SU839942A1 - Swivel portion of loose material conveying pipeline - Google Patents

Description

one

The invention relates to pressure hydrotransport and can be used for unaccented rotation of the slurry stream during its transportation through pipelines.

A rotatable pipeline section for transporting bulk materials is known, comprising an inlet jib, an outlet nozzle mounted at an angle to it and an opposite inlet nozzle that is closed at one end and equipped with an energy absorbing insert nozzle with a diameter larger than the inlet nozzle 1.

However, the knee is ineffective when transporting a hydroabrasive medium, since during the movement of the slurry under high pressure and high speed, it is subjected to intense wear. In this case, both the nozzle with an enlarged diameter and the closed end, and the diametrically opposed part (i.e. the part of the main pipeline) are broken, because the incompressible medium returning from the nozzle directly collides with the latter.

The purpose of the invention is to increase the service life of the rotary portion.

The goal is achieved by the fact that the energy absorbing insert is made of an elastic material, and a wear-resistant elastic sleeve is installed in the outlet pipe.

The drawing shows a rotary section of the pipeline, the cut.

Horizontally located inlet pipe 1 of the pipeline through a transient conical pipe 2 is connected to the pipe 3

a cylindrical shape having a diameter greater than the diameter of the inlet nozzle, to which the outlet nozzle 4 is rigidly attached, the continuation of which is the nozzle 5. Inside

rigidly fixed nozzle 4 wear-resistant elastic sleeve 6 made of phylotexton, made removable. The pipe 3 is supplied with energy absorption insert 7 of the elastic

material - cork mass, retained by the ring 8. The pipe 3 at one end is closed by a cover 9, which is connected to it by a flange 10. The pipe 4 is connected to the pipe 5 by a flange

11. Gaskets 12 are provided for sealing in flange connections.

The device works as follows.

The slurry is transported through a trunk pipeline (not shown). After passing the inlet nozzle 1, in which it moves at the same speed and consistency as in the main line, the speed of movement in the transitional conical nozzle 2 and in the nozzle 3 is sharply reduced. With this reduced speed, the slurry stream is fed (collides) to the energy absorbing insert 7, is reflected from it and enters the pipe 5 through the sleeve 6 located in pipe 4. In pipe 5, the same speed and consistency is restored, and the stream of liquid that changes the direction of movement is transported on the main pipeline (not shown

The use of a transitional conical nozzle 2 and nozzle 3, the diameter of which is larger than the diameter of the inlet nozzle, contributes to a significant decrease in speed and, thus, a reduction in hydroabrasive wear (wear intensity varies in direct proportion to the speed) in these parts.

The presence of the liner 7 significantly reduces the impact of the flow of the slurry in the pipe 3 on the cover 9 and completely prevents wear.

The choice of the cork mass for the manufacture of the liner 7 is due to the fact that this material is the cheapest, does not suffer from corrosive and hydroabrasive wear, is neutral and has good damping properties.

The presence of the sleeve b from the wear-resistant material with the ability to absorb shock and vibration energy eliminates the possibility of rapid wear of the vertical pipe 4, with the internal surface of which the slurry stream reflected from the contribution 7 collides.

In the event of failure (wear) of the sleeve and the insert 7, replacing them with new ones is not a problem.

The design of the proposed turning section of the pipeline allows changing the flow direction of the slurry to any angle from 0 to 120 without changing its working conditions, significantly increasing the service life of the turning sections and completely preventing their increased wear.

Claims (1)

1. USSR author's certificate No. 243489, cl. B 65 G 53/56, 1969, ts e