HYDRODYNAMIC PROCESSES WITH LOW DOSING BY POSITIVE DISPLACEMENT (PD) PUMPS
UDC: [622.868.42:691.5]:62-189.2
DOI: 10.33285/0130-3872-2021-9(345)-15-18
Authors:
SHAIDAKOV VLADIMIR VLADIMIROVICH 1,
SHESTAKOVA EVGENIA VLADIMIROVNA 1,
BARABANOV ALEXEY ALEXANDROVICH 1
1 Ufa State Oil Technical University, Ufa, Russian Federation
Keywords: dosing pump, ball valve, small feed, mathematical model, dosing of chemical reagents, consumption coefficient, uneven feed, compression ratio
Annotation:
The paper considers the problem of chemical reagents low dosage as applied to oil and gas production facilities. A two-dimensional mathematical model of volumetric dosing by a plunger pump with ball valves is proposed. The dynamic problem of movement of the system main elements, such as plunger, valves, fluid is solved. The results of the change in the Reynolds number, flow rate and compression coefficients are obtained depending on the pumped liquid speed and the movement of the valve ball. The pulsating movement of the discharge valve ball is established when it is opened. A hypothesis is put forward about the influence of the hydrodynamic processes in the valve assembly on the unevenness of the pump flow and its unstable operation under conditions of ultra-low flow rates. The use of hydraulic diodes is recommended.
Bibliography:
1. Гидравлика, гидромашины и гидроприводы: учеб. для машиностр. вузов / Т.М. Башта, С.С. Руднев, Б.Б. Некрасов [и др.]. - 4-е изд., стереотип., перепечатка со 2-го изд. 1982 г. - М.: Изд. дом Альянс, 2010. - 423 с.
2. Гутров М.А. Уравнения движения кривошипно-ползунного привода режущего аппарата жаток с учётом кинематики шатуна // Достижения науки и техники АПК. - 2010. - № 2. - С. 66-69.
3. Baek-Hyun Cho, Hyoun-Woo Lee, Jung-Sun Oh. Estimation technique of air content in automatic transmission fluid by measuring effective bulk modulus // Int. J. of Automotive Technology. - 2002. - Vol. 3, Issue 2. - P. 57-61.
4. Duqiang Wu, Burton R., Schoenau G. An empirical discharge coefficient model for orifice flow // Int. J. of Fluid Power. - 2002. - Vol. 3, Issue 3. - P. 13-19. - DOI: 10.1080/14399776.2002.10781143
Back to issue