Floater valve open position testing tool and testing method

Abstract

A floater valve open position testing tool is utilized to solve the problems that operation steps are complex and instruments and equipment are difficult to install existing in a method that detection is directly carried out in an aircraft fuel tank environment. The floater valve open position testing tool comprises an upper shell and a lower shell. The upper shell is of an inverted sleeve structure, a floater locating mechanism is arranged on a top cover of the upper shell, and an upper shell observation window is formed in the side wall of the upper shell; the lower shell is of a cylindrical structure, and a lower shell observation window is formed in the side wall of the lower shell; a detected floater valve device is installed in an upper shell sleeve, after the upper shell and the lower shell are fastened, the upper shell sleeve and the detected floater valve device are arranged in a lower shell inner cavity, and aircraft fuel is injected into the lower shell to form a testing environment which simulates an aircraft fuel tank. The floater valve open position testing tool can complete testing operation of the floater valve open position of the aircraft fuel tank rapidly and accurately and guarantees safe flight of an aircraft.

Description

technical field [0001] The invention relates to a test tool and method, in particular to a test tool and a test method for the opening position of a float valve in an aircraft fuel tank, belonging to the technical field of test and measurement. Background technique [0002] The control of the fuel volume in the aircraft fuel tank is very important to ensure the safe flight of the aircraft, and the control of the fuel volume in the aircraft fuel tank is realized through the joint work of the float valve in the fuel tank and the pressure refueling control valve. When the oil level in the fuel tank is lower than the set float valve When the corresponding height is opened, the float valve falls under the action of gravity, leaves the valve seat, and the float valve is opened, so that the pressure refueling control valve is released to open, and the fuel tank is refueled under pressure. [0003] In order to ensure accurate control of the amount of fuel in the fuel tank of the air...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure accurate control of the amount of fuel in the fuel tank of the aircraft, the opening position of the float valve must be detected before the aircraft is delivered to use. The steps are very cumbersome, and the installation of instruments and equipment is also very difficult. Therefore, it is urgent to design a special tool that can simulate the environment of the aircraft fuel tank and facilitate the detection of the opening position of the float valve, so as to solve the urgent needs of aircraft manufacturing and maintenance enterprises.

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