RU222072U1 - TEMPORARY PLACEMENT DEVICE FOR LAUNCHING FLOW PROJECTILES INTO THE MAIN PIPELINE - Google Patents

Abstract

The utility model relates to equipment used in the operation of main pipelines and can be used in the oil and gas industry to launch cleaning, diagnostic and other in-line projectiles into the main pipeline. The proposed temporary placement device for launching flow projectiles into the main pipeline contains a launch chamber, including a housing, one end of which is equipped with an end valve, and the second end is equipped with an adapter, to which a linear pipe with shut-off valves is connected, piping made in the form of a bypass line with outlet equipped with shut-off valves. One end of the bypass line is connected to the line pipe. The second end of the bypass line is connected to a gas sampling unit located opposite the end valve. The end of the linear pipe and the end of the gas sampling unit are designed to be connected to the linear part of the main pipeline. The device contains a pressure equalization line in the housing, equipped with shut-off valves and connecting the bypass line with the housing, and a pressure equalization line in the branch pipe, equipped with shut-off valves and connecting the pressure equalization line in the housing with the branch pipe. The shut-off valve for the pressure equalization line in the housing is located between the bypass line and the pressure equalization line in the nozzle. The technical result consists in eliminating the reverse movement of the flow projectile at the initial moment of its launch into the main pipeline.

Description

The utility model relates to equipment used in the operation of main pipelines, and can be used in the oil and gas industry to launch cleaning, diagnostic and other in-line projectiles into the main pipeline.

A temporary chamber for launching means of cleaning and diagnostics of pipelines is known, which contains a cylindrical body with an end valve on one side, located on the other side and an eccentric transition section rigidly connected to the body, having a cylindrical part with an outlet diameter corresponding to the diameter of the pipeline and configured to be welded to pipeline, a support frame rigidly connected to the housing. In this case, the chamber has technological connections for supplying oil, for releasing air, for draining the working medium from the chamber, for front refilling and installation of a pressure gauge, the support frame is made in the form of a slide (according to patent RU 52461, F17D 3/08, published on March 27, 2006 ).

The closest technical solution is a temporary placement device for launching flow projectiles into the main pipeline; it contains a launch chamber, including a housing, one end of which is equipped with an end valve, and the second end is equipped with an adapter, to which a linear pipe is connected, piping made in the form of a bypass line with a branch. The linear branch pipe, piping and pressure relief units are equipped with shut-off valves. The end cap cover is equipped with a locking device made in the form of a bayonet connection. The end of the linear pipe is designed to be connected by welding to the linear part of the main pipeline. In the upper part of the linear branch pipe there is mounted a branch pipe with an end gate, designed to accommodate a device for storing in-line projectiles into the chamber body for launching (according to patent RU 150802, F17D 3/00, publ. 02/27/2015).

The disadvantage of the analog and prototype is that in the event of an operator error associated with a violation of the sequence of opening and closing the valves, reverse movement of the flow projectile is possible. In this case, it will be necessary to open the end gate and re-refill the flow projectile.

The technical result of the proposed utility model is to eliminate the reverse movement of the flow projectile at the initial moment of its launch into the main pipeline.

The specified technical result is achieved in that the temporary placement device for launching flow projectiles into the main pipeline contains a launch chamber, including a housing, one end of which is equipped with an end valve, and the second end is equipped with an adapter, to which a linear branch pipe with shut-off valves, piping, made in the form of a bypass line with an outlet, equipped with shut-off valves, one end of the bypass line is connected to a linear branch pipe, the second end of the bypass line is connected to a gas sampling unit located opposite the end valve, the end of the linear branch pipe and the end of the gas sampling unit are designed to be connected to the linear part of the main pipeline, characterized in that it contains a pressure equalization line in the housing, equipped with shut-off valves and connecting the bypass line with the housing, and a pressure equalization line in the branch pipe, equipped with shut-off valves and connecting the pressure equalization line in the housing with the branch pipe, while the line shut-off valves The housing pressure equalization line is located between the bypass line and the pressure equalization line in the nozzle.

The utility model is illustrated by drawings, which show:

Fig. 1 - launcher, front view;

Fig. 2 - launcher, top view.

A temporary placement device for launching flow projectiles into the main pipeline (hereinafter referred to as the launch device) contains a launch chamber, including a housing 1, one end of which is equipped with an end valve 2, and the second end is equipped with an adapter 3, to which a linear pipe 4 is connected shut-off valves 5.

Adapter 3 is made eccentric. The adapter 3 ensures, by its shape, that the lower part of the camera housing 1 is positioned for launching at the same level as the linear pipe 4.

The launch device also contains piping, made in the form of a bypass line 6 with an outlet 7 equipped with shut-off valves 8.

The launch device contains two pressure relief units 9 and 10. The pressure release unit 9 is located on the body 1 of the launch chamber, and the pressure release unit 10 is located on the linear pipe 4.

The launch device contains a pressure equalization line 11 in the housing and a pressure equalization line 12 in the nozzle. Line 11 connects bypass line 6 to body 1. Line 12 connects line 11 to linear pipe 4.

Pressure relief units 9, 10 are equipped with shut-off valves 13. Pressure equalization lines 11, 12 are equipped with shut-off valves 14, 15, respectively. Shut-off valve 14 of line 11 is located between bypass line 6 and line 12.

The end cap cover 2 is equipped with a locking device made in the form of a bayonet connection.

One end of the bypass line 6 is connected to the linear pipe 4, and the second end of the bypass line 6 is connected to the gas sampling unit 16 located opposite the end valve 2 and connected to the main pipeline, for example, by welding or flanges. Branch 7 connects bypass line 6 to housing 1.

The bypass line 6 is equipped with shut-off valves 17 and 18. The shut-off valve 18 opens and blocks the gas flow along the bypass line 6 from the gas sampling unit 14. The shut-off valve 17 opens and blocks the gas flow into the linear pipe 4.

The end of the linear branch pipe 4 is designed to be connected, for example, by welding or flanges with the linear part of the main pipeline, and the linear branch pipe 4 itself, from the side of the specified end, is equipped with a signaling device 19 for the passage of a flow projectile into the linear part of the main pipeline, for example, a lever one.

As shut-off valves 5, 8, 13, 14, 15, 17 and 18, for example, ball valves or gate valves can be used.

Application (implementation)

In a section of the main pipeline designated for launching a flow projectile, for example a cleaning piston, a pipe reel is cut out with overall dimensions that make it possible to install a launching device instead of the specified pipe reel. The gas sampling unit 16 is connected to one of the ends of the main pipeline obtained after cutting the pipe coil. To the opposite end of the main pipeline, obtained after cutting the pipe coil, is connected the linear pipe 4 assembled with shut-off valves 5, adapter 3 and housing 1 of the chamber for starting.

After this, for example, by welding or flanges, the bypass line 6, the outlet 7 and the pressure equalization lines 11 and 12 are connected, after which the starting device is considered ready for operation.

The shut-off valves 17, 18 are opened while the shut-off valves 5, 8, 13, 14, 15 are closed, thereby ensuring the passage of the gas flow transported through the main pipeline through the bypass line 6.

Opposite the end gate 2, a loading table 20 is installed, on which a flow projectile is placed, which, using a reeving device (not shown in Fig.), is inserted into the chamber body 1 for launching.

Next, close the end valve cover 2 with a locking device, made, for example, in the form of a bayonet connection.

After receiving permission to launch a flow projectile into the main pipeline, in the case of using a lever indicator for the passage of a flow projectile into the linear part of the main pipeline 18, its flag is set to a horizontal position.

Sequentially open shut-off valves 14 and 15, located on pressure equalization lines 11 and 12, respectively. After equalizing the pressure in the bypass line 6 and inside the housing 1 of the chamber for launch, first open the shut-off valve 5, and then the shut-off valve 8.

Next, close the shut-off valves 14 and 15, located on the pressure equalization lines 11 and 12, and then close the shut-off valve 17, located at the end of the bypass line 6 connected to the linear pipe 4. This ensures the passage of the gas flow transported through the main pipeline through the launch chamber . Under the influence of the specified gas flow, the flow projectile is carried into the linear part of the main pipeline, as evidenced by the activation of the lever signaling flag 19 for the passage of the flow projectile into the linear part of the main pipeline.

Next, open the shut-off valve 17, located at the end of the bypass line 6, connected to the linear branch pipe 4, and close the shut-off valves 5, 8. Thus, the flow of gas transported through the main pipeline is ensured through the bypass line 6.

Next, the in-line projectile moves along the main pipeline to a device for receiving in-line projectiles from the main pipeline.

The pressure inside the launch chamber is released by opening shut-off valves 13 located at pressure relief units 9 and 10.

After completing the operation of receiving a flow projectile by means of a device for receiving flow projectiles from the main pipeline, the launching device is dismantled in the reverse order of assembly, and a new pipe spool is installed in its place.

The connection diagram of the pressure equalization line in the housing and the pressure equalization line in the nozzle described in the utility model, as well as the location of the shut-off valves on them, make it possible to eliminate the reverse movement of the flow projectile at the initial moment of its launch. When equalizing the pressure in the chamber for starting, a situation in which pressure begins to flow into the nozzle before the housing does is eliminated. This is achieved due to the fact that the shut-off valves of the pressure equalization line in the nozzle are installed in series with the shut-off valves of the pressure equalization line in the housing, which eliminates the supply of pressure to the nozzle without supplying pressure to the housing.

Thus, the proposed technical solution eliminates the reverse movement of the flow projectile at the initial moment of its launch into the main pipeline, and thereby makes it possible to achieve the stated technical result.

Claims (1)

A temporary placement device for launching flow projectiles into the main pipeline, containing a chamber for launching, including a housing, one end of which is equipped with an end valve, and the second end is equipped with an adapter, to which a linear pipe with shut-off valves is connected, piping made in the form of a bypass line with outlet, equipped with shut-off valves, one end of the bypass line is connected to a linear branch pipe, the second end of the bypass line is connected to a gas sampling unit located opposite the end valve, the end of the linear branch pipe and the end of the gas sampling unit are designed to be connected to the linear part of the main pipeline, characterized in that , which contains a pressure equalization line in the housing, equipped with shut-off valves and connecting the bypass line with the housing, and a pressure equalization line in the branch pipe, equipped with shut-off valves and connecting the pressure equalization line in the housing with the branch pipe, while the shut-off valves of the pressure equalization line in the housing are located between bypass line and pressure equalization line in the nozzle.