Turbine expansion cooling and heating power supplying device based on flow splitting of air compressor and control method

Abstract

The invention provides a turbine expansion cooling and heating power supplying device based on flow splitting of an air compressor and a control method. The air compressor usually has a surge-to-stall problem and the like in a utilization process so that the flow pressure of the air compressor is fluctuated greatly and reduced, even the air compressor cannot work. In a cooling and heating power supplying system, needed compressed air is provided by the air compressor and the like, so that the total efficiency of the system is reduced. The turbine expansion cooling and heating power supplying device comprises a gas turbine system (15), wherein the gas turbine system is connected with an air turbine expansion refrigerating machine system (16) through a deflation control and flow splitting valve (6) of the air compressor; the gas turbine system comprises a gas turbine air compressor (1); the gas turbine air compressor is connected with the deflation control and flow splitting valve of the air compressor through a pipeline; and the deflation control and flow splitting valve of the air compressor is connected with a gas turbine combustion room (3) and a heat exchanger A (13) through pipelines respectively. The turbine expansion cooling and heating power supplying device is used for supplying mobile energy sources.

Description

[0001] Technical field: [0002] The invention relates to a mobile cooling, heating and power supply technology, in particular to a compressor-based turbo expansion cooling and heating power supply device and a control method. [0003] Background technique: [0004] As a distributed energy supply system, the mobile cooling and heating power supply system has received more and more attention. It has the advantages of strong adaptability, small size, light weight, and good controllability. Electric energy supply requirements, in frontier posts, islands, ships, ocean platforms, aircraft, tanks and vehicle auxiliary power and environmental control systems, small buildings, field army barracks, RVs and villas combined cooling, heating and power supply systems, ice and snow, Both military and civilian energy power fields such as emergency energy stations for earthquakes and natural disasters have good application space and promotion prospects. [0005] The mobile cooling, heating an...

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Problems solved by technology

[0005] The mobile cooling, heating and power supply system widely uses functional subsystems such as gas turbines, air turbo expansion refrigerators, motors, and generators. The gas turbine is the main engine of the energy supply system, and the compressor of the gas turbine is its main component. stage centrifugal compressor, and the main engine with higher power also adopts multi-stage axial flow compressor. The compressor often has problems such as surge and stall during use, which causes the flow pressure of the compressor to fluctuate greatly, drop or even fail to work. In order to solve the problem of surge To solve the problem of vibration and stall, usually a bleed valve is installed at the air outlet of the compressor. During operation, a certain flow rate of compressed air is released to improve the working stability of the compressor. The released gas has a certain temperature and a relatively high temperature. The pressure is usually discharged directly into the atmosphere without utilization, which causes a certain amount of waste and reduces the overall efficiency of the energy supply system

[0006] On the other hand, in the cooling and heating power supply system, the air turbo expansion refrigerator also needs a certain flow rate of compressed air. Usually this part of the gas is provided by the air compressor or other external air sources, which also improves the system usage to a certain extent. security requirements, reducing the overall efficiency of system use

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