Pipe

FIELD: manufacture of pipes.

SUBSTANCE: pipe contains longitudinal load-bearing layers made from composite fibrous material in form of bell-mouths in beads; bell-mouths are made along surface embraced by hyperboloid of revolution of one nappe.

EFFECT: enhanced reliability of pipes.

2 cl, 2 dwg

 

The invention relates to the field of pipes.

Known pipe containing wall made of composite fibrous material, blending smoothly into the end of the flanging - Ogill “the Design of products made of composite fibrous materials”, Leningrad: Mashinostroenie, Leningrad branch, 1984, str, RES (1, 3).

This pipe has a low reliability, due to the work of the layers flanging on the failed circuit - bending.

Known another pipe containing a longitudinal force layers of composite fiber material in the form of a socket in the shoulder - RF patent №2143627, F 16 L 9/12.

This pipe by its characteristics and the achieved result closest to the proposed and adopted for the prototype.

The socket ends of this pipe are located in the shoulder along the diagonals of the cross sections of the latter.

Thanks to this performance is the reliability of the pipe is increased.

However, made in this tube a positive result is still insufficient, because when you reduce the width and increase the height of the shoulder position of the longitudinal force of the layers in the sockets actually approaches the position of the limit flanging pipe-analogue and its inherent failure circuit - bending.

The objective of the invention is to improve the reliability.

To solve this problem improved pipe containing a longitudinal force layers of whom is positionno-fibrous material in the form of a socket in the shoulder.

This improvement is that the sockets are made along the surface described by the one-sheet hyperboloid of rotation.

In the embodiment, the longitudinal force of the layers in the socket is made with a winding angle equal to the angle of the location direct, forming a one-sheet hyperboloid of rotation.

Belling along the surface described by the one-sheet hyperboloid of rotation, provides the location of the sockets along the surface, a longitudinal power layers which work best and the tensile and compressive stresses thus improving the reliability of the pipe during operation.

Running longitudinally of the power layers in the sockets with the winding angle equal to the angle of the location direct, forming a one-sheet hyperboloid of rotation, increases even more the work of the layers in tension and compression, and further increases the reliability of the pipe.

The invention is illustrated by drawings, which show:

figure 1 - trumpet;

figure 2 - α - the angle of winding layers in the sockets.

The tube has a longitudinally-power layers 1 composition-fibrous material in the form of sockets 2 flange 3.

The socket 2 is made along the surface 4, the described single-hyperboloid of rotation 5, starting, for example, from his throat circle 6 in Fig. 1 shows thin lines that provide the t improves sockets in tension and compression, and thereby improves the reliability of the pipe.

Layers 1 can be performed with the angle of winding αequal to the angle of the location direct, forming a one-sheet hyperboloid of rotation (which further increases the work of the longitudinal strength layer in tension and compression).

The pipe according to the invention (better socket for tension and compression) has improved reliability.

1. Pipe containing a longitudinal force layers of composite fiber material in the form of sockets in the flange, characterized in that the sockets are made along the surface covered by the one-sheet hyperboloid of rotation.

2. The pipe according to claim 1, characterized in that the longitudinal strength of the layers in the sockets carried out under the winding angle equal to the angle of the location direct, forming a one-sheet hyperboloid of rotation.



 

Same patents:

Pipe // 2249148

FIELD: manufacture of pipes.

SUBSTANCE: pipe contains longitudinal load-bearing layers made from composite fibrous material in form of bell-mouths in beads; bell-mouths are made along surface embraced by hyperboloid of revolution of one nappe.

EFFECT: enhanced reliability of pipes.

2 cl, 2 dwg

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