Combined heat and power generation system and heat supplying method
A technology of combined heat and power generation and heating network, which is applied in heating methods, household heating, heating systems, etc., can solve problems such as the imbalance between the heating network and the heat user, the mismatch between the heating temperature and the heating temperature, and achieve relief The effect of mutual restriction and reduction of waste of energy grade
Active Publication Date: 2015-06-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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[0009] Aiming at the disadvantages mentioned in the above background technology that the heating temperature does not match the heat consumption temperature, the grade imbalance between the heating network and the heat users, etc., the present invention proposes a combined heat and power system and a heating method
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[0033] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0034] The combined heat and power system of the present invention includes a boiler 1, a steam turbine high-pressure cylinder 2, a steam turbine medium-pressure cylinder 3, a steam turbine low-pressure cylinder 4, a generator 5, a condenser 6, a cooling tower 7, a direct-connected heating network system 8, and a heating network The main circulation pump 9, the peak boiler 10 and the heat recovery system 11 of the thermal power plant, such as figure 1 shown;
[0035] The outlet of boiler 1 is respectively connected with steam turbine high pressure cylinder 2 and steam turbine medium pressure cylinder 3; steam turbine high pressure cylinder 2 is respectively connected with steam turbine medium pressure cylinder 3 and t...
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The invention discloses a combined heat and power generation system and a heat supplying method in the technical field of combined heat and power generation. The combined heat and power generation system comprises a boiler (1), a turbine high-pressure cylinder (2), a turbine intermediate-pressure cylinder (3), a turbine low-pressure cylinder (4), a generator (5), a condenser (6), a cooling tower (7), a directly-connected heating network system (8), a water circulating pump (9), a peak boiler (10) and a thermal power plant heat regenerative system (11). With the adoption of the combined heat and power generation system and the heat supplying method, the exhaust steam heat of the power station steam turbine is recovered; the energy grade waste caused by steam extraction and heat supplying with unreasonable parameters at present can be greatly reduced, and the overall energy saving of the combined heat and power generation system can be achieved. According to the invnetion, difference between the return water temperature and the heating temperature is low; and a large-scale distributing type variable frequency pump directly-connected heating network system can be applied for the generation system. The maximization of energy-saving and emission-reducing benefit can be achieved, and the interaction between thermal load and power load in the combined heat and power generation system is relieved.
Description
technical field [0001] The invention belongs to the technical field of heat and power cogeneration, and in particular relates to a heat and power cogeneration system and a heat supply method. Background technique [0002] The heating system is composed of heat source, heat network and heat users. The theoretical combustion temperature of coal and other fossil energy at the heat source is above 1000°C. As far as heating is concerned, most of the current low-grade heating cogeneration systems in my country adopt steam extraction heating mode, and the popular hot water heating network system supplies The return water temperature is generally 95°C / 70°C (low-temperature hot water heating system) or 130°C / 70°C (high-temperature hot water heating system), while the temperature required by heat users is only around 20°C. The energy grades of heat users are seriously mismatched. As far as the current technical level is concerned, the current combined heat and power system still has de...
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IPC IPC(8): F01K11/02F01D15/10F24D3/14F24D3/16
Inventor 宋之平杨勇平李沛峰戈志华杨佳霖
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)