RU2268781C2 - Bolter - Google Patents

Abstract

FIELD: various fields of engineering; devices for cleanout of liquids from dispersed impurities.

SUBSTANCE: the invention is pertaining to the devices for cleanout of liquids from dispersed impurities and may be used in various fields of engineering, including, ore mining industry, at oil-well drilling, gas-well drilling, water-well drilling, and other mineral resources drilling. The offered bolter has: a drive wheel made in the whole with a drum and in the form of a rigidly set on it band with blades and with a possibility to transfer a torque to the drum without a transmission drive; an additional pressure-tight manifold with a locking-adjusting fittings and nozzles directed to the blades of the drive wheel. At that as a gaseous physical body is used a flowable working agent, for example, the air or steam with a capability to form an adjustable torque on the drive wheel, irrespective to the mode a washing of the drilling well and properties of the washing liquor, and also with a capability of cleanout of meshes of a filtering screen without deregulation of the rules on treatment of the washing liquor. The vibrator is placed on the base under the lower along the run of the washing liquor end of the drum with a capability to force in vibration motions of the filtering screen lower part. The technical result of the invention is a capability to conduct cleanout of meshes of the filtering screen in the process of the bolter operation without deregulation of the rules on treatment of the washing liquor, and also to add vibration motions to the filtering screen using a simplified and lightweight single-phase kinematic scheme with smaller power inputs, with the minimal involvement in the vibration process of other structural elements of the bolter, lightening of the design and simplification of a kinematic scheme of the bolter at a minimum maintenance.

EFFECT: the invention ensures cleanout of meshes of the filtering screen in the process of the bolter operation, use of a simplified and lightweight single-phase kinematic scheme, decreased weight of the bolster design, power inputs and involvement in the vibration process of its other structural elements, at a minimal maintenance.

3 cl, 2 dwg

Description

The invention relates to devices for cleaning liquids from dispersed impurities in various fields of technology, including the mining industry, when drilling wells for oil, gas, water and other minerals.

Known analogue [1], the closest to the present invention by purpose and combination of features, is a device for cleaning from dispersed particles of a washing solution while drilling wells. The device according to this analogue includes a bed, a drum in the form of a bottomless elongated frame cylinder with a spiral screw located on the inner forming surface and covered with a filter mesh on the outer forming surface, and the drum is mounted on supports horizontally with the possibility of rotation around its own longitudinal axis, spring-loaded devices of the system, bearing a filter mesh, a fluid working agent, a mortar trough with discharge windows, a distribution unit with a receiving pipe, with a gate and a guide tray, installed with the possibility of supplying the washing solution together or separately to the drum on the filter screen and directly into the mortar trough, the drive mechanism to the drum in the form of a blade wheel mounted with the possibility of formation and transmission of torque to the drum, pressure manifold with shut-off adjusting fittings and nozzles placed along the drum parallel to its generatrix line, with the possibility of formation and impact on the filter mesh high-speed dynamic th jet of a fluid working agent and cleaning its cells from clogging dispersed particles, including plastic sticky clay rocks.

The main disadvantages of the sieve for the closest analogue.

1. The inability to form an adjustable torque on the drive wheel: regardless of the mode of flushing the well and the properties of the flushing solution.

2. The inability to transmit torque from the drive wheel to the drum without transmission.

3. The inability to clean the cells of the filter mesh from clogging dispersed particles, including plastic sticky clay rocks without violating the rules for processing the washing solution.

4. The inability to communicate linear filtering to the filter grid.

An analogue is also known [2] - a device for separating dispersed particles from washing liquids. A device according to this analogue includes a bed, spring-loaded devices of a system that carries a filter screen, a mortar trough with discharge windows, a receiving and distribution unit with a receiving pipe, a guide tray and a gate installed with the possibility of supplying a washing solution together or separately to the filter screen and directly into the solution a trough, a vibrator installed with the possibility of formation and transmission of vertical linear oscillations to the filter mesh, a fluid working agent.

The main disadvantages of the analogue:

1. The inability to clean the cells of the filter mesh from clogging dispersed particles, including plastic sticky clay rocks without violating the rules for processing the washing solution.

2. The inability to communicate linear fluctuations to the filter grid only in its part in the downstream direction of the wash solution.

The technical effect achieved in the device according to the invention:

1. The possibility of forming an adjustable torque on the drive wheel, regardless of the mode of flushing the well and the properties of the flushing solution.

2. The ability to transmit torque from the drive wheel to the drum without transmission.

3. Possibilities of cleaning the mesh of the filter mesh from clogging dispersed particles, including plastic sticky clay rocks without violating the rules for processing the washing solution.

4. Possibilities of communicating to the filter grid of regulated linear oscillations only in the lower part of the washing solution in the direction of the flow of the washing solution.

The specified technical effect is achieved as follows:

1. The drive wheel is made integral with the drum in the form of a hoop with blades rigidly set on it.

2. An additional pressure manifold is installed with shut-off and control valves and nozzles directing the fluid working agent to the blades of the drive wheel.

3. A gaseous physical body, such as steam or air, is used as the fluid working agent.

4. The vibrator is placed on the bed under the lower end of the washing solution, the end of the drum.

The sieve of the invention is shown in FIG.

-образными круговыми канавками.It includes (see Fig. 1) a bed 1, a drum 5 in the form of a bottomless elongated frame cylinder with a spiral screw 6 located on the inner forming surface and covered with a filter mesh (not shown) along the outer forming surface, and the drum is located on the supports 4 horizontally , spring-loaded devices (not shown) of the system carrying the filter screen, mortar trough 2 with unloading windows 3, receiving and distributing unit 11 with receiving pipe 12, guide tray 14 and gate 13, drive mechanism to the drum in the form of a vane wheel 15, a pressure manifold 16 with shut-off and control valves and nozzles placed along the drum parallel to its generatrix line, a vibrator (see figure 2 - view A) 8, 9, 10, placed on the bed under the downstream flushing solution by the end of the drum and a cylinder-piston 8-10 made in the form of a vertical pneumatic pair with a valve mechanism 19 and shock absorbers 20, an additional pressure manifold 17 with shut-off and control valves and nozzles directing the fluid working agent to the blades of the drive wheels a, the drum supports, made in the form of two rows of rubberized rollers 18, mounted on axles in spring-loaded trunnions mounted on fixed racks in the frame, and the drum at the locations of the supports is equipped with two rigidly mounted hoops 7 s

-shaped circular grooves.

The sieve of the invention works as follows.

Its launch is performed at idle until the start of the supply of the washing solution from the well.

From the source in the rig along the pressure manifold, using a shut-off and control valve, a fluid working agent is fed through nozzles in a dynamic high-speed mode to the blades of the impeller and the drum is rotated at a speed of 5 ÷ 10 rpm.

On the other line of the pressure manifold, a fluid working agent is similarly supplied to the filter screen of the drum.

A fluid working agent is supplied to the vibrator and vertical-linear vibrations are transmitted to the downstream part of the rotating drum of the washing solution. If necessary, with the help of valve mechanisms regulate the amplitude and frequency of vertically linear oscillations of the filter mesh.

The washing liquid is supplied through the inlet pipe to the receiving and distributing unit, using a slide device and a tray, it is sent to a drum that rotates at the same time and linearly oscillates in its lower part onto a filter screen.

The washing solution purified from dispersed particles through a filtering mesh enters the sump and then through loading windows into the circulation system of the well. The mass of dispersed particles filtered on the grid under the action of vertically linear vibrations and the screw rotating together with the drum moves to the end of the drum downstream of the washing solution and is discharged into the sludge dump.

Dispersed particles stuck in the cells of the filter mesh, or adhering to it from the inside of the drum, are blown by a pressure dynamic jet of a fluid working agent from the nozzles into the drum and are removed together with the rest of the sludge.

Bibliography:

1. Copyright certificate US No. 1204273 A, 01/15/1986, 2 pp.

2. USSR Copyright Certificate No. 1242263, cl. B 07 B 1/40, 1986.

Claims (3)

1. A sieve, including a bed, a drum in the form of a bottomless elongated frame cylinder with a spiral screw located on the inner forming surface and covered with a filter mesh on the outer forming surface, and the drum is located on supports horizontally with the possibility of rotation around its own longitudinal axis, spring-loaded devices of the system, carrying filter mesh, fluid working agent, mortar trough with discharge windows, receiving and distributing unit with a receiving pipe, a gate and a guide m tray installed with the possibility of supplying the washing solution together or separately to the drum on the filter screen and directly into the mortar trough, the drive mechanism to the drum in the form of a blade wheel mounted with the possibility of formation and transmission of torque to the drum, pressure manifold with shut-off and control valves and nozzles placed along the drum parallel to its generatrix, with the possibility of formation and impact on the filter mesh of a fast dynamic jet of fluid work bringing the agent and cleaning its cells from clogging dispersed particles, including plastic sticky clay rocks, a vibrator installed with the possibility of forming and transmitting vertical-linear vibrations to the filter grid, characterized in that the drive wheel is integral with the drum and in the form of a hoop rigidly mounted on it with blades and the possibility of transmitting torque to the drum without transmission, an additional pressure manifold is installed with shut-off and control valves and nozzles aimed at the blades one wheel, and a gaseous physical body, such as steam or air, is used as a fluid working agent, with the possibility of forming an adjustable torque on the drive wheel, regardless of the well washing regime and the properties of the washing solution, as well as with the possibility of cleaning the mesh cells without violating the regulations for processing of the washing solution, the vibrator is placed on the bed under the downstream of the washing solution the end of the drum with the possibility of driving the lower of the filter screen. 2. The sieve according to claim 1, characterized in that the vibrator is made in the form of a vertical pneumatic cylinder-piston pair with a valve mechanism and shock absorbers with the ability for the piston to perform adjustable vertical-linear oscillations relative to the stationary cylinder by using the energy of a fluid working agent. 3. The sieve according to claim 1, characterized in that the drum supports are made in the form of two rows of rubberized rollers mounted on axles in spring-loaded axles mounted on fixed racks in the bed, and the drum at the locations of the supports is equipped with two rigidly mounted hoops with

-shaped circular grooves installed with the possibility of free rolling rollers in them without axial displacements of the drums.

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