RU196299U1 - DEVICE FOR OIL PUMPING UNTIL THE LOWER PRODUCING OIL PIPELINE - Google Patents

Abstract

The utility model relates to the field of pipeline transport, namely, devices for pumping residual oil from oil pipelines. The technical result is to reduce the time of work on pumping oil from the pipeline. A device for pumping oil to the lower generatrix of the oil pipeline, comprising a housing, a pipe installed in the housing with the possibility of vertical movement relative to its longitudinal axis, a manual feed drive, a rod installed in the pipe, a sealing assembly, a process harness installed in the lower part of the housing and consisting of sequentially interconnected bypass pipeline, tee with a tip, made with the possibility of connection with a temporary pipeline, ball valve, tee, ball valve for OSCAL air, the tee is adapted to mount to the housing and connected to the air eliminator and ball valves for air intake and the valve ball, and tee with a tip connected to the bypass duct and ball valve.

Description

The utility model relates to the field of pipeline transport, namely, devices for pumping residual oil from oil pipelines.

The prior art device is designed to remove liquid, in particular oil from the bottom of the pipeline, which can be used in the repair or dismantling of a section of the pipeline. The device comprises a movable pipe, lowered at one end to the bottom of the pipeline and having a seal, a housing sealed to the pipeline, and a pipe on the housing. The housing can be equipped with a removable cover. The device may also contain a screw located inside the pipe with the possibility of rotational motion, fixed in the housing from translational motion. The screw is connected through the gland seal with a device for its rotation. This device is located on the outside of the housing. The screw has a nut connected to the upper end of the pipe. The pipe is secured against rotational movement and has at least one opening in the upper part. The lower end of the pipe is embossed, and the sum of the cross-sectional areas of the relief basins is equal to the cross-sectional area of the pipe. The technical result is an increase in the tightness of seals, ease of operation (patent RU 2151340, publ. 12/27/2003).

The disadvantage of this device is the smaller diameter of the bore of the movable pipe relative to the diameter of the bore of the plunger, which leads to large pressure losses and a decrease in pumping capacity. The fluoroplastic rod seal available on the device is designed for the maximum allowable working pressure in the released pipeline equal to 1 MPa, therefore, the use of this device is possible only when the overpressure in the pipeline is reduced to 1 MPa.

The closest analogue of the claimed utility model is a device for pumping residual oil from a pipeline, which contains a housing, a pipe installed in the housing and made with the possibility of vertical movement relative to its longitudinal axis, a manual feed drive designed to move the pipe in the housing, the rod installed in pipe, a sealing assembly located on the lower end of the housing between the side walls of the housing and the pipe, and a flange spacer connected to the lower end of the housing and made in the form disc in the outer end surface of which are made, at least four threaded bores, into each of which is mounted a bolt choke the air inlet (RU Patent No. 184471 U1, publ. 29.10.2018).

The disadvantages of the device is that for its installation requires additional labor and consumables. In case of depressurization of at least one of the four through-holes located at the end of the flange spacer, in the presence of excess pressure in the pipeline, the pumped liquid may spill and the process of pumping out residual oil from the pipeline to stop.

The technical problem that the utility model addresses is the elimination of the drawbacks mentioned above, providing the possibility of pumping oil while reducing the excess pressure of the pumped oil to atmospheric pressure without stopping the pumping process.

The technical result is to reduce the time of work on pumping oil from the pipeline.

The technical result is achieved due to the fact that the device for pumping oil to the lower generatrix of the oil pipeline, comprising a housing, a pipe installed in the housing with the possibility of vertical movement relative to its longitudinal axis, a manual feed drive, a rod installed in the pipe, a sealing assembly, a technological strapping, installed in the lower part of the housing and consisting of a bypass pipe connected in series, a tee with a tip made with the possibility of connection with a temporary pipe the ode, ball valve, tee, ball valve for air inlet, while the tee is made with the possibility of fastening to the body and to the plunger and is connected to a ball valve for air inlet and a ball valve, and a tee with a tip is connected to the bypass pipe and ball valve.

The development and refinement of the proposed utility model are the following features:

- the bypass pipeline is made in the form of two nozzles interconnected by means of a branch;

- the pipe is made with the possibility of fastening to the housing by means of a flange;

- ball valve for air inlet is configured to install an air vent;

- ball valve for air inlet is configured to install a vacuum gauge.

- the tee is made with the possibility of mounting to the housing and to the plunger by means of flanges.

The essence of the utility model is illustrated by drawings, where in FIG. 1 shows a General view of the device for pumping oil to the lower generatrix of the pipeline; in FIG. 2 shows a sectional view of the device.

1 - nut;

2 - manual feed drive;

3 - a lock-nut;

4 - cargo nut;

5 - stuffing box;

6 - stock;

7 - case;

8 - sealing unit;

9 - pipe;

10 - pipe;

11 - challenge;

12 - ball valve;

13 - tee with a tip;

14 - ball valve for air inlet;

15 - tee;

16 - plunger;

17 - oil pipeline;

18 - a temporary pipeline;

19 - flange.

A device for pumping oil to the lower generatrix of the oil pipeline contains a housing 7 in which a pipe 9 is installed, with the possibility of vertical movement relative to the longitudinal axis of the housing 7, flanges 19 in the lower part of the housing for connection with the process piping.

Technological strapping includes a bypass pipe connected in series, a tee with a tip 13 for connecting to a temporary pipe 18, a ball valve 12, a tee 15, a ball valve for air inlet 14.

The bypass pipeline consists of two pipes 10, interconnected by a branch 11 by a welding joint.

The pipe 10 is made with the possibility of mounting to the housing 7 by means of a flange 19.

Tee 15 provides a change in direction of oil flow. The tee 15 is connected to a ball valve for air inlet 14.

Ball valve for air inlet 14 is configured to install an air vent (not shown in FIG.).

Ball valve for air inlet 14 is made with the possibility of installing a manovacuum meter to control the level of overpressure in the cavity of the pipeline with the ability to determine the residual oil level, with the ability to supply air and release the inert-gas mixture when the pipeline is released by displacement.

The bypass pipe is connected to the ball valve 12 by means of a tee with a tip 13.

The tee with a tip 13 is made with the possibility of connection with a temporary pipe 18.

A nut 1 fixes a manual feed drive 2, which is a flywheel, a lock nut 3, and a load nut 4 for a compressed gland assembly 5 in the form of a fluoroplastic seal on a rod 6, which is installed in the pipe 9.

When the rotation of the manual feed drive 2, the pipe 9 moves vertically in the housing 7 until it stops in the bottom of the oil pipeline 17.

The sealing unit 8 is located in the lower part of the housing 7 between the side walls of the housing 7 and the pipe 9 and serves to prevent the ingress of air into the housing 7.

The tee 15 connected to a ball valve for air inlet 14 is configured to be attached to the housing 7 and to the plunger 16 by means of flanges 19.

Tee 15, ball valve 12, ball valve for air inlet 14, bypass pipe, tee with tip 13 are fixed to each other by welded joints.

Tee 15 serves to distribute the flow of oil.

At an angle of 60 ° to the tee 15, a ball valve for air inlet 14 is welded.

Ball valve for air inlet 14, connected to a tee 15, has a multifunctional purpose:

- during the release of the oil pipeline 17 from the pumped oil, a manovacuum meter (not shown) is mounted on the ball valve for air inlet 14 to monitor the pressure in the released oil pipe 17. If there is vacuum in the oil pipe 17, air is supplied through the ball valve for air inlet 14 into the cavity of the oil pipeline 17;

- ball valve for air inlet 14 can serve as an opening for measuring the residual oil level in the oil pipeline 17;

- when installing this device for work to displace oil from the oil pipeline 17 through the ball valve 14, it is possible to discharge excess inert gas to prevent the inert-gas mixture from entering the pump cavity (not shown in Fig.), and through the pipe 9, lowered to the lower generatrix of the oil pipeline 17, simultaneously with the release of an inert-gas mixture to pump oil. In this case, the freed oil pipeline 17 will be a buffer tank.

The operation of the device for pumping oil to the lower generatrix of the pipeline is as follows.

The device is installed to free the oil pipeline from the pumped oil to the plunger 16 for pumping out by fixing the flange 19 to the plunger 16 installed on the cut-off section of the pipeline 17.

After opening the ball valve 12 and the plunger 16, oil under the influence of residual pressure in the cut-off section of the pipeline 17 begins to be fed through a tee 15, a ball valve 12 and a tee with a tip 13 to the temporary pipe 18.

When reducing the pressure in the oil pipe 17 to the atmospheric pipe 9 by rotating the manual feed drive 2, lower it to the lower generatrix of the oil pipe 17, the ball valve 12 is turned off and oil enters the temporary pipe 18 only through the body of the device 7. For gradual air inlet into the cavity of the oil pipe 17 for alignment atmospheric pressure, to avoid creating a vacuum in the cavity of the pipeline 17, open the ball valve for air inlet 14. After completion of the process of releasing the pipeline 17 before dismantling the device dnimayut pipe 9 to the top.

When carrying out work to free the oil pipeline 17 by displacement, the oil pipeline 17 serves as a buffer tank. The ball valve 12 is closed, the pipe 9 is lowered to the lower generatrix, the ball valve for air inlet 14 is open. The pumped oil through the housing 7, the bypass pipe, the tee with tip 13 will enter the temporary pipe 18, and the inert-gas mixture through the tee 15 and the valve ball for air inlet 14 and mounted on it an air vent will enter the atmosphere.

The inventive device for pumping oil to the lower generatrix of the pipeline provides the ability to pump oil while reducing the excess pressure of the pumped oil in the pipeline 17 to atmospheric level without stopping the pumping process, which reduces the time required for pumping oil from the pipeline.

Claims (6)

1. A device for pumping oil to the lower generatrix of the oil pipeline, comprising a housing, a pipe installed in the housing with the possibility of vertical movement relative to its longitudinal axis, a manual feed drive, a rod installed in the pipe, a sealing assembly, characterized in that it is equipped with a technological strapping, installed in the lower part of the housing and consisting of a bypass pipeline connected in series with each other, a tee with a tip, made with the possibility of connection with a temporary pipeline, tap ovogo, tee, the ball tap air entering the tee configured to be attached to the housing and connected to the air eliminator and ball valves for air intake and the valve ball, and tee with a tip connected to the bypass duct and ball valve. 2. The device according to claim 1, characterized in that the bypass pipeline is made in the form of two nozzles interconnected by means of a branch. 3. The device according to p. 2, characterized in that the pipe is made with the possibility of attachment to the housing by means of a flange. 4. The device according to p. 1, characterized in that the ball valve for air inlet is configured to install an air vent. 5. The device according to p. 1, characterized in that the ball valve for air inlet is configured to install a vacuum gauge. 6. The device according to p. 1, characterized in that the tee is made with the possibility of mounting to the housing and to the plunger by means of flanges.

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