船用液控蝶阀节流调速系统的数字仿真(英文) |
| |
摘 要: |
|
Numerical simulation on a throttle governing system with hydraulic butterfly valves in a marine environment |
| |
Authors: | Hui-xiong Wan Jun Fang Hui Huang |
| |
Institution: | (1) Peter-Nickel-Str. 6, 69469 Weinheim, Germany |
| |
Abstract: | Hydraulic butterfly valves have been widely applied in marine engineering because of their large switching torque, low pressure
loss and suitability for large and medium diameter pipelines. Due to control problems resulting from switching angular speeds
of the hydraulic butterfly valve, a throttle-governing control mode has been widely adopted, and detailed analysis has been
carried out worldwide on the structural principle concerning speed-regulation and the load torque on the shaft while opening
or closing a hydraulic butterfly valve. However relevant reports have yet been published on the change law, the error and
the influencing factors of the rotational angular velocity of the hydraulic butterfly valve while opening and closing. In
this article, research was based on some common specifications of a hydraulic butterfly valve with a symmetrical valve flap
existing in a marine environment. The throttle governing system supplied by the accumulator to achieve the switching of the
hydraulic control valve was adopted, and the mathematical models of the system were established in the actual conditions while
the numerical simulations took place. The simulation results and analysis show that the rotational angular velocity and the
error of the hydraulic butterfly valve while switching is influenced greatly by the drainage amount of the accumulator, resulting
in pressure loss in the pipeline, the temperature of hydraulic medium and the load of the hydraulic butterfly valve. The simulation
results and analysis provide a theoretical basis for the choice of the total capacity of the accumulator and pipeline diameters
in a throttle governing system with a hydraulic butterfly valve. It also determines the type and specification of the hydraulic
butterfly valve and the design of motion parameters of the transported fluid. |
| |
Keywords: | |
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录! |
|