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<h1>What methods are used for balancing a steam turbine?</h1>
<p>When it comes to balancing a steam turbine rotor, the process involves utilizing the Balanset-1A device from Vibromera. This device facilitates several key stages, from equipment preparation to the installation of corrective weights.</p>
<p><strong>Equipment Preparation:</strong></p>
<p>Begin by positioning vibration sensors perpendicular to the rotor's axis of rotation. Secure a laser tachometer on a magnetic stand, directing it towards a reflective tape attached to the pulley. Connect the sensors to the device and link the device to a laptop via USB. Launch the Balanset software, selecting the two-plane balancing mode.</p>
<p><strong>Initial Vibration Measurement:</strong></p>
<p>Prior to commencing the balancing process, hang a test weight and record its weight and installation radius. Start the rotor and measure the initial vibration level to determine the amplitude and phase of the original imbalance.</p>
<img src="https://vibromera.eu/wp-content/uploads/2024/03/5969837695301697405_121.jpg">
<p><strong>Balancing in the First Plane:</strong></p>
<p>Place the test weight in the first balancing plane, aligning it with the position of the first sensor. Run the rotor to measure the vibration level. It's crucial that the amplitude or phase changes by at least 20%, indicating partial correction of the imbalance.</p>
<img src="https://vibromera.eu/wp-content/uploads/2024/03/5969837695301697404_121.jpg">
<p><strong>Balancing in the Second Plane:</strong></p>
<p>Move the test weight to the second plane (where the second sensor is located), restart the rotor, and conduct measurements. These data assist the program in calculating the precise position and weight of the corrective weights.</p>
<img src="https://vibromera.eu/wp-content/uploads/2024/03/5969837695301697403_121.jpg">
<p><strong>Imbalance Correction:</strong></p>
<p>Based on the acquired data, the Balanset program suggests corrective weights and their installation angles for both planes. Remove the test weight, prepare the corrective weights as per the program's recommendations, and install them at the required angles in the rotor's rotation direction from the initial test weight position.</p>
<img src="https://vibromera.eu/wp-content/uploads/2024/02/Bs1ManualEngV156-May2023-10448541.png">
<img src="https://vibromera.eu/wp-content/uploads/2024/03/5969837695301697402_121.jpg">
<p><strong>Verification and Completion of Balancing:</strong></p>
<p>Initiate the rotor to conduct a final balancing check. If the vibration decreases to an acceptable level, the process is complete. If further correction is necessary, the program will indicate where and how much additional weight to install.</p>
<p><strong>Recommendation:</strong></p>
<p>Prior to utilizing the device for balancing, ensure the absence of significant static imbalance. For horizontally positioned axis rotors, manually rotate the rotor by 90 degrees from its current position. If the rotor is statically unbalanced, it will move towards equilibrium. After the rotor reaches equilibrium, place a balancing weight at the top of the rotor, approximately in the middle along its length. This preliminary balancing minimizes vibration during initial startups of highly unbalanced rotors.</p>
<p><strong>Single and Two-Plane Balancing:</strong></p>
<p>The number of balancing planes depends on the rotor's design characteristics. Single-plane balancing (static) is typically for narrow disc-shaped rotors without substantial axial runout. Examples include grinding wheels, pulleys, flywheels, gears, clamping chucks, narrow fans, and more. Two-plane balancing (dynamic) is for long (shaft-like) two-bearing rotors, such as electric motor and generator rotors, compressor and pump rotors, turbine and fan impellers, wide grinding wheels, spindles, mill shafts with beaters, and others.</p>
<p><strong>Device Kit:</strong></p>
<ul>
<li>Vibration transducers – 2 pieces</li>
<li>Phase angle sensor (laser tachometer) – 1 piece</li>
<li>Measurement block (Balanset device) – 1 piece</li>
<li>Magnetic stand – 1 piece</li>
<li>Electronic scales – 1 piece</li>
<li>Transportation case – 1 piece</li>
<li>Software on a flash drive – 1 piece</li>
</ul>
<p><strong>Price:</strong> 1751 euros</p>
[b]Contact Information:[/b]
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