FI69918B - ROERFOG FOER BETONGROER - Google Patents

Description

CONCRETE PIPE EN PIPE JOINT 6991 8

The invention relates to a pipe connection for concrete pipes, in which the concrete pipes are connected together as a pipeline.

5

In the currently used methods of connecting concrete pipes, the most common method is to connect the pipes to each other by joining the cylindrical element to the conical end (so-called sleeve-10 tos) by gluing, while sealing the combination with a rubber ring seal.

The most common drawback in these pipe joints has been that the joint does not withstand tension at all and bending only to a limited extent. The joint is tight if the angular changes remain small, but even frost damage, for example, can cause angular changes that lead to the joint seal slipping out or the pipe to break. The joints have to be made under site conditions, which causes a dispersion of the quality of the work.

20

The pipe connection according to the invention provides a connection which has the possibility of avoiding the disadvantages of known plant solutions. This is accomplished by making a flexible seam or seams around the pipe at a distance 25 from the end of the pipe in connection with the manufacture of the concrete pipe by means of a movement seam technique known from construction technology or the like.

The advantages of the pipe joint according to the invention are, inter alia, that the joint is resistant to tension, bending and is also tight. The starting point for the new pipe connection is that two types of separate connections are made to the pipe line: flexible and completely rigid connections. The flexible part is already made in the pipe at the factory and this can be done with the help of the so-called movement joint technique, in which case basically the same technique is used as is usually used in the construction of construction joints. The part of the site that remains is to make rigid joints, which can be carried out by any conventional technique such as a flange joint, a loose sleeve joint, etc.

5 Installation on site is fast and uncertainties due to angular changes are not a problem. The use of pipe elements facilitates installation work on site and the number of joints to be made during installation is reduced per unit length of pipe compared to the current joint-10 end.

In the following, the pipe connection according to the connection solution according to the invention will be determined on the basis of the pipe connection combination shown in the figure.

15

Figure 1 shows a pre-assembled pipe connection structure.

Figure 2 shows a cross-section of 20 pipe construction alternatives.

Figure 1 shows a pipe connection with flexible connection points 2 and rigid connections 1. The rigid connection point can be made at the installation stage, e.g. from a flange connection, and the flexible connection can already be made at the manufacturing stage, e.g. by movement joint technique or the like.

In Fig. 2, the flexible joint (4) consists of a tight concrete-30 joint (4) made by movement jointing technology in connection with concrete casting, so that angular changes are possible and at the same time allows torsional stress and longitudinal tensile stress and the joint is tight during installation. torque, at least longitudinal traction and pressure, and is e.g. a lockable hinge connection (5) or a rigid flange connection (6).

3,69918

The flange connection 6 shown in Fig. 2 is only intended to serve as a illustrative example of a solution alternative to the connection system according to the invention. However, the flange connection combination according to the invention can vary greatly within the scope of claim 5.

Claims (1)

6991 8 CLAIMS Pipe joint of concrete pipes, in which the flexible joints required in the pipeline receive longitudinal and angular changes and torsional stress, characterized in that in connection with the manufacture of a concrete pipe or seam-10 and.