CN103693546A - Hanging tool for forged AP1000 nuclear power main pipeline and quick hoisting method - Google Patents

Abstract

The invention relates to the field of hoisting equipment, and particularly relates to a hanging tool for a forged AP1000 nuclear power main pipeline in a solid solution heat treatment process in a cold section and a hot section and a quick hoisting method. When solid solution treatment is carried out on the nuclear power pipeline, the hoisting method specifically comprises the following steps: (1) before charging, predetermining the length of pendant chains of yoke plates and a specific hanging position of a copy lifting hook according to special dimension of the pipeline; (2) covering the parts, in contact with the pipeline, of the copy lifting hook and the yoke plates on both sides with a sheet steel plate made from a material the same as that of the pipeline; (3) respectively installing traction steel wires on both sides of the yoke plates and a hook body of the copy lifting hook; (4) determining the positions of a crown block and the hanging tool, and stations for workers operating the traction steel wires, wherein the workers in all posts make preparations in appointed positions; and (5) during discharging, completing the solid solution treatment by the workers in the posts according to a predetermined scheme. Compared with the prior art, the hanging tool and the hoisting method meet an operating standard of solid solution heat treatment on the forged nuclear power steel pipes so as to be popularized, and have the advantage of convenience and reliability in operation.

Description

Forge suspender and the fast hoisting method of AP1000 main nuclear power pipeline

Technical field

The present invention relates to hanging device field, relate in particular to suspender and the fast hoisting method of a kind of AP1000 of forging main nuclear power pipeline in cold section and hot arc solution heat treatment process.

Background technology

Forge AP1000 main nuclear power pipeline and be first production in the world, cold section that wherein forges AP1000 main nuclear power pipeline is irregular pipe fitting with hot arc, surface strength under the condition of high temperature is very low, the lifting position of profiling tongs is difficult to be controlled at predetermined center of gravity, pipeline is laid particular stress on, cause the local serious indentation that occurs, cause pipeline to be scrapped.Technology for Heating Processing requires heat treatment fire door to open to whole handling of pipe fitting to submerge in water and must be controlled in 3 minutes in addition, and the time is very short, requires supporting suspender to mount rapidly and handling, and can not reduce the surface quality of pipeline.Existing suspender cannot meet that the heat treatment of AP1000 main nuclear power pipeline is relevant to be required: 1) high temperature is come out of the stove to forging integral body and submerged in water in 3 minutes; 2) hot stage main pipeline does not allow the metallic contact with other material; 3) consider unpredictable problem on deformation, any position of main pipeline, has not allowed any cut, to prevent, because be out of shape, causes surplus not enough.

Summary of the invention

The suspender and the fast hoisting method that the object of this invention is to provide a kind of AP1000 of forging main nuclear power pipeline, for forging the requirement to handling in AP1000 main nuclear power pipeline solution heat treatment process, reach and in heat treatment process, improve the pipeline speed of coming out of the stove, and strictly control pipeline surface quality and deflection object.

For achieving the above object, the present invention is achieved through the following technical solutions:

Forge the suspender of AP1000 main nuclear power pipeline, comprise hanging beam, yoke plate and profiling suspension hook, top at the two ends of hanging beam is arranged with spacing tooth plate, profiling suspension hook by chain hanging below the middle part of hanging beam, two yoke plates respectively by the symmetrical hanging of chain below the spacing tooth plate at hanging beam two ends; Described yoke plate is that arc and two ends are porose, the length of yoke plate be lifting place pipeline girth 0.75～0.8, on the coupler body of yoke plate both sides and profiling suspension hook, traction steel wire is installed respectively.The top of described spacing tooth plate is provided with 6～10 along its length perpendicular to the groove of its length direction.

Forge the quick handling method of AP1000 main nuclear power pipeline, when Nuclear piping carries out solution treatment, concrete handling is carried out in the steps below:

1) before shove charge, according to the concrete size of pipeline, the chain sling length of predetermined yoke plate and the concrete hanging position of profiling suspension hook;

2) contact site of profiling suspension hook and both sides yoke plate and pipeline is used with the sheet steel of pipeline with material and covered, while avoiding coming out of the stove, main nuclear power pipeline directly contacts with suspension hook, yoke plate;

3) in yoke plate both sides and profiling suspension hook rear portion traction steel wire is installed respectively, determine the personnel positions that operates traction steel wire while coming out of the stove simultaneously;

4) after shove charge, first pipeline is lifted by crane in advance, according to pre-lifting result, determine overhead traveling crane and spreader position, traction steel wire operator erect-position, each post personnel all prepare at assigned address;

5), while coming out of the stove, each post personnel, by predetermined scheme operation, make pipeline by predetermined scheme fast hoisting, come out of the stove and proceed in pond with interior at 3 minutes, complete solution treatment.

Compared with prior art, the invention has the beneficial effects as follows:

The inventive method is applicable to the solid solution stage of cold section of AP1000 nuclear power nuclear station main pipeline and hot arc, guaranteed that from oven door opening to workpiece, entering the water time is no more than 3 minutes, can meet the technological requirement of all pipe surface quality and deflection, the present invention can be used as the operating standard popularization that nuclear power forges steel pipe solution heat treatment, has advantages of convenient and reliable operation.

Accompanying drawing explanation

Fig. 1 is suspender example structure schematic diagram of the present invention.

In figure: the spacing tooth plate 5-of 1-hanging beam 2-yoke plate 3-profiling suspension hook 4-chain 6-groove 7-traction steel wire

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

See Fig. 1, it is the suspender example structure schematic diagram that the present invention forges AP1000 main nuclear power pipeline, comprise hanging beam 1, yoke plate 2 and profiling suspension hook 3, top at the two ends of hanging beam 1 is arranged with spacing tooth plate 4, profiling suspension hook 3 is by chain 5 hangings below the middle part of hanging beam 1, and two yoke plates 2 are hung below the spacing tooth plate 4 at hanging beam 1 two ends by chain 5 is symmetrical respectively; Yoke plate 2 is that arc and two ends are porose, and the length of yoke plate 2 is advisable with 0.75～0.8 of the girth of lifting place pipeline.On the coupler body of yoke plate 2 both sides and profiling suspension hook 3, traction steel wire 7 is installed respectively.The top of spacing tooth plate 4 is provided with 6～10 along its length perpendicular to the groove 6 of its length direction, and spacing for to yoke plate 2 avoided transitional slide.

When suspender of the present invention is used for forging the quick handling of AP1000 main nuclear power pipeline, when Nuclear piping carries out solution treatment, concrete handling is carried out in the steps below:

1) before shove charge, according to the concrete size of pipeline, shape and the length of design hanging beam 1, chain sling 5 length of predetermined yoke plate and the concrete hanging position of profiling suspension hook;

2) profiling suspension hook 3 and both sides yoke plate 2 and the contact site of pipeline are used with the sheet steel of pipeline with material and covered, while avoiding coming out of the stove, main nuclear power pipeline directly contacts with suspension hook, yoke plate;

3) on the coupler body of yoke plate 2 both sides and profiling suspension hook 3, traction steel wire 7 is installed respectively, determine the personnel positions that operates traction steel wire while coming out of the stove simultaneously, the object that installs traction steel wire additional is yoke plate and profiling suspension hook can be hung over rapidly on pipeline when coming out of the stove, and can adjust comparatively accurately the particular location of hanging simultaneously;

4) after shove charge, first pipeline is lifted by crane in advance, according to pre-lifting result, determine overhead traveling crane and spreader position, traction steel wire operator erect-position, each post personnel all prepare at assigned address;

5) while coming out of the stove, each post personnel, by predetermined scheme operation, make pipeline by predetermined scheme fast hoisting, come out of the stove and proceed in pond with interior at 3 minutes, complete solution treatment, have finally guaranteed that pipeline comes out of the stove rapidly and guarantee surface quality and deflection.

Claims (3)

1. forge the suspender of AP1000 main nuclear power pipeline, it is characterized in that, comprise hanging beam, yoke plate and profiling suspension hook, top at the two ends of hanging beam is arranged with spacing tooth plate, profiling suspension hook is by chain hanging below the middle part of hanging beam, and two yoke plates are hung below the spacing tooth plate at hanging beam two ends by chain is symmetrical respectively; Described yoke plate is that arc and two ends are porose, the length of yoke plate be lifting place pipeline girth 0.75～0.8, on the coupler body of yoke plate both sides and profiling suspension hook, traction steel wire is installed respectively.

2. the suspender of forging AP1000 main nuclear power pipeline according to claim 1, is characterized in that, the top of described spacing tooth plate is provided with 6～10 along its length perpendicular to the groove of its length direction.

3. forge the quick handling method of AP1000 main nuclear power pipeline, it is characterized in that, when Nuclear piping carries out solution treatment, concrete handling is carried out in the steps below:

1) before shove charge, according to the concrete size of pipeline, the chain sling length of predetermined yoke plate and the concrete hanging position of profiling suspension hook;

2) contact site of profiling suspension hook and both sides yoke plate and pipeline is used with the sheet steel of pipeline with material and covered, while avoiding coming out of the stove, main nuclear power pipeline directly contacts with suspension hook, yoke plate;

3) in yoke plate both sides and profiling suspension hook rear portion traction steel wire is installed respectively, determine the personnel positions that operates traction steel wire while coming out of the stove simultaneously;

4) after shove charge, first pipeline is lifted by crane in advance, according to pre-lifting result, determine overhead traveling crane and spreader position, traction steel wire operator erect-position, each post personnel all prepare at assigned address;

5), while coming out of the stove, each post personnel, by predetermined scheme operation, make pipeline by predetermined scheme fast hoisting, come out of the stove and proceed in pond with interior at 3 minutes, complete solution treatment.

Images