A method for reading U-shaped pipe of ship inclination test

Abstract

A method for reading a U-shaped tube of a ship inclination test is disclosed. When the variation value of the water level height value of the gauge of the U-shaped pipe does not exceed 100 mm, the data of a plurality of groups of yaw cycles are read, and each group of data is the maximum water level height value and the minimum water level height value on the gauge in the same yaw cycle, and the data of each group are summed and averaged, and the average value is the ship roll value. When the variation value of water level height does not exceed 100mm, the data in several groups of sway cyclescan be read to reduce the influence of wave and wind on the water level height of U-shaped pipe gauge. By reading the maximum water level height value and the minimum water level height value on thegauge in the same rolling period of the ship, the accuracy of the reading of the gauge can be ensured, and the average value of the water level height value can be obtained through several groups of water level height values, so as to ensure the accuracy of the reading of the gauge and improve the accuracy of measuring the weight and the center of gravity of the ship.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a method for reading a U-shaped tube in a ship inclination test. Background technique [0002] After the ship is completed, it is usually necessary to conduct a ship inclination test to determine the weight of the ship and the height of the center of gravity by obtaining the heel angle generated under the ballast at different positions. U-shaped tube is one of the important test tools for tilt test. The U-shaped tube generally includes a long transparent plastic tube, a bracket with a scale, and a water basin with a bracket. The long transparent plastic tube is about 10 meters long. The two ends of the long tube are respectively connected to the bracket and the water basin. left and right sides. The weight and height of the center of gravity of the ship are calculated by the reading change of the liquid level of the variable scale on the left and right sides of the ship. Because...

AI Technical Summary

Problems solved by technology

Because in the inclination test of the ship, there are often other ships sailing in the channel, and the navigation of other ships will bring about large wave changes, which seriously affects the accuracy of the scale reading on the bracket

Moreover, the wind and waves on the river surface of the tilt test also have a greater impact on the readings of the tilt test

The above-mentioned external factors usually lead to large errors in the readings of the ship in the inclination test, resulting in wrong calculations of the ship's weight and center position height

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