Test device for service life of aircraft alternating current generator fuel oil and slide oil radiator

Abstract

The invention discloses a test device for the service life of an aircraft alternating current generator fuel oil and slide oil radiator. The test device for the service life of the aircraft alternating current generator fuel oil and slide oil radiator comprises a slide oil side normal temperature system, a slide oil side high temperature system, a fuel oil side normal temperature system, a fuel oil side high temperature system, a refrigeration system, an automatic control system and an environment cabin. According to the technical scheme, a plurality of fuel oil and slide oil radiator bodies can be subjected to cyclic fatigue tests of flow rate, pressure, temperature and ambient temperature; under the test system, high-temperature, high-pressure and large-flow slide oil is introduced intoa product; after test conditions are stable, the automatic control system is used for automatically switching, and low-temperature, low-pressure and small-flow slide oil is introduced into the product, therefore, the impact of oil flow rate, pressure and temperature can be verified to simulate the influence of oil flow rate, pressure, temperature and environment temperature of an aircraft on the service life of the product. The test flow rate, pressure and temperature are automatically detected, adjusted, collected and recorded by the automatic control system for each detection point on a pipeline, and feedback control and data recording are carried out through the collection parameters of each detection point.

Description

technical field [0001] The invention belongs to the technical field of simulation testing, and relates to a simulation testing technology of flow-pressure-temperature three comprehensive impacts, in particular to a life test device for a fuel-slip radiator of an aircraft alternator. Background technique [0002] The aircraft alternator fuel oil radiator is an accessory on the engine, which is used for heat dissipation of the aircraft oil system. In all previous flow-pressure-temperature three comprehensive impact test technologies, an independent fuel tank is used for oil supply on the side of lubricating oil, and an independent fuel tank is used to supply oil on the fuel side, and a tube heater is used for heating. When the product is tested, it needs to be heated to The maximum set value of temperature, the flow rate and the pressure reach the maximum set value at the same time, after ensuring the maximum flow rate, temperature and pressure are stable at the same time, the...

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Problems solved by technology

In the test, the heating rate of the oil is small, the cooling rate of the circulating water is relatively small, and because the temperature of the oil is constantly switching between high and low temperature conditions, the oil needs to be heated and cooled each time it is circulated, resulting in a cycle time period that is too long (about 45 minutes ), flow-pressure-temperature three comprehensive impact tests ranging from thousands of times to tens of thousands of times, the existing test conditions simply cannot meet the requirements of the product development progress

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