SU932096A1 - Apparatus for preparing high-paraffin oils for pumping - Google Patents

Description

The invention relates to oil and petrochemical production, and more specifically to devices for. preparing high-paraffin oils for pumping during transportation via pipelines, as well as reducing the initial shear stresses in structured liquids at lower temperatures.

A device is known that contains a holder fixed at the end of the waveguide, the internal cavity of Kuiora has an annular track run-in with a ball, and nozzles for supplying compressed air, the nozzles being placed on the inlet pipe installed by the BHyfpH holder, and the nozzle axes are located in the plane of the waveguide 1

A disadvantage of the known device is that the presence of a flat waveguide allows for the oscillations of the surface being cleaned only in any one plane (along or across the stream). For the same reason, the driving force is unevenly distributed around the perimeter of the pipeline. In addition / ball impact with traction.

Both are carried weakly stressed character.

The chain of the invention is a reduction in adhesion. Due to the creation of oscillations (including impact) of the surface in two planes and a uniform distribution, I force 1 (its force around the perimeter of the pipeline.

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This goal is achieved by the fact that the waveguide is designed as a hollow cylinder and is installed inside the casing, and the nozzles are placed at an angle to the axis of the waveguide.

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Figure 1 is a dasscheme device; figure 2 - section aa in figure 1.

The device contains a waveguide 1, made in the form of a hollow cylinder, to which at an angle of up to 90 rigidly

20, flanges 2 with holes and an annular collector 3 with radially n-bent nozzles 4 are attached. Compressed air is fed into the collector through pipe 5.

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The manifold and the flanges are closed by the clip 6, along the annular track of which the hollow ball 7 with the hole is moving. In this case, the axis of the ball hole is offset relative to the geometrically.

Claims (1)

30 axis of the ball, which leads to the production of elastic vibrations, which are transmitted from to the cylindrical waveguide and the entire pipeline to be processed with it. The flanges are fastened to the holder with bolts 8. The nozzle axles are inclined to the axis of the cylinder waveguide at an angle in the direction of the air outlet. The gap between the bottom edge of the nozzle and the surface of the racetrack should be 2–3 mm larger than the ball diameter. The device works as follows. Compressed air at a pressure of 3–4 atm is supplied through the nozzle 5 into the channel of the annular collector 3 through nozzles 4 and drives the hollow ball 7, which simultaneously rotates both around its own axis and around the waveguide.1 moving along the cage track b. The elastic vibrations arising in the cage b due to the impacts of the ball 7 on its treadmill are of a shock nature, driven by both the high speed of movement and rotation of the ball, and the displacement of its center of gravity. The oscillations are transmitted to the cylindrical waveguide and the pipeline rigidly bonded to it, destroy the crystal screen of structured frozen liquids in the boundary layer and drastically reduce the adhesion to the wall of the pipeline. The use of constant oscillations contributes to a sharp decrease in the structure formation near the wall. The parameters of vibration treatment, namely, the frequency, amplitude and level of vibration accelerations, are determined by the geometrical dimensions of the device, the pressure and the flow rate of compressed air. The effective frequency range of the device is within the limits of 200500 Hz. The amplitude of oscillation of the emitter is chosen in the range of 10-1000 μm, the level of vibration accelerations - in the range of 100-150 dB. Installing the proposed devices on the introductory sections of the heating furnaces for high-paraffinic oils, as well as on the straight sections of the main pipelines, will dramatically reduce the shear pressures during start-up conditions when the oil is cooled to temperatures lower than the solidification temperature, and also to reduce the pressure when pumping high-paraffinic oils through main pipelines. Claims An apparatus for preparing high-paraffinic oils for pumping, comprising a waveguide with a yoke, on the inner surface of which a ring track is run-in, rolled around with a hollow ball, and nozzles for supplying compressed air placed on an inlet-mounted inlet pipe, different in that In order to reduce adhesion, the waveguide is made in the form of a hollow cylinder and installed inside the cage, and the nozzles are placed at (angle to the axis of the waveguide. Sources of information taken into account during the examination 1. And Secondary USSR certificate 480898, class F 27 G 7/00, 1973.