CN210774745U

CN210774745U - Welded type storehouse body structure for preventing thermal expansion and cold contraction deformation

Info

Publication number: CN210774745U
Application number: CN201921643785.9U
Authority: CN
Inventors: 金旭滨
Original assignee: Friend Tianyu Environment Technology Chengdu Co ltd
Current assignee: Friend Tianyu Environment Technology Chengdu Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-16
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a welded type storehouse body prevents expend with heat and contract with cold deformation structure for when the internal wall of storehouse takes place expend with heat and contract with cold at the in-process of high low temperature cycle test, prevent that the flexible length of the internal wallboard of adjacent storehouse from taking place the accumulation phenomenon, mainly include two piece at least storehouse boards that bond each other, adjacent the one end that the internal wallboard of storehouse is close to each other all is connected with the recess with internal wallboard integrated into one piece, and is adjacent the second lateral wall top of recess welds each other, through set up the recess on the internal wallboard for expend with heat and contract with cold deformation of the test chamber storehouse body is turned into the local deformation of recess, in order to reach the effect of avoiding the whole deformation of storehouse body, sets up the welding point on the top of the adjacent two recess lateral walls that contact simultaneously, can avoid burning polyurethane when welding again.

Description

Welded type storehouse body structure for preventing thermal expansion and cold contraction deformation

Technical Field

The utility model belongs to the welding field of the sealed test cabin body, concretely relates to welded type storehouse body prevents expend with heat and contract with cold deformation structure.

Background

In order to improve the service life, the air tightness and the electromagnetic shielding performance of a large environmental test chamber body in recent years, a full-welding chamber body is gradually used, namely, an argon arc welding continuous welding mode is adopted to continuously weld the joint of the stainless steel wall on the inner side of the chamber body, so that a sealing structure is formed in the test chamber body; general in the industry at presentAs shown in fig. 6, a hollow liner tube is arranged at a position where a polyurethane foam layer is in contact with the inner wall of a warehouse body to achieve an effect of isolating a welding point, so that the polyurethane foam layer is prevented from being ignited, but in actual production, in addition to the need of avoiding ignition of a polyurethane thermal insulation material in a welding process, a test cabin body is ensured not to be bent and deformed during a temperature cycle test; seam welding technology of most warehouse body suppliers can only ensure that a polyurethane foaming layer cannot be ignited in the welding process, but cannot solve the problem that the service life of a warehouse body is shortened due to bending deformation of the whole warehouse body caused by accumulation phenomenon caused by metal expansion and contraction effect in repeated high-low temperature cycle experiments after the whole warehouse body is welded, the defect is particularly serious in a large-scale welding type environment test cabin body, the size of the large-scale welding type environment test cabin body is 10 mx 7.5 mx 4m, and the total volume of the large-scale welding type environment test cabin body is 300 mx 4m³When the interior of the warehouse body is subjected to a high-low temperature cycle test at-70 to +100 ℃, the change amount of the stainless steel material on the inner wall in the length direction is about 29mm, the outer wall of the warehouse body is always in a normal temperature environment and cannot stretch, the phenomenon is similar to the temperature effect of a bimetallic strip, as shown in fig. 4, the continuously welded warehouse body can be subjected to bending deformation as same as that of the bimetallic strip in the high-low temperature cycle test process, and the warehouse body can be subjected to irreparable tearing.

Disclosure of Invention

The utility model provides a welded type storehouse body prevents expend with heat and contract with cold deformation structure has mainly improved the storehouse body after the welding and after high low temperature cycle test relapseing, because the metal expend with heat and contract with cold effect produces the problem that the accumulation phenomenon made the whole bending deformation of storehouse board.

In order to solve the above problem, the utility model adopts the following technical scheme:

a welded type storehouse body structure for preventing thermal expansion and cold contraction deformation comprises at least two mutually bonded storehouse plates and a bonding seam between adjacent storehouse plates, wherein each storehouse plate comprises an outer wall plate and an inner wall plate, and a polyurethane foaming layer clamped between the outer wall plate and the inner wall plate, one end, close to each other, of each inner wall plate is connected with a groove integrally formed with the inner wall plate, two opposite side walls of the groove are a first side wall and a second side wall, one end, close to a groove opening, of the first side wall is connected with the inner wall plate, the second side wall is far away from the side wall plates, the groove opening ends face the inner side of the storehouse body, the second side walls of the adjacent grooves are mutually contacted and have the same groove opening direction, one end, far away from the polyurethane foaming layer, of the adjacent second side walls is a welding end, the adjacent second side walls are mutually welded, and the welding point is not adjacent to the polyurethane foaming layer, can prevent at welding process ignition polyurethane foaming layer, two adjacent bond each other between the storehouse board, it is adjacent welding seal between the interior wallboard, when carrying out high temperature test, it is adjacent the first side wall of recess is close to each other for the whole that polylith storehouse board connects into can not produce great deformation, and in the same way, when carrying out low temperature test, it is adjacent the first side wall of recess is kept away from each other.

Further, the groove is in a U shape with better metal fatigue resistance.

Furthermore, one end of the outer wall board close to the bonding seam is bent into an L shape towards the inner wall board, so that the integrity of the warehouse board is improved.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the end, which is contacted with each other, of each adjacent inner wall plate is provided with the groove with the opening facing the inner side of the warehouse body, so that the telescopic deformation of the inner wall plates is converted into the mutual approaching or separating of the first side walls of the adjacent grooves, the expansion and contraction deformation of the warehouse body of the test cabin is controlled in the allowable local deformation, the overall deformation of the warehouse body is avoided, and the deformation can be controlled in the size of a single warehouse plate due to the fact that the telescopic length of the adjacent inner wall plates cannot be accumulated, so that the service life of the overall warehouse body is longer, and the possibility of tearing of the warehouse body is avoided;

(2) by arranging the welding position at one end of the second side wall of the adjacent groove far away from the polyurethane foaming layer, sparks generated in the welding process only fall into the groove and cannot contact the polyurethane foaming layer, so that the danger of igniting the polyurethane foaming layer does not exist in the welding process;

(3) one end of the outer wall plate close to the bonding seam is bent towards the inner wall plate to form an L shape, so that the combination degree of the outer wall plate and the polyurethane foaming layer is improved, and the integrity of the warehouse plate is improved;

drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the schematic diagram of the groove deformation when heated.

Fig. 3 is the schematic diagram of the groove deformation during cooling of the utility model.

Fig. 4 is a schematic view of prior art continuous weld library body deformation.

Fig. 5 is the deformation schematic diagram of the continuous welding reservoir body of the present invention.

Fig. 6 is a schematic structural diagram of a prior art welding technique.

The labels in the figure are: 1 outer wallboard, 2 bonding seams, 3 polyurethane foam layers, 4 welding ends, 5 second side walls and 6 inner wallboard.

Detailed Description

As shown in fig. 1-6, the present embodiment provides a welded type storage body structure for preventing thermal expansion and cold contraction deformation, comprising at least two storage plates adhered to each other, wherein the storage plates comprise an outer wall plate 1 and an inner wall plate 6, and a polyurethane foam layer 3 sandwiched between the outer wall plate 1 and the inner wall plate 6, a gap between the adjacent storage plates is an adhesive joint 2, the adhesive joint 2 is coated with an adhesive, the adjacent inner wall plates are welded and sealed to each other, so that the whole storage body becomes a sealed whole, one end of the adjacent inner wall plate 6 close to each other is connected to an integrally formed groove, two opposite side walls of the groove are a first side wall and a second side wall 5, one end of the first side wall close to an opening of the groove is connected to the inner wall plate 6, the second side wall 5 is far away from the inner wall plate 6, the opening end of the groove faces to the inside of the storage body, the inside of the storage body refers to the inside of the sealed storage body formed by connecting a, the adjacent polyurethane foaming layers 3 are mutually bonded, the welding end 4 is arranged at one end, far away from the polyurethane foaming layers 3, of the second side wall 5 of the adjacent groove, the welding ends 4 of the adjacent second side walls 5 are mutually welded, because the welding end 4 is not close to the polyurethane foaming layer 3, sparks generated in the welding process only fall into the groove, the polyurethane foaming layer 3 can be prevented from being ignited in the welding process, one end of the outer wall plate 1 close to the bonding seam 2 is bent into an L shape towards the direction of the inner wall plate 6, the adjacent outer wall plates 1 are bonded with each other, so that each warehouse plate is completely connected in a sealing way, thereby improving the strength and the sealing performance of the whole warehouse body, the groove adopts a U-shaped cross section to provide stronger resistance to metal fatigue, the two ends, close to the adjacent warehouse boards, of the inner wall board of the warehouse board are connected with the grooves, and the warehouse body is formed by connecting and sealing at least two warehouse boards.

After two adjacent storehouse boards bond each other and interior wallboard 6 accomplishes the welding and seals, as shown in fig. 2, when carrying out high temperature test, it is adjacent the first side wall of recess is close to each other for the whole that polylith storehouse board connects into can not produce great deformation, and on the same principle, as shown in fig. 3, when carrying out low temperature test, it is adjacent the first side wall of recess is kept away from each other.

As shown in fig. 4, a library body with a length of 10m is formed by sequentially welding a plurality of library plates, the library body is welded by using the existing liner tube isolation welding point mode, and after the high-low temperature cycle test is completed, the bending deformation of the whole body is up to 50 mm; as shown in fig. 5, the storehouse body of same specification uses the utility model discloses a welded type storehouse body prevents expend with heat and contract with cold deformation structure, after accomplishing high low temperature cycle test, can disperse whole deformation to every storehouse board, makes whole deformation reduce by a wide margin, and the whole bending deformation volume of the storehouse body can be controlled within 5mm for the holistic deformation volume of the storehouse body is little can not influence the life-span of the storehouse body, and has also prevented that higher bending deformation volume from leading to the storehouse body to take place irreparable tear or the problem of deformation.

The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and the utility model should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a welded type storehouse body prevents expend with heat and contract with cold deformation structure, includes two piece at least storehouse boards that bond each other, the storehouse board includes exterior wall board (1) and interior wallboard (6) to and press from both sides polyurethane foam layer (3) between exterior wall board (1) and interior wallboard (6), adjacent gap between the storehouse board is bond joint (2), be coated with adhesive, its characterized in that in bond joint (2): it is adjacent the one end that interior wallboard (6) are close to each other all is connected with the recess with interior wallboard (6) integrated into one piece, the double-phase relative lateral wall of recess is first lateral wall and second lateral wall (5), first lateral wall is close to open-ended one end and is connected with interior wallboard (6), interior wallboard (6) are kept away from in second lateral wall (5), the open-ended orientation storehouse internal side, it is adjacent second lateral wall (5) the mutual contact of recess and open-ended direction are the same, and are adjacent the one end that polyurethane foaming layer (3) were kept away from in second lateral wall (5) is weld end (4), and is adjacent weld end (4) the mutual welding of second lateral wall (5).

2. The welded library body thermal expansion and cold contraction prevention structure of claim 1, wherein: the groove is U-shaped.

3. The welded library body thermal expansion and cold contraction prevention structure of claim 1, wherein: one end of the outer wall plate (1) close to the bonding seam (2) is bent into an L shape towards the direction of the inner wall plate (6), and the adjacent ends of the L shapes close to each other are bonded with each other.