SU1767271A1 - Connection of high pressure hose with end valving - Google Patents

Abstract

The essence of the invention: the sleeve is reinforced with a power frame. On the cylindrical part of the corrugated coupling on the side of the locking collar, a narrowing with an inner diameter smaller than the outer diameter of the sleeve was made. The tapering is in contact with the end part of the sleeve and forms an annular chamber between the locking collar and the end of the sleeve, filled with the material of the sleeve, extruded from the compression zones. 2 Il.

Description

The invention relates to the field of mechanical engineering, the production of flexible pipelines and can be used to connect high pressure hoses (HPH) with end fittings used in hydroficated units.

The purpose of the invention is to increase the reliability of the connection by ensuring uniform crimping of the sleeve.

Figure 1 shows the connection of the RVD with the end fittings, a longitudinal section in figure 2 - coupling assembled with the WFD.

The connection of the high pressure hose with the end fittings contains nipple 1, corrugated coupling 2 with locking collar 3 and p / kav 4, reinforced with a power frame 5. On the cylindrical part 6 of the coupling 2 from the side of the collet 3, a narrowing 7 is made, the inner diameter d of which is smaller than the outer diameter di of sleeve 4. Tapering 7 is in direct contact with the end 8 of the sleeve 4, while between the lock collar 3 of the coupling 2 and the end 8

sleeve 4 is placed backup ring chamber 9 for the excess 10 of the material of the sleeve 4, extruded from the compression zones 11. In the radio-. The direction of the camera 9 is limited to the inner surface 12 of the coupling 2 and the outer surface 13 of the nipple 1.

The connection functions as follows.

When assembling the coupling 2 with the sleeve 4, the end 8 of the sleeve 4 abuts against the surface 12 of the constriction 7 of the coupling 2 and stops at some distance from the locking collar 3 of the coupling 2. When the coupling 2 is compressed, the material 4 in the corrugation 14 is extruded. In the case of kegda, the wall thickness of the sleeve 4 has a maximum value and the entire amount extruded in the reduction zones 11 of the material of the sleeve 4 does not fit into the cavities of the corrugations 14, all unnecessarily extruded material 10 of the sleeve 4 is placed in the backup ring chamber 9. At the same time, the pressure in the reduction zones eleven and a cavity corrugation 14 is practically not increasing. VI

ABOUT

VI th VI

This means that the degree of compression of the sleeve A is kept stable.

Claims (1)

As is known, a stable degree of compression of the high-pressure hoses ensures reliable connection with the end fittings, since it excludes both the low-pressure hoses, which leads to pulling the sleeve out of the connection, and clamping it, as a result of which the coupling of the nipple is destroyed. Invention Compound high pressure hose with end fittings containing a nipple, a corrugated coupling with a locking 0 sleeve and reduction zones and a sleeve reinforced with a power frame, which is so that, in order to increase reliability by ensuring uniform sleeve reduction, the cylindrical part of the coupling on the side of the clamp collar is narrowed with an inner diameter smaller than the outer diameter of the sleeve, contacting with the end part of the sleeve and forming an annular chamber between the locking collar of the coupling and the end of the sleeve, filled with the material of the sleeve, extruded from the compression zones. / five 7 FIG. / 4 5 12 7 FIG. 2