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Heat supplying system of fuel gas-steam combined circulation heat power plant

A heating system and combined cycle technology, which is applied in the direction of steam central heating system, heating system, household heating, etc., can solve problems such as mismatch of heat and electric load, and can meet changes, flexibly switch, and realize thermal electrolysis. coupling effect

Active Publication Date: 2019-06-28
TAIYUAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide a heat supply system of a gas-steam combined cycle thermal power plant, to solve the problem of thermal and electric load mismatch caused by changes in heating load, and to realize thermoelectric decoupling

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specific Embodiment approach

[0019] Such as figure 1 Shown, the specific embodiment of the present invention is as follows:

[0020]The invention includes a high-pressure feed water pump 1, a medium-pressure feed water pump 2, a low-pressure steam drum 3, a medium-pressure steam drum 4, a high-pressure steam drum 5, a low-pressure economizer 6, a low-pressure superheater 7, a medium-pressure superheater 8, and a high-pressure superheater 9. Reheater 10, first steam flow regulating valve 11, second steam flow regulating valve 12, high pressure cylinder 13, first electromagnetic regulating valve 14, third steam flow regulating valve 15, fourth steam flow regulating valve 16, The second electromagnetic regulating valve 17, the medium pressure cylinder 18, the fifth steam flow regulating valve 19, the low pressure cylinder 20, the sixth steam flow regulating valve 21, the high pressure bypass reducing valve 22, the medium pressure bypass reducing valve 23, the fifth A shut-off valve 25, a first heat exchange...

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Abstract

The invention belongs to the technical field of combined heat and power generation, and discloses a heat supplying system of a fuel gas-steam combined circulation heat power plant. The system comprises three heat exchangers, and has three heat supplying modes connected in parallel; according to the first heat supplying mode, part of steam is introduced into one of the heat exchangers; according tothe second heat supplying mode, part of steam is introduced into the three heat exchangers in sequence; and according to the third heat supplying mode, all steam is introduced into the three heat exchangers in sequence. According to the heat supplying system of the fuel gas-steam combined circulation heat power plant, by adjusting steam inflow of a steam turbine of the fuel gas-steam combined circulation heat power plant, flexible switching of three heat supplying running modes is achieved, and therefore changing of heat supplying loads is achieved; and the problem that heat and electricity loads of the fuel gas-steam combined circulation heat power plant are not matched is effectively solved, and thermoelectric decoupling is achieved.

Description

technical field [0001] The invention belongs to the technical field of cogeneration of heat and power, and in particular relates to a heat supply system of a gas-steam combined cycle thermal power plant. Background technique [0002] Gas-steam combined cycle thermal power plants have the advantages of high overall cycle efficiency, less environmental pollution, and good peak-shaving performance. With the increasingly stringent national energy structure adjustment and environmental protection requirements, it plays an increasingly important role in the field of urban heating. role. At present, the conventional heat supply measures for gas-steam combined cycle thermal power plants mainly include steam extraction heat supply from medium pressure cylinder of steam turbine and high back pressure heat supply. Under the condition of rated natural gas volume, the heating capacity of the gas-steam combined cycle thermal power plant can meet the peak heating load requirements. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D1/06F24D1/08F24D19/10
CPCY02E20/16
Inventor 马红和张伟周璐马素霞
Owner TAIYUAN UNIV OF TECH
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