SU1587303A1 - Sleeve for joining pipe ends - Google Patents

Abstract

The invention relates to mechanical engineering and is intended to connect the ends of pipes to hydro and gas equipment. The purpose of the invention is to increase reliability, simplify manufacturing and assembly technology. The crimping element of the cartridge is made in the form of a toroidal ring with a slit radially or inclined at an acute angle to the ring face or in the form of an elastic washer with a conical surface on the side of one end and with similar slots. On the inner surface of the holder in its middle part there is a protrusion, the minimum diameter of which is less than the outer diameter of the pipes to be joined. Inside the pipes, a sleeve is installed with annular grooves at the ends along the outer diameter. In the middle part of the liner there is a bead, the diameter of which is larger than the internal diameter of the pipes being joined. The width of the protrusion in the holder and collar sleeves are equal to each other. 1 hp f-ly, 7 ill.

Description

The invention relates to mechanical engineering, and more specifically to water and gas equipment, and is intended to connect pipe ends.

The purpose of the invention is to increase reliability, simplify manufacturing technology and assembly by increasing its transverse rigidity.

Figure 1 shows the cartridge, a longitudinal section; figure 2 - crimp element in the form of a toroidal ring with a radial slot, side view; FIG. 3 is a view A of FIG. 2 — FIG. 4 is a crimp element in the form of a toroidal ring with an inclined slot, side view; figure 5 is a view of B in figure 4; Fig b elastic washer with a slot, side view on

Fig.7 - cartridge with push conical washer.

A sleeve 3 with annular grooves 4 and 5 at the ends of the outer diameter is installed inside the connected pipes 1 and 2. It should be noted that the grooves 4 and 5 of length L may be cylindrical, conical or shaped. In the middle part of the sleeve there is a bead, the diameter of which is larger than the inner diameter of pipes 1 and 2 and smaller than their outer diameter. The pipes are enclosed by a ferrule 6 having internal conical surfaces 7 and 8. In addition, the cartridge has clamping elements 9 and Yudl of power coverage with connected ends of pipes 1 and 2 of sleeve 3, Conical surfaces 7 and 8 of holder 6 are in contact with crimping elements 9 and 10. which are pressed to the yoke is provided with cap nuts 11 and 12. The outer middle part of the yoke has a loop 13 for covering the key with a jaw or is made in the form of a multifaceted nut,

On the inner surface of the holder in its middle part there is a protrusion, the minimum diameter of which is less than the outer diameter of the pipes to be joined. Width 1 of the protrusion in the holder 6 and the collar of the sleeve 3 are equal to each other. Crimping element 9 (10) can be made in the form of a toroidal ring with a radial slot 14 (FIGS. 2 and 3) or with a slot 15 inclined at an acute angle a to the ring end (FIGS. 4 and 5). In addition, the crimping element can be made in the form of an elastic washer (6) with a conical I surface 16 from the end, I adjacent to the conical surface of the yoke 6. Between the butt of the cap nut 11 I and the crimping element 9 A taper washer 17 can be installed to increase the clamping force of the pipe element 1 (Fig. 7) and facilitate the screwing of the nut 11 on the yoke 6.

The process of assembling the cartridge is

next.

The nuts 11 and 12 are put on the ends of the pipes, after which the crimping elements 9 and 10 are freely put on. Then a sleeve 3 and a sleeve 6 are installed between the ends of the pipes; Using a key (not shown) or on the assembly stand, the ferrule 6 is kept from turning, and by screwing the nut 11 and 12 onto the ferrule 6, the crimping element is moved in the direction of the ferrule. In the process of interaction of the crimp element

9c conical surface 7 and element

10 with the conical surface 8 of the cage 6, the crimping elements are deformed and their diametrical dimensions are reduced due to a decrease in the distance between the ends.

In this case, the ends of the pipes 1 and 2 are crimped by the elements 9 and 10 and, as a result, the elastic

The deformations of the pipes located in the zones of the annular grooves 4 and 5, with the length L on the sleeve 3, partially go into the annular grooves, which ensures the subsequent dissociation of the joint.

The presence of the male sleeve 3 and the female holder b, located on the inside and outside of the pipes, increases the transverse rigidity of the joint, and the presence of an inclined through slot 15 on the crimping element 9 (10) ensures their contact with the pipes around the perimeter.

15

Claims (2)

1. Cartridge for connecting pipe ends. containing clip, union nut and crimp element, characterized in that that, in order to increase reliability, simplify the manufacturing and assembly technology, it is provided with a sleeve covered at the ends by connecting pipes, and the crimping element is designed as a toroidal ring with a radial or inclined slot or as an elastic washer with a conical surface on one of the ends and with similar slits, and on the inner surface of the clip in its middle the part has a protrusion, the minimum diameter of which is smaller than the outer diameter of the pipes to be joined; on the outer surface of the sleeve, annular grooves are made on the outer surface of the sleeve, and in the middle part there is an annular collar, the outer diameter of which is larger than the inner diameter of the pipes being connected and the width of the ledge in the cage. 2. The cartridge according to claim 1, which is different in that it is provided with a conical washer installed between the cap nut and the crimp element. F / 9 (y) / Fi9.2 Fiel Type A Fi.Z -9 (70) S X 15 Feed sixteen -9 (y} TWW FIG. five P 9 7