Inner support type girth welding equipment for short cylinder of pressure vessel

Abstract

The utility model relates to a pressure vessel short cylinder inner support type girth welding device, which comprises a base, inner support tools and a tower body, the tower body is installed on the base, a plurality of inner support tools are evenly arranged on the outer side of a tower body of the tower body in a surrounding mode, each inner support tool comprises an installation frame, an electric push cylinder, a guide line rail and an expansion block, the installation frame is in an L shape, and the electric push cylinder is arranged on the installation frame. One end of the mounting frame is connected with the tower body, the other end of the mounting frame is kept horizontal, the electric push cylinder and the guide wire rail are mounted on the mounting frame side by side, the expansion block is movably mounted on the guide wire rail, and the output end of the electric push cylinder is connected with the expansion block to drive the expansion block to do reciprocating linear motion. The inner supporting tool is adopted to be matched with the tower body, it is guaranteed that the inner roundness of a workpiece meets the requirement during welding, the workpiece is expanded through the inner supporting tool, the inner supporting tool can adapt to workpieces with different inner diameters, and the welding precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of non-standard welding equipment, in particular to short-tube inner-support type annular seam welding equipment for pressure vessels. Background Art

[0002] According to the customer's welding requirements, it is necessary to weld the short ring material of S301 series stainless steel with a thickness of 1.2mm for circumferential seam welding. Several short rings are welded together in a long cylindrical shape, and a vertical welding structure is required to ensure that the deformation error of the short ring shape is small. The current welding method mostly uses horizontal welding, which cannot guarantee the circumferential welding error, and the current welding tooling cannot be adapted to the hoisting vertical welding. The gap and misalignment of the two short rings do not meet the assembly requirements, and the accuracy of the circumferential welding seam cannot be guaranteed, so it needs to be improved. Utility Model Content

[0003] Based on this, it is necessary to provide short-tube internal support annular seam welding equipment for pressure vessels to address the above problems.

[0004] The short-tube internal support type annular seam welding equipment for pressure vessels comprises a base, an internal support tool and a tower body, wherein the tower body is mounted on the base, and a plurality of internal support toolings are evenly arranged around the outer side of the tower body, wherein the internal support tooling comprises a mounting frame, an electric push cylinder, a guide rail and a tightening block, wherein the mounting frame is L-shaped, one end of the mounting frame is connected to the tower body, and the other end is kept horizontal, the electric push cylinder and the guide rail are mounted thereon side by side, the tightening block is movably mounted on the guide rail, and the output end of the electric push cylinder is connected to the tightening block to drive the tightening block to perform reciprocating linear motion.

[0005] Preferably, a positioning tool is also included, and the positioning tool includes a lifting platform and a positioning frame. The lifting platform is installed on the side of the tower body, and the positioning frame is vertically installed on the base. A beam positioner is arranged on the side of the positioning frame away from the tower body.

[0006] Preferably, the outer edge of the expansion block is arranged in an arc shape, and a notch is arranged on the outer edge of the expansion block corresponding to the beam.

[0007] Preferably, the base is in a collapsed shape.

[0008] Preferably, a turntable is provided on the upper end surface of the base, and the tower body is installed on the turntable.

[0009] Preferably, the number of inner support tooling on the same horizontal plane is four sets.

[0010] Preferably, a lifting lug is provided on the top of the tower body.

[0011] The utility model is beneficial in that: the inner support tooling is used in combination with the tower body to ensure that the inner roundness of the workpiece meets the requirements during welding; the inner support tooling expands the workpiece and can adapt to workpieces of different inner diameters to ensure welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the assembly of a short-tube internal support type annular seam welding equipment for a pressure vessel according to one embodiment;

[0013] Figure 2 It is a top view schematic diagram of the short-tube internal support annular seam welding equipment for pressure vessels. DETAILED DESCRIPTION

[0014] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0015] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] like Figure 1~2As shown, the short-tube internal support type annular seam welding equipment for pressure vessels includes a base 1, an internal support tool 2 and a tower body 3. The tower body 3 is installed on the base 1, and a plurality of internal support toolings 2 are evenly arranged around the outer side of the tower body 3. The internal support tooling 2 includes a mounting frame 21, an electric push cylinder 22, a guide rail 23 and a tightening block 24. The mounting frame 21 is L-shaped, one end of the mounting frame 21 is connected to the tower body 3, and the other end is kept horizontal. The electric push cylinder 22 and the guide rail 23 are installed side by side thereon, and the tightening block 24 is movably installed on the guide rail 23. The output end of the electric push cylinder 22 is connected to the tightening block 24 to drive the tightening block 24 to perform reciprocating linear motion. Specifically, the base 1 is in the shape of a truncated cone, the cross section of the tower body 3 is in the shape of a rhombus, and is designed to be a hexagonal rhombus, and is hollow, weight-reducing, the tower body 3 is vertically mounted on the base 1, and the inner support fixture 2 is installed around the tower body of the tower body 3, which is used to support the workpiece 100 from the inside and maintain the inner roundness of the workpiece 100. The inner support fixture 2 includes a mounting frame 21, an electric push cylinder 22, a guide rail 23 and a tightening block 24. The mounting frame 21 is fixed to the side of the tower body 3 by welding or bolt connection. The electric push cylinder 22 and the guide rail 23 are installed on the end face of the mounting frame 21. The tightening block 24 is movably mounted on the guide rail 23 through a slider. The output end of the electric push cylinder 22 is connected to the tightening block 24, and the tightening block 24 is driven to perform reciprocating linear motion along the radial direction of the workpiece 100. Then the workpiece 100 is rounded from the inside to prevent the workpiece 100 from deforming during welding, resulting in welding dislocation. In this embodiment, there are four sets of internal support fixtures 2 on the same horizontal plane, and the angle between two adjacent sets of internal support fixtures 2 is 90 degrees. In the vertical direction, one set of internal support fixtures 2 is provided corresponding to each ring of workpieces 100 .

[0018] like Figure 1~2 As shown, it also includes a positioning tool 4, which includes a lifting platform 41 and a positioning frame 42. The lifting platform 41 is installed on the side of the tower body 3, and the positioning frame 42 is vertically installed on the base 1. A beam positioner 43 is provided on the side of the positioning frame 42 away from the tower body 3. Specifically, a plurality of vertical beams are installed on the inner side of the workpiece 100 as a skeleton support. In order to locate the position of the workpiece 100, we use the beam positioner 43 to cooperate with the beams to locate the workpiece 100 at a horizontal angle, so that the vertical welds on the upper and lower layers of the annular workpiece 100 are aligned. The lifting platform 41 can be lifted and lowered along the tower body 3, which is convenient for operators to operate the beam positioner 43.

[0019] like Figure 1 As shown, the outer edge of the expansion block 24 is set in an arc shape, and the outer edge of the expansion block 24 is provided with a notch 241 corresponding to the beam. Specifically, when the expansion block 24 expands the workpiece 100, the notch 241 faces the beam, which has an avoidance effect.

[0020] like Figure 1 As shown, the base 1 is in a collapsed shape, which is used to increase the seating area of ​​the base 1, reduce the pressure on the workshop floor, and avoid damaging the workshop floor.

[0021] like Figure 1 As shown, a turntable 11 is provided on the upper end surface of the base 1, and the tower body 3 is installed on the turntable 11. Specifically, it can be understood that during welding, the workpiece 100 is placed on the turntable 11, and the tower body 3 can drive the inner support tooling 2 to rotate synchronously with the workpiece 100, adjust the welding position of the workpiece 100, and adapt the welding robot to perform ring welding.

[0022] like Figure 1~2 As shown, a lifting lug 31 is provided on the top of the tower body 3, which is convenient for using lifting tools in the workshop to lift the tower body 3 on the base 1, thereby reducing the difficulty of assembly.

[0023] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. Pressure vessel short cylinder internal support type annular seam welding equipment, characterized by: It includes a base, an internal support tooling and a tower body, the tower body is installed on the base, and a plurality of internal support toolings are evenly arranged around the outside of the tower body. The internal support tooling includes a mounting frame, an electric push cylinder, a guide rail and a tightening block. The mounting frame is L-shaped, one end of the mounting frame is connected to the tower body, and the other end is kept horizontal. The electric push cylinder and the guide rail are installed side by side thereon, and the tightening block is movably installed on the guide rail. The output end of the electric push cylinder is connected to the tightening block to drive the tightening block to perform reciprocating linear motion.

2. The short-tube internal support type annular seam welding equipment for pressure vessels according to claim 1, characterized in that: It also includes a positioning tool, which includes a lifting platform and a positioning frame. The lifting platform is installed on the side of the tower body, and the positioning frame is vertically installed on the base. A beam positioner is arranged on the side of the positioning frame away from the tower body.

3. The short-tube internal support type annular seam welding equipment for pressure vessels according to claim 2, characterized in that: The outer edge of the expansion block is arranged in an arc shape, and a notch is arranged on the outer edge of the expansion block corresponding to the beam.

4. The short-tube internal support type annular seam welding equipment for pressure vessels according to claim 1, characterized in that: A turntable is arranged on the upper end surface of the base, and the tower body is installed on the turntable.

5. The short-tube internal support type annular seam welding equipment for pressure vessels according to claim 1, characterized in that: The number of internal support tooling on the same horizontal plane is four sets.

6. The short-tube internal support type annular seam welding equipment for pressure vessels according to claim 1, characterized in that: The top of the tower body is provided with a lifting lug.

Images