JPH0633842B2 - Assembly method of terminal fittings for fluid transportation pipe - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for assembling a terminal fitting attached to a fluid transport pipe for transporting a high-pressure fluid such as oil collected from a submarine oilfield, and more particularly to a fluid transport pipe. The present invention relates to an improvement in a method of assembling a terminal member for a fluid transportation pipe having a plurality of bundle pipes around which a different fluid or the like is supplied for various purposes.

(Prior Art) Generally, this type of terminal fitting for a fluid transport pipe has an outer case body fixed to the end of the fluid transport tube body and fixed between the terminal fitting body and the fluid transport tube body. And the ends of a plurality of bundle pipes, which are provided around the fluid transport pipe body and fixed to the fluid transport pipe body by a sheath, are exposed around the terminal metal fitting body, and the bundle pipes are exposed. The terminal is fixed to the outer case. In the prior art, when assembling the terminal fitting to such a composite fluid transport pipe, the outer case is previously drawn inward to the top of the fluid transport pipe body, and after fixing the terminal fitting body, the outer case is attached to the terminal fitting body. I was pulling to the side. For this reason, since the bundle pipe had its sheath cut off considerably long so that it was located outside the outer case, the exposed length of the bundle pipe after assembly was large, and during transport of this complex fluid transport pipe and after installation. There was a risk of damage to the bundle tube.

(Object of the Invention) An object of the present invention is to provide a method for assembling a terminal fitting for a fluid transportation pipe, which enables the terminal fitting to be assembled without increasing the exposed length of the bundle pipe.

(Structure of the Invention) A terminal fitting for a fluid transportation pipe to which the assembly method according to the present invention is applied is fixed across the terminal fitting body attached to the end of the fluid transportation pipe and between the terminal fitting body and the fluid transportation pipe. A plurality of bundle pipes, which are provided around the fluid transport pipe body and fixed to the fluid transport pipe, are exposed around the body of the terminal metal fitting and are exposed. Is fixed to the outer case. However, in the assembly method of the present invention, the outer case is fitted into the sheath of the fluid transport pipe in advance and pulled inward to keep the terminal fitting body and the fluid transport pipe body watertight. After fixing and fixing the gasket metal fitting to the fluid transport pipe main body while keeping watertightness, pull the outer case toward the terminal metal fitting main body side, then pull out the exposed end of the bundle pipe from the outer case, and It is characterized in that one end of the spout is kept watertight and fixed to the body of the terminal fitting, and the other end of the outer case is kept watertight and fixed to the gasket fitting, and finally the bundle pipe is fixed to the outer surface of the outer case.

In this way, the outer case is fitted on the bundle pipe, and the bundle pipe is pulled out after pulling the outer case toward the terminal fitting side. Therefore, the exposed length of the bundle pipe may be short, and thus the composite fluid transportation Eliminates the risk of damaging the bundle pipes during transport and after installation.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a terminal member 10 for a fluid transport pipe assembled by the method of the present invention, and a fluid transport pipe 12 is a fluid transport pipe main body. 1
4 and at least one bundle tube 18 provided around it and fixed by a sheath 16. Although only two bundle pipes 18 are shown in the illustrated embodiment, actually four or six bundle pipes 18 are provided at intervals of 90 degrees or less. The sheath 16 is peeled off at the end of the fluid transport pipe 12 to expose the bundle pipe 18. Reference numeral 18a indicates an exposed end of the bundle tube 18.

The fluid transport pipe main body 14 is wound on the inner pipe 20 and a first reinforcing layer 22 such as a C-shaped steel member wound on the inner pipe 20 at a small pitch and on the first reinforcing layer 22 at a large pitch. Second reinforcing layer 24 such as a flat strip or wire
And an inner sheath 26 provided thereon. The fluid transport tube main body 14 is exposed by stepping off the inner sheath 26 and the second and first reinforcing layers 24 and 22.

The terminal fitting 10 includes a terminal fitting body 28 attached to the end of the fluid transport pipe body 14 and an outer case 30 fixed across the terminal fitting body 28 and the fluid transport pipe body 14. The exposed ends 18a of the plurality of bundle tubes 18 extend around 30. Inside the outer case 30, the inner pipe 20 of the fluid transport pipe body 14 is fixed to the terminal fitting body 28 via the gasket 32 while maintaining liquid tightness, and the first reinforcing layer 22 is inside the gasket fastening fitting 34 for fastening the gasket 32. Inserted in
Further, the gasket receiving metal fitting 36 is fixed on the inner sheath 26 via the gasket 38, and the second reinforcing layer 24 is held by the reinforcing holder 40 that abuts against the gasket receiving metal fitting 36.

A joint 42 is attached to the exposed end 18a of the bundle tube 18. As shown in FIG. 3, this joint 42 has a nut 42A at the center, and a cylindrical male joint portion 42B with a screw on the outer peripheral surface of the parallel portions on both sides thereof, and a connecting nut 42C at both ends thereof. Connecting sleeves 42D, 4 connected via
2E, the end 18a of the bundle pipe 18 is connected to the connection sleeve 42D side by welding or the like, and a pipe (not shown) is connected to the connection sleeve 42E side.

The male joint portion 42B of the joint 42 is the outer case 30.
The nut 42A is screwed into the threaded hole 44a of the ring-shaped mounting member 44 mounted on, and screwed and fixed to the mounting member 44.

Next, the assembly method of the present invention will be described with reference to FIG.
First, the sheath 16 is stripped off and the bundle tube 18 having a predetermined length is removed.
And the fluid transport pipe main body 14 is stepped off.
Pull it all the way inward. Next, the terminal metal fitting body 28 and the gasket receiving metal fitting 36 are fixed to the fluid transport pipe body 14 while keeping them watertight by the gaskets 32 and 38. In this case, the gasket 32 is fixed by the screw 46.
The gasket 38 is tightened by the gasket tightening metal fitting 34 fixed to the above, and the gasket 38 is tightened by the gasket tightening metal fitting 48 screwed into the gasket receiving metal fitting 36.

Thereafter, the outer case 30 is pulled toward the terminal fitting body 28 side, and then the exposed end 18a of the bundle pipe 18 is pulled out from the outer case 30 as shown by the dotted line in FIG. In this way, one end of the outer case 30 is water-tightly fixed to the terminal fitting body 28 through a seal member 50 such as an O-ring, and the other end of the outer case 30 is sealed to the gasket receiving fitting 36 such as an O-ring. The member 52 is fixed while maintaining watertightness. Finally, the exposed end 18 of the bundle tube 18
a is fixed to the outer surface of the outer case 30 via a mounting member 44.

In this way, the outer case 30 is fitted on the bundle pipe 18 on the fluid transport pipe main body 14, so that the exposed end 18a of the bundle pipe 18 may be short, and therefore the bundle pipe 18 after the assembly is assembled. The exposed part can be short.
The exposed end 18a can be protected by surrounding the exposed end with a heat shrink tube (not shown).

In order to make it easier to pull out the exposed end 18a of the bundle pipe 18 from the outer case 30, the exposed end 18a of the bundle pipe 18 is formed on the inner surface of the outer case 30 as shown in FIG.
It is preferable to provide a vertical groove 30a into which the groove is inserted, or screw the inner collar 30b of the outer case 30 to the outer case body as shown in FIG.

(Effect of the Invention) According to the present invention, as described above, the outer case can be fitted on the bundle pipe, so that the length of the exposed end of the bundle pipe can be short, and therefore the transportation of the fluid transport pipe can be performed. Eliminates the risk of damaging the bundle tube during or after installation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the upper half of a terminal fitting for a fluid transport pipe assembled by the method of the present invention, FIG. 2 is an explanatory view showing the main part of the method of the present invention, and FIG. 3 is a connecting portion of a bundle pipe. FIG. 4 is a front view of another example of the outer case, and FIG. 5 is a partial sectional view of still another example of the outer case. 10 ... Terminal fitting, 12 ... Fluid transport pipe, 14 ... Fluid transport pipe main body, 16 ... Sheath, 18 ... Bundle pipe, 1
8a ... exposed end, 28 ... end fitting body, 30 ... outer case, 32,38 ... gasket, 36 ... gasket receiving fitting, 50,52 ... seal member.

Claims (1)

[Claims] 1. A fluid container having a terminal metal fitting body attached to an end of the fluid transportation pipe, and an outer case fixed between the terminal metal fitting body and the fluid transportation pipe. The ends of a plurality of bundle pipes provided around the transportation pipe body and fixed to the fluid transportation pipe are exposed and extend, and the exposed ends of the bundle pipe are fixed to the outer case. In the assembling method described above, the outer case is previously drawn inward to the sheath of the fluid transport pipe, the terminal metal fitting body and the fluid transport pipe body are fixed in a watertight manner, and the fluid transport pipe body is also fixed. After fixing the gasket receiving metal fitting to be watertight, pull the outer case toward the terminal metal fitting body side,
Then, the exposed end of the bundle pipe is pulled out from the outer case, one end of the outer case is kept watertight and fixed to the terminal fitting body, and the other end of the outer case is kept watertight to the gasket fitting. A method for assembling a terminal fitting for a fluid transport pipe, which comprises fixing and finally fixing the bundle pipe to an outer surface of the outer case.