DE1801994C3 - Device for inserting pipelines into the bottom of a body of water - Google Patents

Description

pipe 1 is set with legs 7 and 8 ffiiar will. The flushing frame 4 is advantageously guided on the pipeline 1 via rollers 9 made of plastic. The washing frame has water nozzles 11 and air nozzles 12.

Dv ₁ 'washing frame 4 is connected to a stabilization device which consists of a mast 13 with several tanks 14, IS. By draining or flooding the tanks 14 and 15 by means of the normal working air via a pendulum valve 16, the washing frame 4 is held in its correct position and external. Influences such as a strong cross flow can be compensated. It is also possible to achieve a continuous, slow pendulum movement in the direction of arrow 17 around the axis of the pipeline 1. As a result of this pendulum movement, the nozzles 11 and 12 cover a large area and accelerate the loosening and removal of the soil.

Keeping a longer section of the underwater trench open with the help of rising air Air nozzles are achieved by moving several flush frames 4 connected to one another. The soil under the pipe 1 is washed away and torn up with an ascending stream of air and deposited on the sides of the trench. Part of the soil is kept in suspension. the The pipeline sinks deeper and deeper into the subsoil when the trench is created.

For this purpose 2 sheets of drawings

Claims (1)

to be able to embed in a body of water, lies ^The invention is based on the object of ^{solving the water p} "soil in the area of the pipeline and a device for embedding a rigid pipe laid on a long stretch of water-bottom and keeping it away from the pipe trench until the line even »mg lies down to a predetermined depth with more than the specified depth,
The solution to the problem is that tied flushing frames to the flushing frame each have a mast with several nozzles for tearing open and floating to stabilize and enable a pendulum pressure medium to flow under the pipeline and io tanks are provided, the tanks being floodable and drainable alternately by means of a high pen delivery of soil material from the da- delventil,
by formed trench and with a stabilizing The water and air currents are here vorfungseinrichtung for the production of the vertical part partially to the formation of the pipe trench hm- and herbe position, characterized in that away. Before the bolur is whirled up and discharged, stabilization and enabling a pendulum below the pipe, a mast cutting and crushing of the water bed (13) with several tanks (14, 15) can be provided on the rinsing frame (4) , be made, e.g. B. by upstream whereby the tanks (14, 15) via a pendulum valve and conventional excavators or scrapers.
(16) are alternately drainable and drainable. The washing frames are individually ! »O lying compressor ship supplied with air and water. The stabilization device ensures a vertical position on the pipeline floating washing frame, even if the The invention relates to a device for introducing feed lines through a certain cross flow Chains a bie deposited on a river bed as torque exert on the frame. Every frame Rigid pipeline up to a predetermined length is equipped with four plastic rollers, depth with several, placed over the pipeline, which excludes damage to the pipe insulation. interconnected rinsing frames for the feed. tion of pressure medium to under the pipeline mün- Through the tanks can also be a slow pendulum loin Nozzles for tearing open, floating and moving around the axis of the pipeline to be flushed up of soil material from which this device is made possible. The pendulum movement lets The trench formed and a larger one with a stabilization inlet that is equipped with nozzles direction to produce the vertical position. Coat the surface and thereby accelerate the When laying standard pipelines in geese and transporting the soil away. The pendulum It has been shown that it is usually necessary to drain or flood the left or right the line against water currents, against the tanks reached by means of normal working air, Ice exposure or against hazards from the ship - which is through a pendulum valve in the left or right protect operation. Good protection against derar- tank is headed. This causes the left An embedding of the pipeline or the right chamber creates a buoyancy and thus a risk Into the water, where it is generating turning moment in the soft 40. (The subsurface is necessary, a greater embedment depth. The washing frames are always without special tu because, for example, ship anchors can be lifted or removed from the pipeline deep in measures. can penetrate the bottom of the water or which can be placed back on the pipe. Thus, with overlap easily carried away by currents if a storm leaves the construction site as quickly as possible. However, it is often difficult to dig a pipe trench 45. It is also possible without further ado To be kept open until the pipeline flushes in at any point on the pipeline length of the elastic bending radius is inserted. abort and continue a distance again. The flushing in of cables and flexible lines. gene is known. It is carried out by suction dredgers. In the drawings, one according to the invention, which dredges a trench, is carried out. A device with a device operating according to the flushing method as nozzles and suction devices conveys the floor in closed guide position. It shows
nen lines to the sides of the trench. Through the F i g. 1 laying a steel pipeline in flexible lines always only needs a short scheme, Piece of trench to be maintained to F i g. 2 is a view of a washing frame and FIG the line with a small radius of curvature 55 F i g. 3 shows a side view of the washing frame with to be able to relocate. Steel pipelines can, however, be part of a stabilization device in section, can only be laid with a large radius of curvature because the curvature of the permissible elastic radius of curvature on the water bed 2 of • depends on the radius of curvature. a Sch-, IIßschiff 3 relocated. On the pipeline It is also known that for embedding a pipeline 1 there are several connected one or more flushing frames over the pipe end flushing frames 4, which are set by a compressor line, which extend in the longitudinal direction of the ship 5 via lines 6 with compressed air and Extend pressure pipeline. To stabilize the rinse water are supplied. The flushing frames 4 are lame, weighting is provided, and pressure on the pipeline 1 is pulled back and forth and steltiittel nozzles are at the end of the rider-like on the 65 len creating a pipe trench.
The flushing frame 4 consists of two side boxes to tear open the floor material and convey it up. which are connected in an approximately U-shape with cross braces 10 To also steel pipelines in the simplest way, but otherwise are open to the top and the