Geothermal well opening power station system and power generation method thereof

A power station and geothermal technology, applied in geothermal energy systems, geothermal energy power generation, heat collectors using groundwater as the working fluid, etc., can solve the problems of single utilization mode, inability to fully utilize heat energy in different stages, heat loss, etc., and achieve heat energy utilization High efficiency, improved utilization efficiency, and easy installation

Inactive Publication Date: 2016-07-06
SHANGHAI KAISHAN ENERGY EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing geothermal power stations need to collect hot water from geothermal wells in different regions for use together. Long-distance transportation will cause heat loss, and the utilization method is single, so it is impossible to fully utilize heat energy in stages

Method used

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  • Geothermal well opening power station system and power generation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 , the present invention discloses a geothermal wellhead power station system, said geothermal wellhead power station system includes: a second gas-liquid separator 1, a flash tank 2, a second steam screw expander 3, a second generator 4, and a steam ORC system . The second screw expander 3 is connected to a second generator 4 .

[0027] The steam ORC system includes a first evaporator 11, a first preheater 12, a first working fluid delivery mechanism 13, a first condenser 14, a first steam screw expander 15, a first generator 16, a first gas Liquid separator 17; the first condenser 14 can be an air-cooled condenser, a water-cooled condenser or an evaporative condenser.

[0028] The first end of the second gas-liquid separator 1 is connected to the second steam screw expander 3, the second end is connected to the flash tank 2, the saturated steam enters the second steam screw expander 3, and the high-temperature and high-pressure brine enters the flash tan...

Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 is that in this embodiment, the working medium delivery mechanism is a combined working medium pump, and the combined working medium pump includes at least one variable frequency pump and at least one fixed frequency pump. Each variable frequency pump, Fixed frequency pumps are connected in parallel.

[0036] In the heat engine stage, start-up stage and partial load conditions, only use variable frequency pumps, or use a combination of part or all variable frequency pumps and part or all fixed frequency pumps; in full load conditions, use variable frequency pumps and fixed frequency pumps The pumps are all on.

[0037] At the same time, the system also includes a second working condition automatic identification module, a second demand calculation module, and a second switching module.

[0038] The second working condition automatic identification module is used to identify the working condition of the system, and...

Embodiment 3

[0043] The difference between this embodiment and Embodiment 1 is that in this embodiment, the condenser is a combined condenser, and the combined condenser includes at least one air-cooled condenser and at least one evaporative condenser, and each air-cooled condenser , Evaporative condensers connected in parallel.

[0044] When the ambient temperature is higher than the first set temperature, the evaporative condenser plays a major role in reducing the condensation temperature of the system. When the ambient temperature is lower than the second set temperature, the air-cooled condenser plays a major role in reducing the condensation temperature of the system.

[0045] In addition, the system further includes a second working condition automatic identification module, a second demand calculation module, and a second switching module.

[0046] The second working condition automatic identification module is used to identify the working condition of the system and judge whether...

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PUM

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Abstract

The invention discloses a geothermal well opening power station system and a power generation method thereof. The geothermal well opening power station system comprises a second gas-liquid separator, a flash evaporation tank, a second screw expander, a second electric generator and a steam ORC system; the second screw expander is connected with the second electric generator; the first end of the second gas-liquid separator is connected with the second screw expander, and the second end of the second gas-liquid separator is connected with the flash evaporation tank; saturated steam enters the second screw expander, and high-temperature and high-pressure brine enters the flash evaporation tank; steam obtained by flash evaporation is mixed in an outlet of the second screw expander and then enters the steam ORC system through a first evaporator, and the brine obtained by flash evaporation is conveyed to a recharge well through a first conveying mechanism and is injected into the underground again; and according to the geothermal well opening power station system and the power generation method thereof, the utilization efficiency of the geothermy can be improved.

Description

technical field [0001] The invention belongs to the technical field of geothermal wellhead power generation, and relates to a geothermal wellhead power station system, in particular to a geothermal wellhead power station system based on an organic Rankine cycle expander; at the same time, the present invention also relates to a power generation method of the geothermal wellhead power station system. Background technique [0002] A geothermal power station is a power station that uses underground hot water, high-temperature rock mass or steam as primary energy. Existing geothermal power stations need to collect hot water from geothermal wells in different regions and use it together. Long-distance transportation will cause heat loss, and the utilization method is single, which makes it impossible to fully utilize heat energy in stages. [0003] In view of this, there is an urgent need to design a new geothermal wellhead power station system in order to overcome the above-ment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G4/00F01C13/00F01K23/02
CPCF01C13/00F01K23/02F03G3/00F24T10/20Y02E10/10
Inventor 汤炎齐井文
Owner SHANGHAI KAISHAN ENERGY EQUIP
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