Stainless steel butt weld groove structure for sealing fusible material

Abstract

The utility model discloses a groove structure which is arranged in an interlayer container, the interlayer container comprises a container inner layer cylinder body, a fusible material interlayer, a container outer layer cylinder body and a container sealing cover, a first seal welding seam is formed between the container sealing cover and the container inner layer cylinder body, and a second seal welding seam is formed between the container sealing cover and the container outer layer cylinder body. The container sealing cover covers one end of the double-layer barrel to meet the root gap requirement for welding of the first sealing weld joint and the second sealing weld joint, and the groove structure comprises a container outer barrel U-shaped groove and a container inner barrel single-side V-shaped groove. Through the implementation of the welding groove structure, melting or deformation of fusible materials in an interlayer caused by welding arc and heat conduction in the final welding seam welding process of the interlayer container is avoided, and the final seal welding seam is of a full penetration butt joint structure and meets the welding quality requirement.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of welding structure, concretely relates to a stainless steel butt joint weld groove structure of sealing welding fusible material. BACKGROUND

[0002] Single-layer container design is usually increased manhole to realize the access of operating personnel to meet manufacturing, maintenance or use requirements, but when the sandwich container is designed, the manhole cannot be reserved in the sandwich space, and the sandwich material needs to be completely closed in the sandwich space, especially when the sandwich material is fusible material, once the material is melted, the function of the local area will be weakened or lost, and the melted material will also enter the welding pool to cause welding defects of the weld.

[0003] The existing publication No. CN102019513B discloses a thick metal plate root-avoiding welding groove and processing technology, which sets two layers of gaskets below the thick plate, the first layer of gasket is separated, the second layer is integral, after the welding of the whole weld is completed, the double gasket part is cut off by using the flame cutting mode, and after 3-5mm of the remaining height is reserved, the grinder is used for polishing, so that the weld is one-time formed.

[0004] This scheme adopts the mode of additional gasket, only considers the welding quality of the weld, and cannot meet the technical requirements of sealing welding of fusible material, so that the welding of sealing welding fusible material is one of the manufacturing difficulties of the sandwich container equipment. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the deficiencies of the prior art, and provides a stainless steel butt joint weld groove structure of sealing welding fusible material.

[0006] In order to solve the technical problems, the technical method of the utility model is: a stainless steel butt joint welding groove structure of sealing welding fusible material, the groove structure is arranged in the sandwich container, the sandwich container includes container inner layer cylinder, fusible material sandwich layer, container outer layer cylinder and container cover, the container outer layer cylinder is set on the outside of the container inner layer cylinder, the fusible material is filled and sealed in the fusible material sandwich layer between the container inner layer cylinder and the container outer layer cylinder, the container inner layer cylinder, the fusible material sandwich layer and the container outer layer cylinder form a double-layer cylinder structure, the container cover covers one end of the double-layer cylinder, the container cover realizes the centering and limiting of the container cover and the container outer layer cylinder and the container inner layer cylinder through the group of limiting platforms arranged on the inside of the container outer layer cylinder close to one end of the container cover, a first sealing welding seam is formed between the container cover and the container inner layer cylinder, a second sealing welding seam is formed between the container cover and the container outer layer cylinder, the container cover covers one end of the double-layer cylinder, which realizes the root gap requirement of the first sealing welding seam and the second sealing welding seam welding, the groove structure includes container outer cylinder U-shaped groove and container inner cylinder single-side V-shaped groove, the container outer layer cylinder is integrally provided with container outer layer cylinder self-lining, the container cover is provided with container cover self-lining, sealing welding is carried out at the first sealing welding seam through the container cover self-lining and the container inner cylinder single-side V-shaped groove, sealing welding is carried out at the second sealing welding seam through the container outer layer cylinder self-lining and the container outer cylinder U-shaped groove, the container cover self-lining is arranged between the fusible material sandwich layer and the container inner cylinder single-side V-shaped groove, the container outer layer cylinder self-lining is arranged between the fusible material sandwich layer and the container outer cylinder U-shaped groove, the bottom of the container cover is matched with the shape of one end of the double-layer cylinder.

[0007] Preferably, the opening direction of the container outer cylinder U-shaped groove faces the outside of the container outer layer cylinder, and the opening direction of the container inner cylinder single-side V-shaped groove faces the inside of the container inner layer cylinder.

[0008] Preferably, the cross-sectional shape of the container inner cylinder single-side V-shaped groove is a right triangle, the right angle side of one side of the right triangle is close to the container cover, and the right angle side of the other side is close to the inside of the container inner layer cylinder.

[0009] Preferably, the length of the container inner layer cylinder is greater than the length of the fusible material sandwich layer, and the length of the fusible material sandwich layer is greater than the length of the container outer layer cylinder.

[0010] Preferably, the length of the container inner layer cylinder is greater than the length of the fusible material sandwich layer, and the length of the fusible material sandwich layer is greater than the length of the container outer layer cylinder.

[0011] Preferably, the inside of the container outer layer cylinder is provided with a convex groove for placing the container outer layer cylinder self-lining.

[0012] Preferably, the group of limiting platforms is the contact interface of the container cover bottom boundary and the container outer cylinder self-liner slope of the container outer cylinder, and the outer boundary of the fusible material interlayer.

[0013] Preferably, the angle between the group of limiting platforms and the axis of the double-layer cylinder is 120°-150°.

[0014] Preferably, the welding shrinkage of the first sealing weld and the second sealing weld realizes the close fit of the container cover and the fusible material interlayer.

[0015] Preferably, the interlayer container further comprises a storage cylinder, and the container inner cylinder is sleeved outside the storage cylinder.

[0016] Preferably, the material of the container cover self-liner is the same as that of the container cover, and the material of the container outer cylinder self-liner is the same as that of the container outer cylinder.

[0017] Preferably, the fusible material interlayer is lead material, the first sealing weld and the second sealing weld of the container adopt TIG backing and stick arc welding filling to be greater than or equal to 10 mm, the width of the container outer cylinder self-liner is 10-20 mm, the thickness of the container outer cylinder self-liner is 4-6 mm, the width of the container cover self-liner is 10-15 mm, the root gap of the U-shaped groove of the container outer cylinder and the single-side V-shaped groove of the container inner cylinder is 2-3 mm, the size of the blunt edge below the U-shaped groove of the container outer cylinder is 2-3 mm, the root arc R of the U-shaped groove of the container outer cylinder is 8-12 mm, the angle of the U-shaped groove of the container outer cylinder is 10°-12°, and the groove angle of the single-side V-shaped groove of the container inner cylinder is 40°-50°.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] (1) The utility model discloses a stainless steel butt joint weld groove structure for sealing and welding fusible material, which is used for isolating the interlayer fusible material from entering the welding pool, reducing the influence of welding heat input on the function of the interlayer fusible material, and realizing high-quality and high-efficiency welding of the interlayer container sealing weld.

[0020] (2) The utility model discloses a stainless steel butt joint weld groove structure for sealing and welding fusible material, which directly brings out a liner from the product, does not need to additionally increase the liner, and sets the container cover self-liner between the interlayer fusible material and the single-side V-shaped groove of the container inner cylinder, and sets the container outer cylinder self-liner between the interlayer fusible material and the U-shaped groove of the container outer cylinder to isolate heat and avoid the melting or deformation of the interlayer fusible material. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1, The utility model discloses a structure diagram of a stainless steel butt joint weld groove structure of sealing welding fusible material,

[0022] Fig. 2 , The utility model discloses the enlarged view of A area,

[0023] Fig. 3 , The utility model discloses the enlarged view of B area.

[0024] Mark explanation:

[0025] 1, container inner layer cylinder, 2, fusible material interlayer, 3, container outer layer cylinder, 4, container cover, 5, first sealing welding seam, 6, second sealing welding seam, 7, group limit platform, 8, container outer layer cylinder self -bearing gasket, 9, container outer cylinder U type bevel, 10, container cover self -bearing gasket, 11, container inner cylinder single -sided V type bevel, 12, convex groove. Specific embodiments

[0026] The utility model discloses in combination with the embodiment below and describes the specific implementation of the utility model:

[0027] It should be noted that the content shown in the drawings of the present specification is only used to cooperate with the principles, features and content disclosed in the specification to describe the understanding and reading of the skilled person in this technology, and is not used to limit the implementation conditions of the utility model, and as long as the effect and the purpose of the utility model can be achieved, it should still fall within the scope of the technology disclosed by the utility model.

[0028] Example 1

[0029] The utility model develops a kind of stainless steel butt joint weld groove structure of sealing welding fusible material on the basis of conventional full penetration butt joint bevel structure, utilizes self-lining to separate interlayer substance and butt joint weld completely to avoid the welding quality risk caused by the welding pool of fusible material, reduce the influence of welding heat input on interlayer fusible material function, and determine the minimum thickness of gasket by welding test.

[0030] As Figs. 1-3The utility model discloses a kind of stainless steel butt joint weld groove structures of sealing welding fusible material, the groove structure is arranged in interlayer container, interlayer container includes container inner layer cylinder 1, fusible material interlayer, container outer layer cylinder 3 and container cover 4, the container outer layer cylinder 3 is sleeved in the outside of container inner layer cylinder 1, the fusible material is filled and sealed in the fusible material interlayer between container inner layer cylinder 1 and container outer layer cylinder 3, the container inner layer cylinder 1, fusible material interlayer and container outer layer cylinder 3 form a double-layer cylinder structure, the container cover 4 covers one end of double-layer cylinder, and container cover 4 is realized the centering limit of container cover 4 and container outer layer cylinder 3, container cover 4 and container inner layer cylinder 1 by the group pair limiting platform 7 that is arranged in the inside of container outer layer cylinder 3 close to one end of container cover 4, first sealing welding weld 5 between container cover 4 and container inner layer cylinder 1 is formed, second sealing welding weld 6 between container cover 4 and container outer layer cylinder 3 is formed, and the root gap requirement of first sealing welding weld 5, second sealing welding weld 6 welding is realized by the container cover 4 covering one end of double-layer cylinder, the groove structure includes container outer cylinder U-shaped groove 9 and container inner cylinder single-side V-shaped groove 11, container outer layer cylinder 3 is integrally provided with container outer layer cylinder self-contained gasket 8, container cover 4 is provided with container cover self-contained gasket 10, sealing is carried out at first sealing welding weld 5 by container cover self-contained gasket 10 and container inner cylinder single-side V-shaped groove 11, sealing is carried out at second sealing welding weld 6 by container outer layer cylinder self-contained gasket 8 and container outer cylinder U-shaped groove 9, container cover self-contained gasket 10 is arranged between fusible material interlayer and container inner cylinder single-side V-shaped groove 11, and container outer layer cylinder self-contained gasket 8 is arranged between fusible material interlayer and container outer cylinder U-shaped groove 9;The bottom of container cover 4 is matched with the shape of one end of double-layer cylinder.

[0031] Preferably, the opening direction of the container outer cylinder U-shaped groove 9 faces the outside of the container outer layer cylinder 3, and the opening direction of the container inner cylinder single-side V-shaped groove 11 faces the inside of the container inner layer cylinder 1.

[0032] When assembling, only need to transport the container cover 4 to the upper of the double-layer cylinder structure, and the container cover 4 and the container outer layer cylinder 3, the container cover 4 and the container inner layer cylinder 1 are centered by using the container outer layer cylinder self-contained gasket 8 inclined surface of the container outer layer cylinder 3 and the fusible material interlayer 2 boundary inclined surface, when the container cover 4 slides to the limiting platform 7, it is considered to reach the assembly position, and the root gap requirement of the first sealing welding weld 5 and the second sealing welding weld 6 welding is realized.

[0033] The container cover 4 and the container inner layer cylinder 1 are connected through the container first sealing welding weld 5.

[0034] The container cover 4 and the container outer layer cylinder 3 are connected through the container second sealing welding weld 6.

[0035] The welding shrinkage of the first sealing weld 5 and the second sealing weld 6 realizes the close contact of the container cover 4 and the fusible material interlayer 2.

[0036] The container outer cylinder self-provided gasket 8 is the container outer cylinder self-provided gasket and the container cover self-provided gasket 10 is the container cover self-provided gasket, and the self-provided gasket avoids the damage of the fusible material caused by welding, and realizes full penetration and heat insulation.

[0037] Embodiment 2

[0038] Preferably, the cross-sectional shape of the single-side V-shaped groove 11 of the container inner cylinder is a right triangle, and the right angle of one side of the right triangle is close to the container cover 4, and the right angle of the other side is close to the inner side of the container inner cylinder 1.

[0039] Preferably, the length of the container inner cylinder 1 is greater than the length of the fusible material interlayer, and the length of the fusible material interlayer is greater than the length of the container outer cylinder 3.

[0040] Preferably, the end of the fusible material interlayer close to the container cover 4 gradually increases from a certain value along the radius from the inner side to the outer side.

[0041] Preferably, the inner side of the container outer cylinder 3 is provided with a convex groove 12 for placing the container outer cylinder self-provided gasket 8.

[0042] Preferably, the set of limiting platforms 7 is the contact interface of the bottom boundary of the container cover 4, the inclined surface of the container outer cylinder self-provided gasket 8 of the container outer cylinder 3, and the outer side boundary of the fusible material interlayer.

[0043] Preferably, the welding shrinkage of the first sealing weld 5 and the second sealing weld 6 realizes the close contact of the container cover 4 and the fusible material interlayer 2.

[0044] Preferably, the interlayer container further comprises a storage cylinder, and the container inner cylinder 1 is sleeved on the outer side of the storage cylinder.

[0045] The storage cylinder is used to save or transport the substances which have radioactive radiation or other hazards to people and environment. For example, when the lead material for preventing nuclear radiation is filled, the container can be used for temporary storage or transportation of nuclear waste or nuclear fuel to avoid the radioactive hazards to people and environment.

[0046] Preferably, the material of the container cover self-provided gasket 10 is the same as that of the container cover 4, and the material of the container outer cylinder self-provided gasket 8 is the same as that of the container outer cylinder 3.

[0047] Embodiment 3

[0048] Preferably, the included angle between the set of limiting platforms 7 and the axis of the double-layer cylinder is 120°-150°.

[0049] In order to meet the centering and limiting function, the included angle between the matched limiting platform and the axis of the cylinder assembly is preferably 120°-150°. If the angle is too small, the fusible material 2 is easily damaged, and if the angle is too large, the centering and limiting function is weakened.

[0050] Preferably, the fusible material interlayer is lead material, the first sealing weld 5 and the second sealing weld 6 of the container are welded by TIG backing and stick arc welding filling to ≥10mm, the width of the self-lining pad 8 of the outer cylinder of the container is 10-20mm, the thickness of the self-lining pad 8 of the outer cylinder of the container is 4-6mm, the width of the self-lining pad 10 of the container cover is 10-15mm, the gap between the root of the U-shaped groove 9 of the outer cylinder of the container and the single-side V-shaped groove 11 of the inner cylinder of the container is 2-3mm, the size of the blunt edge below the U-shaped groove 9 of the outer cylinder of the container is 2-3mm, the root arc R of the U-shaped groove 9 of the outer cylinder of the container is 8-12mm, and the angle of the U-shaped groove 9 of the outer cylinder of the container is 10°-12°; the groove angle of the single-side V-shaped groove 11 of the inner cylinder of the container is 40°-50°.

[0051] When the first sealing weld 5 and the second sealing weld 6 are welded by the prepared welding process, the self-lining pad 10 of the container cover and the self-lining pad 8 of the outer cylinder of the container are relied on to isolate the welding arc and the fusible material, and meanwhile, under the cooperation of appropriate welding process, groove type and size, and pad thickness, the melting or deformation of the fusible material caused by welding heat conduction is effectively avoided, and the full-penetration butt joint structure and welding quality requirements of the weld are realized.

[0052] After the welding process scheme is determined according to the structural size characteristics of the equipment, the technical capability of the company and the qualified welding process evaluation, the appropriate thickness and width of the lining pad are preliminarily determined in combination with the physical properties (such as melting point, heat resistance, linear expansion coefficient, etc.) of the fusible material and the minimum thickness of the fusible material required by the equipment, and then finally determined through tests, so as to ensure that the fusible material will not melt or slightly deform during the welding process and can restore to the original state after cooling to room temperature. Finally, the limiting platform structure required by the equipment drawing is optimized to realize the centering and limiting function according to the assembly requirements of the container cover, the inner layer cylinder of the container and the outer layer cylinder of the container and engineering experience.

[0053] The design process of the utility model is as follows: the container cover comprises a top cover and a bottom cover, the inner layer cylinder of the container, the outer layer cylinder of the container and the bottom cover are welded, then the fusible material is filled in, then the contact surface close to the container cover is processed into the shape required by the design, as shown in Figs. 1-3 , then the top cover is covered, finally the welding of the first sealing weld and the second sealing weld is realized, and the problem of sealing of the fusible material in the interlayer container is solved.

[0054] Through the implementation of the utility model, not only the melting or deformation of the fusible material in the interlayer caused by the welding arc and heat conduction in the final welding process of the interlayer container is avoided, but also the full penetration butt joint structure and welding quality requirements of the final sealing weld are realized.

[0055] The preferred embodiments of the utility model are described in detail above, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary geologists without departing from the purpose of the utility model.

[0056] Many other changes and modifications can be made without departing from the spirit and scope of the utility model. It should be understood that the utility model is not limited to the specific embodiments, and the scope of the utility model is defined by the appended claims.

Claims

1. A stainless steel butt weld groove structure of sealing weldable fusible material, the groove structure is arranged in a sandwich container, the sandwich container comprises a container inner layer cylinder (1), a fusible material sandwich layer (2), a container outer layer cylinder (3) and a container cover (4), the container outer layer cylinder (3) is sleeved outside the container inner layer cylinder (1), the fusible material is filled and sealed in the fusible material sandwich layer (2) between the container inner layer cylinder (1) and the container outer layer cylinder (3), the container inner layer cylinder (1), the fusible material sandwich layer (2) and the container outer layer cylinder (3) form a double-layer cylinder structure, the container cover (4) covers one end of the double-layer cylinder, the container cover (4) is centered and limited by a set of limiting platforms (7) arranged on the inner side of the container outer layer cylinder (3) near the end of the container cover (4), the container cover (4) is centered and limited with the container outer layer cylinder (3) and the container inner layer cylinder (1), a first sealing weld (5) is formed between the container cover (4) and the container inner layer cylinder (1), a second sealing weld (6) is formed between the container cover (4) and the container outer layer cylinder (3), the container cover (4) covers one end of the double-layer cylinder to realize the root gap requirement of the first sealing weld (5) and the second sealing weld (6), characterized in that: The groove structure comprises a container outer cylinder U-shaped groove (9) and a container inner cylinder single-side V-shaped groove (11), the container outer layer cylinder (3) is integrally provided with a container outer layer cylinder self-contained gasket (8), the container cover (4) is provided with a container cover self-contained gasket (10), the first sealing weld (5) is sealed by the container cover self-contained gasket (10) and the container inner cylinder single-side V-shaped groove (11), the second sealing weld (6) is sealed by the container outer layer cylinder self-contained gasket (8) and the container outer cylinder U-shaped groove (9), the container cover self-contained gasket (10) is arranged between the fusible material interlayer (2) and the container inner cylinder single-side V-shaped groove (11), and the container outer layer cylinder self-contained gasket (8) is arranged between the fusible material interlayer (2) and the container outer cylinder U-shaped groove (9); the bottom of the container cover (4) is matched with the shape of one end of the double-layer cylinder.

2. The groove structure of a stainless steel butt weld of a brazing filler metal according to claim 1, characterized in that: The container outer cylinder U-shaped groove (9) is open to the outside of the container outer layer cylinder (3), and the container inner cylinder single-side V-shaped groove (11) is open to the inside of the container inner layer cylinder (1).

3. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The container inner cylinder single-side V-shaped groove (11) has a right-angled triangle cross section, one right-angled side of the right-angled triangle is close to the container cover (4), and the other right-angled side is close to the inside of the container inner layer cylinder (1).

4. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The length of the container inner layer cylinder (1) is greater than the length of the fusible material interlayer (2), and the length of the fusible material interlayer (2) is greater than the length of the container outer layer cylinder (3). The radius of the end of the fusible material interlayer (2) close to the container cover (4) gradually increases from the inside to the outside.

5. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The inside of the container outer layer cylinder (3) is provided with a convex groove (12) for placing the container outer layer cylinder self-contained gasket (8).

6. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The group of limiting platforms (7) are the contact interfaces of the bottom boundary of the container cover (4), the inclined surface of the container outer layer cylinder self-contained gasket (8) of the container outer layer cylinder (3), and the outside boundary of the fusible material interlayer (2).

7. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The included angle between the group of limiting platforms (7) and the axis of the double-layer cylinder is 120°-150°.

8. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The welding shrinkage of the first sealing weld (5) and the second sealing weld (6) realizes the close adhesion of the container cover (4) and the fusible material interlayer (2).

9. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The interlayer container further comprises a storage cylinder, and the container inner layer cylinder (1) is arranged on the outside of the storage cylinder.

10. The groove configuration for stainless steel butt welds of fuse material according to claim 1, characterized in that: The material of the container cover self-contained gasket (10) is the same as that of the container cover (4), and the material of the container outer layer cylinder self-contained gasket (8) is the same as that of the container outer layer cylinder (3). The fusible material interlayer (2) is lead material, the first sealing weld (5) and the second sealing weld (6) of the container are filled to be greater than or equal to 10 mm by TIG backing and stick arc welding, the width of the self-lining (8) of the outer cylinder of the container is 10-20 mm, the thickness of the self-lining (8) of the outer cylinder of the container is 4-6 mm, the width of the self-lining (10) of the container cover is 10-15 mm, the root gap between the U-shaped groove (9) of the outer cylinder of the container and the single-side V-shaped groove (11) of the inner cylinder of the container is 2-3 mm, the size of the blunt edge below the U-shaped groove (9) of the outer cylinder of the container is 2-3 mm, the root arc R of the U-shaped groove (9) of the outer cylinder of the container is 8-12 mm, and the angle of the U-shaped groove (9) of the outer cylinder of the container is 10°-12°; the bevel angle of the single-side V-shaped groove (11) of the inner cylinder of the container is 40°-50°.

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