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CENTRIFUGAL COMPRESSOR OPERATION & MAINTENANCE TRAINING COURSE
TEST
离心压缩机运行&维护培训课程测试
Please score off the right answer, and/or give information required by hand writing in capitals letters.Thanks
请勾出正确的答案，或者手写大写字母回答相关问题。谢谢合作。
1.What is the position of the Suction and discharge nozzles on a PCL’s casing? 进气与排气
管口在PCL压缩机机匣的什么位置？
a.On the sides侧面
b.On the top 顶部
c.On the bottom 底部
2.What is the term for the highest speed capacity on a performance curve? 在性能曲线上的最大速度被称为？
a.maximum continuous speed 最大持续速度(MCS)
b.surge point 喘振点
c.turndown range 调节范围
d.stability range 稳定范围
3.What component increases only the preure of the gas in a centrifugal compreor? 在离
心压缩机内部仅仅增加气体压力的部件为？
a.Impeller 叶轮
b.Diffuser 扩散器
c.Volute 集气管
4.What component increases both the velocity and the preure of the gas in a centrifugal
compreor? 在离心压缩机内部，哪个部件同时增加气体的速率和压力？
a.Return Channel 返回通道
b.Impeller 叶轮
c.Diffuser 扩散器
d.Volute 集气管
5.What component compensates the major part of axial thrust? 哪个部件能够抵消大部分的轴向推力？
a.journal bearings 轴颈轴承
b.balance drum 平衡鼓
c.thrust bearings 止推轴承
d.labyrinth seals 迷宫密封件
6.Each journal bearing is attached to two probes.What do the two probes monitor? 每一个
轴颈轴承都安装两个探针。这两个探针检测何种参数？
a.axial displacements 轴向位移
b.magnetic displacements 磁位移
c.radial vibrations 径向震动
7.The impellers of a centrifugal compreor add energy to the gas.离心压缩机的叶轮能够增
加 气体的能量。
a.True 是
b.False 否
8.What is the function of the thrust collar? 止推环的功能是什么？
a.fix the balance drum to the shaft 将平衡鼓固定在轴上
b.transmits the rotor thrust to the thrust bearings 将转子的推力转移到止推轴承上
c.fix the coupling hub to the shaft 将连接器的端头固定在轴上
9.Which type of seal is used to minimize leakage flow between compreion stages?在压缩
级之间使用哪种密封件将气体泄漏最小化？
a.dry gas seals 干气密封
b.labyrinth seals 迷宫式密封
c.oil film seals 油膜密封
10.Which is the result of an exceive clearance of the labyrinth seal on the balance drum? 如
果在平衡鼓上的迷宫式密封的间隙过大导致的结果是什么？
a.increase in the thrust toward the suction side 增加在进气口端的推力
b.decrease in the temperature of the thrust bearing pads 降低止推轴承瓦块的温度
c.decrease in the temperature of the gas 降低气体温度
d.increase in the thrust toward the discharge side 增加在排气口端的推力
11.Why are tertiary seals preurized when starting a compreor with a dry gas seal system?
在启动压缩机的时候为什么要用干气密封系统对第三级密封件进行加压？
a.to prevent surge 防止喘振
b.to reduce start-up time 减少启动时间
c.to prevent the lube oil from contaminating the dry gas seals 防止润滑油污染干气密
封件
d.to remove oxygen from the system 去除系统中的氧气
12.True or false, the lube oil system can be shutdown before the compreor stops.在压缩机
停止之前可以关闭润滑油系统。
a.True 是
b.False 否
13.The diaphragm is divided into operating sections.What are the diaphragm sections called?
隔膜被分为一些不同的部分。这些被称为什么？
a.impeller, suction, and discharge sections 叶轮，进气口和排气口
b.intermediate, impeller, and discharge sections 中间体，叶轮和排气口
c.discharge, suction, and inlet sections 排气口，进气口与入口
d.suction, intermediate, and discharge sections 进气口，中间体，排气口
14.Which of the following statements describes a compreor journal bearing? 下列哪一个正
确地描述了压缩机的轴颈轴承？
a.This is a hydrodynamic type bearing with tilting pads.含有倾斜瓦块的水压型轴承
b.Pads pre against the leveling bars.瓦块低压平整杆。
c.Grooves in the pads allow oil to flow directly onto each pad.瓦块上的凹槽允许润
滑油直接流到每一个瓦块上。
15.What kind of Thrust bearing is usually installed on Nuovo Pignone Centrifugal
compreors? 在新比隆离心压缩机上一般安装的是何种止推轴承？
a.Flooded 浸泡式
b.Direct lubricated 直接润滑式
16.What is the function of the spacers in a centrifugal compreor? 离心压缩机内部间隔器的功能是什么？
a.determine the axial position of each impeller 确定每一个叶轮的轴向位置
b.reduce the effects of any unbalance in the impeller 减少叶轮任何不平衡早晨的影
响
c.permit that the gas goes in conctat with the shaft 允许气体与轴接触
17.The only function of the lube oil system is to maintain the oil film characteristics in order
to cool the bearings.润滑油系统的唯一功能是维持油膜的特征以对冷却轴承。
a.True 是
b.False 否
18.Which list below matches the proper order for the flow of oil through the lube oil system?
下列答案哪一个为润滑油系统中正确的流向？
a.Coolers, filters, pumps, compreor 冷却器，过滤器，泵，压缩机
b.Compreor, coolers, pumps, filters 压缩机，冷却器，泵，过滤器
c.Pumps, coolers, filters, compreor 泵，冷却器，过滤器，压缩机
d.Coolers, pumps, filters, compreor冷却器，泵，过滤器，压缩机
19.Dry gas seals are used to: 干气密封件用来：
a.increase compreor efficiency 提高压缩机的效率
b.create lift by forming a layer of gas between the shaft and bearings 在轴和轴承之间
形成一个气层提供升力
c.avoid leakage of proce gas 避免工艺气体的泄露
20.Depreurized emergency shutdown can happen in only one case that is? 降压紧急停机仅
仅可以在哪种情况下发生？
a.High bearing temperature 高轴承温度
b.Very high radial vibrations 非常高的径向震动
c.Very high preure on dry gas seals primary vent干气密封主通气管上非高地压力 d.Very high axial displacement 非常高的轴向位移
21.The purpose of the tertiary seal in the shaft end seal system is to prevent...在轴端密封系
统的第三级密封件的目的是防止...a.lube oil contamination of the dry gas seals.润滑油污染干气密封件
b.proce gas contamination of the dry gas seals.工艺气体污染干气密封件
c.barrier gas contamination of the dry gas seals.阻气污染干气密封件
d.buffer gas contamination of the dry gas seals.缓冲气体污染干气密封件
22.Major maintenance involves acceing which internal parts of the compreor? 大修设计
到压缩机的哪些内部组件？
a.piping, foundation bolts, and couplings 管道、地脚螺栓、连接器
b.rotor, diaphragm bundle, and internal labyrinth seals 转子、隔膜套件、内部迷宫
式密封件
c.probes and thermoelements 探针和热电元件
d.casing bolts and casing covers 机匣螺栓和机匣盖板
23.What is the definition of minor maintenance?小修的定义是什么？
a.maintenance that does not require opening the casing or diaphragm bundle 不要求打
开机匣或者隔膜套件的检修
b.precautionary actions that occur at prescribed inspection intervals 在规定检查间隔
时间内采取的预防措施
c.periodic inspection of the internal parts 内部组件的定期检查
24.The antisurge valve is fully open until 防喘振阀会完全打开直到
a.The compreor reaches the operating point speed 压缩机到达工况点速度
b.The compreor reaches the Minimum Operating Speed 压缩机到达最小工况速度 c.The compreor reaches the Maximum Continous Speed 压缩机到达最大持续速度
25.What is the duty of the Antisurge valve 防喘振阀的职责是
a.Recycle flow in order to keep the operating point in a safe area 循环流量以使工况
点保持在安全区域
b.Reduce the preure of the gas that goes into the suction 减少进气口气体的压力
c.Trip the machine in case of surge 在喘振发生时制动机器
Trainee Name & Surname 姓名_______________________________
Dept.部门________________________
Date 日期____________
Signature签名_______________________________
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