Auxiliary machine integrated power source system with cylinder switching function for supplying heat

Abstract

The invention discloses an auxiliary machine integrated power source system with a cylinder switching function for supplying heat. One path of steam output by a high-pressure cylinder leads to a low-pressure cylinder, and the other path is led to a hot-net heater; each steam pipeline is provided with a valve, and the connecting and the disconnecting of the steam pipelines are controlled; the high-pressure cylinder and the low-pressure cylinder are the same power input shaft, the terminal of the power input shaft is connected with a generator, the generator is driven, and the generator drives aload to run; a low-pressure cylinder zero-output technology is applied when heat supply is carried out in winter, the rest of steam both enters the hot-net heater to realize external heat supply; a pure-condensation working condition is maintained to run in a non-heat-supply season, and the high-pressure cylinder and the low-pressure cylinder jointly drive the generator to generate electricity; during heat supply conversion, only the valves on different steam pipelines need to be adjusted, the cylinder switching function can be realized; the reaction is rapid, and the system is simple; the steam exhaust of a small steam turbine in winter is almost all used for the heat supply, the loss of a source is avoided, and the heat economical efficiency is high.

Description

【Technical field】 [0001] The invention belongs to the field of energy saving and consumption reduction of coal-fired units, and specifically relates to an auxiliary machine unified mobilization power source system with a cylinder cutting function and heat supply. 【Background technique】 [0002] When designing a thermal power plant, the selection of auxiliary equipment is often selected according to the maximum load with a certain margin. In actual operation, due to deviation from the design operating point, the operating efficiency of auxiliary machines is generally lower than the design value, resulting in power loss, especially when the thermal power unit participates in peak regulation, the power loss due to the low efficiency of auxiliary machines is serious. Therefore, when conditions permit, some auxiliary machines operate with speed regulation to reduce throttling losses and improve their operating efficiency, which can often produce better energy-saving effects. [...

AI Technical Summary

Problems solved by technology

However, it is very difficult to drive all the auxiliary machines of the power plant in the form of auxiliary machine dispatching power source.

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