Method and system of drilling slime transfer

FIELD: transport.

SUBSTANCE: proposed method allows the transfer of drilling slim from first location into second location. Proposed system comprises first container 22 containing fluid, appliance to transfer drilling slime from first location outside the container into second location inside location that comprises first pipeline 24 running via inlet of the first container, and intermediate appliance 18 creating vacuum communicated with the latter and arranged upstream of said first container. Said appliance comprises pressure and vacuum device is suitable for selective switching between pressure conditions and vacuum creation, and intermediate accumulation vessel. There are also auxiliary appliance suitable for facilitation of drilling slime transfer from first location into second location by at least partial removal of fluid from the first container and capable of operating simultaneously with transfer appliance, and second container 14 arranged upstream of the first container.

EFFECT: higher reliability of transfer.

24 cl, 7 dwg

 

The invention relates to a system and method of transportation of material and, more specifically, but without limitation, relates to a system and method of transportation which is not low or relatively sticky paste-like materials formed when carrying out exploration and production of hydrocarbons.

When the exploration and production of hydrocarbons, it is often necessary to transport large quantities of material from, for example, the drilling rig to a transport vessel for transporting material to land for further processing/disposal. Materials used/generated during drilling operations, such as drill cuttings, special paste, drilling mud are often highly viscous substances, which because of their cohesive properties are difficult to transport. One way of transportation of such materials is that they are loaded in the container or hopper and subsequent transport of the container or hopper on the ship; however, the movement of a container or skip on the rig, as required in this method, creates a hazard to personnel working on the rig.

For more secure transport of drill cuttings from the drilling rig to the ship known a technique in which the cuttings are first transported to a number of large storage tanks. When nakopitel the e tank is full, they are connected through a pipeline to transport containers on Board the transport vessel and transmit the material down using compressed air or similar working fluid to facilitate the movement of material through the pipeline, however, such systems may be blocked because of the difficulty in obtaining a sufficiently large pressure difference between the drilling rig and vessel. European patent 1187783 reveals a system of pneumatic transport of heavy paste-like materials, it is usually difficult to be transported, such as polluting waste oil drilling when drilling oil wells. The ability of high-viscosity materials to stick together instead of flow in combination with sagging long pipeline with the creation of individual sections of the pipeline, where the flow of high-viscosity materials must counteract the force of gravity increases the likelihood of blockage of the pipe.

The aim of the present invention is to provide a safe and efficient method and system for transporting drill cuttings.

According to the invention established method for transporting drill cuttings from the first location to the second location, containing the following steps:

providing a first container containing the fluid;

transportation of drill cuttings from the first location being Sarug the first container, the second location inside the first container, by means of transport containing the first pipeline passing through the inlet portion of the first container, and an intermediate, creating a vacuum tool, United with him, located upstream relative to the first container containing the pressure and vacuum means adapted to selectively switch between discharge and create a vacuum and having an intermediate cumulative capacity;

simultaneous with the specified transport drill cuttings, at least partial removal of the fluid from the first container to facilitate the movement of drill cuttings into the first container;

providing a second container located upstream relative to the first container;

providing a first injection means for injection of drill cuttings into the second container under pressure so that the drill cuttings are placed in the second container to move in the first container.

The method may further include the step of at least partial removal of air from the first container through a second pipeline to essentially create a vacuum inside the first container.

Fluid can at least partially removed from the first containers is RA, while essentially preventing the removal of drill cuttings from it.

The second container can provide temporary storage of the transported cuttings.

Pressure can be applied to the second container and the drilling mud contained therein, upon reaching the drill cuttings in the second container to the specified level.

The second container may then be emptied by removing at least part of the drill cuttings contained in the second container through the exhaust pipe. Removing at least part of drill cuttings on the exhaust pipe can be made by means of pressure applied to the second container. The exhaust manifold may be in hydraulic communication with the first pipe through an intermediary, creating a vacuum means to transport cuttings from the second container into the first container.

The first container can be positioned on the vehicle, and the second container can be positioned near the funds supply of drill cuttings from the primary source of drill cuttings at the drill rig.

Staging creates a vacuum means can be positioned near the second container and downstream relative to the second container.

According to the invention a system of transportation of drill cuttings containing p is pout container, containing the fluid, means for transporting drill cuttings from the first location outside of the container, the second location inside of the container containing the first pipeline passing through the inlet portion of the first container, and an intermediate, creating a vacuum tool, United with him, located upstream relative to the first container containing the pressure and vacuum means adapted to selectively switch between discharge and create a vacuum and having an intermediate accumulation tank, and auxiliary means adapted to facilitate the transport of drill cuttings from the first location to the second location by at least partial removal of fluid environment from the first container and capable of acting simultaneously with the means of transportation, a second container located upstream relative to the first container, and the first discharge means for discharge of drilling mud under pressure in the second container so that the drill cuttings are placed in the second container to move in the first container.

Auxiliary means may include a second pipeline passing through the discharge portion of the first container. Supporting the tool may further comprise creating a vacuum means, United with him.

The inlet and outlet portions may be located at a distance from each other along the diameter of the first container to prevent drill cuttings coming from the inlet portion, the outlet portion.

The system can include a filter located at the outlet side for additional protection against ingress of drilling mud into the exhaust part and creates a vacuum tool.

The inlet and outlet portions may be located at the upper end of the first container.

Fluid may be air.

Cuttings can be a side product in the exploration and production of hydrocarbons in the form of sludge.

The second container may contain drilling mud under pressure and to be located upstream from the intermediate, creating a vacuum means.

The second container can be connected with the first container for transporting drill cuttings between them. The connection between the first and second containers can pass through at least part of the intermediate, creating a vacuum means.

The first and second containers can be essentially cylindrical silo containers.

At least one of the first and second containers may have a number of spaced around the circumference of the discharge channels for drill cuttings having a cross sectional profile in the form of m is Gogolya, adapted to essentially prevent sealing of drill cuttings inside the container.

The system may have a separating device located near the discharge channels to essentially prevent the deposition of large pieces of drill cuttings within the discharge channel.

An advantage of embodiments of the invention is that they allow you to pump drilling mud by means of the intermediate or transfer pump and/or creating a vacuum means the first pipeline until it is ejected into the container from the inlet side of the first pipeline. The movement of drill cuttings on the first pipe and into the container facilitates and/or helps a substantial vacuum is created at the same time, the diameter of the container through a second pipeline and creating a vacuum means.

The above system allows you to draw with the help of vacuum in the intermediate or transfer pump and/or creating a vacuum tool, a small amount of drill cuttings, limited by the maximum cavity intermediate or transfer pump and/or creating a vacuum means from the second container into the intermediate storage capacity of the intermediate or transfer pump and/or creating a vacuum means. Under the effect of increased D. the effect to the contents of the second container usually helps this process by creating a positive pressure difference between the inside of the second container and the outside of the second container. When the intermediate storage capacity is full, intermediate or transfer pump and/or creating a vacuum means are switched, either manually or automatically, in the mode of discharge for pumping the contents of the intermediate storage capacity in the first container this process helps the vacuum generated in the first container through a second pipeline and creating a vacuum tool.

Variant implementation of the present invention will be further described with reference to the accompanying drawings, which depict the following:

Figure 1 depicts a diagram showing the course of the drilling mud through the system according to the present invention;

Figa - schematic front view of the container used in the system of figure 1;

FIGU is a top view of the container on figa in the direction indicated by the arrows In;

Figs - side view with the local longitudinal section of the container on figa;

Fig.2D is a view in transverse section of the container on figs along the line C-C showing the location of the valves in the lower part of the container;

Fige - side view with the local longitudinal section of the container capacity figs in the direction indicated by arrow D;

Fig.2F is a view in transverse section of the container on file along the line e-E, showing the location of hexagonal discharge channels and cone. used in the preferred embodiment, system.

Figure 1 shows a system 10 transports cuttings. The system 10 includes a first container 22 and the second container 14, the first discharge means 12, United with the second through inlet pipe 16. The container 14 is connected to the intermediate, creating a vacuum means 18 through the exhaust manifold 20. Creating a vacuum means 18 is also connected to the first container through the first pipe 24. The second pipe 26 is connected with the supporting means 28, adapted to facilitate transport of drill cuttings and representing, creating a vacuum means, and communicated with the inner cavity of the container 22.

Means 12, 18, 28 can selectively switch between a vacuum, in which the drilling mud is fed into the integrated intermediate accumulation tank 30, and the mode of discharge at which the drill cuttings are removed from the tank 30 under the action of pressure. The pressure difference required for the creation mode vacuum mode discharge is generated by an air compressor (not shown)attached to or built into the tool 12, 18, 28. An example of the preferred tools that can provide such characteristics of the discharge and the creation of a vacuum system is SUPAVAC™, which is sold around the world for customers in the oil and gas industries, the AI company ITS Drilling Services Limited UK specialists in the art will understand that other standard, creating a vacuum means may also be used, although these other standard tools may not work as fast and effectively.

The containers 14 and 22 represent a large cylindrical tank, which is capable of storing a relatively large amount of drill cuttings. Each container 14, 22 capable of storing approximately 15 m3up to 20 m3cuttings, although it should be noted that can be used to the smaller or larger without affecting the operation of the system 10 as a whole.

The container 14 has an outer vertical pipe 32 passing from the lower part to the upper part of the container 14, where it ends with the hole 34 so that the inner cavity of the pipe 32 is in communication with the internal cavity of the container 14. The lower part of the external vertical pipe 32 connected to the discharge means 12 through inlet pipe 16. Although the pipe 32 is located outside the system 10, it should be considered that it may, alternatively, be located within the system 10.

The lower portion of the container 14 may be flat or conical discharge channel connected to the exhaust valves, however, in the present and preferred embodiment of the invention (as best seen in figs, 2ND is 2F) around the circumference of the container 14 placed multiple discharge channels 36 with hexagonal cross-sectional profile, having a cell location. In the center of the channel 36 also has a separating device in the form of a cone 40 with hexagonal cross-sectional profile, the purpose of which will be described later. Fulfils the requirements of the nozzle 36 honeycomb shaped cross-sectional profile as described in the application PCT WO 00/55073, the contents of which are incorporated herein by reference.

At the lower end of each channel 36 posted by outlet valve 38 connected to the exhaust pipe 42, which converge together at the end of the exhaust pipe 20.

The main constituent elements of the container 22 is essentially the same as the container 14, and so forth described will not. In the following description the same reference positions are used to denote similar elements of the containers with the addition of the index.

In the arrangement shown in figure 1, the exhaust pipe 42 of the container 22, in contrast to container 14, is not connected to the exhaust pipe. However, the container 22 has an additional exterior vertical pipe 44, located opposite the outer vertical inlet pipe 32A. On the upper end of the pipe 44 has an inlet opening 46 of the second pipeline, which is the final part of the first container 22, the purpose of which will be described later. Additionally the th external vertical pipe 44 passes in a downward direction from the inlet 46 of the second pipeline and is connected with the second pipe 26, which is held to the tool 28.

It should be noted that the length of the pipeline 16, 20, 24, 26 shown in figure 1 are not real and have been modified for the purposes of clarity of understanding. In fact, the first pipe 24 should have a length sufficient for transporting drill cuttings from creating a vacuum tool Assembly 18 located near the container 14 located on the drilling rig (not shown), to a container located on a cargo ship (not shown), and this length is likely to vary depending on the specific location and conditions of use, typically from 10 m to 200 m

In the following description for drill cuttings through the system 10 shown by arrows 48 in figure 1, and the negative pressure suction (or vacuum pressure)produced by 12, 18, 28, shown as white arrows 50.

In the process, the discharge means 12 is enabled in the mode of creating vacuum. As a result, in an intermediate tank 30 creates a vacuum that sucks drill cuttings 48 into the container 30. It should be noted that drill cuttings 48 to the input of system 10 comes from equipment for primary processing of drill cuttings, such as vibrating sieve/centrifuge and other, typically used during the drilling operation. The vacuum in the intermediate tank 30 is supported up until InterMedia is the exact capacity of 30 will not be filled, the drill cuttings 48 what happens when vessel 30 contains about 400 l of drill cuttings 48. Being filled, the intermediate tank 30 can no longer tighten the drill cuttings 48 and must now be emptied.

For emptying the vessel 30, the first discharge means 12 switches to discharge. Mode discharge compressed air is pumped into the tank 30 by a compressor (not shown). The increased pressure in the vessel 30 displaces drill cuttings 48 in the tank 30 into the outlet pipe 16. Drill cuttings 48, due to the actions on the pressure of the compressed air in the tank 30 is moving upward through a vertical pipe 32 until then, until it reaches the inlet 34, and in this place cuttings 48 is included in the container 14. Gravity causes the drill cuttings 48 to fall towards the lower part of the container, thereby filling the container 14 from the bottom and upwards.

After the first injection means 12 has replaced the contents of the tank 30 into the container 14, it switches back to the mode vacuum (automatically or manually by the operator), to re-fill the vessel 30 drill cuttings 48 of the vibration sieve/centrifuges and other equipment that is placed on the drilling platform (not shown). When the next batch of drilling mud fills the first discharge means 12, eastertime is moved to the container 14 in the same way, as described previously. This cyclic filling and emptying 30 repeats the first injection means 12 to fill the container 14 to the desired level set by the user. Weight and, thereby, the volume of drill cuttings within the container 14 can be calculated by the user by subtracting the known weight of the empty container 14 from the full weight of the container, in the process, taking into account the density of the drilling mud (based on volume).

It should be noted that the means 12, 18, 28 have very few moving parts, such as impellers, etc. as they can easily be clogged high viscosity of the drilling mud passing through the units. Instead, the means 12, 18, 28, and mainly consist of chambers and valves (not shown), which, in combination with a source of compressed air, can be combined in different ways to get the desired effect upon the discharge or a vacuum.

Although figure 1 shows one container 14, the drilling rig may have a number of containers 14 to increase the capabilities of the rig for storage of drill cuttings 48 to its unloading. The number of containers on a rig typically would be in the range from 1 to 8, although it could be placed and more, if it allows the design of the rig. When has the Xia several containers 14, the inlet pipe 16, while filling connected to container 14 is detached from it and then connected to the hollow container 14.

When you want to transport the contents of the container 14, for example, the marine vessel (not shown), one end of the exhaust pipe 20 is connected to the exhaust pipe 42 emptied container 14. The other end of the exhaust pipe 20 is connected to the inlet nozzle creates a vacuum means 18. Then freely from cuttings space in the upper part of the inside of the container 14 increases the pressure (exhaust valves 38 are closed) or using an additional pressure source, such as a pneumatic pump or air compressor, or using the first discharge means 12, operating in the mode of discharge. The increased pressure in this area leads to the fact that the contents of the container 14 is displaced towards the bottom. Then open the outlet valve 39 on the lower part of the container 14, and then filled the tank 30 through the creation of vacuum means 18 just as was previously described. Vacuum 50 created in the exhaust manifold 20 which creates a vacuum means 18 (in combination with the pressure region of high pressure on drill cuttings 48 in the container 14), tighten drill cuttings 48 to which the container 14. When the container 30 is filled with drill cuttings 48, the tool 18 is turned off in preparation for pumping drill cuttings 48 in the first container 22 that is located, for example, on a cargo ship. On a cargo ship can be a number of such containers 22, for example from 1 to 20 tanks to maximize the cargo capacity of the vessel for transportation of drill cuttings.

When the tool 18 is switched to discharge, it begins to pump drill cuttings 48 on the first pipe 24 through the injection of compressed air into the tank 30. During pumping drill cuttings 48 on the first pipe 24 auxiliary means 28 operates in a mode of vacuum to create a vacuum in the second pipe 26. The vacuum created in the pipe 26, communicates with the internal cavity of the container 22 through the open inlet 46 of the pipeline 26. The pumping action provided by the second means 18 in combination with the vacuum created in the container 22, creates a large pressure difference between the ends of drill cuttings 48, moving the first pipe 24. The magnitude of this pressure difference is substantially greater than that obtained when only one of the following: discharge or vacuum, and is ideally suited for continuous viscous drilling mud, for example drilling mud is (which tends to stick together and clogging of piping) through the system 10. This is true even if the distance required to transport drill cuttings 48 (pipeline 24) from the drilling platform to the cargo ship, is relatively large.

When drill cuttings 48 reaches the inner inlet 34A, he follows in the container 22 and falls under the action of gravity towards the lower part. It should be noted that the pressure difference between the inlet 34A of the container 14 and the inlet hole 46 has an amount sufficient for the entrainment of cuttings 48 through the gap between the holes in the pipe 26. From these considerations, in order to prevent drill cuttings 48 in the pipe 26, while the volume of drill cuttings 48 in the container 22 a certain level, the operation of transportation should be switched to another container (not shown), as if the container 22 is full, drill cuttings 48 most likely would have entered into the pipe 26, which is undesirable. When each container 22 on the vessel is filled to the desired level, the pipe 24 is detached and the ship can move to a located on the shore of the complex for processing/disposal.

The separation device 40, 40A in the containers 14 and 22, respectively, is used for distribution of drill cuttings 48, falling from the inlet portions of the containers in the form of holes 34, 34A is between discharge channels 36, 36A. Because of the relatively small cross-section number of channels 36, 36A (in comparison with the design, when the bottom of the containers 14, 22 there is only one channel) is formed of several smaller individual sites that cuttings above, may put pressure on which the seal cuttings, located on the bottom of the containers 14,22 becomes less likely.

When the container 22 must be drained, free from drill cuttings space in the upper part of the container 22 may be increased pressure (exhaust valves 38A are closed) or using an additional pressure source, such as a pneumatic pump (not shown), or by using an auxiliary tool 28 mode discharge (and/or, if possible, creating vacuum means 18, as will be described later). The increased pressure in this area leads to the fact that the contents of the container 22 one's pressing away towards its lower part in the same way as described earlier for the container 14. Then open the exhaust valves 38A at the bottom of the container 22 and its contents are removed or only due to the increased pressure in the container 22, or by joining her for more, creating a vacuum means (not shown).

In the above embodiments, the implementation of the image is the shadow can be performed modifications, and improvements, without leaving the scope of invention.

For example, although the option of the implementation of the system 10, described above, is used to transport the drill cuttings, the system 10 can be used for the transportation of any drill cuttings, which flows through the pipeline, and is particularly advantageous for transporting drill cuttings that would otherwise have a tendency to clogging of pipelines.

Means 12, 18 can be replaced by any other, creating a vacuum means, in particular such that are able to operate as a vacuum tool, and as a pressure tool, not searays while the drill cuttings passing through them. The supporting means 28 may be replaced by a tool capable of generating a sufficiently large vacuum.

In addition, creating a vacuum means 18 can be located on the rig and on a cargo ship, in this case, the exhaust manifold 20 is accordingly extended and the pipe 24 is accordingly shortened.

1. Method for transporting drill cuttings from the first location to the second location, containing the following steps:
providing a first container containing the fluid;
transportation of drill cuttings from the first location outside of the first container, the second location is the inside the first container, by means of transport containing the first pipeline passing through the inlet portion of the first container, and an intermediate, creating a vacuum tool, United with him, located upstream relative to the first container containing the pressure and vacuum means adapted to selectively switch between discharge and create a vacuum and having an intermediate cumulative capacity;
simultaneous with the specified transport drill cuttings, at least partial removal of the fluid from the first container to facilitate the movement of drill cuttings into the first container;
providing a second container located upstream relative to the first container;
providing a first injection means for injection of drill cuttings into the second container under pressure so that the drill cuttings are placed in the second container before shipping it in the first container.

2. The method according to claim 1, further comprising the step of at least partial removal of air from the container through a second pipeline to essentially create a vacuum inside the first container.

3. The method according to claim 1, in which the fluid medium at least partially removed from the first container, if e is ω essentially preventing the removal of drill cuttings from it.

4. The method according to claim 1, wherein the second container provides a temporary storage of the transported cuttings.

5. The method according to claim 1, wherein the pressure exerting to the second container and the drilling mud contained therein upon reaching the drill cuttings in the second container to the specified level.

6. The method according to claim 1, in which the second container is then emptied by removing at least part of the drill cuttings contained in the second container, the exhaust pipeline.

7. The method according to claim 6, in which the destruction of at least part of the drill cuttings in the exhaust pipeline carried out by means of pressure applied to the second container.

8. The method according to 6, in which the exhaust manifold is in hydraulic communication with the first pipe through an intermediary, creating a vacuum means to transport cuttings from the second container into the first container.

9. The method according to claim 1, wherein the first container is placed on the vehicle, and a second container have near the funds supply of drill cuttings from the primary source of drill cuttings at the drill rig.

10. The method according to claim 8 or 9, in which the intermediate creating a vacuum tool feature near the second container downstream relative to the second container.

11. System transport the programme cuttings, containing the first container containing the fluid, means for transporting drill cuttings from the first location outside of the container, the second location inside of the container containing the first pipeline passing through the inlet portion of the first container, and an intermediate, creating a vacuum tool, United with him, located upstream relative to the first container containing the pressure and vacuum means adapted to selectively switch between discharge and create a vacuum and having an intermediate accumulation tank, and auxiliary means adapted to facilitate the transport of drill cuttings from the first location to the second location by at least partial removal of fluid from the first container and capable of acting simultaneously with the means of transportation, a second container located upstream relative to the first container, and the first discharge means for discharge of drilling mud under pressure in the second container so that the drill cuttings are placed in the second container to move in the first container.

12. The system according to claim 11, in which the supporting means includes a second pipeline, passing through the issue the SKN part of the first container.

13. System according to clause 12, in which the supporting means further comprises creating a vacuum means connected with him.

14. System 11 in which the inlet and outlet parts are located at a distance from each other along the diameter of the first container to prevent drill cuttings coming from the inlet portion, the outlet portion.

15. System 14, in which the outlet of the filter for additional protection against ingress of drilling mud into the exhaust part and creates a vacuum tool.

16. System 14 or 15, in which the inlet and outlet parts are located on the upper end of the first container.

17. The system according to claim 11, in which the fluid medium is air.

18. The system according to claim 11, in which the drilling mud is a by-product in the exploration and extraction of hydrocarbons in the form of sludge.

19. The system according to claim 11, in which the second container contains drilling mud under pressure and is located upstream relative to the intermediate, creating a vacuum means.

20. The system according to claim 11, in which the second container is connected to the first container for transporting drill cuttings between them.

21. The system according to claim 11, in which the connection between the first and second containers passes through at least part of the intermediate, creating a vacuum means.

22. The system according to claim 11, in which the first and second containers are essentially cylindrical silo containers.

23. The system according to claim 11, in which at least one of the first and second containers has a number of spaced around the circumference of the discharge channels for drill cuttings having a cross sectional profile in the form of a polygon, adapted to essentially prevent sealing of drill cuttings inside the container.

24. The system according to item 22, which has a separating device located near the discharge channels to essentially prevent the deposition of large pieces of drill cuttings within the discharge channel.



 

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FIELD: material handling facilities; pneumatic transportation.

SUBSTANCE: according to invention, tightness of pneumatic transportation plant is checked before starting and periodically in process of operation by creating vacuum gauge pressure of at least 0.08 MPa in pipeline and air line by vacuum pump, and residual pressure not higher than 0.02 MPa in unloader with subsequent revealing degree of air suction after closing of evacuation line. Reduction of vacuum gauge pressure in 10 min in pipeline should not exceed 0.005 MPa and in air line, not exceed 0.02 Mpa and rise of residual pressure in unloader should not exceed 0.0025 MPa in 5 min.

EFFECT: provision of reliable tightness of system and drying the system before starting and in process of operation.

3 cl, 1 tbl, 4 dwg

FIELD: mechanical engineering; pneumatic transport.

SUBSTANCE: invention relates to devices for storing and transporting and it can be used at designing of transportation system using gas pressure. Proposed pneumatic conveyor has frame, compressor, separator, unloading device, suction pipeline, intake device, compressor main line, fixed part of delivery main line, movable part of delivery main line with matting device, rotary valve, jack to lift movable part of delivery main line and turning device. According to invention, vanes of rotary valve get into delivery main line. Fixed part of delivery main line before rotary valve has head to direct air from compressor to vanes of rotary valve. Rotary valve body is made for vertical displacement relative to fixed part of delivery main line and is connected with fixed of main line by means of movable members, and with separator, by means of bushing mating with inner surface of separator bushing through seal.

EFFECT: reduced resistance in delivery main line, increased efficiency of device, provision of adjustment of position of rotor valve vanes with resulting optimization of efficiency.

5 cl, 7 dwg

FIELD: mechanics.

SUBSTANCE: pressure-equalising valve is arranged in a bin-accumulator. Note here that the proposed device incorporates additionally an intermediate bin with flaps and screen partitions to separate it into three compartments arranged one above the other, a loading bin communicating with the intermediate bin central compartment via a pneumatic line, a conveyor arranged between the intermediate bin lower compartment and feeder-accumulator, a down level pickup with its output connected to the conveyor motor, a unit of filters connected via vacuum line with the loading fan, and, further on, with the intermediate bin upper section. Note that the control unit inputs are connected to the computer and weight shaping circuit component outputs, while its outputs are connected to the drives of the switching flap and unloading fan respectively.

EFFECT: higher efficiency.

1 dwg

FIELD: technological processes.

SUBSTANCE: invention is related to pneumatic unloading of loose material, in particular, hardly loose oxidant, for its further pneumatic transport, may be used in different industries. Method includes supply of compressed air, preparation of aeromixture, its transport with suction vacuum pump, settling in unloader and capture of particles with wet filter. For method realisation inclined drum is used for prearation and unloading of aeromixture. Aeromixture is formed in it by supply of compressed air with pressure of up to 0.07 MPa and with continuous motion of oxidant together with cylindrical elements with diameter and height of 30-40 mm from elastic polymer materials. At that oscillatory motion of drum is created with amplitude of up to 180° at the same angle of travel from vertical axis. For aeromixture removal from drum in the beginning of drum oscillatory motion, unloading hatch gate is remotely opened, aeromixture is transported to material line along flexible sleeve connected to unloading hatch. Mass ratio of oxidant and cylindrical elements prior to unloading beginning is taken as accordingly 1:0.15-0.3.

EFFECT: provides more complete unloading of oxidant from reservoir for its further pneumatic transport.

2 dwg

FIELD: transport.

SUBSTANCE: proposed method allows the transfer of drilling slim from first location into second location. Proposed system comprises first container 22 containing fluid, appliance to transfer drilling slime from first location outside the container into second location inside location that comprises first pipeline 24 running via inlet of the first container, and intermediate appliance 18 creating vacuum communicated with the latter and arranged upstream of said first container. Said appliance comprises pressure and vacuum device is suitable for selective switching between pressure conditions and vacuum creation, and intermediate accumulation vessel. There are also auxiliary appliance suitable for facilitation of drilling slime transfer from first location into second location by at least partial removal of fluid from the first container and capable of operating simultaneously with transfer appliance, and second container 14 arranged upstream of the first container.

EFFECT: higher reliability of transfer.

24 cl, 7 dwg

FIELD: transport.

SUBSTANCE: this method is realised in material conveyance system, for example, that for conveyance of wastes including at least one wastes loading point 61 and transfer pipe (100) to be coupled with said loading point (61). Proposed device comprises separator (20) to separate conveyed material from carrier air and means (3) to develop pressure difference in pipe (100) during, at least, material conveyance. At least one portion of said pipe (100) can be used as a portion of the circuit. Conveyance air is forced by pump (3) during material conveyance. Pump suction side is connected with at least one separator (20) and, further, with outlet side of said pipe (100). Thus, at least the portion of conveyance air at pipe pressure side is forced into said circuit via pipe inlet (100). Conveyance air is circulated ay pipe section upstream of separator (20).

EFFECT: higher efficiency.

30 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the powder material feeding device (1) intended for powder material feeding into liquid, with consists of an inlet opening (2), an outlet opening (3), passage (4) for feeding of the powder material from the inlet opening (2) to the outlet opening (3), first valve (20), and also a gaseous medium feeding device (30) with an outlet (34) for gaseous medium feeding into the passage (4) for powder material, an outlet opening (34) is located in the passage (4) for powder material feeding downstream the first valve (20). The invention also relates to the method of powder material feeding into liquid comprising the following stages: (a) creation of rarefaction or negative pressure in liquid, (b) powder material feeding into liquid through pass (4) for powder material feeding, (c) first valve assembly (20) in the passage (4) for powder material feeding for the purpose of closing and opening of the passage (4) for powder material feeding, and also (d) gaseous medium feeding (50) by pressure into the passage (4) for powder material feeding downstream the first valve (20), at least, partially during closing and/or opening of the first valve (20).

EFFECT: inventions provide increase of service life of the device.

16 cl, 8 dwg

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