This work aims to design and develop a stationary, low-cost thrust bearing with a fixed segment carrier combined with an existing rotating carbon thrust pad for use in low horse power submersible motors intended for household applications. The thrust bearing serves as a critical component in submersible motors, providing stability and support while lifting water. Positioned at the bottom of the submersible motor, the thrust bearing must withstand the total axial load acting upon it. The carbon thrust pad comprises resin-mixed carbon, fixed within a casting or mild steel/stainless steel holder, while the thrust bearings are crafted from stainless steel. These materials possess different hardness and density properties. During motor switching, the thrust bearing is subjected to the total load, including hydraulic force. The contact between the holder containing the carbon thrust pad and the thrust bearing carrier surface during operation poses a risk of damaging the carbon surface, which could potentially impact the functionality of the submersible motor. However, it's worth noting that household low horse power submersible motors generally experience minimal thrust loads. In this study, solid-type thrust bearing segment carriers made of stainless steel 420 were utilized. Thrust bearing segment carrier is produced as a casted part using the investment casting process. Post-casting, the cast part undergoes machining, followed by vacuum hardening to achieve the hardness in between 48 and 56 HRC. The subsequent surface grinding and lapping process smoothens the surface roughness to meet the requirement. The surface finish maintained less than Ra 0.2 microns. The primary objective of this study is to reduce part costs by minimizing the number of components while maintaining the performance standards observed in standard fixed-type segments.

错误:搜索内容不能为空,请输入英文关键词
错误:关键词超出字数限制,请精简
高级检索

Design and Analysis of Low-Cost Thrust Bearing for Low Horse Power Submersible Motor

  • K. Ravi Kumar,
  • T. G. Arunkishore,
  • Sunil S. R. Gangolli

摘要

This work aims to design and develop a stationary, low-cost thrust bearing with a fixed segment carrier combined with an existing rotating carbon thrust pad for use in low horse power submersible motors intended for household applications. The thrust bearing serves as a critical component in submersible motors, providing stability and support while lifting water. Positioned at the bottom of the submersible motor, the thrust bearing must withstand the total axial load acting upon it. The carbon thrust pad comprises resin-mixed carbon, fixed within a casting or mild steel/stainless steel holder, while the thrust bearings are crafted from stainless steel. These materials possess different hardness and density properties. During motor switching, the thrust bearing is subjected to the total load, including hydraulic force. The contact between the holder containing the carbon thrust pad and the thrust bearing carrier surface during operation poses a risk of damaging the carbon surface, which could potentially impact the functionality of the submersible motor. However, it's worth noting that household low horse power submersible motors generally experience minimal thrust loads. In this study, solid-type thrust bearing segment carriers made of stainless steel 420 were utilized. Thrust bearing segment carrier is produced as a casted part using the investment casting process. Post-casting, the cast part undergoes machining, followed by vacuum hardening to achieve the hardness in between 48 and 56 HRC. The subsequent surface grinding and lapping process smoothens the surface roughness to meet the requirement. The surface finish maintained less than Ra 0.2 microns. The primary objective of this study is to reduce part costs by minimizing the number of components while maintaining the performance standards observed in standard fixed-type segments.