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1. 发明专利

JPH07137790A SLOSHING PREVENTING DEVICE 失效
公开(公告)号：JPH07137790A
公开(公告)日：1995-05-30
申请号：JP31283093
申请日：1993-11-19
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： HAYAMA SHINJI , MATSUDA HIROYUKI
IPC分类号： B65D90/52
摘要： PURPOSE:To provide an efficient and inexpensive device which can quickly suppress the sloshing occurring in the event of an earthquake, during transportation or in process of pouring liquid into a container. CONSTITUTION:A device, for preventing sloshing in a container, etc., storing liquid, is provided with an inner chamber 2 having an opening part 4a open toward the inside of the container to be treated for preventing sloshing, a check valve 5 for receiving only a liquid 7 flowing toward the inner chamber and an outlet hole 6a formed at the relatively lower part of the inner chamber to discharge the liquid taken in the inner chamber toward the container.

2. 发明专利

JPH06347304A IMPULSE-LIKE FLOW CHANGE PRODUCTION DEVICE 失效
公开(公告)号：JPH06347304A
公开(公告)日：1994-12-22
申请号：JP15631193
申请日：1993-06-03
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： HAYAMA SHINJI , MATSUDA HIROYUKI
IPC分类号： G01F15/06 , G01L11/00 , G01L11/04 , G01M7/02 , G01M99/00
摘要： PURPOSE:To exactly grasp pipe inside pulse characteristics with a gs reservoir of a specified volume, a pressurizing gas introduction means, a valve means for discharging gas in form of an impulse and a means for finding a gas flow history. CONSTITUTION:When a supply valve 4 is opened and the inside of a gas reservoir 1 reaches initial pressure, the valve 4 is closed. When a valve opening lever 11 is quickly turned under the condition where a discharge opening 5 is connected to piping and the like, the lever 11 overcomes a compression coil spring 9, lifts an valve opening claw 10 in a short time and is separated from the claw 10. Thereby, a stem 7 is lifted and a discharge valve 6 is opened. When the claw 10 is separated from the lever 11, the stem 7 quickly closes the valve 6 by force of the spring 9. As a result, since pressure of the gas reservoir 1 is lowered stepwise from the initial pressure to the pressure after release, a rate of pressure change in which it is differentially processed and gotten is in the form of a pulse. This signal has direct correlation with the flow discharged from the discharge opening 5, this is symbol-inverted, specified factor multiplication processing is performed and an impulse flow of gas which is allowed to flow in the discharge opening 5 can be found.

3. 发明专利

JPH06347320A IDENTIFICATION METHOD FOR ACOUSTIC CHARACTERISTIC IN PIPING SYSTEM AND CONTAINER 失效
公开(公告)号：JPH06347320A
公开(公告)日：1994-12-22
申请号：JP15631093
申请日：1993-06-03
申请人： CHIYODA CHEM ENG CONSTRUCT CO
发明人： HAYAMA SHINJI , MATSUDA HIROYUKI
IPC分类号： G01H17/00 , G01M7/02 , G01M99/00 , G01M19/00
摘要： PURPOSE:To determine pulsation characteristic in a tube accurately by applying impulse-like fluidity variations to measure a response in variations with time of pressure in an object to be identified. CONSTITUTION:Impulse-like changes in flow rate are caused in a piping by the injection of a compressed gas or the like at plurality of points Xj j=1-n) of a piping system 1. Here, as it is difficult to realize sufficiently ideal impulse- like flow rate changes, the injection of the compressed gas is performed with a known flow rate history or measuring the flow rate history to obtain a data necessary for a fast Fourier transform(FFT) analysis. Pressure changes eventually caused at a plurality of parts Xk (k=1-n) in the piping are detected and is given as input data of an FFT analyzer 2 together with data of impulse-like flow rate changes. Thus, a transmission function is determined equivalent to that which would be given when vibration is performed with respect to all frequencies equally, simply by applying an impulse-like flow rate change to the object to be identified.

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