Devising a method for ensuring the reliability of fire centrifugal pumps while reducing their weight and dimension characteristics by optimizing their structural elements

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.216625

Keywords:

fire centrifugal pump, housing, optimization mathematical model, reliability of fire pumps

Abstract

An algorithm for calculating the strength and reliability of centrifugal fire pump housings has been developed, aimed at determining the optimal mass-dimension parameters of centrifugal fire pumps. To this end, a method has been devised for determining the main indicators of reliability, an optimization mathematical model has been built, and an algorithm for solving the optimization problem using the Monte Carlo method has been developed. When devising a method for determining the main reliability indicators of centrifugal fire pumps, the strength and kinematic parameters have been taken into consideration, as well as an economic indicator of reliability and the costs of ensuring reliability. These indicators make it possible to establish the optimal consumption of materials for the manufacture of structural elements of centrifugal fire pumps that ensure their strength and reliability. When building the optimization mathematical model, a pump weight minimization was used as the objective function while the applied difference criterion makes it possible to take into consideration the economic indicator in the manufacture of centrifugal fire pumps and to reduce their cost. It was established that the principal indicator that affects the weight of a pump and the cost of its manufacture is the thickness of the pump housing wall. Based on the developed optimization mathematical model, the flowcharts of the algorithms have been constructed for solving it using the Monte Carlo method. The calculation results showed that the width of the PN-40 UV pump housing can be reduced by 1.18 from the rated one. Applying the optimization mathematical model in the process of designing fire centrifugal pumps makes it possible to reduce the pump weight by 9‒11 % while ensuring high reliability and reducing the cost of its production by 10 %

Author Biographies

Olena Vasiljeva, Lviv State University of Life Safety Kleparivska 35, Lviv, Ukraine, 79007

Doctor of Technical Sciences, Associate Professor

Department of Applied Mathematics and Mechanics

Ivan Pasnak, Lviv State University of Life Safety Kleparivska 35, Lviv, Ukraine, 79007

PhD, Associate Professor

Institute of Fire and Technogenic Safety

Artur Renkas, Lviv State University of Life Safety Kleparivska 35, Lviv, Ukraine, 79007

PhD

Department of Vehicle Operation and Fire-Rescue Techniques

References

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Published

2020-12-31

How to Cite

Vasiljeva, O., Pasnak, I., & Renkas, A. (2020). Devising a method for ensuring the reliability of fire centrifugal pumps while reducing their weight and dimension characteristics by optimizing their structural elements. Eastern-European Journal of Enterprise Technologies, 6(1 (108), 14–19. https://doi.org/10.15587/1729-4061.2020.216625

Issue

Vol. 6 No. 1 (108) (2020): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2020 Olena Vasiljeva, Ivan Pasnak, Artur Renkas

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