Media Coverage
Simulation of discharge check system of pipeline using variable constant
flow valve
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Transaction of the Japanese Society of Irrigation, Drainage and Reclamation
Engineering
No. 203, published on Oct. 25, 1999 |
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Reprinted from Transaction of the Japanese Society of Irrigation, Drainage
and Reclamation Engineering No. 203 |
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Simulation of discharge check system of pipeline using variable constant
flow valve
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Hitone Inagaki
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Research Student of the United Graduate School of Agricultural Sciences,
Kagoshima University
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Kunio Ogura
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Yokota Mfg. Co., Ltd.
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Yoshihiro Terakawa
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Crown Engineering Co., Ltd.
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Fumiyoshi Kondo
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Faculty of Agriculture, Miyazaki University
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Abstract (Original text)
It is becoming more difficult to provide adequate distribution of water,
because the water pipeline systems are covering increasingly wider areas.
Therefore, a mechanism is needed that will control pipeline systems to
maintain constant pressure and discharge. To solve this problem, a variable
constant-flow valve has been developed that is capable of controlling and
changing pipeline discharge. The performance of the valve has been tested
to verify its function. The operating mechanism of the variable constant-flow
valve is based on the equation of motion. A mathematical model of the valve
was created, and the test results were simulated to check its basic functions.
Also, for assuming high-pressure closed pipelines, a simulation was conducted
to check how the distribution of flow is affected when one junction in
a pipeline is dominant and controls the flow through the entire pipeline
system. In addition, the valve's performance was verified by placing it
at an upstream junction and changing the pipeline pressure from up- and
down-stream on the valve. This test confirmed that the valve maintained
a constant, regardless of any pressure fluctuations, and that the discharge
check system functioned properly.
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Key words:
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Variable constant flow valve, Pipeline, Discharge check system, Mathematical
model, Simulation
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For details of this Variable constant flow valve, please refer to
Constant Flow Regulator Valve UF series. |
