SU1052771A1 - Method of laying underwater pipeline and device for fixing pipeline under water - Google Patents

Abstract

1. The method of laying the underwater pipeline, enclosed in the pipeline at the bottom of the reservoir,. diving into the ground of the bottom of a reservoir of paired. ankerovye systems and fixing them on the pipeline, I also distinguish that, in order to simplify laying by reducing underwater work, the anchoring systems are fixed on the pipeline near the reservoir, and in the transport one, along the axis the pipeline, the position, and the immersion of the anchor systems are made after they are turned into a vertical position. 2, Device for securing the pipeline under water, including an upper traverse fixed on the pipeline, with guides placed along its ends perpendicular to the axis of the traverse and installed in linearly displaceable axial piles, which are To expand the operational capabilities of the device by allowing it to be delivered to the bottom of the reservoir together with the pipeline, the guides are installed at the ends of the pipelines with the possibility of rotation around its axis and fixed tion in the transport along the pipe axis position and the anchoring piles are provided with retainers of their extreme positions at a linear movement.

Description

The invention relates to construction and can be used in the construction of subsea pipelines.

There is a known method of laying a subsea pipeline, which consists in installing the pipeline and the water line and further placement on the bottom of the water body ij.

However, providing a reduction in underwater work, this method is not effective enough, since it involves the expenditure of a large amount of cement-in-paste materials and metal. ;

The closest to the present invention is the method of laying the underwater pipeline, which consists in placing the pipeline at the bottom of the reservoir, immersing the paired anchor systems in the bottom of the reservoir and fixing the latter on the pipeline 2.

The disadvantage of this method is the need for a significant amount of underwater work due to the separate flow of the pipeline and anchor systems to the bottom of the reservoir, as a result of which the laying of the pipeline remains difficult.

The purpose of the invention is to simplify laying by reducing underwater operations.

This goal is achieved by the fact that according to the method of laying the underwater pipeline, including placing the pipeline at the bottom of the reservoir, plunging anchor systems in the bottom of the reservoir and fixing the latter on the pipeline, the last operator takes place at the reservoir, and in the transport, along the axis of the pipe core, position, and the immersion of anchor systems is made after they are turned into a vertical position.

A device for securing the pipeline under water, made in the form of a heavy concrete layer over the insulating coating of the pipeline l, is known.

However, it has the advantage of being able to deliver to the bottom of a reservoir together with a pipeline, the device is inefficiently 6-fold efficient, since it presupposes the use of a large amount of cement-binding materials and reinforcing metal.

The closest to the proposed iiviy is a device for securing the pipeline pipe at the bottom of the reservoir, including an upper traverse fixed on the pipeline with directions placed along its ends perpendicular to the axis of the traverse and the linearly mounted anvil hydraulic subsurface piles Vj

A disadvantage of the known device is the impossibility of its delivery to the bottom of the reservoir together with the pipeline, as a result of which the operational capabilities of the device are limited.

The purpose of the invention is to expand the operational capabilities of the device by providing the possibility of its delivery to the bottom of the reservoir along with the pipeline.

This goal is achieved by the fact that in the device for securing the pipeline under water, including the upper yoke fixed on the pipeline with guides placed along its ends perpendicular to the axis of the yoke and guides installed in them with the possibility of linear movement with the possibility of rotation around its axis and fixation in the transport, along the pipeline axis, the position, and the anchor piles are equipped with xators of their extreme positions during linear movement .

FIG. 1 shows a device for securing the pipeline under water in a working position, frontal sectional view; Fig 2 is the same, top view; Fig, 3 - pulled through the pipeline with the device in the transport position, side view.

The device for securing the pipeline under water includes a traverse 2 fixed on the pipeline 1 upstream to the yoke with its axes perpendicular to the axis located so that the rails of the guides 3 and the anchors hydraulically piled installed for linear movement in them. The latter are hollowed out of reinforced concrete and are immersed in the soil due to the erosion of the soil under their bases, carried out through the cavities of the 5 piles. The guides 3 are mounted at the ends of the traverse. With the possibility of turning around the hinge pins 6, located on the traverse axis, and fixing in the transport position of FIG. 3) by means of locking rods 7. The laser piles 4 are provided with the lower 8 and upper 9 latches with the stop-10 for fixing the piles in the extreme lower and upper positions with linear displacement. In accordance with the method of laying the underwater pipeline, the latter, at the water's edge, are equipped with twin anchor pins 4, which are fastened to the pipeline with a vertical beam covered by 2 devices and clamps 11 associated with the traverses. Anchor piles 4 are located in one of them guiding positions, are fixed by the hoppers 8 and occupy the transport position close to the parallel axis of the pipeline, with their extended ends on the upper surface of the pipeline by means of locking rods 7. After the transport irovki and associated piping tee predetermined

On the bottom of the reservoir, the anchorage piles 4 are rotated into the vertical position by the tension of the control ropes 12 and the lower axes are removed (the tensioners 8 are tensioned by the ropes 13. In the vertical position of the anchor piles, they start hydraulic washing of the ground at the base of the piles , as a result of which the latter are gradually deepened before the spring-loaded upper 4xaxors 9 and the lugs 10 come into operation. Thus, due to the possibility of attaching anchor piles to the water pipeline and their subsequent reversal reduction of underwater operations during the laying of the underwater pipeline and extension of the operational capabilities of the device for the freezing of the pipeline under water were extended to the vertical position and delivered to the bottom of the reservoir together with the transported pipeline.

WS.f

Claims (2)

1. The method of laying an underwater pipeline, which consists in placing the pipeline on the bottom of the reservoir, immersing in the soil the bottom of the reservoir of paired. Anchor systems and fixing the latter on the pipeline, which consists in that, in order to simplify laying by reducing underwater work, fixing Anchor systems on the pipeline are produced at the reservoir, and in the transport, along the axis of the pipeline, position, and the immersion of the anchor systems is carried out after they are turned into a vertical position. 2. A device for securing the pipeline under water, including the upper beam fixed to the pipeline with guide rails placed at its ends perpendicular to the axis of the beam and installed in them with the possibility of linear movement of hydraulically loaded anchor piles, characterized in that, in order to expand operational the device’s capabilities by providing its delivery to the bottom of the reservoir along with the pipeline, guides are installed at the ends of the traverse with the possibility of rotation around its axis and fixing in transport, along the axis of the pipeline, position, and the anchor piles are equipped with latches ’of their extreme positions for linear movement.