Waggle test storage tank liquid level measuring system

Abstract

The invention discloses a waggle test storage tank liquid level measuring system. A first branch pipe is connected with a filling and discharge unit and the bottom of a test storage tank. A second branch pipe is connected with the bottom end of the test storage tank and a communication pipe. The communication pipe is connected with the second branch pipe and a liquid level measuring organic glass pipe. An air outlet in the upper end of the test storage tank is communicated with an upper port of the liquid level measuring organic glass pipe, or the air outlet in the upper end of the test storage tank and the upper port of the liquid level measuring organic glass pipe are communicated with atmosphere. A first clamp is installed between the filling and discharge unit and the test storage tank. A second clamp is installed between the second branch pipe and the communication pipe. By means of the communicator principle, the liquid level in the storage tank is accurately measured through the liquid level measuring organic glass pipe, and accurate filling of propellant simulation liquid at different levels in the test storage tank is achieved; the clamps capable of being rapidly disassembled and assembled are adopted for connecting the pipes, the pipes can be rapidly assembled to and disassembled from the test storage tank, the state transition efficiency is greatly improved, and meanwhile negative influences caused by additional pipes on waggle test results are reduced.

Description

technical field [0001] The invention relates to the technical field of liquid sloshing tests, in particular to a storage tank liquid level measurement system for sloshing tests and a method for using the same. Background technique [0002] With the development of liquid fuel aircraft to high speed and high altitude, in terms of weight, the proportion of aircraft fuel in the total weight is increasing. For a series of large aircraft such as launch vehicles, intercontinental missiles, artificial satellites or spaceships, the weight of fuel can often account for as much as 90% of the total weight; therefore, the impact of liquid fuel sloshing on the flight performance of aircraft, especially for aircraft stability and Manipulative effects cannot be ignored. [0003] The aircraft will generate strong vibrations during flight, which will cause the liquid fuel to slosh in the tank. Since such sloshing often has a low natural frequency, it is usually easier to couple with the cont...

AI Technical Summary

Problems solved by technology

The existing technology usually uses the transparent part of the storage tank to directly measure the liquid level with a ruler; the pipeline is connected through a threaded structure, and the disassembly process is very complicated

The main problems in the liquid level filling, measurement and discharge of the existing storage tank liquid sloshing test are as follows: first, the accuracy of traditional measurement methods for large test storage tanks often has large errors, and the accuracy needs to be improved; second, the storage tank After the liquid management device is installed on the inner bottom, it is inconvenient to fill, discharge and measure the liquid propellant simulation liquid; third, the disassembly and assembly of the pipeline is cumbersome and takes a long time, which reduces the efficiency of state transition

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