泵机械的问题的解决办法

1、Mechanical Problem Solutions机械的问题的解决办法Steven_TianjinMechanical Problem Solutions机械的问题的解决办法Balance all of your rotating equipment. If you do not have dynamic balancing equipment in your plant there are contractors and vendors anxious to work with you. because the rapid wear always destroys balance. I

2、n the higher speed pumps this wear can be very severe. 平衡所有的旋转设备.如果在你的工厂中没有动平衡设备,这里有供应商与合同商渴望与你工作.因为快速磨损通常破坏平衡.在更高速度的泵中,这个磨损能非常严重Bent shafts are a problem. If you can straighten them go ahead and do it, but most attempts are unsuccessful. In the majority of cases you are better off replacing the sha

3、ft. 弯曲的轴是一个问题.如果你能弄直他们继续和作他,但大多数的企图是不成功的.在大多数的情况中你最好更换轴Mechanical Problem Solutions机械的问题的解决办法Do a proper pump/ driver alignment using either a Laser or the reverse indicator method. Upgrading the pump power end to a C or D frame motor adapter is a more sensible and economical decision. Once the conv

4、ersion is made misalignment ceases to be a concern. These adapters are available for most motors and will maintain the proper alignment as the equipment goes through its normal temperature transients. 使用一个激光或者一个倒转指示器的方法做一个恰当的泵/驱动对准.升级泵的功率端到一个 “C”或 “D”框架电机适配器上是一个更明智和经济的决定.一旦变换被做了,未对准情况必须被考虑.这些适配器对大多数

5、电机可适用和维持恰当的对准,随着设备通过它的通常温度瞬时Mechanical Problem Solutions机械的问题的解决办法Always pipe from the pump suction to the pipe rack, never the other way. There are some more piping practices that you should follow:通常布管从泵的吸入侧到管线架,从来不要用其它方法.这里有一些更多的布管习惯你应遵循If you are experiencing pipe strain because of thermal growt

6、h at the suction, you might convert to a centerline design wet end and solve the problem. Center line designs make sense any time you are pumping a fluid in excess of 200 degrees Fahrenheit (100 Centigrade)如果你经历管线应力因为在吸入侧的热增长,你可能转换到一个中心线设计湿端和解决这个问题.中心线设计使你任何时候泵送超过200华氏度的液体有意义Try to use at least ten

7、diameters of pipe between the pump suction and the first elbow.努力在泵的吸入口和第一个弯头之间使用至少10倍直径的管子Valve stems, T branches and elbows should be perpendicular to the pump shaft not at a right angle to it. This is especially important with double suction pumps because uneven inlet flow will cause the impeller

8、 to thrust in one direction causing bearing problems on one end of the pump.阀茎,T分支,和弯头应被安装垂直于泵轴,不是在直角上.对于有双吸入泵,这是特别重要的,因为不平稳的进入流将引起叶轮在一个方向上推引起泵的一端的轴承问题Mechanical Problem Solutions机械的问题的解决办法Pipe supports and hangers should be installed at unequal distances.管线支撑和吊架应被安装在不等的距离Use lots of hangers to supp

9、ort the piping.使用许多吊架来支撑管线Use lots of loops and expansion joints in the piping system.在管线中使用许多环结和膨胀连接After fabrication and testing remove all supports and lock pins from the spring hangers, loosen pipe flanges and adjust the system to free the pump from pipe strain.在装配和测试完后移去所有的支撑和从弹簧吊架上的锁销,松的管线法兰和调

10、节系统让泵没有管线应力Reference the Hydraulic Institute Manual, or a similar publication to learn the proper methods of piping several pumps from the same suction source to prevent vortexing etc.参考 “液压协会手册”,或一个相似的印刷物来学习从相同的吸入源配管不同的泵的恰当的方法来预防涡流等Mechanical Problem Solutions机械的问题的解决办法The mass of the pump concrete

11、 foundation should be five times the mass of the pump, base plate and other equipment being supported.泵水泥基础的质量必须为泵,基板,和其它被支撑的设备质量的5倍The foundation should be three inches ( 75 mm) wider than the base plate, all around, up to 500 horsepower (375 KW) and six inches (150 mm) above 500 horse power (375 K

12、W).小于等于500马力(375千瓦),基础必须比基座一周宽出3英寸.大于500马力,基础应最小宽出6英寸Imaginary lines, extended downward 30 degrees to either side of a vertical through the pump shaft, should pass through the bottom of the foundation and not the sides.假象的线通过泵轴延伸向下30度到到一个垂直泵的两侧,应该通过基础的底部和不是侧面Every inch of stainless steel grows 0.001

13、 inch for every 100 Fahrenheit rise in temperature (0,001 mm/mm/50 Centigrade) This thermal growth can cause the impeller to rub the pump casing as well as cause rubbing in many close tolerance clearances such as the wear rings. Carbon steel grows about 30% less than stainless steel.每英寸的不锈钢对于每100华氏度

14、温度的提升将增长0.001英寸.这个热增长能够引起叶轮摩擦泵壳,也能引起许多紧密误差间隙的磨损,像磨损环.碳的增长大约比不锈钢小30%Mechanical Problem Solutions机械的问题的解决办法Any time the shaft moves there is the danger of parts rubbing. Thermal imaging equipment can detect this rubbing easily. When ever you set tight tolerances be sure to allow for thermal growth and

15、, in the case of A.N.S.I. pumps, impeller adjustment. 无论什么时候轴的移动,这里有零件摩擦的危险.热成像设备能够很容易的探测这个摩擦.无论什么时候你设置紧误差的时候,确保允许热增长和,在ANSI泵的情况下,叶轮的调整Worn or loose bearings are caused by improper installation or allowing water to enter the bearing cavity. Labyrinth seals or positive face seals are the easiest solution to the water problem. Install bearings by using a proper induction