Fuel oil nozzle cyclone air flow test bench and test method thereof

Abstract

The invention belongs to the technical test field of an aerospace engine fuel oil injection system and especially relates to a fuel oil nozzle cyclone air flow test bench. The test bench comprises anexternal air source mechanism, a working chamber and an exhaust chamber, which are communicated in sequence through air pipes. The air pipe between the external air source mechanism and the working chamber is provided with a stop valve, an oil and gas separator, a regulating valve, a float flowmeter, a first-stage pressure fine-tuning assembly and a first pressure meter. The air pipe between the working chamber and the exhaust chamber is provided with a second-stage pressure fine-tuning assembly. The working chamber is provided with a second pressure meter. The first-stage pressure fine-tuningassembly comprises a first-stage regulating valve and a first-stage high-precision fine-tuning regulating valve, which are arranged in parallel. The second-stage pressure fine-tuning assembly comprises a second-stage regulating valve and a second-stage high-precision fine-tuning regulating valve, which are arranged in parallel. The invention also relates to a method for carrying out test throughthe test bench above.

Description

technical field [0001] The invention belongs to the technical test field of aerospace engine fuel injection system, and in particular relates to a swirler air flow test bench for a fuel nozzle, and also relates to a test method using the test bench. Background technique [0002] At present, in the aerospace field, the test benches for engine fuel injection systems are all self-made, and foreign countries have imposed a technical blockade on us. Only professional fuel injection nozzle manufacturers can have such test benches, and politically and technically blockade, making it unavailable in the market. It can only be designed, developed and manufactured by itself. There has been no good test equipment for aviation kerosene spray angle test. When high-precision control of aviation kerosene atomization test is required, the old-fashioned tester cannot be completed. Therefore, it is very important to develop a new type of test bench. [0003] There are only three similar test...

AI Technical Summary

Problems solved by technology

There has been no good test equipment for aviation kerosene spray angle test. When high-precision control of aviation kerosene atomization test is required, the old-fashioned tester cannot be completed. Therefore, it is very important to develop a new type of test bench

[0003] There are only three similar test benches owned by large state-owned enterprises in China, and they are all old-fashioned test benches from the 1970s. They are all low-end manual and open. The test accuracy of this kind of test bench is not accurate, and it is not closed. The body of the personnel is injured, and aviation kerosene evaporates into the air and pollutes the environment

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