Test bench with double combustion chambers, double superchargers and low cycle fatigue based on self-circulation mode

Abstract

The invention relates to a test bench with double combustion chambers, double superchargers and low cycle fatigue based on a self-circulation mode, belonging to the technical field of power machinery. When the test bench with superchargers and low cycle fatigue which adopts a self-circulation principle is started and works, an external gas source firstly supplies gas to the combustion chambers and is closed after the superchargers stably runs, and a turbine and a compressor form self circulation, thereby reducing the dependency to power and the consumption of power, only needing fuel oil with a certain quantity and lowering the requirement of a low cycle fatigue test to compressed air and further reducing the requirement to an air compressor. In the test bench, air flows are respectively supplied to turbines of the two superchargers by adopting the two combustion chambers, and a measure that a flow distribution valve is installed before each combustion chamber enables the test bench with the double combustion chambers, the double superchargers and the low cycle fatigue to realize different gas inlet temperatures of each supercharger, thereby the mechanical load and the heat load needed by the low cycle fatigue test is changed, and the high temperature resistance requirements of materials of the flow distribution valve is reduced with high performance price ratio.

Description

technical field [0001] The invention relates to a low-cycle fatigue test bench for double combustion chambers and double superchargers based on a self-circulation mode, belonging to the technical field of power machinery. Background technique [0002] In the development of internal combustion engines, the application of turbocharging technology has played an important role in improving the specific power and fuel economy of internal combustion engines, reducing emissions, etc., and is known as an important milestone in the history of internal combustion engines. With the wide application of superchargers on internal combustion engines, there are more and more failures and damages of the entire engine caused by supercharger failures. Therefore, to improve the reliability of supercharger parts and optimize the design of supercharger parts, Improving supercharger fatigue life has become one of the focuses of supercharger research at this stage. Some basic technical research wo...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the material of the flow distribution valve has high requirements for high temperature resistance, and the two superchargers cannot be tested at different speeds, so as to change the mechanical load and thermal load required by the low-cycle fatigue test, and provide an automatic Low-cycle fatigue test bench with double combustion chamber and double supercharger in cycle mode

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