A boiler economizer

Abstract

The invention relates to a boiler coal economizer and belongs to the technical field of boiler corollary equipment. The boiler coal economizer comprises guard plates, supporting beams, pipe clamps and a coiled pipe system. A flue is formed by the guard plates in an enclosed mode, and the coiled pipe system is mounted in the flue. The supporting beams are horizontally erected on the guard plates. The pipe clamps are vertically fixed to the supporting beams. The coiled pipe system comprises a set of coiled pipe bundles which are disposed at the same height and are arranged at intervals. The coiled pipe bundles are fixed by the pipe clamps. The coiled pipe system is provided with locating plates. The locating plates are arranged adjacent to the pipe clamps. Connecting round steel penetrates through the locating plates. The coal economizer is simple in structure and convenient to mount and repair; not only is the rigidity of the whole pipe system guaranteed, but also free expansion of the coiled pipe system is ensured; besides, heat transfer is not affected, and the problem that the pipe bundles of the coal economizer are too high and consequently instability and deformation are caused easily is solved.

Description

technical field [0001] The invention belongs to the technical field of boiler supporting equipment, and in particular relates to a boiler economizer. Background technique [0002] The economizer is installed in the tail flue of the boiler to use the heat of the low-temperature flue gas at the tail of the boiler to heat the boiler feed water. Water flows from bottom to top in the economizer, and flue gas washes the serpentine pipe system from top to bottom to form convective heat transfer, and transfer the heat of the flue gas to the water in the serpentine pipe system. Because it absorbs the heat of low-temperature flue gas, reduces the exhaust temperature of flue gas, saves energy and improves efficiency, so it is called an economizer. [0003] The supporting method of the serpentine piping system of the economizer generally adopts the support type, and the serpentine piping system is supported on the support beam through pipe clamps, but this type requires the pipe clamps...

AI Technical Summary

Problems solved by technology

When the height of the tube bundle is too high, the first-stage economizer can only be disassembled into two stages, and a corresponding maintenance space must be left between the two-stage tube bundles, thus greatly increasing the overall height of the economizer, making the boiler work in a limited It is difficult to arrange enough economizers in the space

Images