CN2181066Y

CN2181066Y - Verticle support column structure for steam generator of pressurized-water nuclear power plant

Info

Publication number: CN2181066Y
Application number: CN93246021U
Authority: CN
Inventors: 吴兴祥
Original assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Current assignee: Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date: 1993-12-07
Filing date: 1993-12-07
Publication date: 1994-10-26
Anticipated expiration: 2003-12-07

Abstract

The utility model discloses a vertical support column structure for steam generators in pressurized water nuclear power plants, which comprises a vertical support column, an upper support seat, a lower support seat, and connecting pieces used for connecting the vertical support column, the upper support seat and the lower support seat, wherein the upper support seat and the lower support seat are connected with the two ends of the vertical support column. The utility model is characterized in that the connecting pieces are spherical face pins composed of ball sleeves, ball heads and one-way pin shafts. The utility model has the advantages that the utility model can bear greater axial load and can agilely rotate; when the working condition of the nuclear power plant changes, the support column can swing with the steam generator on a plane parallel to the axial line of the hot segment of a main duct and can also swing with the heat expansion and the cold contraction of the steam generator along the radial direction of the steam generator. The spherical pins provided by the utility model can also be used as vertical supporting connecting pieces for large scale equipment.

Description

Verticle support column structure for steam generator of pressurized-water nuclear power plant

The utility model relates to the movable plumb post structure of a kind of main equipment, is a kind of pressurized water reactor nuclear power station steam generator plumb post structure specifically.

In the pressurized-water reactor nuclear power plant main building, reactor is arranged in the center of main building, steam generator and cooling medium main pump be arranged in symmetrically reactor around.The vertical support of every steam generator is made up of four plumb posts, and the upper end of every pillar is connected with the upper bracket that is located at steam generator cylindrical shell bottom, and the lower end is connected with undersetting, and the undersetting foot bolt interior with being embedded in floor is connected.Plumb post, upper and lower bearing and their web member constitute steam generator plumb post structure.When nuclear power station from cold conditions to hot or from hot during to the cold conditions variable working condition, the plane at reactor center remains unchanged, and the thermal expansion of reactor body, steam generator and the trunk line that is connected them or cold contraction can make relative response heap center, steam generator center be subjected to displacement, be that the steam generator center will be moved along the line at reactor center and steam generator center, then four plumb posts also will with steam generator with the plane of main pipe hot leg parallel axes on swing; Four plumb posts also will radially be swung along steam generator with expanding with heat and contract with cold of steam generator self simultaneously.Therefore require every plumb post except that bearing bigger axial load, need adopt movable syndeton at its two ends.The unidirectional pin connected construction of the general employing of the two ends of pressurized water reactor nuclear power station steam generator plumb post and the web member between upper and lower bearing at present, though it can bear bigger axial load, but pillar axes can only be rotated around unidirectional pin axis, when variable working condition, can only satisfy the swing requirement of a direction, can not satisfy the swing requirement of both direction simultaneously.

The purpose of this utility model provides a kind of pressurized water reactor nuclear power station steam generator plumb post structure that can satisfy two swaying direction requirements when variable working condition simultaneously.

The utility model is achieved in that a kind of pressurized water reactor nuclear power station steam generator plumb post structure, comprises plumb post, the upper and lower bearing that is connected with the plumb post two ends, and the web member that is used to connect plumb post and upper and lower bearing.Wherein said web member is a sphere latch structure thing, it comprises the cylindrical ball cover that is installed in the pin-and-hole of plumb post two ends, be located at the rotating bulb that the inside and outside footpath of ball cover and ball cover inside surface match, and pass the ball cover two ends and be used to be connected the unidirectional bearing pin of bearing and be located at the free-ended baffle plate of unidirectional bearing pin with bulb central authorities.

The sphere latch structure is adopted with being connected of upper and lower bearing in the plumb post two ends in the utility model, it not only can bear bigger axial load, and rotate flexibly and live, pillar can rotate around the axis of unidirectional bearing pin, again can be at the axis place of unidirectional bearing pin and plumb post plane rocking, under the variable working condition situation, pillar can with steam generator with the plane of main pipe hot leg parallel axes on swing, also can radially wobble along steam generator with expanding with heat and contract with cold of steam generator self.

Now in conjunction with the accompanying drawings and embodiments the utility model is done specific descriptions:

Fig. 1 is a pressurized water reactor nuclear power station steam generator plumb post structural representation;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is that the B-B of Fig. 1 is to view;

Fig. 4 is the axial section of ball cover;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is the side view of Fig. 4;

Fig. 7 is the I portion enlarged drawing of Fig. 4;

Fig. 8 is the axial section of bulb;

Fig. 9 is unidirectional pin shaft structure synoptic diagram.

As Fig. 1, Fig. 2 and shown in Figure 3, a kind of pressurized water reactor nuclear power station steam generator plumb post structure, comprise plumb post 6, the upper bracket 1 and the undersetting 7 that are connected with plumb post 6 two ends, and connection plumb post 6 and upper bracket 1, the web member that undersetting 7 is used, wherein said web member is a sphere latch structure, it comprises the cylindrical ball cover 2 that is installed in the plumb post 6 two ends pin-and-holes, be located in the ball cover 2, the rotating bulb 3 that external diameter and ball cover inside surface match, and pass ball cover 2 two ends and bulb central authorities and be used to be connected bearing 1 or the 7 unidirectional bearing pins 4 that connect, the free end of unidirectional bearing pin 4 is provided with baffle plate 5, also is provided with baffle ring 8 on bulb 3 ends, the two ends of ball cover 2.

As Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, ball cover 2 is cylindrical, and the pin-and-hole at its diameter and plumb post 6 two ends matches, and its inside surface is billiard table shape along axis direction, and before and after the first half of ball cover 2 inside surfaces has the cylinder mounting groove 9 of symmetry, be used to install bulb 3.As shown in Figure 8, bulb 3 also is billiard table shape, and its height h equals the width 1 of cylinder mounting groove 9, and its axis direction has cylindrical pin-and-hole in bulb 3 upper edges, and its pore size and unidirectional bearing pin 4 diameters match.As shown in Figure 9, unidirectional bearing pin 4 is a rod member, has backstop groove 10 in its free end both sides, is used to install baffle plate 5.

In the present embodiment, above-mentioned each parts are metal material, and wherein ball cover 2 diameters are 310mm, highly be 160mm, consistent with the pin-and-hole aperture and the length at plumb post 6 two ends, the billiard table shape inner surface diameter of ball cover 2 is 256mm, the width 1=171mm of cylinder mounting groove 9, cylinder diameter also are 256mm; Bulb 3 diameters are 250mm, highly are 170mm, and its axial pin bore dia is 150mm; Unidirectional pin diameter is 150mm.Bulb 3 is put into ball cover 2 along cylinder mounting groove 9, half-twist overturns 90 ° again, 2 liang of stomidiums of its axial pin-and-hole and ball cover are alignd, pack in the pin-and-hole of plumb post 6 ends, this plumb post is put in the middle of the bearing installing port pad upper baffle ring 8 on bulb 3 both ends of the surface, the free end of unidirectional bearing pin 4 inserts bearing pin-and-hole, baffle ring 8, ball cover stomidium from a side, pass ball head to pin-and-hole, come out, the baffle plate 5 of in its grade groove 10, packing into from opposite side.

Sphere latch structure provided by the utility model also can be used as the web member of its main equipment vertical support.

Claims

1, a kind of pressurized water reactor nuclear power station steam generator plumb post structure, comprise plumb post (6), the upper bracket (1) and the undersetting (7) that are connected with plumb post (6) two ends, and the web member that is used to connect plumb post (6) and upper bracket (1) and undersetting (7), it is characterized in that said web member is a sphere latch structure, it comprises the cylindrical ball cover (2) that is installed in the pin-and-hole of plumb post (6) two ends, be located at ball cover (2), the rotating bulb (3) that external diameter and ball cover (2) inside surface matches, and pass ball cover (2) two ends and be used to be connected the unidirectional bearing pin (4) of bearing (1) or (7) and be located at the free-ended baffle plate of unidirectional bearing pin (4) (5) with bulb (3) central authorities.

2, according to the said a kind of pressurized water reactor nuclear power station steam generator plumb post structure of claim 1, the inside surface that it is characterized in that said ball cover (2) is billiard table shape along axis direction, and before and after the first half of ball cover (2) inside surface has the cylinder mounting groove (9) of symmetry, said bulb (3) also is billiard table shape, its height h equals the width 1 of the cylinder mounting groove (9) of ball cover (2), its axis direction has cylindrical pin-and-hole in bulb (3) upper edge, its pore size and unidirectional bearing pin (4) diameter match, unidirectional bearing pin (4) is a rod member, and its free end both sides have backstop groove (10).