CN203461680U

CN203461680U - Self-balancing hanger for nuclear power plant steel containment module

Info

Publication number: CN203461680U
Application number: CN201320504049.1U
Authority: CN
Inventors: 奚梅英; 郑崇裕; 翁晨阳; 毛星明; 钱浩; 张可丰; 高雷; 黄然
Original assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Current assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date: 2013-08-16
Filing date: 2013-08-16
Publication date: 2014-03-05
Anticipated expiration: 2023-08-16

Abstract

The utility model provides a self-balancing hanger for a nuclear power plant steel containment module, wherein three fixed hanging points are arranged on the steel containment module and n pulley hanging points are arranged on an arc line between two adjacent fixed hanging points at intervals; a hanging plate of a distributor is welded at the inner side of a cylinder; each of (3n+3) equalizer pulleys is fixed at the circumference of the cylinder through a branch beam; in other words, each equalizer pulley corresponds to one pulley hanging point or fixed hanging point; a steel wire rope sequentially passes through equalizer pulleys on the distributor, and the pulleys of the pulley hanging points arranged on the steel containment module and corresponding to the equalizer pulleys, or the fixed hanging points; and therefore, the distributor is connected with the steel containment module. The self-balancing hanger for the nuclear power plant steel containment module is characterized in that no hanging beam is provided, so that the related problems such as storage and transportation are avoided; the dead weight of the hanger is greatly reduced and the hoisting capacity of a crane is released; the stress balance of each hanging point can be realized automatically; and the difficulty of hoisting and the time taken by hoisting can be greatly reduced.

Description

Self-balancing lifting appliance for steel safety shell module of nuclear power plant

Technical Field

The utility model relates to a hoist and mount transportation technique, concretely relates to steel containment module self-balancing formula hoist of nuclear power plant.

Background

The steel containment vessel is an important structure of an AP1000 nuclear power plant and has a diameter of about40m, total height of about 70m and wall thickness of about 45mm, and can be divided into modules such as a bottom seal head, a cylinder ring segment, a top seal head and the like, and the weight of each steel safety shell module is different from 600t to 800 t. The steel safety shell module has the characteristics of large volume, heavy weight and easy deformation, and a special lifting appliance needs to be designed for lifting special articles.

The conventional lifting appliance for the steel containment module adopts a lifting beam type structure as shown in fig. 2 and comprises a distributor 1, a steel wire rope 2, an octagonal lifting beam 4, an adjustable pull rod 4 and the like. The crane hook links to each other with distributor top lewis hole, and 8 wire ropes of following the distributor branch link to each other with the eight corner hanging beam of below, and eight corner hanging beam passes through 8 adjustable pull rods and links to each other with the steel containment module of being hung.

In the hoisting process, firstly, hoisting the lifting hook to enable the lifting hook to bear part of the weight of the hoisted steel safety module, and confirming whether the stress of each hoisting point is balanced; and if the unbalance exists, the adjustable pull rod is adjusted to correct, and then heavier load is hung in a trial mode. Through the above process, after confirming that the stress deviation of each hoisting point is within the allowable range, the crane carries the whole weight of the steel containment vessel, and the formal hoisting operation is carried out.

However, the beam-type lifting appliance has the following disadvantages: (1) the hoisting beam is large in size, so that the nuclear power plant is inconvenient to store and transport on a construction site; (2) the hanging beam has large weight (about 100 t) and occupies considerable hoisting capacity of a crane; (3) in order to ensure that the stress of each lifting point is balanced, the trial lifting-adjustment needs to be repeated, and the lifting process is complicated and time-consuming; (4) and a lifting point is difficult to set when the top head is lifted.

Disclosure of Invention

An object of the utility model is to provide a steel safety housing module self-balancing hoist of nuclear power plant, its hoist and mount that is used for AP1000 steel safety housing module of nuclear power plant can realize the atress of each hoisting point automatically balanced.

Realize the utility model discloses the technical scheme of purpose: a self-balancing lifting appliance for a steel safety shell module of a nuclear power plant comprises a distributor, a steel wire rope, a plurality of pulley lifting points and 3 fixed lifting points; wherein, 3 fixed hoisting points are arranged on the steel safety shell module, and the 3 fixed hoisting points are annularly arranged at intervals of 120 degrees; n pulley hoisting points are uniformly arranged on an arc line between two adjacent fixed hoisting points at intervals, wherein n is an integer, and pulleys are arranged on the pulley hoisting points;

the distributor comprises a hanging plate, a cylinder, a branch beam and a plurality of balance pulleys; the hanging plate is welded on the inner side of the cylinder body, and the upper end of the hanging plate is provided with a shaft hole connected with the hoisting equipment; each balance pulley is fixed on the circumference of the cylinder through a branch beam; the number of the balance pulleys is 3n +3, namely each balance pulley corresponds to a pulley hoisting point or a fixed hoisting point;

the steel wire rope sequentially passes through a balance pulley on the distributor and a pulley or a fixed lifting point of a pulley lifting point which is arranged on the steel containment module and corresponds to the balance pulley, so that the distributor is connected with the steel containment module.

According to the self-balancing lifting appliance for the steel containment module of the nuclear power plant, the steel wire rope firstly penetrates through the fixed lifting point arranged on the steel containment module, then penetrates through a balance pulley on the distributor, turns back, then penetrates through a pulley arranged on the pulley lifting point on the steel containment module, then turns back to penetrate through a balance pulley on the distributor, and the like, so that the steel wire rope penetrates through each balance pulley on the distributor, a pulley arranged on each pulley lifting point on the steel containment module and the fixed lifting point.

According to the self-balancing lifting appliance for the steel containment module of the nuclear power plant, the front ends of the branch beams are fixed on the circumference of the cylinder body through bolts, and each balance pulley is connected with the tail end of each branch beam through a pin shaft and can swing around the pin shaft.

According to the self-balancing lifting appliance for the steel containment module of the nuclear power plant, n pulley lifting points are uniformly arranged on an arc line between two adjacent fixed lifting points at intervals, and n is 2, 3 or 4.

The utility model has the effects that: the utility model discloses a self-balancing hoist of nuclear power plant steel containment module has cancelled the hanging beam structure, has realized the automatic equilibrium of each hoisting point load through balanced pulley, has overcome the above-mentioned weak point of hanging beam formula hoist. The method specifically comprises the following steps: (a) the hanging beam is eliminated, so that the problems of storage, transportation and the like related to the hanging beam are avoided; (b) the self weight of the lifting appliance is greatly reduced, and the lifting capacity of a crane is released; (c) the stress balance of each lifting point can be automatically realized, the complicated adjusting process is avoided, and the lifting difficulty and the lifting time can be greatly reduced; (d) the whole weight and size of the lifting appliance are greatly reduced, and a plurality of sites under construction can share one lifting appliance, so that the utilization rate of equipment is improved.

Drawings

FIG. 1 is a schematic view of an AP1000 steel containment module;

fig. 2 is a schematic view of a conventional beam spreader;

FIG. 3 is a schematic diagram of a self-balancing lifting appliance of a steel containment module of a nuclear power plant according to the present invention;

fig. 4 is a top view of a self-balancing sling of a steel containment module of a nuclear power plant according to the present invention;

fig. 5 is a schematic diagram of the self-balancing sling wire rope winding of the steel containment vessel module of the nuclear power plant (the rightmost fixed hoisting point and the leftmost fixed hoisting point of the structural development schematic diagram of the steel containment vessel module are the same);

fig. 6 is a schematic diagram of a self-balancing spreader distributor of a steel containment module of a nuclear power plant according to the present invention;

fig. 7 is a schematic diagram of a self-balancing spreader distributor of a steel containment module of a nuclear power plant according to the present invention;

in the figure: 1-a dispenser; 2-a steel wire rope; 3-octagonal hanging beams; 4-adjustable pull rod; 5-pulley hoisting points; 6-fixing a hoisting point; 7-a steel containment module; 8-hanging the plate; 9-a cylinder; 10-a branch beam; 11-a balance pulley; 12-a top head; 13-ring segment one; 14-ring segment two; 15-ring segment three; 16-bottom head.

Detailed Description

The following describes a self-balancing lifting appliance for a steel containment module of a nuclear power plant in further detail with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 2 and FIG. 3, the self-balancing lifting appliance for the steel containment module of the nuclear power plant mainly comprises a distributor 1, a steel wire rope 2, a pulley lifting point 5 and a fixed lifting point 6.

There are a plurality of sheave suspension points 5, for example: and 9 in total. There are 3 fixed lifting points 6. The pulley hoisting point 5 and the fixed hoisting point 6 are both arranged on the steel containment module 7.

As shown in fig. 1, the steel containment module 7 may be a head 12, a ring segment one 13, a ring segment two 14, a ring segment three 15, or a bottom head 16. 3 fixed hoisting points 6 are arranged on the steel containment module 7, and the 3 fixed hoisting points 6 are annularly arranged at intervals of 120 degrees; n pulley hoisting points 5 are arranged on the arc line between two adjacent fixed hoisting points 6 at even intervals, for example: n = 3; a total of 9 pulley hoisting points 5 with a pulley on each pulley hoisting point 5.

As shown in fig. 6 and 7, the distributor includes a hanger plate 8, a cylinder 9, a branch beam 10, and 3n +3 balance pulleys 11 (i.e., 12 balance pulleys 11 in total). The hanging plate 8 is welded on the inner side of the cylinder body 9, and the upper end of the hanging plate 8 is provided with a shaft hole connected with a hoisting device; each balance pulley 11 is fixed on the circumference of the cylinder 9 by a branch beam 10, i.e. the front end of the branch beam 10 is fixed on the circumference of the cylinder 9 by a bolt, and each balance pulley 11 is connected with the tail end of the branch beam 10 by a pin shaft and can swing around the pin shaft. The number of the balance pulleys 11 should be such that each balance pulley 11 corresponds to one pulley hoisting point 5 or fixed hoisting point 6.

As shown in fig. 5, the steel wire rope 2 firstly passes through the fixed lifting point 6 arranged on the steel containment module 7, then passes through one balance pulley 11 on the distributor 1, turns back, then passes through the pulley of the pulley lifting point 5 arranged on the steel containment module 7, then turns back, passes through one balance pulley 11 on the distributor 1, and so on to realize that the steel wire rope 2 passes through the balance pulley 11 on each distributor 1, the pulley of each pulley lifting point 5 arranged on the steel containment module 7 and the fixed lifting point 6, thereby realizing the connection of the distributor 1 and the steel containment module 7.

The utility model discloses with the hanging beam cancellation among the current hanging beam formula hoist, set up balance pulley 11 on distributor 1, set up pulley hoisting point 5 and fixed hoisting point 6 on steel containment module 7, through 2 with the distributor on balance pulley 11 and the steel containment module 7 pulley hoisting point 5 with fixed hoisting point 6 link to each other. The steel wire rope-pulley structure can automatically realize the balanced stress of each lifting point.

The utility model discloses in if do not consider the efficiency of pulley, the wire rope pulling force of business turn over pulley always equals, utilizes this characteristic and the position of balanced pulley on the rational arrangement distributor and the hoisting point pulley of being hung on the steel safety housing module, can realize the load balance of each hoisting point automatically. And a fixed hoisting point is arranged on the steel safety shell module at intervals of 120 degrees, so that the possibility of overturning of the steel safety shell module can be avoided. The utility model discloses in according to actual conditions on the pitch arc between two adjacent fixed hoisting points 6 even interval set up a plurality of pulley hoisting points of n 5, n is preferred 2 or 3 or 4.

Claims

1. The utility model provides a steel safety shell module self-balancing formula hoist of nuclear power plant which characterized in that: the lifting appliance comprises a distributor (1), a steel wire rope (2), a plurality of pulley lifting points (5) and 3 fixed lifting points (6); wherein,

3 fixed hoisting points (6) are arranged on the steel safety shell module (7), and the 3 fixed hoisting points (6) are annularly arranged at intervals of 120 degrees; n pulley hoisting points (5) are uniformly arranged on an arc line between every two adjacent fixed hoisting points (6) at intervals, n is an integer, and pulleys are arranged on the pulley hoisting points (5);

the distributor comprises a hanging plate (8), a cylinder body (9), a branch beam (10) and a plurality of balance pulleys (11); the hanging plate (8) is welded on the inner side of the cylinder body (9), and the upper end of the hanging plate (8) is provided with a shaft hole connected with a hoisting device; each balance pulley (11) is fixed on the circumference of the cylinder (9) through a branch beam (10); the number of the balance pulleys (11) is 3n +3, namely each balance pulley (11) corresponds to one pulley hoisting point (5) or one fixed hoisting point (6);

the steel wire rope (2) sequentially penetrates through a balance pulley (11) on the distributor (1) and a pulley or a fixed lifting point (6) of a pulley lifting point (5) which is arranged on the steel safety shell module (7) and corresponds to the balance pulley (11), and the distributor (1) is connected with the steel safety shell module (7).

2. The self-balancing lifting appliance of the nuclear power plant steel containment module according to claim 1, characterized in that: the steel wire rope (2) firstly penetrates through a fixed lifting point (6) arranged on the steel safety shell module (7), then penetrates through a balance pulley (11) on the distributor (1), turns back and then penetrates through a pulley of a pulley lifting point (5) arranged on the steel safety shell module (7), then turns back and penetrates through a balance pulley (11) on the distributor (1), and the like, so that the steel wire rope (2) penetrates through each balance pulley (11) on the distributor (1), a pulley of each pulley lifting point (5) arranged on the steel safety shell module (7) and the fixed lifting point (6).

3. The self-balancing lifting appliance of the nuclear power plant steel containment module according to claim 1, characterized in that: the front end of the branch beam (10) is fixed on the circumference of the cylinder body (9) through a bolt, and each balance pulley (11) is connected with the tail end of the branch beam (10) through a pin shaft and can swing around the pin shaft.

4. The self-balancing lifting appliance of the nuclear power plant steel containment module according to claim 1, characterized in that: n pulley hoisting points (5) are uniformly arranged on the arc line between two adjacent fixed hoisting points (6) at intervals, and n is 2, 3 or 4.