Gas-steam combined cycle heat-power cogeneration unit

Abstract

Embodiments of the invention disclose a gas-steam combined cycle heat-power cogeneration unit comprising a first gas turbine, a second gas turbine, a first waste heat boiler, a second waste heat boiler, and a steam turbine. The first and second gas turbines are axially arranged in parallel. The first waste heat boiler is connected with the first gas turbine. The second waste heat boiler is connected with the second gas turbine. The steam turbine is perpendicular to the axial directions of the first and second gas turbines, disposed between the first and second gas turbines, and connected with the first and second waste heat boilers through a thermal system pipeline. The first gas turbine, the second gas turbine and the steam turbine are all arranged on a same operating platform. The gas turbines and the steam turbine are arranged on the same operating platform, so that system operation and maintenance is facilitated, applicability to production and operation is fully satisfied, workshops are cut through, a crane is shared and expansion of the workshops is facilitated.

Description

technical field [0001] The invention relates to the field of thermoelectricity, in particular to a gas-steam combined cycle heat and power cogeneration unit. Background technique [0002] With the development of my country's economic construction, in the field of thermal power, gas-steam combined cycle heat and power cogeneration units are gradually replacing coal-fired power supply units due to their high power supply efficiency, fast operation start and stop, short construction period, less land occupation, and environmental protection. Thermal units are widely used. [0003] Generally, gas-steam combined cycle units are divided into single-shaft configuration and multi-shaft configuration according to whether the gas turbine and steam turbine are connected in series in the same shaft system when arranged. One-to-one" single-axis configuration, "one-to-one" multi-axis configuration and "two-to-one" multi-axis configuration. For conventional multi-shaft gas-steam combined ...

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Problems solved by technology

[0004] The embodiment of the present invention provides a gas-steam combined cycle heat and power cogeneration unit, which solves the problem of inconvenient operation and maintenance in the traditional layout mode, and needs separate driving when overhauling, which cannot meet the applicability of production and operation. At the same time, the occupied area Big, not conducive to the expansion of the plant

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