Device for mixing or homogenization of the fluid and the fluid and the method of mixing or homogenization of the fluid and the fluid

 

(57) Abstract:

The invention relates to the process of the multiphase mixture, and more particularly to a mixing two or more fluid materials. The inventive liquid supplied to the vessel, forms a reservoir from which it is drawn through the Venturi. The supply pipe or pipes to transport other liquids and/or gases from separate sources or from the volume above the liquid reservoir into the Venturi for mixing with the liquid. The feed pipe may pass through the tank and be perforated to maintain the liquid level of the tank. With a Venturi tube connected to the pressure sensors for measuring the flow and the densitometer, which allows to determine the rate of mass transfer of the gas and liquid phases. The apparatus may be enclosed in the nest underwater installation. 2 C. and 23 C.p f-crystals, 6 ill.

This invention relates to a process for multiphase mixing and measuring system, and more particularly to a system whereby the process of mixing two or more fluid materials, which may be liquids, gases or vapours, and by which, if necessary, can be made in the measurement of these materials.

This izobreteniya this way the liquid flows from the reservoir through the holes in the Venturi, and the liquid or other flowable material which must be mixed with a liquid, is injected into the flow of fluid mixing in the Venturi. The process of mixing or homogenization, therefore, is that the fluid material, which may be gas or vapors or the second liquid, which extend through the holes in the Venturi flow of the first mentioned liquid, optionally with a liquid, you can mix more than one or flowable material, and in this case, the inlet pipe may be composed of two or more concentric tubes in which the flow of fluid material into the Venturi tube through the inner tube and the gap or gaps between it and each outer pipe.

Thus, the invention provides an apparatus that includes a chamber or receptacle, which may be filed with the fluid from the first source for the formation of the reservoir fluid, the chamber has outlet openings, tapering with the formation of the Venturi, which is joined with the free end of the input hose to the Venturi fluid material from the second source to mix with the liquid.

The invention can be represented as a variant of the apparatus for smeshevanie devices, mixing the input pipe and the upper part of the camera, this is the part above the reservoir formed by the liquid phase of the multiphase current thread, the upper part of the chamber consists of the second source and the tank is the first source. Keeping in homogenized multiphase flow one or more fluid additives may be also implemented by using a concentric inlet pipe. The flow can be in the hole by gravity, so the output from the camera is placed on its bottom. However, according to this invention the apparatus can be constructed so as to be positioned directly above the respective pump or booster.

The preferred option when the apparatus includes devices designed to maintain the liquid level in a vessel or chamber. According to the invention it is possible to make each input pipe that supplies the liquid into the Venturi tube, passed through a reservoir of liquid in the chamber and was perforated or had cracks. The amount of fluid flowing out of the reservoir fluid, respectively, increases with the rising of the liquid level in the greater degree, the more holes immersed in the liquid.

obedinena with means of measuring flow (migration). Equipment for measuring flow operates on the principle of measuring the pressure drop when transferring a fluid material through the Venturi may be built into the equipment; pressure sensors placed on the outlet of the Venturi. The inclusion in the system densitometer can allow you to easily determine the mass transfer rate homogenized multiphase fluid stream.

The apparatus of this invention can be used for homogenizing and/or measurement of the mixture of oil, water and gas, and may be implemented in a form suitable for use under water. Thus, the invention also provides a cartridge for measuring flow, which can hold the throttle device adapted for placement under water by installing in the slot of the drum associated with X-shaped stand.

It will be seen that this invention has many different use cases, in particular in the oil industry, where it can be used for input and mixing chemical additives, as well as in oil production on land and in the sea. As the apparatus for the homogenization, the apparatus of this invention can be used, in particular, for mixing or d is of such wells, can vary considerably between them from the point of view of the contents liquid and gas components. They may include conglomerates almost unmixed fluid source separated portions of the gas may also include more or less homogeneous areas. This heterogeneity of the recoverable material creates certain difficulties in the process of transportation, in particular for pumping equipment.

Below are examples of the implementation of the present invention, accompanied by diagrams and drawings, according to which Fig.1,2 and 3 are side views of the section of the first, second and third types of equipment used for mixing or homogenization, made in accordance with this invention; Fig.4 is a side view in partial section of the nest underwater installation with the cartridge that includes the apparatus shown in Fig.2; Fig.5 is a side view of an underwater installation, in which is mounted the socket; Fig.6 is a General view in reduced scale of an underwater installation.

The mixing apparatus shown in Fig.1, includes a vertical section of the cylindrical container 10, the upper part of the wall 11, which has a Central the inlet pipe 14, which connects with the interior of the container through the second opening in the upper wall 14, are displaced with respect to the axis of the container. In the lower end wall 16 of the container has a Central outlet through which the container is connected with a hollow drain hole fitting 20, whereby the inner portion of the container acts as a Venturi tube. The Central pipe 12 is positioned so that, passing through the outlet 17, and its lower end open, is exactly in the fitting 20.

The liquid supplied to the container via the inlet pipe 14 at a corresponding flow rate, forms a reservoir 21, which under the action of gravity flows through the outlet 17 and the drain hole fitting 20. The second liquid or gas flowing through the pipe 12 will be due to the Venturi to passivate along the pipe 12 and effectively mixed with the fluid flowing through the pipeline 14. The pipe 12 has a slit or perforated holes 22, at least in its lower part, so that the liquid from the tank 21 flows into the Venturi tube through the tube and through the outlet 17. Degree level control tank 21 depends on how many perforations 22 stenopelmatidae in Fig.1, designed for mixing fluid from the first external source with another liquid or gas from a second, different, external source. The equipment can be used in different ways for input of chemical additives and drip feed additives in the liquid.

The type of apparatus shown in Fig.2, is adapted for mixing the liquid and gaseous phases, taking place in one of the incoming current flow, and, thus, acts as a homogenizer. In the following description of the apparatus of Fig. 2 and 3 numerical notations already used to describe Fig.1, will be used again to describe similar parts.

The apparatus shown in Fig.2 differs from that shown in Fig.1, so that the source of the current stream to the Central pipe 12 is the upper part of the container's content. For this purpose, the Central pipe is not raised above the upper end wall 11 of the container that allows its connection with the second offset from the Central axis of the container hole 25. The second subcontainer 26 of cylindrical shape and of a smaller length and diameter than the main container, which passes through the inlet pipe 14, is mounted on the upper chasnala the container 10 through the inlet pipe 13, committed under the influence of gravity separates from the gaseous phase and forms a reservoir 21 in the lower part of the container. The gas phase occupies the upper portion of the container above the liquid surface of the tank. The liquid phase out of the tank 21 through the drain hole fitting 20 under the action of gravity, and the Venturi effect is that the gas from the upper part of the container through the opening 25, subcontainer 26 and the Central tube 12 enters the Venturi. The liquid phase is sequentially mixed with the liquid phase, resulting in the drain hole fitting 20 get a homogeneous or almost homogeneous current material. If the multiphase fluid stream flowing in the container, a homogeneous or almost completely homogeneous material, in this case, the mixture may be discharged through the drain hole fitting through the outlet 17, and the pipe 12.

A hollow fluid fraction of material leaving the container 10 depends on the size of the Venturi, and can be decoupled it from the total flow rate Qtthe level of liquid in the container and absolute pressure p.

Assuming that in the container are as some liquid and some gas, Ob calculated on the basis of the total equation

< / BR>
where ATthe cross-sectional area of the container,

ALthe cross-sectional area of the fluid in the Venturi tube,

ANDGthe cross-sectional area of the gas in the Venturi tube,

Lthe ratio of the total fluid loss,

Gthe ratio of the total gas loss,

PLthe density of the liquid,

PGthe density of the gas,

g share.

In steady state conditions, the average size of the hollow faction out of the container, will be equal to the average of the hollow fraction entering the container. To ensure the simultaneous presence of both liquid and gas in the container when the level of liquid is convenient to reduce pumping gas fraction and Vice versa, using for this purpose the perforations in the pipe 12. The perforated part of the pipe 22, thus, operates as an integrated regulator that allows you to vary the hollow faction. Selecting appropriate dimensions of the Venturi and orifice 25 in the part of the tube 22, it is possible to achieve mixing with any desired parameters.

In some cases, the use of the equipment shown in Fig.2, if you wish, you can apply for entry fluid additives homogenized in the CLASS="ptx2">

The apparatus shown in Fig.3, similar to the equipment shown in Fig.2, but differs in that it contains an additional pipe 30 mounted coaxially within the tube 12. The inner tube 30 reaches the lower end of the pipe 12 and is connected at its upper end with a source of the desired liquid or gaseous additives, which are sucked into the fitting Venturi together with the liquid phase from the reservoir 21 and the gaseous phase above him, therefore, to achieve effective mixing of these phases. This inner tube, as the tube 30 may be added to the apparatus represented in the other figures, in those cases where it is necessary to carry out the mixing of more than one fluid materials with fluid supplied through the inlet pipe 14.

In some cases, the use of varieties of apparatus shown in Fig.1,2 and 3, it is desirable to measure flow of fluid material passing through the apparatus, in this case, the instrument can be connected with located downstream of the rheometer (flow meter). However, since each type of equipment includes a Venturi tube, devices that can be selected for flow measurement, C is in the apparatus for mixing. As shown schematically only in Fig.2, although it may be used in the apparatus shown in Fig. 1 and 3, the fitting 20 is mounted axially located above and below the current pressure sensors or gauges 40 and 41, which is fixed an output signal representing the pressure of the current material. The upper sensor 40 is placed in the Venturi. The output from the gauge comes on technological equipment 44. Located above and downstream temperature sensors 45 and 46 are also connected to the fitting 20 in the respective axial positions associated with the position of the gauges 40 and 41. The output corresponding to the temperature sensors are served from the sensors 45 and 46 to the microprocessor 50. The output signals of the temperature sensors 45 and 46 are processed in the microprocessor 50, which transmits the output to the display and/or recording device 51 to compensate for changes in density that may occur as a result of temperature measurements.

The mixture flowing through the fitting 20 includes liquid and gas phase, and mass transfer rate of the individual phases can be calculated in the microprocessor device 50 when submitting him in the output of densito the market with the Y - or X-irradiation. Gomogenizirovannogo nature of fluid flow in the fitting 20 creates the possibility of obtaining an accurate result.

Although it was mentioned that the fluid stream moves through the apparatus depicted in Fig. 1,2 and 3, under the action of gravity, the flow can be accelerated or created using the booster 31 or pump, downstream, represented only schematically in Fig.3, but which can also be used with the apparatus shown in Fig.2 and 3, and mount it under the drain hole or tube Venturi fitting 20.

The present invention applies in particular, but not exclusively, in the oil industry. For example, crude oil, representing a mixture of gas, oil and water can be filtered through the apparatus shown in Fig. 2. For use in underwater installations and equipment may be enclosed in the cartridge 60, as shown in Fig.4, to be able to be installed in the open slot 61 counter located at the facility. The slot 61 may be mounted as shown in Fig.5 and 6, the auxiliary frame X-shaped stand 63 on the side opposite to the arrangement of the control module 62, in order to contribute to the balanced and of equal diameter 64,65 and 66, designed to strengthen the lower part of the slot 61 with the formation of a uniform internal profile. After the cartridge is inserted into the slot 61, spend the activation of the sealing devices using hydraulic pressure. The space between the upper and intermediate sealing devices forms a closed entrance chamber with crude oil, which is pumped through the pipe 69, which is a hole in the wall socket. From the input camera crude oil enters the container 10 of the mixer or homogenizer, through which it flows. The lower sealing device 66 forms the lower end of the exit chamber, in which mixed and measured the flow of crude oil goes through the lower end of the fitting 20 of the mixing apparatus and from which it is unloaded from the opposite side through the hole in the wall of the slot in the pipe 70.

Supply of electrical and hydraulic power to the cartridge 60 through the connecting device, including a hole in the base of the socket and connector plug 72 extending from the lower end of the cartridge that is inserted into the hole during installation of the cartridge. Above the upper sealing device 64 cartridge 60 of its diameter, than the lower part of the socket, and the release pin 75, through which it drops into the slot during installation, and can be brought back, if necessary, using the lift.

Actuators and hydraulic actuators are connected with the cartridge 60 by means of a connecting plug 72 and the electrical and hydraulic integrator 76 located beneath the lower sealing device 66. The cartridge may optionally include a cover 80, which may be located above the flow meter, as shown in the figure, or below it, connect to it come from the integrator 76, as well as to the flow meter, unless the cap is not mechanically controlled valve. The control and information signals are routed through the plug 72 in the integrator 76 between the cartridge and the control module 62 on the X-bracket and through the Central channel devices to the control panel.

The flow meter cartridge 60 and slot 61 is mounted below (under) vane valve X-shaped stand, with which it is connected by a rigid connection flange pipe, so that the crude oil flows continuously out of the barrel through the control valve to the cartridge and out to the transport pipeline through which tvline other ways, other than those listed in the description.

1. Device for mixing or homogenization of the fluid and the fluid containing the pipeline with input and output ends, the Venturi tube between the said ends and pipe the output end, with the tube passes into the pipe with a gap between its input end and the output end of the pipe in the direction of clockwise or counter-flow Venturi, characterized in that it contains a receptacle for the contents of at least the liquid inlet end of the pipe connected with the interior of the vessel through openings in the wall of the vessel and the tube passes from its output end through the hole in the vessel.

2. The device under item 1, characterized in that the tube has lots of holes located at a distance from each other along the length of the pipe inside the vessel.

3. The device under item 1 or 2, characterized in that it contains means for fluid supply and the fluid inside the vessel.

4. The device according to p. 3, characterized in that the tube has an input end connected with the interior of the vessel.

5. The device according to p. 4, characterized in that the tube is held inside the vessel and connected with the interior of the vessel through the camera, SOTI is connected with the interior of the vessel via the inlet pipe and the pipe passes out of the vessel to the outside and is connected with a device for supplying a fluid medium.

7. Device according to one of the preceding paragraphs, characterized in that it contains a second pipe connecting device for supplying the second fluid flow with the interior of the vessel.

8. The device according to p. 7, characterized in that the second pipe is located inside the first pipe.

9. The device under item 8, wherein the second pipe has an output end adjacent to the outlet end of the pipe.

10. Device according to one of the preceding paragraphs, characterized in that the output end of the pipe is connected to the input of the suction pump located downstream of the Venturi.

11. Device according to one of the preceding paragraphs, characterized in that it contains means for measuring the fluid flow through the Venturi.

12. The device according to p. 11, characterized in that the means for measuring the flow contains sensors for measuring pressure, located respectively at the entrance to the Venturi and the Venturi tube, means for processing the output signals of the sensors, display and/or registration tool, responsive to the output processing tools.

13. The device according to p. 12, characterized in that the means for measuring the flow contains datcyde temperature sensors to compensate for changes in density depending on the temperature.

14. The device under item 12 and/or 13, characterized in that the means for measuring the flow contains a densitometer, and the processor responds to the outputs of the pressure sensors and scanners to calculate the velocity of mass transfer of the gas and liquid phases in the fluid flow.

15. Device according to any one of the preceding paragraphs, characterized in that it is enclosed in the cartridge, taken back to the nest for underwater installation.

16. The device according to p. 15, characterized in that it contains means of seals located between the socket and the socket, and identifies the input chamber and the chamber discharge connected through the entrance with the vessel and with the pipeline.

17. The device according to p. 15, or 16, characterized in that it contains a means of locking the cartridge in the slot after insertion, and means for actuating the sealing means using hydraulic pressure.

18. The device according to p. 15, or 16, or 17, characterized in that it has an electric and/or hydraulic connection means, located between the Chuck and the underwater installation with the possibility of fixing the cartridge in the slot.

19. The method of mixing or homogenization of the fluid and a fluid medium, comprising polacoat together or homogenized, characterized in that exercise the passage of fluid and the fluid in the pipeline through a vessel having an outlet leading to the pipe, and the flow of the fluid in the pipe extending into the vessel from its output end, which is in the pipeline, the fluid and the fluid supplied from the same source or from those different sources.

20. The method according to p. 19, characterized in that it includes the regulation of fluid flow from the vessel to ensure that the liquid level in the vessel, and the regulation is performed by the discharge pipe of the fluid and the fluid in an appropriate amount depending on the level of the liquid.

21. The method according to one of paragraphs.19 to 20, characterized in that it comprises mixing with the liquid of the second flow of fluid and the first fluid flow by means of the supply of the second fluid flow from the source to the tube coming out of the vessel from the output end of the tube inside the pipe.

22. The method according to one of paragraphs.19 to 21, characterized in that it includes determining the change in pressure in the Venturi tube and the measurement of the fluid flow through the Venturi of the ow pressure.

Vanie a certain temperature changes for compensating measurements of fluid flow due to density variations, caused by temperature changes.

24. The method according to p. 22 or 23, characterized in that it includes the measurement of density in the Venturi tube and determine the rate of mass transfer of the gas and liquid phases of the obtained results.

25. The method according to one of paragraphs.19 to 24, characterized in that the applied low pressure to the pipeline downstream of the Venturi.

 

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