Gas and steam combined cycle distributed energy station arrangement structure

Abstract

The invention discloses a gas and steam combined cycle distributed energy station arrangement structure which comprises a main power house, steam turbine generating sets, waste heat utilization devices and gas turbine generating sets. The main power house comprises an auxiliary power house, and a steam engine room adjacent to the auxiliary power house, the auxiliary power house is arranged at one side of the steam engine room; the steam turbine generating sets are arranged in the steam engine room; the waste heat utilization devices are closely adjacent to the side, away from the auxiliary power house, of the steam engine room, and the waste heat utilization devices are connected with the steam turbine generating sets through pipelines; and the gas turbine generating sets are arranged at the air inlet ends of the waste heat utilization devices, and connected with the waste heat utilization devices through pipelines. Thus, the situation that steam pipelines, water supply pipelines, cooling water pipelines and other pipelines between the waste heat utilization devices (boilers), gas turbines and the main power house stretch across the auxiliary power house is avoided, accordingly the length of the pipelines and cables is shortened, and the pipeline pressure drop degree is lowered, building investment is lowered, and the economic efficiency is improved; and in addition, the space occupied in the auxiliary power house can be reduced, and the space utility rate of the auxiliary power house is increased.

Description

technical field [0001] The invention relates to the technical field of power plant design, in particular to an arrangement structure of a gas-steam combined cycle distributed energy station. Background technique [0002] Energy shortage and environmental degradation have gradually become increasingly serious global problems. The gas-steam combined cycle distributed energy station supplies electricity, heat, and cold at the same time, and uses cascaded energy. It has the characteristics of high efficiency, energy saving, consumption reduction, and flexible operation. At the same time, it can also improve the power structure, cut peaks and fill valleys, and improve energy supply security. It is the main energy supply method that conforms to the trend of national energy development. [0003] For the gas-steam combined cycle distributed energy station, the main plant is one of the core buildings, where most of the host equipment, main thermal system process pipelines, cables, a...

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Problems solved by technology

[0005] However, the auxiliary plant is arranged between the main span and the boiler, which will cause the steam pipes, feed water, cooling water and other pipes between the boiler, gas turbine and the main plant to cross the auxiliary span, increasing the length of the pipeline, high initial investment, and pressure on the pipeline. In addition, the pipes crossing the auxiliary span will also occupy the layout space of the auxiliary plant, reducing the effective utilization of the space of the auxiliary plant; at the same time, it also increases the heat engine piping layout and Electrical and control equipment, crossing and mutual influence of cables, poor safety; generator outlet of steam turbine generator set is long, and investment is high

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