Effects of throttling structures on cavitation flow and circumferential uniformity in a control valve

The use of ultra-high molecular weight polyethylene (UHMW PE) for the manufacture of various parts, in particular cuffs for hydraulic drives, is proposed. The properties and advantages of UHMW PE in comparison with other polyethylene materials are considered. Keywords ultra-high molecular weight polyethylene, hydraulic pump, hydraulic motor, hydraulic control valve, hydraulic oil, low temperature. [email protected]

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Failure analysis on the bolt fracture of pressure control valve in power plant

2020 5th International Conference on Mechanical, Control and Computer Engineering (ICMCCE) ◽

10.1109/icmcce51767.2020.00174 ◽

2020 ◽

Author(s):

Jun Si ◽

Huating Lv ◽

Facai Ren ◽

Bin Ren

Keyword(s):

Power Plant ◽

Failure Analysis ◽

Control Valve ◽

Pressure Control ◽

Pressure Control Valve

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Selecting a Control Valve for a Given Service

Measurement and Control ◽

10.1177/002029408501801003 ◽

1985 ◽

Vol 18 (10) ◽

pp. 380-389

Author(s):

H Orr ◽

N Papoutsis

Keyword(s):

Control Valve

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Mechanical Damage Assessment for Pneumatic Control Valves Based on a Statistical Reliability Model

Sensors ◽

10.3390/s21103307 ◽

2021 ◽

Vol 21 (10) ◽

pp. 3307

Author(s):

Nirbhay Mathur ◽

Vijanth Sagayan Asirvadam ◽

Azrina Abd Aziz

Keyword(s):

Weibull Distribution ◽

Reliability Assessment ◽

Mechanical Damage ◽

Control Valve ◽

Reliability Models ◽

Statistical Reliability ◽

Processing Plants ◽

Simulated Process ◽

Pneumatic Control Valves ◽

Log Normal

A reliability assessment is an important tool used for processing plants, since the facility consists of many loops and instruments attached and operated based on other availability; thus, a statistical model is needed to visualize the reliability of its operation. The paper focuses on the reliability assessment and prediction based on the existing statistical models, such as normal, log-normal, exponential, and Weibull distribution. This paper evaluates and visualizes the statistical reliability models optimized using MLE and considers the failure mode caused during a simulated process control operation. We simulated the failure of the control valve caused by stiction running with various flow rates using a pilot plant, which depicted the Weibull distribution as the best model to estimate the simulated process failure.

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