Analytical Study of Operational Properties of a Plate Shock Absorber of a Sucker-Rod String

Sucker-rod pump plant operation is accompanied by inertial and shock loads, affecting the fatigue strength of sucker rods and causing possible accidents. This work proposes the original design of a shock absorber of a sucker-rod string. The peculiarity of the proposed design is the usage of thin pla...

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Bibliographic Details
Published in:Shock and vibration 2020, Vol.2020 (2020), p.1-7
Main Authors: Velychkovych, Andrii, Ropyak, Liubomyr, Petryk, Ivan
Format: Article
Language:English
Subjects:
Accidents
Analysis
Bearing
Design
Elastic deformation
Fatigue strength
Friction
Hydraulics
Kinematics
Load
Mathematical analysis
Mathematical models
Petroleum production
Pumping machinery
Rigidity
Shock absorbers
Shock loads
Strain analysis
Strings
Thin plates
Vibration
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Summary:Sucker-rod pump plant operation is accompanied by inertial and shock loads, affecting the fatigue strength of sucker rods and causing possible accidents. This work proposes the original design of a shock absorber of a sucker-rod string. The peculiarity of the proposed design is the usage of thin plate packages as a bearing elastic element of the shock absorber. This approach to the elastic element’ design provides the shock absorber to be easy to manufacture and operate. Sucker-rod string protection from extra load will increase the sucker-rod pump plant efficiency in general. This study aims at developing shock absorber’s design and studying its most important performance options—strength and rigidity. A mechanical and mathematical model of a shock absorber’s elastic element was developed in order to specify its deformation. A package of thin plates was modelled as an equivalent solid plate with a cylindrical rigidity providing equal properties of the solid model and the plate package. This model makes possible to describe analytically the stress-strain state of the shock absorber bearing elements. The work presents the final expressions of the shock absorber’s strength and rigidity assessing in a convenient form for engineering practice. The numerical approbation of the obtained analytical results was carried out as the case of a plate elastic element. The authors give recommendation on the bearing unit’s design of the shock absorber.
ISSN:1070-9622
1875-9203
DOI:10.1155/2020/3292713