JPS60215190A - Terminal fitting for high-pressure fluid transport pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the terminal fitting of high-pressure fluid transport pipes such as oil pipes and water pipes installed on the seabed.

This type of high-pressure fluid transport pipe generally consists of a plastic pipe, an inner and outer metal reinforcing layer provided on the plastic pipe, and a plastic jacket provided on the outer metal reinforcing layer. The fluid transport pipe has an end fitting for connecting its end to equipment or the like. The terminal fitting of the prior art is a plastic pipe of a fluid transport pipe.

The metal fitting body is fitted to the exposed end of the metal fitting, and the gear is fitted to the plastic jacket and screwed to the metal fitting body.
The outer metal reinforcing layer is fixed by a collar in the space between the fitting body and the cap, and the inner metal reinforcing layer is exposed in the space, and the epoxy resin 11% etc. It is filled with filler. However, the terminal fitting of this prior art is not suitable for cases where the filler is insufficiently filled or there is a problem with the filler, or when the transport fluid is at a very high temperature and the pressure resistance of the filler becomes small. In the space between the collar that fixes the outer metal reinforcing layer and the fitting body, if the fitting is subjected to a shock during installation and the filler cracks and the compressive resistance becomes small, the end of the metal reinforcing layer is The problem was that the parts could become abnormal and could easily be destroyed by internal pressure.

The purpose of the great invention is to prevent destruction caused by such internal pressure.
An object of the present invention is to provide an end fitting for a high-pressure fluid transport pipe that can be used as a high-pressure fluid transport pipe.

Embodiments of the present invention will be described in detail with reference to the drawings. Figure 9 shows the terminal fitting 10 of the high-pressure wave body transport pipe according to the present invention, and the high-pressure fluid transport pipe 12 is connected to a plastic pipe 14. It consists of an inner and outer metal reinforcing layer 16,18 provided at -L and a plastic jacket 20 provided on the outer metal reinforcing layer 18. In the embodiment shown in FIG. 4, the inner metal reinforcing layer 16 is formed by spirally winding a metal band having a substantially U-shaped cross section.
a and a second layer 18b formed by spirally winding a metal band having a substantially inverted U-shaped cross section so as to straddle adjacent turns of the metal band of the first layer and mesh with each other on the first layer, The outer metal reinforcing layer 18 is formed by spirally winding a metal strip or wire into two layers at a pitch larger than that of the inner metal reinforcing layer 16.

The terminal fitting 10 includes a fitting main body 22 that is liquid-tightly fitted to the exposed end 14a of the plastic pipe 14 of the fluid transport pipe 12.
and at the end of the plastic jacket 20! It consists of a cap 24 that is tightly fitted and screwed onto the metal fitting body 22. Liquid-tightness between the fitting body 22 and the plastic pipe 14 and between the cap 24 and the plastic jacket 20 is achieved by seals compressed by plugs 26, 28 placed between them and screwed onto the fitting body 22 and the cap 24. held by rings 30.32. In the space 23 between the metal fitting body 22 and the cap 24, the outer metal reinforcing layer 18
are bounded by inner and outer collars 34, 36, 34', 36', and the ends of the inner metal reinforcing layer 16 are exposed in stages. The space 23 is filled with a filler 38 such as epoxy resin. In addition, color 34.3
6 fixes the wire to the metal strip or gold inside the outer metal reinforcing layer 18, collar 34°, 36" the collar 34.36"
The outer metal strip or metal wire is fixed at a position shifted in the axial direction. Of course, the metal strips or wires inside and outside the outer metal reinforcing layer 18 may be fixed together by collars 34, 36.

The terminal fitting IO of the present invention has an end surface of the fitting main body 22 and a collar 3 on the inner metal reinforcing layer 16 exposed in the space 23.
A reinforcing ring 40 is disposed between the reinforcing ring 40 and the reinforcing ring 40, and the filler 38 is filled so as to bury this reinforcing ring 40. Reinforcement ring 40
In addition to metal, it can be made of a material with high mechanical strength such as plastic or fiber-containing hardened resin. As shown in FIG. 2, the reinforcing ring 40 includes a first adjustment ring portion 42 that has a concave surface 42a along the end surface of the collar 34 and engages with the collar 34, and is screwed into this adjustment ring portion 42. a second adjustment ring portion 44 that engages with the end surface of the plug 26 attached to the fitting body 22, and thus
By adjusting the threading of the ring portion, the axial length can be adjusted to bring the plug 26 and collar 34 into close contact. The radius of curvature R' of the concave surface 42a of the first adjustment ring portion 42 is the sum of the radius of curvature R of the lower surface of the collar 34 and the thickness tl of the inner layer of the outer metal reinforcing layer 18, or the sum of R, tl, and the further outer layer. This is the sum of the thickness t2. still.

As can be seen from FIG. 1, the reinforcing ring 40 has a relief 40a on the plug 26 side to enable the plug 26 to be screwed into place. Further, as can be seen from FIG. 2, a through hole 44a passing radially through the adjusting ring portion 44 of $2 is provided, and the reinforcing ring 40 and the plasti 1. Kupaibu 14
A soft metal 45 such as plastic or lead is molded so that the inner metal reinforcing layer 16 is embedded between the two. Note that a backing groove 44b into which the backing 46 engages is provided on the surface that engages with the plug 26. In addition, the reinforcing ring 40 and the collar 34 are located 1 m apart from each other as shown in Fig. 3 (A).
) As shown in (B), teeth 40b and grooves 34a are provided which engage with each other across the folded metal band or metal wire of the outer metal reinforcing layer 18.

In this way, the space between the metal fitting body 22 and the collar 34 is reinforced by the reinforcing ring 40, so the filler 3
The pressure resistance and pressure resistance of the filler 38 will be maintained even if the filler 38 is insufficiently filled or cavities occur, or even if high-temperature fluid passes through it or shock is applied during installation.
1? The circumferential ring 40 is attached to the 41F without reducing the force.
and collar 34 - teeth 40b and groove 34 that mesh with each other
Since the outer metal reinforcing layer 18 is folded back, the corner of the space between the collar 34 and the inner metal reinforcing layer 16, where a gap is relatively likely to be formed, is reinforced and the internal pressure resistance does not deteriorate. .

Note that this terminal fitting 10 has a plug 28. Cap 24.
Fit the collar 36, 36' onto the fluid transport tube 12 and peel off the end of the fluid transport tube 12.

Fitting the collar 34.34'' onto the outer metal reinforcing layer 18, fixing the outer metal reinforcement Nl18 at the collars 34, 36, 34', 36', fitting the reinforcing ring 40, fixing the metal fitting main body 22, The axial length of the reinforcing ring 40 is adjusted, the space inside the reinforcing ring 40 is molded, the gear pump 24 is fixed, the plug 28 is fixed, and finally, the filler 38 is filled and assembled.

According to the present invention, as described above, the reinforcing ring reliably prevents damage due to internal pressure in the space within the gear knob between the metal fitting body and the collar.

In particular, this reinforcing ring and the collar that fixes the outer metal reinforcing layer are in close contact with each other with the outer metal layer sandwiched between them due to their interlocking mechanism and grooves, which significantly improves internal pressure resistance. There is real benefit.

[Brief explanation of the drawing]

17 is a vertical cross-sectional view of the upper half of the terminal fitting of the high-pressure fluid transport pipe according to the present invention, FIG. 2 is a vertical cross-sectional view of the upper half of the metal reinforcing ring used in the present invention, and FIG. 3 (A) (B) is an enlarged side view of the collar that fixes the reinforcing ring and the outer metal reinforcing layer. 10---One terminal fitting, l 2--One--High pressure fluid transport pipe, 14-One---Plastic pipe, 16.1
8---Inner and outer metal reinforcement layers. 2Q---1-Plastic jacket, 22----Metal fitting body, 24-1---Cap, 34.36.34'
, 36'----One color, 34a----Groove, 38
----- One-filling agent, 40 ----- Reinforcement ring, 40b --
--One tooth. Figure 2 4n lI Figure 3 CA)

Claims (1)

[Claims] Plastic pipe and the L of the plastic pipe
A high-pressure fluid V? consisting of an inner and outer metal reinforcing layer provided on the outer metal reinforcing layer and a plastic jacket provided on the outer metal reinforcing layer 1g11. A metal fitting body that is liquid-tightly fitted to the raised end of the plastic pipe F of the I pipe, and a camp that is liquid-tightly fitted to the plastic jacket and screwed to the leg metal fitting body. The end of the outer metal reinforcing layer is fixed by a collar within the space between the metal fitting main body and the cap, and the end of the inner metal reinforcing layer is extended W4 in the space Mij, and the end of the inner reinforcing layer is In the end fitting of a high-pressure fluid transport pipe, the inner part of which is filled with a filler, the inner metal reinforcing layer is exposed to the space between the fitting body and the collar. A reinforcing ring is placed between ll? ii) Teeth and grooves that mesh with phase #: are provided on the opposing surface of the collar with the outer metal reinforcing layer in between, and the filler is so as to embed the reinforcing ring. A terminal fitting for a high-pressure fluid transport pipe characterized by being filled.