RU170136U1 - PIPE ADDITION DEVICE FOR PIPELINE - Google Patents

Abstract

A device for introducing additives into the pipeline is proposed. The device comprises a container with an additive, a reservoir with a separator piston, a tube for supplying an additive from a container with an additive to a separator piston, a pipe for supplying oil / oil from a pipeline to a reservoir with a separator piston, a tube for supplying an additive from a piston reservoir a separator in the pipeline, a pipe for oil / oil product removal, connected to the reservoir with a separator piston, which acts as a drainage. The container with the additive is located above the tank to ensure landing in the tank with a piston-separator by gravity (under the influence of gravity). In addition, the device is equipped with shutoff valves, namely, all tubes are equipped with gate valves, a check valve and a throttle valve are installed on the tube for supplying additives from the reservoir with the piston-separator, and there is a throttle valve between the two tubes connected to it. A flow meter is installed on the tube for supplying the additive from the reservoir with the piston separator into the pipeline. The device relates to the pipeline transport of oil and oil products and can be used in the system of transport of oil and oil products, oil industry. The main advantages of the proposed technical solution is the absence of additional elements in the pipeline that are not designed for high working pressures of oil pipelines and oil pipelines, the failure of which can lead to damage to the pipeline, which allows the introduction of additives into the cavity of the pipeline without the use of electric pumps and makes it possible to quickly control the flow rate additives due to the presence of throttles in the device. 1 ill.

Description

This device relates to the pipeline transport of oil and oil products.

A known installation scheme for the preparation of a depressant additive for its introduction into the main oil pipeline, which includes two mixer tanks with devices for lifting barrels on the roofs and emptying them, sectional heaters, pump units, a container for storing concentrate, metering pumps, a spray device . The process of preparing the solution begins with mixing in the mixing tanks, where oil enters through nozzles installed at the bottom of the tanks. The tanks operate alternately: in one, a solution is prepared, in the other, it is dosed and introduced into the oil stream through a spray device. If the active part of the additive (copolymer) is not a paste, but granules, then the installation will include apparatuses with frame mixing devices and thermo shirts, pumping units, heated containers with solvent, a warehouse for storing the copolymer, metering pumps, and a spray device. The solution is prepared in a mixer heated to the required temperature using a thermo shirt. The technology for introducing a finished additive is carried out using a metering pump and nozzles, through which the additive enters the pipeline [S. Vainshtok. Oil pipeline transport: Ref. ed. In 2 volumes, t. 1 - M .: Nedra, 2002, 266 p.].

A known installation for introducing additives into an oil pipeline having a typical structure: a solvent supply unit, an additive-solvent mixing unit, a pump unit and a heating unit. The pump unit includes metering pumps for pumping the dissolved additive from the mixing tanks into the oil pipeline [patent RU 125882 U1, publ. 03/20/2013].

Closest to the claimed technical solution is the installation for the introduction of anti-turbulent additives in the pipeline, which includes at least two metering pumps of different capacities [patent RU 89883 U1, publ. 12/20/2009]. Installation for introducing an anti-turbulent additive into the pipeline, containing an insulated container, storage tanks and equipment for supplying the reagent, connected by pipelines with shut-off valves, including at least two metering pumps installed in parallel, signaling, control, measuring and control equipment, characterized in that dosing pumps of different capacities are installed, at least one supply tank connected with the storage tank and with the suction is placed in the container the connecting pipe of each metering pump and made with the possibility of creating excessive pressure in it by means of a compressor.

Thus, various schemes are known for introducing an additive into a pumped product into a pipeline, however, most of them have the following property - the reagent is introduced using an electric metering pump and an injector. The disadvantages of the known devices are high energy consumption, high metal consumption, as well as the technological complexity of the design of the metering pump device and the difficulty of keeping it in working condition, namely, difficulties in cleaning and repairing the pumps. Moreover, when introducing anti-turbulent additives using known devices, the structure of polymers may be disturbed when they pass through electric pumps.

The closest in design to the claimed technical solution is a device for dispensing a reagent into a pipeline [patent RU 2300697 C1, publ. 06/10/2007]. The invention relates to the oil and gas industry, in particular to devices for the dosed supply of liquid reagents in oil or gas pipelines, or wells. A device for dispensing a reagent into a pipeline contains a pipeline, a container, a curved tube for supplying liquid from the pipeline to the container, the open end of the curved tube being placed in the pipeline against a fluid flow, and a reagent supply pipe connecting the container to the pipeline. The container is placed horizontally, and inside it, from the side of the curved tube, the piston is hermetically placed. On the opposite side of the container is an elbow connecting the container to the reagent supply pipe. The pipe behind the curved pipe is equipped with a restriction in the liquid flow, and the lower end of the reagent supply pipe is connected to the pipe for its restriction in the reduced pressure zone, and the container below the piston from the side of the curved pipe is equipped with a bleed channel connected to the atmosphere, and above the piston - a loading channel connected to a container serving for dosed supply of reagents into the container. The curved tube at the inlet to the container in front of the piston and the tube for supplying the reagent at the inlet to the pipeline are equipped with fittings with a calibrated hole.

This invention, in terms of its use for the dosed supply of liquid reagents in oil pipelines, has several disadvantages:

the dosed supply of some liquid reagents is performed on the main pipelines, the working pressure of which reaches 5-6 MPa, which increases the risk of destruction of the in-pipe narrowing, which, in turn, can lead to the appearance of defects in the pipeline wall and damage to various nodes of the main pipeline (linear valves, start-up chambers for cleaning and diagnostics (KPSPSOD), mud filters (FGU) at subsequent oil pumping stations (NPS), etc.);

the consumption of the additive dosed into the pipeline depends on the diameter of the calibrated holes of the fittings and the design dimensions of the restriction, which does not allow to quickly change the consumption of the introduced additive.

The technical task of the utility model is to create a more reliable and safe device for introducing the additive, which will allow introducing the additive into the flow of the pumped liquid with minimal costs, as well as quickly and conveniently adjust the concentration of the introduced additive.

This technical result is achieved by the fact that it is proposed a device for introducing additives into the pipeline (hereinafter the device), containing a container with an additive, a reservoir with a piston separator, a tube for supplying additives from a container with an additive in a reservoir with a piston separator, a tube for supplying oil / oil product from a pipeline to a reservoir with a piston-separator, a tube for supplying an additive from a reservoir with a piston-separator to the pipeline, a pipe for draining oil / oil product connected to the reservoir with a piston-separator, playing the role of drainage. The container with the additive is located above the tank to ensure landing in the tank with a piston-separator by gravity (under the influence of gravity). In addition, the device is equipped with shutoff valves, namely, all tubes are equipped with gate valves, a check valve and a throttle valve are installed on the tube for supplying additives from the reservoir with the piston-separator, and there is a throttle valve between the two tubes connected to it. A flow meter is installed on the tube for supplying the additive from the reservoir with the piston separator into the pipeline.

In FIG. 1 presents a diagram of the inventive device.

The device connected to the pipeline 1 contains a container 2 with an additive, a reservoir 3 with a piston-separator, a tube 4, one end of which is connected to the reservoir 3 with a piston-separator, and the other to a section of the pipeline to the throttle valve 12 (section AA ), a pipe 5 connecting the container 2 with the additive and the tank 3 with the piston-separator, the pipe 6, one end of which is connected to the tank 3 with the piston-separator, and the other to the pipe section after the throttle valve 12 (section B-B), tube 7, one end of which is connected to ervuaru 3-divider with the piston, and the second - to a drain system (. in fig not shown). Tubes 4, 5, 6, 7 are equipped with valves 8, 9, 10, 11, respectively. The container 2 with the additive is located above the tank 3 with the piston-separator for the additive to enter the tank 3 with the piston-separator under the action of gravity.

On the pipe 1 between the connected tubes 4 and 6 is a throttle valve 12.

On the tube 6 there is a throttle valve 13, a flow meter 14 and a check valve 15.

The throttle valve 13 is designed to control the filing of the additive in the cavity of the pipe 1 through the tube 6 from the reservoir 3 with the piston-separator, if the flow rate shown by the flow meter 14 is different from the desired calculated value.

The readings of the flow meter 14 allow you to track the amount of additive entering the cavity of the pipe 1 through the tube 6 from the tank 3 with a piston separator.

The check valve 15 is designed to prevent changes in the direction of flow in the tube 6.

The principle of operation of the device is as follows.

Gate valves 8, 10 are closed, and gate valves 9, 11 are open. The additive from the container 2 under the action of gravity enters the tank 3 with the piston-separator and pushes the piston-separator all the way to the left. Upon completion of the complete filling with the additive of the reservoir 3 with the piston-separator, the valves 9, 11 close and open the valves 8, 10, and part of the flow of oil / oil from the area of the pipeline 1 to the throttle valve 12 (section AA) through the pipe 4 enters the tank 3 with the piston-separator and begins to move the piston-separator to the right, due to this, the additive through the tube 6 gets into the area of the pipe 1 after the throttle valve 12 (section BB). Next, the valves 8, 10 are closed again, the valves 9, 11 are opened, the additive enters the reservoir 3 with the separator piston and pushes the separator piston all the way to the left, while forcing oil / oil from the reservoir 3 with the piston separator through the tube 7 through the valve 11 into the drainage system (to hell, not shown).

The device carries out its introduction of the additive without the use of electric pumps, and through its injection into the pipeline 1 due to the pressure drop that creates a working throttle valve 12 mounted on the pipe 1. The throttle valve 12 creates local flow resistance, so the pressure in section AA is always greater than in section BB. The flow rate of the additive dosed in the pipe 1, allows you to adjust the throttle 13.

The proposed device for introducing additives into the pipeline allows the introduction of additives in the cavity of the pipeline and to regulate the amount of input additives. The device is characterized by the absence of additional elements in the pipeline that are not designed for high working pressures of the main oil pipelines and oil product pipelines, the breakdown of which can lead to damage to the pipeline.

The advantages of the proposed device are that it allows you to enter the additive into the cavity of the pipeline without the use of electric pumps and makes it possible to quickly control the flow rate of the introduced additive due to the presence of throttles in the device.

The proposed utility model can be used in the system of transportation of oil and oil products, oil industry.

Claims (1)

A device for introducing an additive into a pipeline containing an additive container, a reservoir with a piston separator, a tube for supplying additives from a container with an additive in a reservoir with a piston separator, a pipe for supplying oil / oil from the pipeline to a reservoir with a piston separator, a supply tube additives from the reservoir with the piston-separator into the pipeline, characterized in that it contains a pipe for oil / oil product removal connected to the reservoir with the piston-separator, a valve on the tube for supplying the additive from the container and with an additive in the reservoir with the piston-separator, a valve on the tube for supplying oil / oil from the pipeline to the reservoir with the piston-separator, a valve on the tube for supplying the additive from the reservoir with the piston-separator in the pipeline, a valve on the tube for drainage of oil / oil connected to the tank with the piston-separator, a throttle valve installed on the pipeline between the two tubes connecting it to the tank with the piston-separator, the throttle valve, a flow meter and a check valve are installed on the tube for supplying additive from the tank to the piston-separator in the conduit.

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