SU1337604A1 - Connection of pipeline branch of symmetrical t-piece type - Google Patents

Abstract

The invention relates to the field of valves for pipelines for various purposes. The aim of the invention is to reduce the levels of gaum and vibration and the coefficient of hydraulic resistance by eliminating vortex formation. The connection of a branch pipe of the type of a symmetrical tee contains the same inlet and two outlet sections and curved axial lines. At the same time, the axial lines are bent along the inner and outer radii of 0.9-1.1 and 1.3-1.5 of the diameter of the inlet section, respectively, and matching in sections that are separated from the outlet sections of the axial lines by x, constituting 0.68-0.78 dia. pos. Lednii, 1 Il.s with,

Description

The invention relates to valves for pipelines of various purposes, used in such industries as shipbuilding, construction, transport engineering, oil and gas industry, etc.

The aim of the invention is to reduce noise and vibration levels and a hydraulic drag coefficient by eliminating eddy formation.

The drawing schematically shows the connection of a branch pipe of the type of a symmetrical tee.

The connection of a branch pipe of the type of a symmetrical tee with the same input I and two output sections 2 and 3 has curved axial lines 4 and 5 connecting the input 1 and output sections 2 and 3, respectively. Axial lines 4 and

6Н1) T

and

5 are curved at the inner R outer radius intersecting in cross sections 6 and 7 displaced to output cross sections 2 and 3 and spaced from the latter along the axial line 4 and 5 at distances of 0.68 -0.78 diameters of the output sections 2 and 3, respectively, and the ratio of the internal RgHur. i the outer RgHem radii to the diameter of the inlet section 1 are 0.9-1.1 and 1.3-1.5, respectively.

The movement of fluid in the connection of a branch pipe of the type of a symmetrical tee is as follows. When fluid flows through the inlet section 1, the flow is symmetrically divided and flows out through

Editor Y. Sereda

Compiled by And, Pashchenko

Tehred M. Didyk Proofreader M, Sharrshi

Order 4112/33 Circulation 811 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5

Production and printing company, Uzhgorod, st. Project, 4

output sections 2 and 3. The proposed connection design provides a greater degree of deformation, in connection with which the fluid flowing through the inlet section 1, by inertia, first tends to the pipeline walls opposite the branch, and when passing sections 6 and 7 of the interface moves away from them, going to the pipeline walls adjacent to the branch. Thereby, the velocity field is leveled and the occurrence of a rarefaction zone with a reverse swirling flow, i.e. vortex formation in the flow part of the branch connection of a symmetrical tee-type pipeline is eliminated.

The proposed compound can be made by casting.

Claims (1)

Invention Formula Attaching a branch pipe of the type of a symmetrical tee with the same input and diameter output sections and curved axial lines, characterized in that, in order to reduce noise and vibration levels and hydraulic resistance coefficient by eliminating vortex formation, the axial lines are bent along the inner and outer radii 0.9-1.1 and 1.3-1.5 diameters of the input section, respectively, and matching in sections that are separated from the output sections along the axial lines at a distance of x, constituting 0.68-0.78 of the diameter of the latter.