CN103196652B - A kind of active liquid tank oscillation simulation test device - Google Patents

A kind of active liquid tank oscillation simulation test device Download PDF

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Publication number
CN103196652B
CN103196652B CN201310148125.4A CN201310148125A CN103196652B CN 103196652 B CN103196652 B CN 103196652B CN 201310148125 A CN201310148125 A CN 201310148125A CN 103196652 B CN103196652 B CN 103196652B
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CN
China
Prior art keywords
liquid tank
computing machine
sloshing
rotation axis
guide rail
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CN201310148125.4A
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Chinese (zh)
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CN103196652A (en
Inventor
杨建民
胡志强
谢志添
赵文华
彭涛
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上海交通大学
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Priority to CN201310148125.4A priority Critical patent/CN103196652B/en
Publication of CN103196652A publication Critical patent/CN103196652A/en
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Abstract

The present invention relates to a kind of active liquid tank oscillation simulation test device, comprise computing machine, sloshing assembly, resistance type wave height gauge and signal acquisition process device, described computing machine is connected with sloshing assembly, described sloshing assembly is fixedly connected with liquid tank, described resistance type wave height gauge is located in liquid tank, and is connected with computing machine by signal acquisition process device.Compared with prior art, the present invention can set the reciprocating amplitude of liquid tank and cycle arbitrarily within the scope of certain amplitude and certain frequency, and under this motion-activated, record the Free Surface real time data of liquid sloshing in cabin, thus understand ship motion to the impact of sloshing, can also stepless change be realized in addition, improve the precision of test.

Description

A kind of active liquid tank oscillation simulation test device
Technical field
The present invention relates to the test unit of liquid sloshing in a kind of boiler-plate, especially relate to a kind of active liquid tank oscillation simulation test device.
Background technology
Shortage due to petroleum resources and the continuous growth to energy demand, the exploitation in gas field, limit, ocean obtains development energetically.In order to develop gas field, limit, ocean cost-effectively, propose the concept of FLNG (Floating Liquefied Natural Gas ship) in the world.Because the operation marine environment of FLNG is complicated and changeable, acutely rocking of liquid in cabin can be caused by the hull strenuous exercise that it causes, and in cabin, rocking of liquid also will be aggravated the motion of hull conversely and may cause the destruction of liquid tank inwall.In gas extraction process, FLNG is by Loading conditions different for experience and complicated marine environmental conditions.Therefore, in research cabin, liquid rocking under given excitation is very necessary, and model test studies the reliable means of this problem.By model test, can observe the sloshing phenomenon of liquid in cabin comparatively all sidedly and obtain real time data, the test findings obtained can be used to the computational accuracy of Calibration Theory and numerical model.But current model test equipment can not provide a kind of active liquid tank oscillation simulation test device, this give simulation test within the specific limits under optional frequency and amplitude in Measurement accuracy cabin the impact of rocking of liquid bring difficulty.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of active liquid tank oscillation simulation test device is provided, liquid tank can be made to move under given excitation, and Real-Time Monitoring is carried out to the situation of rocking of liquid in cabin, thus understand ship motion to the impact of sloshing, can also stepless change be realized in addition, improve the precision of test.
Object of the present invention can be achieved through the following technical solutions:
A kind of active liquid tank oscillation simulation test device, it is characterized in that, comprise computing machine, sloshing assembly, resistance type wave height gauge and signal acquisition process device, described computing machine is connected with sloshing assembly, described sloshing assembly is fixedly connected with liquid tank, described resistance type wave height gauge is located in liquid tank, and is connected with computing machine by signal acquisition process device.
Described sloshing assembly comprises control box, pedestal, motor, rotation axis, slide block and guide rail, described computing machine is connected with motor by control box, described motor is installed on pedestal one end, described rotation axis to be installed in pedestal and to be connected with motor, described guide rails assembling is on pedestal, described liquid tank is positioned on guide rail, and described slide block set connects on the rotating shaft and embeds in guide rail, and described slider top is fixedly connected with tank bottom.
The high information of the wave of liquid free surface in cabin can be transferred to computing machine by signal acquisition process device by the resistance type wave height gauge of liquid tank inside, realizes facing survey in real time to liquid sloshing situation in cabin.
Described pedestal is provided with the groove for installing rotation axis.
Described rotation axis is shape of threads rigidity rotation axle, and this rotation axis is connected with a joggle by screw thread and slide block, rotation axis rotate time band movable slider and on liquid tank run together, the horizontal reciprocating movement amplitude of liquid tank and frequency can be set arbitrarily within the specific limits.
Described guide rail is horizontal guide rail.
The sloshing amplitude that described computing machine inputs according to experimenter and frequency calculate the rotational angular velocity of rotation axis and the counter-rotational time interval, and control motor by control box, make the rotation axis on pedestal realize this periodic reciprocating rotation.Now, engagement slide block thereon and the liquid tank be fixed thereon do the linear reciprocating motion relative to rotation axis axis under the guiding of guide rail, liquid in liquid tank starts to rock because of the periodicity positive motion of liquid tank, the resistance type wave height gauge record being located at its inside rocks the high information of wave of liquid, and transmitting it to computing machine, Computer display goes out the Free Surface real time data of liquid tank liquid sloshing.
Compared with prior art, the present invention can set liquid tank reciprocating cycle and amplitude arbitrarily within the scope of certain amplitude and certain frequency, and under this motion-activated, record the Free Surface real time data of liquid sloshing in cabin, thus understand ship motion to the impact of sloshing, can also stepless change be realized in addition, improve the precision of test.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of active liquid tank oscillation simulation test device, comprise computing machine 1, control box 2, pedestal 3, motor 4, rotation axis 5, slide block 6, guide rail 7, liquid tank 8, resistance type wave height gauge 9 and signal acquisition process device 10, described computing machine 1, control box 2 is connected successively with motor 4, described motor 4 is installed on pedestal 3 one end, described pedestal 3 is provided with a groove, described rotation axis 5 to be installed in groove and to be connected with motor 4, described guide rail 7 is installed on pedestal 3, described liquid tank 8 is positioned on guide rail 7, described slide block 6 to be socketed on rotation axis 5 and to embed in guide rail 7, described slide block 6 top is fixedly connected with bottom liquid tank 8, described resistance type wave height gauge 9 is located in liquid tank 8, and be connected with computing machine 1 by signal acquisition process device 10.Described rotation axis 5 is shape of threads rigidity rotation axle.Engaged each other by screw thread between described slide block 6 and rotation axis 5.Described guide rail 7 is horizontal guide rail.
First according to testing requirements, liquid is loaded to liquid tank 8, arrange and adjust each resistance type wave height gauge 9, liquid tank 8 is closed; Then in the control software design of computing machine 1, amplitude and the cycle (or frequency) of liquid tank 8 horizontal reciprocating movement is inputted according to testing requirements, control software design calculates the rotational angular velocity of rotation axis 5 and the counter-rotational time interval automatically according to the data of input, and order control software design starts test; The instruction that computing machine 1 sends exports motor 4 to by control box 2, makes rotation axis 5 carry out alternately rotating according to the angular velocity calculated and reversed time interval; Under the driving of rotation axis 5, engagement slide block 6 thereon and the liquid tank 8 be fixed on slide block 6 start to carry out horizontal reciprocating rectilinear motion under the guiding of guide rail 7; Meanwhile, the Free Surface real-time data record of liquid sloshing in liquid tank 8 is fed back to signal acquisition process device 10 by the resistance type wave height gauge 9 of liquid tank inside; Finally, result is transferred to computing machine 1 by signal acquisition process device 10, and computing machine 1 demonstrates the Free Surface real time data of liquid tank liquid sloshing, thus makes experimenter understand the impact of ship motion on sloshing.

Claims (4)

1. an active liquid tank oscillation simulation test device, comprise computing machine, sloshing assembly, resistance type wave height gauge and signal acquisition process device, described resistance type wave height gauge is located in liquid tank, and be connected with computing machine by signal acquisition process device, it is characterized in that, described computing machine is connected with sloshing assembly, and described sloshing assembly is fixedly connected with liquid tank;
Described sloshing assembly comprises control box, pedestal, motor, rotation axis, slide block and guide rail, described computing machine is connected with motor by control box, described motor is installed on pedestal one end, described rotation axis to be installed in pedestal and to be connected with motor, described guide rails assembling is on pedestal, described liquid tank is positioned on guide rail, and described slide block set connects on the rotating shaft and embeds in guide rail, and described slider top is fixedly connected with tank bottom;
First according to testing requirements, liquid is loaded to liquid tank, arrange and adjust each resistance type wave height gauge, liquid tank is closed; Then in the control software design of computing machine, amplitude and the cycle of liquid tank horizontal reciprocating movement is inputted according to testing requirements, control software design calculates the rotational angular velocity of rotation axis and the counter-rotational time interval automatically according to the data of input, and order control software design starts test; The instruction that computing machine sends exports motor to by control box, makes rotation axis carry out alternately rotating according to the angular velocity calculated and reversed time interval; Under the driving of rotation axis, engagement slide block thereon and be fixed on the liquid tank on slide block and start to carry out horizontal reciprocating rectilinear motion under the guiding of guide rail.
2. a kind of active liquid tank oscillation simulation test device according to claim 1, it is characterized in that, the high information of the wave of liquid free surface in cabin can be transferred to computing machine by signal acquisition process device by the resistance type wave height gauge of liquid tank inside, realizes facing survey in real time to liquid sloshing situation in cabin.
3. a kind of active liquid tank oscillation simulation test device according to claim 1, is characterized in that, described pedestal is provided with the groove for installing rotation axis.
4. a kind of active liquid tank oscillation simulation test device according to claim 1, is characterized in that, described guide rail is horizontal guide rail.
CN201310148125.4A 2013-04-25 2013-04-25 A kind of active liquid tank oscillation simulation test device CN103196652B (en)

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CN104266819A (en) * 2014-09-03 2015-01-07 河海大学 Device for simulating liquid sloshing generated under random wave action and wave generation method thereof
CN104406767B (en) * 2014-11-23 2017-08-25 大连理工大学 Structure changes formula c-type LNG sloshing pilot systems
CN104713696A (en) * 2015-02-04 2015-06-17 中国海洋石油总公司 Model test method for independent C-type LNG liquid tank
CN104655443B (en) * 2015-02-17 2017-06-09 中国海洋石油总公司 It is a kind of to simulate the apparatus and method that floating rocks condition
CN104764587B (en) * 2015-04-28 2017-10-13 中国石油大学(华东) A kind of sloshing experimental provision
CN105277335B (en) * 2015-10-26 2017-12-12 中国科学院力学研究所 The vibration testing device of liquid atmosphere interaction
CN105784320A (en) * 2016-03-24 2016-07-20 河海大学 Liquid tank sloshing experiment integration device and using method thereof
CN105806578B (en) * 2016-05-05 2018-12-25 哈尔滨工程大学 A kind of hydraulic actuation formula sloshing experimental rig
CN106441964B (en) * 2016-09-14 2018-10-02 中海石油气电集团有限责任公司 A kind of test platform of floating natural gas liquefaction system
CN110455479B (en) * 2019-08-07 2021-01-15 中国科学院力学研究所 Microstructure-damped cylinder vortex-induced vibration experimental device and simulation method
CN110615070A (en) * 2019-10-22 2019-12-27 浙江大学宁波理工学院 Rectangular liquid tank sloshing damping device and rectangular liquid tank hydrodynamic force calculation method

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