A leaking oil tanker split in two and sank Tuesday off Spain's northwestern coast, spewing thousands of tonnes of fuel oil into the sea and adding to a growing environmental disaster along one of Europe's most picturesque and wildlife-rich coasts. The two halves of the 26-year-old single-skinned vessel went down in deep

6.6 Coalescing bed-type oily water separators The coalesce is capable of forming oil globules up to l2 mm diameter and the heavier fuel oils usually form long 'stalagmites' which grow to a considerable size before they are released. Because of the 1ow velocities employed the collected oil can flow past the water screen without becoming re-entrained and carried through into the outlet

6.2 Pumping considerations Since the rate of separation depends on the oil globule size it will be appreciated that any disintegration of oil globules in the oily feed to the separator should be avoided and this factor can be seriously affected by the type and rating of the pump used. Tests were carried out by a British government research establishment some years ago on the suitability of various pumps for separator feed duties (Double vane, Triple screw and Single vane )

Cleaning, overhaul, lubrication. Satisfactory functioning cannot be ensured unless the parts in contact with liquid are carefully cleaned before assembly. This applies particularly to seal rings, sliding surfaces, guiding and contact surfaces, and threads. Also take care that no burrs are knocked up on the metal parts when handling them. Follow the directions given in chapter 5.4 and 4.5

0644液压传动的动力元件通常是指 A.油泵B.油马达C.油缸D.A+B0645液压马达是将能变为能。 A.电,液压B.液压,机械C.机械,液压D.电,机械

1.结构简单,易操作; 2.流量大,流量均匀; 3.重量轻,运动部件少,转速高; 4.泵送的液体粘度范围广; 5.无自吸能力

1.叶片泵的分类 作用数一一单作用、双作用叶片泵泵级单级、双级叶片泵可否变量一一定量式、变量式

相似理论的意义: 了解泵在改变n或线性尺寸时性能参数变化关系;用它来推导出离心泵的相似准则数比转数,作为对离心泵的分类

一、气蚀现象及危害 低压区→产生气泡→高压区→气 泡破裂→产生局部真空→水力冲 击→发生振动、噪音,对部件产 生麻点、蜂窝状的破坏现象

第一节舵的作用原理和对舵机的要求 第二节液压舵机的工作原理和基本组成 第三节液压舵机的转舵机构 第四节液压舵机的遥控系统 第五节舵机液压系统实例 第六节液压舵机的管理