CN2459134Y

CN2459134Y - Circular shape joint welding seam groove structure for welding gas cylinder

Info

Publication number: CN2459134Y
Application number: CN 00245913
Authority: CN
Inventors: 李四民
Original assignee: BEIJING METAL STRUCTURE FACTORY
Current assignee: BEIJING METAL STRUCTURE FACTORY
Priority date: 2000-07-28
Filing date: 2000-07-28
Publication date: 2001-11-14
Anticipated expiration: 2010-07-28

Abstract

The utility model relates to a circular joint welding seam beveling structure for a welding gas cylinder, which belongs to the technical field of a metal welding structure and relates to a welding beveling type. The utility model is characterized in that one end of a cylinder and one end of a sealing head are mutually butted. One end head on an A is made into a step type reefing structure. The outer diameter of a reefing position is matched with the inner diameter of an end head of a C which is butted. A part of the reefing position on the A is axially inserted in an inner hole of the end head of the other C which is connected with the position. Then, the circular joint welding seam beveling structure for a welding gas cylinder which has a beveling with an angle of alpha on a longitudinal cross section which passes through a shaft center of the gas cylinder is formed. The angle of alpha can range from 60 DEG to 100 DEG.

Description

Welded gas cylinder ring-type butt weld divided edge structure

Welded gas cylinder ring-type butt weld divided edge structure belongs to the metal weldedstructure technical field, relates to the bevel for welding pattern.

At present in the gas cylinder industrial production, because of the steel welding gas cylinder diameter of 400L, 800L volume little, there is not easy-operating problem in the gas cylinder, so gas cylinder manufactory all adopts the single fillet welded joint geometry of band backing plate, (implication sees the description of drawings part for details among the figure) as shown in Figure 2 to its ring-type butt weld.A1 is that cylindrical shell, C1 are that end socket, E are that backing plate, α 1 are the bevel for welding angle.This slope type is a kind of common joint geometry in China's bevel for welding pattern standard, though this pattern helps the realization of minor diameter cylindrical shell butt joint ring-type weld seam single-sided welding operation, but also come with some shortcomings: in process of production, backing plate is that independent parts exist all the time, needs blanking, shearing, roller circle, just can finish multiple working procedures such as dress, welding; And the quality of backing plate assembly quality will directly have influence on the welding quality of whole girth joint.

The purpose of this utility model provides a kind of novel steel welding gas cylinder ring-type butt weld divided edge structure that overcomes the deficiency that exists in the above-mentioned known technology.

The utility model is achieved in that a kind of by cylindrical shell, the welded gas cylinder ring-type butt weld divided edge structure that the structure of the bevel for welding of end socket is formed, an end that it is characterized in that the mutual butt joint on two of cylindrical shell and the end sockets, wherein there is a termination on the A to make the closing in structure of step, internal diameter on the termination on the external diameter at the position after the closing in and another C that connects matches, in the endoporus of the termination on another C that the axial insertion of a part of the last closing in of A rear is joined with it, the bevel angle of having formed on the longitudinal cross-section of crossing the axle center of gas cylinder is the welded gas cylinder ring-type butt weld divided edge structure of α, and the α angle can be from 60 degree to 100 degree.

Described welded gas cylinder ring-type butt weld divided edge structure, the radius that it is characterized in that the outside wall surface of closing in forward part on outside wall surface optimum structure in closing in position step on the A on the longitudinal cross-section of crossing the axle center of gas cylinder is by A be the inscribed circle segmental arc of R1 and close up after the radius of outside wall surface of part be tangent being formed by connecting of circumcircle segmental arc of R2, a termination portion of common tangent and the C part that connects of crossing the circular arc at two arc section point of contacts forms best groove angle α and equals 80 degree to 90 degree.

Described welded gas cylinder ring-type butt weld divided edge structure, the end on the C that it is characterized in that connecting with the last closing in position of A has normally used standard bevel for welding.

Described welded gas cylinder ring-type butt weld divided edge structure is characterized in that the end that docks with end socket on the cylindrical shell makes the closing in structure of step.

The utility model is in the butt end of cylindrical shell and end socket, and step closing in structure is made by the termination portion on the cylindrical shell, and perhaps step closing in structure is made by the termination portion on the end socket.And an end is made the closing in structure on cylindrical shell, and technology is simple, and expense is low to be preferred plan.Part termination portion after cylindrical shell closes up axially inserts along gas cylinder in the endoporus of end socket butt end, and the external diameter of the barrel of closing in rear section is complementary to locate with inner diameter on the end socket and docks.End socket butt joint end has China's normally used standard divided edge structure pattern.The former shell portion of cylindrical shell step closing in structure has two kinds with the structure of the transition portion of closing in rear section: first kind is directly by two tangent connections of arc section, as shown in Figure 1, promptly on the longitudinal cross-section of crossing the gas cylinder axle center, the radius of cylinder body outer wall is that the inscribed circle segmental arc of R1 is tangent connection of circumcircle segmental arc of R2 with the radius of the outer wall of closing in rear section; Second kind is that the outside wall surface of the shell portion after former shell portion on the longitudinal cross-section of crossing the gas cylinder axle center and closing in is connected by the oblique line section, and the outer wall of oblique line Duan Yuyuan cylinder body outer wall and closing in rear section is connected by the transition of angle, garden.Recommend first kind directly by the structure of two tangent connections of arc section, this processability of product structure is good, stress distribution even, improve stress.Cross the arc section and the common tangent at the arc section point of contact of crossing radius R2 and the steel welding gas cylinder ring-type butt weld divided edge structure that the groove on the end socket has been formed the α angle of radius R1.The α best angle is 8D degree to 90 degree.

Advantage of the present utility model: reduced the complicated procedures of forming of making backing plate in the former bevel for welding structure, improved the assembly precision of cylindrical shell and end socket, simplified, improved welding quality, improved productivity ratio, reduced cost to the dress operation.

Description of drawings: Fig. 1 to Fig. 4 is the accompanying drawing of this specification, and each figure is a schematic diagram.

Fig. 1 is the local groove schematic diagram of Fig. 3 gas cylinder A-A section;

Fig. 2 is the local groove schematic diagram of Fig. 4 gas cylinder B-B section;

Fig. 3 is the steel gas cylinder schematic diagram of the utility model groove welding;

Fig. 4 is the steel gas cylinder schematic diagram of known groove welding.

Chain-dotted line is represented center line among each figure, local structure has wave to disconnect, hatching is arranged on the section, heavy line is represented outline line, groove place two point is drawn the weld seam after imaginary line is represented to weld, identical parts, structure or identical implication represented in same-sign or code name among each figure, no longer repeat among each figure.H is the wall thickness of cylindrical shell, end socket, and the external diameter of cylindrical shell, end socket is that Ф 3, internal diameter are Ф 2, the height D of the groove bottom of cylindrical shell, end socket.Fig. 1 is the part sectioned view along the longitudinal cross-section that gas cylinder axial centre A-A cuts open by steel gas cylinder Fig. 3 of the utility model divided edge structure weldering system, the structural representation of expression the utility model bevel for welding, A is a cylindrical shell, B is a weld seam, C is an end socket, Ф 1 is the internal diameter of cylindrical shell closing in rear section, R1 is the radius of the inscribed circle segmental arc of the cylinder body outer wall that do not close up, R2 is the radius of circumcircle segmental arc of the outer wall of cylindrical shell closing in rear section, two tangent connections of arc section, β is the bevel angle of end socket end by China's standard common, α is for being the radius segmental arc with R1 and the bevel angle of the present utility model of common tangent and the groove formation of known seal head end at point of contact that is the segmental arc of radius with R2, and Fig. 1 has totally reflected the bevel for welding structure of closing in place.Fig. 2 is the part sectioned view of known steel welding gas cylinder shown in Figure 4 along the cross section that axial line is vertically cut open, and A1 is a cylindrical shell, and B1 is a weld seam, C1 is an end socket, E is a backing plate, and α 1 is the bevel for welding angle of China's standard common, and Fig. 2 has totally reflected the bevel for welding structure of known technology.The steel gas cylinder of the utility model groove welding that Fig. 3 is put for crouching is analysed and observe symbol A-A along the bottle central shaft to having among the figure.The steel gas cylinder of the known technology groove welding that Fig. 4 is put for crouching is analysed and observe symbol B-B along the bottle central shaft to having among the figure.

Embodiment: Fig. 1, Fig. 3 are the accompanying drawing of present embodiment, and each figure implication is seen the description of drawings part.

The steel welding gas cylinder of a kind of 400L, cylindrical shell wall thickness are got 8 millimeters, and the wall thickness of end socket is also got 8 millimeters.It along the local A-A profile at the groove place of the longitudinal cross-section that the gas cylinder axial line is cut open as shown in Figure 1.One end of cylindrical shell butt joint is closed up into the structure of step by special equipment.Part after the closing in is inserted in the endoporus of butt end of end socket, and the internal diameter of the cylindrical shell external diameter after the closing in and the wall at end socket place designs the dimensional tolerance assembling that is complementary.Shell portion outer wall before and after closing up is by the tangent connection of two circular arcs, and the radius of circular arc is R1, R2.The groove bottom level D of end socket gets 2 millimeters, and groove angle β gets 15 degree.Total bevel angle α gets 80 degree.

Present embodiment has been simplified the dress operation under the condition that guarantees identical safe handling, has improved assembly precision, has improved welding quality, has improved productivity ratio, has reduced cost.

Claims

1, a kind of by cylindrical shell, the welded gas cylinder ring-type butt weld divided edge structure that the structure of the bevel for welding of end socket is formed, an end that it is characterized in that the mutual butt joint on two of cylindrical shell and the end sockets, wherein there is a termination on (A) to make the closing in structure of step, internal diameter on the termination on the external diameter at the position after the closing in and another (C) of connecting matches, in the endoporus of the termination on the axial insertion of a part of closing in rear is joined with it (A) another (C), the bevel angle of having formed on the longitudinal cross-section of crossing the axle center of gas cylinder is the welded gas cylinder ring-type butt weld divided edge structure of (α), and (α) angle can be from 60 degree to 100 degree.

2, welded gas cylinder ring-type butt weld divided edge structure as claimed in claim 1, the radius of outside wall surface that it is characterized in that going up the closing in forward part by (A) at the outside wall surface optimum structure that (A) on the longitudinal cross-section of crossing the axle center of gas cylinder goes up closing in position step for the inscribed circle segmental arc of (R1) and the radius of the outside wall surface of the part after closing up be tangent being formed by connecting of circumcircle segmental arc of (R2), termination portion of common tangent and (C) part that connects of crossing the circular arc at two arc section point of contacts forms best groove angle (α) and equals 80 degree to 90 degree.

3, welded gas cylinder ring-type butt weld divided edge structure as claimed in claim 1 is characterized in that having normally used standard bevel for welding with an end of (A) going up on (C) that the closing in position connects.

4,, it is characterized in that the end that docks with end socket on the cylindrical shell makes the closing in structure of step as claim 1,2,3 described welded gas cylinder ring-type butt weld divided edge structures.