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Experimental Study of the Effectiveness of a Combined Closure of the End Gate Pipeline Valve

Herasymov Henrikh H., Gerasimov Ievgenii G., Ivanov Sergiy Y., Pinchuk Oleg L.

Archives of Hydro-Engineering and Environmental Mechanics

2019

Vol. 66, nr 1-2

3--13

One of the ways to ensure a reliable operation of irrigation systems is to protect them from water hammer (hydraulic shock) damage that occurs when starting or stopping a pumping station. This can be achieved by creating conditions in which a water hammer will not occur in the pressure pipeline as a result of closing the end gate valve (EGV). The aim of the present study was to investigate processes occurring in the pipeline during a linear closure of the EGV, during a closure with one break point and during an intermittent closure, as well as to verify the effectiveness of a combined end gate valve closure of the pipeline. Based on experimental data and calculations, the article recommends a linear closure of the EGV with one break point.

Automated installation for the research of frictional fatigue of the materials in the conditions of the rolling with sliding

Bezyazichny V. F., Zamyatin A. Ju., Zamyatin V. Ju.

Problemy Eksploatacji

1998

nr 3

41-46

Requirements to the installation for testing frictional fatigue of the materials in the conditions of rolling with sliding simultaneously were formulated. The initial reasons accepted at the installation design are stated. Arrangement and principle of work of the created installation is described.

Sformułowano wymagania stawiane urzadzeniom do badania zmęczenia ciernego materiałów w warunkach jednoczesnego toczenia z poślizgiem. Podano wstępne założenia przyjęte przy konstruowaniu. Opisano układ i zasadę pracy wytworzonego urządzenia.