Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover

A technology for pressure vessels and manufacturing methods, which is applied in the direction of pressure vessels, fixed-capacity gas storage tanks, mechanical equipment, etc., can solve the problems of poor stress conditions, poor economic benefits, and high pressure parameters of flat-plate welded structures, so as to improve the utilization rate and Economic benefit, low utilization rate, and the effect of manufacturing process optimization

Active Publication Date: 2011-08-17
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the in-factory hydrostatic test of traditional domestic and foreign boilers and pressure vessel products, the hydraulic pressure seals for the welding of large-diameter pipes with welding grooves on the construction site are all Temporary pressure components for welding are generally processed by gas-cutting steel plates.

Method used

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  • Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover
  • Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover
  • Reusable welded hydraulic cover of boiler and pressure vessel and manufacturing method of reusable welded hydraulic cover

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] A welded water pressure cover for boilers and pressure vessels that can be used multiple times. The composition includes: cover 1, with more than one water pressure margin 2 left at the lower end of the cover, and the cover is connected to a transition pipe , The cover is connected to the flange 3, and a central hole 4 is opened on the cover.

Example Embodiment

[0029] Example 2:

[0030] Said boiler and pressure vessel that can be used for multiple times are welded with water pressure caps, and the caps may be spherical caps 6, oval caps 7, flat bottom caps 8, tube sheet caps 9, and flat caps 10 or flange cover 11.

Example Embodiment

[0031] Example 3:

[0032] A manufacturing process for welding water pressure closures of boilers and pressure vessels that can be used multiple times. The water pressure closures are manufactured after model selection and strength calculation. The hydraulic cover has a central hole to connect with flanges or pipe joints; the design reserves the welding groove of the cover and the total amount of process allowance for subsequent processing after multiple hydraulic pressures L=h×n; before the hydraulic test, The hydraulic cover is connected with the product's large nozzle through a weld. After each hydraulic test, cut the cover or transition nozzle within the hydraulic margin of the large nozzle without damaging the base material. Before using it again, press the machining allowance h again To process the welding groove of the cover, the cover can also be cut as required under special circumstances, and the h value can be adjusted accordingly; according to the design strength and ...

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PUM

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Abstract

The invention discloses a reusable welded hydraulic cover of a boiler and a pressure vessel and a manufacturing method of the reusable welded hydraulic cover. In a hydraulic test in the conventional product factory for the boiler and the pressure vessel, the hydraulic cover which is formed by assembled welding of large-diameter welding pipes of a welding groove on a construction site serves as a welding temporary pressed element; the hydraulic cover is generally formed by oxygen-acetylene cutting of a steel plate; the stressed condition of a flat welding structure of the steel plate is poor; and the steel plate is thick and heavy and usually disposable so as to cause great waste. The welded hydraulic cover of the boiler and the pressure vessel comprises a cover (1), wherein hydraulic allowance (2) is formed at the lower end of the cover. The invention is applied to manufacturing of the boiler and the pressure vessel.

Description

Technical field: [0001] The invention belongs to the field of manufacturing boilers and pressure vessels; in particular, it relates to a welded water pressure sealing cover for boilers and pressure vessels that can be used repeatedly and a manufacturing method. Background technique: [0002] In traditional domestic and foreign boiler and pressure vessel products in-factory hydrostatic testing, the large-diameter connecting pipes at the welding grooves on the construction site are used as temporary pressure components for welding, and are generally gas-cut from steel plates. Material processing, its plate welded structure has poor stress condition, and the steel plate is thick and heavy, which is usually used for one time. Especially for caps with high pressure parameters, large sizes, and large batches in mass production, there are problems of repeated manufacturing, large material consumption, and poor economic benefits. Invention content: [0003] The purpose of the inv...

Claims

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Application Information

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IPC IPC(8): F16J13/00F16J13/02B23P15/00
Inventor 袁承春
Owner HARBIN BOILER
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