Turbine cooler provided with three coaxial impellers and capable of expanding in two ways

A turbo cooler, coaxial technology, applied in the direction of machines/engines, engine components, mechanical equipment, etc., can solve the problems of small flow, low turbine inlet pressure, low turbine output power, etc., to increase the expansion ratio and increase the cooling capacity , the effect of improving the cooling efficiency

Active Publication Date: 2015-05-13
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

Because the Mach number of the pod is low, the inlet pressure of the turbine is low, the flow rate is small, and the output power of the turbine is small
At this time, the power loss used to overcome the flow resistance of the environmental control system pipes and cold plates accounts for a large proportion, which greatly reduces the cooling efficiency of the pod environmental control system.
Therefore, in the case of low flight Mach number and large cold plate flow resistance, the traditional turbo cooler is no longer suitable for the airborne electronic pod environmental control system

Method used

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  • Turbine cooler provided with three coaxial impellers and capable of expanding in two ways
  • Turbine cooler provided with three coaxial impellers and capable of expanding in two ways

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Embodiment Construction

[0016] A three-wheel coaxial two-way expansion turbine cooler, as shown in the figure, has three working impellers: a refrigeration turbine impeller 4, a power turbine impeller 9, and a compressor impeller 24, and also includes a shaft 1, a self-locking nut 2, a refrigeration turbine worm Shell 3, turbine seal ring 5, turbine seal diaphragm 6, refrigeration turbine nozzle ring 7, power turbine nozzle ring 8, bearing housing 10, intermediate housing 11, vortex end bushing 12, lubricating oil end face seal 13, oil throwing Disk 14, rolling bearing 15, bearing bushing 16, bearing preload spring 17, compressor sealing diaphragm 18, oil core 19, butterfly spring 20, fastening nut 21, compressor volute 22 and pressure end bushing 23, Among them, the refrigeration turbine impeller 4, the refrigeration turbine nozzle ring 7 and the refrigeration turbine volute 3 form a refrigeration turbine unit; the power turbine impeller 9, the power turbine nozzle ring 8 and the intermediate housing...

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Abstract

The invention relates to a turbine cooler provided with three coaxial impellers and capable of expanding in two ways. The design that the three impellers, namely, the refrigeration turbine impeller (T), the power turbine impeller (T) and the gas compressor impeller (C), are coaxial is adopted for a shaft system of the turbine cooler, and the refrigeration turbine impeller, the power turbine impeller and the gas compressor impeller are sequentially arranged in the sequence of T, T and C. Compared with a conventional double-impeller (T and C) turbine cooler, the turbine cooler has the advantages that a power turbine unit is added between a refrigerator turbine and a gas compressor, auxiliary power is provided for pressurizing the gas compressor, the pressure ratio of the gas compressor and the expansion ratio of the refrigeration turbine are increased, the refrigerating capacity of the refrigeration turbine is improved, and therefore the technical purpose of refrigeration under the low flight Mach number and large cold plate flow resistance of an onboard avionic pod environment control system can be effectively achieved.

Description

technical field [0001] The invention relates to a turbo cooler, which adopts three working wheels arranged coaxially, two working gas paths, which are respectively expanded through a refrigeration turbine and a power turbine, and the product is supported by rolling bearings. Background technique [0002] As the core refrigeration component of the aircraft environmental control system, the turbo cooler can convert the high-temperature and high-pressure air drawn from the engine into low-temperature air for the aircraft cockpit and equipment compartment, reducing the temperature of the cockpit and equipment compartment. [0003] In the traditional two-wheel environmental control system, the air is usually bleed from the engine, the inlet pressure of the turbine is high, the flow rate is large, and the output power of the turbine is large. The refrigeration efficiency of the environmental control system is high, and the temperature adjustment of the aircraft cockpit and equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/12
Inventor 罗欣洋赵立珊高贞姬胡积友王飞韩云辉
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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