RU2203384C2 - Facility to prepare solutions - Google Patents

Abstract

FIELD: preparation of technological solutions in oil and gas industry under conditions of low temperatures. SUBSTANCE: facility has body, hopper, hydraulic drive in the form of hydraulic turbine engine which shaft has cavity for fluid used in turbine of given engine to pass and screw put on this shaft. Facility is fitted with ejector, which ejection chamber communicates with cavity in shaft and hopper. Facility is also equipped with mechanical crusher comprising knives and perforated disc. Knives are installed on shaft of engine. Perforated disc is fixed in ejection chamber. Ejector is formed by diffuser combined with mixing chamber and nozzle in butt of shaft of engine. EFFECT: raised productivity of facility and efficiency of dispersion of solution thanks to increased intensity of supply of reagents of dispersed phase into ejection chamber with advanced comminution of lumps of powdery reagents and elastic fibers. 1 dwg

Description

 The invention relates to devices for the preparation of technological solutions in the oil and gas industry at low temperatures. At low temperatures, a large number of reagents that are used as the dispersed phase turn into a gel and pasty state, form elastic fibers, and powdered reagents form lumps when moisture enters, making it difficult to feed them into the ejection chamber and worsen the conditions for their dissolution and dispersion.

 A device is known for introducing soluble solid material into a fluid stream comprising a hydraulic ejector, a loading tube, a funnel, and an airtight chamber. Part of the working fluid enters the sealed chamber and flows through the slot through the funnel. At the same time, a thin-layer high-speed hydraulic cushion is created on the walls of the funnel, which destroys and partially dissolves the solid material located in the funnel and carries it into the ejection chamber [1].

 The disadvantages of this device are the low efficiency of the preliminary grinding and feeding of slow-moving reagents into the ejection chamber.

 Closest to the proposed, in technical essence, is a device for mixing highly viscous polymers with a solvent, containing a hopper, a housing, a hydraulic actuator in the form of a hydraulic turbine engine, the shaft of which has a cavity to allow the passage of fluid spent in the turbine of this engine, and a screw mounted on it shaft [2].

 The disadvantage of this device is the low efficiency of preliminary grinding of sedentary reagents forming lumps and elastic fibers, which can lead to clogging of the slit-like mixing chamber with these reagents, and, as a result, low productivity of devices and the efficiency of dispersing the solution.

 The problem to which the invention is directed, is to increase the productivity of the device and the dispersion efficiency of the solution by increasing the intensity of the feed of the dispersed phase reagents into the ejection chamber with preliminary grinding of lumps of powdery reagents and elastic fibers.

 To solve this problem, the known device for mixing highly viscous polymers with a solvent, including a hopper, a housing, a hydraulic actuator in the form of a hydraulic turbine engine, the shaft of which has a cavity to allow the passage of fluid spent in the turbine of this engine, and the screw installed on this shaft is equipped with a hydraulic an ejector, the ejection chamber of which is connected with the cavity of the shaft and the hopper, and a mechanical crusher consisting of knives mounted on the motor shaft, and a perforated disk, zafi densed in the ejection chamber, and an ejector diffuser is formed, aligned with the mixing chamber and a nozzle on the end of the motor shaft.

 Providing the device with a hydraulic ejector allows practically avoiding clogging of the mixing chamber with dispersed phase reagents due to its cylindrical shape and increased internal diameter, as well as creating a vacuum in the ejection chamber, the cavity of the screw and hopper, which will increase its performance.

 Providing the device with a mechanical crusher allows grinding lumps of powdery reagents, elastic fibers and preventing reagents with larger particles from entering the ejection chamber, which will lead to an increase in the device's performance and the dispersion efficiency of the solution.

 The drawing shows the proposed device for the preparation of solutions.

 The device for preparing solutions consists of a housing 1, a hopper 2 and a screw 3. The housing of the turbine hydraulic motor 4 is screwed into the housing of the device 1 on the one hand, and the ejector diffuser 5 combined with the mixing chamber 6 is screwed on the other hand.

 The turbine hydraulic engine consists of a housing 4, in which two angular contact (rubber-metal) bearings 7, an adjusting ring 8, and turbine stator disks 9 are mounted. They are pulled together by a nipple 10 screwed into the housing 4, and together with the latter, they represent a monolithic system.

 On the shaft of the engine 11 is mounted the adjusting ring 12 and the disks of the rotor of the turbine 13, which are pulled together by a nut 14 into a monolithic system. A sleeve 15 is also installed on the motor shaft, which, together with the rubber lining of the nipple 16, acts as a radial bearing and an oil seal. On the other hand, a screw 3 is installed on the motor shaft, which is fixed by a nut 17, and knives 18, which are fixed by a nut 19. An ejector nozzle 20 is screwed into the end of the motor shaft 11. The disks of the stator 9 and rotor 13 having the same diameters of the flow part alternate in axial direction and form a multi-stage turbine of the hydraulic motor. The channels are formed by blades evenly spaced around the circumference of the flow part of the disks, mounted obliquely to the axial plane of the turbine. The blades of the disks of the stator and rotor have a streamlined shape and the opposite direction of inclination.

 In the housing of the device 1, a perforated disk 21 and an adjusting ring 22 are installed, which are fixed by the diffuser 5, and together with the knives 18 form a mechanical crusher.

 The ejector is formed by a diffuser 5, combined with the mixing chamber 6, and the nozzle 20, and its ejection chamber 23 is connected through a perforated disk 21 with the cavity of the shaft 11 and the hopper 2.

 The device operates as follows.

 The working fluid under pressure enters the turbine hydraulic engine, where part of the hydraulic fluid flow is converted into mechanical energy of rotation of the shaft 11. The liquid spent in the turbine is directed through the shaft cavity 11 into the nozzle 20 and is formed into a stream, which creates a vacuum in the ejection chamber 23, into which crushed solid particles or liquid (dispersed phase) enter.

 A liquid stream captures the dispersed phase and rushes into the mixing chamber 6 and the diffuser 5. At the outlet of the mixing chamber 6, a cavitation zone is formed, as a result of which the two phases are intensively mixed and dispersed and then further supplied through the diffuser 5 as intended.

 The rotational movement of the motor shaft 11 is transmitted to the screw 3 and the knives 18. During rotation, the screw 3 forcibly captures the inactive dispersed phase from the hopper 2 and feeds it into the ejection chamber 23. The preliminary dispersed phase is mechanically ground due to the rotational movement of the knives 18 and sifted through the perforated disk 21. The degree of grinding of the dispersed phase is regulated by replacing the perforated disk 21 with another, with a larger or smaller diameter of the through holes.

 The proposed device due to the possibility of forced capture from the hopper 2 and feeding a sedentary, with lumps or elastic fibers of the dispersed phase using the screw 3 into the ejection chamber 23, as well as preliminary grinding with a mechanical crusher and screening its larger particles increases the productivity and efficiency of dispersing the solution.

Sources of information
1. Copyright certificate of the USSR 538732, cl. B 01 F 5/04, B 01 D 11/02, published December 15, 76

 2. Copyright certificate of the USSR 373022, cl. 01 F 7/28, published March 12, 73 (prototype).

Claims (1)

 A device for preparing solutions containing a hopper, a housing, a hydraulic actuator in the form of a hydraulic turbine engine, the shaft of which has a cavity to allow the passage of fluid spent in the turbine of the engine, and a screw mounted on this shaft, characterized in that it is equipped with a hydraulic ejector, a camera the ejection of which is connected with the cavity of the shaft and the hopper, and a mechanical crusher consisting of knives mounted on the motor shaft, and a perforated disk fixed in the ejection chamber, and the ejector Call cone, aligned with the mixing chamber and a nozzle on the end of the motor shaft.