High temperature three-dimensional expansion joint
An expansion joint, three-dimensional technology, applied in the field of electric power, can solve the problems of high price, high installation accuracy, long order and production cycle, etc., and achieve the effects of low cost, easy processing and simple structure
Active Publication Date: 2017-08-29
ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER
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Problems solved by technology
At present, the expansion joints used in power plants have a small ability to absorb expansion, require relatively high installation accuracy, are expensive, and have a long order and production cycle, so they are not suitable for emergency repairs and overhauls of boilers.
Method used
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[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] An embodiment of the present invention provides a high-temperature three-dimensional expansion joint, including: an expansion chamber and an annular steel plate end cover;
[0023] The expansion chamber is arranged between the slag discharge pipe of the furnace and the slag feed pipe of the slag cooler;
[0024] The annular steel plate end cover is covered above...
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The invention discloses a high-temperature three-dimensional expansion joint. The high-temperature three-dimensional expansion joint comprises an expansion room and an annular steel plate end cover. The expansion room is arranged between a hearth slag discharging pipe and a slag cooler slag inlet pipe. The annular steel plate end cover is arranged above the expansion room in a covering manner. The area of the annular steel plate end cover is larger than the area of the cross section of the expansion room. The hearth slag discharging pipe stretches into the expansion room through the inner circle of the annular steel plate end cover, and the hearth slag discharging pipe can conduct three-dimensional free movement in the expansion room in the vertical direction and the horizontal direction. According to the high-temperature three-dimensional expansion joint, expansion in the vertical and horizontal three-dimensional directions can be absorbed, the structure is simple, machining is easy, and cost is low.
Description
technical field [0001] The invention relates to the field of electric power, in particular to a high-temperature three-dimensional expansion joint. Background technique [0002] In a circulating fluidized bed boiler, the three-dimensional expansion and contraction of the water-cooled wall in the up, down, left, and front directions occurs due to the thermal expansion and contraction effect of the boiler heating and cooling. The furnace slag discharge pipe is fixed on the water cooling wall, so when the water cooling wall expands, it also expands accordingly. The slag cooler has its own independent platform, and its slag-feeding end is a fixed end without expansion. For this reason, expansion joints must be provided when connecting the expansion furnace slag discharge pipe and the non-expansion slag cooler slag inlet pipe. At present, the expansion joints used in power plants have a small ability to absorb expansion, require relatively high installation accuracy, are expens...
Claims
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IPC IPC(8): F23C10/24
Inventor 刘众元刘建华李凯勇邢秀峰武晓俊张晓东潘燕龙
Owner ELECTRIC POWER RES INST STATE GRID SHANXI ELECTRIC POWER