Liquid anti-sloshing storage tank with rotatable cross-shaped blades and anti-sloshing method

A cross-shaped, liquid sloshing technology, used in large containers, containers, packaging, etc., can solve the problems of large local stress at the solid connection between the anti-sloshing structure and the tank, fatigue damage of the tank, and complex coupling of the tank.

Active Publication Date: 2016-06-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But no matter how the anti-sway structure is designed, as long as it is firmly connected with the storage tank, the effect of the complex fluid on the anti-sway structure will be transmitted to the storage tank through the anti-sway structure, which may cause complex coupling with the storage tank, and may cause some The local stress at the fixed connection between the anti-sway structure and the storage tank is too large, resulting in fatigue failure of the anti-sway structure and storage tank

Method used

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  • Liquid anti-sloshing storage tank with rotatable cross-shaped blades and anti-sloshing method
  • Liquid anti-sloshing storage tank with rotatable cross-shaped blades and anti-sloshing method
  • Liquid anti-sloshing storage tank with rotatable cross-shaped blades and anti-sloshing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] A liquid anti-sloshing storage box with rotatable cross-shaped blades, which is composed of: a rectangular storage box 1, in which a set of parallel cross-shaped blades 2 are installed, and the rotation axis of the cross-shaped blades 3 is connected to the wall of the storage tank, and the cross-shaped blade is hinged on the rotating shaft.

Embodiment 2

[0137] For the anti-sloshing method of the liquid anti-sloshing tank with rotatable cross-shaped blades, the rotating shaft of the cross-shaped blades is selected as Axis establishes a moving coordinate system ,make The surface is parallel to the free liquid surface in equilibrium, set Moment leaves with The angle between the faces is , Is the free liquid surface, the intersection line of the blade and the free liquid surface is The intersection of the faces is , The boundary line of the leaf and The intersection of the faces is , The leaf length is , The thickness can be ignored, the blade is relatively The moment of inertia of the shaft is , Assuming the angular velocity of the blade rotation or swing Not large enough, the rolling friction moment between the blade bearing and the tank It is proportional to the angular velocity of the blade:

[0138] (1)

[0139] Where: Is the rolling resistance coefficient;

[0140] Assuming that the rigid storage tank remains stat...

Embodiment 3

[0165] According to the anti-sloshing method of the liquid anti-sloshing storage tank with rotatable cross-shaped blades described in the second embodiment, the law of liquid movement in the tank with the cross-shaped blade structure that can rotate around the fixed axis in the liquid-filled rigid body is adjusted. The water wave theory of the constant-deep water body in a liquid rigid tank is, assuming that the liquid-filled rigid body tank is a rectangular tank, the rigid body is stationary, and the free surface of the liquid at the initial moment is , The liquid shook slightly after being slightly disturbed in a certain fluid area, The free surface of the liquid at moment is , The length of the rectangular tank is , The filling height is , The relative liquid velocity component in the thickness direction of the tank is equal to zero, the liquid in the tank can be simplified to a two-dimensional motion problem;

[0166] The liquid in the tank satisfies the Laplace equation, ...

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Abstract

The invention provides an anti-shaking liquid storage box with rotatable cross blades and an anti-shaking method. Shaking force and shaking moment, generated by shaking of liquid in the storage box, on the storage box affect the system dynamics, affect stability of a moving system and abrade and damage the internal structure of the storage box, the structural strength of the storage box is lowered or even damaged, and therefore it is necessary that shaking of liquid under different external stimulations is lowered through structure design, so that the shaking dynamic characteristics of liquid in the storage box is analyzed. Common liquid anti-shaking structures are various anti-shaking baffles which are fixedly connected with a storage box. The anti-shaking liquid storage box with the rotatable cross blades comprises a rectangular storage box body (1), a set of parallel cross blades (2) is arranged in the storage box body, a rotating shaft (3) of the cross blades is connected with the wall of the storage box body, and the cross blades are hinged to the rotating shaft. The anti-shaking liquid storage box is used for preventing liquid in the storage box from shaking.

Description

Technical field: [0001] The invention relates to a liquid anti-sway storage box with rotatable cross-shaped blades and an anti-sway method. Background technique: [0002] The liquid-filled system is composed of a tank and liquid, which can be regarded as a mechanical system with infinitely many particles, and its dynamic behavior is very complicated. When the storage tank is partially filled with liquid, the liquid in the storage tank has a free liquid surface, which is disturbed or excited by the outside and appears very complicated movement. At this time, the dynamic analysis of the liquid-filled system is more difficult. However, the problem of liquid sloshing widely exists in aerospace, nuclear engineering, earthquake, water transportation, road transportation, fluid mechanics, mathematics and other fields. Liquid sloshing involves many important parameters of the system, such as the dynamic pressure distribution on the tank wall and liquid sloshing. The generated swaying fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D90/52
Inventor 靳玉林陈予恕樊久铭周海东朱坤
Owner HARBIN INST OF TECH
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