SU863952A2 - Device for connecting pipelines - Google Patents

Description

(54) DEVICE FOR CONNECTING PIPELINES

one

The invention relates to various industries for detachably connecting pipelines that are in the working position under excessive internal pressure.

Basically auth. St. No. 5,57226 describes a device for connecting pipelines consisting of two semi-connectors interconnecting with fittings, nozzles and valves fixed to them, blocking the openings for the passage of the medium, the bellows being installed between the fittings and nozzles, and the valves are fixedly connected: one is with a branch pipe, the other - with fitting 1.

The disadvantage of such a device is that it will work one way, i.e. Only 3 when the pipeline is supplied with a working medium under excessive pressure from the side of the branch pipe, which is fixedly connected to one of the valves. When supplying the working medium under excess pressure through the pipeline from the side of the other pipe, inside of which is placed a throttling diaphragm hole, the opening of which blocks the other valve that is movable relative to this pipe, the device will not work at all.

The aim of the invention is to provide the possibility of automatic connection and disconnection of pipelines regardless of the direction of flow of the medium.

This is achieved by the fact that in the semi-plug containing the valve, fixedly connected to the fitting, an additional bellows is installed between the branch pipe and the end of the pipeline.

FIG. 1 shows a device for connecting pipelines in the non-operating position; in fig. 2 - the same, in the working position when the working medium is supplied under pressure from the side of the branch pipe, which is fixedly connected to one of the valves; in fig. 3 - the same, in the working position, when the working medium is supplied under excessive pressure from the side of the nozzle with a throttling diaphragm, inside which another valve freely moves.

Claims (2)

A device for connecting pipelines contains fittings 1 and 2 interconnected, the first of which has a throttling diaphragm 3 and is provided with bellows 4 connected to one end of pipe 5, the second end of which is welded to pipe 6 / Pipe 2 through bellows 7 is connected to pipe 8 Inside which is placed a throttling diaphragm 9. The throttling openings of the diaphragms 3 and 9 are blocked by valves 10 and 11. The stiffness of the bellows 7 must be greater than the rigidity of the bellows 4. The valve 10 is rigidly connected to the nozzle 2, and the valve 11 is connected to the nozzle 5. Patrubo 8 is connected to pipeline 12 by means of an additional bellows 13. Pipe 14 has a stop 14 for interacting with pipe 8, and pipe no 5 has a stop 15 for interacting with fitting 1. The stops 14 and 15 can act as protective covers for the respective bellows 13 and 4. Between the butt ends of fittings 1 and 2 there is a gasket 16. At the ends of both fittings there are centering chamfers. With a low stiffness of the bellows 4, 7 and 13, the fittings 1, 2 and the socket 8 can be in special guides, on supports, etc. Sealing surfaces of fittings 1 and 2 and types of seals may be different. The device works as follows. To connect fittings 1 and 2, it is sufficient to set them against each other. At the same time between the ends of fittings 1 and 2 may be a gap. When supplying the pipeline 6 with the working medium under overpressure due to the diaphragm 3, which resists the movement of the medium, the fitting 1 will move towards the fitting 2 and through the gasket 16 it is sealed with it. Further, under the action of the working medium, the fittings 1 and 2 move together and through the bellows 7, due to some stiffness, act on the nozzle 8, pressing it to the stop 14 of the pipeline 12. With further joint movement of the fittings 1 and 2 under the action of the working medium, the valve 10, because it is rigid is connected with the fitting 2, moves away from the edge of the throttling opening of the diaphragm 9 by an amount equal to the movement of the fitting 2. With the further movement of the fittings, the drawing board 11 leaves the opening of the diaphragm 3 of FIG. 2), with the result that the pipes 6 and 12 are connected, which allows the working medium to be continuously supplied from the first to the second. Upon the termination of the supply of the working medium through the pipeline 6, the pressure drops, and the fittings 1 and 2 are returned to their original position due to the elasticity of the bellows 4, 7, and they are automatically disconnected. At the same time, valves 10 and 11 block the openings of the diaphragm 9 l 3 even before fittings 1 and 2 are disconnected, which will prevent the working medium from entering the pipelines into the surrounding space. When supplying the working medium under overpressure through the pipeline 12, due to the diaphragm 9 of the nozzle 8, the throttling hole of which is blocked by the valve 10 that resists the movement of the medium, the nozzle 8 together with the bellows 7 and the nozzle 2 moves towards the nozzle 1, pulling the bellows 13. Fittings 1 and 2 are joined and sealed through the gasket 16. Since the stiffness of the bellows 7 is greater than the stiffness of the bellows 4, then further under the action of the working medium, the nozzle 8, the bellows 7, the fitting 2 with the valve 10 and the fitting 1 move in the direction of the pipeline 6 together, squeezing the bellows 4. At the same time, the valve 11 comes out of the opening throttling diaphragm 3. With further joint movement of the fittings 1 and 2, the fitting 1 abuts against the stop 15, the a-pipe 8 under the action of the working medium moves, squeezing the bellows 7 towards the fitting 2. At the same time, the valve 10 moves away from the edge of the aperture 9 by an amount equal to go nozzle 8 about in relative nozzle 2. As a result, pipes 12 and 6 are in communication, and the operating medium is continuously supplied from one conduit to another. After the supply of the working medium is stopped, the pressure in the pipeline 12 drops, fittings 1, 2 and pipe 8 due to the elasticity of the bellows 4, 7 and 13 return to their original position, automatic uncoupling of fittings 1 and 2. At the same time, the valves 10 and 11 block the openings of the corresponding diaphragms 9 and 13 even before the fittings 1 and 2 are uncoupled, which will prevent the working medium from entering the pipelines into the surrounding space. Technical and economic efficiency lies in the implementation of automatic docking and disconnection of pipelines, regardless of the direction of flow of the medium and thereby expanding the functionality of the device. The invention The device for connecting pipelines by author. St. I 557226, characterized in that, in order to enable automatic connection and disconnection of pipelines regardless of the medium flow direction, an additional bellows is installed in the semi-connector containing the valve fixedly connected to the nozzle, between the nozzle and the end of the pipeline. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 557226, cl. F 16 L 37/28, 1975. I JB 1 1 H 15 XXX // /