Heat supply system combining steam compressor with high-back-pressure heat supply and adjusting method

Abstract

The embodiment of the invention provides a heat supply system combining a steam compressor with high-back-pressure heat supply and an adjusting method. The heat supply system comprises a steam coolingdevice and a heat supply network return water heating device which are connected to a steam outlet end of a low-pressure cylinder of a steam turbine in parallel. The steam cooling device comprises anair cooling island with adjustable cooling capacity, and the air cooling 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 heat supply network heater is connected to the first pipeline through a second pipeline; an adjusting butterfly valve for exhausting steam to the high-back-pressure heat supply network heater is arranged on the second pipeline and used for adjusting the amount of dead steam entering the high-back-pressure heat supply network heater; a steam inlet of the steam compressor is connected to the first pipeline through a third pipeline; and an adjusting butterfly valve for exhausting steam to the steam compressor is arranged on the third pipeline and is used for adjusting the amountof dead steam entering the steam compressor. In addition, when a main machine has the peak shaving requirement in the heating season, most of the heat supply capacity and the peak shaving capacity canbe additionally increased, and certain thermoelectric decoupling capacity is achieved.

Description

technical field [0001] The invention relates to the field of heat supply energy, in particular to a heat supply system and an adjustment method combining steam compressor and high back pressure heat supply. 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. Cogeneration of heat and power has increasingly become an effective way for domestic thermal power enterprises to save energy and reduce consumption. In the northern region, using steam turbine extraction or exhaust steam for central Heat energy consumption and retrofit cost are the focus of research on current heating technology. [0003] In the process of realizing the present invention, the applicant found that at least the following problems existed in the prior art: [0004] At present, among the most conventional heating technologies in China, the mid-row...

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Problems solved by technology

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

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