Element and method for repairing boiler crack

A crack and component technology, applied in the field of boiler maintenance, can solve problems such as difficulty in guaranteeing repair quality, and achieve remarkable technological advancement, reliable working life, and scientific and reasonable results.

Inactive Publication Date: 2017-06-09
SHANGHAI DAISHAN ELECTRIC POWER INSTALLATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the repair quality is difficult to guarantee in the repair of boiler cracks in power plants at present, and provide a component and method for repairing boiler cracks that are simple and scientific, easy to implement and controllable in quality

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  • Element and method for repairing boiler crack
  • Element and method for repairing boiler crack

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and typical embodiments.

[0018] exist figure 1 Among them, the component for repairing boiler cracks of the present invention is served by the repair bolt 1 with the functions of self-tapping entry, backstop limit, multiple clamping limit, and traction of the surrounding wall. The main body of the repair bolt 1 is composed of a bolt rod 2 and a bolt head. 3, wherein: the bolt shank 2 is provided with an inverted tooth-shaped anti-retraction thread 21; the bolt head 3 includes a limit shoulder 31 provided with at least two rings of split-shaped locking teeth 311 and The control screw head 32 of the narrow neck 321 will be automatically broken off when the upper belt exceeds the limit.

[0019] exist figure 1 and figure 2 Among them, a method for repairing boiler cracks in the present invention is characterized in that it adopts the function of self-tapping entry, sto...

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Abstract

The invention relates to a component and method for repairing boiler cracks. The component has the functions of self-tapping entry, stop-retreat limit and multiple clamping and traction limit surrounding walls. And the repair bolt composed of a limit card shoulder with at least two rings of split-shaped teeth and a bolt head with a control screw head that will automatically break off the thin neck when it exceeds the limit is used. When in use, the repair bolt is superimposed Compared with the existing method of repairing boiler cracks by electric welding, the repairing of cracks by alternating dislocation seams has obvious advantages such as scientific and reasonable methods, convenient construction, good repairing effect, and low cost. practicality.

Description

technical field [0001] The invention relates to the technical field of boiler maintenance, in particular to a component and method for repairing boiler cracks. Background technique [0002] The well-known boilers used in thermal power plants all use coal as fuel, and use the metal water vapor pipes that absorb heat in the combustion chamber to supply heat to the outside. Therefore, many metal water vapor pipes are installed on the furnace roof and furnace wall of the furnace body. . Since these metal water vapor pipes will continue to shift relative to each other due to thermal expansion and contraction during the working process of the boiler, there is a gap between the metal water vapor pipes and the hole wall when they are installed. In order to prevent the high-temperature flue gas with soot inside the boiler from spreading outwards through the gap under the influence of the pressure difference between the inside and outside of the boiler, causing adverse consequences s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B25/04B23P6/04
CPCF16B25/0089B23P6/04
Inventor 边小勇滕松韩系祥郑新宇
Owner SHANGHAI DAISHAN ELECTRIC POWER INSTALLATION ENG
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