SU1726884A1 - Quick-disconnecting joint of pipelines - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in hydraulic systems for testing hydraulic equipment and pneumatic equipment with standard connections at high pressures under pressure cycling conditions. The aim of the invention is to increase the reliability of the connection at high pressures under cyclic pressure changes. The connection includes a housing in which a fitting and a nut are inserted, cut into several separate spring-loaded parts, interacting with a movable coupling having an internal conical surface. 4 il.

Description

The invention relates to mechanical engineering and can be used in the hydraulic systems of test benches for hydraulic equipment with standard connections under pressure cycling conditions.,

The aim of the invention is to increase the reliability of the compound at high pressure under the conditions of its cyclic change.

Figure 1 shows the quick disconnect connection of the pipelines in operating condition; figure 2 - section aa in figure 1: fig.Z - section bb in figure 1; figure 4 is a view In figure 1.

The connection includes a housing 1, inside of which a spring-loaded fitting 2 is installed with seals 3 and 4. On the outer cylindrical surface of the housing 1 in its left part there are three grooves in which the plate springs 5 and three separate leaves are inserted, which are cut by the nut 6 to its full length .

The petals have a sponge on the left side with a part of the thread corresponding to the thread of standard fittings, and a part of the conical surface. On the outer cylindrical surface of the housing 1 in its right part there is a concentric groove for seals 9.

Along the outer cylindrical surface of the housing 1 and the ring 10 with a seal 11, a sleeve 12 is moved, having an inner conical surface G and a bayonet groove. The movement of the coupling 12 is limited by a pin 13 with an internal thread to remove it from the housing 1. A fitting with a sealing washer 15 is wrapped in the housing 1.

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The test apparatus is connected to the bench hydraulic system as follows.

The clutch 12 is shifted to the right, rotated and secured by means of the pin 13. The left end of the fitting 2, which is out of working position, is inserted into the fitting 16, screwed into the apparatus under test (not shown) and, overcoming the resistance of the spring 17, the connection moves to the left up to the stop of the jaws of the nut in the hexagon of the fitting 16. The coupling 12 rotates in the opposite direction and under the action of the force of the spring 18 is shifted to the left. With its conical surface, the coupling 12 contacts the conical surfaces of the nut parts and causes the latter to engage with the fitting 16. A hydraulic apparatus is pre-connected to the hydraulic system of the test bench. When fed into the pipeline, the working fluid under pressure last through the holes D enters the cavity E and acting on the annular platform of the clutch 12, keeps it in the locked position.

Due to the difference in diameters of the left and right ends of fitting 2, it is pressed against the conical surface of fitting 16. To disconnect the apparatus under test with the hydraulic system of the stand, the supply of working fluid under pressure is stopped, the coupling 12 is rotated, retracted to the right and fixed, releasing the spring-loaded nut parts. The nozzle 2 is pushed away from the nozzle 16 and the test apparatus and the hydraulic system of the test apparatus are separated.

Forum and quick connection of pipelines containing a multi-petal chuck with internal jaws and a movable spring-loaded locking sleeve, characterized in that, in order to increase the reliability of the connection under high pressure under the conditions of cyclic change, the collet is made in the form of a nut, cut into several separate spring-loaded parts with a conical outer surface, in contact with a movable coupling along its inner surface, which is made conical.

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Claims (1)

Claim A quick-disconnect pipe connection containing a multi-leaf collet with internal jaws and a movable spring-loaded locking sleeve, characterized in that, in order to increase the reliability of the connection at high pressure under conditions of its cyclic change. the collet is made in the form of a nut, cut into several separate spring-loaded parts with a conical outer surface in contact with the movable coupling on its inner surface, made conical. Phi * 1 Fig. 3 View B FIG.