বুকে ব্যথা নিয়ে ফের হাসপাতালে সৌরভ, অবস্থা স্থিতিশীল
ফের অসুস্থ সৌরভ গঙ্গোপাধ্যায়। বুকে ব্যথা নিয়ে হাসপাতালে ভর্তি হলেন তিনি। ইএম বাইপাসের ধারে একটি বেসরকারি হাসপাতালে ভর্তি করা হয়েছে তাঁকে। পরিবার সূত্রে জানা গিয়েছে, মঙ্গলবার রাত থেকেই বুকে ব্যথা অনুভব করেন বিসিসিআই প্রেসিডেন্ট। বুধবার দুপুরে ব্যথা বাড়লে কোনও ঝুঁকি না নিয়ে তাঁকে হাসপাতালে নিয়ে যাওয়ার সিদ্ধান্ত নেওয়া হয়। ইতিমধ্যেই বাংলায় বিজপির কেন্দ্রীয় পর্যবেক্ষক কৈলাস বিজয়বর্গীয়কে ফোন করে সৌরভের স্বাস্থ্যের খোঁজ নিয়েছেন অমিত শাহ।
এ দিন গ্রিন করিডর করে হাসপাতালে নিয়ে যাওয়া হয় সৌরভকে। গাড়ি থেকে নেমে হেঁটেই হাসপাতালে ঢোকেন তিনি। সেখানে চিকিৎসক আফতাব খান, সপ্তর্ষি বসু এবং সরোজ মণ্ডলের পর্যবেক্ষণে রয়েছেন। ক্যাথ ল্যাবে ইতিমধ্যেই ডাক্তারি পরীক্ষা করা হয়েছে সৌরভের। তাঁর ইকো কার্ডিয়োগ্রাম এবং ইসিজি করা হয়েছে। বৃহস্পতিবার অ্যাঞ্জিয়োগ্রাম হবে। তবে এই মুহূর্তে তাঁর শারীরিক অবস্থা স্থিতিশীল বলেই জানা গিয়েছে। বুধবার চিকিৎসকদের পর্যবেক্ষণেই থাকবেন তিনি।
- কৃষক-আন্দোলনে-ফাটল-হিংসাত্মক-প
- ৩৯৮-কোটির-বিনিময়ে-সব্যসাচীর-সা
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Centrifuge Balancing: Ensuring Optimal Performance in Industrial Applications
The significance of centrifuge balancing in industrial operations cannot be overstated. Centrifuges are vital components in various sectors such as chemical, food, oil and gas, and pharmaceuticals. These machines take on numerous tasks, and their efficient operation at high speeds relies heavily on perfect balancing.
An imbalance in a centrifuge can lead to a multitude of issues. Firstly, it compromises product quality and increases waste. For example, an unstable centrifuge leads to inadequate component separation, resulting in flawed end products and squandered resources. In industries like food production, this could mean spoiling entire batches, causing both financial loss and reputational damage.
Moreover, an unbalanced centrifuge often experiences accelerated wear. Excessive vibrations can rapidly degrade bearings, shafts, and couplings. I recall a case where a minor imbalance led to an entire production line shutting down, affecting workflow and revenue. Additionally, these vibrations generate increased noise levels, causing discomfort and potential health hazards for employees.
Other consequences include uneven loads that heighten the risk of cracks in the centrifuge casing or loosening fastenings, prompting further malfunctions. It is concerning how often minor imbalances lead to significant equipment failures.
The Need for Dynamic Centrifuge Balancing
As centrifuge rotation speeds increase, the repercussions of operating without proper balancing become more severe. I once witnessed a plant incur massive expenses due to neglecting their balancing procedures, resulting in a catastrophic breakdown of an expensive centrifuge. Regular condition checks and proactive balancing are critical for extending equipment lifespan and avoiding costly downtimes.
Efficient Dynamic Balancing on Site
Dynamic balancing, performed directly at the centrifuge installation site using the machine??™s own support bearings, presents numerous advantages. One of the immediate benefits is time efficiency; there is no need for transportation and disassembly, allowing for rapid execution of the balancing process. I remember how we were able to save an entire day of production by employing this approach.
Additionally, this method ensures greater accuracy. Balancing the rotor in its operational bearings mitigates distortions that can occur if balancing is performed on a disassembled component. Avoiding these minor, yet vexing issues leads to improved operational efficiency.
Furthermore, minimal intervention is required in dynamic balancing, which reduces the need for complex assembly or disassembly, saving both time and resources. Ultimately, this on-site balancing achieves the lowest possible residual imbalance, ensuring the centrifuge operates flawlessly. After completing a dynamic balancing procedure, I had witnessed equipment function as if it were brand new.
Tools and Techniques for Effective Balancing
To evaluate the initial vibration levels and conduct balancing, we utilize the Balanset-1A vibration analyzer. This portable device is recognized for its precision, versatility, and user-friendliness, making it an essential tool for any balancing endeavor.
Steps for Balancing a Centrifuge Rotor
1. **Preparation**: Begin by installing vibration sensors perpendicular to the centrifuge rotor's rotation axis, one at the front and one at the rear. Secure a tachometer on a magnetic stand, ensuring it is stable.
2. **Initial Measurement**: Attach reflective tape to the rotor pulley and position the tachometer sensor to read revolutions. Then connect the vibration sensors and tachometer to the Balanset-1A device and launch the accompanying program on a laptop to recognize the connected sensors.
3. **Balancing Process**: In the program, select the two-plane balancing mode and input the rotor's name for report identification. Conduct an initial vibration level measurement after weighing and recording the test weight and its installation radius.
4. **Balancing Execution**: Install the test weight in the first plane and measure the vibration again to ensure a change exceeding 20%. Subsequently, switch the test weight to the second plane and perform another measurement.
5. **Correction and Verification**: The Balanset-1A program will provide instructions on necessary weights and angles for corrections in both planes. Adjust the rotor accordingly and conduct a final vibration measurement to confirm successful balancing.
6. **Completion**: After achieving optimal balance, remove all sensors and document the findings in a balancing report.
Adhering to Balancing Standards
It is crucial to comply with balancing standards, such as ISO 1940-1-2007, during centrifuge balancing. These standards outline acceptable vibration levels for different equipment classes. Stricter norms indicate higher balance requirements, ensuring efficient and reliable equipment operation while minimizing wear and tear, even under the most intense conditions.
Conclusion
Centrifuge balancing is an essential aspect of maintenance and operational efficiency. Ignoring this necessity can lead to accelerated wear, diminished productivity, and potentially catastrophic failures. Embracing regular balancing practices using advanced tools like the Balanset-1A facilitates safe and flawless equipment operation, which ultimately translates into significant savings in repair costs and production downtime. Prioritizing centrifuge balancing is not just advantageous; in the competitive industrial landscape, it is critically important.
Vibration Diagnostics: An Essential Guide
Vibration diagnostics is a vital process used to analyze and assess the efficiency of rotating machinery by identifying issues related to vibration. This technique is crucial in many industrial applications, including crushers, fans, augers, and turbines. Understanding the difference between static and dynamic balance is fundamental in vibration diagnostics, as it directly impacts machinery performance.
Understanding Static vs. Dynamic Balance
Static balance refers to the condition of a rotor that remains stationary. When the rotor's center of gravity is misaligned with its rotation axis, it creates a downward force at the "heavy point." This issue can usually be corrected by adding or removing mass in specific areas to align the center of gravity with the rotation axis. Static balancing is effective for narrow disk-shaped rotors to eliminate uneven mass distribution in one plane.
Conversely, dynamic balance occurs when the rotor is in motion. This state involves imbalances in different planes, producing not only downward forces but also additional vibrations as a result of moments. In this configuration, balancing requires specialized techniques using a vibration analyzer equipped with two-plane balancing capabilities. Dynamic balancing is particularly effective for long double-axle rotors, reducing unwanted vibrations during operation.
Dynamic Shaft Balancing Process
The dynamic balancing process utilizes advanced tools like the Balanset-1A, which can analyze vibrations in two planes concurrently. To initiate this process, operators first measure vibrations with installed sensors. These sensors capture the initial vibration data, which serves as a baseline for further analysis.
Step-by-Step Balancing Methodology
Angles and Weight Calculations
During the balancing process, measuring the angles related to weight positions is crucial for achieving optimal results. Operators use specific angles to determine where corrective weights should be placed to counterbalance the identified vibrations. This meticulous measurement allows for precision in balancing, ultimately enhancing rotor performance.
Applications of Vibration Diagnostics
The applications of vibration diagnostics are extensive. Industries that rely heavily on rotating machinery, such as manufacturing, agriculture, and power generation, benefit immensely from this technology. Equipment ranging from fans and augers to centrifuges and turbines can enhance their operational longevity and efficiency through effective vibration diagnostics.
Choosing the Right Vibration Analyzer
Selecting the appropriate vibration analyzer is fundamental in the process. The Balanset-1A, for instance, is a versatile portable unit designed specifically for two-plane dynamic balancing. Its capability to handle multiple rotor types makes it indispensable for various industries. Other instruments may include vibration sensors and optical sensors, all contributing to a comprehensive vibration diagnostics setup.
Importance of Routine Vibration Diagnostics
Conducting routine vibration diagnostics is essential for maintaining machinery in optimal condition. Regular assessments can identify potential issues before they escalate into significant problems, reducing downtime and repair costs. Industries that prioritize this procedure often experience higher efficiency and reliability in their operations.
Conclusion
In conclusion, vibration diagnostics is a crucial practice for ensuring the proper functioning of rotating machinery. Understanding the balance between static and dynamic conditions, coupled with strategic use of advanced tools like the Balanset-1A, can lead to significant improvements in machine performance. By prioritizing routine diagnostics and making informed choices regarding equipment and methods, industries can optimize their operations, enhance productivity, and ensure the longevity of their assets.