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Island geothermal energy electricity and freshwater cogeneration system

A technology of geothermal energy and islands, applied in geothermal energy systems, geothermal energy power generation, heat collectors using groundwater as a working fluid, etc., can solve problems such as high cost, poor safety, and strong typhoon impact, and achieve stable and continuous temperature Effects of stabilizing output and increasing power generation

Inactive Publication Date: 2019-08-23
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the current diesel power generation, wind power, solar power and wave power generation can meet the power demand of the islands to a certain extent, they also face problems such as high cost, poor safety, and strong impact from typhoons.

Method used

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  • Island geothermal energy electricity and freshwater cogeneration system

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Embodiment

[0020] Such as figure 1 As shown, an island geothermal energy desalination cogeneration system includes a geothermal well, a power generation device and a water purification device. The geothermal well consists of two parts: a tight rock layer 17 and a hot water reservoir 19 . The tight rock layer 17 is located underground, and the hot water reservoir 19 is located below the tight rock layer 17. The depth of the geothermal well needs to penetrate through the tight rock layer 17 and communicate with the hot water reservoir 19 to extract geothermal resources. The geothermal well adopts a metal well wall 15, and the metal well wall 15 is provided with a screen pipe 18 in the hot water reservoir 19, which is used to communicate with each part of the hot water reservoir 19, so as to make full use of the geothermal resources in the hot water reservoir 19.

[0021] The power generation device includes a flash tank 7, a steam turbine 6 and a generator 5, the flash tank 7, the steam t...

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Abstract

The invention discloses an island geothermal energy electricity and freshwater cogeneration system. The system comprises a geothermal well, a power generation device and a water purification device, wherein the power generation device comprises a flash evaporation tank, a steam turbine and a generator; a submersible pump is arranged at the wellhead of the geothermal well; the submersible pump is connected with the flash evaporation tank; the water purification device comprises a condenser and a fresh water tank; the steam turbine is connected with a heat medium inlet of the condenser; the fresh water tank is connected with a heat medium outlet of the condenser; a cold medium inlet of the condenser is connected with a water supply pump; and a cold medium outlet of the condenser is connectedwith a drain pipe. According to the system, the geothermal energy is used as a heat source, geothermal energy output temperature is stable, continuous and stable generation of the electricity and freshwater by the system can be guaranteed; fresh cold seawater is adopted to enter into the condenser, generated power and freshwater output of the geothermal single-well can be effectively improved; the flash evaporation tank and the steam turbine are combined for power generation, the electricity and freshwater can be simultaneously generated; and the whole system can be placed underground, and the concealment property is good.

Description

technical field [0001] The invention relates to the technical field of utilization of geothermal energy, in particular to an island geothermal energy cogeneration system. Background technique [0002] Many of my country's islands are far away from the mainland, and there is an urgent need for electric energy and fresh water. Although the current diesel power generation, wind power, solar power and wave power generation can meet the power demand of the islands to a certain extent, they also face problems such as high cost, poor safety, and strong impact from typhoons. As a clean and stable energy source, geothermal energy can provide islands with safe and stable electricity and fresh water needs. The geothermal power generation and freshwater cogeneration system can be built underground, which is safe and concealed, not affected by typhoons, and can provide stable power and freshwater output. Contents of the invention [0003] Aiming at the deficiencies of the prior art, ...

Claims

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Application Information

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IPC IPC(8): F03G4/00F01K27/00F01K13/00F01K9/00F01K17/04F01D15/10F01D25/12E21B43/00F24T10/20C02F1/06C02F103/08
CPCC02F1/06C02F2103/08E21B43/121F01D15/10F01D25/12F01K9/003F01K13/006F01K17/04F01K27/00F24T10/20Y02E10/10Y02E20/14
Inventor 卜宪标马伟斌龚宇烈
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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