Equipment for repairing sealing surface of flange of pump shell of main pump

Abstract

The invention discloses equipment for repairing a flange sealing surface of a main pump shell, relates to the technical field of repairing of the flange sealing surface of the main pump shell, and is mainly used for solving the problem that a height difference may occur between a repaired surface and an intact surface due to the fact that most of existing repairing equipment adopts local repairing. According to the main structure, the device comprises an inner supporting platform horizontally and fixedly arranged on the inner ring side of a main pump shell flange, the top of the inner supporting platform is provided with a swing mechanism capable of horizontally rotating, the swing mechanism is provided with an outline measuring module and a repairing module, and the top of the swing mechanism is provided with an upper frame supporting mechanism capable of preventing the swing mechanism from inclining and driving the swing mechanism to rotate. The invention provides equipment for repairing a flange sealing surface of a main pump shell, which can integrally process the flange sealing surface of the main pump shell, so that the problem of height difference between a repaired surface and an intact surface is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of repairing the flange sealing surface of a main pump casing, and in particular to a device for repairing the flange sealing surface of a main pump casing. Background Art

[0002] The main pump casing flange sealing surface is an important pressure-bearing boundary of the primary circuit, and its sealing quality and reliability directly affect the safe and stable operation of the main pump and the reactor. Since the main pump operates for a long time in an environment of high temperature, high pressure and high-radioactive medium, and repeatedly bears the thermal shock and mechanical shock of the primary circuit coolant, various defects (including corrosion, cracks, dents and deformation, etc.) will occur on the main pump casing flange sealing surface, which seriously affects the integrity of the main pump pressure-bearing boundary. Therefore, in order to ensure the safety of the main pump operation, the main pump hydraulic components and pump casing will be overhauled after several operation cycles, and one of the most important tasks is to detect and repair the main pump casing flange sealing surface.

[0003] Due to the large size, heavy weight, non-removable and radioactive nature of the main pump casing, the flange sealing surface of the main pump casing cannot be repaired on-site using conventional mechanical processing equipment. Therefore, it is necessary to use special main pump casing flange sealing surface repair equipment to repair it on-site, thereby improving work efficiency, reducing manual operation processes, and reducing the dose borne by personnel.

[0004] However, most of the current main pump casing flange sealing surface repair equipment uses local repair, and there may be a height difference between the repair surface and the intact surface, which in turn affects the repair effect. Summary of the invention

[0005] The purpose of the present invention is to provide a device for repairing the main pump casing flange sealing surface, which can process the main pump casing flange sealing surface as a whole and avoid the problem of height difference between the repaired surface and the intact surface.

[0006] The technical solution of the present invention to solve the above technical problems is: a device for repairing the sealing surface of the main pump casing flange, comprising an inner support platform horizontally fixed on the inner ring side of the main pump casing flange, a rotating mechanism capable of horizontal rotation is installed on the top of the inner support platform, a contour measurement module and a repair module are arranged on the rotating mechanism, and an upper frame support mechanism is arranged on the top of the rotating mechanism which can prevent it from tilting and drive it to rotate.

[0007] As a further improvement of the present invention, the inner support platform comprises an inner support base plate horizontally arranged on the inner ring side of the main pump casing flange and coaxial with the main pump casing flange, and a plurality of centering support components arranged around its axis and in tight contact with the inner ring side of the main pump casing flange are provided on the lower surface of the inner support base plate;

[0008] The slewing mechanism comprises a slewing frame which is horizontally arranged and whose bottom is rotatably connected to the upper surface of the inner support bottom plate; the contour measurement module and the repair module are respectively arranged on the side walls of the slewing frame through module mounting seats which can be moved horizontally; the contour measurement module, the repair module and the module mounting seats are all electrically connected to the rotation control cabinet arranged on the top of the slewing frame;

[0009] The upper frame support mechanism includes a mounting frame rotatably connected to the top of the rotating frame. The edge of the mounting frame is provided with a plurality of horizontal support components arranged around its axis to prevent the rotating frame from tilting. The mounting frame is also provided with a rotating motor that can drive the rotating frame to rotate horizontally.

[0010] As a further improvement of the present invention, a wire passing tube is provided at the axis center of the upper surface of the inner support bottom plate and vertically penetrates the rotating frame along the rotating axis of the rotating frame, a gas-electric slip ring is provided on the top of the rotating frame and sleeved on the outside of the wire passing tube, and the mounting frame is connected to the upper end of the gas-electric slip ring through a slip ring pipe provided at the axis center thereof;

[0011] The centering support assembly is electrically connected to a fixed control cabinet arranged on the mounting frame through a wire pipe, the horizontal support assembly is electrically connected to a fixed control cabinet arranged on the mounting frame, and the rotating control cabinet is electrically connected to the fixed control cabinet through a gas-electric slip ring.

[0012] As a further improvement of the present invention, the centering support assembly includes a worm gear telescopic machine fixedly arranged on the lower surface of the inner support bottom plate along the radial direction of the main pump casing flange, the output end of the worm gear telescopic machine is arranged on the side away from the axis of the inner support bottom plate, and the output end is connected to one end of a horizontally arranged guide rod, the other end of the guide rod is fixedly provided with a top block, one side of the worm gear telescopic machine is provided with a telescopic servo motor driving the operation thereof, the lower surface of the inner support bottom plate is also provided with a plurality of centering laser rangefinders corresponding to the centering support assemblies one by one, and the telescopic servo motor and the centering laser rangefinder are electrically connected to the fixed control cabinet;

[0013] A concentricity detection sensor is provided on one side of the bottom of the revolving frame, and the concentricity detection sensor is electrically connected to the rotation control cabinet.

[0014] As a further improvement of the present invention, the horizontal support assembly includes an electric cylinder mounting seat, a servo electric cylinder, a ball joint support and a foot pad connected in sequence from top to bottom, the top of the electric cylinder mounting seat is fixedly connected to the mounting frame, and the servo electric cylinder is electrically connected to the fixed control cabinet;

[0015] Level detection sensors are provided on the lower edges of both sides of the rotating frame, and the level detection sensors are electrically connected to the rotating control cabinet.

[0016] As a further improvement of the present invention, a translation screw penetrating the module mounting seat and threadedly matched therewith is horizontally arranged on the module mounting seat, the translation screw is mounted on the side wall of the rotating frame through two bearing seats arranged at both ends thereof, the rotating frame is also provided with a translation servo motor for driving the translation screw to rotate axially, and translation slide rails fixedly mounted on the side wall of the rotating frame are horizontally arranged above and below the translation screw, and the module mounting seat is slidably mounted on the translation slide rails;

[0017] A lifting module is vertically arranged on the surface of the module mounting seat on a side away from the rotating frame, and a lifting servo motor for driving the lifting module to operate is arranged on one side of the lifting module.

[0018] As a further improvement of the present invention, the contour measurement module includes a rotating table arranged on the slide table of the lifting module, a contour scanner is provided at the lower part of the rotating table, and a rotating servo motor for driving the rotating table is also provided on the rotating table.

[0019] As a further improvement of the present invention, the repair module includes a cold air gun, a processing component and a monitoring camera which are sequentially arranged on a slide table of the lifting module in a horizontal direction.

[0020] As a further improvement of the present invention, an annular transmission seat coaxially arranged with the rotating shaft of the rotating frame is horizontally arranged above the rotating frame, and the bottom of the annular transmission seat is fixedly connected to the top of the rotating frame through a connecting arm, a rotating bearing is sleeved on the outer ring side of the annular transmission seat, and a bearing mounting ring sleeved and matched with the outer side of the rotating bearing is fixedly arranged at the bottom of the mounting frame;

[0021] The inner ring side of the annular transmission seat is provided with transmission teeth, and the power output end of the rotating motor is meshed with the transmission teeth through a driving gear.

[0022] As a further improvement of the present invention, a vacuum cleaner mounting seat is provided on the side wall of the rotating frame, a vacuum cleaner is provided on the vacuum cleaner mounting seat, and the air intake port of the vacuum cleaner is connected to a vacuum nozzle facing the flange sealing surface of the pump casing of the main pump through a conduit.

[0023] Beneficial Effects

[0024] Compared with the prior art, the advantages of the device for repairing the sealing surface of the main pump casing flange of the present invention are:

[0025] 1. In the equipment, the inner support platform is horizontally fixed on the inner ring side of the main pump casing flange, and the slewing mechanism is installed on the top of the inner support platform and can rotate horizontally. Therefore, with the horizontal rotation of the slewing mechanism, the contour measurement module and the repair module installed on the slewing mechanism can pass through the entire main pump casing flange sealing surface. In this process, the contour measurement module can measure various defects of the main pump casing flange sealing surface to be repaired, and provide data support for subsequent repair processing, while the repair module can repair various defects of the main pump casing flange sealing surface; since the contour measurement module and the repair module can pass through the entire main pump casing flange sealing surface, the equipment can realize the processing of the main pump casing flange sealing surface as a whole, thereby avoiding the height difference problem between the repair surface and the intact surface. At the same time, the modular design is adopted, and various modules can be installed as needed, which reduces the weight of the main equipment and improves the adaptability of the equipment. In addition, the equipment can also realize automatic and on-site processing and repair of the main pump casing flange sealing surface, thereby improving work efficiency and reducing manual operation procedures and personnel dose.

[0026] The present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, which are used to illustrate embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a three-dimensional diagram of the rotary mechanism;

[0030] Figure 3 This is a three-dimensional diagram of the slewing mechanism without the rotary control cabinet installed;

[0031] Figure 4 This is one of the installation structure diagrams of the repair module;

[0032] Figure 5 This is the second installation structure diagram of the repair module;

[0033] Figure 6 A three-dimensional diagram of the upper shelf support mechanism;

[0034] Figure 7 is a perspective view of a horizontal support assembly;

[0035] Figure 8 This is a top-down stereogram of the inner support platform;

[0036] Fig. 9 This is a three-dimensional image of the inner support platform when viewed from above;

[0037] Fig.10 A perspective view of the centering support assembly.

[0038] Among them: 1-inner support platform; 11-inner support bottom plate; 111-bottom wire hole; 12-center mounting seat; 13-wire tube; 14-origin sensor; 15-automatic tool setting instrument; 16-pneumatic sealing ring; 161-sealing ring pressure plate; 17-centering laser rangefinder; 18-support foot; 19-centering support assembly; 191-worm gear telescopic machine; 192-telescopic machine mounting plate; 193-telescopic servo motor; 194-guide rail; 195-guide rail mounting seat; 196-guide rod; 197-top block;

[0039] 2-slewing mechanism; 21-slewing base; 22-slewing frame; 221-concentricity detection sensor; 222-level detection sensor; 223-vacuum cleaner; 224-vacuum nozzle; 225-vacuum cleaner mounting seat; 226-rotation control cabinet; 23-module mounting seat; 231-translational slide rail; 232-translational screw; 233-translational servo motor; 234-lifting module; 235-lifting servo motor; 24-contour measurement module; 241-rotating table; 242-rotating servo motor; 243-contour scanner; 25-repair module; 251-cold air gun; 252-milling cutter; 253-milling cutter drive motor; 254-turning tool; 255-monitoring camera; 256-turning tool seat; 26-connecting arm; 27-annular transmission seat; 271-transmission gear; 28-slewing bearing; 29-electrical slip ring;

[0040] 3- upper support mechanism; 31- mounting frame; 32- bearing mounting ring; 33- rotary positioning encoder; 34- slip ring pipe; 35- rotating motor; 351- driving gear; 352- reducer; 36- horizontal support assembly; 361- electric cylinder mounting seat; 362- servo electric cylinder; 363- ball joint support; 364- foot pad; 37- fixed control cabinet. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of 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.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0044] Example

[0045] The specific embodiments of the present invention are as follows Figure 1 As shown, a device for repairing the sealing surface of the main pump casing flange includes an inner support platform 1 fixedly mounted horizontally on the inner ring side of the main pump casing flange, a slewing mechanism 2 capable of horizontal rotation is mounted on the top of the inner support platform 1, and the rotating shaft of the slewing mechanism 2 is coaxially arranged with the axis of the main pump casing flange. Among them, the slewing mechanism 2 is provided with a contour measurement module 24 and a repair module 25, and the contour measurement module 24 and the repair module 25 are both detachably mounted on the slewing mechanism 2. At the same time, a top support mechanism 3 is also provided on the top of the slewing mechanism 2 to prevent it from tilting and drive it to rotate.

[0046] Before using the equipment, the main pump casing must be fixed on the workbench in place, and the sealing surface of the main pump casing flange must be kept horizontally facing upward; then, the internal support platform 1 of the equipment must be fixed horizontally on the inner ring side of the main pump casing flange, and the upper support mechanism 3 must be adjusted to avoid tilting of the rotating mechanism 2 installed on the top of the internal support platform 1. When in use, the upper support mechanism 3 of the equipment drives the slewing mechanism 2 to rotate horizontally. As the slewing mechanism 2 rotates horizontally, the contour measurement module 24 and the repair module 25 installed on the slewing mechanism 2 can pass through the entire main pump casing flange sealing surface to complete the repair process - specifically: the slewing mechanism 2 first rotates one circle, and the data of the main pump casing flange sealing surface is measured by the contour measurement module 24, and the depth of the defect to be repaired is automatically calculated based on the measured data; then, based on the calculated defect depth or the manually set defect depth to be cut, the slewing mechanism 2 rotates one circle again, and the repair module 25 repairs the entire main pump casing flange sealing surface; then, the slewing mechanism 2 rotates one circle for the third time, and the data of the main pump casing flange sealing surface is measured again. Based on the measured data, it is analyzed whether all defects have been repaired and meet the use requirements. If there are still defects, the above steps are repeated to perform the repair process; finally, when the repair is completed and meets the use requirements, the fixed fit between the inner support platform 1 and the inner ring side of the main pump casing flange can be released, and the equipment can be lifted away by the trolley to complete the repair process.

[0047] In this device, since the contour measurement module 24 and the repair module 25 can pass through the entire main pump casing flange sealing surface, the device can realize the processing of the entire main pump casing flange sealing surface, thereby avoiding the problem of height difference between the repaired surface and the intact surface. At the same time, the use of a modularly designed repair module 25 also means that various modules can be installed as needed, reducing the weight of the main equipment and improving the adaptability of the equipment. In addition, the device can also realize automatic and on-site processing and repair of the main pump casing flange sealing surface, thereby improving work efficiency and reducing manual operation procedures and personnel dose.

[0048] like Figure 8-9 As shown, the inner support platform 1 includes an inner support base plate 11 which is horizontally arranged on the inner ring side of the main pump casing flange and coaxial with the main pump casing flange. A plurality of centering support assemblies 19 which are arranged around its axis and in tight contact with the inner ring side of the main pump casing flange are provided on the lower surface of the inner support base plate 11. Through the tight contact between the centering support assembly 19 and the main pump casing flange, the inner support base plate 11 can be fixed on the inner ring side of the main pump casing flange and coaxially arranged with the main pump casing flange, thereby avoiding radial deviation of the main pump casing flange from the inner support base plate 11. Similarly, in order to fix the position of the inner support base plate 11 in the axial direction of the main pump casing flange in this embodiment, a plurality of support feet 18 which are arranged around its axis are also provided on the lower surface of the inner support base plate 11 in this embodiment.

[0049] like Figure 2-5 As shown, the rotary mechanism 2 includes a rotary frame 22 which is horizontally arranged and whose bottom is axially connected to the upper surface of the inner support bottom plate 11. The rotary frame 22 is rectangular and its two long sides are arranged in pairs in the vertical direction. At the same time, the profile measurement module 24 and the repair module 25 are respectively arranged on the side walls of the rotary frame 22 through the module mounting seat 23 which can be moved horizontally. Through the module mounting seat 23, the position of the profile measurement module 24 and the repair module 25 can be adjusted radially along the main pump casing flange, so as to cooperate with the rotating rotary frame 22 to realize the detection and processing of the sealing surface of the entire main pump casing flange. In addition, the profile measurement module 24 and the repair module 25 are both detachably mounted on the module mounting seat 23, so that the appropriate combination of the profile measurement module 24 and the repair module 25 can be flexibly selected as needed, so as to meet a variety of repair requirements, thereby avoiding the stacking of a variety of measurement and repair components, reducing the weight of the main equipment and improving the adaptability of the equipment. In addition, in this embodiment, the contour measurement module 24, the repair module 25 and the module mounting seat 23 are all electrically connected to the rotation control cabinet 226 disposed on the top of the revolving frame 22. The operation of the contour measurement module 24, the repair module 25 and the module mounting seat 23 is uniformly controlled by the rotation control cabinet 226, so as to realize the automatic operation of the measurement work and the repair work.

[0050] like Figure 6As shown, the upper frame support mechanism 3 includes a mounting frame 31 rotatably connected to the top of the rotating frame 22. The edge of the mounting frame 31 is provided with a plurality of horizontal support components 36 arranged around its axis to prevent the rotating frame 22 from tilting. Through the mounting frame 31, the rotating frame 22 can be supported to prevent it from tilting, thereby ensuring the quality of repair. At the same time, in order to realize the rotation of the rotating frame 22, a rotating motor 35 that can drive the rotating frame 22 to rotate horizontally is also provided on the mounting frame 31. In this embodiment, the mounting frame 31 is mainly composed of a plurality of suspensions corresponding to the horizontal support components 36, that is, one end of the plurality of suspensions points to the axis of the mounting frame 31, and the other end is connected to the support component 36.

[0051] In this device, Figure 8 As shown, a wire passing tube 13 is provided at the axis center of the upper surface of the inner support bottom plate 11, which vertically passes through the rotating frame 22 along the rotating axis of the rotating frame 22, and a bottom wire passing hole 111 corresponding to the wire passing tube 13 is provided at the axis center of the inner support bottom plate 11 at the lower end of the wire passing tube 13. A gas-electric slip ring 29 is provided on the top of the rotating frame 22, which is sleeved on the outside of the wire passing tube 13, and the mounting frame 31 is connected to the upper end of the gas-electric slip ring 29 through a slip ring pipe 34 arranged on its axis center. Among them, the centering support assembly 19 is electrically connected to a fixed control cabinet 37 arranged on the mounting frame 31 through the wire passing tube 13, and the horizontal support assembly 36 is electrically connected to a fixed control cabinet 37 arranged on the mounting frame 31. Through the fixed control cabinet 37, the centering support assembly 19 and the horizontal support assembly 36 can be uniformly adjusted, thereby realizing automatic control and adjustment of the position of the equipment in the horizontal and vertical directions. In this embodiment, in order to achieve unified control of equipment position adjustment and repair processing adjustment, the rotating control cabinet 226 is electrically connected to the fixed control cabinet 37 through the pneumatic slip ring 29.

[0052] Regarding the specific structure of the centering support assembly 19, Figure 9-10 As shown, the centering support assembly 19 includes a worm gear telescopic machine 191 fixedly arranged on the lower surface of the inner support base plate 11 along the radial direction of the main pump casing flange, and the worm gear telescopic machine 191 is fixedly installed on the lower surface of the inner support base plate 11 through a telescopic machine mounting plate 192. The output end of the worm gear telescopic machine 191 is arranged on the side away from the axis of the inner support base plate 11, and the output end is connected to one end of a horizontally arranged guide rod 196, and the other end of the guide rod 196 is fixedly provided with a top block 197. In this embodiment, in order to guide the moving path of the guide rod 196, a guide rail 194 that slides with the outer wall of the guide rod 196 is fixedly provided on the lower surface of the inner support base plate 11 through a guide rail mounting seat 195. At the same time, in order to realize the driving operation of the worm gear telescopic machine 191, a telescopic servo motor 193 that drives its operation is provided on one side of the worm gear telescopic machine 191.

[0053] When the centering support assembly 19 adjusts the position of the equipment, a large thrust is required to drive the entire equipment to slide, and after the adjustment is completed, the centering support assembly 19 needs to be self-locked to prevent displacement. Considering the limited installation space of the equipment, the worm gear telescopic machine 191 is selected as the driving component of the centering support assembly 19. The worm gear telescopic machine 191 has the advantages of large output, self-locking, and small size. At the same time, the top block 197 uses a plastic pressing block to avoid damaging the inner surface of the main pump casing flange.

[0054] In addition, in order to provide a basis for the concentricity adjustment of the centering support assembly 19 and realize the concentric setting of the inner support base plate 11 and the main pump casing flange, a plurality of centering laser rangefinders 17 corresponding to the centering support assembly 19 are also provided on the lower surface of the inner support base plate 11. The telescopic servo motor 193 and the centering laser rangefinder 17 are electrically connected to the fixed control cabinet 37. Moreover, in order to further ensure the concentric setting of the rotating frame 22 and the main pump casing flange during subsequent repairs, a concentricity detection sensor 221 is provided on one side of the bottom of the rotating frame 22, and the concentricity detection sensor 221 is electrically connected to the rotating control cabinet 226. That is, through the centering laser rangefinder 17 and the concentricity detection sensor 221, secondary concentric position adjustment can be achieved to ensure the repair accuracy.

[0055] As for the specific structure of the horizontal support assembly 36, Figure 7 As shown, the horizontal support assembly 36 includes an electric cylinder mounting seat 361, a servo electric cylinder 362, a ball joint support 363 and a foot pad 364 which are connected in sequence from top to bottom. The top of the electric cylinder mounting seat 361 is fixedly connected to the mounting frame 31, and the servo electric cylinder 362 is electrically connected to the fixed control cabinet 37. Horizontal detection sensors 222 are provided on the lower edges of both sides of the rotating frame 22, and the horizontal detection sensors 222 are electrically connected to the rotating control cabinet 226. Through the horizontal detection sensor 222, it can be detected whether the rotating frame 22 is parallel to the flange sealing surface of the main pump casing, so that the fixed control cabinet 37 can adjust the servo electric cylinder 362 according to the detection data of the horizontal detection sensor 222, thereby eliminating the parallelism deviation between the rotating frame 22 and the flange sealing surface of the main pump casing. At the same time, the reason why the ball joint support 363 is selected to connect the servo electric cylinder 362 and the foot pad 364 in this embodiment is that the ball joint support 363 can ensure that no matter how the servo electric cylinder 362 is extended or retracted, the foot pad 364 is in close contact with the main pump casing flange, thereby making the equipment stable.

[0056] In order to adjust the horizontal position of the measuring module 24 and the repairing module 25, as shown in FIG. Figure 3-5As shown, a translation screw 232 that penetrates the module mounting seat 23 and is threadedly matched with the module mounting seat 23 is horizontally provided on the module mounting seat 23, and the translation screw 232 is installed on the side wall of the rotating frame 22 through two bearing seats disposed at both ends thereof. A translation servo motor 233 for driving the translation screw 232 to rotate axially is also provided on the rotating frame 22. The translation servo motor 233 is electrically connected to the rotation control cabinet 226. The translation screw 232 is driven to rotate by the translation servo motor 233, which can drive the module mounting seat 23 to move horizontally. At the same time, in order to ensure the stability of the horizontal movement of the module mounting seat 23, a translation slide rail 231 fixedly mounted on the side wall of the rotating frame 22 is horizontally provided above and below the translation screw 232, and the module mounting seat 23 is slidably mounted on the translation slide rail 231. In this embodiment, in order to achieve vertical position adjustment of the measuring module 24 and the repairing module 25, a lifting module 234 is vertically provided on the surface of the module mounting seat 23 away from the rotating frame 22, and a lifting servo motor 235 for driving the lifting module 234 is provided on one side. The lifting servo motor 235 is also electrically connected to the rotation control cabinet 226.

[0057] Regarding the profile measurement module 24, the profile measurement module 24 includes a rotating table 241 disposed on the slide of the lifting module 234. A profile scanner 243 is disposed at the lower part of the rotating table 241, and a rotation servo motor 242 for driving the rotating table 241 is also disposed on the rotating table 241. In this embodiment, the profile scanner 243 and the rotation servo motor 242 are both electrically connected to the rotation control cabinet 226.

[0058] Regarding the repair module 25, the repair module 25 includes a cold air gun 251, a processing component and a monitoring camera 255 which are sequentially arranged on the slide of the lifting module 234 in the horizontal direction. Among them, the processing component should be selected according to the specific repair processing needs, such as a milling component composed of a milling cutter 252 and a milling cutter driving motor 252, or a turning component composed of a turning tool 254 and a turning tool seat 256.

[0059] Regarding the transmission connection between the revolving frame 22 and the mounting frame 31, as shown in FIG. Figure 3As shown, an annular transmission seat 27 coaxially arranged with the rotating shaft of the rotating frame 22 is horizontally arranged above the rotating frame 22, and the bottom of the annular transmission seat 27 is fixedly connected to the top of the rotating frame 22 through a connecting arm 26. A slewing bearing 28 is sleeved on the outer ring side of the annular transmission seat 27, and a bearing mounting ring 32 sleeved and matched with the outer side of the slewing bearing 28 is fixedly arranged at the bottom of the mounting frame 31. At the same time, in order to drive the annular transmission seat 27 to rotate in the bearing mounting ring 32, a transmission tooth 271 is arranged on the inner ring side of the annular transmission seat 27, and the power output end of the rotating motor 35 is meshed with the transmission tooth 271 through a driving gear 351. In this embodiment, the power output end of the rotating motor 35 is connected to the driving gear 351 through a reducer 352. At the same time, a rotary positioning encoder 33 is also arranged on the mounting frame 31.

[0060] As for the rotation connection between the slewing frame 22 and the inner support base plate 11, a slewing base 21 coaxial with the annular transmission base 27 is provided at the bottom of the slewing frame 22, and a base bearing is sleeved on the outer side of the slewing base 21. Corresponding to the slewing base 21, a central mounting seat 12 sleeved with the outer side of the base bearing is fixedly provided on the upper surface of the inner support base plate 11. In this embodiment, an origin sensor 14 and an automatic tool setting instrument 15 are also provided on the upper surface of the inner support base plate 11.

[0061] It should be noted that:

[0062] In order to prevent debris generated during the repair process from falling under the inner support bottom plate 11, an inflatable pneumatic seal ring 16 is provided on the edge of the inner support bottom plate 11. The gap between the edge of the inner support bottom plate 11 and the main pump housing flange can be blocked by the inflation of the pneumatic seal ring 16. In this embodiment, in order to install the pneumatic seal ring 16, a seal ring pressing plate 161 is also provided on the edge of the inner support bottom plate 11.

[0063] At the same time, in order to further handle the debris generated during the repair process, a vacuum cleaner mounting seat 225 is also provided on the side wall of the rotating frame 22. A vacuum cleaner 223 is provided on the vacuum cleaner mounting seat 22, and the air intake of the vacuum cleaner 223 is connected to a vacuum nozzle 224 facing the flange sealing surface of the main pump housing through a conduit.

[0064] When the equipment is in use, it includes positioning workflow and processing workflow, among which the positioning workflow is as follows:

[0065] S1. Lift the equipment onto the flange sealing surface of the main pump casing and insert the aviation plug;

[0066] S2, start the automatic installation and positioning program;

[0067] S3, the horizontal support assembly 36 of the control device is extended to a certain distance to leave adjustment space;

[0068] S4, start the horizontal detection sensor 222 on the revolving frame 22 to measure the distance, and the revolving frame 22 rotates one circle to automatically calculate the parallelism deviation between the equipment and the flange sealing surface of the main pump casing;

[0069] S5. According to the parallelism deviation, adjust the three horizontal support assemblies 36 so that the equipment is parallel to the flange sealing surface of the main pump casing;

[0070] S6, start the three centering laser rangefinders 17 on the inner support base plate 11, and automatically calculate the center position deviation between the inner support base plate 11 and the inner wall of the main pump casing flange;

[0071] S7. According to the center position deviation, the three centering support assemblies 19 are automatically adjusted so that the rotation center of the equipment coincides with the center of the inner wall of the flange of the main pump casing, and the top block 197 of the centering support assembly 19 is supported tightly against the inner wall of the main pump casing, thereby preventing the equipment from moving;

[0072] S8, start the horizontal detection sensor 222 on the revolving frame 22, the concentricity sensor 221 and the centering laser rangefinder 17 on the inner support base plate 11 to measure the distance again, and automatically calculate the parallelism deviation and the center position deviation;

[0073] S9. According to the measured parallelism deviation and center position deviation, automatically check whether the parallelism deviation of the equipment installation and the center deviation between the equipment and the inner wall of the pump casing of the main pump are within the specified deviation range. If not, execute the installation positioning procedure again. If within the deviation range, start the repair processing operation;

[0074] S10, the pneumatic sealing ring 16 is inflated to seal the main pump casing flange, completing the installation and positioning.

[0075] The processing flow is as follows:

[0076] S1. First, execute the installation positioning procedure and wait for the equipment to be automatically installed and adjusted into place;

[0077] S2. Install the turning tool module, and the equipment automatically calibrates the tool to measure the installed length of the turning tool;

[0078] S3. Adjust the profile scanner 243 to a suitable position, rotate the device for one circle, and measure the data of the sealing surface of the main pump casing flange;

[0079] S4. Automatically calculate the defect depth of the surface to be repaired based on the measured data;

[0080] S5. Automatically perform repair processing according to the calculated defect depth or the manually set defect depth to be cut;

[0081] S6, rotating the profile scanner 243 once again to measure the data of the sealing surface of the main pump casing flange;

[0082] S8. Analyze whether all defects have been repaired and meet the use requirements according to the measurement data. If there are still defects, repeat the above steps to perform repair processing;

[0083] S9. After the repair is completed and meets the use requirements, the top block 197 of the centering support assembly 19 is retracted, the gas in the pneumatic sealing ring 16 is released, and then the horizontal support assembly 36 is retracted, and all the aviation plugs are removed;

[0084] S10. Use a crane to lift the equipment away and complete the repair process.

[0085] The present invention has been described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A device for repairing the flange sealing surface of a main pump casing, characterized in that: The invention comprises an inner support platform (1) fixedly arranged horizontally on the inner ring side of the flange of the pump casing of the main pump, a slewing mechanism (2) capable of horizontal rotation is installed on the top of the inner support platform (1), a contour measurement module (24) and a repair module (25) are arranged on the slewing mechanism (2), and an upper frame support mechanism (3) capable of preventing the slewing mechanism (2) from tilting and driving the slewing mechanism to rotate is arranged on the top of the slewing mechanism (2).

2. The equipment for repairing the main pump casing flange sealing surface according to claim 1 is characterized in that: The inner support platform (1) comprises an inner support base plate (11) horizontally arranged on the inner ring side of the main pump casing flange and coaxial with the main pump casing flange, and a plurality of centering support assemblies (19) arranged around the axis thereof and in tight contact with the inner ring side of the main pump casing flange are arranged on the lower surface of the inner support base plate (11); The slewing mechanism (2) comprises a slewing frame (22) which is arranged horizontally and whose bottom is axially rotatably connected to the upper surface of the inner support bottom plate (11); the contour measurement module (24) and the repair module (25) are respectively arranged on the side walls of the slewing frame (22) through a module mounting seat (23) which can move horizontally; the contour measurement module (24), the repair module (25) and the module mounting seat (23) are all electrically connected to a rotation control cabinet (226) arranged on the top of the slewing frame (22); The upper frame support mechanism (3) comprises a mounting frame (31) rotatably connected to the top of the rotating frame (22); the edge of the mounting frame (31) is provided with a plurality of horizontal support components (36) arranged around its axis for preventing the rotating frame (22) from tilting; the mounting frame (31) is also provided with a rotating motor (35) capable of driving the rotating frame (22) to rotate horizontally.

3. The equipment for repairing the main pump casing flange sealing surface according to claim 2 is characterized in that: A wire passing tube (13) vertically passing through the rotating frame (22) along the rotating axis of the rotating frame (22) is provided at the axis center of the upper surface of the inner support bottom plate (11); a gas-electric slip ring (29) sleeved on the outside of the wire passing tube (13) is provided at the top of the rotating frame (22); and the mounting frame (31) is connected to the upper end of the gas-electric slip ring (29) via a slip ring pipe (34) provided at the axis center thereof; The centering support assembly (19) is electrically connected to a fixed control cabinet (37) disposed on a mounting frame (31) through a wire tube (13); the horizontal support assembly (36) is electrically connected to a fixed control cabinet (37) disposed on the mounting frame (31); and the rotating control cabinet (226) is electrically connected to the fixed control cabinet (37) through a pneumatic slip ring (29).

4. The equipment for repairing the main pump casing flange sealing surface according to claim 3 is characterized in that: The centering support assembly (19) comprises a worm gear telescopic machine (191) fixedly arranged on the lower surface of the inner support base plate (11) along the radial direction of the main pump casing flange, the output end of the worm gear telescopic machine (191) is arranged on a side away from the axis of the inner support base plate (11), and the output end is connected to one end of a horizontally arranged guide rod (196), the other end of the guide rod (196) is fixedly provided with a top block (197), one side of the worm gear telescopic machine (191) is provided with a telescopic servo motor (193) for driving the operation thereof, and the lower surface of the inner support base plate (11) is also provided with a plurality of centering laser rangefinders (17) corresponding to the centering support assembly (19) one by one, and the telescopic servo motor (193) and the centering laser rangefinder (17) are electrically connected to a fixed control cabinet (37); A concentricity detection sensor (221) is provided on one side of the bottom of the revolving frame (22), and the concentricity detection sensor (221) is electrically connected to a rotation control cabinet (226).

5. The equipment for repairing the main pump casing flange sealing surface according to claim 3 or 4, characterized in that: The horizontal support assembly (36) comprises an electric cylinder mounting seat (361), a servo electric cylinder (362), a ball joint support (363) and a foot pad (364) which are connected in sequence from top to bottom, the top of the electric cylinder mounting seat (361) is fixedly connected to the mounting frame (31), and the servo electric cylinder (362) is electrically connected to the fixed control cabinet (37); Horizontal detection sensors (222) are provided on the lower edges of both sides of the revolving frame (22), and the horizontal detection sensors (222) are electrically connected to the rotation control cabinet (226).

6. The equipment for repairing the main pump casing flange sealing surface according to claim 2, characterized in that: A translation screw (232) penetrating the module mounting seat (23) and threadedly engaged with the module mounting seat (23) is horizontally arranged on the module mounting seat (23); the translation screw (232) is mounted on the side wall of the rotating frame (22) via two bearing seats disposed at both ends thereof; a translation servo motor (233) for driving the translation screw (232) to rotate axially is also disposed on the rotating frame (22); translation rails (231) fixedly mounted on the side wall of the rotating frame (22) are horizontally arranged above and below the translation screw (232); the module mounting seat (23) is slidably mounted on the translation rails (231); A lifting module (234) is vertically provided on the surface of the module mounting seat (23) on a side away from the rotating frame (22), and a lifting servo motor (235) for driving the lifting module (234) to operate is provided on one side of the lifting module (234).

7. The equipment for repairing the main pump casing flange sealing surface according to claim 6, characterized in that: The contour measurement module (24) comprises a rotating platform (241) arranged on a slide of a lifting module (234), a contour scanner (243) is arranged at the lower part of the rotating platform (241), and a rotating servo motor (242) for driving the rotating platform (241) is also arranged on the rotating platform (241).

8. The equipment for repairing the main pump casing flange sealing surface according to claim 6 or 7, characterized in that: The repair module (25) comprises a cold air gun (251), a processing component and a monitoring camera (255) which are sequentially arranged on a slide table of a lifting module (234) in a horizontal direction.

9. The equipment for repairing the main pump casing flange sealing surface according to claim 2, characterized in that: An annular transmission seat (27) is horizontally arranged above the rotating frame (22) and is coaxially arranged with the rotating shaft of the rotating frame (22), and the bottom of the annular transmission seat (27) is fixedly connected to the top of the rotating frame (22) through a connecting arm (26), a rotating bearing (28) is sleeved on the outer ring side of the annular transmission seat (27), and a bearing mounting ring (32) sleeved and matched with the outer side of the rotating bearing (28) is fixedly arranged at the bottom of the mounting frame (31); The inner ring side of the annular transmission seat (27) is provided with transmission teeth (271), and the power output end of the rotating motor (35) is meshed with the transmission teeth (271) through a driving gear (351).

10. The equipment for repairing the main pump casing flange sealing surface according to claim 2, characterized in that: A dust collector mounting seat (225) is also provided on the side wall of the revolving frame (22), and a dust collector (223) is provided on the dust collector mounting seat (22). The air intake port of the dust collector (223) is connected to a dust suction nozzle (224) facing the flange sealing surface of the pump housing of the main pump through a conduit.

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