Marine Membrane Wall Oil Boiler

Abstract

The invention discloses a marine membrane wall oil-fired boiler, which comprises: a furnace, a lower cylinder, a middle cylinder and an upper cylinder arranged sequentially from bottom to top, the lower cylinder includes a flue gas passage and a water bag, and the flue gas passage is located at The inner side of the water bag and the upper and lower ends of the flue gas passage are respectively connected with the middle cylinder and the furnace. There are several heat exchange tubes arranged in the middle cylinder, and the upper and lower ends of the heat exchange tubes are respectively connected with the upper cylinder and the furnace. The water bag is connected, and the furnace wall of the furnace includes a number of rising pipes, the upper ends of the rising pipes are connected with the water bag, and the lower ends of the rising pipes are connected with the main pipe outside the bottom of the furnace. The upper end of the tube communicates with the lower end of the upper cylinder, and at least one heating pack is provided, and one heating pack communicates with at least one downcomer in series, and a heater is arranged inside the heating pack. The invention has the advantages that it can effectively prevent the boiler from being frozen or damaged by freezing in winter, and the start-up time of the boiler in winter is greatly shortened.

Description

technical field [0001] The invention relates to the field of marine boilers, in particular to a marine membrane wall oil fired boiler. Background technique [0002] The structure of the marine membrane wall oil-fired boiler mainly includes: the furnace, and the lower cylinder, the middle cylinder and the upper cylinder are arranged in sequence above the furnace. The lower cylinder includes the flue gas channel and the water bag, and the flue gas channel is located The inner side, and the upper and lower ends of the flue gas channel are respectively connected with the middle cylinder and the furnace. There are a number of heat exchange tubes in the middle cylinder, and the upper and lower ends of the heat exchange tubes are respectively connected with the upper cylinder and the water bag. The middle cylinder body is provided with a smoke outlet, and the furnace wall of the furnace includes several ascending pipes, the upper ends of the ascending pipes are connected with the w...

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Problems solved by technology

[0003] The defect of the traditional membrane wall oil-fired boiler is that in the winter when the temperature is low, when the boiler stops working, the upper cylinder, the middle cylinder and the lower cylinder are easy to freeze, which makes the boiler start again very slowly and consumes a lot of energy. In addition, when the temperature is low, the upper cylinder, the middle cylinder and the lower cylinder are easily damaged by freezing, resulting in extremely frequent maintenance and increasing the use cost of the boiler

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