in some embodiments of this application; Figure 3 Schematic diagram of the structure of the repair device provided in some embodiments of this application Figure 1 ; Figure 4 Schematic diagram of the structure of the repair device provided in some embodiments of this application Figure 2 ; Figure 5 Cross-sectional view of the repair apparatus provided in some embodiments of this application Figure 1 ; Figure 6 for Figure 5 Enlarged view of part B in the middle; Figure 7 for Figure 5 Enlarged view of part A in the middle; Figure 8 Schematic diagram of the structure of the repair device provided in some embodiments of this application Figure 3 ; Figure 9 Schematic diagram of the structure of the repair device provided in some embodiments of this application Figure 4 ; Figure 10 Cross-sectional view of the repair apparatus provided in some embodiments of this application Figure 2 ; Figure 11 A flowchart illustrating a repair method provided in some embodiments of this application.

[0019] The following are the labeling elements in the figure: 100. Repair device; 11. Fixed connector; 111. Fixed sub-connector; 1111. Inner conical surface; 112. Fixing hole; 12. Support wheel; 121. First conical wall; 122. Second conical wall; 123. Annular groove; 13. First axis; 20. Rotating connector; 21. Rotating sub-connector; 211. First arc-shaped wall; 212. Second arc-shaped wall; 22. Gear ring; 221. Arc-shaped rack; 31. Knife; 32. Knife holder; 41. Radial positioning element; 411. First positioning surface; 412. Second positioning surface; 42. Pressing element; 421. Connecting hole; 422. Main body; 423. Supporting part; 51. Lead screw assembly; 511. First lead screw; 512. Slider; 52. Dial wheel; 521. First gear tooth; 522. Second gear tooth; 53. Pushing component; 54. Virtual line; 60. Axial drive component; 61. Axial connector; 611. Arc-shaped baffle; 612. Arc-shaped flange; 62. Second lead screw; 63. Rotating component; 71. Rotary drive component; 72. Gear; 73. Coaxiality measuring instrument; 201. Workpiece to be repaired; 202. Female flange. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In pressurized water reactor nuclear power plants, each reactor unit is designed with 40 thermocouples to measure the core outlet coolant temperature. These 40 thermocouples are divided into four groups, with 10 thermocouples grouped together in each group. Please refer to [reference needed]. Figure 1 The bottom of the thermocouple column is fixed to the guide tube support plate of the upper in-core components by flanges and bolts. The upper part of the thermocouple column passes through the through-hole on the top cover of the reactor pressure vessel, leading the thermocouple signal out of the reactor pressure vessel.

[0025] During nuclear power plant operation, the reactor pressure vessel is filled with high-temperature, high-pressure, and highly radioactive coolant. To ensure the coolant is contained within a complete space, thermocouple sealing devices are designed between the four thermocouple posts and the corresponding reactor top cover penetrations. Please refer to [reference needed]. Figure 2 The thermocouple sealing device, from top to bottom, consists of set screws, set screw plates, half-clamping rings, male flange, disc gasket, clamps, clamp bolts and nuts, Greco gasket, and female flange. The seal between the thermocouple column, disc gasket, and male flange is one of the weakest links. Its main sealing principle relies on a disc metal gasket. Tightening the six set screws to a certain torque provides upward traction to the thermocouple column, causing the upper surface of the disc gasket to adhere to the male flange, and the lower surface to adhere to the conical sealing surface of the thermocouple column, thus achieving an initial seal. During unit operation, under the pressure of the reactor coolant, the thermocouple column pushes upwards onto the step of the male flange, further compressing the disc gasket. The greater the pressure, the better the sealing effect, thus achieving a self-sealing function.

[0026] During scheduled refueling and overhauls at nuclear power plants, it is necessary to first remove the four thermocouple column seals and open the reactor pressure vessel top cover. Because the conical sealing surface of the thermocouple columns is located at the primary circuit pressure boundary, its position is unique, and it requires high machining precision. During nuclear power plant operation and maintenance, the sealing surface is prone to damage, leading to leakage risks. (Reference) Figure 1 , Figure 2 During the repeated disassembly and assembly of the thermocouple column sealing device, the conical sealing surface, male flange, and disc gasket on the thermocouple column are prone to damage, leading to leakage. This can affect the safe and stable operation of the nuclear power unit. While the male flange and disc gasket can be replaced after damage, the thermocouple column, due to its installation in the upper reactor internals and the presence of thermocouples inside, as well as the high level of radioactivity in the surrounding environment, involves a complex process and a long construction period. Replacing the thermocouple column due to damage to the sealing surface would be extremely costly.

[0027] To address the aforementioned problems, an embodiment of the first aspect of this application provides a repair device capable of repairing the sealing surface of a thermocouple column, the shoulder of a shaft, etc.

[0028] Please refer to Figures 3 to 5The repair device 100 of this application embodiment includes a fixed connector 11, a rotating connector 20, and a cutting tool 31. The fixed connector 11 includes at least two fixed sub-connectors 111, which are sequentially connected end-to-end along the circumference of a first axis 13 and are detachably connected, forming a fixing hole 112. The axis of the fixing hole 112 is parallel to the first axis 13, which extends along a first direction Z. The rotating connector 20 is movably connected to the fixed connector 11 and can move around the first axis 13. The cutting tool 31 is connected to the rotating connector 20.

[0029] The fixing connector 11 is used to fix it to the workpiece 201 to be repaired. At least two fixing sub-connectors 111 are connected end to end along the circumference of the first axis 13 and form a fixing hole 112. That is, the fixing connector 11 formed by at least two fixing sub-connectors 111 is an annular member surrounding the first axis 13. The fixing connector 11 can be fitted onto the workpiece 201 to be repaired and fixed to it; wherein the fixing hole 112 is used to accommodate the workpiece 201 to be repaired. For example, when the fixing connector 11 is fixed to the workpiece 201 to be repaired, the first axis 13 is the center line of the workpiece 201 to be repaired.

[0030] For workpieces 201 to be repaired that are connected to other workpieces, such as thermocouple columns, it is difficult to slip the annular component onto one end of the workpiece 201. If at least two fixing sub-connectors 111 are detachably connected, then at least two detached fixing sub-connectors 111 can be clamped onto the workpiece 201. After the connected fixing sub-connectors 111 are disassembled, the repair device 100 can be removed from the workpiece 201 without removing the workpiece 201 from the equipment.

[0031] Optionally, adjacent fixing sub-connectors 111 can be connected by bolts, resulting in a more secure connection.

[0032] The fixed connector 11 may include two or more fixed sub-connectors 111.

[0033] Optionally, the surface of the fixing sub-connector 111 facing the fixing hole 112 is an arc-shaped surface coaxial with the first axis 13, and the central angle of the arc-shaped surface is less than or equal to 180°, and the notch formed by the fixing sub-connector 111 can accommodate the workpiece 201 to be repaired.

[0034] For example, when the fixed connector 11 includes two fixed sub-connectors 111, the central angle of the arc surface of the two fixed sub-connectors 111 facing the fixed hole 112 is 180°.

[0035] For example, when the fixed connector 11 includes three fixed sub-connectors 111, the central angle of the arc surface of the three fixed sub-connectors 111 facing the fixed hole 112 can all be 120°.

[0036] For example, when the fixed connector 11 includes three fixed sub-connectors 111, the central angles of the arc surfaces of the three fixed sub-connectors 111 toward the fixed hole 112 can be 130°, 120°, and 110°, respectively.

[0037] The rotating connector 20 is movably connected to the fixed connector 11 and can move around the first axis 13. That is, when the fixed connector 11 is connected to the workpiece 201 to be repaired, the rotating connector 20 can rotate around the workpiece 201 to be repaired.

[0038] For example, a groove coaxial with the first axis 13 can be provided on the fixed connector 11, and the rotating connector 20 can be a slider that slides within the groove.

[0039] The cutting tool 31 is connected to the rotating connector 20, meaning that the cutting tool 31 can move around the first axis 13 with the rotating connector 20. Optionally, the cutting tool 31 can be a cutting tool, a grinding tool, etc.

[0040] In use, the rotating connector 20 is connected to a fixed sub-connector 111. Then, at least two fixed sub-connectors 111 are arranged around the workpiece 201 to be repaired, and the at least two fixed sub-connectors 111 are connected end-to-end, clamping the workpiece 201 to be repaired. The rotating connector 20 is then rotated around the first axis 13, causing the tool 31 to remove material from the surface of the workpiece 201 to be repaired, making the surface of the workpiece 201 smooth. The tool 31 can remove material from both the surfaces of the workpiece 201 intersecting with the first direction Z and the surfaces parallel to the first direction Z.

[0041] The beneficial effects of this application embodiment are as follows: By providing at least two detachably connected fixing sub-connectors 111 to form a fixing connector 11, the at least two fixing sub-connectors 111 can be fixed to the workpiece 201 to be repaired by clamping. After disassembling the connected fixing sub-connectors 111, the repair device 100 can be removed from the workpiece 201 to be repaired. The repair device 100 can be installed and removed from the workpiece 201 to be repaired without removing the workpiece 201 from the equipment, enabling rapid repair of the workpiece 201. The rotating connector 20 can drive the cutter 31 to rotate around the workpiece 201 to be repaired. The cutter 31 can smooth the surface of the workpiece 201 by removing material from its surface. The embodiments of this application can solve the technical problem of leakage risk in reactor pressure vessels caused by damage to the conical sealing surface on the thermocouple column. It can save a lot of personnel input and shorten the construction period of regular refueling and overhaul of nuclear power plants. When the repair device 100 is installed on the thermocouple column to repair the conical sealing surface, the repair device 100 is located above the top cover of the reactor pressure vessel. The repair device 100 can be used after the top cover is installed on the reactor pressure vessel, which reduces the radiation dose to maintenance personnel from the materials inside the reactor pressure vessel.

[0042] In some embodiments, please refer to Figure 5 The fixing sub-connector 111 has an inner conical surface 1111 coaxial with the first axis 13 on the side facing the fixing hole 112.

[0043] The repair device 100 also includes at least two radial positioning elements 41 and at least two pressing elements 42; the at least two radial positioning elements 41 are arranged sequentially at intervals along the circumference of the first axis 13; one end of the radial positioning element 41 away from the first axis 13 has a first positioning surface 411 and the other end has a second positioning surface 412, the first positioning surface 411 is in contact with the inner conical surface 1111, and the second positioning surface 412 of the at least two radial positioning elements 41 is used to contact a cylindrical surface of the workpiece 201 to be repaired, and the first positioning surface 411 and the second positioning surface 412 are coaxial.

[0044] The pressing member 42 is connected to one end of the fixed sub-connector 111 along the first direction Z. The pressing member 42 abuts against at least one radial positioning member 41 along the first direction Z to press the corresponding radial positioning member 41 against the corresponding fixed sub-connector 111.

[0045] The side of the fixing sub-connector 111 facing the fixing hole 112 has an inner conical surface 1111 coaxial with the first axis 13, that is, the fixing hole 112 formed by at least two fixing sub-connectors 111 is a conical hole.

[0046] In the radial direction of the first axis 13, the radial positioning member 41 is used to position the fixed connector 11 relative to the workpiece 201 to be repaired.

[0047] The radial positioning elements 41 are arranged sequentially at intervals along the circumference of the first axis 13, which can prevent at least two radial positioning elements 41 from abutting against each other along the circumference of the first axis 13 and avoid mutual interference during installation.

[0048] The first positioning surface 411 of the radial positioning member 41 is in contact with the inner conical surface 1111, that is, the first positioning surface 411 is a conical surface with its axis parallel to the first axis 13. The first positioning surface 411 can be used to position the fixed sub-connector 111 relative to the radial positioning member 41 in the radial direction of the first axis 13, ensuring the coaxiality of the radial positioning member 41 and the fixed sub-connector 111.

[0049] The second positioning surface 412 is located at the end of the radial positioning member 41 near the first axis 13 along the radial direction. At least two second positioning surfaces 412 are used to contact the cylindrical surface of a workpiece 201 to be repaired. The second positioning surface 412 is an arc-shaped surface with its axis parallel to the first axis 13, and it extends along the first direction Z, ensuring the coaxiality of at least two second positioning surfaces 412. The second positioning surface 412 positions the radial positioning member 41 relative to the workpiece 201 to be repaired radially along the first axis 13, ensuring the coaxiality of the radial positioning member 41 and the workpiece 201. The first positioning surface 411 and the second positioning surface 412 are coaxially arranged, and the radial positioning member 41 ensures the coaxiality of the fixed sub-connector 111 and the workpiece 201 to be repaired.

[0050] The repair device 100 may include two radial positioning elements 41, or more than two radial positioning elements 41.

[0051] Optionally, the central angle of the second positioning surface 412 in any radial positioning element 41 is less than 180°.

[0052] For example, four radial positioning elements 41 can be provided, and the central angle of the first positioning surface 411 of each radial positioning element 41 is 85°.

[0053] For example, the radial positioning element 41 can also be set to two, and the central angle of the first positioning surface 411 of the radial positioning element 41 is 175°.

[0054] The pressing member 42 presses the radial positioning member 41 against the fixed sub-connector 111, which means that the pressing member 42 presses the radial positioning member 41 against the end of the fixed sub-connector 111 that has an inner conical surface 1111.

[0055] The fixed sub-connector 111 is defined with its two ends along the first direction Z as the first end and the second end, respectively. The diameter of the inner conical surface 1111 at the first end is larger than the diameter of the inner conical surface 1111 at the second end. The pressing member 42 is connected to the first end of the fixed sub-connector 111 and presses the radial positioning member 41 towards the second end, so that the radial positioning member 41 presses against the end of the fixed sub-connector 111 with the inner conical surface 1111. Since the inner conical surface 1111 is inclined relative to the first direction Z, the holding force of the fixed sub-connector 111 against the radial positioning member 41 has a component along the radial direction of the radial positioning member 41, so that the two ends of the radial positioning member 41 are respectively held and fixed on the fixed sub-connector 111 and the workpiece 201 to be repaired. At the same time, the first positioning surface 411 is in close contact with the inner conical surface 1111, and the second positioning surface 412 is in close contact with the cylindrical surface on the workpiece 201 to be repaired, thereby ensuring the coaxiality of the fixed sub-connector 111, the radial positioning member 41 and the workpiece 201 to be repaired, so that the tool 31 can remove the material on the workpiece 201 to be repaired along the preset trajectory.

[0056] The repair device 100 may include two pressing members 42, or more pressing and positioning members.

[0057] Optionally, the pressing member 42 can correspond one-to-one with the radial positioning member 41, with each pressing member 42 abutting against one radial positioning member 41, so as to facilitate the adjustment of the holding force of each pressing member 42 against the radial positioning member 41, and thus facilitate the adjustment of the position of the radial positioning member 41 in the first direction Z.

[0058] Optionally, one pressing member 42 can also press against two radial positioning members 41.

[0059] In use, at least two fixed sub-connectors 111 are arranged around the workpiece 201 to be repaired and connected end to end. Then, at least two radial positioning members 41 are placed between the fixed sub-connectors 111 and the workpiece 201 to be repaired. Next, at least two pressing members 42 are connected to the fixed sub-connectors 111. The at least two pressing members 42 respectively press the corresponding radial positioning members 41 against the fixed sub-connectors 111. The two ends of the radial positioning members 41 are respectively pressed and fixed against the fixed sub-connectors 111 and the workpiece 201 to be repaired. The fixed sub-connectors 111, the radial positioning members 41 and the workpiece 201 to be repaired are relatively fixed.

[0060] The beneficial effects of this embodiment are as follows: The pressing member 42 holds the radial positioning member 41 against the fixed sub-connector 111, so that the two ends of the radial positioning member 41 are respectively held and fixed on the fixed sub-connector 111 and the workpiece 201 to be repaired, thus fixing the fixed sub-connector 111 and the radial positioning member 41 to the workpiece 201 to be repaired. The first positioning surface 411 is in contact with the inner conical surface 1111, ensuring the coaxiality of the radial positioning member 41 and the fixed sub-connector 111. The second positioning surface 412 is in contact with the cylindrical surface on the workpiece 201 to be repaired, ensuring the coaxiality of the workpiece 201 to be repaired and the radial positioning member 41; the first positioning surface 411 and the second positioning surface 412 are coaxially arranged, and the radial positioning member 41 ensures the coaxiality of the fixed sub-connector 111 and the workpiece 201 to be repaired.

[0061] In some embodiments, please refer to Figure 6 The fixing hole 112 has an internal thread coaxial with the first axis 13 on its hole wall. The internal thread is located on one side of the inner conical surface 1111 along the first direction Z.

[0062] The pressing member 42 is an arc-shaped member whose own axis is parallel to the first axis 13. At least two pressing members 42 are arranged sequentially along the circumference of the first axis 13. The pressing member 42 includes a main body 422 and a supporting part 423. The main body 422 is spaced apart from the fixing sub-connector 111 and the radial positioning member 41 along the first direction Z. The supporting part 423 is connected to the end of the main body 422 near the radial positioning member 41 along the first direction Z and abuts against the radial positioning member 41. The main body 422 is provided with an external thread that connects to the internal thread.

[0063] The pressing member 42 is connected to the first end of the fixed sub-connector 111, and its internal thread is connected to the external thread of the main body 422. The internal thread is located on the side of the inner conical surface 1111 along the first direction Z, closer to the first end. The main body 422 is threadedly connected to the wall of the fixing hole 112. By rotating the main body 422, the position of the pressing member 42 relative to the fixed sub-connector 111 in the first direction Z can be adjusted, thereby adjusting the holding force of the pressing member 42 on the radial positioning member 41 in the first direction Z.

[0064] The main body 422 can support the supporting part 423. The main body 422 is spaced apart from the fixing sub-connector 111 along the first direction Z. That is, in the first direction Z, the end of the main body 422 near the second end of the fixing sub-connector 111 is spaced apart from the fixing sub-connector 111. In the first direction Z, the fixing sub-connector 111 does not obstruct the movement of the main body 422, making it convenient to adjust the position of the main body 422.

[0065] The main body 422 abuts against the radial positioning member 41 via the supporting part 423, and the main body 422 is spaced apart from the fixing sub-connector 111 along the first direction Z. That is, a part of the pressing member 42 abuts against the radial positioning member 41, and the part of the pressing member 42 that is not abutting against the radial positioning member 41 is prone to tilting. The main body 422 is connected to the internal thread on the wall of the fixing hole 112 via the external thread, so the wall of the fixing hole 112 can prevent the main body 422 from moving away from the first axis 13 radially along the first axis 13, thus preventing the pressing member 42 from tilting.

[0066] Optionally, the surface of the pressing member 42 facing any fixing hole 112 is an arc-shaped surface with its axis parallel to the first axis 13, and the central angle of the arc-shaped surface is less than or equal to 180°, and the notch formed by the pressing member 42 can accommodate the workpiece 201 to be repaired.

[0067] Optionally, in the circumferential direction of the first axis 13, two adjacent pressing members 42 abut against each other, and at least two pressing members 42 form a ring structure or a near-ring structure around the first axis 13, which can prevent the pressing members 42 from rotating around the first axis 13. Optionally, in the circumferential direction of the first axis 13, two adjacent pressing members 42 may also be spaced apart by a small distance.

[0068] For example, when there are two pressing members 42, the central angles of the arc surfaces of the two pressing members 42 facing the fixing hole 112 are both 180°, and the two pressing members 42 abut against each other.

[0069] For example, when three abutment members 42 are provided, the central angle of the arc surface of the three abutment members 42 facing the fixing hole 112 can all be 120°, and each abutment member 42 abuts against the other two adjacent abutment members 42.

[0070] For example, when three pressing members 42 are provided, the central angles of the arc surfaces of the three pressing members 42 toward the fixing hole 112 can be 130°, 120°, and 110°, respectively.

[0071] In some implementations, the repair device 100 further includes a first connector for connecting two adjacent pressing members 42, so that the two adjacent pressing members 42 remain relatively fixed on the fixing sub-connector 111. One or more first connectors may be provided.

[0072] In some embodiments, two adjacent fixing sub-connectors 111 are hinged together, and the hinge axis is parallel to the first axis 13, making it easy to quickly fix the fixing sub-connectors 111 together.

[0073] In some embodiments, please refer to Figures 3 to 5The main body 422 is provided with a connecting hole 421 extending along the first direction Z at one end away from the supporting part 423. The connecting holes 421 on at least two pressing members 42 are arranged sequentially at intervals along the circumference of the first axis 13.

[0074] When rotating the pressing member 42, a tool is used to engage in the connecting hole 421. Rotating the tool can drive the pressing member 42 to rotate, thereby securing the pressing member 42 to the fixed sub-connector 111. Optionally, the tool can be a special wrench set according to the relative positions of the two connecting holes 421, and the special wrench can be engaged in at least two connecting holes 421.

[0075] In some embodiments, please refer to Figure 5 and Figure 7 The repair device 100 also includes at least two support wheels 12, which are rotatably connected to the fixed sub-connector 111 along their own axes. The axes of the support wheels 12 extend along the first direction Z, and the at least two support wheels 12 are distributed sequentially at intervals along the circumference of the fixed connector 11.

[0076] The support wheel 12 is provided with an annular groove 123 coaxial with it. The rotating connector 20 is an annular member sleeved on at least two support wheels 12 and located within the annular groove 123 of at least two support wheels 12. The rotating connector 20 includes at least two rotating sub-connectors 21, which are connected end to end along the circumference of the first axis 13 and are detachably connected.

[0077] The support wheel 12 is used to support the rotating connector 20. The repair device 100 may include two or more support wheels 12. Optionally, the two or more support wheels 12 are evenly distributed around the first axis 13, so that the support force of the support wheels 12 on the rotating connector 20 is more evenly distributed and the rotating connector 20 is more stable.

[0078] The rotating connector 20 is an annular piece sleeved on at least two support wheels 12, and the rotating connector 20 is movable around the first axis 13, so the axis of the rotating connector 20 is parallel to the first axis 13. An annular groove 123 is provided on the outer annular surface of the support wheel 12. The rotating connector 20 is located in the annular groove 123, so the groove wall of the annular groove 123 can position the rotating connector 20 in the radial and axial directions of the first axis 13, so that the rotating connector 20 can rotate stably.

[0079] If at least two rotating sub-connectors 21 are detachably connected, then at least two detached rotating sub-connectors 21 can be clamped on the entirety of at least two support wheels 12. After the connected rotating sub-connectors 21 are detached, the rotating connector 20 can be removed from the fixed connector 11, making it convenient to install and remove the rotating connector 20 from the fixed connector 11.

[0080] The rotating connector 20 may include two or more rotating sub-connectors 21.

[0081] Optionally, the surface of the rotating sub-connector 21 facing the first axis 13 is an arc-shaped surface with the axis parallel to the first axis 13, and the central angle of the arc-shaped surface is less than or equal to 180°, and the notch formed by the rotating sub-connector 21 can accommodate at least two support wheels 12.

[0082] For example, when the rotating connector 20 includes two rotating sub-connectors 21, the central angle of the arc surface of the two rotating sub-connectors 21 toward the first axis 13 is 180°.

[0083] For example, when the rotating connector 20 includes three rotating sub-connectors 21, the central angle of the arc surface of the three rotating sub-connectors 21 toward the first axis 13 can all be 120°.

[0084] For example, when the rotating connector 20 includes three rotating sub-connectors 21, the central angles of the arc surfaces of the three rotating sub-connectors 21 toward the first axis 13 can also be 130°, 120°, and 110°, respectively.

[0085] In other embodiments, the rotating connector 20 can be an annular component sleeved on the fixed connector 11. The rotating connector 20 includes at least two rotating sub-connectors 21, which are sequentially connected end-to-end along the circumference of the first axis 13 and are detachably connected. Under the limiting effect of the fixed connector 11, the rotating connector 20 has a high coaxiality with the first axis 13, making the trajectory of the tool 31 on the rotating connector 20 more coaxial with the first axis 13, thus ensuring the machining accuracy of the tool 31.

[0086] In some embodiments, please refer to Figure 5 and Figure 7 In the radial direction of the support wheel 12, the groove wall of the annular groove 123 includes a first conical wall 121 and a second conical wall 122 spaced apart along the first direction Z. Both the first conical wall 121 and the second conical wall 122 are coaxial with the support wheel 12. In the radial direction of the support wheel 12 from the center to the edge, the distance between the first conical wall 121 and the second conical wall 122 gradually increases in the first direction Z. The rotating sub-connector 21 abuts against the first conical wall 121 and the second conical wall 122.

[0087] In the radial direction from the center to the edge of the support wheel 12, the distance between the first conical wall 121 and the second conical wall 122 in the first direction Z gradually increases. That is, the diameter of the first conical wall 121 gradually increases from the end near the second conical wall 122 to the end away from the second conical wall 122 along the first direction Z; the diameter of the second conical wall 122 gradually increases from the end near the first conical wall 121 to the end away from the first conical wall 121 along the first direction Z.

[0088] Rotary sub-connectors 21 abut against the first conical wall 121 and the second conical wall 122, that is, at least two rotary sub-connectors 21 hold the first conical wall 121 and the second conical wall 122 of at least two support wheels 12.

[0089] Both the first conical wall 121 and the second conical wall 122 are inclined relative to the first direction Z. Therefore, the supporting force of the rotating sub-connector 21 on the first conical wall 121 and the second conical wall 122 has a component force along the first direction Z. The first conical wall 121 can prevent the rotating sub-connector 21 from moving away from the second conical wall 122 along the first direction Z. The second conical wall 122 can prevent the rotating sub-connector 21 from moving away from the first conical wall 121 along the first direction Z, so that the rotating sub-connector 21 is fixed relative to the fixed connector 11 in the first direction Z.

[0090] Both the first conical wall 121 and the second conical wall 122 are radially inclined relative to the first axis 13. Therefore, the supporting force of the rotating sub-connector 21 on the first conical wall 121 and the second conical wall 122 has a radial component along the first axis 13. The first conical wall 121 and the second conical wall 122 in at least two support wheels 12 can respectively prevent the rotating sub-connector 21 from approaching the first axis 13 along different radial directions of the first axis 13, so that the rotating sub-connector 21 is fixed relative to the fixed connector 11 in the direction perpendicular to the first direction Z, and the rotating sub-connector 21 remains stable.

[0091] The support wheel 12 is connected to the fixed sub-connector 111 and abuts against the rotating sub-connector 21. In the radial direction of the first axis 13, the fixed sub-connector 111 can abut against the rotating sub-connector 21 through the support wheel 12, so that the rotating connector 20 composed of at least two rotating sub-connectors 21 is coaxial with the workpiece 201 to be repaired.

[0092] For example, the rotating sub-connector 21 has a first arcuate wall 211 and a second arcuate wall 212 located within the annular groove 123. The first arcuate wall 211 abuts against the first conical wall 121, and the second arcuate wall 212 abuts against the second conical wall 122. At least two of the first arcuate walls 211 of at least two rotating sub-connectors 21 form a conical wall tangent to at least two of the first conical walls 121 of at least two support wheels 12. At least two of the second arcuate walls 212 of at least two rotating sub-connectors 21 form a conical wall tangent to at least two of the second conical walls 122 of at least two support wheels 12.

[0093] The beneficial effect of this embodiment is that, in the radial direction from the center to the edge of the support wheel 12, the distance between the first conical wall 121 and the second conical wall 122 gradually increases in the first direction Z, making it easier to place the rotating sub-connector 21 from the edge of the support wheel 12 between the first conical wall 121 and the second conical wall 122. At positions where the distance between the first conical wall 121 and the second conical wall 122 is smaller, it can be ensured that the first conical wall 121 and the second conical wall 122 abut against the rotating sub-connector 21. In the first direction Z, the first conical wall 121 and the second conical wall 122 can prevent the rotating sub-connector 21 from moving in the opposite direction, so that the rotating sub-connector 21 is fixed relative to the fixed connector 11 in the first direction Z; the first conical wall 121 and the second conical wall 122 in at least two support wheels 12 can respectively prevent the rotating sub-connector 21 from approaching the first axis 13 along different radial directions of the first axis 13, so that the rotating sub-connector 21 is fixed relative to the fixed connector 11 in the direction perpendicular to the first direction Z, so that the rotating sub-connector 21 remains stable.

[0094] In some embodiments, please refer to Figure 5 , Figure 8 and Figure 9 The repair device 100 also includes a lead screw assembly 51, a dial wheel 52, and a pusher 53. The lead screw assembly 51 is connected to the rotating connector 20 and the cutter 31. The lead screw assembly 51 drives the cutter 31 to slide along a virtual line 54, which intersects the first axis 13. The lead screw assembly 51 includes a first lead screw 511, the axis of which is parallel to the virtual line 54. The dial wheel 52 is connected to and coaxial with the first lead screw 511. The pusher 53 is connected to the fixed connector 11 and is located on one side of the first lead screw 511 along the first direction Z. The pusher 53 is used to rotate the dial wheel 52 when the dial wheel 52 moves to the side of the pusher 53.

[0095] The lead screw assembly 51 is connected to the rotating connector 20 and the cutter 31, and can drive the cutter 31 to move relative to the rotating connector 20.

[0096] To facilitate the description of the movement trajectory of the tool 31, a virtual line 54 is defined. The virtual line 54 intersects the first axis 13. Therefore, as the tool 31 moves along the virtual line 54, the radial distance between the tool 31 and the first axis 13 can change. The lead screw assembly 51 can adjust the radial feed distance and retraction distance of the tool 31. Optionally, the virtual line 54 can be set at an acute angle to the first axis 13. After the tool 31 feeds along the virtual line 54 and rotates around the first axis 13, it can form a conical surface coaxial with the first axis 13 on the workpiece 201 to be repaired. This is suitable for repairing workpieces such as thermocouple pillars with conical sealing surfaces. Optionally, the virtual line 54 can also be perpendicular to the first axis 13. After the tool 31 feeds along the virtual line 54 and rotates around the first axis 13, it can form a plane perpendicular to the first axis 13 on the workpiece 201 to be repaired.

[0097] In the lead screw assembly 51, the rotation of the first lead screw 511 can drive the tool 31 to move. For example, the lead screw assembly 51 also includes a slider 512, which is fixedly connected to the tool 31. The slider 512 is provided in the tool holder 32, and the slider 512 is slidably connected to the tool holder 32 in the direction of the virtual line 54 in the sliding hole. The tool holder 32 is fixed on the rotating connector 20. The first lead screw 511 is threadedly connected to the slider 512, and the first lead screw 511 is rotatably connected to the tool holder 32 around its own axis. By rotating the first lead screw 511, the slider 512 can be driven to move in the direction of the virtual line 54, thereby driving the tool 31 to move in the direction of the virtual line 54.

[0098] For example, the lead screw assembly 51 can also be a ball screw mechanism. The lead screw assembly 51 includes a nut and balls connected between the nut and the first lead screw 511. The nut and the rotating connector 20 are slidably connected along the direction of the virtual line 54. The first lead screw 511 is rotatably connected to the rotating connector 20 around its own axis. By rotating the first lead screw 511, the nut can be moved along the direction of the virtual line 54, thereby driving the cutter 31 to move along the virtual line 54.

[0099] The pusher 53 is connected to the fixed connector 11, and the dial 52 is connected to the rotating connector 20 through the first lead screw 511. Thus, the dial 52 can rotate relative to the pusher 53 around the first axis 13.

[0100] The dial wheel 52 has multiple teeth arranged at intervals around its own axis. When the dial wheel 52 moves to the side of the pusher 53, the pusher 53 contacts the teeth on the dial wheel 52. As the dial wheel 52 continues to move, the pusher 53 actuates the teeth, causing the dial wheel 52 to rotate. The rotation of the dial wheel 52 drives the first lead screw 511 to rotate, thereby causing the tool 31 to approach the first axis 13 along the virtual line 54, and allowing the tool 31 to feed radially along its own rotation trajectory. For each revolution of the tool 31, the pusher 53 drives the dial wheel 52 to rotate once, which in turn drives the first lead screw 511 to rotate, causing the tool 31 to automatically feed along the feed direction. During the repair process, the tool 31 rotates multiple times, and the dial wheel 52, through the lead screw assembly 51, drives the tool 31 to move multiple times along the feed direction, allowing the tool 31 to gradually feed, thus achieving the repair of the entire sealing surface. By controlling the feed rate of the cutting tool 31 to gradually repair the sealing surface, the interaction force between the cutting tool 31 and the workpiece 201 to be repaired is smaller, allowing for more precise control of the dimensions of the area to be repaired on the workpiece 201, resulting in better repair effects. Compared with electronic control, the automatic feed of the cutting tool 31 is controlled by the mechanical cooperation of the pusher 53, the dial wheel 52, and the lead screw assembly 51, making the automatic feed process of the cutting tool 31 more reliable.

[0101] In some embodiments, the dial 52 has five or more teeth.

[0102] In some embodiments, please refer to Figure 5 , Figure 8 and Figure 9 In its initial state, the dial wheel 52 has a first tooth 521 and two second teeth 522 adjacent to the first tooth 521. Both the first tooth 521 and the second tooth 522 are located on the side of the first lead screw 511 along the first direction Z, near the pusher 53. The first tooth 521 is located at the edge of the dial wheel 52 along the first direction Z. In the first direction Z, when the ends of the two second teeth 522 away from the first lead screw 511 are in the same position, the end of the pusher 53 near the first lead screw 511 is located between the tip of the first tooth 521 and the tip of the second tooth 522.

[0103] The initial state refers to the state in which the repair device 100 has not repaired the workpiece 201 to be repaired, the tool 31 has not rotated around the first axis 13, and the dial wheel 52 has not been pushed by the pusher 53.

[0104] The two second gear teeth 522 are located on both sides of the first gear teeth 521 along the circumference of the dial wheel 52.

[0105] The first gear tooth 521 is located on the side of the first lead screw 511 close to the push member 53 along the first direction Z, and the first gear tooth 521 is located on the edge of the dial wheel 52 along the first direction Z; that is, in the first direction Z, the first gear tooth 521 is located between the first lead screw 511 and the push member 53; and for all gear teeth located between the first lead screw 511 and the push member 53 along the first direction Z, the distance between the tooth tip of the first gear tooth 521 and the axis of the dial wheel 52 in the first direction Z is the largest.

[0106] In the initial state, in the first direction Z, the ends of the two second gear teeth 522 away from the first lead screw 511 are located at the same position, that is, the two second gear teeth 522 are symmetrical about a plane passing through the axis of the dial wheel 52 and parallel to the first direction Z. The end of the pusher 53 near the first lead screw 511 is located between the tooth tip of the first gear tooth 521 and the tooth tip of the second gear tooth 522. When the dial wheel 52 moves to the side of the pusher 53 with the rotating connector 20 around the first axis 13, the first gear tooth 521 rotates to contact and abut against the pusher 53. The abutting force of the pusher 53 on the first gear tooth 521 causes the first gear tooth 521 to rotate around the axis of the dial wheel 52, and the rotation angle of the first gear tooth 521 is less than or equal to the tooth pitch angle between two adjacent gear teeth (360° / number of teeth of the dial wheel 52). The rotation of the first gear tooth 521 can drive the first lead screw 511 to rotate by a small angle, thereby making the feed amount of the tool 31 smaller when it approaches the first axis 13 along the virtual line 54, resulting in higher machining accuracy. Each time the cutting tool 31 rotates once, the pusher 53 drives the dial wheel 52 to rotate once, which in turn drives the first lead screw 511 to rotate, causing the cutting tool 31 to feed automatically.

[0107] By adjusting the size of the dial wheel 52, the size of the gear teeth, and the position of the pusher 53 relative to the first gear tooth 521, the rotation angle of the dial wheel 52 can be adjusted, thereby adjusting the automatic feed amount of the tool 31.

[0108] In some embodiments, please refer to Figure 5 , Figure 8 and Figure 9 In the initial state, when the ends of the two second gear teeth 522 away from the first lead screw 511 are in the same position in the first direction Z, the end of the pusher 53 close to the first lead screw 511 is in the same position as the end of the second gear teeth 522 away from the first lead screw 511.

[0109] During the rotation of the first gear 521 driven by the pusher 53, in the first direction Z, when the tip of the first gear 521 rotates to the same position as the end of the pusher 53 near the first lead screw 511, the first gear 521 separates from the pusher 53 and stops rotating. In the first direction Z, when the end of the pusher 53 near the first lead screw 511 is at the same position as the end of the second gear 522 away from the first lead screw 511, the tip of the first gear 521 stops rotating at the initial position when the tip of one of the second gears 522 has not rotated. That is, when the first gear 521 rotates to the initial position when one of the second gears 522 has not rotated, the other second gear 522 rotates to the initial position of the first gear 521. With each rotation of the tool 31 and the dial wheel 52, the pusher 53 drives one tooth to rotate to the position of the next tooth. The tooth pitch of the teeth on the dial wheel 52 is equal, which means that the angle of rotation of the dial wheel 52 is the same each time. The dial wheel 52 drives the first lead screw 511 to rotate at the same angle each time, thereby controlling the feed amount of the tool 31 along the virtual line 54 to be the same each time, thus improving the machining accuracy.

[0110] Ideally, the end of the pusher 53 near the first lead screw 511 and the end of the second gear 522 away from the first lead screw 511 should be located at the same position in the first direction Z. This represents the relative position of the pusher 53 and the second gear 522. However, in the actual fabrication of the repair device 100, to prevent the pusher 53 from directly pushing the second gear 522 without pushing the first gear 521, the end of the pusher 53 near the first lead screw 511 can be spaced relatively close to the second gear 522 in the first direction Z.

[0111] In some embodiments, please refer to Figure 4 The repair device 100 also includes a coaxiality measuring instrument 73 connected to the rotating connector 20. The coaxiality measuring instrument 73 is used to measure the coaxiality between the rotating connector 20 and the workpiece 201 to be repaired.

[0112] Optionally, the coaxiality measuring instrument 73 may include a dial indicator or micrometer, etc., which has high measurement accuracy.

[0113] By measuring the coaxiality between the rotating connector 20 and the workpiece 201 to be repaired, the coaxiality between the rotating connector 20 and the workpiece 201 to be repaired can be adjusted, thereby adjusting the coaxiality between the running trajectory of the tool 31 and the workpiece 201 to be repaired, and improving machining accuracy. For example, the coaxiality measuring instrument 73 can be fixed on the rotating connector 21.

[0114] In some embodiments, please refer to Figure 5 The repair device 100 also includes an axial drive member 60 connected to the fixed connector 11. The axial drive member 60 is used to connect the workpiece 201 to be repaired and to drive the fixed connector 11 to move along the first direction Z.

[0115] Optionally, the axial drive 60 may include a lead screw mechanism, an electric actuator, or a hydraulic actuator, which makes it easy to control the movement distance of the fixed connection 11.

[0116] In use, the axial drive 60 is connected to the workpiece 201 to be repaired, and the fixed connector 11 is released from the workpiece 201. The axial drive 60 is controlled to move the fixed connector 11 along the first direction Z. The fixed connector 11 drives the rotating connector 20 and the tool 31 to move along the first direction Z. The position of the tool 31 relative to the workpiece 201 to be repaired in the first direction Z is adjusted so that the tool 31 is in the position required for repair. The axial drive 60 facilitates the adjustment of the position of the tool 31 relative to the workpiece 201 to be repaired in the first direction Z.

[0117] In some embodiments, please refer to Figure 5 The axial drive component 60 includes an axial connector 61 and a second lead screw 62. The axial connector 61 is fixedly connected to the fixed sub-connector 111. The axial connector 61 has an arc-shaped baffle 611 coaxial with the fixed sub-connector 111. The central angle of the arc-shaped baffle 611 is less than or equal to 180° and parallel to the first direction Z. An arc-shaped flange 612 coaxial with the fixed sub-connector 111 is provided on the arc-shaped baffle 611. The arc-shaped flange 612 is located at the end of the arc-shaped baffle 611 away from the fixed sub-connector 111 along the first direction Z and is used to hang on the workpiece 201 to be repaired. The second lead screw 62 extends along the first direction Z and is rotatably connected to the axial connector 61 around its own axis. The second lead screw 62 is threadedly connected to the fixed sub-connector 111. A rotating component 63 is provided at one end of the second lead screw 62. The rotating component 63 is provided with scales distributed around the second lead screw 62 to facilitate control of the rotation angle of the second lead screw 62.

[0118] In use, the arc-shaped flange 612 is placed at one end of the workpiece 201 to be repaired along its own length, or the arc-shaped flange 612 is placed on the flange of the workpiece 201 to be repaired, so that the workpiece 201 supports the arc-shaped flange 612; the arc-shaped baffle 611 is attached to the cylindrical surface of the workpiece 201 to be repaired, positioning the repair device 100 in the radial direction of the workpiece 201. Then the second lead screw 62 is rotated, driving the fixed sub-connector 111 to move along the first direction Z.

[0119] In some embodiments, please refer to Figure 10 The repair device 100 also includes a rotation drive 71 and a gear 72 connected to the rotation drive 71. The rotation drive 71 is connected to the fixed connector 11 and is used to drive the gear 72 to rotate.

[0120] The rotating connector 20 includes a gear ring 22 that meshes with the gear 72. The gear ring 22 includes at least two arc-shaped racks 221. The at least two arc-shaped racks 221 are connected end to end in sequence along the circumference of the first axis 13 and are detachably connected. The axis of the arc-shaped racks 221 is parallel to the first axis 13.

[0121] The rotation drive 71 can drive the gear 72 to rotate relative to the fixed connecting member 11 around its own axis. Optionally, the rotation drive 71 may include an electric motor or a pneumatic motor, etc. Optionally, the rotation drive 71 and the axial drive 60 form an angle of 120° with respect to the first axis 13.

[0122] There can be two or more arc-shaped racks 221. At least two arc-shaped racks 221 form a gear ring 22. Optionally, the arc-shaped racks 221 can be connected one-to-one with the rotating sub-connector 21.

[0123] Optionally, the surface of the arc-shaped rack 221 facing the first axis 13 is an arc-shaped surface with the axis parallel to the first axis 13, and the central angle of the arc-shaped surface is less than or equal to 180°. The notch formed by the arc-shaped rack 221 can accommodate the workpiece 201 to be repaired or the fixed connector 11.

[0124] For example, when the gear ring 22 includes two arc-shaped racks 221, the central angle of the arc surface of the two arc-shaped racks 221 toward the first axis 13 is 180°.

[0125] For example, when the gear ring 22 includes three arc-shaped racks 221, the central angle of the arc surface of the three arc-shaped racks 221 toward the first axis 13 can all be 120°.

[0126] For example, when the gear ring 22 includes three arc-shaped racks 221, the central angles of the arc surfaces of the three arc-shaped racks 221 toward the first axis 13 can also be 130°, 120°, and 110° respectively.

[0127] In use, rotating the drive component 71 drives the gear 72 to rotate, the second gear ring 22 drives the gear ring 22 to rotate, and the gear ring 22 drives the tool 31 to rotate around the first axis 13, so that the tool 31 rotates automatically and repairs the workpiece 201 to be repaired.

[0128] In some embodiments, please refer to Figures 3 to 5The repair device 100 of this application embodiment includes a fixed connector 11, a rotating connector 20, and a cutting tool 31. The fixed connector 11 includes at least two fixed sub-connectors 111, which are sequentially connected end-to-end along the circumference of a first axis 13 and are detachably connected, forming a fixing hole 112. The axis of the fixing hole 112 is parallel to the first axis 13, which extends along a first direction Z. The fixed sub-connector 111 has an inner conical surface 1111 coaxial with the first axis 13 on the side facing the fixing hole 112. The rotating connector 20 is movably connected to the fixed connector 11 and can move around the first axis 13. The cutting tool 31 is connected to the rotating connector 20.

[0129] The repair device 100 also includes at least two radial positioning elements 41 and at least two pressing elements 42; the at least two radial positioning elements 41 are arranged sequentially at intervals along the circumference of the first axis 13; one end of the radial positioning element 41 away from the first axis 13 has a first positioning surface 411 and the other end has a second positioning surface 412, the first positioning surface 411 is in contact with the inner conical surface 1111, and the second positioning surface 412 of the at least two radial positioning elements 41 is used to contact a cylindrical surface of the workpiece 201 to be repaired, and the first positioning surface 411 and the second positioning surface 412 are coaxial.

[0130] In some embodiments, the repair device 100 further includes a video monitoring module, which enables remote monitoring of the operation of the repair device 100.

[0131] The second aspect of this application also provides a repair method using the repair device 100 from any of the embodiments of the first aspect. Please refer to [reference needed]. Figures 3 to 5 as well as Figure 11 The repair method includes the following steps: S100: Install a fixed connector 11 and a rotating connector 20 on the workpiece 201 to be repaired, wherein the rotating connector 20 is connected to the fixed sub-connector 111, at least two fixed sub-connectors 111 are arranged around the workpiece 201 to be repaired, and then the at least two fixed sub-connectors 111 are connected end to end, and the at least two fixed sub-connectors 111 are clamped and fixed on the workpiece 201 to be repaired.

[0132] The rotating connector 20 is slidably connected to the fixed sub-connector 111. After connecting at least two fixed sub-connectors 111 end to end, the at least two fixed sub-connectors 111 form a closed loop of fixed connector 11 and surround a fixed hole. The workpiece 201 to be repaired is located in the fixed hole. The rotating connector 20 can rotate around the fixed hole, that is, rotate around the workpiece 201 to be repaired.

[0133] S200: Control the rotating connector 20 to rotate around the workpiece 201 to be repaired, and the rotating connector 20 drives the tool 31 to process the sealing surface of the workpiece 201 to be repaired.

[0134] The rotating connector 20 can be rotated manually or driven by a motor or other power devices.

[0135] Rotating the connecting piece 20 drives the cutting tool 31 to process the sealing surface of the workpiece 201 to be repaired. In other words, rotating the connecting piece 20 drives the cutting tool 31 to rotate on the workpiece 201 to be repaired, so that the cutting tool 31 removes the material at the sealing surface of the workpiece 201 to be repaired around the first axis 13, making the sealing surface of the workpiece 201 to be repaired flat.

[0136] S300: Remove the fixed connector 11 and the rotating connector 20 from the workpiece 201 to be repaired, wherein at least two connected fixed sub-connectors 111 are separated, the fixed sub-connectors 111 and the rotating connector 20 are removed from the workpiece 201 to be repaired, and the rotating connector 20 is removed from the fixed sub-connectors 111.

[0137] After at least two connected fixing sub-connectors 111 are disassembled, the workpiece 201 to be repaired can pass through the gap between two of the fixing sub-connectors 111, and the fixing sub-connectors 111 can be removed from the workpiece 201 to be repaired.

[0138] The beneficial effects of the embodiments of this application are as follows: The repair method of the embodiments of this application utilizes the repair device 100 of any one of the first aspect embodiments, and the repair device 100 can be installed and removed from the workpiece 201 to be repaired without removing it from the equipment, so that the workpiece 201 to be repaired can be repaired quickly, and has all the beneficial effects of the repair device 100 in the first aspect embodiment.

[0139] In some embodiments, in step S100, connecting the rotating connector 20 to the fixed sub-connector 111 includes: connecting at least two rotating sub-connectors 21 to different fixed sub-connectors 111 respectively; after connecting at least two fixed sub-connectors 111 end to end, at least two rotating sub-connectors 21 form an annular rotating connector 20; at least two arc-shaped racks 221 form a toothed ring 22; and the rotating sub-connector 21 abuts against the first conical wall 121 and the second conical wall 122.

[0140] Step S100 further includes: connecting the rotating connector 20 to the fixed sub-connector 111, then connecting the axial drive 60 to the workpiece 201 to be repaired; connecting at least two fixed sub-connectors 111 end-to-end, controlling the axial drive 60 to move the fixed connector 11 along the first direction Z, the fixed connector 11 driving the rotating connector 20 and the tool 31 to move along the first direction Z, adjusting the position of the tool 31 relative to the workpiece 201 to be repaired in the first direction Z, so that the tool 31 is in the position to be repaired. Then, at least two radial positioning members 41 are placed in the fixing hole 112, so that the radial positioning members 41 are located between the fixed sub-connector 111 and the workpiece 201 to be repaired.

[0141] At least two pressing members 42 have their main bodies 422 threaded into the fixing holes 112 of the fixing sub-connector 111. The holding portions 423 of the at least two pressing members 42 respectively hold the corresponding radial positioning members 41 against the fixing sub-connector 111. The two ends of the radial positioning members 41 are respectively fixed to the fixing sub-connector 111 and the workpiece 201 to be repaired. The fixing sub-connector 111, the radial positioning members 41, and the workpiece 201 to be repaired are relatively fixed. The first positioning surface 411 of the radial positioning member 41 is in contact with the inner conical surface 1111 of the fixing sub-connector 111, ensuring the coaxiality of the radial positioning member 41 and the fixing sub-connector 111.

[0142] In step S200, the following steps are also included: before controlling the rotating connector 20 to rotate around the first axis 13, rotating the dial wheel 52 so that the ends of the two second gear teeth 522 away from the first lead screw 511 are in the same position, then the end of the pusher 53 close to the first lead screw 511 is located between the tooth tip of the first gear tooth 521 and the tooth tip of the second gear tooth 522.

[0143] Controlling the rotation of the rotating connector 20 around the first axis 13 includes: the rotating drive 71 drives the gear 72 to rotate, the second gear ring 22 drives the gear ring 22 to rotate, and the gear ring 22 drives the rotating connector 20 to rotate around the first axis 13.

[0144] The rotating connector 20 drives the cutting tool 31 to process the sealing surface of the workpiece 201 to be repaired. This process includes: when the rotating connector 20 drives the dial wheel 52 to move to the side of the pushing member 53, the pushing member 53 first contacts the first tooth 521 on the dial wheel 52. As the dial wheel 52 continues to run, the pushing member 53 actuates the tooth, causing the dial wheel 52 to rotate. The rotation of the dial wheel 52 drives the first lead screw 511 to rotate, thereby causing the cutting tool 31 to approach the first axis 13 along the virtual line 54, allowing the cutting tool 31 to feed radially along its own rotation trajectory. For each revolution of the cutting tool 31, the pushing member 53 drives the dial wheel 52 to rotate once, which in turn drives the first lead screw 511 to rotate, causing the cutting tool 31 to feed automatically.

[0145] In some embodiments, when the portion of the workpiece 201 to be repaired used for mounting the fixed connector 11 and the rotating connector 20 is a cylindrical structure, step S100 further includes: adjusting the coaxiality of the fixed connector 11, the rotating connector 20 and the cylindrical surface on the workpiece 201 to be repaired.

[0146] In some embodiments, step S100 further includes: before using the repair device 100 to repair the workpiece 201, checking whether the sealing surface of the workpiece 201 to be repaired is damaged; if the sealing surface of the workpiece 201 to be repaired is damaged, then using the repair device 100 to repair it.

[0147] For example, when the workpiece 201 to be repaired is a thermocouple column, step S100 further includes: installing a second connector to fix the thermocouple column and the female flange 202, so as to stabilize the thermocouple column; the sealing surface to be repaired on the thermocouple column includes a conical sealing surface and a cylindrical surface intersecting with the conical sealing surface; if the sealing surface of the workpiece 201 to be repaired is damaged, check the height of the conical sealing surface relative to a specific position on the thermocouple column, and check the coaxiality of the cylindrical surface on the thermocouple column where the fixing connector 11 is installed with the sealing surface to be repaired.

[0148] In some embodiments, step S100 further includes: installing the chip collection assembly onto the workpiece 201 to be repaired, such that the chip collection assembly is located below the tool 31.

[0149] In some embodiments, step S200 further includes: after machining the sealing surface with a turning tool, grinding the sealing surface with a grinding tool to improve the surface roughness of the sealing surface, which is more conducive to sealing.

[0150] In some embodiments, step S300 further includes: after removing the fixed connector 11 and the rotating connector 201, the condition of the repaired sealing surface can be inspected. Inspecting the condition of the sealing surface includes checking the relative height, dimensions, and surface condition of the sealing surface, and also includes performing non-destructive testing and leakage detection on the sealing surface.

[0151] For example, in the case where a debris collection assembly is installed on the workpiece 201 to be repaired, step S300 further includes: removing the debris collection assembly.

[0152] For example, in the case where the workpiece 201 to be repaired is a thermocouple post, and a second connector is installed to fix the thermocouple post to the female flange 202, step S300 further includes: removing the second connector.

[0153] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A repair device, characterized in that, include: A fixed connector includes at least two fixed sub-connectors, which are sequentially connected end to end along the circumference of a first axis and are detachably connected to form a fixed hole. The axis of the fixed hole is parallel to the first axis, which extends along a first direction. The rotating connector is movably connected to the fixed connector and can move around the first axis; The cutting tool is connected to the rotating connector.

2. The repair device as described in claim 1, characterized in that, The fixing sub-connector has an inner conical surface coaxial with the first axis on the side facing the fixing hole; The repair device further includes at least two radial positioning elements and at least two pressing elements; the at least two radial positioning elements are arranged sequentially at intervals along the circumference of the first axis; The radial positioning member has a first positioning surface at one end radially away from the first axis and a second positioning surface at the other end. The first positioning surface is in contact with the inner conical surface. The second positioning surfaces of at least two of the radial positioning members are used to contact a cylindrical surface of the workpiece to be repaired. The first positioning surface and the second positioning surface are coaxial. The pressing member is connected to one end of the fixed sub-connector along the first direction, and the pressing member abuts against at least one of the radial positioning members along the first direction to press the corresponding radial positioning member against the corresponding fixed sub-connector.

3. The repair device as described in claim 2, characterized in that, The fixing hole has an internal thread coaxial with the first axis on its wall, and the internal thread is located on one side of the inner conical surface along the first direction. The pressing member is an arc-shaped member whose own axis is parallel to the first axis, and at least two pressing members are arranged sequentially along the circumference of the first axis; the pressing member includes a main body and a supporting part, the main body is spaced apart from the fixing sub-connector along the first direction; the supporting part is connected to one end of the main body near the radial positioning member along the first direction, and the supporting part abuts against the radial positioning member; the main body is provided with an external thread that connects with the internal thread.

4. The repair device as described in claim 1, characterized in that, The repair device further includes at least two support wheels, which are rotatably connected to the fixed sub-connector along their own axes. The axes of the support wheels extend along the first direction, and at least two support wheels are distributed sequentially at intervals along the circumference of the fixed connector. The support wheel is provided with an annular groove coaxial with it, and the rotating connector is an annular piece sleeved on at least two of the support wheels and located in the annular groove of at least two of the support wheels; the rotating connector includes at least two rotating sub-connectors, and the at least two rotating sub-connectors are connected end to end in sequence along the circumference of the first axis and are detachably connected.

5. The repair device as described in claim 4, characterized in that, In the radial direction of the support wheel, the groove wall of the annular groove includes a first conical wall and a second conical wall spaced apart along a first direction. Both the first conical wall and the second conical wall are coaxial with the support wheel. In the radial direction of the support wheel from the center to the edge, the distance between the first conical wall and the second conical wall gradually increases in the first direction. The rotating sub-connector abuts against the first conical wall and the second conical wall.

6. The repair device as described in claim 1, characterized in that, The repair device also includes: A lead screw assembly is connected to the rotating connector and the cutting tool. The lead screw assembly is used to drive the cutting tool to slide along a virtual line, which intersects the first axis. The lead screw assembly includes a first lead screw, the axis of which is parallel to the virtual line. A dial is connected to the first lead screw and is coaxial with the first lead screw; A pusher is connected to the fixed connector. The pusher is located on one side of the first lead screw along the first direction. The pusher is used to rotate the dial when the dial moves to the side of the pusher.

7. The repair device as described in claim 6, characterized in that, In the initial state, the dial has a first tooth and two second teeth adjacent to the first tooth. The first tooth and the second teeth are both located on the side of the first lead screw close to the pusher along the first direction, and the first tooth is located on the edge of the dial along the first direction. In the first direction, when the ends of the two second teeth away from the first lead screw are located at the same position, the end of the pusher close to the first lead screw is located between the tooth tip of the first tooth and the tooth tip of the second tooth.

8. The repair device as described in any one of claims 1-7, characterized in that, The repair device further includes an axial drive component connected to the fixed connector. The axial drive component is used to connect the workpiece to be repaired and to drive the fixed connector to move along the first direction.

9. The repair device as described in any one of claims 1-7, characterized in that, The repair device further includes a rotation drive and a gear connected to the rotation drive. The rotation drive is connected to the fixed connector and is used to drive the gear to rotate. The rotating connector includes a gear ring that meshes with the gear. The gear ring includes at least two arc-shaped racks. The at least two arc-shaped racks are connected end to end in sequence along the circumference of the first axis and are detachably connected. The axis of the arc-shaped racks is parallel to the first axis.

10. A repair method, characterized in that, Using the repair apparatus as described in any one of claims 1-9, the repair method comprises: The fixed connector and the rotating connector are installed on the workpiece to be repaired, wherein the rotating connector is connected to the fixed sub-connector, at least two fixed sub-connectors are arranged around the workpiece to be repaired, and at least two fixed sub-connectors are connected end to end, and at least two fixed connectors are clamped and fixed on the workpiece to be repaired. The rotating connector is controlled to rotate around the workpiece to be repaired, and the rotating connector drives the cutting tool to process the sealing surface of the workpiece to be repaired; Remove the fixed connector and the rotating connector from the workpiece to be repaired, wherein at least two connected fixed sub-connectors are separated, the fixed sub-connectors and the rotating connector are removed from the workpiece to be repaired, and the rotating connector is removed from the fixed sub-connectors.

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