原文：
          一、前言　　上海市是一座十分繁华的大型现代化城市，其发展目标是建设成为国际经济、金融、贸易中心，这就要求本市必须有一个丰裕的水资源和优越的水环境与其地位相适应。

　　但是，由于各种条件的限制，本市对生活污水、工业废水和雨水不能做到完全分流制，受污染的水体还不能达到全部净化，污染源还不能全部控制。然而，可用污水泵站来输送、拦截生活污水、工业废水。本市的污水泵站对控制和改善本市的水污染起到了关键的作用。在本市的污水泵站（如武川泵站等）中，常用的ＭＦ（ＭＮ）泵缺点日渐明显，维修安装准确度较低，噪音大，日常管理保养工作量大，甚至产生有毒有害气体，危及人身安全等；同时，由于泵产生故障而不得不停止输送、离心泵拦截辖区内的污水，可能完不成生产指标，将直接影响单位的经济效益和社会效益。　　随着制泵业科学技术的突飞猛进，一种由新材料、新结构、新工艺制成的大型潜水污水泵可完全替代原来的ＭＦ（ＭＮ）泵机，其发展趋势迅猛。如目前常用的ＦＬＹＧＴ－Ｃ（飞力）泵，是含有一定科技手段且质量稳定的大型潜水污水泵，受到了广大工程技术人员和泵站管理人员的普遍欢迎。

 　　二、ＦＬＹＧＴ－Ｃ泵替代ＭＦ（ＭＮ）试压泵泵的基本条件是两种泵的共同点

　　１．上述两种泵的流量与扬程性能曲线、流量与功率性能曲线、流量与效率性能曲线基本相似。

　　２．上述两种泵的抽送介质（水）温度、口径、流量、扬程、电压、功率、地面控制板等均有相同之处。

 　　三、ＦＬＹＧＴ－Ｃ泵替代ＭＦ（ＭＮ）泵的优越点是其特有的高科技含量　

　１．ＦＬＹＧＴ－Ｃ泵在结构设计、工艺制作上比ＭＦ（ＭＮ）泵更科学、合理　　ＭＦ（ＭＮ）泵有电机轴、轴承箱、水泵轴、联轴器等多种传动单元组成，其轴用不锈钢镶套。电机运行时主要靠风叶来冷却，长期运行，冷却效果差。运行过程中，电机自身无保护，需通过地面上的控制柜实行。若电机长期停止运行，容易受潮影响绝缘。在运行过程中，泵通常采用机械密封和填料密封，机械密封需引水，否则稍有不慎将损坏水泵；填料密封由于全天连续运行而容易发热软化，需要经常更换。泵体与叶轮防腐工艺落后，耐腐蚀性能较差，表面十分粗糙。

　　ＦＬＹＧＴ－Ｃ泵的电机轴和水泵轴共用一根，泵轴是电机轴的延伸，用不锈钢质材制成。两只轴承在整只潜水泵内。泵浸没在水中工作，它靠周围环境及泵送的介质获得足够的冷却，无须外部冷却系统。泵的定子线圈浸入Ｆ级绝缘漆３次和烘烤３次，在定子线圈中装入热敏开关，与电机过载保护、油泄漏保护通过传感器连接在地面控制柜上。电机电缆进线密封性能特强，它用一个圆柱形高弹性衬套、外垫圈组成，衬套能被电缆进线室挤压并消除拉力和一定的扭矩，此进线装置保证能方便地替换损坏的电缆，而不采用环氧、硅胶或其它二次密封。泵的密封性能自有其独特之处，它有上下双重独立的串接的机械密封组成：下密封（第一密封）位于泵壳与油室之间，卫生泵由一个静环和一个正向旋转的耐腐蚀碳化钨动环组成；上密封（第二密封）在油室与电机之间，由一个陶瓷静环和一个正向旋转的碳动环组成。两个密封的分界面由自身的弹簧系统连接，该机械密封能在顺时针与逆时针转动时，不损坏密封元件，无须维修与调节。泵的外部与泵送介质的金属表面均喷防腐漆。在蜗壳与叶轮吸入口之间装有耐磨环，由涂有晴橡胶的钢铁或黄铜制成，从而保证了蜗壳与叶轮吸入口之间的有效密封。

　　２．ＦＬＹＧＴ－Ｃ泵的安装比ＭＦ（ＭＮ）泵更简单、快速　　ＭＦ（ＭＮ）泵在建设时，需建造一个偌大的水泵间，安装上下扶梯、照明设施、通风设施、沉水泵、井及其它辅助设备和设施等。在安装时必须使泵的基础坚实，决不允许把泵本身作为管路的支撑点，承受管路的重量。值得一提的是：泵与传动轴精确对中，如果用填料密封时，两个连轴器的径向和轴向偏差不得大于０．１毫米，由于长期运行后，基础（三角铁架子）逐渐松动、腐蚀，使该泵在维修后的安装有一定难度。　　ＦＬＹＧＴ－Ｃ泵在建设和改造中，没有ＭＦ（ＭＮ）泵所需的水泵间内的辅助设备和设施，大大减少了土建资金和时间，减少了辅助设施的资金和安装时间，这是诸如ＦＬＹＥＴ－Ｃ泵等大型潜水污水泵之所以能替代ＭＦ（ＭＮ）泵的最大优势之一。ＦＬＹＧＴ－Ｃ泵安装简单，潜水泵在不少于两根平行导杆的引导下，从泵坑顶部到排水连接座自由滑下，并且能自动地与排水连接座连接，不需要安装工人下井进行安装和检修。泵与排水连接座的密封完全是金属与金属的接触，不需要用膜、Ｏ型环或垫圈形式的排水密封。泵机的全部重量由泵的排水弯道和泵机专用提升链承担，提升链承担的负载为总重量的两倍，确保了稳固。　　３．ＦＬＹＧＴ－Ｃ泵在运行管理中比ＭＦ（ＭＮ）泵更安全、轻松　　ＭＦ（ＭＮ）泵在运行前，有严格的操作规程，如先开启进水闸阀、打开放气拷克、放尽泵内空气、盘动联轴器、检查联轴器的间隙等。泵在运行时，必须采用“勤看、勤嗅、勤摸、勤听”来辨别泵的运行情况，必须经常行走于高陡的上下水泵间扶梯，尤其是如果一个女同志当班，潜在的畏惧感多少会影响安全工作和日常管理质量。泵在运行时，噪声大、振动大，严重妨碍了泵站管理人员的巡视、休息。泵的油箱必须每星期加注一次润滑脂，其轴承绝对不能在无润滑脂的情况下运行，否则，产生噪音，轴承发热，严重时损坏轴承，迫使泵机停止运行。泵由于全天２４小时连续运行，深井泵其填料处的填料容易发热变成软化状态，从而在此处会有大量污水溢出，故一般必须在２－３星期更换填料一次。但必须指出，在更换填料时，得先关闭进水闸阀，有的进水闸阀是人工盘动，十分笨重，管理人员深感费力，劳动强度大就指的是这方面的工作。更何况有些手动闸阀万一关不死，就不能及时正常地更换泵机的填料，造成泵无法正常工作的假象。同时，大量污水溢出影响水泵间的工作环境，臭气熏天，从而不得不使泵停止运转。最具潜在危险的工作就是泵站管理人员打开泵的工作孔，检查泵内叶轮是否有垃圾缠绕时，必须严格执行一套复杂的安全操作程序，如填写下井工作票、使用硫化氢测定仪监视、戴上防毒面具工作等。试想一下，戴上防毒面具又闷又热，还要使出很大的力在一定时间内清除叶轮上的垃圾，的确很不方便。如果没有这些安全措施，则水泵内可能积聚着一定浓度的硫化氢气体，随时可能外逸，酿成危及人身安全的硫化氢气体中毒事故。由于长期与污水打交道，计量泵许多泵站管理人员双手皮肤上均有不同程度的刺激、痒等反应，在寒冬腊月里更觉十分难受。　　若使用诸如ＦＬＹＧＴ－Ｃ泵等大型潜水污水泵，泵站管理人员仅通过地面上的控制柜的仪器仪表来及时正确地监控和记录。由于泵整只浸没在水中，泵所输送的介质（水）起到隔音作用，从而大大降低了噪声，改善了泵站的作业环境。由于泵在投入运行前，其润滑油（脂）已全部加注完毕，在正常运行中，不需要加注润滑油（脂）工作。不仅如此，泵在运行管理中无须上述ＭＦ（ＭＮ）泵所必须的操作、保养、巡视要求。这是对ＭＦ（ＭＮ）泵日常管理的一次较大的革新。

 　　四、结束语　　从污水泵站的选泵工作中，笔者深深体会到“科学技术是第一生产力”论断的精辟。在现代科学技术日新月异的今天，污水泵站要想在激烈的市场竞争中站稳脚根，就必须大力推广运用诸如ＦＬＹＧＴ－Ｃ泵等大型潜水污水泵。虽然价格贵了一点，但从长远来看，它们的确能够减轻泵站管理人员的劳动强度，提高泵机的运转率，确保污水输送、拦截任务的完成，取得经济效益和社会效益的双丰收。所以，诸如ＦＬＹＧＴ－Ｃ泵等大型潜水污水泵是污水泵站的最佳选择。

“ Choice of a sewage pumping station pumps ”是由中国离心泵网提供的水泵行业新闻，译文仅供参考。另外，中国离心泵网还提供相关产品搜索：离心泵型号、离心泵价格、离心泵技术、离心泵新闻、离心泵生产商等。

译文：
          I. Introduction Shanghai is a very busy large modern city, its development goal is to build an international economic, financial and trade center, which requires the city to have a plenty of water and superior water environment compatible with its status. However, due to various limitations, the city domestic sewage, industrial waste water and rainwater can not do full streaming of contaminated water body also can not reach all the cleaning, all sources can not control. However, available to transport sewage pumping station, interceptor sewage, industrial waste water. The city's sewage pumping station to control and improve the city played a key role in water pollution. Sewage pumping station in the city (such as Wuchuan pump, etc.), commonly used MF (MN) pump increasingly obvious shortcomings, maintenance, installation of low accuracy, noisy, daily management of the maintenance of large, toxic or harmful gases, endanger the physical safety; the same time, the pump have problems and had to stop transmission, intercepting the sewage area, may be able to fulfill the production targets will directly affect the units of economic and social benefits. With the rapid progress of science and technology system of pump, one from the new materials, new structures, new technology made large submersible sewage pump may completely replace the original MF (MN) pump machine, its rapid development trend. Such as the currently used FLYGT-C (filly) pump, contain certain scientific and technological means and the quality of stable large submersible sewage pump, the majority of engineers, technicians and management staff generally welcomed pump. Second, FLYGT-C pump replacing MF (MN) pump pumps the basic conditions are two common 1. Both pump flow and head performance curve, flow and power performance curve, flow and efficiency performance curve similar. 2. The two pumps pumping medium (water) temperature, diameter, flow, head, voltage, power, ground control panels, etc. are common. 3, FLYGT-C pump replacing MF (MN) pump is superior to its unique high-tech 1. FLYGT-C pump in the structural design, fabrication than the MF (MN) pump more scientific and rational MF (MN) pump with the motor shaft, bearing housing, pump shafts, couplings and other drive modules, the shaft with stainless steel casement. Motor run time depends mainly on fan to cool, long-running, poor cooling effect. During operation, the motor itself unprotected take control cabinet through the implementation of the ground. If the motor stopped running a long, easy to damp impact of insulation. During operation, the pump is usually used mechanical seals and packing seal, mechanical sealSuber-water pumps needs water, or a little lax in the damaged pumps; packing sealing due to day of continuous operation and easy heat to soften the need for frequent replacement. Pump and impeller corrosion process backward, poor corrosion resistance, surface is very rough. FLYGT-C pump motor shaft and pump shaft sharing a, shaft is the motor shaft extension is made of stainless steel material quality. 2 bearings in the entire submersible pump. Immersed in the water pump work, which depend on the environment and the media pumping enough cooling without external cooling system. Pump stator coil immersed in F class insulation paint three times and baked three times, in the stator coil mounted thermal switches, and motor overload protection, oil spill protectionMagnetic pumps through sensors connected to the ground control cabinet. Motor cable into the line of sealing strength, it uses a cylindrical flexible sleeve, outer washer composition, bush cables can be squeezed into the wire room and the elimination of tension and a certain torque, the into the line to ensure easy installation replace the damaged cable, instead of epoxy, silicone or other secondary sealing. Sealing performance of the pump has its own unique characteristics, which are of an independent series of double mechanical seal consists of: under the seal (first seal) is located in the pump casing and the oil chamber by a static ring and a positive spin corrosion-resistant tungsten carbide ring composition; on the seal (second Seal) in the oil chamber and the motor between the ceramic by a static ring and a positive rotation of the carbon ring form. 2 sealed the interface by its own spring system connected to the mechanical seal can be clockwise and counterclockwise rotation, without damaging the sealing components, without the maintenance and regulation. Pump and pumping the external medium of metal surfaces corrosion spray paint. In the volute and impeller wear ring fitted between the suction from the clear rubber coated steel or brass, to ensure the volute and impeller an effective seal between the suction. 2. FLYGT-C pump install than MF (MN) pump more easily and quickly MF (MN) pump in the building, the need to build a huge water pump, installed up and down escalators, lighting, ventilation, Journal of pumps, wells and other ancillary equipment and facilities. The installation must pump a solid foundation, not to allow the pump itself as the anchor pipe to withstand the weight of pipe. It is worth mentioning: the pump and shaft precisely, if sealed with the packing, the two couplings of radial and axial deviation of not greater than 0.1 mm, due to the long running, base (triangle rack) gradually loosened, and corrosion, so that the pump is installed after the repair difficult. FLYGT-C pump in the construction and transformation, not MF (MN) pump pump within a required ancillary equipment and facilities, greatly reducing the construction money and time, reducing the funds and auxiliary facilities installation time, which is like FLYET -C pumps and other large submersible sewage pump is able to replace MF (MN)Screw pumps pump one of the greatest advantages. FLYGT-C pump is simple to install submersible pump at least two parallel guide rods under the guidance of water from the pump pit top to slide down the free connection blocks, and can automatically block connection and drainage connections, without installers downhole installation and maintenance. Pump and the drainage connection seat is completely sealed metal and metal contacts do not need film, O-ring or gasket seals the form of drainage. Pump all the weight of the water from the pump curve and the pump upgrade chain dedicated commitment to enhance the chain, the total weight of the load borne by twice to ensure a solid. 3. FLYGT-C pumps in operation and management than in MF (MN) pump more secure, easier MF (MN) pump in operation before the strict operating rules, such as the first inlet valve to open and play an open air copy grams exhausted air pump, drive dynamic coupling, so check the coupling gap. Pump run time, must be "ground view, ground sniffing, touching ground, ground to listen" to identify the operation of the pump must always walk on the steep escalator between the upper and lower pump, especially if a lesbian on duty, the fear of potential How much will affect the sense of safety and quality of daily management. Pump run-time, big noise, vibration, seriously hampering the pumping station management inspections, rest. Pump filling the tank once every week to grease, the bearings must not be the case in the absence of grease to run, otherwise, noise, bearing fever, severe damage to bearings, pumps forced to stop running. Since the pump runs continuously 24 hours a day, its easy to fill office packing heat into soft state, so here a large number of sewage overflows, it must generally be replaced in 2-3 weeks time filler. But it must be pointed out that when replacing packing, you must first close the water inlet valve, water inlet valve is the artificial disc, some moving, very heavy, great management effort, labor-intensive to refer to this work. Moreover, in case some manual valve related death, can not properly and timely replacement of pumps in the filling, causing the illusion of the pump does not work. Meanwhile, a large number of sewage overflow pump and betweenSelf-priming pumps the work environment, malodorous, and thus had to stop the operation of the pump. Potentially the most dangerous job is to pump the pump work management opened the hole to check whether the waste pump impeller winding must strictly implement a complex set of security procedures, such as completing work tickets go down, use the instrument to monitor hydrogen sulfide determination , put on gas masks and so on. Imagine wearing gas masks stifling hot, but also exert great power in a certain period of time remove the impeller on the rubbish, really inconvenient. Without these safety measures, the pumps are likely to accumulate a certain concentration of hydrogen sulphide gas, escaped in time may also lead to endanger the personal safety of hydrogen sulfide poisoning. As the long-term deal with the sewage, and many managers hand pump on the skin have different levels of stimulation, itching and other reactions, where even in the Handonglayue feel very uncomfortable. The use of such FLYGT-C pumps and other large submersible sewage pump, pump station managers on the ground only through the instrument control unit to monitor and record the correct time. As the only full immersion in the water pump, pump the transport medium (water) play a sound effect, thus reducing noise and improving the pump's operatingChemical pumps environment. As the pump put into operation, the lubricant (grease) has all the filling is completed, in normal operation, do not need to add lubricant (grease) work. Not only that, do not pump in operation and management of the MF (MN) needed to pump operation, maintenance and inspection requirements. This is a MF (MN) pump the daily management of a large innovation. IV Conclusion Election from the sewage pumping station pumps work, I deeply appreciate that, "Science and technology are primary productive forces" the brilliant conclusion. Rapid changes in modern science and technology today, a sewage pumping station in order to fierce competition in the market a firm footing, we must vigorously promote the use of such FLYGT-C pumps and other large submersible sewage pump. Although a little expensive, but in the long run, they can indeed reduce the labor intensity of pump station managers to improve the operation rate of the pump machine to ensure that the sewage transmission, interception task, the achieved economic and social benefits of the double harvest. So, as FLYGT-C pumps and other large submersible sewage pump sewage pump station is the best choice.

原文来源：http://www.1lixinbeng.com/

2010-09-01 06:55

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