Power grid steam temperature and pressure reduction device, thermoelectric peak regulation system and pressure reduction regulation method

Abstract

The invention discloses a power grid steam temperature and pressure reduction device, a thermoelectric peak shaving system and a pressure reduction adjusting method.The power grid steam temperature and pressure reduction device comprises a main pipeline, a plurality of source steam pipelines, a plurality of variable throttling parts, a bypass pipeline and an adjusting valve, the main pipeline is provided with a first end and a second end, and the source steam pipelines are connected with the first end; the second end is suitable for being communicated with a user side, the variable throttling elements are arranged on the main pipeline and suitable for adjusting the flow area of the main pipeline, the bypass pipeline is provided with a third end and a fourth end, the third end and the fourth end are both communicated with the main pipeline, and the adjusting valve is arranged on the bypass pipeline. According to the power grid steam temperature and pressure reduction device, the through-flow area of the throttling component can be changed according to the source steam pressure and user requirements, the pressure adjusting capacity and the adjustable pressure range are improved, the steam supply pressure of industrial users can be guaranteed under the condition that the load of a power plant unit fluctuates in a large range, and the deep peak regulation capacity of the power plant is improved.

Description

technical field [0001] The invention relates to the technical field of thermoelectricity, in particular to a power grid steam temperature reduction and pressure reduction device, a thermoelectric peak regulation system using the power grid steam temperature reduction and pressure reduction device, and a pressure reduction adjustment method based on the power grid steam temperature reduction and pressure reduction device. Background technique [0002] The thermal power plant mainly uses the steam generated by burning coal to heat hot water for power generation, and uses the extraction steam that has done work in the steam turbine as the heat source of the heat network for heat supply. With the development of production technology and the growing demand of people for a better life, it is particularly important to ensure the supply of heat and steam. At the same time, affected by the demand for new energy consumption in the power grid, thermal power plants have the need to resp...

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Problems solved by technology

[0003] In the related technology, due to the small adjustable range of the temperature and pressure reduction device, the adaptability to the steam source pressure parameters is narrow, and when the extraction steam pressure from the steam turbine is low, the steam pressure after the temperature reduction and pressure reduction cannot meet the end user needs

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