A vertical gas-fired thermal oil boiler structure

Abstract

The invention relates to the technical field of boilers, and specifically to a vertical gas-fired thermal oil boiler structure, which can simplify installation and reduce boiler costs. The boiler structure comprises a furnace, a horizontal turning chamber, a descending flue and a tail flue. The furnace is formed by stacking and welding square coils from bottom to top, a burner is installed at the bottom of the furnace, each group of square coils is provided with an oil inlet and an oil outlet, the oil inlet of each group of square coils is connected to a corresponding convection heating surface, the oil outlet of each group of square coils is respectively connected to an independent connecting pipe, the connecting pipe is connected to a ceiling pipe inlet header, a convection heating surface and an evaporator are arranged in sequence from top to bottom in the descending flue, an economizer and an air preheater are installed in sequence from bottom to top in the tail flue, part of the pipes of the uppermost square coil close to the horizontal turning chamber are arranged in staggered rows from top to bottom in the horizontal direction, a flue gas gap is left between two adjacent layers of pipes, and a top seal is welded on the top of the uppermost square coil.

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