A multi-functional experimental platform for the transient response characteristics of the cavity

A transient response and multi-functional technology, applied in the direction of jet engine testing, gas turbine engine testing, etc., can solve problems such as the inability to conduct multi-cavity transient characteristic coupling experiments, and achieve the effect of easy replacement, assembly, and disassembly

CN110553848BActive Publication Date: 2021-05-11NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-05-11

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Abstract

The invention discloses a multifunctional test bench for the transient response characteristics of a disc cavity, which comprises an air supply system, an experiment section capable of communicating with the air supply system, and a test system installed on the air supply system and the experiment section; the air supply system includes a The pipes are sealed and connected in turn to the air compressor, air storage tank and air filter. The pipe passing through the air filter is divided into a cold air pipe and a hot air pipe. The cold air pipe and the hot air pipe are divided into two branches. The first branch is provided with a solenoid valve pipeline that can communicate with it. The solenoid valve pipeline is divided into the first branch of the solenoid valve and the second branch of the solenoid valve; and the static cavity; the first branch of the solenoid valve can communicate with the static cavity, and the two branches of the hot gas pipeline can communicate with the rotary static cavity and the static cavity. The invention can carry out multi-cavity coupling transient characteristic experiment of cold and hot state static chamber-rotary static chamber, and provides data support for performance analysis of transition state air system.
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Description

technical field

[0001] The invention belongs to the technical field of aero-engine air system transition state research, and in particular relates to a multi-functional disc chamber transient response characteristic test bench. Background technique

[0002] When the engine is in a transition state or an emergency state, the parameters of the primary flow and the secondary flow are very unstable. Due to factors such as volume effect and fluid inertia, the interior of the disc cavity, which is an important part of the air system, will experience a complex transient flow process, and the changes in airflow parameters cannot be synchronized and reproduce the changing law of disturbances, but there is a certain delay and lag , and even fluctuations. The appearance of the transient response phenomenon of the disk cavity will bring a series of hazards to the normal operation of the engine, such as the intrusion of mainstream gas and the decrease of cooling efficiency of high-tempe...

Examples

Embodiment 1

[0042] Such as Figure 1 to Figure 4As shown, this embodiment provides a multi-functional test bench for the transient response characteristics of the cavity, including a gas supply system 1, an experimental section 2 that can communicate with the gas supply system 1, and a gas supply system installed on the gas supply system 1 and the experimental section 2 Test system; air supply system 1 comprises air compressor 11, air storage tank 12 and air filter 13 that are sealed and communicated through pipelines successively, and the pipeline through air filter 13 is divided into cold air pipeline 14 and hot air pipeline 15, cold air pipeline 14 and The hot air pipeline 15 is equally divided into two branches, and the two branches near the cold air pipeline 14 are provided with a solenoid valve pipeline 16 that can communicate with it. The solenoid valve pipeline 16 is divided into a first solenoid valve branch 161 and a second solenoid valve branch. The branch 162 is provided with ...