SU513726A1 - Apparatus for controlling a slurry separation process - Google Patents

Description

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The invention relates to devices for regulating the process of separating the solid phase of suspensions in hydrocyclones and can be applied in the oil industry in the drilling of wells.

A device for regulating the separation process in an installation comprising a working hydrocyclone with a sensitive element installed in a sand pipe, a regulator, a comparison element connected to the sensitive element and a regulating body and a controlling body made in the form of a small hydrocyclone are known.

However, with the use of such a device, the separation of suspensions occurs poorly, especially in particles with a small value of the lower boundary grain.

In order to improve the quality of separation of the solid phase in the process of regulation in the proposed device, the control body is equipped with a sensitive element connected to the reference element.

Such an arrangement of the device makes it possible to control the change in the solids content in the purified suspension and, according to this change, produce a signal to control the regulator of the device for separating the suspension, thereby improving the quality of the separation itself.

The drawing shows a schematic picture of: the proposed device for controlling the separation of solid phase suspension Sensitive element 1, installed in P6SKOV nozzle of working hydrocyclone 2, is connected to sensitive element 3 of controlling body 4 through element of comparison 5, which in turn is connected to block of supporting pumps 6 through Regulatory body 7. The mucus pipe 8 of the working hydrocyclone is connected to the inlet pipe 9 of the controlling body. The inlet 10 of the working hydrocyclone is connected to the output of the block retaining pumps.

The operation of the device is as follows.

The suspension enters through the inlet 10 in the working hydrocyclone 2 from the retaining pumps 6. In the working hydrocyclone separation occurs. The solid-free suspension slurry enters the discharge nozzle 8. The solid phase rises to the sand nozzle. During rotation of the suspension, tangential forces of friction arise, which act on the wall of the hydrocyclop n on the sand pipe, which is made with the possibility of turning. Sand pipe acts on the force sensor, for example tepometric, which gives

signal dependent on the amount of the outgoing solid phase.

The suspension, cleared of solid particles, enters the drain pipe 8. Part of the suspension through the pipe 9 enters the control body 4, designed as a small hydrocyclone without overflow.

The entire part of the slurry entering the small hydrocycloidum, rotating, is directed to the sand pipe, creating a tangential viscous friction and causing it to rotate. The sand pipe of a small hydrocyclone in turn acts on the sensitive element 3 - a force sensor, for example, a strain gauge, the output of which is fed to the element of comparison 5. At the element of comparison 5, a mismatch signal equal to the difference of signals from sensitive elements 1 and 3 appears, which, acting on the regulator 7, changes the mode of operation of the block of support pumps 6, causing them to increase or decrease the head.

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The ratio of the signals from the sensing elements 1 and 3 of the working hydrocyclop 2 and the control body 4 is selected experimentally so that the solid phase particles larger than a given size are not fed into the drain connection 8 and the connection 9.

Claims (1)

Invention Formula A device for regulating the process of separating a suspension in an installation containing a working hydrocyclone with a sensitive element installed in a sand pipe, a regulating member, a comparison element connected to the sensitive element and a regulating member, and a controlling authority made in the form of a small hydrocyclone, characterized in In order to improve the quality of separation, the controlling body is equipped with a sensitive element connected to the reference element.