Abstract
The possibility of applying the methods of active damping of vibration and pressure pulsations for reducing their transfer from power plants into the environment, the seating, and the industrial premises are considered. The results of experimental works implemented by the authors on the active broadband damping of vibration and dynamic forces after shock-absorption up to 15 dB in the frequency band up to 150 Hz, of water pressure pulsations in the pipeline up to 20 dB in the frequency band up to 600 Hz, and of spatial low-frequency air noise indoors of a diesel generator at discrete frequency up to 20 dB are presented. It is shown that a reduction of vibration transfer through a vibration-isolating junction (expansion joints) of pipelines with liquid is the most complicated and has hardly been developed so far. This problem is essential for vibration isolation of power equipment from the seating and the environment through pipelines with water and steam in the power and transport engineering, shipbuilding, and in oil and gas pipelines in pumping stations. For improving efficiency, reducing the energy consumption, and decreasing the overall dimensions of equipment, it is advisable to combine the work of an active system with passive damping means, the use of which is not always sufficient. The executive component of the systems of active damping should be placed behind the vibration isolators (expansion joints). It is shown that the existence of working medium and connection of vibration with pressure pulsations in existing designs of pipeline expansion joints lead to growth of vibration stiffness of the expansion joint with the environment by two and more orders as compared with the static stiffness and makes difficulties for using the active methods. For active damping of vibration transfer through expansion joints of pipelines with a liquid, it is necessary to develop expansion joint structures with minimal connection of vibrations and pulsations and minimal vibration stiffness in the specified frequency range. The example of structure of such expansion joint and its test results are presented.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
A. G. Kostyuk and O. A. Volokhovskaya, “Vibration activity evaluation of double-span rotor at rundown caused by its initial curvature and residual unbalance,” Therm. Eng. 64, 37–45 (2017). doi 10.1134/ S0040601517010049
M. E. Skarednov, “Effective vibration protection of turbine unit foundations at power plants,” Gazoturbinnye Tekhnol., No. 8, 32–36 (2016).
A. V. Kiryukhin, V. A. Tikhonov, A. G. Chistyakov, and V. V. Yablonskii, “Active vibration protection — Purpose, Principles, State. 1, Purpose and principles of the development,” Probl. Mashinostr. Avtom., No. 2, 108–111 (2011).
A. V. Kiryukhin, V. A. Tikhonov, A. G. Chistyakov, and V. V. Yablonskii, “Active vibration protection — Purpose, Principles, State. 2. History of the development and the state,” Probl. Mashinostr. Avtom., No. 3, 63–69 (2011).
A. V. Kiryukhin, V. A. Tikhonov, A. G. Chistyakov, and V. V. Yablonskii, “Active vibration protection — Purpose, Principles, State. 3. Active vibration insulation in cars,” Probl. Mashinostr. Avtom., No. 2, 56–59 (2012).
A. V. Kiryukhin, V. A. Tikhonov, A. G. Chistyakov, and V. V. Yablonskii, “Active vibration protection — Purpose, Principles, State. 4. Active vibration and noise insulation of pipelines. Theoretical and experimental studies,” Probl. Mashinostr. Avtom., No. 1, 72–80 (2013).
A. V. Kiryukhin, V. A. Tikhonov, A. G. Chistyakov, and V. V. Yablonskii, “Active vibration protection — Purpose, Principles, State. 5. Active vibration and noise insulation of pipelines. Patent studies,” Probl. Mashinostr. Avtom., No. 3, 125–131 (2013).
G. N. Kuznetsov, A. V. Kiryukhin, V. A. Fedorov, E. S. Belogubtsev, S. G. Mikhailov, A. A. Pudovkin, and D. A. Smagin, “Problems and preliminary results of testing of active low-frequency signal damping systems in water and air media,” Fundam. Prikl. Gidrofiz. 4, 93–107 (2011) [in Russian].
V. I. Popkov and S. V. Popkov, Oscillations of Mechanisms and Constructions (Sudarynya, St. Petersburg, 2009) [in Russian].
R. F. Ganiev, Non-Linear Resonances and Catastrophes. Reliabillity, Safety, Noiselessness (Dynamika, Moscow, 2013) [in Russian].
A. Kiryukhin, O. Milman, and A. Ptakhin, “A search for the physical principles of improving the power unit pipeline expansion joint with fluid vibro-isolating properties,” Int. J. Appl. Eng. Res. 11, 11176–11183 (2016). https://www.ripublication.com/ijaer16/ ijaerv11n23_12.pdf.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.V. Kiryukhin, O.O. Milman, A.V. Ptakhin, 2017, published in Teploenergetika.
Rights and permissions
About this article
Cite this article
Kiryukhin, A.V., Milman, O.O. & Ptakhin, A.V. Reducing vibration transfer from power plants by active methods. Therm. Eng. 64, 912–919 (2017). https://doi.org/10.1134/S0040601517120047
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040601517120047