Peak regulation system with zero output of low-pressure cylinder and coupling of heat storage tank and low-pressure heater

Abstract

The invention discloses a peak regulation system with zero output of a low-pressure cylinder and coupling of a heat storage tank and a low-pressure heater, and belongs to the technical field of power generation equipment. The peak regulation system comprises a boiler system, a high-pressure cylinder system, a medium-pressure cylinder system, a low-pressure cylinder system, a high-pressure heater system, a deoxidizing system, a low-pressure heater system, a condenser system, a heat supply network heater system and a heat storage tank system. According to the peak regulation system with zero output of the low-pressure cylinder and coupling of the heat storage tank and the low-pressure heater, innovation is carried out on the basis of a combined heat and power generation unit system which is subjected to low-pressure cylinder zero output transformation and provided with the heat storage tank, so that the low-pressure cylinder is in zero output and the heat storage tank can assist a thermal power generating unit to participate in deep peak regulation in the heating period and the non-heating period; and on one hand, the problems of impact of zero output of the low-pressure cylinder in the heating period on a heat supply network heater and excessive heat supply steam are solved, and on the other hand, the problems of zero output of the low-pressure cylinder in the non-heating period and shutdown of the heat storage tank and incapability of participating in deep peak regulation are solved.

Description

technical field [0001] The invention belongs to the technical field of power generation equipment, and in particular relates to a peak-shaving system coupled with zero output of a low-pressure cylinder of a cogeneration unit, a heat storage tank and a low-pressure heater. Background technique [0002] In recent years, zero output of the low-pressure cylinder of cogeneration units or the configuration of heat storage tanks are widely used transformation measures for cogeneration units in order to participate in auxiliary peak regulation during the winter heating period. During the winter heating period, when the power grid load is low, the cogeneration unit with zero output of the low-pressure cylinder or the cogeneration unit equipped with a heat storage tank can reduce the on-grid electricity and meet the peak-shaving demand of the power grid under the premise of ensuring the heating demand. During the heating period, when the zero output of the low-pressure cylinder of the...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a peak regulation system with zero output of the low pressure cylinder, heat storage tank and low pressure heater to solve the impact of the zero output of the low pressure cylinder on the heating network heater and heat supply on the one hand. The problem of excess steam, on the other hand, solves the problem of zero output of the low-pressure cylinder during the non-heating period, and the failure of the heat storage tank to participate in deep peak regulation when the heat storage tank is out of service

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