Nuclear power station steel containment vessel top head assembling bracket and assembling method

A technology of steel containment and top sealing head, which is applied in the direction of construction, building structure, and building material processing, etc. It can solve the problems of complex structure of assembled brackets, achieve the effects of repeated use, weight reduction, and use cost reduction

Active Publication Date: 2019-09-20
SHANDONG NUCLEAR POWER EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above problems, the present invention proposes a nuclear power plant steel containment roof assembly bracket and assembly method, which only retains the required functions of the assembly bracket during the roof assembly, and abandons the use of traditional assembly brackets for roof transportation. The scheme simplifies the structure of the assembled bracket and solves the problem of complex structure of the traditional assembled bracket

Method used

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  • Nuclear power station steel containment vessel top head assembling bracket and assembling method
  • Nuclear power station steel containment vessel top head assembling bracket and assembling method
  • Nuclear power station steel containment vessel top head assembling bracket and assembling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Disclosed in one or more embodiments is a nuclear power plant steel containment top seal assembly bracket, such as image 3 As shown, it includes: buttresses and single column supports for assembling the first ring of head plates, and circular truss structures for assembling the second, third, and fourth rings of head plates.

[0046] Among them, the supporting pier and the single column support are used to assemble the head plate of the first circle, and one end of the head plate is supported on the pier,

[0047] After the single column support is connected to the head plate of the first circle, the head plate is hoisted. The single column support is hoisted together with the head plate of the first circle. The anchor plates on the ground are connected and fixed, and each single column support corresponds to at least two buttresses.

[0048] The single column support can be dismantled after the first round of head plate assembly is completed, without affecting the su...

Embodiment 2

[0056] In one or more embodiments, a method for assembling a nuclear power plant steel containment top seal head is disclosed, including the following steps:

[0057] Before the top head is assembled, the pier of the first ring of head plate and the circular truss structure of the inner ring are fixed and installed according to the predetermined position;

[0058] The single column support is hoisted simultaneously with the head plate of the first circle, and the single column support is connected and fixed with the ground anchor plate after the head plate is hoisted to the outer ring pier;

[0059] like Figure 6 As shown, the first ring head plate is assembled using a single column and the "insertion method". The two head plates with columns are hoisted first and then inserted into the middle plate. The first ring head plate is assembled in this order. assembly.

[0060] After the first round of head plate welding is completed, the single column support can be removed. The...

Embodiment 3

[0064] In some other embodiments, before the top seal head is transported, the connection structure between the bottom of the circular truss structure and the foundation is removed, and a single group of transport vehicles is used to lift the circular truss structure, and four sets of transport vehicles are used to transport the top of the containment head; such as Figure 7 and Figure 8 As shown, the circular truss structure and the containment top head are transported synchronously. When the containment top head reaches the hoisting position, the containment top head is hoisted. After the top head is hoisted, the circular truss structure can pass through the bottom transport vehicle Shipped separately to designated location for reuse. The circular truss structure and the transportation method of this embodiment do not need to disassemble and assemble the circular truss structure, so that it can be reused as a whole, saving a lot of time for disassembly and assembly, and at...

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PUM

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Abstract

The invention discloses a nuclear power station steel containment vessel top head assembling bracket and an assembling method. The nuclear power station steel containment vessel top head assembling bracket comprises buttresses, single vertical column supports and a circular truss structure; the buttresses and the single vertical column supports are used for supporting the assembly of a first round of head plates, and each single vertical column support at least corresponds to two buttresses; the circular truss structure comprises a bracket body at least provided with two rounds of concentric circle structures, and each round of concentric circles is provided with installation vertical columns; and the circular truss structure is used for supporting the assembly of other head plates other than the first round of head plates. The structure of the nuclear power station steel containment vessel top head assembling bracket is greatly simplified compared with a traditional top head assembling bracket structure, so that the overall bracket weight is reduced, and the using cost is reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant steel containment shells, in particular to an assembling bracket and an assembling method for a nuclear power plant steel containment top seal head. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The containment vessel is the last safety barrier of the defense-in-depth principle of modern nuclear power plants, and radioactive substances are ultimately controlled within the pressure boundary of the containment vessel. The steel containment vessel is one of the important equipment of the large pressurized water reactor designed with passive safety concept, and it is also an important part of the passive containment cooling system. The top head of the steel containment is a semi-ellipsoidal head. The steel containment head is manufactured in pieces an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/16E04G21/14
CPCE04G21/14E04G21/161
Inventor 杨中伟王燕辉赵旭王奕清杨照东晏桂珍丁海明王成才王厚高王洪金张学勇徐方超李大鹏
Owner SHANDONG NUCLEAR POWER EQUIP MFG
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