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| 个人信息 |
| 姓 名： |
姚译员 [编号]:436 |
性 别： |
女 |
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| 擅长专业： |
外贸英语 |
出生年月： |
1984/10/1 |
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| 民 族： |
汉族 |
所在地区： |
浙江 宁波 |
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| 文化程度： |
大专 |
所学专业： |
外贸英语 |
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| 毕业时间： |
38878 |
毕业学校： |
宁波工程学院 |
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| 第一外语： |
英语 |
等级水平： |
六级 |
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| 口译等级： |
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工作经历： |
3 年 |
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| 翻译库信息 |
| 可翻译语种： |
英语 |
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| 目前所在地： |
浙江 宁波 |
| 可提供服务类型： |
笔译、家教 |
| 每周可提供服务时间： |
每天都可以 |
| 证书信息 |
| 证书名称： |
大学英语六级 |
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| 获证时间： |
2004/6/1 |
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| 获得分数： |
419 |
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| 工作经历 |
| 工作时期： |
2006/2/1--2007/6/1 |
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| 公司名称： |
宁波惠康国际工业有限公司 |
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| 公司性质： |
其它 |
| 所属行业： |
采购/贸易 |
| 所在部门： |
国际贸易部 |
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| 职位： |
外贸业务助理 |
| 自我评价： |
工作认真负责 |
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| 笔译案例信息 |
| 案例标题： |
涡轮机进气阀 |
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| 原文： |
3 TURBINE INLET VALVE
3.1 Scope of Work
This section covers the furnishing and installation of inlet valve including all accessories, by pass valve, hydraulic operating mechanism, foundation bolts etc. required for the project.
3.2 Type
Inlet valve: Spherical type.
Bypass valve: Pressure oil operated needle valve or sluice valve.
3.3 Design Characteristics
1) Flow Capacity
The valve shall have sufficient capacity to allow maximum discharge of 1.75 m3/s.
2) Design Strength
The valve shall be designed to withstand the maximum hydraulic pressure of 300 m and shall be free from vibration and any abnormality under the whole operating range of turbine including any transient conditions of operation.
Hydrostatic test pressure shall be 330 m.
3) Diameter
The valve diameter shall be determined by the bidder.
4) Full Flow Shut-Down
The valve shall be so designed as to be capable of closing from fully opened position under the conditions of maximum flow at any head. Furthermore the valve shall be capable of closing safely and completely against full unbalanced flow occurring as a result of a burst of the downstream sided piping within the valve chamber.
5) Operating Time
The opening and closing time shall not exceed 150 seconds and shall be adjustable.
6) Leakage
Amount of leakage passing through the gaps shall not exceed the amount of 5 liters per minute under the static head of 300 m. The valve shall be designed for repacking without disassembly of any of their major parts.
3.4 Description
The turbine valve shall be of the spherical type with hydraulic operated maintenance seal. The valve diameter will be suitable to the turbine inlet diameter.
The valve shall be used to shut off water in case of turbine breakage and to permit access to the turbine.
The valve will be supported on concrete pedestals and secured by anchor bolts.
3.5 Control
Control of each inlet valve shall be hydraulic through oil under pressure.
The spherical valve shall be oil operated servomotor with closing weight, guaranteeing the closing of the valve against the maximum discharge and maximum head.
The following modes of control shall be provided for:
• Manual remote from the control room
• Automatic is part of the automatics for starting-up and stopping of the respective generating set.
The controls shall be so arranged that the motion of each inlet valve can be reversed at any time during the opening or closing stroke.
3.6 Requirements for Construction and Materials
3.6.1 Valve Body
The valve body will house the bearings for the trunnions of the rotary body. The valve body will comprise also the necessary stuffing boxes for the trunnions, connecting sockets for the filling, relief, control, scavenging and drainage piping.
3.6.2 Rotary Body
It will be designed for single piece cast steel with cast on trunnions.
3.6.3 Operating Sealing Plate
It shall be made of cast steel and welded on seat cladding of corrosion resistant material.
3.6.4 Maintenance Sealing Device
It shall be in the valve body, at the upstream end, consisting of sealing ring of springs pressing the ring against the rotary body and of spindles with guide bushes.
3.6.5 Drive for Actuation of the Rotary Body
It shall be arranged on the floor, for opening by controlled pressure oil and closing by uncontrolled pressure water from the penstock.
The drive will consist of water closing cylinder, sand trap, intermediate cover oil cylinder, double piston, adjusting rod, adjusting lever and draw rod, including seals, seepage water drain, seepage oil drain, screws and bolts as well as other accessories.
3.6.6 Hydraulically Controlled Slide Valves
One (1) hydraulically controlled slide valve, with connection pipes, relief valve for relieving of the operating sealing plate shall be provided.
3.6.7 Shut off Valves
Two shutoff valves for filling of the spherical valve before opening of the maintenance seal, one thereof provided as shut off element while the other valve being serviced, the movable, water-contacted parts and sealing seats made of rust proof material shall be provided.
3.6.8 Dewatering Piping
Nominal diameter 100 mm, with drainage pipe shall be provided.
3.6.9 Operating Mechanism
1) The spherical valve will be hydraulically operated by means of a servomotor, closing will be effected by pressure water, opening by pressure oil.
The valve driving servomotor will be fastened an on the foundation by way of a plate cast onto the servomotor casing. Apart from automatic control, the spherical valve shall also be actuated by a manual control device. The pressure oil required for actuation of the valve shall be taken from a pressure oil supply plant.
2) Electro-hydraulic control system shall be designed for operation by hand or by electro magnet and shall mainly consist of:
• One (1) control valve with electro magnet and lever,
• One (1) blocking valve (accommodated in the oil supply plant)
• One (1) change-over valve
• One (1) overflow valve
• One (1) sand trap and shut off valve with flange connections, seals and bolts
3.6.10 Bypass valve
A bypass line shall be provided for filling the space between the valve and the turbine gates. This nominal diameter 150 mm line will be provided with a hydraulically actuated filling valve nominal diameter 150 mm and a closing valve for inspection and maintenance.
The bypass valves shall be made of cast steel with wear parts of corrosion resisting material.
The bypass piping shall be of steel with steel flanged connections. The necessary bolts and gaskets for a complete installation shall be furnished.
3.6.11 Limit Switches and Transmitters
Each inlet valve shall be provided with the following limit and intermediate switches:
• One (1) limit switch for the fully open position of the valve.
• One (1) limit switch for the fully closed position of the valve.
• One (1) intermediate switch initiating starting-up of the oil pumping unit when the rotary body has departed by approx. 6º from its fully open position.
• One (1) intermediate switch initiating alarm when the rotary body has departed by approximately 12º from its fully open position.
• One (1) intermediate switch provoking shutdown of the respective generating set when the rotary body has departed by approx. 18º from its fully open position.
All transmitters, contacts, etc., for remote operation and indication of the valves shall be included in the supply.
Remote control will be performed from the control room. The required remote control and indicating apparatus and the wiring between the apparatus and the local control board will be furnished by the Contractor.
3.6.12 Upstream Piping
Each inlet valve shall be provided with an upstream pipe of welded plate steel construction. It shall be straight, has a length of approximately 1000 mm.
The downstream end shall be equipped with a flange matching properly the upstream flange of the valve body. Its upstream end shall be for site welding onto the penstock lining, and have, therefore, an allowance in length of approximately 200 mm.
The following take-off, taps, etc. shall be provided on each upstream pipe:
• One (1) take-off 150 mm. inside diameter with one (1) shut-off valve for drainage. (to be installed in the immediate vicinity of the drainage take-off)
• One (1) for measuring the pressure upstream of the valve whereby the piping leading up to the respective pressure gage shall be included in the supply,
• One (1) take-off 150 mm. inside diameter for bypass piping.
The supply shall include also all necessary bolts, nuts, screws, packing, jointing material, etc.
3.6.13 Downstream Piping
Each inlet valve shall be provided with a downstream pipe of welded plate steel construction. It shall be straight, has a length of approximately 1000 mm. The upstream end shall be equipped with a collar flange and loose intermediate flange so as to ensure a telescopic fitting of the valve body and downstream pipe. Its downstream end shall be for site welding onto the spherical valve/turbine connecting piping and have, therefore, an allowance in length of approximately 200 mm.
The following take-off, taps, openings, etc. shall be provided on each downstream pipe:
• One (1) take off 150 mm. inside diameter with one (1) shut-off valve (to be installed in the immediate vicinity of the drainage take-off)
• One (1) for measuring the pressure downstream of the valve, where by the piping leading up to the respective pressure gage shall be included in the supply.
• One (1) take-off 150 mm. inside diameter for bypass piping.
3.6.14 Oil Piping
The piping shall be iron-pipe-size seamless steel, with long radius type bends used in place of elbow fittings where feasible.
All piping shall be thoroughly cleaned, oiled inside and protected for shipment with wooden flange protectors on all flanges, screwed corps on threaded ends and suitable plugs in plain ends.
3.6.15 Wiring
The necessary electrical wiring between the valve and control desk of control room shall be furnished.
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| 译文： |
1.1工作范围
本节包括提供和安装项目所需的进水阀门，包括所有配件，旁通阀，液压运行机制，基础螺栓等
1.2类型
进气阀门：球形类型。
旁通阀：需压力油操作的针形阀或闸阀。
1.3设计特点
1 ）流量
该阀须有足够的流量，允许最大值为1.75立方米/秒
2 ）设计强度
阀门的设计应能承受的最高水压为300米，在整个运行范围内的涡轮包括操作的任何瞬变条件，应不受任何异常振动和反常情况的影响。
水压试验压力应为330米
3 ）直径
阀门直径应视投标人而定。
4 ）全流完全关闭
该阀的设计，须能够在任何开头并在流量最大的情况下，关闭完全打开的位置。此外，由于在阀室内的下游面管道突然打开，阀门应能安全关闭和应对完全不平衡流动的发生。
5 ）操作时间
开始和结束时间不得超过150秒，应调整。
6 ）泄漏
在300米静态下，通过缺口泄漏的数额总数不得超过5升/分钟。阀门的设计应为在没有任何拆卸的主要部分的重新包装。
1.4说明
汽轮机阀门应球形型液压操作维修印章。阀门的直径将是合适的涡轮入口直径。
该阀应采用关闭供水情况下的涡轮破损，并允许进入涡轮机。
该阀将支持对混凝土基座和担保锚杆。
1.5控制
控制每个入口阀应通过液压油的压力。
球形阀要是油操作的变速装置，有精准的重量，在最大流量和最高顶点下保证阀的密封性。
下面的方式控制须为：
•手动远离控制室
•自动化是各自的发电装置的开始和停止自动的一部分。
控件须有计划，在开启或关闭的任何时候，使每个进气阀可以翻转运动。
1.6建造和材料要求
1.6.1阀体
阀的主体会承载用于旋转体耳轴的轴承。阀体将包括必要的耳轴的填料函，以及用于填充，减压，控制，清除和排水管道的连接插座。
1.6.2旋转体
这将是专为单件铸钢铸造的耳轴
1.6.3操作密封板
它应由铸钢和焊接覆层的耐腐蚀材料组成。
1.6.4维护密封装置
它应该在阀体里面，在上部的底端，由旋转体相对的弹簧密封圈，和带有衬套的锭子组成。
1.6.5旋转体的驱动调节驱动器。
它应该安置在地上，因为它是由受控制的油压力来打开，以未受控的的水压力关闭的。
发动机由水闭合模缸，分沙器，中间涂油缸，双活塞，调整杆，控制杆，拉杆组成，包括了封铅，排水管，排油管，螺丝和其他配件。
1.6.6液控滑阀
需有一个（ 1 ）液压控制的滑阀与连接管，安全阀，以减少操作密封板的困难。
1.6.7关闭阀门
两堵阀填补球阀，在开启维修封条之前，当其他阀提供服务时其中一个原件要关闭，活动的水接触部件和密封部件需由抗锈材料组成。
1.6.8脱水管道
需要通称直径100毫米的排水管。
1.6.9操作机械装置
1 ）球形阀将液压通过伺服电机，关闭将受水压影响，开启将受油压影响。
在变速器的外部加个电镀铸件可以把阀的驱动变速装置固定在地基上。脱离自动控制，球形阀也可以用手动装置操作。阀的操作需要的压力油来源于压力油厂。
2 ）电液控制系统的设计应以手工操作或电磁铁，并应主要包括：
•一个（ 1 ）控制阀电磁铁和杠杆，
•一个（ 1 ）闭塞阀（适应在石油供应厂）
•一个（ 1 ）转换阀
•一个（ 1 ）溢流阀
•一个（ 1 ）分沙器和用凸缘连接，密封件和螺栓关闭阀门
1.6.10旁通阀
绕行线须为填补阀和涡轮盖之间的空间。这种通称直径150毫米的生产线将有一个液压驱动进油阀通称直径150毫米和一个用于检查和维修的隔离阀。
旁通阀应由铸钢与磨损件的耐蚀材料组成。
旁路管道须用钢法兰连接。为一个完整的安装需提供必要的螺栓和垫圈。
1.6.11限位开关和发射机
每个进气阀须提供下列限制和中间开关：
•一个（ 1 ）阀门完全打开的限制开关
•一个（ 1 ）阀门完全关闭的限制开关
•当旋转体在完全打开状态下接近约6 º的时候，一个（ 1 ）油泵中间开关开始运行
•当旋转体在完全打开状态下接近约12 º的时候，一个（ 1 ）中间开关启动报警
•当旋转体在完全打开状态下接近约18º的时候，一个（ 1 ）中间开关会关闭各自的发电机组
所有的发射机，接触物等，用于远程操作和阀门指示的应包括在供给里面。
远程控制将从控制室执行。所需要的远程控制和显示设备以及设备和局部控制板之间的配线将由承包商提供。
1.6.12上游管道
每个进气阀须设有一个上游管道焊接钢板建造。它应直，长度约1000毫米。
下游末端应配备一个适当的凸缘来匹配上游阀体的凸缘。其上游末端，应在焊接钢管内部，因此，公差长度约200毫米。
每个下游管道应提供以下起飞，塞子，开口等：
•一个（ 1 ）150毫米的内径与一（ 1 ）切断阀（安装在排水管道附近）
•一个（ 1 ）用于测量下游阀压力，凡管道导致各自压力的测量仪器。
•一个（ 1 ）旁道管的内直径为150毫米
供应也应包括所有必要的螺栓，螺母，螺钉，包装，焊接材料等
1.6.13下游管道
每个进气阀须设有下游管道焊接钢板建设。它应直，长度约1000毫米。在上游底部应配备一个环形凸缘和松散的过渡法兰，以确保阀体和下游管道的伸缩装置。其下游末端应是焊接在球阀/涡轮机连接管道上，因此公差长度约200毫米。
每个下游管道应提供以下起飞，塞子，开口等：
•一个（ 1 ）150毫米的内径与一（ 1 ）切断阀（安装在排水管道附近）
•一个（ 1 ）用于测量下游阀压力，凡管道导致各自压力的测量仪器。
•一个（ 1 ）旁道管的内直径为150毫米
1.6.14石油管道
在可行的情况下管道应铁管尺寸无缝钢管，长型弯曲半径用于肘部配件。
所有的管道，应彻底清洗，保护装运的木质凸缘保护装置，在有线状图形末端安装螺纹和在平整的底部安装适当的插头。
1.6.15线路
阀门和控制室的控制台之间必要的电线必须提供
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