A heat supply system combining steam compressor and high back pressure heat supply and its adjustment method

Abstract

Embodiments of the present invention provide a heat supply system and adjustment method combining steam compressor and high back pressure heat supply, including: a steam cooling device and a heating network return water heating device connected in parallel to the steam outlet end of the low-pressure cylinder of the steam turbine; The steam cooling device includes an air-cooled island with adjustable cooling capacity, the air-cooled island is connected to the steam outlet end of the low-pressure cylinder of the steam turbine through a first pipeline; the high back pressure heating network heater is connected to the steam outlet through a second pipeline The first pipeline is described; on the second pipeline, a regulating butterfly valve is set to exhaust steam to the high back pressure heating network heater to adjust the amount of exhaust steam entering the high back pressure heating network heater; the steam inlet of the steam compressor passes through the third The pipeline is connected to the first pipeline; a regulating butterfly valve is arranged on the third pipeline to discharge steam to the steam compressor to adjust the amount of exhaust steam entering the steam compressor. And in the heating season, when the host has a peak-shaving demand, it can additionally increase part of the heating capacity and peak-shaving capacity to achieve a certain thermoelectric decoupling capability.

Description

technical field [0001] The invention relates to the field of heating energy, in particular to a heating system and an adjustment method combining a steam compressor with high back pressure heating. Background technique [0002] With the rise of domestic energy costs and the improvement of environmental protection requirements, high-efficiency energy recovery equipment has become a new trend in recent years. And cogeneration has increasingly become an effective way for domestic thermal power generation enterprises to save energy and reduce consumption. In northern regions, the use of steam turbine extraction or exhaust steam for central heating is an important way to transform cogeneration of thermal power generation enterprises. How to effectively reduce the supply of heat and power? Thermal energy consumption and renovation cost are the current research focus of heating technology. [0003] In the process of realizing the present invention, the applicant found that there a...

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Problems solved by technology

[0005] The embodiment of the present invention provides a heating system and adjustment method combining steam compressor and high back pressure heating. The high back pressure exhausted stripping material of the compressor is used as the second-stage heating heating network circulating water, which is especially suitable for units with a small heating network circulating water volume. When a larger power steam compressor is configured, the unit’s peak-shaving capacity can be improved to achieve thermoelectric decoupling

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