RU2534658C1 - Pipeline connection - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: connection for pipelines comprises two connector members with channels, seals and guides for the placement of rods with valves which are coupled to each other by a coupling nut. Threaded bushings are additionally installed in the connector members, the rods are pivotally coupled by one end with the valves and by the other end - with the threaded bushings.

EFFECT: invention allows for design simplification and increase of connection reliability.

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Description

The invention relates to mechanical engineering, in particular to devices for connecting pipelines, and can be used in pneumohydraulic systems of space rockets.

Known pipe connections (USSR author's certificate No. 423975, F16L 37/00, RF patent No. 2094689 F16L, 37/28, RF patent No. 2433330, F16L 37/40). The disadvantages of these devices are:

1) a large strait of the working environment when undocking parts of devices;

2) design complexity;

3) low reliability of sealing.

And it is also known "Quick disconnect connection of high pressure pipelines" (RF patent No. 2129684, F16L 37/00), including two coupling halves connected by a spring-loaded locking sleeve with a locking element made in the form of a union nut. Through the outer surfaces of both half-couplings in the diametrical plane along the circumference there are made through windows of arbitrary shape, which are combined when connecting the half-couplings and blocked by spring-loaded pistons in the open state, while the piston of one of the half-couplings is made in the form of a hollow cup spring-loaded from the inside, which can be moved inside this coupling and installed with the possibility of interaction with the end face of the other half coupling, and the piston of the other half coupling is made in the form of a spring-loaded hollow sleeve covering the outer surface coupling half, wherein both pistons are provided with limiters axial movement as mechanical stops.

Significant disadvantages of this compound are:

1) the formation during the docking of a large volume of "air bubble" between the locking elements falling into the system;

2) the need for a big move to dock and undock, which leads to an increase in the dimensions and mass of the device;

3) low reliability of sealing compounds.

The closest in technical essence (prototype) is the "Device for connecting pipelines" (USSR author's certificate No. 771405 F16L 37/28), containing two enclosures connected with a union nut, inside of which guides are made for accommodating shut-off valves with rods interacting with pushers made in the form of valves installed in mating housings and in contact with valve stems.

The disadvantages of this device are:

1) design complexity;

2) the complexity of maintenance during operation;

3) large dimensions and mass;

4) low reliability of sealing.

These shortcomings in the proposed connection of pipelines are eliminated by the fact that in the half-connectors additionally installed rods and threaded bushings, the rods at one end pivotally connected to the valves, and the other end to threaded bushings.

Thus, the proposed connection of pipelines:

1) allows you to create a connection of pipelines, structurally simpler, with minimum dimensions and minimum weight;

2) increases the convenience of service when connecting and undocking the connection;

3) can significantly reduce the spill of the working environment when undocking the half-connectors;

4) improves the reliability of sealing compounds.

In Fig.1 shows a device for connecting pipelines in the docked position, Fig.2 - in the intermediate, with the valves closed before undocking, Fig.3 - in the undocked position.

The piping connection consists of the left and right half connectors, the fixing of which is carried out with a union nut 1. Each half connector consists of bodies 2 and 3, the end surfaces of which are valve seats 4 and 5. Guide bodies 6 and 7 are screwed into bodies 2 and 3. 7 threaded sleeves 8 and 9 are screwed, connected to the rods 10 and 11 of valves 4 and 5, providing opening of channels for the flow of the working medium from the cavity of one half-connector into the cavity of another half-connector or overlapping of these channels.

The device operates as follows. When docking, the half-connectors are combined with each other and fixed with a union nut 1. After this, by unscrewing the threaded bushings 8 and 9, the valves 4 and 5 through the rods 10 and 11 are moved all the way into the guides 6 and 7, while opening the channels for free flow of the working medium from the cavity one half connector into the cavity of another.

Before undocking the connector by screwing the bushings 8 and 9, the valves 4 and 5 through the rods 10 and 11 are moved until they fit on the saddles of the housings 2 and 3 of the half-connectors, while blocking the channels for the flow of the working medium. After that, the union nut 1 is unscrewed and the connector half-connectors are disconnected.

The proposed connection of pipelines allows you to create a device that is simpler and more reliable in operation, to reduce the mass of pneumohydraulic systems of space rockets.

The proposed pipeline connection is at the preliminary design stage.

Claims (1)

A pipeline connection containing two half-connectors with channels, seals of these channels and guides installed in the half-connector housings for holding the rods with valves, interconnected with a union nut, characterized in that threaded bushings are additionally installed in the half-connectors, the rods being pivotally connected to the valves at one end, and the other end with threaded bushings.

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