CN-224232363-U - Leveling and stabilizing device for replacing top cover of reactor pressure vessel

CN224232363UCN 224232363 UCN224232363 UCN 224232363UCN-224232363-U

Abstract

The utility model discloses a leveling stabilizer for replacing a reactor pressure vessel top cover, which is used for replacing a reactor pressure vessel top cover assembly, wherein the reactor pressure vessel top cover assembly comprises a reactor top structure, a control rod driving mechanism and a reactor pressure vessel top cover, and the reactor top structure comprises a plurality of hanging rods connected with the reactor pressure vessel top cover. The leveling stabilizer for replacing the top cover of the reactor pressure vessel can effectively prevent the boom from tilting and twisting.

Inventors

PI JIANHONG
CHEN YONGCHAO
LIU YANWU
FANG JIAN
LI YUEZHONG
RAN XIAOBING

Assignees

深圳中广核工程设计有限公司
中广核工程有限公司

Dates

Publication Date: 20260512
Application Date: 20250418

Claims (10)

1. The utility model provides a leveling stabilising arrangement is used in the change of reactor pressure vessel top cap for the change of reactor pressure vessel top cap subassembly, reactor pressure vessel top cap subassembly includes a heap top structure, control rod actuating mechanism and reactor pressure vessel top cap, a plurality of jib that the heap top structure includes with reactor pressure vessel top cap is connected, its characterized in that, reactor pressure vessel top cap is changed and is used leveling stabilising arrangement includes: A stabilizer in a closed ring shape; The adjusting assemblies each comprise a limiting hole for the hanging rod to penetrate through, and the adjusting assemblies are connected to the stabilizing piece.
2. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 1, wherein the adjustment assembly comprises a socket, a mounting member and an adjustment member, the socket has the limiting hole, the mounting member is connected to the stabilizer, the mounting member has a mounting hole, the socket is disposed in the mounting hole, the adjustment member is connected to the mounting member, and the adjustment member is configured to drive the socket to move so that the socket drives the hanger rod to move radially along the hanger rod.
3. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 2, wherein said mounting member has at least two oppositely disposed side walls, said at least two oppositely disposed side walls being threadedly connected to said adjustment member, one end of said adjustment member extending into said mounting hole and abutting an outer wall of said socket member; Or the mounting piece is provided with at least two opposite side walls, the adjusting piece is arranged in the two opposite side walls and the sleeve joint piece in a penetrating mode, and the adjusting piece is in threaded connection with the side walls.
4. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 2, wherein said plurality of adjustment members are provided in plural, a plurality of said adjustment members being disposed around a circumference of said mounting member.
5. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 2, wherein said mounting member comprises a first member and a second member, said first member and said second member being abutted against each other with facing sides thereof cooperatively defining said mounting hole.
6. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 2, wherein the adjustment assembly further comprises a stopper connected to a wall of the mounting hole, the stopper abutting an upper end or a lower end of the socket.
7. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 2, wherein an upper end of the socket is provided in a circular structure, and a lower end of the socket is provided in a square structure.
8. The leveling stabilizer for reactor pressure vessel head replacement as recited in claim 1, further comprising a weight member connected to the stabilizer member such that a center of gravity of the roof structure is on a center axis thereof.
9. The leveling stabilizer for reactor pressure vessel head replacement as recited in claim 1, further comprising a guide member connected to the stabilizer member, a first end of the guide member being adapted to connect to the reactor pressure vessel head.
10. The leveling stabilizer for replacement of a reactor pressure vessel head as recited in claim 9, wherein said guide member further has a second end opposite said first end, said second end being configured in a tapered configuration.

Description

Leveling and stabilizing device for replacing top cover of reactor pressure vessel Technical Field The utility model relates to the technical field of reactor pressure vessels, in particular to a leveling and stabilizing device for replacing a top cover of a reactor pressure vessel. Background In the related art, a reactor body is composed of a Reactor Pressure Vessel (RPV), internals, control Rod Drive Mechanisms (CRDMs), core components, core instrumentation, and related components. The reactor pressure vessel is a nuclear power plant reactor-loop pressure-bearing boundary, and the reactor pressure vessel cylinder and the reactor pressure vessel top cover together form a second layer of safety barrier of the nuclear power plant. Wherein, the reactor pressure vessel top cover needs to be maintained or replaced regularly after long-term use. The reactor head is separated from the reactor pressure vessel head when the reactor pressure vessel head is replaced. Specifically, when the boom and the reactor pressure vessel top cover are separated, the boom of the reactor top structure is easy to incline or twist when the boom is disassembled, which may cause collision between the boom and surrounding objects. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a leveling stabilizer for replacing a top cover of a reactor pressure vessel, which can effectively prevent a suspender from tilting and twisting. According to an embodiment of the present utility model, a leveling stabilizer for reactor pressure vessel head replacement for replacement of a reactor pressure vessel head assembly including a head structure including a plurality of booms connected to the reactor pressure vessel head, a control rod driving mechanism, and a reactor pressure vessel head, characterized in that the leveling stabilizer for reactor pressure vessel head replacement includes: A stabilizer in a closed ring shape; The adjusting assemblies each comprise a limiting hole for the hanging rod to penetrate through, and the adjusting assemblies are connected to the stabilizing piece. The leveling stabilizer for the reactor pressure vessel top cover replacement at least has the advantages that the reactor top structure comprises a plurality of hanging rods, each adjusting component in the leveling stabilizer for the reactor pressure vessel top cover replacement can be sleeved on each hanging rod, and the adjusting components are connected to the closed annular stabilizer, so that the hanging rods can be restrained by the leveling stabilizer for the reactor pressure vessel top cover replacement when the hanging rods are detached, and the hanging rods are effectively prevented from being inclined or twisted. Specifically, the leveling stabilizer for replacing the reactor pressure vessel roof can effectively prevent the boom from tilting and twisting. According to some embodiments of the utility model, the adjusting assembly comprises a socket joint part, a mounting part and an adjusting part, the socket joint part is provided with the limiting hole, the mounting part is connected with the stabilizing part, the mounting part is provided with a mounting hole, the socket joint part is arranged in the mounting hole, the adjusting part is connected with the mounting part, and the adjusting part is used for driving the socket joint part to move so that the socket joint part drives the suspender to move radially. According to some embodiments of the present utility model, the leveling stabilizer for replacing the top cover of the reactor pressure vessel is provided with at least two opposite side walls, the at least two opposite side walls are connected with the adjusting piece in a threaded manner, and one end of the adjusting piece extends into the mounting hole and is abutted with the outer wall of the sleeve joint piece; Or the mounting piece is provided with at least two opposite side walls, the adjusting piece is arranged in the two opposite side walls and the sleeve joint piece in a penetrating mode, and the adjusting piece is in threaded connection with the side walls. According to the leveling stabilizer for replacing the top cover of the reactor pressure vessel, which is provided with a plurality of adjusting pieces, the plurality of adjusting pieces are arranged around the circumference of the mounting piece. According to some embodiments of the utility model, the leveling stabilizer for replacing the top cover of the reactor pressure vessel comprises a first piece and a second piece, wherein the first piece and the second piece are butted with each other, and the opposite sides of the first piece and the second piece jointly form the mounting hole. According to some embodiments of the utility model, the leveling stabilizer for replacing the top cover of the reactor pressure vessel further comprises a limiting piece, wherein