CN201994080U

CN201994080U - Hoisting grid of nuclear power plant steel lining module

Info

Publication number: CN201994080U
Application number: CN2011200083237U
Authority: CN
Inventors: 陈明国; 郁万里
Original assignee: China Nuclear Industry Huaxing Construction Co Ltd
Current assignee: China Nuclear Industry Huaxing Construction Co Ltd
Priority date: 2011-01-12
Filing date: 2011-01-12
Publication date: 2011-09-28
Anticipated expiration: 2021-01-12

Abstract

The utility model relates to a hoisting grid of a nuclear power plant steel lining module, and belongs to the technical field of nuclear power plant stack type steel lining construction. The grid is provided with node ball bodies which are distributed at intervals into an inner ring and an outer ring, into an upper layer and a lower layer. Two left-right adjacent, up-down adjacent and inner-outer adjacent node ball bodies are respectively fixedly connected through transversal, vertical and longitudinal truss rods to form a three-dimensional annular hoisting grid, and ends of the truss rods are provided with outer screw threads. By the utilization of the hoisting grid of the nuclear power plant steel lining module, modularized construction methods of nuclear power plant steel linings can be implemented. The molding level of steel linings in pre-manufacture stage is improved, therefore the construction period of mounting stage can be greatly shortened, the construction efficiency can be improved, the safety risk is reduced, and an aim of improving the economical efficiency of construction is achieved.

Description

Module lifting rack in the nuclear power station steel lining

Technical field

The utility model relates to a kind of lifting rack, and module lifting rack in especially a kind of nuclear power station steel lining belongs to nuclear power station heap shaped steel lining and builds technical field of construction.

Background technology

Prevent the iron and steel barrier of nuclear leakage safety guarantee in the steel lining as nuclear power station, bringing into play important effect aspect the reduction nuclear safety risk.

In the nuclear power station construction of having built or having built at present, all adopt the construction method of piecemeal lifting, installation in the nuclear power station steel lining.This kind construction method exists in the numerous and diverse repetition of installation process, the steel lining installs that overall precision is difficult to control, the work high above the ground time is long, security risk is big, takies shortcomings such as the engineering critical path time is long.

Facts have proved, in Nuclear Power Station when construction steel lining construction according to the working method of piecemeal lifting belong to full time period work high above the ground, to take the engineering construction critical path time long, the while intersects mutually with concrete, reinforcement construction, construction safety risk is difficult to estimate.This form of construction work operating space when construction is little in addition, can not effectively use construction worker facility to carry out the correction of precision.

The utility model content

The purpose of this utility model is: module lifting rack is provided in a kind of nuclear power station steel lining, thereby for realizing that modular construction method lays the foundation in the nuclear power station steel lining, and then significantly improve operating efficiency, shorten installation period, reduce security risk.

In order to reach above purpose, module lifting rack has by inside and outside two circles, two-layer node spheroid spaced apart up and down in the nuclear power station steel lining of the present utility model, externally threaded horizontal, vertical and the longitudiual truss bar is fixedly connected by the termination band respectively between adjacent, the neighbouring and inside and outside two adjacent node spheroids in each left and right sides, constitute three-dimensional circular lifting rack.

In order to guarantee enough intensity and rigidity, also connect between inside and outside two circles and the bilevel diagonal angle node spheroid by oblique truss rod, form herringbone and strengthen structure.

The utility model further improves: the destined node spheroid that the upper strata inner ring of described lifting rack is uniformly distributed along the circumference welds the hanger with lifting hole(eyelet) respectively.

The utility model further improves: the line of centres of described lifting hole(eyelet) and corresponding node spheroid and surface level form the lifting angle.

After adopting the utility model, modular construction method is implemented.This method has been owing to improved in the steel lining in the moulding degree in prefabricated stage, therefore can significantly shorten installation phase duration, improve operating efficiency, reduce security risk, reach the purpose that improves the nuclear power station construction economy.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the lifting grid structure synoptic diagram of an embodiment of the utility model.

Fig. 2 is the vertical view of Fig. 1 embodiment.

Fig. 3 is the shackle structure synoptic diagram of Fig. 1 embodiment.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the lifting bolt structural representation of Fig. 1 embodiment.

Fig. 6 is the side view of Fig. 5.

Fig. 7 is structural representation in the steel lining after the present embodiment welding.

The implication of each detail drawing mark sees the following form among the figure:

Reference numeral	Implication	Reference numeral	Implication
					1	The initial suspension centre of large crane	2	The final suspension centre of large crane
3	Module is deposited a little	4	The module fabricating yard
				5	The rack storage space	6	The rack suspension centre that winds up
7	The lower edge ball node	8	M36A type lifting bolt

Embodiment

Following with reference to the description of drawings specific embodiment of the utility model.Modular construction is carried out according to following steps in the nuclear power station steel lining of present embodiment:

1, preformed liner module---integral body highly is the multi-stage annular lining module of 5.75m for (referring to Fig. 7) in the steel lining of jar shape is divided into, after shop-fabricated, selects the assembly unit place to be made into lining modules at different levels.

2, make the lifting rack---as depicted in figs. 1 and 2, the node spheroid 1 that band is connected screw is by inside and outside two circles, two-layer spaced apart up and down, and externally threaded horizontal, vertical and longitudiual truss bar 2 is fixedly connected by the termination band respectively between adjacent, the neighbouring and inside and outside two adjacent node spheroids in each left and right sides, constitute three-dimensional circular lifting rack; Also connect between inside and outside two circles and the bilevel diagonal angle node spheroid, form herringbone and strengthen structure, to guarantee enough intensity and rigidity by oblique truss rod 3; The lifting rack should equal the external diameter of annular lining module by the pitch diameter of outer ring node ball centre, can guarantee that like this lifting steadily.

3, the Heave Here being set---eight node spheroids 1 selecting to be uniformly distributed along the circumference at the upper strata inner ring of lifting rack are as the Heave Here, full weld connects two hangers 4 that have lifting hole(eyelet) as shown in Figure 3 and Figure 4, the lifting angle that the line of centres of lifting hole(eyelet) and corresponding node spheroid and surface level shape are at 45 respectively.

4, sling point is set---48 node spheroids 1 selecting circumference uniform distribution in the lower floor outer ring of lifting rack are as the lifting point, wherein eight corresponding with the position, Heave Here, respectively at the connection screw screw-in lifting bolt 5 (M36A type standard component) of its bottom.

5, hang connection---the position at annular lining module 7 corresponding lifting rack bottom lifting bolts 5 is made hole for hoist respectively, by non junction fake lockset 6 (WJT19 type standard component), will lift rack by lifting bolt 5 and hole for hoist and hang with annular lining module and be connected.

6, lifting is in place---eight main lifting wire rope 8 (referring to Fig. 2) are penetrated the lifting hole(eyelet) of each hanger on the lifting rack respectively, and concentrated being hooked on the loop wheel machine suspension hook 9 that is positioned at top, lifting rack center, the angle with surface level behind each wire rope hook equals to lift by crane the angle; Handle loop wheel machine,, hang that to deliver to the installation site in place by the lifting rack annular lining module of slinging.

7, tired step by step stitch welding connects---as shown in Figure 8, from bottommost, after treating to be superimposed upon higher level's annular lining module on subordinate's annular lining module, neighbouring annular lining module is interconnected the seam crossing full weld, tired step by step folded, until forming in the complete steel lining.

The concrete parameter of present embodiment lifting rack is

Rack weight	32.12t
		The rack height	2.5m
Rack inside circumference diameter	41.931m
		Rack outer circumference diameter	46.881m
The rack suspension centre number that winds up	8
		Rack lower edge suspension centre number	48

After adopting present embodiment: by modular construction, changed the construction technology that the lifting of construction piecemeal is installed in the original steel lining, reduced the time of construction on the construction critical path in the steel lining, simplified fitting operation, reduced the measurement difficulty in the installation process, reduce the security risk in the construction, improved synthetic operation efficient.Except that present embodiment, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. module lifting rack in the nuclear power station steel lining, it is characterized in that: have by inside and outside two circles, two-layer node spheroid spaced apart up and down, externally threaded horizontal, vertical and the longitudiual truss bar is fixedly connected by the termination band respectively between adjacent, the neighbouring and inside and outside two adjacent node spheroids in each left and right sides, constitute three-dimensional circular lifting rack.

2. module lifting rack in the nuclear power station steel lining according to claim 1 is characterized in that: also connect by oblique truss rod between described inside and outside two circles and the bilevel diagonal angle node spheroid, form herringbone and strengthen structure.

3. module lifting rack in the nuclear power station steel lining according to claim 2, it is characterized in that: the destined node spheroid that the upper strata inner ring of described lifting rack is uniformly distributed along the circumference welds the hanger with lifting hole(eyelet) respectively.

4. module lifting rack in the nuclear power station steel lining according to claim 4, it is characterized in that: the line of centres of described lifting hole(eyelet) and corresponding node spheroid and surface level form the lifting angle.