Pressure sensor installation joint and aircraft with its own
A pressure sensor and a technology for installing joints, which is applied in the field of civil aviation, can solve the problems of occupying a large installation space, wrong indication signals, and easy triggering of fuel low pressure alarm signals, etc.
Active Publication Date: 2022-08-09
COMAC +1
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Problems solved by technology
[0007] The object of the present invention is to provide a mounting joint for connecting the fuel tank of an aircraft to a pressure sensor, so as to solve the problem that there are many types and interfaces of the fuel pressure sensor mounting joint in the current civil aircraft, the installation and maintenance are complicated, and the installation The space is large and the measurement port of the fuel pressure sensor is easily blocked by ice cubes, ice crystals or impurities, which easily triggers the fuel low pressure warning signal and provides wrong indication signals
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[0047] Referring now to the accompanying drawings, specific embodiments of the present invention will be described in detail. What is described here is only the preferred embodiments of the present invention, and those skilled in the art can think of other ways to implement the present invention on the basis of the preferred embodiments, and the other ways also fall within the scope of the present invention.
[0048] figure 1 A fuel pressure sensor installation connection form on a certain type of aircraft is shown. This technical solution has the following shortcomings:
[0049] a) In this technical solution, the fuel pressure guiding pipe 1a is used to connect the fuel pressure guiding pipe in the fuel tank with the fuel pressure sensor 2a outside the fuel tank. The length of the fuel pressure guiding pipe 1a is longer, which increases the weight of the aircraft; The duct 1a has inconsistent bending patterns and poor installation versatility, which increases the types and ...
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The present invention relates to a mounting joint for realizing the connection between a fuel tank and a pressure sensor of an aircraft and an aircraft having the same. The mounting joint includes an internal connection structure with a line interface, an external connection structure with a sensor interface communicating with the line interface through an internal passage, and a mounting structure for mounting the mounting joint to the tank wall of the fuel tank. In the installed state, the inner connecting structure is located in the fuel tank and is used for connecting with the fuel pressure pipeline, and the outer connecting structure is located outside the fuel tank and is used for connecting with the pressure sensor. The mounting joint is constructed as a unitary structure as a whole, and the central axis of the sensor interface is perpendicular to the central axis of the inner passage. According to the present invention, the number and types of parts required for the installation of the pressure sensor can be reduced, the installation space is small, the EWIS wiring harness can be arranged in a compact and orderly manner, the installation process can be reduced, the weight of the aircraft can be reduced, and the manufacturing cost and route maintenance cost can be reduced.
Description
technical field [0001] The invention relates to the field of civil aviation, in particular to a pressure sensor mounting joint and an aircraft having the same. Background technique [0002] The fuel system of civil aircraft is usually equipped with a fuel pressure indicating system, whose function is to provide the fuel system computer with the outlet fuel pressure signals of all the fuel pumps on the aircraft, which is used to indicate the working status of the fuel pumps on the aircraft to the pilot. In addition, the fuel pressure signal in each fuel tank pressure fueling pipeline can also be provided to indicate the switch status of each fuel tank fueling cut-off valve to the crew. [0003] The fuel pump is installed in the aircraft fuel tank. Usually, a fuel pressure-inducing pipeline is led out from the fuel pump outlet, and is connected with one end of the over-frame joint on the aircraft fuel tank structure. Outside the tank, the fuel pressure sensor is mounted on t...
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IPC IPC(8): G01L19/00G01L19/12
CPCG01L19/0007G01L19/12
Inventor 姜亮宋志强高广拓丁南竹
Owner COMAC