CN214693020U

CN214693020U - Nuclear power station nuclear island shield wall steel plate concrete structure submodule hoisting system

Info

Publication number: CN214693020U
Application number: CN202022902149.2U
Authority: CN
Inventors: 王钰琳
Original assignee: Shandong Nuclear Power Co Ltd
Current assignee: Shandong Nuclear Power Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-11-12
Anticipated expiration: 2030-12-04

Abstract

The utility model discloses a nuclear power station nuclear island shield wall steel plate concrete structure submodule hoisting system, which is characterized in that an annular hanger system is arranged on the nuclear island shield wall, and the annular hanger system comprises an annular hanger, inner and outer wall support columns, a lifting rod system, an annular track and a small-sized traveling crane; the lifting rod system is fixed on the shielding wall, and the annular hanging bracket is supported on the shielding wall through the inner and outer wall supporting columns after the lifting height is controlled and fixed through the lifting rod system; and the annular hanging bracket is provided with an annular track and a small-sized traveling crane, and the small-sized traveling crane is used for hoisting the sub-modules.

Description

Nuclear power station nuclear island shield wall steel plate concrete structure submodule hoisting system

Technical Field

The utility model relates to a nuclear power station nuclear island shield wall steel sheet concrete structure (SC structure) submodule piece hoist and mount system is applied to the construction of steel sheet concrete structure wall body.

Background

SC structure module adopts steel plate concrete structure for novel nuclear power CAP1000 shielding factory building's tubular structure: the steel plate consists of an inner layer of steel plate and an outer layer of steel plate, wherein the back of the steel plate is welded with a stiffening plate, an anchor nail and a pulling connecting steel bar, and C55 common concrete and self-compacting concrete are filled in the steel plate. The SC cylinder has 16 layers and consists of more than 200 sub-modules, and the total height is about 52 m. The SC structure has an outer radius of about 22m, an inner radius of about 21m and a thickness of about 0.9 m. A typical sub-module is 13m long, 1.5m high, 1.1m wide and weighs about 24 t.

The common hoisting system: for the installation of the SC cylinder structure, for different layers, a truck crane, a cantilever crane and a special large crane (3200t) are respectively adopted to hoist the submodule, the module component and the whole circle component (see the following table).

The common hoisting system has the following problems:

1. the whole-circle hoisting is large in deformation, and the misalignment of the shielding wall barrel is easily caused, so that the overall quality of the shielding wall is influenced. In addition, the whole circle of hoisting needs great prefabricated assembly field, and the prefabricated assembly field needs to carry out special reinforcement processing, and the expense is not very light, and is unfavorable for practicing thrift the land used.

2. Dedicated large crane (3200 t): under the working condition that the hoisting radius is 38m, the rated load weight is 972t, the total weight of the 12-14 modules is 756t, the hoisting tool 150, the hoisting rigging 170t and the hanging frame 30t is 1106t, and the modules cannot be hoisted at one time.

3. The special large crane is frequently used, and the risk of non-opening turnover exists.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is the problem of hoist and mount difficulty, inefficiency of hoist and mount system commonly used.

In order to solve the technical problem, the technical scheme of the utility model is to provide a nuclear power station nuclear island shield wall steel plate concrete structure submodule hoisting system, which is characterized in that an annular hanger system is arranged on the nuclear island shield wall, and the annular hanger system comprises an annular hanger, inner and outer wall support columns, a lifting rod system, an annular track and a small-sized crane; the lifting rod system is fixed on the shielding wall, and the annular hanging bracket is supported on the shielding wall through the inner and outer wall supporting columns after the lifting height is controlled and fixed through the lifting rod system; and the annular hanging bracket is provided with an annular track and a small-sized traveling crane, and the small-sized traveling crane is used for hoisting the sub-modules.

The inner wall support column and the outer wall support column are detachably connected with the shielding wall through bolts.

An operating platform is arranged below the annular hanging bracket and is mainly used for operating and disassembling the welding work between the inner and outer wall supporting columns and the SC sub-module.

The submodule enters from the submodule inlet, is lifted to a specified elevation through a small-sized travelling crane, enters the annular track along the radius direction, and then reaches a specified position along the annular track.

The utility model has the advantages that:

the hoisting system can effectively solve the problems in common hoisting systems, guarantee the project progress, reduce the use frequency of large cranes, reduce the occupation of construction sites and save the project investment. The main effects are as follows:

1. the problem of misalignment of the shielding wall barrel caused by excessive deformation due to whole-circle hoisting can be effectively solved, and therefore the overall quality of the shielding wall is improved.

2. A special large crane (3200t) is not used basically, so that the use frequency of the large crane is reduced, and the progress of nuclear power engineering is guaranteed.

3. The prefabricated assembling site with the SC structure is saved, and the processing cost of the assembling site is saved.

Drawings

FIG. 1 is a schematic representation of a ring hanger architecture;

FIG. 2 is a cross-sectional view of the structure A-A shown in FIG. 1;

FIG. 3 is a cross-sectional view of structure B-B shown in FIG. 1;

FIGS. 4-1 to 4-8 show the detailed hoisting process, and eight steps are illustrated in FIGS. 4-1, 4-2, 4-3, 4-4, 4-5, 4-6, 4-7, and 4-8;

wherein, 1-nuclear island shielding wall; 2-nuclear island CV shell; 3-inner and outer wall supporting columns; 4-a ring hanger; 5-an annular track; 6-operating the platform; 7-a lifter system; 8-small-sized traveling crane; 9-SC submodule; 10-submodule entrance.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

Examples

This example is nuclear power station nuclear island shield wall steel sheet concrete structure submodule piece hoist and mount system, the system is as follows:

and the SC sub-module is hoisted by utilizing an annular hanger system fixed on the lower completed shielding wall. The annular hanging bracket system comprises an annular hanging bracket 4, inner and outer wall supporting columns 3, an operating platform 6, a lifting rod system 7, an annular track 5 and a small-sized travelling crane 8. The inner wall support column 3 and the outer wall support column 3 are connected with the shielding wall 1 through bolts to support the whole hanger system. When the working condition is lifted, the bolts between the inner wall support column and the outer wall support column 3 and the shielding wall 1 are released, so that the connection between the hanger and the shielding wall 1 is timely recovered once the hanger is lifted in place.

The annular hanger 4 is lifted by a hydraulic lifting rod supported on the concrete surface at the top of the shielding wall 1, so that the annular hanger 4 is integrally lifted to the upper elevation, and the stroke is about 4 meters.

The annular hanging bracket 4 is provided with a small traveling crane 8, the rated lifting capacity is 35 tons, and the traveling crane is required to travel along the annular track 5 and also can travel along the radius direction.

A sub-module inlet 10 is arranged on one side of the annular hanging bracket 4, a sub-module 9 is transported to the position below the sub-module inlet 10 by a vehicle, and after the sub-module is lifted to a specified elevation by a traveling crane on the hanging bracket, the sub-module enters the annular track along the radius direction and further reaches a specified position.

The annular hanger system is shown in fig. 1-3;

the detailed hoisting process is shown in fig. 4, and eight steps are illustrated as fig. 4-1, fig. 4-2, fig. 4-3, fig. 4-4, fig. 4-5, fig. 4-6, fig. 4-7 and fig. 4-8.

Claims

1. The nuclear island shielding wall steel plate concrete structure submodule hoisting system is characterized in that an annular hanger system is arranged on a nuclear island shielding wall, and the annular hanger system comprises an annular hanger, inner and outer wall supporting columns, a lifting rod system, an annular track and a small-sized travelling crane; the lifting rod system is fixed on the shielding wall, and the annular hanging bracket is supported on the shielding wall through the inner and outer wall supporting columns after the lifting height is controlled and fixed through the lifting rod system; and the annular hanging bracket is provided with an annular track and a small-sized traveling crane, and the small-sized traveling crane is used for hoisting the sub-modules.

2. The system for hoisting the submodule of the steel plate concrete structure of the nuclear island shielding wall of the nuclear power plant as recited in claim 1, wherein the inner and outer wall supporting columns are detachably connected with the shielding wall through bolts.

3. The nuclear power plant nuclear island shield wall steel plate concrete structure submodule hoisting system of claim 2, wherein an operation platform is arranged below the annular hanger frame and used for operating and disassembling the inner and outer wall support columns.

4. The system for hoisting the submodule of the steel plate concrete structure of the nuclear island shielding wall of the nuclear power plant as claimed in claim 1, wherein one side of the annular hanger is provided with a submodule inlet, and the submodule enters from the submodule inlet, is lifted to a specified elevation by a small-sized travelling crane, enters the annular track along the radius direction and further reaches a specified position.