DE1704364A1 - Process for the production of connections for pipelines, preferably from plastic pipes by casting with plastic compounds - Google Patents

Description

Process for making connections for pipelines is preferred from plastic pipes by casting with plastic compounds.

The invention relates to a method for producing branches and connecting pieces in pipelines, preferably made of plastic pipes by potting with plastic masses. In particular, the method is suitable in production from the house connection and when connecting the individual pipes in the course of the Laying of supply lines for gas and water to be used.

Processes for laying plastic pipes in which pipe connections are known are known either butt-welded or, after prior calibration, pushed into one another and glued together with the appropriate adhesive. In the same or similar In this way, pipe branches are also made. For the connection of the individual Pipes are also used with each other, so-called sliding sleeves, in which the Sealing is done with the help of rubber rings.

When making pipe branches by welding, the implementation of the work done in the workshop, as the welding in the pipe trench, like the Experience has shown that the need to work in a predicament does not lead to reliable connections. The installation of the workshop in this way prepared fittings but results in 3 additional pipe connections with this necessary effort and highlights the advantage of the plastic pipes available in great lengths on; To ensure sufficiently high strength for welded branches Reinforcement by glass fiber fleece is required, which is another additional one Effort arises. The pipe connection night by gluing. previous calibration of the pipes necessary, which are also in the workshop with special Vorrichzungen done nut. The gluing itself requires meticulous cleanliness and thorough Preparation of the adhesive surfaces if tight connections are to be achieved. The work is therefore very dependent on the weather and time-consuming. The application of sliding sleeves iür Eliminates pipe connections though mainly the last-mentioned deficiencies in part, but caused by gas-carrying lines Use of rubber rings that are sufficiently resistant to this medium.

The purpose of the invention is to eliminate or reduce these deficiencies, around with the increasingly applied use of plastic pipes for supply lines to make full use of the advantages of these materials and a high level of labor productivity to be reached during the laying work.

The invention is based on the task of the cumbersome preparatory work for the production of pipe branches and pipe connections and a Find a method to do all the work necessary for the laying of lines to be able to carry out directly on the construction site; The end result must be the Increasing labor productivity and reducing costs can be achieved.

According to the invention, the object was achieved in that both pipe branches as well as pipe connections can be made by casting with plastic compounds. For this purpose, pipe branches or pipe connections are made around the appropriately cut and roughly cleaned pipe ends one depending on Requirement split form placed, the case by case with a likewise corresponding is equipped with a collapsible core. This is the shape used for potting Mass, preferably polyester casthars with the appropriate filler used, poured. After solidification and hardening, the mold is removed, where the connection would be complete.

The technical and technical-economic effects of the method, which the invention is based on, consist in the following effects: Elimination of the workshop preparation.

Full utilization of the advantages of large pipe lengths.

Greater independence from the effects of weather during laying work.

Saving of transports between the construction site and the workshop.

Loss of welder qualification for those involved in the laying Manpower.

Saving of working time.

Increase in performance.

Lowering costs.

The invention is illustrated below using an example for production a house connection of dimension 63 / 3.5 to a main line 110 / 3.0 explained will.

The accompanying drawings show: FIG. 1 Half cut each and view of the mold placed and poured around the tubes (vertical section through the axis of the main pipe).

FIG. 2 section transverse to the main pipe in the direction of the axis of the connecting pipe.

Figure 3 view and section horizontally in the axis of the connection pipe.

The different hatchings used are clearly recognizable the main pipe 1, the connecting pipe 2, made of sheet steel according to the pipe axis double split mold 3, the split core 4 consisting of 9 parts, which is in This shape is designed because of the possibility of easy removal after casting and the casting compound 5.

The execution of the form depends naturally on the type and dimension the connection to be made.

Claims (1)

Claim method for producing connections for pipelines preferably made of plastic pipes, by casting with plastic compounds, characterized in 1 that the connection of the roughly prepared pipes by pouring the between the Pipes and a casting mold with plastic masses placed around them, if necessary with the additional use of an appropriate Xernes