Automatic heat delivery system of steam-steam heat exchanger

Abstract

The invention relates to an automatic heat delivery system of a steam-steam heat exchanger. The automatic heat delivery system comprises a steam-steam heat exchanger body, a hot side main pipeline anda cold side main pipeline, wherein the hot side main pipeline and the cold side main pipeline are connected to the steam-steam heat exchanger body; both the hot side main pipeline and the cold side main pipeline comprise inlet heating pipes and outlet heating pipes; the hot side inlet heating pipe and the hot side outlet heating pipe are connected with a hot side heat supply extraction opening and a heat supply header connector respectively; the cold side inlet heating pipe and the cold side outlet heating pipe are connected with a cold side heat supply extraction opening and the heat supplyheader connector respectively; electric regulating valves, pipeline wall temperature monitoring devices, pipeline drainage devices, pipeline pressure measuring devices and flow measuring devices are arranged on the hot side main pipeline and the cold side main pipeline; a hot side heating pipe bypass is arranged on the hot side inlet heating pipe; a hot side bypass control regulating valve is arranged on the hot side heating pipe bypass; a cold side heating pipe bypass is arranged on the cold side inlet heating pipe; and a cold side bypass control regulating valve is arranged on a cold side heating pipe bypass. Through adoption of the automatic heat delivery system of the steam-steam heat exchanger, automatic in service and out of service of a heat exchanger system can be achieved, and theworkload of operators is reduced.

Description

technical field [0001] The invention belongs to the technical field of combined heat and power generation, and in particular relates to an automatic heating and inputting system for a steam-steam heat exchanger, which is suitable for a thermal power plant for industrial steam heating. Background technique [0002] In the industrial production process, electrical energy and thermal energy are two important utilization methods. For the utilization of thermal energy, the industrial heating demand is different according to the process requirements, and the required heating steam parameters are also different. Among them, the heating with the pressure higher than 4.0MPa and the temperature higher than 400℃ is called high parameter heating. For high-parameter heating, due to the relatively high temperature and pressure, it is impossible to directly find a suitable steam extraction point from conventional thermal power plants. Generally, only steam with higher parameters (such as m...

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Problems solved by technology

For high-parameter heating, due to the relatively high temperature and pressure, it is impossible to directly find a suitable extraction point from a conventional thermal power plant. Generally, only higher-parameter steam (such as main steam) can be used to reduce temperature and depressurize heat supply. This often results in "high energy and low utilization", which reduces the efficiency of energy utilization.

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