A gas-fired hot water boiler air circulation energy-saving system

Abstract

The invention relates to a gas-fired hot water boiler air circulation energy saving system which comprises a boiler body, two burners, a flue, a chimney, energy savers, a water-cooling type condenser, a secondary air type condenser and a primary air type condenser, wherein the two burners arranged at intervals in an up-and-down manner are mounted at one end of the boiler body; a flue gas outlet is formed at the other end of the boiler body, and is in sealing connection with the flue; an outlet of the flue is connected to the upright chimney; the energy savers sequentially arranged in a two-stage manner are mounted in the flue between the boiler body and the chimney; the chimney is provided with the water-cooling type condenser, the secondary air type condenser and the primary air type condenser from bottom up sequentially; an air blower is communicated with and mounted at one side of the lower part of the chimney; and an exhaust outlet of the air blower is communicated with air inlets of the burners of the boiler body through sealed pipelines. The gas-fired hot water boiler air circulation energy saving system operates stably, is safe and reliable, has strong output, is high in efficiency and low in exhaust gas temperature, reaches flue gas emission indexes, and meets the requirements of market development better.

Description

technical field [0001] The invention belongs to equipment in the field of urban central heating, in particular to an air circulation energy-saving system for a gas-fired hot water boiler. Background technique [0002] This equipment belongs to the main equipment in the field of large-scale central heating in cities. It is aimed at the air circulation energy-saving system of gas-fired hot water boilers used in large-scale urban heating coal-to-gas projects in the field of environmental protection and energy conservation advocated by the state. With the continuous improvement of domestic living standards, the society has gradually stricted environmental protection requirements around the living area. In the past, large-scale commercial housing and residential quarters generally used coal-fired hot water heating boilers, which caused serious dust and poisonous pollution to the surrounding living areas. Smoke pollution, cities are often shrouded in smog and dust. In order to im...

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Problems solved by technology

[0003] After nearly 3-4 years of application, domestic large-scale gas-fired hot water heating boilers have initially occupied the domestic market, but the larger gas-fired boilers are still in the stage of research and exploration and summary of operating experience, lack of relevant design experience, with the national standards for In an environment where boiler thermal efficiency and flue gas emission NOx values ​​are constantly demanding, the original gas-fired hot water boiler air circulation energy-saving system has a thermal efficiency of 95% and NOx of 120-150mg / Nm3 is far from meeting the standards and market update speed, so , achieving higher breakthroughs in thermal efficiency, flue gas NOx index, exhaust gas temperature, etc. has become the main research direction of large gas-fired hot water heating boilers

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