Disassembling, assembling and transferring device for valve bearing chamber of nuclear power plant

Abstract

The utility model discloses a nuclear power plant valve bearing chamber disassembling, assembling and transferring device which comprises a first moving frame and a second moving frame. The first moving frame is provided with first moving wheels, a first bearing assembly and a second bearing assembly are arranged on the first moving frame, the first bearing assembly comprises a first bearing seat, and first bearing wheels are arranged on the first bearing seat; the second bearing assembly comprises second bearing seats, and each second bearing seat is provided with a second bearing wheel; a first guide rail is arranged on the first moving frame; the second moving frame is provided with second moving wheels and a sliding seat, and the second moving frame is further provided with a lifting platform used for supporting a nuclear power plant valve bearing chamber. The device can realize the transfer of the valve body of the nuclear power plant valve, especially a large gate valve, and the disassembly and assembly inspection of the bearing chamber of the nuclear power plant valve, and can effectively shorten the staying time of workers in a high-dose area, thereby reducing the irradiation dose of the workers, and reducing the safety risk of the workers. And the disassembly and maintenance efficiency of the nuclear power plant valve bearing chamber can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nuclear power technology field especially relates to a nuclear power plant valve bearing chamber dismounting transfer device. BACKGROUND

[0002] In nuclear power plant, for the valve of high dose area of nuclear power plant especially large gate valve, need to carry out periodic calibration and overhaul during overhaul, usually first remove valve cover, whole hoist after then carry out overhaul, overhaul process completely relies on manual operation. Since the whole weight of upper valve cover part of large gate valve is big, it is time-consuming and laborious in carrying process, manual operation is difficult in the process of dismounting nuclear power plant valve bearing chamber etc. during overhaul, and has certain safety risk, high dose area operation and contact with radioactive valve parts etc. can cause personnel to receive high radiation dose. SUMMARY

[0003] The utility model solves the technical problem, and provides a nuclear power plant valve bearing chamber dismounting transfer device.

[0004] The utility model adopts the technical scheme in the technical problem of solving its technical problem: construct a nuclear power plant valve bearing chamber dismounting transfer device, including first mobile frame and second mobile frame,

[0005] First mobile frame is equipped with first mobile wheel, first mobile frame is equipped with first bearing assembly and second bearing assembly, first bearing assembly and second bearing assembly are spaced apart along the length direction of first mobile frame, first bearing assembly includes two first bearing seats that are oppositely arranged, first bearing wheel is arranged on each first bearing seat, second bearing assembly includes two second bearing seats that are oppositely arranged, second bearing wheel is arranged on each second bearing seat, first bearing wheel and second bearing wheel jointly bear the valve body of nuclear power plant valve, first mobile frame is also equipped with two first guide rails that are extended along its length direction,

[0006] Second mobile frame is arranged close to the side of second bearing assembly, second mobile frame is equipped with second mobile wheel, second mobile frame is equipped with sliding seat that can be movably installed on first guide rail, second mobile frame is also equipped with lifting platform for supporting nuclear power plant valve bearing chamber.

[0007] In some embodiments, the sliding seat is connected to the first guide rail through a first sliding block.

[0008] In some embodiments, first mobile frame is also equipped with two second guide rails, two second guide rails are extended along the length direction of first mobile frame, and two second guide rails are symmetrically arranged on the outer side of two first guide rails, and the first bearing seat is movably installed on the second guide rail.

[0009] In some embodiments, the second moving frame comprises two support rods arranged in parallel with each other and at least one connecting rod connecting the two support rods; the sliding seat is connected with the support rods.

[0010] The second moving wheel is mounted on the connecting rod.

[0011] In some embodiments, the end of the mounting shaft of the at least one first bearing wheel is provided with a driven gear, and the first moving frame is provided with a driving motor, and the output end of the driving motor is provided with a driving gear meshing with the driven gear.

[0012] In some embodiments, the driving motor comprises a servo motor.

[0013] In some embodiments, the lifting platform is provided with two support plates, and the support plates are provided with arc-shaped grooves matched with the outer side of the valve bearing chamber of the nuclear power plant.

[0014] In some embodiments, the lifting platform comprises a scissor lifting platform.

[0015] In some embodiments, the first moving frame is a square structure.

[0016] In some embodiments, the first moving frame and / or the second moving frame are further provided with a handle.

[0017] The nuclear power plant valve bearing chamber dismounting and transferring device can realize the transfer of the valve body of the nuclear power plant valve, especially the large gate valve, and the dismounting, inspection and repair of the nuclear power plant valve bearing chamber, can effectively shorten the time of the staff staying in the high-dose area, thereby reducing the radiation dose of the staff and reducing the safety risk of the staff. In addition, compared with the manual dismounting and carrying of the nuclear power plant valve bearing chamber by the staff, the assistance of the nuclear power plant valve bearing chamber dismounting and transferring device can improve the dismounting, inspection and repair efficiency of the nuclear power plant valve bearing chamber. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the present application, the present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:

[0019] Figure 1 is one of the structure schematic diagrams of the nuclear power plant valve bearing chamber dismounting and transferring device in some embodiments of the present application;

[0020] Figure 2 Figure 2 is a structural schematic diagram of a nuclear power plant valve bearing chamber dismounting and transferring device in some embodiments of the present application;

[0021] Figure 3 Figure 3 is an application schematic diagram of a nuclear power plant valve bearing chamber dismounting and transferring device in some embodiments of the present application;

[0022] Figure 4 Figure 4 is an application schematic diagram of a nuclear power plant valve bearing chamber dismounting and transferring device in some embodiments of the present application;

[0023] Figure 5 Figure 5 is an application schematic diagram of a nuclear power plant valve bearing chamber dismounting and transferring device in some embodiments of the present application. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail" and the like are based on the directions or positional relationships shown in the drawings, constructed and operated in a particular direction, and are only for the convenience of describing the present technical solution, and cannot be understood as indicating that the devices or elements referred to must have a particular direction, therefore, it cannot be understood as a limitation on the present application.

[0025] It should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" located on the other element, or there can be one or more intermediate elements. The terms "first", "second", "third" and the like are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features with "first", "second", "third" and the like can be explicitly or implicitly included one or more of the features. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the following description, for the purpose of explanation and not to limit, specific details are set forth, such as particular system structures, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it should be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0027] Referring to Figures 1 to 5 As shown in the drawings, the present application shows a nuclear power plant valve bearing chamber dismounting and transferring device, which can be used for transferring nuclear power plant valve parts, the nuclear power plant valve includes but is not limited to large gate valve, the nuclear power plant valve parts can include valve body 100 and nuclear power plant valve bearing chamber 200. The nuclear power plant valve bearing chamber dismounting and transferring device can also be used for dismounting operation of the nuclear power plant valve bearing chamber 200, so as to facilitate the inspection of the nuclear power plant valve bearing chamber 200, and the nuclear power plant valve bearing chamber 200 can be the valve bearing chamber of the large gate valve.

[0028] The nuclear power plant valve bearing chamber dismounting and transferring device includes a first moving frame 10 and a second moving frame 20.

[0029] The first moving frame 10 is a square structure, for example, it can be a cube structure or a cuboid structure, the first moving frame 10 is made of metal material, which includes but is not limited to stainless steel. The first moving frame 10 is provided with a first moving wheel 11, the first moving frame 10 is provided with a first bearing assembly 12 and a second bearing assembly 13, the first bearing assembly 12 and the second bearing assembly 13 are arranged along the length direction of the first moving frame 10, the first bearing assembly 12 includes two first bearing seats 121 arranged oppositely, the two first bearing seats 121 can be symmetrically arranged, each first bearing seat 121 is provided with a first bearing wheel 122, specifically, each first bearing seat 121 is provided with a first bearing wheel 122 on the side facing the other first bearing seat 121. The second bearing assembly 13 includes two second bearing seats 131 arranged oppositely, the two second bearing seats 131 are symmetrically arranged, each second bearing seat 131 is provided with a second bearing wheel 132, specifically, each second bearing seat 131 is provided with a second bearing wheel 132 on the side facing the other second bearing seat 131; the first bearing wheel 122 and the second bearing wheel 132 jointly bear the valve body 100 of the nuclear power plant valve; the first moving frame 10 is further provided with two first guide rails 14 extending along the length direction thereof, the two first guide rails 14 can be arranged in parallel and spaced apart.

[0030] The second moving frame 20 is arranged close to one side of the second bearing assembly 13, and is provided with second moving wheels 21. The second moving frame 20 is provided with a sliding seat 22 which is movably arranged on the first guide rail 14. The second moving frame 20 is further provided with a lifting platform 23 for supporting a nuclear power plant valve bearing chamber 200. The lifting platform 23 can support the nuclear power plant valve bearing chamber 200 to be coaxially arranged with the valve body 100. In some embodiments, the lifting platform 23 is provided with two support plates 25, and the support plates 25 are provided with arc-shaped grooves 251 which are matched with the outer side of the nuclear power plant valve bearing chamber. In some embodiments, the lifting platform 23 comprises a scissor lifting platform.

[0031] In some embodiments, the sliding seat 22 can be a generally flat columnar structure, and the sliding seat 22 is connected with the first guide rail 14 through a first sliding block 24. In some embodiments, the first moving frame 10 can be provided with a first driving assembly which is connected with the first sliding block 24 or the sliding seat 22. The first driving assembly can be, but is not limited to, a first driving motor, a first hydraulic cylinder and a first pneumatic cylinder. When the first driving motor is selected, the first driving motor can be connected with the first sliding block 24 or the sliding seat 22 through a screw rod combination. The first driving motor comprises a servo motor which has high adjustment precision and has a forward and reverse rotation function. When the first hydraulic cylinder is selected, the first hydraulic cylinder can be connected with the second sliding block 16 or the second bearing seat 131 through a telescopic rod. When the first pneumatic cylinder is selected, the first pneumatic cylinder can be connected with the first sliding block 24 or the sliding seat 22 through a telescopic rod. Of course, other driving assemblies can also be selected, which are not limited here.

[0032] In some embodiments, the first moving frame 10 is further provided with two second guide rails 15, the two second guide rails 15 are arranged along the length direction of the first moving frame 10, and the two second guide rails 15 are symmetrically arranged outside the two first guide rails 14; the second bearing seat 131 is movably arranged on the second guide rail 15. The second bearing seat 131 can be movably arranged on the second guide rail 15 through a second sliding block 16, so that the position of the second bearing seat 131 can be adjusted, and different sizes of valve bodies 100 can be conveniently carried. In some embodiments, the first moving frame 10 can be provided with a second driving assembly connected with the second sliding block 16 or the second bearing seat 131, the second driving assembly can include but is not limited to a second driving motor, a second hydraulic cylinder and a second pneumatic cylinder. When the second driving motor is selected, the second driving motor can be connected with the second sliding block 16 or the second bearing seat 131 through a screw rod combination. The second driving motor includes a servo motor, the servo motor has high adjustment accuracy and has a forward and reverse rotation function. When the second hydraulic cylinder is selected, the second hydraulic cylinder can be connected with the second sliding block 16 or the second bearing seat 131 through a second hydraulic cylinder. When the second pneumatic cylinder is selected, the second pneumatic cylinder can be connected with the second sliding block 16 or the second bearing seat 131 through a second pneumatic cylinder. Of course, other driving assemblies can also be selected, which are not limited here. In addition, the second bearing seat 131 can also be manually moved by the worker, and after being moved to the appropriate position, it is clamped on the second guide rail 15 to limit the second bearing seat 131. Of course, in some embodiments, the second bearing seat 131 can also be fixedly arranged, which is not limited here.

[0033] In some embodiments, the second moving frame 20 includes two support rods 20a and at least one connecting rod 20b, the two support rods 20a are arranged in parallel with each other, and the at least one connecting rod 20b connects the two support rods 20a; the sliding seat 22 is connected with the support rod 20a, and one sliding seat 22 can be connected with the first support rod 20a; and the second moving wheel 21 is arranged on the connecting rod 20b. Preferably, the second moving frame 20 can be made of a metal material, which includes but is not limited to stainless steel.

[0034] In some embodiments, the end of the mounting shaft of the at least one first bearing wheel 122 is provided with a driven gear, the first moving frame 10 is provided with a driving motor, the output end of the driving motor is provided with a driving gear meshing with the driven gear, when the driving motor drives the first bearing wheel 122 to rotate, the valve body 100 can be driven to rotate, so as to adjust the position of the valve body 100, and then the valve body 100 can be checked. In some embodiments, the driving motor includes a servo motor, the servo motor has high adjustment accuracy and has a forward and reverse rotation function.

[0035] In some embodiments, handles are further arranged on the first moving frame 10 and / or the second moving frame 20 to facilitate pushing and pulling the nuclear power plant valve bearing chamber dismounting and transporting device.

[0036] In some embodiments, the first moving wheel 11 and the second moving wheel 21 can be universal wheels with brake function.

[0037] The nuclear power plant valve bearing chamber dismounting and transporting device is applied as follows: after the valve body 100 and the nuclear power plant valve bearing chamber 200 are dismounted from the nuclear power plant valve (at this time, the valve body 100 and the nuclear power plant valve bearing chamber 200 are still combined together), the valve body 100 is placed on the first bearing assembly 12 and the second bearing assembly 13, and the nuclear power plant valve bearing chamber dismounting and transporting device is used to transport the valve body 100 and the nuclear power plant valve bearing chamber 200 to a low radiation area for operation.

[0038] When the nuclear power plant valve bearing chamber 200 is dismounted, the lifting platform 23 is first moved to below the nuclear power plant valve bearing chamber 200, the support plate 25 can be used to clamp the circumferential surface of the nuclear power plant valve bearing chamber 200 by raising the lifting platform 23, and then the nuclear power plant valve bearing chamber 200 is dismounted. When the nuclear power plant valve bearing chamber 200 is reassembled, the nuclear power plant valve bearing chamber 200 is placed on the support plate 25, the second moving frame 20 is moved to make the nuclear power plant valve bearing chamber 200 close to the valve body 100, the height of the lifting platform 23 is adjusted to make the nuclear power plant valve bearing chamber 200 coaxial with the valve body 100, the valve body 100 is rotated to make the counterbore hole on the flange plate of the nuclear power plant valve bearing chamber 200 coaxial with the threaded hole on the top surface of the valve body 100, and finally the two are connected by bolts.

[0039] The nuclear power plant valve bearing chamber dismounting and transporting device can realize the transportation of the valve body of the nuclear power plant valve, especially a large gate valve, and the dismounting and inspection of the nuclear power plant valve bearing chamber 200, can effectively shorten the time of the staff staying in the high dose area, thereby reducing the radiation dose of the staff and reducing the safety risk of the staff. In addition, compared with the manual dismounting and transporting of the nuclear power plant valve bearing chamber 200 by the staff, the dismounting and inspection efficiency of the nuclear power plant valve bearing chamber can be improved by the assistance of the nuclear power plant valve bearing chamber dismounting and transporting device.

[0040] It can be understood that the above embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application; it should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and some deformations and improvements can be made, which belong to the protection scope of the present application; therefore, any equivalent transformation and modification within the scope of the claims of the present application shall belong to the scope of the claims of the present application.

Claims

1. A device for disassembling and transferring bearing chambers of valves in nuclear power plants, characterized in that, Includes a first movable frame (10) and a second movable frame (20); The first movable frame (10) is provided with a first movable wheel (11). The first movable frame (10) is provided with a first bearing assembly (12) and a second bearing assembly (13). The first bearing assembly (12) and the second bearing assembly (13) are spaced apart along the length direction of the first movable frame (10). The first bearing assembly (12) includes two first bearing seats (121) arranged opposite to each other. Each first bearing seat (121) is provided with a first bearing wheel (122). The second bearing assembly (13) includes two second bearing seats (131) arranged opposite to each other. Each second bearing seat (131) is provided with a second bearing wheel (132). The first bearing wheel (122) and the second bearing wheel (132) jointly support the valve body of the nuclear power plant valve. The first movable frame (10) is also provided with two first guide rails (14) extending along its length direction. The second movable frame (20) is located near the second bearing assembly (13). The second movable frame (20) is provided with a second movable wheel (21). The second movable frame (20) is provided with a sliding seat (22) that is movably mounted on the first guide rail (14). The second movable frame (20) is also provided with a lifting platform (23) for supporting the valve bearing chamber of the nuclear power plant.

2. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The sliding seat (22) is connected to the first guide rail (14) via the first slider (24).

3. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The first movable frame (10) is also provided with two second guide rails (15), which extend along the length of the first movable frame (10) and are symmetrically arranged at intervals on the outside of the two first guide rails (14); the first support seat (121) is movably mounted on the second guide rails (15).

4. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The second movable frame (20) includes two support rods (20a) and at least one connecting rod (20b). The two support rods (20a) are arranged parallel to each other, and at least one connecting rod (20b) connects the two support rods (20a). The sliding seat (22) is connected to the support rods (20a). The second movable wheel (21) is mounted on the connecting rod (20b).

5. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, At least one of the first bearing wheels (122) has a driven gear at the end of its mounting shaft, and the first moving frame (10) has a drive motor, the output end of which has a drive gear that meshes with the driven gear.

6. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 5, characterized in that, The drive motor includes a servo motor.

7. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The lifting platform (23) is provided with two support plates (25), and the support plates (25) are provided with arc-shaped grooves (251) that cooperate with the outer side of the valve bearing chamber of the nuclear power plant.

8. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The lifting platform (23) includes a scissor lift platform.

9. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The first movable frame (10) is a cuboid structure.

10. The nuclear power plant valve bearing chamber disassembly and transfer device according to claim 1, characterized in that, The first movable frame (10) and / or the second movable frame (20) are also provided with handles.

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