Fixing base for main pump shell flange sealing surface repairing equipment

Abstract

The utility model discloses a fixing base for main pump shell flange sealing surface repairing equipment, relates to the technical field of main pump shell flange sealing surface repairing, and mainly aims at solving the problem that relative displacement is likely to be generated between a main pump shell and the repairing equipment in the repairing process. According to the main structure, the device comprises an inner supporting platform, the inner supporting platform comprises an inner supporting bottom plate coaxial with a main pump shell flange, the lower surface of the inner supporting bottom plate is provided with a plurality of centering supporting assemblies which are arranged around the axis of the inner supporting bottom plate and make abutting contact with the inner ring side of the main pump shell flange, and the upper surface of the inner supporting bottom plate is provided with a center mounting base arranged around the axis of the inner supporting bottom plate. According to the fixing base for the main pump shell flange sealing face repairing equipment, the repairing equipment can be stably and fixedly installed on a main pump shell through the fixing base, so that relative displacement of the repairing equipment and the main pump shell is avoided, and the repairing quality of the main pump shell flange sealing face is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to main pump pump shell flange sealing surface repair technical field especially relates to a kind of fixed base for main pump pump shell flange sealing surface repair equipment. BACKGROUND

[0002] Main pump pump shell flange sealing surface is one loop pressure important boundary, and its sealing quality and reliability directly influence the safe and stable operation of main pump and reactor. Since main pump is operated in high temperature, high pressure and has high environment of medium for a long time, repeatedly withstands the thermal shock and mechanical impact of one loop coolant, various defects (including corrosion, crack, indentation and deformation etc.) are generated on main pump pump shell flange sealing surface, thereby seriously influence the integrity of main pump pressure boundary. Therefore, to ensure the safety of main pump operation, main pump hydraulic components and pump shell are overhauled after several operating cycles, and one of the most important work is to detect and repair main pump pump shell flange sealing surface.

[0003] Since main pump pump shell is large in size, heavy in weight and radioactive, it is difficult to be transferred to conventional fixed workbench for fixing, and can only be processed and repaired on site. However, main pump pump shell is not fixed, and relative displacement may be generated between main pump pump shell and repair equipment during repair process, thereby affecting the repair quality of main pump pump shell flange sealing surface.

[0004] Therefore, a new fixing device needs to be used to fix repair equipment above main pump pump shell flange sealing surface. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of fixed base for main pump pump shell flange sealing surface repair equipment, through the device, repair equipment can be stably fixed and installed on main pump pump shell, so as to avoid the relative displacement of the two, and thereby ensure the repair quality of main pump pump shell flange sealing surface.

[0006] The technical scheme that the utility model solves above-mentioned technical problem is as follows: a kind of fixed base for main pump pump shell flange sealing surface repair equipment, including inner support platform, the inner support platform includes a level setting in the inner ring side of main pump pump shell flange and with the coaxial inner support bottom plate of main pump pump shell flange, the lower surface of the inner support bottom plate is equipped with multiple centering support components around its axle and with the inner ring side of main pump pump shell flange top contact, the upper surface of the inner support bottom plate is equipped with the center mounting seat around its axle.

[0007] As a further improvement of the utility model, the centering support component includes a worm gear telescopic machine radially fixed on the lower surface of the inner support bottom plate along the main pump pump shell flange, the output end of the worm gear telescopic machine is set on the side away from the axle of the inner support bottom plate, and the output end is connected with one end of a level setting guide rod, and the other end of the guide rod is fixed with a top block.

[0008] The worm gear telescopic machine is provided with a telescopic servo motor for driving the operation thereof, the lower surface of the inner support bottom plate is further provided with a plurality of centering laser range finders corresponding to the centering support assemblies, and the telescopic servo motor, the centering laser range finders and the controller of the repairing device are electrically connected.

[0009] As a further improvement of the utility model, the worm gear telescopic machine is fixedly installed on the lower surface of the inner support bottom plate through the telescopic machine mounting plate, and the lower surface of the inner support bottom plate is fixedly provided with guide rails in sliding fit with the outer walls of the guide rods through the guide rail mounting seats.

[0010] As a further improvement of the utility model, the top block is a plastic pressing block.

[0011] As a further improvement of the utility model, a wire passing pipe is vertically arranged at the center of the mounting seat on the upper surface of the inner support bottom plate, and a bottom wire passing hole corresponding to the wire passing pipe is arranged at the center of the inner support bottom plate at the lower end of the wire passing pipe.

[0012] As a further improvement of the utility model, the edge of the inner support bottom plate is provided with a pneumatic sealing ring inflated and expanded.

[0013] As a further improvement of the utility model, the edge of the inner support bottom plate is further provided with a sealing ring pressing plate.

[0014] As a further improvement of the utility model, the lower surface of the inner support bottom plate is provided with a plurality of support feet arranged around the center thereof.

[0015] As a further improvement of the utility model, the upper surface of the inner support bottom plate is further provided with an origin sensor.

[0016] As a further improvement of the utility model, the upper surface of the inner support bottom plate is further provided with an automatic tool setting instrument.

[0017] Advantages

[0018] Compared with the prior art, the fixing base for the main pump shell flange sealing surface repairing device has the following advantages:

[0019] 1. In the device, the inner support bottom plate is firmly fixed in the inner ring side of the main pump pump shell flange and coaxially arranged with the main pump pump shell flange through the tight contact of the centering support assembly with the main pump pump shell flange, so that the inner support bottom plate is prevented from deviating in the radial direction of the main pump pump shell flange. Therefore, the repair equipment installed on the center mounting seat can be stably and fixedly installed on the main pump pump shell, so that relative displacement of the main pump pump shell and the repair equipment during machining is avoided, and the repair quality of the sealing surface of the main pump pump shell flange is ensured. At the same time, since the inner support bottom plate is coaxially arranged with the main pump pump shell flange and the center mounting seat is arranged at the axis of the inner support bottom plate, the repair of the entire sealing surface of the main pump pump shell flange can be realized by rotating the repair equipment with the center mounting seat as the rotation center, and the repair is more convenient.

[0020] The present application will become more apparent from the following description when taken in conjunction with the accompanying drawings, which are intended to illustrate and not to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0022] Fig. 1 It is a top view of the present application;

[0023] Fig. 2 It is a bottom view of the present application;

[0024] Fig. 3 It is a perspective view of the centering support assembly.

[0025] 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 pressing plate; 17-centering laser range finder; 18-supporting foot; 19-centering support assembly; 191-worm and 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. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0029] Example

[0030] The specific embodiments of this utility model are as follows: Figs. 1-3 As shown, a fixed base for a main pump casing flange sealing surface repair device includes an inner support platform 1. The inner support platform 1 includes an inner support base plate 11 horizontally disposed on the inner ring side of the main pump casing flange and coaxial with the main pump casing flange. The lower surface of the inner support base plate 11 is provided with a plurality of centering support components 19 arranged around its axis and in tight contact with the inner ring side of the main pump casing flange. The upper surface of the inner support base plate 11 is provided with a central mounting seat 12 arranged around its axis. In this embodiment, the lower surface of the inner support base plate 11 is provided with a plurality of support feet 18 arranged around its axis.

[0031] Before using the equipment, the sealing surface of the main pump casing flange must be set horizontally upwards. Then, the inner support base plate 11 is horizontally placed into the inner ring side of the main pump casing flange, and the inner support base plate 11 is fixed to the inner ring side of the main pump casing flange and coaxially arranged with the main pump casing flange by the centering support assembly 19 and the main pump casing flange, so as to avoid the inner support base plate 11 from being offset radially from the main pump casing flange. At the same time, the inner support base plate 11 can also be fixed in the axial direction of the main pump casing flange by the support feet 18. After that, the repair equipment installed on the center mounting base 12 can repair the sealing surface of the main pump casing flange. Finally, when the repair is completed and meets the usage 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 repair equipment along with this device can be lifted away by the overhead crane to complete the repair.

[0032] This device, through the centering support assembly 19 and support feet 18, can firmly fix the inner support base plate 11 to the inner ring side of the main pump casing flange and set coaxially with the main pump casing flange, preventing radial and axial displacement of the inner support base plate 11 from occurring. Therefore, the repair equipment mounted on the central mounting base 12 can be stably fixed on the main pump casing, thus preventing relative displacement between the main pump casing and the repair equipment during processing, thereby ensuring the repair quality of the main pump casing flange sealing surface. Simultaneously, since the inner support base plate 11 is coaxial with the main pump casing flange, and the central mounting base 12 is located at the axis of the inner support base plate 11, the entire main pump casing flange sealing surface can be repaired simply by rotating the repair equipment around the central mounting base 12, making the repair process more convenient.

[0033] Regarding the specific structure of the central support component 19, as follows: Fig. 3 As shown, the centering support assembly 19 includes a worm gear telescopic mechanism 191 radially fixed to the lower surface of the inner support base plate 11 along the main pump casing flange. The worm gear telescopic mechanism 191 is fixedly mounted on the lower surface of the inner support base plate 11 via a telescopic mechanism mounting plate 192. The output end of the worm gear telescopic mechanism 191 is located on the side away from the axis of the inner support base plate 11, and this output end is connected to one end of a horizontally arranged guide rod 196. The other end of the guide rod 196 is fixed with a top block 197. In this embodiment, to guide the movement path of the guide rod 196, a guide rail 194 that slides against the outer wall of the guide rod 196 is fixed to the lower surface of the inner support base plate 11 via a guide rail mounting seat 195. Simultaneously, to drive the worm gear telescopic mechanism 191, a telescopic servo motor 193 is provided on one side of the worm gear telescopic mechanism 191 to drive its operation.

[0034] Because adjusting the position of the centering support assembly 19 requires a large thrust to slide the entire device, and the centering support assembly 19 needs to self-lock to prevent displacement after adjustment, considering the limited installation space, a worm gear telescopic mechanism 191 is selected as the driving component of the centering support assembly 19—the worm gear telescopic mechanism 191 has advantages such as large output, self-locking, and small size. Meanwhile, the top block 197 is a plastic pressure block, which can avoid damaging the inner surface of the main pump casing flange.

[0035] In addition, to provide a basis for adjusting the concentricity of the centering support assembly 19 and to achieve the concentric setting of the inner support base plate 11 and the main pump casing flange, the lower surface of the inner support base plate 11 is also equipped with multiple centering laser rangefinders 17 corresponding one-to-one with the centering support assembly 19. The telescopic servo motor 193, the centering laser rangefinders 17 and the controller of the repair equipment are electrically connected.

[0036] In this embodiment, in order to realize the control of the telescopic servo motor 193, the centering laser range finder 17 and the controller of the repair equipment, a wire passing pipe 13 is vertically arranged on the upper surface of the inner support bottom plate 11 and located at the center of the shaft of the center mounting seat 12. A bottom wire passing hole 11 corresponding to the wire passing pipe 13 is arranged at the center of the shaft of the inner support bottom plate 11 at the lower end of the wire passing pipe 13. The control wires of the telescopic servo motor 193 and the centering laser range finder 17 are connected with the controller of the repair equipment through the bottom wire passing hole 11 and the wire passing pipe 13. Through the connection of the controller of the repair equipment, multiple centering support assemblies 19 can be uniformly adjusted, and then the automatic control and adjustment of the position in the horizontal direction of the equipment can be realized.

[0037] It should be noted that:

[0038] In order to avoid that the debris generated in the repair process falls below the inner support bottom plate 11, an inflatable pneumatic sealing ring 16 is arranged on the edge of the inner support bottom plate 11. Through the inflation of the pneumatic sealing ring 16, the gap between the edge of the inner support bottom plate 11 and the flange of the main pump pump shell can be blocked. In this embodiment, in order to install the pneumatic sealing ring 16, a sealing ring pressing plate 161 is further arranged on the edge of the inner support bottom plate 11.

[0039] In this embodiment, the upper surface of the inner support bottom plate 11 is further provided with a zero point sensor 14. At the same time, the upper surface of the inner support bottom plate 11 is further provided with an automatic tool setting instrument 15.

[0040] When the equipment is used, the working process includes the following steps:

[0041] S1, hoist the repair equipment to the sealing surface of the main pump pump shell flange, and insert the navigation plug;

[0042] S2, start the three centering laser range finders 17 on the inner support bottom plate 11, and automatically calculate the center position deviation of the inner support bottom plate 11 and the inner wall of the main pump pump shell flange;

[0043] S3, according to the center position deviation, the controller of the repair equipment controls and adjusts the three centering support assemblies 19, so that the inner support bottom plate 11 and the inner wall of the main pump pump shell flange are coincided, and the top block 197 of the centering support assembly 19 is tightly supported on the inner wall of the main pump pump shell, thereby preventing the equipment from moving;

[0044] S4, inflate the pneumatic sealing ring 16 to seal the main pump pump shell flange, and complete the installation and positioning.

[0045] S5, the repair equipment performs repair work;

[0046] S6, after the repair is completed and meets the use requirements, the top block 197 of the centering support assembly 19 is withdrawn, the gas in the pneumatic sealing ring 16 is released, and all the navigation plugs are removed;

[0047] S7, use the navigation car to hoist the equipment away, and complete the repair processing.

[0048] The utility model has been described above in combination with the best embodiment, but the utility model is not limited to the above disclosed embodiment, and should cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. A fixing base for a main pump case flange seal face repair device, characterized by, The inner support platform (1) comprises an inner support bottom plate (11) arranged horizontally in the inner ring side of the main pump shell flange and coaxial with the main pump shell flange, the lower surface of the inner support bottom plate (11) is provided with a plurality of centering support assemblies (19) arranged around the axis and in contact with the top of the inner ring side of the main pump shell flange, and the upper surface of the inner support bottom plate (11) is provided with a center mounting seat (12) arranged around the axis.

2. The fixed base for a main pump case flange face repair apparatus according to claim 1, wherein The centering support assembly (19) comprises a worm gear telescopic machine (191) arranged radially on the lower surface of the inner support bottom plate (11) and fixed to the main pump shell flange, the output end of the worm gear telescopic machine (191) is arranged away from the axis of the inner support bottom plate (11), and the other end of the output end is connected with one end of a guide rod (196) arranged horizontally, and the other end of the guide rod (196) is fixed 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 of the worm gear telescopic machine (191), and the lower surface of the inner support bottom plate (11) is further provided with a plurality of centering laser range finders (17) corresponding to the centering support assemblies (19), and the telescopic servo motor (193), the centering laser range finders (17) and the controller of the repair equipment are electrically connected.

3. The fixed base for a main pump case flange seal face repair apparatus of claim 2, wherein, The worm gear telescopic machine (191) is fixedly installed on the lower surface of the inner support bottom plate (11) through a telescopic machine mounting plate (192), and the lower surface of the inner support bottom plate (11) is fixedly provided with a guide rail (194) slidingly matched with the outer wall of the guide rod (196) through a guide rail mounting seat (195).

4. The main pump case flange seal face repair apparatus mounting base of claim 2, wherein, The top block (197) is a plastic pressing block.

5. The fixed base for a main pump case flange face repair apparatus according to any one of claims 1 to 4, characterized in that, A wire passing pipe (13) is vertically arranged at the axis of the center mounting seat (12) on the upper surface of the inner support bottom plate (11), and a bottom wire passing hole (111) corresponding to the wire passing pipe (13) is arranged at the axis of the inner support bottom plate (11) at the lower end of the wire passing pipe (13).

6. The fixed base for a main pump case flange seal face repair apparatus of claim 1, wherein, A pneumatic sealing ring (16) inflated by air is arranged on the edge of the inner support bottom plate (11).

7. The fixed base for a main pump case flange seal face repair apparatus of claim 6, wherein, A sealing ring pressing plate (161) is further arranged on the edge of the inner support bottom plate (11).

8. The fixed base for a main pump case flange seal face repair apparatus of claim 1, wherein, A plurality of support feet (18) are arranged around the axis of the inner support bottom plate (11) on the lower surface of the inner support bottom plate (11).

9. The fixed base for a main pump case flange seal face repair apparatus of claim 1, wherein, An origin sensor (14) is further arranged on the upper surface of the inner support bottom plate (11).

10. The fixed base for a main pump case flange seal face repair apparatus of claim 1, wherein, An automatic tool setting instrument (15) is further arranged on the upper surface of the inner support bottom plate (11).

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