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Geothermal wellhead power station system based on ORC systems and power generation method of geothermal wellhead power station system

A geothermal and power station technology, applied in the field of geothermal wellhead power station systems based on ORC systems, can solve the problems of inability to fully utilize heat energy in different levels, low energy utilization rate, and single utilization method, so as to achieve high heat energy utilization efficiency, improve utilization efficiency, and facilitate The effect of installation

Inactive Publication Date: 2016-06-15
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 plants have low utilization rate of energy
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 wellhead power station system based on ORC systems and power generation method of geothermal wellhead power station system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , the present invention discloses a geothermal wellhead power station system based on an ORC system. The geothermal wellhead power station system includes: a second gas-liquid separator 1, a flash tank 2, a third screw expander 3, and a fourth screw expander 4 , a third generator, a fourth generator, a first ORC system, and a second ORC system; the third generator and the fourth generator may be the same dual-shaft generator 5 .

[0031] The first end of the second gas-liquid separator 1 is connected to the third screw expander 3, and the saturated steam enters the third screw expander 3; the third screw expander 3 is connected to the double output shaft generator 5, and the third screw expander 3 Connect to the first ORC system.

[0032] The second end of the second gas-liquid separator 1 is connected to the flash tank 2, and the flash tank is connected to the fourth screw expander 4. The high-temperature and high-pressure brine enters the flash tank 2, a...

Embodiment 2

[0042] The difference between this embodiment and Embodiment 1 is that in this embodiment, the working medium delivery mechanism (the first working medium delivery mechanism and the second working medium delivery mechanism) is a combined working medium pump, and the combined working medium pump includes at least one A variable frequency pump and at least one fixed frequency pump, each variable frequency pump and fixed frequency pump are connected in parallel.

[0043] 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.

[0044] 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.

[0045] The second working con...

Embodiment 3

[0050] The difference between this embodiment and Embodiment 1 is that in this embodiment, the condenser (first condenser, second condenser) is a combined condenser, and the combined condenser includes at least one air-cooled condenser and at least one evaporative condenser. Condenser, each air-cooled condenser and evaporative condenser are connected in parallel.

[0051] 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.

[0052] In addition, the system further includes a second working condition automatic identification module, a second demand calculation module, and a second switching module.

[0053] The second working condition automatic identification module is used to identify the w...

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Abstract

The invention discloses a geothermal wellhead power station system based on ORC systems and a power generation method of the geothermal wellhead power station system. The geothermal wellhead power station system comprises a second gas-liquid separator, a flash tank, a third screw expander, a fourth screw expander, a third power generator, a fourth power generator, the first ORC system and the second ORC system. The first end of the second gas-liquid separator is connected with the third screw expander. Saturated steam enters the third screw expander. An exhaust opening of the third screw expander is connected with the first ORC system and an exhaust opening of the fourth screw expander. The second end of the second gas-liquid separator is connected with the flash tank. The flash tank is connected with the fourth screw expander. High-temperature and high-pressure brine enters the flash tank. The fourth screw expander is further connected with the first ORC system. The flash tank is connected with the second ORC system. The high-temperature brine obtained after flash evaporation enters the second ORC system. By means of the geothermal wellhead power station system based on the ORC systems and the power generation method of the geothermal wellhead power station system, the geothermal utilization efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of geothermal power generation, and relates to a geothermal wellhead power station system, in particular to a geothermal wellhead power station system based on an ORC 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 plants have a low utilization rate of 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-mentioned defects in the existing geothermal wellhead power station system. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K23/04F01K27/02
CPCF01K23/04F01K27/02
Inventor 汤炎齐井文
Owner SHANGHAI KAISHAN ENERGY EQUIP
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