DE1108622B - Procedure for the assembly of pipes in the water to form a pipeline - Google Patents

Description

Method for assembling pipes in the water to form a pipeline It is known in the construction of culverts (i.e. in the construction of pipelines to cross a river, a harbor or the like) thereby the pipes to the necessary length to assemble on land and thus in the dry, that one builds a slipway on the bank above the water level, on which the pipes are mounted and then lowered into the water.

It is also known to use a dock construction to the side of the river in a suitable manner Excavate a dry construction pit in which the pipes can be assembled undisturbed can be. Then this excavation is flooded and the finished pipeline (after piercing the dividing dam) swam out into the open water.

It is no longer new either, the pipes on the platform of a ship put together piece by piece and then (similar to laying submarine cables) from the ship from lowering into the water.

Finally, it is also known to attach the pipes at right angles to the bank To assemble land (on the surface of the land) into a string and then with winches or the like into the stream.

These last two procedures, however, are only common when the culvert does not have the well-known squat trapezoidal shape, but practically only one straight long rod represents, which only on the river bottom one of the river cross-section adopts adapted form.

It is also known that the pipes above the water level and above the to assemble already finished dug channel in the dry by that one brings fixed or floating scaffolding into the water, on which the pipes are free assembled hanging over the water and then lowered by means of winches.

Finally, it is also known when using large floating cranes and using ball sockets, the pipe ends to be connected freely above the To mount water floating, whereby the already assembled pipe strings are stepped be lowered and deposited on the river bed.

It is also known that the pipes are protected by a bungee and emptied pit right on the spot at the bottom of the river in the dry assemble.

However, all of these methods of assembling the pipes into a roofer are very costly. They also require a lot of space on the bank or special ships, or they hinder shipping traffic. 5 For this reason there has also been a move to assemble the culvert in sea areas with changing tidal water levels by laying it out on dry land parallel to the bank and then exploiting the ebb and flow of the tide by literally flooding it at high tide and "drying it out" at low tide let. It was then possible to assemble the pipes in the dry between high and low tide, and then easily swim them out into the water during high tide by adding floats or pumping out the pipe, which gave it the necessary buoyancy.

However, this latter method is only applicable to smaller diameters common. It assumes a suitable bank area. As a rule, however, the banks are unsuitable, e.g. B. too steep, too curvy, too built up or too swampy.

In any case, as you can see, the question of the assembly area is of prime importance Significance for culvert construction.

The present invention now offers the possibility of assembling the pipes on the water even with unsuitable bank conditions without great ship effort. Experience has shown that a water surface of sufficient length can always be found at a not too great distance from the dumping site. All you need is a small swimming pool. The high costs of building slipways, docks, trenches, special ships, etc. are eliminated. In the present invention, e.g. B. a one-piece or two-piece floating box 1 built around the junction of two pipe ends 2 and 3. This floating box 1 is then sealed against the two pipe ends 2 and 3 by means of seals 4, as FIGS. 1 to 4 show. Before this, the pipe ends are expediently closed by means of blind flanges 5 , whereby the buoyancy is used and no water can penetrate into the pipes.

Then, the float chamber 1 is pumped out, so that the two pipe ends to be joined 2 and 3 now in the dry liegen._ The float chamber 1 is completely open in the rule above. So you can get in and out of this box unhindered. During the different water levels (ebb and flow) the box floats up and down on the water together with the two pipes to be connected, and the fitters working in it can connect the two pipe ends undisturbed in the dry after the blind flanges 5 on the two Pipe ends have been removed beforehand.

In the drawing (Fig. 1 to 3) the floating box 1 is drawn as a one-piece box.

The openings 6 in the end walls of the floating tank 1 are circular cutouts with a sufficiently large diameter so that, for. B. in the case of a flange connection, the flanges also pass through this opening.

If you make the swimming pool out of wood, it is natural in the water in any case buoyant and therefore easy to handle.

The two openings 6 in the end walls are z. B. framed by iron pipe stub 7, to which the seals 4 may be unlaced waterproof, as shown in FIGS. 2 and 3. The other end of each seal is immediately laced onto the associated pipe, with any folds in the seal being laid up into the anhydrous zone. If the swimming box 1 is now pumped empty, water can no longer penetrate the box from the outside. This sealing principle is expediently carried out twice on each end wall in order to increase safety. In FIGS. 2 and 3 , however, only one seal is drawn on each end face for the sake of clarity.

In order to prevent the flotation box 1 from tipping over, it will expediently be equipped with two lateral floats or pontoons 8 or the like and connected to these via iron girders 9 to form a rigid unit, as shown in FIGS. 1 to 3 .

Understandably, when the Schwinunkastens 1 is pumped out, a corresponding buoyancy arises. In order to prevent undesired floating of the box, the pumped-out water is advantageously transferred into the two adjacent pontoons 8 so that nothing changes in the diving depths of these floating bodies connected to form a unit. The height of the floating box 1 then remains unchanged in the water. The two pontoons 8 are expediently provided with inner bulkheads so that undesirable scuffing movements do not occur within the pontoons when the water is pumped in, as a result of which the entire unit could possibly lie unstable in the water. By more or less strong flooding of the pontoons, the height of the unit in the water can also be precisely regulated. If the two pontoons are chosen to be large enough, they can possibly absorb the buoyancy that arises when the floating tank is pumped out due to their own weight alone, which makes it unnecessary to transfer the pumped water into the pontoons.

When pumping out the floating box 1 , the external water pressure also tries to push the two pipe ends 2 and 3 deep into the box, d. That is, the two pipe ends are moved towards one another in the axial direction and pressed against one another. In order to be able to keep these two pipe ends at a safe distance at all times, these pipe ends are guided in the axial direction by means of small chain lifts 10 or the like, so that the pipe ends can be slowly moved towards each other or pulled apart with complete ease and accuracy.

As soon as the pipes are connected, the box is pumped full again, the water required for this possibly being fetched from the two pontoons 8 again. When the inner water level is the same as the outer water level, the seals are removed and the entire floating unit can now be moved further over the pipe to the next pipe connection, where the game is repeated.

The almost straight line alignment of the two pipe ends or pipes is ensured from anchored barges 11 by means of holding ropes 12, as FIG. 4 illustrates.

In addition, it is a great advantage of this water installation that the Pipes float in the water or become almost weightless due to the buoyancy are. They can be easily rotated and moved in the water. The water carries with it unmatched uniformity and allows any desired change in position without great forces would be required. The fitting merging of the flanges prepares z. B. no difficulties in the water, no matter how long the pipes and no matter how big the masses are.

Of course, the floating box 1 can also be made of steel, possibly with hollow walls according to the rules of shipbuilding, so that these walls can be flooded immediately and the box finds its stable floating position in itself.

The later sinking of a pipeline assembled in this way in the water usually no longer causes problems. It usually takes place immediately Od from this floating position using small inflatable boats. Like. That are equipped with winches.

Claims (2)

PATENT CLAIMS: 1. Method of assembling pipes in the water to form a pipeline, e.g. B. to a culvert, characterized in that the individual pipes or pipeline parts to be connected are held as floating on the water or floating by supporting bodies, the pipe joint is enclosed by a floating box (1) whose arranged for the passage of the pipes in the walls Openings (6) are sealed against the pipe wall by seals (4), the floating tank is then pumped empty and the pipe connection is then carried out in the dry. 2. The method according to claim 1, characterized in that after the pipe connection, the floating box (1) is flooded, after the flooding, the seals are loosened and the floating box is moved in the axial direction of the pipes. 3. The method according to claim 1, characterized in that the water to be pumped from the Schwinunkasten is pumped into supporting body (8) which is expediently provided with transverse bulkheads and connected to the Schwinunkasten.