Aircraft fuel manifold test simulation system

Abstract

The invention discloses an aircraft fuel manifold test simulation system. The system comprises a buffer tank, the periphery of the buffer tank is connected with a fuel oil source, a nitrogen source, abuffer tank exhaust two-way valve, a buffer tank pressure release valve, a buffer tank pressure sensor, an oil supplementing valve, an oil discharge valve, a switching three-way valve, a heating heatexchanger, a refrigeration heat exchanger and a fuel oil pipeline test block, and a plurality of valves are arranged between the connected pipelines. The system has the beneficial effects that temperature control range is wide, with the largest range being -75 DEG C to 290 DEG C, the temperature control precision is high and can reach + / -0.2 DEG C, the flow control precision is high and can reach+ / -0.05 L / M, the pressure control precision can reach + / -3KPA, the output pressure can reach 105BAR, a high-frequency action valve is adopted in the system, and only 0.86 second is needed for pressure switching from 0BAR to 75BAR to 0BAR in one cycle.

Description

technical field [0001] The invention relates to the technical field of aviation fuel testing, in particular to an aircraft fuel main pipe testing simulation system. Background technique [0002] With the in-depth development of national independent commercial aircraft engines, some supporting test simulation systems also need to meet the corresponding process requirements. In particular, the fuel manifold of a commercial aircraft engine not only needs a simulation test system to provide high and low temperature simulation conditions, but also needs to provide a relatively high pressure output system, and can also simulate working conditions under vibration. Since the aircraft engine fuel system is a high-precision facility, the corresponding simulation test system not only achieves high precision in flow and pressure control, but also needs to control both flow and pressure under high standards. Because some test systems from abroad are not only expensive to supply to China...

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Problems solved by technology

[0003] The existing test system has the following problems: 1. The output pressure and flow can only be controlled by flow or pressure, which cannot be controlled at the same time; 2. The output pressure range of the test system is relatively low, generally not exceeding 10BAR; 3. The output of the test system is Relatively constant pressure, the vibration test cannot be done; 4. The previous test system cannot do the burst pressure (overpressure) test; 5. The previous test system can only do -40 ~ 150 ° C, and cannot reach the fuel temperature - 55~232℃; 6. The previous test system could not do the pressure cycle test, it only takes 0.86S from 0BAR to 75BAR and then to 0BAR

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