Modeling of the Turbine Rotor Journal Restoration on Horizontal Balancing Machines

Shchurova, A. V.

doi:10.1016/j.proeng.2016.07.134

Cited by 8 publications

(5 citation statements)

References 10 publications

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“…It is therefore no longer necessary to install as many magnets on the convex ring of the counterweight disc. A soft-iron block can be placed in the (6) remaining circumferential space to provide the driving force and improve the driving ability of the actuator.…”

Section: Principle Of Driving By Magnets and Soft-iron Blocksmentioning

confidence: 99%

“…Imbalance vibration, a typical failure mode of rotational machines, is caused by imbalanced mass distribution and has a significant negative effect on the efficiency, accuracy, and service life of the equipment. Dynamic balancing technology includes process balancing [6], on-site balancing [7,8], and active balancing [9][10][11][12][13]. Process dynamic balancing requires the use of a balancing machine, which is time consuming, laborious, and cannot readily ensure balance accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of Novel Electromagnetic-Ring Active Balancing Actuator with Radial Excitation

Pan

et al. 2021

Chin. J. Mech. Eng.

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Imbalance vibration is a typical failure mode of rotational machines and has significant negative effects on the efficiency, accuracy, and service life of equipment. To automatically reduce the imbalance vibration during the operational process, different types of active balancing actuators have been designed and widely applied in actual production. However, the existing electromagnetic-ring active balancing actuator is designed based on an axial excitation structure which can cause structural instability and has low electromagnetic driving efficiency. In this paper, a novel radial excitation structure and the working principle of an electromagnetic-ring active balancing actuator with a combined driving strategy are presented in detail. Then, based on a finite element model, the performance parameters of the actuator are analyzed, and reasonable design parameters are obtained. Self-locking torque measurements and comparative static and dynamic experiments are performed to validate the self-locking torque and driving efficiency of the actuator. The results indicate that this novel active balancing actuator has sufficient self-locking torque, achieves normal step rotation at 2000 r/min, and reduces the driving voltage by 12.5%. The proposed novel balancing actuator using radial excitation and a combination of permanent magnets and soft-iron blocks has improved electromagnetic efficiency and a more stable and compact structure.

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Section: Principle Of Driving By Magnets and Soft-iron Blocksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimal Design of Novel Electromagnetic-Ring Active Balancing Actuator with Radial Excitation

Pan

et al. 2021

Chin. J. Mech. Eng.

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“…Mesin balancing yang digunakan dengan tipe horizontal. Mesin balancing tipe horizontal mempunyai kelebihan untuk mendeteksi ketidakseimbangan dan memudahkan pada saat penambahan atau pengurangan massa pada rotor (Shchurova 2016 Tahapan dan proses balancing pada G 0.4 dilakukan sama seperti pada proses balancing G 6.3. Perbedaan yag signifikan yaitu pada proses pengurangan bobot massa pada pringan impeller dilakukan dengan lebih cermat, karena berat maksimum ketidakseimbangan yang diijinkan pada G 0.4 lebih kecil.…”

Section: Metodeunclassified

Metode Keseimbangan Bidang Tunggal Pada Proses Balancing Komponen Boiler Feed Pump Rotor

Harbintoro¹

2019

met. indonesia

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Proses balancing pada komponen berputar dilakukan untuk mengurangi getaran pada saat proses operasi. Getaran disebabkan oleh ketidakseimbangan massa yang terjadi jika sumbu utama inersia rotor tidak satu sumbu dengan sumbu geometrisnya.Proses balancing pada rotor umumnya banyak terdapat dalam sistem mekanis pada mesin turbo industri, mesin pembangkit listrik, alat pemesinan, dan mesin turbin gas pesawat terbang. ISO 1940-1 : 2003 Mechanical Vibration-Balance Quality Requirements for Rotor in a Constant (Rigid) State mendefinisikan kualitas keseimbangan untuk berbagai aplikasi dengan mendefinisikan sejumlah nilai kualitas keseimbangan untuk berbagai jenis rotor. Ketidakseimbangan residual untuk rotor didefinisikan dalam standar ini dalam notasi G. Penelitian ini bertujuan untuk melakukan balancing pada komponen boiler feed pump rotor dengan menggunakan dua grade (G) yang berbeda sesuai ISO 1940-1 : 2003. Pada penelitian ini digunakan metode balancing off line dengan kategori bidang tunggal pada komponen boiler feed pump rotor yang terdapat pada mesin pembangkit listrik. Berdasarkan hasil pengumpulan data, pada proses balancing dengan metode keseimbangan bidang tunggal pada komponen boiler feed pump rotor maka tingkat kualitas keseimbangan (G) yang dipilih akan sangat berpengaruh terhadap toleransi massa berat maksimum ketidakseimbangan yang diijinkan pada komponen boiler feed pump rotor. Dengan menggunakan balance quality grade G 6.3 massa berat maksimum ketidakseimbangan yang diijinkan yaitu 16.8 gram dan dengan menggunakan balance quality grade G 0.4 massa berat maksimum ketidakseimbangan yang diijinkan yaitu 1.064 gram.

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“…Balancing machines can be categorised into four types: horizontal, vertical, non-rotating, and high-speed balancing machines. Horizontal balancing machines [4,5] are equipped with bearing pedestals, making them suitable for rotors with two bearing positions. They can handle heavier parts like rotors, crankshafts, and industrial equipment, providing high balancing accuracy.…”

Section: Introductionmentioning

confidence: 99%

Advancing balancing machine technology: A cost-effective solution for laboratory and small-medium enterprises

Hassan,

Mohd Sanosi,

Othman

et al. 2023

JMES

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Small-medium enterprises (SMEs) that provide maintenance services to power plant companies, notably on rotor components, encounter a significant challenge in balancing. The main concern is the high cost associated with outsourcing balancing services. The absence of portable balancing machines requires transporting components back to the workshop, resulting in substantial downtime lasting weeks before reinstallation. This paper presents a DIY-compatible balancing machine design and its assembly process, which can be applied to various balancing processes. The design primarily emphasizes mechanical aspects, excluding measurement and instrumentation components, which can be obtained or developed based on the user's software proficiency. The actual expenditure for developing this balancing machine is approximately RM11,698.00. In the development process, benchmarking, concept scoring, functionality evaluations, dynamic analysis, and ideation for workable balancing machine concepts were all involved. The modal analysis demonstrates that the first natural frequency at 279.5 Hz (equivalent to 16,770 rpm) is significantly higher than the motor's excitation frequency, which reaches a maximum speed of around 2800 rpm (46.67 Hz). This result indicates that the dynamic behaviour of the balancing machine does not significantly affect the dynamic results of the rotor balancing process.

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Modeling of the Turbine Rotor Journal Restoration on Horizontal Balancing Machines

Cited by 8 publications

References 10 publications

Optimal Design of Novel Electromagnetic-Ring Active Balancing Actuator with Radial Excitation

Optimal Design of Novel Electromagnetic-Ring Active Balancing Actuator with Radial Excitation

Metode Keseimbangan Bidang Tunggal Pada Proses Balancing Komponen Boiler Feed Pump Rotor

Advancing balancing machine technology: A cost-effective solution for laboratory and small-medium enterprises

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