Multi-stage boiler

Abstract

The invention discloses a multi-stage boiler. A plurality of mutually-spaced lower water tanks are arranged at the lower end face of a bottom plate of a heating bin, a plurality of mutually-spaced upper water tanks are arranged on the upper end face of a top plate of the heating bin, each upper water tank is in communication with the corresponding lower water tank below the upper water tank through one of a plurality of first communication pipes, each upper water tank is in communication with the lower water tank before the corresponding lower water tank through one of a plurality of second communication pipes so that multi-stage heating on water in the boiler can be realized; certain water tanks close to a heating device are main steam generating water tanks, water entering from a water inlet pipe of the lower water tank at the rearmost end can utilize heat in the heating bin, and the water is heated while entering, so that the heat is further utilized; and along with the forward conveying step by step, the temperature of the inlet water is higher and higher. When the inlet water enters the certain water tanks close to the heating device, the steam generation rate of the steam boiler is not influenced by the too low inlet water temperature, the steam generation rate of the boiler is stable, the efficiency is high, the thermal efficiency is improved, and the energy consumptionis reduced.

Description

technical field

[0001] The invention relates to the technical field of boilers, in particular to a multistage boiler. Background technique

[0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. A steam boiler refers to an industrial boiler that heats water to a certain parameter and produces high-temperature steam. The steam boiler needs to consume a lot of water during the working process, so it needs to continuously add water to the boiler. When the steam boiler is in use, it needs to continuousl...

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