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Connecting structure of skirt seat and bottom sealing head

A technology of connecting structure and bottom sealing head, which is applied in gas/liquid distribution and storage, pressure vessel, fixed-capacity gas storage tank, etc. The effect of saving welding consumables and manufacturing cycle, compact structure, reducing welding and non-destructive testing work

Inactive Publication Date: 2019-07-02
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a connection structure between the skirt seat and the bottom head. The invention has a compact structure, a small weld section size, and the required weld metal is only about 30% of the traditional surfacing welding type, and the manufacturing method is simpler. The manufacturing cycle is short, and the remaining materials can be used, the cost is low and the quality is reliable. Compared with the existing technology, the disadvantages of complex manufacturing process, high consumption of welding materials, large welding workload, long cycle and high cost have been solved to a large extent.

Method used

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  • Connecting structure of skirt seat and bottom sealing head
  • Connecting structure of skirt seat and bottom sealing head
  • Connecting structure of skirt seat and bottom sealing head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The connection structure between the skirt seat and the bottom head, the connecting member (2) is a rotary structure made of the same material as the head, and its cross-sectional shape consists of an upper bevel (8), a lower bevel (9), an outer bevel (10 ), the outer straight edge (11), the circumferential groove (12), the straight section (13), the fillet (14), and the bottom plane (15) are integrated into one, as attached figure 2 shown. It can be machined from the end stock (7) of the head, as shown in the attached image 3 shown.

Embodiment 2

[0029] According to the connection structure between the skirt seat and the bottom head described in Example 1, blunt edges can be processed at the joints of the upper bevel (8) and the lower bevel (9) as required, and the bottom of the connecting member (2) and the skirt body / The transition section (3) is provided with a straight section (13) at the junction, on which a circumferential bevel (12) is processed. There is a rounded corner (14) transition between the straight section (13) and the bottom plane (15). The outer straight edge (11) of the component (2) is consistent with the outer diameter of the skirt body / transition section (3), and the outer straight edge (11) is connected to the upper bevel (8) through the outer bevel (10), and the outer bevel ( 10) The angle with the outer straight edge (11) is generally 10-25° according to the actual shape.

Embodiment 3

[0031] First turn the head (5) upside down, put the connecting member (2) on the head (5), and then weld the lower weld (4). Since the connecting member (2) has a compact structure, there is enough space for welding and testing. Space to achieve, is conducive to ensuring the quality of welding. After the lower welding seam (4) is completed, the head (5) is turned over, and the upper welding seam (1) is welded after cleaning the root. After the welding is completed, the corresponding non-destructive testing is carried out.

[0032] After the welding of the connecting member (2) and the head (5) is completed and passed the inspection, the welding and non-destructive testing of the connecting member (2) and the skirt cylinder / transition section (3) are carried out.

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Abstract

The invention relates to a connecting structure of a skirt seat and a bottom sealing head. The connecting structure of the skirt seat and the bottom sealing head comprises an upper welding seam (1), aconnecting member (2), a skirt seat cylinder / transition section (3), a lower welding seam (4), the sealing head (5), a circumferential welding seam (6) and sealing head end excess materials (7). Theconnecting structure is compact in structure and small in welding seam cross-section size, required weld metal is only about 30% of a traditional bead welding type, the manufacturing method is simpler, the manufacturing period is short, processing excess materials can be utilized, the cost is low, the quality is reliable, and compared with the prior art, the defects of complex manufacturing process, more welding materials consumption, large welding workload, long period, high cost and the like are overcome to a great extent.

Description

[0001] Technical field: [0002] The invention relates to a connection structure between a skirt seat and a bottom head. [0003] Background technique: [0004] With the continuous progress of my country's chemical technology, the pressure equipment is also developing towards large-scale. Higher temperature, higher pressure, and larger diameter make the wall thickness and weight of the pressure vessel larger, which affects the skirt of the vessel. The reliability of the connection between the seat and the bottom head puts forward higher requirements. In the tower standard, for more important thick-walled vessels, it is recommended to use h-shaped forgings or surfacing welding for the connection between the skirt and the head. But these two types all have certain disadvantages. [0005] For the h-shaped forging type. This structure is widely used in hydrogenation reactors. It uses ring forgings to process h-shaped connectors. The upper section is butt-welded with the cylinder,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/00
CPCF17C1/00
Inventor 唐卉李明王非李召生洪超高嘉楠高宁宁聂晶张东
Owner HARBIN BOILER
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