Tham khảo tài liệu 'know and understand centrifugal pumps episode 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Know and Understand Centrifugal Pumps Types of misalignment There are two basic types of misalignment angular and parallel. Within each of these basic types of misalignment there are combinations of both. These are the most common combinations Vcrtical angular misalignment Figure 10-2 Vertical parallcl misalignment Figure 10-3 Horizontal angular misalignment Figure 10 4- Horizontal parallel misalignment Figure 10-5 Combined angular and parallel misalignment Figure 10-2 and Figure 10-3 Side view of vertical angular and vertical parallel misalignment Figure 10-4 and Figure 10-5 Top view of horizontal angular and horizontal parallel misalignment Coupling with Excentric Bore Bore Not Perpendicular to Face Figure 10-6 and Figure 10-7 Misalignment can be transmitted through the couplings and coupling faces. 144 Pump and Motor Alignment Distorted Coupling Face Figure 10-8 Misalignment can be transmitted through the couplings and coupling faces. Alignment techniques There are a variety of shaft alignment procedures. The configuration and size of the equipment determines the best alignment method. Generally the driver or motor should be aligned to the pump. The motor shaft centerline should be shorter and brought up to the pump shaft centerline with shims or spacers. The pump is generally fixed and attached to the suction and discharge piping so it is almost impossible to move. The volute casing aids in supporting the piping so it should be fixed to a solid foundation without shims jack bolts or supports. Verifying the alignment of running equipment is critical to maintain the correct operation and reduce downtime. Most established alignment procedures call for the use of precision dial indicators to correct misalignment. Gaining popularity in industry is laser alignment technology. We ll cover this shortly. Among the most popular methods of alignment are Reverse Dial Indicator alignment. Rim and Face alignment. Straight Edge alignment. Laser Alignment. Reverse dial .
