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Starting method of supercritical fluid closed cycle engine with mw power level

A supercritical fluid, closed-cycle technology, which is used in machines/engines, mechanical equipment, gas turbines, etc., can solve the problem that the starting methods of ordinary motors and gear drives are complicated in structure and cannot meet the MW power level of closed-cycle engine power and Speed ​​requirements and other issues to achieve the effect of reducing consumption

Active Publication Date: 2020-06-23
AECC HUNAN AVIATION POWERPLANT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for starting a MW power level supercritical fluid closed-cycle engine to solve the problem that the existing high-speed motor cannot meet the power and rotational speed requirements of a MW power level closed-cycle engine or the starting method using an ordinary motor and gear transmission complex technical issues

Method used

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  • Starting method of supercritical fluid closed cycle engine with mw power level
  • Starting method of supercritical fluid closed cycle engine with mw power level

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Embodiment 1

[0033] figure 1 It is a structural schematic diagram of a MW power level supercritical fluid closed cycle engine in a preferred embodiment of the present invention.

[0034] Such as figure 1 As shown, the starting method of the MW power level supercritical fluid closed cycle engine of this embodiment, preferably, the power of the supercritical fluid closed cycle engine is 0.2~5MW, and the MW power level supercritical fluid closed cycle engine includes a storage Gas tank 1, first buffer tank 2, compressor 3, second buffer tank 4, heater 5 and turbine 6, gas storage tank 1, first buffer tank 2, compressor 3, second buffer tank 4, heater 5. The turbine 6 and the gas storage tank 1 are connected in sequence to form a circuit; the compressor 3 and the turbine 6 constitute the core engine of the engine, and the compressor 3 and the turbine 6 are connected to each other through a shaft.

[0035] The starting method of the MW power level supercritical fluid closed cycle engine compr...

Embodiment 2

[0051] figure 2 It is another structural schematic diagram of the MW power level supercritical fluid closed cycle engine of the preferred embodiment of the present invention.

[0052] Such as figure 2 As shown, the starting method of the MW power level supercritical fluid closed cycle engine of this embodiment, preferably, the power of the supercritical fluid closed cycle engine is 0.2~5MW, and the MW power level supercritical fluid closed cycle engine includes a storage Gas tank 1, first buffer tank 2, compressor 3, second buffer tank 4, heater 5 and turbine 6, gas storage tank 1 is connected to first buffer tank 2, first buffer tank 2, compressor 3, second The buffer tank 4, the heater 5, the turbine 6, and the first buffer tank 2 are connected in sequence to form a closed circulation loop, and the turbine 6 communicates with the atmospheric environment through the fifth valve 11; the compressor 3 and the turbine 6 constitute the core engine of the engine, and the compres...

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Abstract

The invention discloses a starting method of an MW-power-level supercritical fluid closed-cycle engine. A rotor of the engine is directly driven by potential energy of a high-pressure working medium in the engine, power balance / rotating speed balance of a turbine and an air compressor is achieved, and the self-sustaining working state of the rotor is achieved; and through self-starting, a core engine constituted by the air compressor and the turbine is firstly started, then the power turbine is further started through a high-temperature and high-pressure working medium provided by the core engine, and normal work of the MW-power-level supercritical fluid closed-cycle engine is completed. After the MW-power-level supercritical fluid closed-cycle engine adopts a self-starting scheme, the structure of the closed-cycle engine can be significantly simplified, meanwhile, no external power supply or high-capacity storage battery is required, the application environment of the closed-cycle engine is further widened, the thermal cycle efficiency of the closed-cycle engine is improved, and economic benefits of the closed-cycle engine are increased.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a method for starting a MW power class supercritical fluid closed cycle engine. Background technique [0002] At present, the relevant literature on closed-cycle engines mainly focuses on laboratory research results. The principle prototype in the laboratory is characterized by low engine power, and there are mature products available in the market for high-speed motors with matching power levels. There are two main layouts of the high-speed motor of the principle prototype in the laboratory. One is that the engine has a single-rotor structure, and the same high-speed motor is used for starting and power generation. After the process is over, the excess power of the turbine is absorbed to output electric energy. The other is that the engine has a double-rotor structure and needs to be equipped with two motors, one of which is mainly used for starting the core engine, and the ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/27F02C1/10
CPCF02C1/10F02C7/27
Inventor 廖乃冰吴雪蓓吴元旦余强
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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