上海龙亚泵阀教你如何使用和维护管道离心泵
泵是工业生产与人们日常生活中常见的一种设备。根据许多使用工况，设备可以分为许多类型。根据其性能的反馈，巨型泵的流量甚至可以达到几十万小时，而微型泵的流量只能达到几十毫升甚至更少。因为需要不同，每个泵本身的压力值也不一样，大的可能达到19.61MPA以上。泵的主要用途是输送液体，所以在运行中还有一个关键因素，就是液体本身的温度。根据目前的技术水平，该泵可以承受低至200℃甚至更低的液体温度，以及高达800℃或更高的温度。
上海钛龙管道离心泵、立式管道结构高同轴度管道离心泵具有工艺管道附件简化、流体进出口稳定、轴端密封接近零泄漏、低噪音、高效率、低消耗的特点。钛龙管道离心泵使用要点:(1)调试工作:检查接头是否松动；用手转动联轴器转动转子，看机组转动是否灵活，有无异响和重量不均感，从而判断泵内是否有异物或轴是否弯曲，密封是否安装不正确等。检查密封腔内清洁的20号润滑油是否充满1/2腔空间；离心泵机组表面是否清洁；单元转向空载测试。(2)手动启动:给泵加注(第一次)，稍微打开出口阀，启动电机，当压力上升时，确认泵机组稳定运行时，出口阀逐渐打开至工况要求。(3)运行检查:泵在工频(变频)下正常运行时，应定期检查并记录泵组的电流表、电压表、进出口真空计、压力表和流量计的读数。机组振动、噪音、温升是否正常。轴封处不应有明显的喷气燃料泄漏。(4)正常停机:关闭排气阀，使泵轻载，停止电机。(5)紧急停机情况:(1)泵电机工作电流表指示异常(过大或极少)；WaterSunny泵系统发出异常噪音。⑵泵进口真空压力表和出口压力表指示异常，泵体振动大，发出异常噪音，导致性能严重下降。(3)泵电机产生异味，航空油从轴封泄漏，轴承温度超过75度等。VAREM管道离心泵快速维护要点:1)每运行500小时，松开密封座上的塞子，用注射器抽出腔体内残留的机油；用合格的20号机械油填充密封腔至腔容积的一半(检查加油方法是否合适:运行油泵，油不会流出)；拧紧塞子以防泄漏。2)当电机机械噪音增大，轴承温升异常时，检查电机轴承的润滑情况。如果油脂变色或变脏，应及时更换。3)当发现密封座漏油时，可松开密封座上的螺塞，运行油泵。当油出来闻起来像航空油时，可以判断机械密封无效。停止使用管道泵，以便快速更换机械密封。4)更换失效机械密封的方法:(1)准备好放置泵类零件的工作台(地面)和拆卸工具，不要乱放，以免损坏泵类零件。(2)拆卸前确认电机处于维护状态；拧开油塞，用吸管吸出密封座腔内的润滑油。(3)拆卸拼合联轴器:先拧松联轴器的固定六角凹头螺钉，然后从轴上轻轻拉下联轴器的一半(注意不要脱落)。用梅花扳手拧松泵轴悬挂螺栓和挡块，让叶轮慢慢沉入泵体，拆下ZILMET泵的联轴器的另一半，取下泵轴挡圈。(4)拆卸密封座:拧松密封座压紧螺母，轻轻取下密封座(注意:不要弄破密封座上的橡胶油封)并清洗干净。(5)拆卸清洗轴承座:先将轴承座轻轻松开，然后用拆卸螺栓顶起轴承座，沿泵轴向上提起，卸下；用喷气燃料清洁轴承和阀座，在安装前将其干燥，并涂上少量20号机油以进行润滑保护。(6)拆卸机械密封:抓住密封弹簧，沿泵轴向上提起。(7)机械密封装配:在动静环的镜面上涂一层干净的20号润滑油；润滑导向轴承座，然后将静环轻轻放入导向轴承座；将润滑油放在泵轴上，将机械密封的动环部分轻轻安装在泵轴上，用手轻轻推动密封环，使其能够自由伸缩(注意动环和静环的防旋转部分需要组装到位)。(8)安装密封座:先将橡胶油封安装在密封座上，然后将密封座安装在泵盖上，压在轴承座上，拧紧螺母。(9)联轴器安装:首先在电机轴头上安装挡圈，安装联轴器的一半，然后在泵轴端和联轴器槽上安装限位器，用梅花扳手拧紧螺栓(提升泵轴3~5 mm，提供机械密封预应力)；然后安装联轴器的另一半，并拧上六角凹头螺钉，该螺钉必须拧紧。安装联轴器的正确检查要求:拼合联轴器上下间隙均匀；用手转动联轴器几次，检查转动是否灵活。(10)根据操作要点，检查机械密封更换是否正确，泵组运行是否正常。实践证明，如果按照上述方法正确使用管道离心泵并快速维护，作为停机坪管道加油系统的核心设备，可以保证其正常运行；通过变频控制，可以充分发挥其运行稳定、高效、节能、持久耐用的优势。目前，泵的帮助在许多领域都是不可或缺的，如农业、工业等。在农业中，泵的主要功能是用于灌溉和排水。我国的农业用地很广，所以中国大多数农村地区离不开泵的帮助。在造船工业领域，一艘远洋船舶可能需要数百台泵，需要使用的泵有很多种。给排水等水泵在城市建设中也是不可或缺的。从这些方面不难看出，泵在许多行业和领域都有应用，因此制造泵的行业需要更加专业化和标准化。上海龙亚泵阀专业研发各类多级离心泵、中间泵、长轴泵、凝结水泵、多级锅炉给水泵、潜水泵、污水泵等。上海龙亚泵阀努力为广大用户提供高品质的泵浦产品。
Shanghai Longya pump valve teaches you how to use and maintain the pipeline centrifugal pump
Pump is a common equipment in industry and even life. According to a lot of evidence, equipment can be divided into many types. According to the feedback of its performance, the flow rate of the giant pump can even reach hundreds of thousands of hours, while the flow rate of the micro pump can only reach tens of milliliters or even less. Because of different requirements, the pressure value of each pump itself is also different, which may reach more than 19.61 MPa. The main purpose of the pump is to transport liquid, so there is also a key factor in the operation, which is the temperature of the liquid itself. According to the current technical level, the pump can withstand liquid temperature as low as 200 ℃ or even lower, and temperature as high as 800 ℃ or higher.
Shanghai Titano pipeline centrifugal pump and vertical pipeline structure high coaxial pipeline centrifugal pump have the characteristics of simplified process pipeline accessories, stable fluid inlet and outlet, shaft end sealing close to zero leakage, low noise, high efficiency and low consumption. Key points of pipeline centrifugal pump: (1) commissioning: check whether the joint is loose; rotate the coupling and rotor by hand to see whether the unit is flexible, whether there is abnormal noise and uneven weight, so as to judge whether there is foreign matter in the pump, whether the shaft is bent, whether the seal is installed incorrectly, etc. Check whether the clean No. 20 lubricating oil in the sealing chamber fills 1 / 2 of the chamber space; whether the surface of the pump unit is clean; unit steering no-load test. (2) Manual start: fill the pump (the first time), slightly open the outlet valve, start the motor, when the pressure rises, confirm the stable operation of the pump unit, gradually open the outlet valve to the working condition requirements. (3) Operation inspection: when the pump is in normal operation under power frequency (frequency conversion), the readings of ammeter, voltmeter, inlet and outlet vacuum gauge, pressure gauge and flowmeter of the pump set shall be regularly checked and recorded. Whether the vibration, noise and temperature rise of the unit are normal. There should be no obvious leakage of jet fuel at the shaft seal. (4) Normal shutdown: close the exhaust valve, make the pump light load, stop the motor. (5) Emergency shutdown: (1) abnormal indication of pump motor working ammeter (too large or very few); abnormal noise from watersunny pump system. (2) the indication of the vacuum pressure gauge at the inlet and outlet of the pump is abnormal, the pump body vibrates greatly and makes abnormal noise, which leads to serious performance degradation. (3) The pump motor has peculiar smell, the aviation oil leaks from the shaft seal, and the bearing temperature exceeds 75 ℃. The main points of rapid maintenance of varem pipeline centrifugal pump are as follows: 1) loosen the plug on the sealing seat every 500 hours, and use a syringe to extract the residual oil in the cavity; fill the sealing cavity to half of the cavity volume with qualified No. 20 mechanical oil (check whether the refueling method is appropriate: the oil will not flow out when the oil pump is running); tighten the plug to prevent leakage. 2) When the mechanical noise of the motor increases and the bearing temperature rises abnormally, check the lubrication of the motor bearing. If the grease is discolored or dirty, it should be replaced in time. 3) When oil leakage is found in the sealing seat, the screw plug on the sealing seat can be loosened to run the oil pump. When the oil comes out and smells like aviation oil, it can be judged that the mechanical seal is invalid. Stop using the pipe pump to replace the mechanical seal quickly. 4) Methods to replace the failed mechanical seal: (1) prepare the workbench (ground) and disassembly tools for placing pump parts, and do not place them randomly, so as to avoid damaging pump parts. (2) Before disassembly, make sure that the motor is in the maintenance state; screw off the oil plug and suck out the lubricating oil in the sealing seat cavity with the suction pipe. (3) Disassembly of split coupling: first loosen the fixed hexagon socket head screw of the coupling, and then gently pull down half of the coupling from the shaft (be careful not to fall off). Use a ring wrench to loosen the suspension bolt and stop of the pump shaft, let the impeller sink into the pump body slowly, remove the other half of the coupling of zilmet pump, and remove the pump shaft retaining ring. (4) Remove the seal seat: loosen the compression nut of the seal seat, gently remove the seal seat (Note: do not break the rubber oil seal on the seal seat) and clean it. (5) Remove and clean the bearing seat: loosen the bearing seat slightly, lift the bearing seat with the removal bolt, lift it up along the axial direction of the pump and remove it; clean the bearing and valve seat with jet fuel, dry them before installation, and apply a small amount of 20 oil for lubrication protection. (6) Disassembly of mechanical seal: grasp the seal spring and lift it up along the axial direction of the pump. (7) Mechanical seal assembly: apply a layer of clean 20 lubricating oil on the mirror surface of the dynamic and static rings; lubricate the guide bearing seat, and then put the static ring into the guide bearing seat gently; put the lubricating oil on the pump shaft, install the dynamic ring part of the mechanical seal on the pump shaft gently, and push the seal ring gently by hand to make it retract freely (note that the anti rotation parts of the dynamic and static rings need to be assembled in place) )。 (8) Installation of sealing seat: first install the rubber oil seal on the sealing seat, then install the sealing seat on the pump cover, press it on the bearing seat, and tighten the nut. (9) Coupling installation: first install the retaining ring on the motor shaft head, install half of the coupling, then install the limiter on the pump shaft end and coupling groove, and tighten the bolts with a ring wrench (lift the pump shaft by 3 ~ 5 mm to provide mechanical seal prestress); then install the other half of the coupling, and screw on the hexagon socket head screw, which must be tightened. The correct inspection requirements for the installation of the coupling: the upper and lower clearance of the split coupling is even; rotate the coupling several times by hand to check whether the rotation is flexible. (10) According to the operation points, check whether the mechanical seal is replaced correctly and whether the pump unit operates normally. Practice has proved that if the above method is used correctly and maintained quickly, as the core equipment of the apron Pipeline Refueling System, it can ensure its normal operation; through frequency conversion control, it can give full play to its advantages of stable operation, high efficiency, energy saving and durability. At present, the help of pump is indispensable in many fields, such as agriculture, industry and so on. In agriculture, the main function of the pump is for irrigation and drainage. China's agricultural land is very wide, so most of China's rural areas can not do without the help of pumps. In the shipbuilding industry, an ocean going ship may need hundreds of pumps, and there are many kinds of pumps. Water supply and drainage pumps are also indispensable in urban construction. It is not difficult to see from these aspects that pumps are used in many industries and fields, so the industry of manufacturing pumps needs to be more professional and standardized. Shanghai Longya pump valve specializes in the research and development of various types of multi-stage centrifugal pumps, intermediate pumps, long shaft pumps, condensate pumps, multi-stage boiler feed pumps, submersible pumps, sewage pumps, etc. Shanghai Longya pump valve strives to provide high quality pump products for the majority of users.