Two-stage adjusting system suitable for intermediate adjusting valve to participate in adjusting and lifting industrial steam supply parameters

Abstract

The invention discloses a two-stage adjusting system suitable for an intermediate adjusting valve to participate in adjusting and lifting industrial steam supply parameters. A boiler reheating steam pipeline is divided into two paths after passing through an adjusting butterfly valve, wherein one path communicates with a first inlet of an intermediate-pressure cylinder through a first intermediate-pressure main steam valve and a first intermediate-pressure adjusting valve; and the other path communicates with a second inlet of the intermediate-pressure cylinder through a second intermediate-pressure main steam valve and a second intermediate-pressure adjusting valve. A boiler main steam pipeline communicates with an inlet of a high-pressure cylinder, a steam exhaust port of the high-pressure cylinder communicates with a cold recycling pipeline, and a steam extraction port of the high-pressure cylinder communicates with a steam extraction pipeline. The system can effectively solve the problems of vibration and sudden closing of the intermediate-pressure valve.

Description

technical field [0001] The invention belongs to the technical field of heat supply for thermal power plants, and relates to a two-stage regulating system suitable for a central regulating valve to participate in regulating and improving industrial steam supply parameters. Background technique [0002] In recent years, with the high price of coal in recent years, and new energy sources such as nuclear power, solar energy, wind power, and hydropower occupying the living space of thermal power, the power generation business of most thermal power units has become more and more difficult, facing an extremely severe operating situation, and the thermal power industry is losing money. The phenomenon is common. As for cogeneration companies, most of them are still able to maintain profitability, and their business scale continues to grow. Under such circumstances, many large-scale thermal power units carry out heat supply transformation on the basis of not increasing the coal consu...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a two-stage adjustment system suitable for the middle adjustment valve to participate in the adjustment and improvement of industrial steam supply parameters. This system can effectively solve the problem of medium pressure valve vibration and sudden closing

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