SU1516707A1 - Pipeline connection - Google Patents

Abstract

The connection of pipelines relates to mechanical engineering, namely to detachable connections of pipelines, and can be used when working with high pressures of a flowing fluid. The purpose of the invention is to improve the tightness due to the compensation of angular, linear and radial deviations of the mutual arrangement of the joined elements. The joint contains movable 2 and fixed 3 flanges connected with bolts 1 with a sealing sleeve 4, a pressure flange 5 and sealing gaskets 6, 7 located between them. On the one side of the sealing sleeve 4 there is a spherical surface 8 in contact with the counter surface of the spherical shell of the pipeline 10, covered by a movable flange 2 through an eccentric ring 12 of variable cross section, and on the other hand, a pressure flange 5 placed in a fixed flange 3 and connected to the latter with bellows 13 by welding. For pressing the pressure flange 5 to the sealing sleeve 4, bolts 20 interacting with the pressure flange 5 are installed in the fixed flange. 2 Cp f-ly, 1 ill.

Description

SP

The invention relates to mechanical engineering, namely to detachable connections of pipelines, and can be used when working with high pressures of a flowing fluid.

The purpose of the invention is to improve the tightness by compensating for angular, linear and radial deviations of the relative position of the abutting elements.

The drawing shows the connection section.

Bolts 1 movable 2 and non-movable 3 flanges 3 are interconnected. A sealing sleeve 4 and a pressure flange 5 are installed between them. The sealing sleeve 4 is equipped with sealing gaskets 6 and 7 and its spherical surface 8 is on one side aligned with a response the surface 9 of the spherical shell of the pipeline 10 of internal diameter D, and the finger 11 on the other side are pressed by the pressure flange 5. The movable flange 2 interacts through an eccentric ring 12 of variable cross section with the outer surface of the spherical shell of the pipe rovoda 10. The pressure flange 5 is situated in a fixed flange 3 and is connected thereto by means of bellows 13 by welding. In the general case, the joints 14 and 15 of the pipelines 10 and 16, when assembled, are arranged with an eccentricity ef between us 17 and 18.

The eccentric ring 12 of variable cross section is made with an eccentricity ej between the axes 17 of its inner spherical surface 19 and the outer cylindrical surface. The axis 19 is at the same time the axis of the groove diameter D, in the movable flange 2. The centering surface T with diameter D has an axis 18, which is located with eccentricity e relative to axis 19, equal to eccentricity eJ. The movable flange 2 is centered with the fixed flange 3 on the surface T. The necessary force to press the sealing sleeve 6 with the spherical shell of the pipeline 10 to the pressure flange 5 is achieved by screwing the bolts 20 into the threaded holes of the fixed flange 3. The sealing gaskets 6 and 7 can be made of aluminum alloy or another soft metal.

The principle of operation of the device is as follows.

Before mounting the pipes 10 and 16 and connecting them together, the spherical casing is welded to the pipeline 10. The movable flange 2 and the eccentric ring 12 of variable cross section are pre-worn from the outer surface of the spherical casing. Seal 14 is inserted into the joint 14 up to the stop into the surface 8 and pressed by the pressure flange 5 placed in the fixed flange 3.

By rotating the eccentric ring 12 of variable cross section relative to the spherical shell, and the movable flange 2 relative to the eccentric ring 12 of variable cross section, precise alignment of the fixed flange 3 with the pipe 19, i.e. the eccentricity e is changed, from O to e, 2e (since it is advisable to choose equal to e). Bolts 1 are inserted into the holes of both flanges in advance, so they are rotated simultaneously. After an exact match between the fixed flange 3 and the pipe 16, they are welded at the joint. Under the action of the internal pressure of the fluid flowing through the pipelines, the pressure flange 5 moves, as well as under the action of the elastic force of the bellows 13, until it stops at the end 11 of the sealing sleeve A, which self-aligns between the surface 8 of the spherical shell and the pressure flange 5. Depending on the pressure in the pipelines produces an additional compression of the sleeve 4 from the side of the pressure flange with bolts 20.

Claims (2)

1. Connection of pipelines containing pipelines with movable and fixed flanges, sealing gaskets between them, fastened with fasteners, an installation sleeve, which cooperates at one end with a stationary flange, and the other through a pipe, an eccentric ring of variable cross section, with a movable flange, characterized in that , in order to increase tightness, the joint is provided with a spherical shell, with an outer 515167076 and the internal spherical surface eccentric ring of an alternating network, a bellows and a pressure flange, is made with an internal surface spherical placed in a fixed flange that contacts a spherical shell connected to it through a bellow surface with an external spherical surface. and an eccentricity between the shell is fixed at the end of the other, the outer and inner surfaces. pipeline, and sealing sleeve-3. The connection of pipelines is made at one end with a sphere-item 1, characterized by the fact that the surface is in contact with Q, in order to provide a force under the inner spherical surface of the sealing sleeve, and, on the other hand, on the other side of the pressure flange, in a fixed position, pressed by the pressure flange. The threaded holes are made in the tongue 2. Connection of pipelines by bolts, interacting with an NP .1, characterized in that it is with clamping flanges.