CN2704742Y

CN2704742Y - Upper pillar long round connecting structure of spherical storing tank

Info

Publication number: CN2704742Y
Application number: CN 200320111645
Authority: CN
Inventors: 于广彦; 李喜顺; 邵金玲; 樊奉瑭; 白世林; 魏永芳; 何剑华; 辛虹; 王红秋
Original assignee: Daqing Petrochemical Design Institute
Current assignee: China Huanqiu Contracting and Engineering Corp
Priority date: 2003-11-27
Filing date: 2003-11-27
Publication date: 2005-06-15
Anticipated expiration: 2013-11-27

Abstract

The utility model discloses an upper pillar long round connecting structure of spherical storing tank, comprising a cover plate, a U shaped pillar, a level semi-circle pipe, a reinforcing plate, a connecting plate, and a cross location plate. In the lower part of the U shaped pillar, a horizontal semi-circle pipe is welded. The horizontal semi-circle pipe is directly welded with a ball shell, forming a circular arc welding seam. The reinforcing plate is located between the horizontal semi-circle pipe and the U shaped pillar, welded with the horizontal semi-circle pipe and the U shaped pillar, and the connecting plate is positioned below the U shaped pillar. The cover plate, the U shaped pillar and the horizontal semi-circle pipe are identical in thickness, welded into the long circle structure from the upper side to the lower side. The long circle shaped structure is directly welded with the spherical shell, forming a great circle arc continuously enclosed welded long circle shaped welding seam. The upper supporting column long circle shaped structure of the spherical storage tank is obviously superior to the structural shape given by the recommended standard. The utility model eliminates all defects of the U shaped pillar, and avoids the welding cracking caused by the discontinuity of welding. The welding quality is high, the support condition is good, and the manufacturing cost is reduced.

Description

The upper supporting column long-round-shape linkage structure of spherical storage tank

Technical field: the utility model belongs to the upper supporting column long-round-shape linkage structure of supporting spherical storage tank (hereinafter to be referred as spherical tank) spherical shell.

Background technique: spherical tank is large-scale pressure store container, spherical tank comprises spherical shell and supporting structure, supporting structure is made up of upper supporting column, lower supporting rod, pull bar, upper supporting column respectively with the welding of adjacent Spherical Tank Shell Plates and lower supporting rod, upper supporting column has Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, four kinds of structural types shown in Figure 7.Weld seam between upper supporting column and the Spherical Tank Shell Plates will support all load such as tank body, material, insulation, ladder landing platform, fire prevention spray equipment and snow load, also to guarantee the reliability under wind load and earthquake loading effect, be important structure stress weld seam, key points in design is as follows:

1, has and weld the space preferably, avoid the acute angle welding of weld seam minimum point, improve weldquality.

2, widen distance between two side welds of bottom, improve bearing state.

3, reduce the position of weld seam minimum point, increase fusion length and reduce weld stress, improve bearing state.

4, orthodrome seals weldering continuously, improves welding quality, avoids owing to the discontinuous weld crack that produces of welding.

" spherical storage tank design code " in 1982 version has been recommended Fig. 3, Fig. 4 structure, has the characteristics of above-mentioned key points in design 1.

The structure that " steel spherical storage tank " GB 12337-90 has recommended Fig. 3, Fig. 4 and Fig. 7, Fig. 7 structure has the characteristics of above-mentioned key points in design 1.

" steel spherical storage tank " GB 12337-1998 has recommended all structures among Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, and wherein: Fig. 1, Fig. 2 structure generally do not adopt because the minimum point welding narrow space of weld seam is difficult to welding; Fig. 5, Fig. 6 structure are referred to as U-shaped columniation structure pattern, have in the above-mentioned key points in

design

1,2,3 characteristics, obviously are better than other structural type.But the structure among Fig. 5, Fig. 6 also exists remarkable defective:

Defective 1: the welded structure of Spherical Tank Shell Plates 1, U-shaped post 3 and connecting plate 7 crosspoints is discontinuous;

Defective 2: the weld seam between Spherical Tank Shell Plates 1 and the connecting plate 7 has wedge angle at connecting plate 7 edges, when being welded to the sharp corner of Spherical Tank Shell Plates 1 and connecting plate 7 in the welding process, wedge angle will inevitably be burnt in the molten bath makes connecting plate produce defective, and weld seam swerves and also is easy to generate lack of penetration or defective such as crackle simultaneously.

Spherical shell is adjacent the structure shape design of part weld seam should avoid above defective, the spherical tank of low-temperature operation especially, and the weld crack that is produced by these defectives can cause great harm, does one's utmost to avoid so these defectives are low-temperature pressure container designs, more than or equal to 50m ³Spherical tank all belongs to the 3rd class pressure store container, does not more allow the existence of these defectives.

Summary of the invention: goal of the invention of the present utility model is the upper supporting column long-round-shape linkage structure that a kind of spherical storage tank is provided at the problems referred to above, by changing the linkage structure of upper supporting column and spherical shell, overcome owing to discontinuous, the weld seam of welding swerves and produces weld defects, improve the bearing state of upper supporting column spherical shell.

On Fig. 5 that the technical solution of the utility model is achieved in that in standard recommendation, Fig. 6 architecture basics, at horizontal semicircle pipe of the lower end of U-shaped post welding, form the upper supporting column of long-round-shape linkage structure, simultaneously connecting plate is moved down, connecting plate with change horizontal semicircle pipe being connected of spherical shell into and directly be connected with spherical shell, by original connecting plate and spherical shell directly welding change horizontal semicircle pipe into and spherical shell directly welds.The attachment weld of spherical shell and horizontal semicircle pipe is a circular arc, and the weld seam of long-round-shape upper supporting column and Spherical Tank Shell Plates is the sealing long-round-shape of continuous welding.Because the welding of upper supporting column and Spherical Tank Shell Plates is that orthodrome seals welding continuously, horizontal semicircle pipe is the circular arc supporting in the upper supporting column bottom to spherical shell, overcome the defective that exists in Fig. 5, Fig. 6 structure fully, can satisfy the designing requirement that spherical shell is adjacent the member continuous welding fully after making the welding of pillar and Spherical Tank Shell Plates.

In low temperature spherical tank design, for make with spherical shell directly mutually the connection material of weldering have the low-temperature flexibility identical with spherical shell, use the fitting that links to each other with the manufacturing of spherical shell identical materials usually.In the U-shaped columniation structure that GB 12337-1998 recommends, connecting plate and spherical shell directly weld, need to adopt the price more expensive low-temperature pressure container Plate Steel identical, and because connecting plate may be different with Spherical Tank Shell Plates thickness, the low temperature steel plate of making connecting plate needs buying separately with spherical shell.The pillar long-round-shape structure that designs in the utility model, connecting plate does not weld mutually with spherical shell, belong to general steel structure member, price is low, in the upper supporting column long-round-shape structure, the member that directly welds with spherical shell all adopts the steel plate manufacturing of same thickness, not only does not need to purchase separately the steel plate of different-thickness in addition, also realized linking to each other with the spherical shell equal thickness welding of fitting further improves welding quality.

Beneficial effect:

1, the weld seam between long-round-shape upper supporting column and the adjacent spherical tank coverboard is oblong, along the enforcement of long-round-shape face of weld is that the equal thickness orthodrome seals welding continuously, the welding quality height, avoided the different and discontinuous weld defects that produces of weld seam, had above-mentioned key points in design 1 owing to throat thickness), 2), 3), 4) whole characteristics;

2, eliminate the defective of U-shaped columniation structure, be not only applicable to the design of normal temperature spherical tank, be particularly useful for the design of low temperature spherical tank;

3, the horizontal semicircle pipe of long-round-shape pillar is the circular arc supporting in the bottom to spherical tank, and bearing state is good;

4, in the design of long-round-shape corbeling, connecting plate move to horizontal semicircle pipe below, do not weld mutually with spherical shell, belong to general steel structure member, price is low, the horizontal semicircle pipe of long-round-shape structure adopts and other steel plate manufacturing of facing the part same thickness mutually in addition, does not need to order goods separately, has reduced manufacture cost.

Description of drawings:

Fig. 1 is the direct welding corbeling schematic representation that " steel spherical storage tank " GB 12337-1998 recommends;

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

Fig. 3 is the U-shaped supporting plate welded structure schematic representation that " steel spherical storage tank " GB 12337-1998 recommends;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is the U-shaped post welded structure schematic representation that " steel spherical storage tank " GB 12337-1998 recommends;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the bottom bend welded structure schematic representation that " steel spherical storage tank " GB 12337-1998 recommends;

Fig. 8 is a structural representation of the present utility model, is the C-C sectional view of Fig. 9;

Fig. 9 is that the B of Fig. 8 is to view;

Figure 10 is the A-A sectional view of Fig. 8.

Among the figure: 1 Spherical Tank Shell Plates, 2 cover plates, 3 U-shaped posts, 4 horizontal semicircle pipes, 5 stiffening plates, 6 drain holes, 7 connecting plates, 8 cross positioning plates, 9 circular columns, 10 lower supporting rods, 11 supporting plates.

Embodiment: shown in the structure of Fig. 2, the upper supporting column long-round-shape linkage structure of spherical storage tank is made up of cover plate 2, U-shaped post 3, horizontal semicircle pipe 4, stiffening plate 5, connecting plate 7, cross positioning plate 8, from top to bottom the thickness of cover plate 2, the U-shaped post 3 of welding, horizontal semicircle pipe 4 is identical and directly weld with Spherical Tank Shell Plates 1 successively, and formation equal thickness orthodrome seals the long-round-shape weld seam of welding continuously.Horizontal semicircle pipe 4 is at the lower support spherical shell of U-shaped post 3, stiffening plate 5 is between horizontal semicircle pipe 4 and U-shaped post 3, connecting plate 7 is positioned at the lower end of U-shaped post 3, cross positioning plate 8 be positioned at stiffening plate 5 below, stiffening plate 5, connecting plate 7 have drain hole 6, and the hydrops that produces in horizontal semicircle pipe 4 in the spherical tank using process is discharged through drain hole 6.

Claims

1, a kind of upper supporting column long-round-shape linkage structure of spherical storage tank is made up of cover plate (2), U-shaped post (3), connecting plate (7), cross positioning plate (8), it is characterized in that: this structure also comprises horizontal semicircle pipe (4), stiffening plate (5), wherein:

A, U-shaped post (a 3) bottom welding horizontal semicircle pipe (4), horizontal semicircle pipe (4) directly welds with spherical shell (1), forms the circular arc weld seam;

B, stiffening plate (5) are positioned between horizontal semicircle pipe (4) and the U-shaped post (3), and with horizontal semicircle pipe (4) and U-shaped post (3) welding, connecting plate (7) is positioned at the lower end of U-shaped post (3);

The thickness of c, cover plate (2), U-shaped post (3), horizontal semicircle pipe (4) is identical, is welded into the long-round-shape structure from top to bottom successively; This long-round-shape structure and Spherical Tank Shell Plates (1) are directly welded, and constitute the equal thickness orthodrome and seal the long-round-shape weld seam of welding continuously.