SU1536146A1 - Device for connecting pipelines - Google Patents

Abstract

This invention relates to mechanical engineering and pneumatic engineering. The purpose of the invention is to increase reliability. The device for connecting pipelines consists of choke 1, nipple 2, cap nut 3, lock nut 4, two liners 5. The bushings 5 are made in the form of half rings. The undocking of the joint is performed as follows. The cap nut 3 is screwed from fitting 1 to the contact of the lock nut 4 with the stop 12. At the same time, the first step 9 of the cap nut 3 moves relative to the bushings 5, thereby ensuring free access to them from the periphery. Due to the multidirectional threads of the cap nut 3 under the fitting 1 and the lock nut 4, the union nut 3 stops the union nut 3 from being screwed off from the fitting 1. If there is an overpressure in the pipelines, the compressed gas through the gap formed between the sealing surfaces of the fitting 1 and the nipple 2 will start to escape to the atmosphere creating a sound effect that warns of danger and gives a signal to stop disconnecting the connection. 5 il.

Description

one

(21) 4396025 / 25-29

(22) 03/21/88

(46) 01/15/90. Vup № 2

(72) Ya.I. Zhulnev, E.G. Bushkin

and A.P. Mosin

(53) 621.643 (088.8)

(56) USSR Author's Certificate # 1216539, cl. F 16 L 33/00, 1984.

(54) DEVICE FOR CONNECTING PIPELINES

(57) The invention relates to mechanical engineering and concerns pneumatic technology. The purpose of the invention is to increase reliability. The device for connecting pipelines consists of choke 1, nipple 2, cap nut 3, lock nut 4, two liners 5. Liners

5 made in the form of half rings. The undocking of the joint is performed as follows. The cap nut 3 is screwed out from fitting 1 to the contact of the lock nut 4 with the stop 12. In this case, the first step 9 of the cap nut 3 moves relative to the bushings 5, ensuring free access to them from the periphery. Due to the multidirectional threads of the cap nut 3 for fitting 1 and the lock nut 4, the union nut 3 stops the union nut 3 from being screwed off from the fitting 1. If there is an overpressure in the pipelines, the compressed gas through the gap formed by the sealing surfaces of fitting 1 and the nipple 2 will release to the atmosphere, creating a sound effect that warns of the dangers and Witsgng.l to stop disconnecting the connection. 5 il.

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The invention relates to pneumatic engineering, in particular to designs of pipeline connections, and can be used in various fields of technology where the use of pipelines with detachable connections is required.

The purpose of the invention is to increase reliability by organizing a warning about the possibility of an emergency when disconnecting the connection.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 - device in the position of installation (or removal) of liners; in fig. 4 - device without liners; in fig. 5 - device in the initial position when docking (or disconnecting) pipelines. The device for connecting pipelines consists of nipple 1 (Fig. 1) nipple 2, cap nut 3, lock nut 4 and two inserts 5. The inserts 5 are made in the form of half rings 6 (Fig. 2) and 7 connected by pins 8. Cap nut 3 (Fig. 3) is made of three stages, with the diameter of each subsequent stage less than the previous one. The diameter of the first stage 9 is made with the possibility of covering the liners 5, and on the diameters of the second 10 and third 11 steps, multidirectional threads are made, respectively, under the lock nut 4 and fitting 1. The fitting 1 (Fig. 4) is outside from the side opposite to the sealing surface, with an emphasis 12 which has the ability to interact with the butt of the lock nut 4.

The device is assembled as follows.

The union nut 3 (FIG. 5) is screwed onto the fitting 1 and the lock nut 4 (FIG. 4) is screwed into it until it contacts the stop 12. The liners 5 are fitted to the pipe part of the fitting 1 (FIG. 3) and connected with pins 8 (FIG. 2) and insert the nuts 3 (FIG. 3) into the fitting 1 into the internal cavity until they stop at the fitting 1. Thereafter, the fitting 1 (FIG. 1) is sealed with the nipple 2 by screwing the cap nut 3 onto the fitting 1. At the same time between the lock nut 3 and an anvil 12 forms a gap, and the liners 5 are completely covered by the first stage of the union nut 3, blocking access to the locknut 4 and both chiva its protection from screwing.

The connection is disconnected as follows.

The union nut 3 (Fig. 3) is screwed from the socket 1 until the lock nut 4 contacts the stop 12 (the gap between the lock rod 4, figure 1, and the stop 12 is limited by the stroke of the nut 3). The stroke of the cap nut 3 can be chosen in such a way that when it is in contact with the stop 12 (Fig. 3), free access is provided from the periphery to remove the liners 5. At the same time, a gap is formed between the sealing surfaces of fitting 1 and nipple 2, through which In overpressure pipelines, compressed gas begins to escape into the surrounding atmosphere, creating a sound effect (the greater the pressure, the louder the sound effect), which serves as a danger warning and a signal to stop the disconnection of the joint. At the same time, thanks to the multidirectional threads of the cap nut 3 under the nozzle 1 and the lock nut 4, the latter locks the cap nut against screwing it off the nozzle. After the overpressure has been relieved, the liners 5 are removed from the pipelines, the lock nut 4 (Fig. 4) is unscrewed, and the union nut 3 (Fig. 5) is screwed off from the choke 1.

Claims (1)

Invention Formula A device for connecting pipelines, comprising a fitting, a nipple and a cap nut, characterized in that, in order to increase reliability, it is provided with a lock nut located inside the cap nut and two liners made in the form of half-rings and installed with the possibility of their connection with each other, and the cap nut is made three-step with the diameter of each subsequent step less than the previous one, and the first step is made with the possibility of covering liners, and on the second and third steps there are multidirectional p The cuts are respectively for the lock nut and the fitting, which is outside from the side opposite to the sealing surface, is made with an emphasis and is installed with the possibility of its interaction with the end face of the lock nut. iZ, v777f eleven TO (pual A-A fig 2 Editor A. Ogar Compiled by V. Biryukov Tehred M. Khodanich Proofreader V. Kabatsy Order 97 Circulation 554 VNIIPI State Committee on Inventions and Discoveries at the State Committee for Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 “.. - - - - - - - - .- .МШ. Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription