RU33634U1 - Reinforced plastic pipe joint - Google Patents

Description

Knot and method for connecting reinforced plastic pipes

The invention relates to the field of construction of pipelines made of plastic, in particular polyethylene pipes.

Known is the junction of fiberglass reinforced pipes with a polyethylene lining, containing thickenings made at the ends of butt welded lays (polyethylene pipes), and a segment coupling with a lock 1 tightening these thickenings.

A method of connecting reinforced fiberglass pipes with a polyethylene lining, includes the preparation of thickenings at the ends of the joined pipes, butt welding of the polyethylene lining (pipe), and installation of a segmented sleeve with a lock 1 on the thickenings.

The connection node made by a known method provides a reliable connection, but not technologically advanced for connecting thermoplastic, in particular polyethylene pipes, reinforced with high-strength fibers.

The technical challenge facing the invention is to ensure the manufacturability of the connection of plastic reinforced pipes.

The technical problem is solved by the fact that in the connection node of reinforced plastic pipes containing butt welded ends

thickening pipes, and a segmented coupling with a lock tightening them, thickening

M.Kl.7V29S 65/18

 ;

thickenings, weld pipes end-to-end, and install on the thickenings a segmented coupling with a lock that tightens them, and thickenings are performed by installing threaded bushings at the ends of the pipes.

This allows you to further dismantle the connection, cutting pipes at the joint after the separation of the bushings (screwing on the pipe).

The invention is illustrated by drawings, where in FIG. 1 shows the connection unit of plastic reinforced pipes.

The connection unit of the reinforced plastic pipes 1 and 2 contains thickenings installed at the ends of these pipes — metal bushings 5 and 6 mounted on the threads 3 and 4 and their segment coupling 7 tightening them with the lock 8.

To connect reinforced polyethylene pipes 1 and 2, metal sleeves 5 and 6 are installed at their ends on threads 3 and 4. In this case, the connected ends of the pipes should protrude beyond the end of the sleeve by an amount that ensures welding of pipes on devices designed for butt welding.

In the process of welding, the pipes are pressed against each other by the ends, while the bushings converge closely and form a pocket limited by annular grooves 9 and 10, made previously on the butt ends of the bushings. The pocket is filled with formed grata. Welding ends by cooling the weld joint to a controlled temperature.

On the joined bushings (thickenings) 5 and 6, a segment coupling 7 and its locking lock are installed, made in the form of rings (or bushings) put on the coupling 8. This completes the process of connecting the pipes.

To align the sleeves during welding, a centering ring 11 can be pre-installed in one of the annular grooves.

The advantage of the proposed connection is that if it is necessary to disconnect the pipes, for example, when repairing or disassembling the pipeline, the lock is removed, the bushings are pulled apart, screwing them further onto the pipes,

and cutting along the joint. Pipes and connectors can be reused.

Sourse of information:

1 Products of ZAO Composite-Neft, http // www.kompozit.ru / ras / products.

Claim.

1. The connection node of reinforced plastic pipes, containing installed on the ends of butt-welded thickening pipes, and tightening their segmented sleeve coupling with a lock, characterized in that the thickening is made in the form of bushings mounted on the thread.

2. A method of connecting reinforced plastic pipes, including making at the ends of the pipes to be joined thickenings, butt welding, and installing on the thickenings of a segmented coupling with a lock, characterized in that the thickenings are performed by installing bushings on the ends of the pipes.

DM / YG 3 REINFORCED PLASTIC PIPES

ASSEMBLY AND METHOD OF CONNECTION

Claims (1)

The connection node of reinforced plastic pipes, containing installed at the ends of butt-welded pipes of thickening and pulling them segmented sleeve with a lock, characterized in that the thickening is made in the form of bushings mounted on the thread.