Nakakita — 阀门液压遥控
阀门液压遥控
Instruction book for Nakakita's hydraulic remote valve control: butterfly valves on the main engine lube oil and ballast lines carry hydraulic cylinder actuators operated from a control unit in the engine room. A hand pump supplies the pressure; a manually operated 4-way valve per valve directs the oil to open or shut, and in-line flow meters show the open/shut position. The book describes the system, each component (4-way valve, relief combination pilot check valve, self-seal couplings with air purge), the butterfly valves and actuators, troubleshooting, safety and gasket handling.
点击模型上的零件，查看编号和用途。打开 3D 训练
保养规程
Operating a remote valve
- At the control unit set the 4-way valve of the required valve to OPEN or SHUT. 第 4 页
- Work the hand pump lever back and forth until the in-line flow meter shows the valve has moved fully. 第 4 页
- Return the 4-way valve to neutral. 第 4 页
Before maintenance on a valve actuator
- Make sure the pipe is depressurised and the valve is below 40 °C. 第 49 页
- Isolate power to solenoids and limit switches and shut off the hydraulic/air supply. 第 49 页
- Before opening a spring actuator, slacken the adjusting screw so the spring reaches free length. 第 49 页
保养周期
| 项目 | 周期 | 操作 | 说明书 |
|---|---|---|---|
| Line pressure, gland and gasket leaks | daily | Check gauge, tighten gland or flange if leaking | 第 67 页 |
| Connection bolts | every 3 months | Check and tighten | 第 67 页 |
| Gaskets, packing and seat | 1–2 years or at dry dock | Dismantle, inspect, renew | 第 67 页 |
故障及处理方法
技术参数
| Normal hydraulic pressure | 5.5 MPa (max 7 MPa, test 10.5 MPa) | 第 2 页 |
|---|---|---|
| Hydraulic oil | ISO VG 32 hydraulic oil (e.g. Shell Tellus 32, Mobil DTE 13M) | 第 3 页 |
| Valve stem | install horizontal where possible — vertical stems wear the lower bearing | 第 28 页 |
| Hot valve | do not touch above 40 °C without gloves | 第 49 页 |
来源：制造商说明书《EM-43-2 REMOTE CONTROL EQUIPMENT FOR M-E L.O AND BALLAST PIPE LINE》，共 97 页。页码以原文为准。作业前请核对船上的说明书。
本页为自动翻译。零件号、代码和页码与原文一致。