Skf life cycle management is how we combine our technology. When this coupling is left connected and tightened, misalignment cannot be measured conventionally by rotating both coupled shafts, because no relative movement between the shafts is allowed to occur, as would. X check mountings check and secure all pump mountings. The alignment of the pump flanges to the connecting piping is called flange alignment. Complete assembly installs anywhere the motor feet can be bolted. Pumps need to be sized based on pressure, flowrate and head. Its purpose is to convert energy of prime mover an electric motor or turbine first into velocity or kinetic energy and then into pressure energy of a fluid that is being pumped. This measurement will be made by using dial indicators that measure in 0.
Method statement for installation and balancing of chilled. X motor condition check the condition of the motor through temperature or vibration. Before starting the pump installation process mechanical or ac engineer to study the pump manufacturers written installation and alignment instructions. A 100 hp electric motor on a 50hp load will work and run smooth and cool and only use 50 hp of energy. The latter requires an experienced technician and accurate instruments e. Alignment tolerances for pumps range from the rough alignment that a conscientious technician can accomplish with visual indicators accuracy of about 0. Mount permits maximum flexibility of power unit design. Avace mafactri office the importance of motor shaft alignment the objective of optimized shaft alignment is to increase the operating life span of rotating machinery. Enter your official contact and identification details. Mike, what we have is a three stage methane compressor, each throw is oriented 90degrees from the other, so it looks like a t. If the front foot of the motor is left 2 mils high and the back feet are left 2 mils low, the shaft alignment results will be as follows. Alignment employ laser or reverse dial indicator technology to align pump and motor. Check angular alignment with a micrometer, vernier or caliper. All the major coupling manufacturers provide minimum alignment values and offset values for their particular.
This module covers the selection, preparation, joining, and support of plastic and copper piping. Does alignment procedure for vertical pump differ from horizontal pump alignment in anyway. Several equipment alignment methods, especially the reverse dial indicator method, which is the principle used in laser alignment is covered in explicit detail. Our vision is to build a digital community through websites, enewsletters, and social media channels that allows pump industry professionals to exchange ideas, news stories, product information, case studies, videos, event information and more. Again, reverse alignment is the measurement of one axis to the relative position of an opposing axis. Shaft alignment is a method or procedure by which shafts of machines such as motors and turbines are connected to a generator or pump in proper alignment. Laser alignment is an essential component of a viable maintenance. Rated 5 out of 5 by swe1 from best alignment tool out there i have used several shaft alignment tools over the years and the fluke 830 is the easiest and most user friendly that i have come across. Possible causes and solutions to misalignments in pumps.
Uneven wear of a mechanical seal, or machining of a shaft sleeve for packedtype pumps. In isolation each strategy can help to reduce unexpected machine failure but taken together they form the hub. A millwrights guide to motor pump alignment tom harlon on. Pump alignment form fill out and sign printable pdf.
Soft foot is a common issue when aligning rotating equipment. Minimize the soft foot under the motor before performing alignment. Coupling installation alignment for monoblock pumps. Despite its sophisticated technology, this shaft alignment tool has been designed for ease of use, and includes user friendly features such as. To achieve this goal, components that are the most likely to fail must be made to operate within their acceptable design limits. The adapter solves the problem of there is no time to do an alignment. Find best questions related to pump alignment, pump piping and get pump alignment, pump piping qa. By combining the knowledge and experience of the two businesses, our. Backlit colour lcd screen for easy viewing, even in direct sunlight.
One pump extracting, diverting, a small flow from flow one. Precision alignment with no manual input of data and no graphical or. Dial gauge alignment procedure in covered with detailed animation. You may have heard this in the pastwe cant align our vertical pumps since there is no adjustment due the machined fit between the electric motor and pump housing. And you are correcting two angles, one for each coupling.
Shaft misalignment is responsible for as much as 50 percent of all costs related to rotating machinery breakdowns. Misalignment may account for over 50% of malfunctions in rotating machinery, leading to problems such as worn or broken couplers, vibration, and excessive wear of bearings, seals and wear rings. A layout drawing should be approved and pumps should be installed in locations indicated making sure that there is sufficient access space for periodic maintenance, removal of motors impellers. The alignment of turbinegenerator sets poses unique challenges that only. For maintenance personnel in drinking water and wastewater. If the growth of the motor is the same for both ends, the result will be a change in the offset alignment of 4.
Specify that bolting which connects pump to pipe must fit without force. Alignment report hung seng huat engineering product co. Sep 19, 2016 motor pump alignment is the process of aligning shaft centerlines between a motor and a pump. A practical guide to shaft alignment plant services. Update your shaftalignment knowledge peerless pump. Cavitation increase pump submergence, lower pumped liquid temperature, check sump for compliance with hi recommedations, redesign sump if necessary 5. Pump alignment form fill online, printable, fillable, blank pdffiller. The amount of alignment correction at the motor can seem to be very large. The book is reference material on rotating machinery basics, pump overhaul, mechanical seals, basic vibration, and shaft alignment. The alignment of the pump shaft to the drive shaft of the motor, gear, or engine driving the pump is called shaft alignment. Machine vibration, bearing damage, premature seal wear, and coupling damage are all examples of issues pumps experience if improperly aligned at installation. Machinery alignment tolerance tables impact engineering.
Aligning vertical pumps empowering pumps and equipment. Additionally recommend strobe to combine ma chine rpm and belt speed to check for belt slip. But usually a pump and electromotor have different coefficients of thermal growth and it is very important. In addition to alignment quality and repeatability problems, it can cause of machinery vibration, reduce life in electric motors, and cause internal clearance problems. The main purpose of shaft alignment is to make sure that the center line of the motor rotor shaft coincides with the center line of the driven machinery i. Produce pdf reports directly from the display unit and. If the pump is turning the wrong direction, reverse any two of the line wires at the motor in the conduit box or at the motor starter.
In isolation each strategy can help to reduce unexpected machine failure. We have a vertical turbine pump having capacity of 20000cum per hour and pressure head 16. The motor is the prime mover, transferring power to the pump by the use of a coupling. X check bearings inspect bearings and drive belts for wear. To achieve good, repeatable results, pre alignment steps must be done. Improper alignment leads to increase of stresses in the shafts and thus on the equipment, which might result in break down of the machine. Where rigid couplings are used then the motor alignment is critical and poor. Pump alignment and coupling issues pump engineering engtips.
Vemc presents pump motor alignment process with help of dial gauge method for accurate and smooth functioning of machines in your manufacturing units. Alignment accuracy is critical to pump and driver longevity as stated above, and generally the better the alignment the longer the pump and driver bearing life. Improper impeller trim remove pump and replace impeller 3. The alignment training is suitable for technicians undertaking machine alignment, coupling alignment, motor alignmnet, pump alignment, etc. This is probably the most common configuration of coupled machines in industry. Close coupling is the preferred method of joining pump and motor as it allows a motor to.
A centrifugal pump is one the simplest pieces of equipment in any process plant. Machine type pump motor vertical angle horizontal angle horizontal offset thermal compensation stationary s machine movable m machine vertical offset offset 2. The shafts of the pump and drive unit must be closely aligned. Above thirtyhorse power 22 kw you hang the pump on the motor.
I want to know how alignment of pump shaft is done how to do the alignment for vertical pumps with motor pump engineering engtips. For example, the only correct way to express shaft alignment tolerances is in terms of alignment conditions at the coupling, and we will describe several ways to do this. A quick check revealed misalignment of the pump and motor, causing excessive noise and premature bearing wear. Therefore, less accurate methods can be used at slower shaft speed. Align machine couplings to one another ignoring spacer. A millwrights guide to motor pump alignment by tommy b.
Flexible couplings an overview sciencedirect topics. Alignment is important, but we can get away with the least accurate method. A millwrights guide to motor pump alignment, second edition is the result of over 38 years of hard work and many thousands of hours writing, testing, retesting, and testing again the alignment related formulas the author developed on his own. Couplings and shafts can be quickly and easily aligned by using a laser shaft alignment lsa system. Proper alignment is the largest factor in determining the life of bearings, seals and couplings.
However, small movements of these components can occur during shipping and while the pump set is being installed at its final location. The shaft alignment training course provides a highly practical knowledge of the use of dial gauge in coupling alignment. The objective of optimized shaft alignment is to increase the operating life span of rotating machinery. Causes of pump shaft and coupling misalignment and ways to prevent misalignment. At first we used a lovejoy that was far too small, and was a straight jaw.
Align before and after the pump and piping are bolted together. So to position the motor for proper shaft alignment, these two methods must be utilized. Vertical condensate pump alignment the rigid or solid coupling makes taking meaningful alignment measurements virtually impossible. Lower costs as the pump motor mount eliminates the need for expensive bed plates, pump foot brackets, riser blocks, shims, and associated labor. It is much better then units that cost double what this tool does. A typical pump in an hvac application requires a fourpole motor 1,750 to 1,800 rpm, depending on slip. How to complete the pump alignment form on the internet. Unless otherwise instructed at a specific point in the user instructions, see section 5, commissioning, start up, operation and shutdown. One of the most important parts of pump setup is making sure that the pump and the drive motor are carefully aligned. The main difference in aligning a vertical cface pump and traditional alignment is this. Principles for diverting and merging viscous flows diva. The fixturlaser nxa pro is an expert system for precision alignment of pumps and drives.
In the article temperature growth influence on the shaft alignment of centrifugal pump unit is examined. May 07, 2007 proper shaft alignment is especially critical when the motor is operated at high speeds. It is sure to be valuable to novices and professionals alike. How many times have you had to pull the ps pump off the motorplate or slide your motor back out and try to realign the pump drive. Some, but not all explosion proof motors are available with a.
Machinery alignment tolerance tables the suggested alignment tolerances shown here are general values based upon experience and general industry standards and should not be exceeded. Its purpose is to convert energy of prime mover an electric motor or. Alignment of pumps one of the most important parts of pump setup is making sure that the pump and the drive motor are carefully aligned. Proper alignment of rotating equipment has a long been recognized as a prerequisite to safe, reliable operation. Benefits, methods of proper pump to motor alignment. He would sweep the indicator around the pump shaft, stop, loosen the motor. The alignment of shaft with the bearing and housing, which is a manufacturing tolerance stackup of the bearing parts and the housing bores and faces. Use alignment tools from grainger to help insert, remove and reposition fine springs and other small parts.
Mechanical fastening, joining, and assembly, james a. It is a major cause of repeatability problems with shaft alignment measurements, whether using dial indicators or a laser alignment system. Shaft alignment report laser alignment, ultrasonic. Shaft alignment fluke 830 laser shaft alignment tool fluke. Close coupling also provides a compact unit that is often less expensive than an equivalent long coupled assembly.
In practice, proper alignment is difficult to achieve without using alignment equipment such as dial indicators or laser alignment tools to check and correct for misalignment. Close coupling is the preferred method of joining pump and motor as it allows a motor to be directly mounted onto a pump. Improper alignment results in excessive vibration, short life of driven equipment compound bearing and coupling clutch parts, and frequent re alignment. These indicator readings mean that you need to move the motor. I want to know how alignment of pump shaft is done with motor shaft. If your motor does not have a c or d end bell, one can be installed when the motor is rewound. Up to about thirtyhorse power 22 kw you hang the motor on the pump. The data validity rule 1 shown in following equation. It is highly recommended to check and, if necessary, correct pump motor alignment as part of the commissioning process, before the pump is placed in service. For appropriate applications, the time, expertise and instruments needed to achieve precision alignment tolerances of less than 0.
This will show you how much you need to move the motor for horizontal alignment. Motorpump alignment is the process of aligning shaft centerlines between a motor and a pump. Motor and pump alignment align the pump motor coupling to allow for efficient torque transfer to the pump. Machine alignment for maintenance personnel in drinking water and wastewater facilities. In some cases, the motor and pump are set up in a direct drive configuration. How to do the alignment for vertical pumps with motor. How to do the alignment for vertical pumps with motor pump. With a focus on the core alignment tasks, the tksa 11 is designed to be a very easytouse instrument that is especially suitable for alignment learners and compact applications. Before starting the pump the reservoir should be filled to the minimum level so as to completely sub merge the pump impeller housing in the liquid which assures priming of the pump. That pdr was completed in late 2009 and incorporates the alternate pipeline alignment in the ridle trail in addition to the original pipeline alignment along renshaw oulevard, as was recommended in the 2002 master plan. Typical alignment tolerances are summarized in table 1. Empowering pumps is the information and connection hub for the global pump industry. Second edition, revised and expanded, john piotrowski 99.
Angular misalignment an overview sciencedirect topics. A former engineer stated that the authors first edition contained more alignment information than the sum total of all other works in the library of congress. The advanced tools of the editor will direct you through the editable pdf template. With the focus on improving alignment practices, the skf shaft alignment tool, tksa 41, is one of the industrys best value alignment solutions. The primary reasons why machinery is misaligned is lack of proper training, improper tools to do the job, and that people are not given enough time to do it right. Although we will focus largely on the motor blower installations, the issues discussed apply to most types of rotating machinery. If a manufacturer of a machine or coupling require tighter alignment tolerances, those should be used. Laser alignment system shaft alignment tool tksa 41 skf. A guide to properly align and install vertical turbine pumps. Where to make shimming adjustments align the motor to the pump by shimming the motor feet soft foot problems. We have been in business over 40 years with over 50 years of combined work experience at the executive levels.
Excessive bearing loading, leading to bearing failure in both the pump and motor. The bent shaft affects alignment process by showing improper reading. We cant align our vertical pumps since there is no adjustment due the. Alignment is not required for pumps with the monoblock configuration. Alignment simple steps to accurate alignment its a long. Measure at intervals around the periphery of the couplings. Up to 50% of damage to rotating machinery is directly related to misalignment. The skf tksa 11 is an innovative shaft alignment tool that uses smartphones and tablets and intuitively guides the user through the shaft alignment process. Since the motor uses a cface flange, the motor is bolting axially into the flange. Pdf basic shaft alignment workbook for industrial rotatin. Achieving proper alignment, however, involves much more than merely adjustment the machines so that the shafts are coaxial. Proper alignment of the pump shaft with the driver can reduce vibration and significantly improve reliability. The ergonomic display unit with intuitive touch screen navigation makes your alignments fast and easy, whilst innovative features, like the free measurement, increase the alignment performance.
This is recommended to minimize the risk of overloading and damaging pump motor at full or. Shaft alignment training course ppt presentation and. Hence, this technique offers precise alignment and secure hold. Basic shaft alignment workbook preface w elcome to the introductory book on shaft. Vertical turbine pump vtp and driver alignment is critical for extending the serviceable life of the driver, pump bearings and mechanical seal assembly while also providing vibration free service of your installation. If, on the other hand, you update your knowledge of shaft alignment techniques and acceptable alignment tolerances, you might be on the way to becoming more reliabilityfocused. The motor is the prime mover, transferring power to the pump by. Under the indicator position mark the point that is 12 the indicator reading.
590 898 1178 472 194 1172 504 1125 482 97 1239 624 972 1006 582 778 824 739 272 704 1439 88 956 682 1132 1461 428 706 17 1322 694 306