রাজ্যপাল-মুখ্যমন্ত্রী বিবাদ, রাজনৈতিক টানাপোড়েনে বিশ্ববিদ্যালয়ের আচার্য পদ
ডিজিটাল ডেস্কঃ এবার রাজ্যের সমস্ত সরকারি বিশ্ববিদ্যালয়ের আচার্য পদে রাজ্যপাল নয়, বসবেন মুখ্যমন্ত্রী মমতা বন্দ্যোপাধ্যায়। এ বিষয়ে খুব শীঘ্রই বিধানসভায় বিল আনতে চলেছে রাজ্য সরকার।
রাজ্যের শিক্ষামন্ত্রী ব্রাত্য বসু জানান যে মন্ত্রিসভার সকলের সম্মতিতেই বৃহস্পতিবার এই সিদ্ধান্ত নেওয়া হয়েছে। রাজ্য সরকারের এই আকস্মিক ঘোষণায় তোলপাড় রাজ্য রাজনীতি ও শিক্ষামহলের একাংশ। বিরোধীরা ইতিমধ্যেই সমালোচনায় বিদ্ধ করছেন মুখ্যমন্ত্রীকে। তাঁদের কথায়, মুখ্যমন্ত্রী পশ্চিমবঙ্গকে পৃথক রাষ্ট্র বলে মনে করেন। তাই অন্য রাজ্যগুলিতে যে নিয়মনীতি চলে, মুখ্যমন্ত্রী সেগুলি মানেন না। বরং নিজের মতো শাসন লাগু করেন। অন্যদিকে, রাজনৈতিক এই টানাপোড়েনের জেরে কি প্রভাব পড়বে পড়ুয়াদের উপর তা নিয়ে বেশ চিন্তায় শিক্ষকদের একাংশ।
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Dynamic Balancing: Understanding the Process and Importance
Dynamic balancing is a critical process used in various industries to ensure the smooth operation of rotating machinery. Unlike static balancing, which corrects imbalance when a rotor is stationary, dynamic balancing addresses the forces and moments that occur when the rotor is in motion. This makes it essential for the operational efficiency and longevity of equipment such as crushers, fans, turbines, and other types of rotors.
Difference Between Static and Dynamic Balance
To appreciate dynamic balancing fully, it is important to distinguish it from static balance. Static balance occurs when the center of gravity of a rotor is offset from its axis of rotation when stationary, causing an imbalance that must be corrected by adding or removing mass in specific locations. This correction typically works best for narrow, disk-shaped rotors.
In contrast, dynamic balance involves balancing two different mass displacements across different planes while the rotor is in motion. This type of imbalance leads to additional vibration during operation, which can result in wear and tear or even catastrophic failure of machinery. To correct dynamic imbalance, two compensating weights are strategically placed to provide a counteracting torque against the unbalance, effectively neutralizing the vibrations without necessarily being equal in weight to the original masses.
Dynamic Shaft Balancing Instruction
The process of dynamic balancing for rotating shafts typically employs specialized equipment, such as the Balanset-1A, which is capable of both measuring vibration and facilitating balancing work across two planes. This device is versatile enough to be utilized in various applications, ensuring effective measurement and correction of vibrations generated by different types of machinery.
Dynamic Balancing Process Overview
The dynamic balancing operation begins with initial vibration measurements. Vibration sensors are strategically placed on the rotor, connected to the Balanset device, which collects baseline data. After running the rotor, these measurements provide a necessary starting point for further evaluation.
Next, a calibration weight is introduced to the rotor in the first plane. The purpose of this weight is to evaluate how its addition alters the vibration pattern. The Balanset analyzer records the changes in vibration, which is crucial for understanding the initial imbalance and will guide the subsequent actions.
Once the calibration weight has been evaluated, it is moved to a different position, and vibrations are measured again. This process assists in determining the effective points for corrective weight application. The collected data through this method enables an informed decision on how to proceed with achieving a balanced state.
After analyzing all gathered data, final corrective weights are placed at the calculated points on the rotor. Once these weights are installed, the rotor is run again to check the effectiveness of the balancing process. A successful balancing operation will be confirmed when the vibration levels have normalized, indicating that the equipment can now operate more smoothly and efficiently.
Importance of Corrective Weights and Their Placement
The placement of corrective weights plays a crucial role in dynamic balancing. For effective balancing, measurements must account for the angles in which these weights are applied to counteract the unbalanced forces. The direction of rotation is taken into consideration, and precise calculations determine where these weights need to be implemented.
When detailing the angle measurements for corrective weights, operators identify the trial weight's initial positioning and determine the required angle to install correction weights. This meticulous approach ensures that vibrations are effectively reduced.
Two-Plane Balancing System
Employing a two-plane balancing method is vital for handling complex rotor designs where mass is distributed unevenly across multiple planes. This approach is standard in balancing rotors such as those used in fans, mulchers, and turbines. The two-plane balancing technique ensures that corrections can effectively neutralize vibration forces generated by unbalanced rotational masses, ultimately enhancing the operational stability and extending the lifespan of the equipment.
Benefits of Dynamic Balancing
Successful dynamic balancing offers numerous advantages. Primarily, it significantly reduces vibration levels, which can lead to a quieter operation and improved performance. Secondly, by minimizing excessive wear on bearings and components, dynamic balancing can reduce maintenance costs and downtime due to repairs. Additionally, equipment running with balanced rotors tends to have higher efficiency, translating into energy savings and increased productivity.
Moreover, maintaining proper balance in rotating machinery directly influences safety, as excessive vibrations can lead to mechanical failure and accidents. Thus, implementing dynamic balancing is not only an operational necessity but also a crucial aspect of workplace safety.
Conclusion
Dynamic balancing is an essential practice in ensuring that rotating systems function reliably and efficiently. By understanding the fundamental differences between static and dynamic imbalance, operators can implement effective balancing techniques utilizing advanced tools like the Balanset-1A. The process of measuring vibrations, installing corrective weights based on careful analysis, and ensuring two-plane balance forms the foundation for maintaining optimal machine performance.
As industries strive for higher efficiency and lower operational costs, the significance of dynamic balancing becomes increasingly evident. It not only leads to enhanced machinery lifespan but also contributes to a safer and more productive working environment.
Article taken from https://vibromera.eu/