Geothermal energy gradient utilization combined heat and power generation device and method

A technology of cogeneration of heat and power and geothermal energy, applied in geothermal energy, steam engine devices, geothermal collectors, etc., can solve problems such as waste of heat energy, achieve the effect of expanding the use of warm areas, realizing cogeneration of heat and power, and improving energy utilization efficiency

Pending Publication Date: 2019-02-01
HUANENG CLEAN ENERGY RES INST
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Problems solved by technology

[0006] The purpose of the present invention is to provide a cogeneration device and method for cascade utilization of geothermal energy, w...

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  • Geothermal energy gradient utilization combined heat and power generation device and method

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the present invention is described in further detail.

[0027] Such as figure 1 As shown, a cogeneration device for cascade utilization of geothermal energy provided by the present invention includes a geothermal well 1, a gas-liquid separator 2, a steam turbine 3, a condenser 4, a primary evaporator 5, an expander 6, and a condenser 7. The first storage tank 8, the working medium pump 9, the secondary evaporator 10, the compressor 11, the heat exchanger 12, the second storage tank 13, the throttle valve 14 and the recharge well 15, wherein the geothermal well 1 The outlet is connected to the inlet of the gas-liquid separator 2, the water vapor outlet of the gas-liquid separator 2 is connected to the inlet of the steam turbine 3, the outlet of the steam turbine 3 is connected to the inlet of the condenser 4, and the outlet of the condenser 4 is connected to the inlet of the recharge well 15;

[0028] The water outlet of t...

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Abstract

The invention provides a geothermal energy gradient utilization combined heat and power generation device and method. A geothermal well, a gas-liquid separator, a turbine, a condenser, a first-level evaporator, an expander, a heat exchanger and a recharge well are included. A geothermal water outlet of the geothermal well is connected with an inlet of the gas-liquid separator. A high-temperature water steam outlet of the gas-liquid separator is connected with an inlet of the turbine, and an outlet of the turbine is connected with an inlet of the recharge well through the condenser. A high-temperature liquid outlet of the gas-liquid separator is connected with a water inlet of the first-level evaporator, a high-temperature organic working medium outlet of the first-level evaporator is connected with an inlet of the expander, and a low-temperature organic working medium outlet of the expander is connected with a low-temperature organic working medium inlet of the first-level evaporator.A low-temperature water outlet of the first-level evaporator is connected with a heat side inlet of the heat exchanger, and a heat side outlet of the heat exchanger is connected with the inlet of therecharge well. The heat exchanger is further connected with external equipment. The system utilizes the part of hot water, comprehensive gradient utilization of geothermal energy is achieved, and theenergy utilization efficiency of the geothermal energy is improved; and meanwhile, power generation and heat supply are conducted, and combined heat and power generation is achieved.

Description

technical field [0001] The invention relates to the technical field of geothermal power generation, in particular to a heat and power cogeneration device and method for cascaded utilization of geothermal energy. Background technique [0002] Geothermal energy is a green, low-carbon, recyclable and renewable energy. It has the characteristics of large reserves, wide distribution, cleanness, environmental protection, stability and reliability. It is a feasible and competitive clean energy. my country is rich in geothermal resources, with huge market potential and broad development prospects. Accelerating the development and utilization of geothermal energy is not only of great significance for adjusting the energy structure, saving energy and reducing emissions, and improving the environment, but also has a significant pulling effect on cultivating emerging industries, promoting new urbanization, and increasing employment. It is an important measure to promote the construction...

Claims

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Application Information

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IPC IPC(8): F01K13/00F01K27/00F01K17/02F01D15/10F24T10/10
CPCF01D15/10F01K13/00F01K17/02F01K27/00Y02E20/14
Inventor 彭烁周贤李启明钟迪王保民
Owner HUANENG CLEAN ENERGY RES INST
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