structure of desander
The desander system is made up of the screening system, the adjusting and supporting system, the aqueduct, the foundation, the pressure gauge as well as the desander hydrocyclones.
The desander is primarily and widely applied in the petroleum industry, the oil and gas drilling, the exploration industry, the trenchless engineering, the geotechnical engineering, mining, metallurgy, coal as well as the hydroelectric industry. KOSUN MACHINERY is a professional solids control solution company which specializes in solids control equipment and system.
Desander is generally divided into the drilling mud desander, the drilling fluids desander and the hydrocyclone desander.
The hydrocyclone desander is operated in accordance with the principle of centrifugal separation. Since the water inlet tube is installed at the eccentric position of the cylinder, the water will first form into the downward inclined fluid along the tangent direction of the cylinder when it enters into the inlet tube through the hydrocyclone desander. The water flow will go downward in the spinning direction and in turn rotate upward along the axis of the cylinder when it reaches a certain position of the cone. Finally, the water flow will get discharged through the outlet pipe. Under the influence of the inertial centrifugal force from the water flow and their own gravity, those sundries will drop into the cone refuse vessel at the bottom of the equipment. With such advantages as high efficiency in decontamination, small drag coefficient, convenience in sewage disposal and reliable performance, the hydrocyclone desander can realize trash cleaning in operation with the water pump open.
As an auxiliary device in the petroleum drilling, the drilling fluids desander is mainly used for eliminating the rock debris and sand carried by the drilling fluid from the stratum in the process of drilling operation. The drilling fluids desander is made up of the tube for liquid inlet, the cone bucket for sand draining as well as the sand draining mouth. There are rotating parts installed in the cone bucket for sand draining, the supporting wall of which is equipped with separating windows. The upper supporting wall, a set of tapered slot as well as the tube for liquid inlet of those rotating parts make up the ascending components for the drilling fluid. Vanes of the desander are placed at the inner bottom of the rotating component and the sand draining regulator controls the amount of the drained sand. The drilling fluid enters into the rotating component through the liquid inlet tube and goes through centrifugal rotation by vanes. Those sand grains get separated from the drilling fluid when the fluid ascends to the separating window, through which the grains will be drained into the cone bucket. The drilling fluid after separation will enter into the ascending component and then flow into the groove through the liquid outlet of the cone slot.
As one of the indispensable and important devices for stabilizing and regulating those technical indicators of the drilling fluid, the drilling mud desander has also been extensively used in the tertiary purification of the drilling fluid. As the combination of the hydrocyclone desander and the vibrating screen, the drilling mud desander is the three-level solids control equipment used in the solid control system of the drilling fluid. It is primarily made up of the vibrating screen, the distribution manifold as well as the hydrocyclones. The drilling mud desander is mainly used to remove the harmful solid phase with the granularity of more than 15 microns so as to ensure the good properties of the drilling fluid.
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