নতুন শেন ওয়ার্ন খুঁজতে এখন জলন্ধরে ছিপ ফেলেছে অস্ট্রেলিয়া
নতুন শেন ওয়ার্ন খুঁজতে এখন জলন্ধরে ছিপ ফেলেছে অস্ট্রেলিয়া
January 28, 2021, 6:29pm
খেলা
শেন ওয়ার্নের পরে সে ভাবে আর প্রতিভাবান লেগ-স্পিনার খুঁজে পায়নি অস্ট্রেলিয়া। অ্যাডাম জাম্পাকে নিয়ে হইচই হলেও তিনি প্রত্যাশা পূরণ করতে পারেননি। অস্ট্রেলিয়ার নজরে পরবর্তী শেন ওয়ার্ন এখন জলন্ধরের এক তরুণ। আগামী মাসে নিউজিল্যান্ডের বিরুদ্ধে টি-টোয়েন্টি সিরিজে সুযোগ পেয়েছেন ভারতীয় বংশোদ্ভুত তনবীর সাঙ্ঘা।
চলতি বিগ ব্যাশ লিগে সিডনি থান্ডারের হয়ে খেলেছেন তনবীর। আবির্ভাবেই ২১টি উইকেট নিয়ে তৃতীয় সর্বোচ্চ উইকেটশিকারী হয়ে গিয়েছেন। ছাপিয়ে গিয়েছেন রশিদ খান এবং জাম্পাকেও। শুধু তাই নয়, অ্যারন ফিঞ্চ, পিটার হ্যান্ডসকোম্ব এবং ক্রিস লিনের মতো দাপুটে ব্যাটসম্যান রয়েছেন তাঁর উইকেট তালিকায়।
Keywords : Tanveer Sangha
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Centrifuge balancing is an essential practice in various industrial sectors, including chemical, food, oil and gas, and pharmaceuticals. Centrifuges, being pivotal in these industries, perform numerous tasks efficiently. However, their performance hinges on optimal balancing, which directly affects their operational efficiency and longevity.
The repercussions of neglecting centrifuge balancing can be significant. An unbalanced centrifuge can lead to reduced product quality and increased waste, as instability can impair component separation, resulting in degraded final products. For example, in the food sector, an imbalance can spoil entire batches, ultimately affecting profitability. Furthermore, excessive vibration caused by imbalances accelerates the wear of crucial components such as bearings, shafts, and couplings. This wear can result in catastrophic failure, as witnessed in a specific production line that was halted due to such neglect.
In addition to mechanical wear, increased vibration leads to elevated noise levels, creating an uncomfortable, and often hazardous, work environment. The potential of vibration-related issues extends to uneven loads, which can cause cracks in the centrifuge casing and lead to further malfunctions. Minor imbalances, if left unchecked, can culminate in severe equipment damage that could have been easily avoided.
The importance of dynamic centrifuge balancing becomes even more pronounced at higher rotational speeds. In one instance, a facility suffered catastrophic failure due to their disregard for balancing protocols. Incorporating regular condition checks and preventive balancing measures not only supports equipment longevity but also prevents costly breakdowns and minimizes unexpected downtimes.
Dynamic balancing is optimally conducted at the installation site of the centrifuge, eliminating the need for transportation or disassembly. This method boasts several benefits: it is quicker, as it circumvents the time lost during transport and reassembly; it is more accurate, since balancing in the operating bearings avoids distortions associated with removing components; and it requires minimal intervention, thus conserving resources. The results are remarkable; after conducting dynamic balancing, many report that their centrifuges operate as if they were brand new.
In terms of tools required, the Balanset-1A vibration analyzer serves as a specialized device for measuring initial vibration levels and executing the balancing process itself. Its precision, versatility, and user-friendliness make it a preferred choice for many industrial applications. To effectively balance a centrifuge rotor, several steps are necessary. First, vibration sensors must be installed perpendicular to the rotor's rotational axis at both the front and back sides. A tachometer should be securely placed to measure the revolutions accurately, while ensuring that reflective tape is attached to the rotor pulley to facilitate the tachometer's readings.
Once the sensors and tachometer are connected to the Balanset-1A device, the user prepares the equipment, setting up the program accordingly. This involves weighing a test weight and recording its installation radius before starting the centrifuge rotor to conduct the initial vibration measurement. Balancing in two different planes is crucial: the first involves installing the test weight on the side where the first vibration sensor is located; subsequent measurements must show a minimum change of 20% in vibration levels. In the second plane, after adjusting the test weight, further measurements are taken to ensure proper balancing has occurred.
Following the measurements, the Balanset-1A program provides recommendations on the necessary weight adjustments and angles for installation in both planes. These corrective weights are then installed as directed. It is imperative to conduct a final vibration measurement to confirm that balancing has succeeded; if further adjustments are required, the process is repeated until optimal balance is achieved.
Recording the balancing results and removing all equipment used during the process marks the end of balancing operations. This meticulous documentation is essential for continuous improvement and adherence to industry standards. Following standards such as ISO 1940-1-2007 is non-negotiable, as they stipulate acceptable vibration levels for various classes of machinery. Adhering to these standards not only enhances operational efficiency but ensures reliability and minimizes wear under intense operational conditions.
In conclusion, the practice of centrifuge balancing transcends mere maintenance; it is a critical requirement for preserving equipment integrity and optimizing productivity. The ramifications of neglecting this process can range from accelerated wear and diminished productivity to catastrophic equipment failures. Employing modern devices like the Balanset-1A for regular balancing ensures that centrifuges operate safely and efficiently, resulting in substantial savings on repairs and reducing downtimes in production.
Centrifuge balancing is not merely an option; it is a necessity for maintaining high operational standards in any industry reliant on centrifuge technology. Regular attention to balancing can yield dividends that far surpass the initial investment in the necessary tools and procedures.
Article taken from https://vibromera.eu/