Gas turbine waste heat boiler

Abstract

The invention discloses a gas turbine waste heat boiler. The gas turbine waste heat boiler comprises a boiler shell defined by a top plate, a bottom plate and a side plate; a plurality of rows of heatexchanging pipe bundles sequentially arranged at intervals in the flue gas flowing direction are arranged in the boiler shell to form a heat exchanging pipe bundle set; each row of heat exchanging pipe bundles comprise an upper header, a lower header and heat exchanging pipes; the left end and the right end of the top of the upper header of each row of heat exchanging pipe bundles are each provided with a long threaded hoisting rod; the upper end of each long threaded hoisting rod movably and upwardly penetrates the top plate and then is connected with a fastening nut; each row of heat exchanging pipe bundles are matched with the corresponding long threaded hoisting rods through the corresponding fastening nuts to be movably hoisted and hung on the top plate; an overhauling space is reserved between the heat exchanging pipe bundle set and the top plate as well as between the heat exchanging pipe bundle set and the bottom plate; a first man hole is formed in the top plate of the boilershell; and a second man hole is formed in the lower portion of the side plate of the boiler shell. The gas turbine waste heat boiler has the beneficial effects that overhauling operation is convenient and time consumed for overhauling is short.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a gas turbine waste heat boiler. Background technique [0002] Gas turbine waste heat boiler is a kind of waste heat boiler commonly used at present, which is mainly used for waste heat recovery of high temperature flue gas with flue gas temperature of 500 ℃ ~ 600 ℃. The structure of the currently used gas turbine waste heat boiler is: a boiler shell surrounded by a top plate, a bottom plate and a side plate, and a heat exchange tube bundle group is fixed inside the boiler shell. The gas flow direction is composed of heat exchange tube bundles arranged at intervals in sequence, and each row of heat exchange tube bundles includes: an upper header and a lower header fixed on the boiler shell, and a number of heat exchange tubes connecting the upper header and the lower header. The disadvantages of the currently used gas turbine waste heat boilers are: during the use of the gas tur...

AI Technical Summary

Problems solved by technology

The disadvantages of the currently used gas turbine waste heat boilers are: during the use of the gas turbine waste heat boilers, it is unavoidable Leakage will occur. When the middle heat exchange tube bundle in the heat exchange tube bundle group leaks, the tube bundle can only be cut row by row from the outermost heat exchange tube bundle in the heat exchange tube bundle group until it reaches the leakage of the middle heat exchange tube bundle. After repairing the leak point or replacing the pipes, the cut pipe bundles are restored row by row from the middle to the outside. The whole maintenance process takes at least 3 days. The maintenance operation is inconvenient and time-consuming, which greatly affects the work efficiency

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