Method and device for stripping pipeline

FIELD: laying or reclaiming pipes.

SUBSTANCE: method includes removing upper layer of spoil, developing side trench with disposal the spoil by damping. The development of side trenches is performed step-by-step. The stripped trench is provided with stripping machine, the side trench are deepened by the working members of the stripping machine below the bottom of the pipeline and pipeline is continuously stripped by trenching machine and stripping machine when it moves forward. The stripping machine has frame with running carriages, clamps, supporting members and mechanism for forward motion.

EFFECT: enhanced efficiency.

3 cl, 4 dwg

 

The invention relates to the field of repair of trunk pipelines, and in particular to methods and equipment for opening the oil(gas)pipelines in route conditions

From the description of the patent of the Russian Federation No. 2163320 "mode of production Stripping", IPC F 16 L 1/026 publ. Bull. from No. 5, 2001 there is a method of opening of the pipeline in which the top layer of soil cut by the excavator, and the development of rocky or frozen ground is carried out using vzryvopozharnoy setup (VSU) using liquid explosive mixtures (GWS). The described method is suitable for extracting oil pipelines laid in rocky and frozen ground.

There is a method of opening the oil(gas)pipelines and device for its implementation from German patent No. 19514052, IPC F 16 L 1/026, publ. 19.10.95, where the repaired area off the upper part of the soil to a depth of up to a plane tangent to the outer surface of the pipeline with the formation of the vertical walls of the trench. After using the machine on tracks with symmetrically mounted chain working bodies with devices for transportation of soil to the developing blade side of the trench to a depth sufficient to use the intake milling of the working body. Further, under the pipeline start milling the working body and the development side is ransei carried out simultaneously with the digging during continuous movement of a caterpillar.

However, the described method and apparatus have a number of disadvantages: the machine is complicated to manufacture, does not exclude damage to the pipeline.

Closest to the claimed method is the current in the RF way of opening the trunk pipelines, described in EP 39-00147105-015-98 "Rules overhaul of the main oil pipelines", Ufa, IPTER, 1998, p.7-8 (p), 163 (rieb), 164-165 (1,2, PP, 3, 4, 6) (prototype attached) and "Machine for removal of soil from under the oil(gas)pipelines" in patent No. 2146784 (prototype), IPC F 16 L 1/028, publ. bull. from No. 8, 20 03.2000.

In accordance with the described manner at the opening of the pipeline, first remove the upper fertile layer of soil with a bulldozer, then using a shovel excavator develop lateral trench depth below the bottom of the pipe, symmetrical relative to the longitudinal axis of the pipeline, manually remove the soil directly from the pipeline, and the removal of soil from under the pipeline to produce a device for digging.

However, this method of opening limits the pace line work performance of two single-bucket excavators, as the more shovel excavators for opening the pipeline to apply it is impossible. The use of machines of continuous action to increase the Oia momentum is limited by the terrain and ground conditions.

The objective of the invention is to increase the rate of Stripping works by applying new technology and machinery for the implementation of this technology.

This object is achieved in that in the proposed method, including removal of the top layer of soil with a bulldozer, the development of lateral trenches with the removal of the soil in the side dumps using a single bucket excavators, development of lateral trenches carried out in stages: initially below the horizontal axial plane of the pipe not more than a quarter of its outer diameter with a single bucket excavators, and then at the open part of the pipeline is mounted Stripping machine, deepen side of the trench working bodies Stripping machine below the bottom of the pipe and continue the continuous opening of the pipeline shovels and Stripping machine during its progressive movement with the development of lateral trenches and removing the soil in the side dumps with transporting devices Stripping machine.

For implementing the method used Stripping machine containing the frame and undercarriage bogies, having clamps for piping support elements and the mechanism of translational movement, working bodies, symmetrically placed on either side of the vertical axis of the machine, in which each working body done the n in the form of a vertically arranged rotor, having a frame fixed to the frame of the machine, provided with a rotation drive device for removal of the substrate in a lateral blade, made in the form of a conveyor, and adooorable set with inner and outer sides of the rotor, and the inner adooorable installed with the possibility of removal of the substrate from the surface of the pipeline before running the truck, and external - with adjustable tilt angle in the vertical plane.

In addition, to prevent damage to the pipe when installing the machine on the pipe frame with ends fitted symmetrically to the vertical telescopic support rods can be locked down their positions, the distance between them is not less than the diameter of the pipeline.

For cleaning the inner surface of the bucket body work machine equipped with drive cleaning device.

Advantages of the method and Stripping machine for its implementation, its design features are outlined below and illustrated by the drawings, where:

- figure 1 shows a diagram of the opening of the pipeline used in the present method (prototype);

- figure 2 shows a diagram of the opening of the pipeline of the proposed method;

- figure 3 is a front view of the machine, mounted on a pipe;

- figure 4 is a side view on a machine (rotary working body srvc what UPE transparent).

The currently used method of opening the pipeline depicted in figure 1 and includes: removal of top fertile layer (zone I) a bulldozer, then the top layer and sides of the trench (area II) develop the shovel to remove the soil in the plow to a depth below the bottom of the pipe enough to fit under the intake pipe machine (or device for digging and soil removed from under the pipeline, manually remove the soil directly in the pipeline and under the pipeline (zone III) excavating machine or device for digging).

The proposed method (figure 2) and the opening of the pipeline when it is used is as follows.

As in the currently accepted method, first remove the top (fertile) layer using a bulldozer (zone I), further development of lateral trenches carried out in stages: initially below the horizontal axial plane of the pipe not more than a quarter of its outer diameter with a single bucket excavator (zone II). The specified depth of development needed to accommodate grips Stripping machine. Next, the side of the trench develop mounted on the exposed part of the pipeline Stripping machine driven translational movement by pipeline (area IIA), equipped with a rotary working the bodies deepening the side of the trench below the bottom of the pipe. After continue continuous opening of the pipeline shovels and Stripping machine, in which the Stripping machine moves through the pipeline and develops the side of the trench. Remove the soil in the side dumps carry out transporting device rotary working body Stripping machine. Remaining under the pipeline soil (zone III) develop and remove the known method and device.

Stripping machine for implementing the method of opening the pipeline contains a frame 1, provided with supporting elements - sliders 1, 3 translational mechanism to move the machine along the pipe 4 to the road trucks 5. The carriages 5 are equipped with grippers 6 of the pipe 4. The traveling trolley 5 is installed electrotherapist 7. Stripping machine is working bodies, vertically arranged rotor 8 with the rotation drive 9, placed on both sides of the vertical axis of the machine. Each of the rotors is provided with a frame 10. The frame 10 of the rotor connected to the frame 1 of the machine.

Inside the rotor 8 is fixed device for removal of the substrate in the blade, preferably in the form of conveyors 11. The inner and outer sides of the rotor 8 is installed adooorable 12 and 13. Internal adooorable 12 is fixed with the possibility of the of ontact with the pipe 4 and its cleanup before running the truck 5, and outer 13 is fixed with adjustable tilt angle in the vertical plane to obtain the corresponding profile of the trench depending on soil conditions.

Frame 1 Stripping machine the ends provided with symmetrically placed vertical support rods 14, the distance between which is not less than the outer diameter of the pipe 4, which eliminates the possibility of damage to the pipe 4 when installed and the depth of the machine. Rod 14 is telescopic with the ability to regulate their length vertically and fixing in position.

To avoid build-up of soil in the bucket rotor 8 provided with a driven treatment devices (not shown).

Does Stripping machine according to the above method as follows.

After opening the pipeline 4 shovels to a depth necessary to accommodate the grippers 6 Stripping machine for pipeline 4, namely below the horizontal axial plane is not more than a quarter of its outer diameter, mounted Stripping machine on the pipe 4 with the included drives conveyors 11 and the rotor 8. This extended rod 14 to prevent damage to the pipeline 4 rotors 8. Before placing the machine on the floaters 2 with detent rod 14 includes a drive grippers 6 of the pipe 4 and the drive mechanism 3 translational what about the movement of the machine in line 4, continuing the opening of the pipe 4 with the development of lateral trenches to a depth below the bottom of the pipe 4. The slope of the exterior of adooorable 13 is determined depending on soil density.

From the buckets of the rotor 8, the soil is unloaded onto the conveyors 11 and sent to the dump. The treatment device within the rotor 8 removes the remaining buckets of soil, which is poured in buckets and placed on the conveyor 11.

Stripping machine provides continuous development of lateral trenches. The ground from under the pipeline is removed known excavating machine that is installed after Stripping.

The application of the Stripping machine of the described construction allows to increase the rate of opening of the pipeline by reducing the amount of work performed inefficient shovels, as well as by reducing cycle digging.

1. The way the opening of the pipeline, including the removal of the top layer of soil with a bulldozer, the development of lateral trenches with the removal of the soil in the side dumps using a single bucket excavators, characterized in that the development of lateral trenches carried out in stages: initially below the horizontal axial plane of the pipe not more than a quarter of its outer diameter with a single bucket excavators, and then at the open part of the pipeline mo which can be carried on Stripping machine, deepen side of the trench working bodies Stripping machine below the bottom of the pipe and continue the continuous opening of the pipeline shovels and Stripping machine during its progressive movement with the development of the lateral trench and remove soil to the side dumps with transporting devices Stripping machine.

2. Stripping machine for implementing the method according to claim 1, containing a frame and undercarriage bogies, having clamps for piping support elements and the mechanism of translational movement, working bodies, symmetrically placed on either side of the vertical axis of the machine, characterized in that the working body in the form of a vertically arranged rotor having a frame fixed to the frame of the machine, provided with a rotation drive device for removal of the substrate in a lateral blade, made in the form of a conveyor, and adooorable set with inner and outer sides of the rotor, and the inner adooorable installed with the possibility of removal of the substrate from the surface of the pipeline before running the truck, and external - with adjustable tilt angle in the vertical plane.

3. Stripping machine according to claim 2, characterized in that its frame with the ends provided with symmetrically placed vertical rest p / the practical support rods can be locked down their positions, the distance between them is not less than the diameter of the pipeline.



 

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