A claw engine power generation device for geothermal power generation

Abstract

The invention discloses a claw type engine generating device used for geothermal power generation. The device is composed of a regulating valve I (1), a flash evaporator (2), a claw type expander (3), a claw type vacuum pump (4), an electric generator (5) a valve I (6), a valve II (7), a water storage tank (8), a valve III (9), a valve IV (10), a negative pressure condenser (11) and a regulating valve II (12). The electricity generation cycle includes: water vapor expands in the claw type expander (3), and condenses in the negative pressure condenser (11); and the claw type vacuum pump (4) pumps the noncondensable gas in the negative pressure condenser (11). Claw type rotors in the claw type expander (3) and the claw type vacuum pump (4) are all applied with completely smooth rotor profile; four sets of intermeshing same claw type rotors are arranged in the claw type expander (3) in parallel; and the claw type expander (3) is in coaxial serial connection with the claw type vacuum pump (4) and the electric generator (5). The whole generating device has the advantages of compact structure, oil-free property and uniform moment variation.

Description

technical field [0001] The invention relates to an engine generating device for generating electricity by using geothermal energy, in particular to a claw engine generating device for geothermal power generation using a claw expander and a claw vacuum pump. Background technique [0002] Geothermal power generation has broad application prospects. The existing geothermal power generation methods include direct steam power generation, capacity expansion power generation, and duplex cycle power generation. With the gradual development and utilization of geothermal energy, it is of great significance to propose a new engine power generation device for geothermal power generation. [0003] Chinese patent, publication number CN102926826A, discloses a claw engine power generation cycle device for thermal power generation, the power generation process includes: gas expansion process in the claw expander, isobaric heat release process in the regenerator , the isobaric heat release p...

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Problems solved by technology

[0003] Chinese patent, publication number CN102926826A, discloses a claw engine power generation cycle device for thermal power generation, the power generation process includes: gas expansion process in the claw expander, isobaric heat release process in the regenerator , the isobaric heat release process in the cooler, the compression process in the claw compressor, the isobaric heat absorption process in the regenerator, and the isobaric heat absorption process in the heater; the characteristics of the device: (1) The power generation working medium is gas, which has no phase change in the power generation cycle, and is suitable for applications with high heat source temperature, such as: solar high-temperature thermal power generation; (2) Two-stage claw expander and two-stage claw compression machine, its compression ratio is high, but the air inlet of the claw expander is not opened at any time, and the claw expander does not have continuous work output throughout the cycle, and its output work is not uniform

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