SU1566160A1 - Flanged joint for pipe-lines - Google Patents

Abstract

The invention can be used in the chemical industry to connect pipelines that require disassembly without the presence of personnel. The purpose of the invention is to increase the reliability and reduce the size of the flange joint. Flanges 3,4 c chickpeas among themselves. The flange 3 is installed at the ends of the connected pipes 1.2 with the possibility of axial movement and overlaps the junction formed by them. The flange 3 and the ends of the pipes 1, 2 are made with conical shoulders 7, 8, which are in contact with the conical shoulders of the sleeve 9. The sleeve 9 is made of a composite of sectors wrapped around a removable ring 10. Along the edges of the sectors, grooves are placed on the outer surface in which elastic rings are placed 12.13 with different stiffness, spanning simultaneously all sectors. The disassembly in an automatic mode is carried out with the help of at least two stops 15, lying in the center plane and reciprocating. 1 hp f-ly, 3 ill.

Description

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The invention relates to mechanical engineering and can be used in chemical flushing to connect pipelines that require disassembly for safety purposes without the presence of maintenance personnel.

The purpose of the invention is improved reliability and reduced size.

FIG. 1 shows a flange connection, a longitudinal section; FIG. 2 the same, disassembled; in fig. 3 is a section A-A in FIG. 1 (end view on a sleeve consisting of sectors fastened with rubber rings at the ends).

The flange connection of pipelines 1 and 2 consists of two flanges 3 and 4, interconnected by means of studs 5 and nuts 6. Flange 3 is installed on pipelines 1 and 2 with the possibility of axial movement, overlaps the valve and has a conical shoulder 7. Similar conical shoulder 8 is made on the pipeline 1

The conical collars 7 and 8 are covered by the sleeve 9. Consisting of sectors fastened with a removable ring 10 and having conical collars on the inner surface, interacting with conical collars 7 and 8 when they are diluted with studs 5 and nuts 6

This interaction consists in sliding the sleeves 9 from the shoulders 7 and 8 in the radial direction of the stop into the removable ring K), forming a locking, clearly disassembled connection with the latter and ensuring that the flange 3 is immovable, which makes it possible to seal the junction of the pipelines 1 and 2 by compressing the gasket 1 1 therein while mixing flanges 3 and 4.

At the ends of the sectors of the sleeve 9, rubber rings 12 and 13 are installed in the grooves, having ra (personal stiffness and simultaneously covering all sectors.

Ring 12 is made of softer rubber and is smaller in cross section than ring 13 fixed in the groove with pins 14, so after removing ring 10 when diluting conical burgas 7 and 8, ring 12 is stretched to such an extent that the sleeves 9 slide off the burg 8 (the intermediate positions of the sectors of the sleeves 9 are shown in Fig. 2 with thin lines).

The angles are made the greater, the greater the coefficient of friction between the conical surfaces of the shoulders 7 and 8 and the sleeves 9 (for steel thickness A. 30J).

The disassembly of the flange connection in the automatic mode is carried out from 0 to

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five

0

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at least two stops 15, lying in the diametral plane of the flange joint and reciprocating.

To reduce the removal force of the ring 10, the latter has a conical fit on the sleeve 9 with an angle of inclination p (pd2 °).

The flange joint is assembled as follows.

Mounted coaxially with the contact through the gasket 11 of the pipe 1 and 2, as shown in FIG. 2, the flange 3 with the sleeve 9 (without the ring 12) slides toward the junction of the pipes up to the stop of the conical shoulders 7 and 8, while the sectors of the sleeve 9 on the side of the ring 12 open and fit on the conical shoulders 7 and 8, after which the ring 12 is installed and the ring 10 slides over the sleeve 9, and then the flanges are fastened by rotating the nuts 6. The conical flanges 7 and 8 unclench the sectors of the sleeve 9 up to the stop in the removable ring 10, fixing it against displacement, and the ends of the pipes 1 and 2 clamp the gasket II. Flange connection assembled.

When disassembling to pipeline 2 (or 1), a portable hydraulic cylinder is installed with two stops 15 on the rod. Moving the stem forward, the removable ring 10 is moved, and the stem moving backward moves the flange 3, while the sector sleeve 9 opens on the mounting side of the ring 12 and slips off the conical collar 8.

After disassembling the two flanges on the pipe, the latter can easily be removed in the direction perpendicular to the axis of the pipeline

Claims (2)

1. A flange connection of pipelines containing two flanges with fastening threaded parts, a sleeve and a removable ring, characterized in that, in order to increase reliability and reduce the size, one of the flanges is installed at the ends of the connected pipes with the possibility of axial movement and overlaps The joint, in this case, on the flange and at the ends of the pipes to be joined, there are conical collars in contact with the conical collars of the sleeve, which are made up of sectors covered by a removable ring. 2. The connection according to claim 1, characterized in that it is provided with elastic rings with different stiffness, and along the edges of the sectors on the outer surface there are grooves in which said rings are placed with the possibility of simultaneously covering all sectors. shh / / / / ft LHHUCHUCH Figg FIG. 3