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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. The flat welded structure is in poor stress condition and the steel plates are thick and heavy, so they are 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.

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
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Effect test

Embodiment 1

[0028] A welded water pressure cover for boilers and pressure vessels that can be used multiple times. Its composition includes: a cover 1, the lower end of the cover has more than one hydraulic pressure margin 2, 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.

Embodiment 2

[0030] The welded water pressure cover of the boiler and pressure vessel that can be used multiple times, the cover can be a spherical cover 6, an oval cover 7, a flat bottom cover 8, a tube sheet cover 9, a flat cover 10 or flange cover 11.

Embodiment 3

[0032] The invention discloses a manufacturing process method for welded hydraulic sealing covers of boilers and pressure vessels which can be used repeatedly. The hydraulic sealing covers are manufactured after type selection and strength calculation. The hydraulic sealing cover has a central hole to connect with the flange or pipe joint; the welding groove of the sealing cover is reserved in the design and the total process allowance for processing after multiple hydraulic pressures is L=h×n; before the hydraulic pressure test, The hydraulic cover is connected to the large connecting pipe of the product by welding. After each hydraulic test, the sealing cover or the transitional connecting pipe shall be cut within the hydraulic pressure allowance of the large connecting pipe, and the base material shall not be damaged. Process the welding groove of the cover. In special cases, the cover can also be cut according to the requirements, and the h value should be adjusted accordin...

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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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