Variable structure type C type LNG (liquefied natural gas) liquid tank oscillation test system

Abstract

The invention discloses a variable structure type C type LNG (liquefied natural gas) liquid tank oscillation test system, and belongs to the oceanographic engineering LNG/LPG (liquefied petroleum gas) storage and transportation technology field. The variable structure type C type LNG liquid tank oscillation test system is composed of an end socket, a main tank body, a swash bulkhead, an oscillation simulation platform, a control system and the like. A test tank is divided into three portions which are respectively a first end socket, a second end socket and the main tank body. The first end socket and the second end socket are installed at two ends of the main tank body. The swash bulkhead is fixed in the test tank, and placed at an optional position in the main tank by loosening and tightening a coupling screw on the swash bulkhead. Pressure sensors are arranged on designated positions in the test tank, on the end socket and on the swash bulkhead, and wireless signals and wired signals, sent by the pressure sensors, are received by the control system. The variable structure type C type LNG liquid tank oscillation test system has the advantages of being capable of testing influences of different forms of the end sockets on oscillation physical properties, using a dismountable combination mode, being convenient to install, dismantle and maintain, facilitating position and quantity adjustment of the swash bulkhead and form replacement of the swash bulkhead, and improving flexibility of a test.

Description

technical field [0001] The invention relates to the technical field of marine engineering LNG / LPG storage and transportation, in particular to a variable-structure type C-type LNG liquid tank sloshing test system. Background technique [0002] When the liquid in the independent C-type cargo tank of the LNG / LPG ship is partially filled and the LNG / LPG ship sails in waves, the liquid in the tank will slosh. Strong sloshing will directly lead to damage to the cargo hold, and in severe cases, average damage and pollution incidents will occur. Moreover, for the independent C-type cargo hold arranged along the length of the ship, when the natural frequency of liquid sloshing is close to the pitch frequency of the ship, the liquid sloshing and longitudinal The sloshing motion resonates, resulting in a large sloshing impact on the bulkhead of the independent C-type cargo tank, due to which the components constituting the independent C-type cargo tank may be damaged. On the other ha...

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Problems solved by technology

[0003] At present, the test device for sloshing simulation is basically not disassembled, and the structure inside and outside the model cabin cannot be changed. It is not conducive to the research on the form of the head, the position, quantity and form of the sloshing bulkhead, and it is impossible to conduct in-depth research on the sloshing problem. discuss

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