JPH0736228Y2 - Fluid transport pipe terminal fittings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a terminal fitting for a fluid transportation pipe that transports a high-pressure fluid such as crude oil produced from an undersea oilfield.

[Conventional technology]

FIG. 6 shows the structure of a conventional terminal fitting 10 for a fluid transportation pipe.
As the fluid transport pipe 12, for example, an inner reinforcing member 16 of a C-shaped metal strip provided spirally on the inner pipe 14 at a small pitch, and spirally provided on the inner reinforcing member 16 at a large pitch. The outer reinforcing member 18 is made of a plurality of metal strips or metal wires, and a plastic sheath 20 is provided on the outer reinforcing member 18.

The terminal fitting body 11 of the fluid transport tube terminal fitting 10 includes a terminal connecting member 22 that is mounted in a fluid-tight manner on the inner pipe 14 exposed at the terminal 12a of the fluid transport tube 12, and the terminal connecting member 22. And an outer case 24 for fixing to the end 12a of the fluid transport pipe 12. The terminal connecting member 22 has a flange 22a to be attached to a device (not shown), and the outer case 24 has an inward flange 24a sufficiently larger than the outer diameter of the sheath 20 of the fluid transport pipe 12 as shown.

The outer case 24 of the terminal fitting body 11 is fitted in advance on the fluid transport pipe 12 and is sufficiently inward from the terminal,
In this state, connect the fluid transfer pipe 12 to the inward flange of the outer case 24.
A gasket receiving fitting 28 and an end connecting member 22 to be attached to the inner surface of 24a via a seal member 26 such as an O-ring are attached to the fluid transport pipe 12.

30 is a gasket member for the sheath, which is the end 12 of the fluid transport pipe 12.
By being inserted between a and the terminal fitting body 11, supported behind (inside) the gasket receiving fitting 28, and tightened and fixed by the fastening fitting 34 screwed into the gasket receiving fitting 28 via the washer 32, The sheath 20 of the fluid transport pipe 12 is liquid-tightly sealed.

The outer reinforcing member 18 exposed at the end of the fluid transport pipe 12 is fixed in front of (outward of) the gasket receiving fitting 28 by an outer reinforcing member holder 36 formed of an annular body. Each outer reinforcing member 18 has its end bent outward and is attached to a separate outer reinforcing member holder 36 by welding or the like, and adjacent outer reinforcing member holders 36 are telescopically fitted and welded to each other. And is fixed to the sheath 20 by welding and attached to a compressible sheath holder 38 which holds the sheath 20 by a compressing action or the like.

The terminal connecting member 22 of the terminal fitting body 11 is the terminal of the fluid transport pipe 12.
The inner pipe 14 exposed at 12a is fitted and fixed in a liquid-tight manner, and this liquid-tightness is achieved by the inner-pipe gasket member 40 arranged inside the terminal connecting member 22. That is, the inner pipe gasket member 40 is tightened and fixed to the terminal connecting member 22 with the fasteners 44 fixed by the bolts 42.

In the outer case 24, the sheath gasket member 30 and the inner pipe gasket member 40 are fixed, and the outer reinforcing member 18 is fixed. Then, the outer case 24 is drawn to the end 12a of the fluid transport pipe 12 and its inward flange 24a is sealed to the gasket receiving metal fitting 28. The terminal connecting member 22 is liquid-tightly fitted and tightened so as to be attached via the member 26. Liquid tightness between the outer case 24 and the terminal connecting member 22 is performed by a sealing member 46 such as an O-ring provided on the outer periphery of the terminal connecting member 22. Note that the terminal bracket body 11
Room temperature curable filling layer 48 made of epoxy resin in the inner space
Is filled and cured. The conventional fluid transport pipe terminal fitting 10 has the above-described configuration.

[Problems to be solved by the device]

However, the conventional fluid transportation pipe 12 is usually 250 to 350 kg / c.
Since it is used at a high internal pressure of m ² , axial force of up to 30 tons is generated at the end of the tube. In order to support this axial force, the outer reinforcing member 18 needs to be firmly attached to the outer reinforcing member holder 36. As described above, the end of the outer reinforcing member 18 is bent outward so that the outer reinforcing member holder 36 Since it is attached by welding, there is a drawback that such bending and welding work is extremely troublesome and causes a high cost.Therefore, it is desired to propose a terminal metal fitting that can be performed easily. Was there.

[Means for Solving the Problems]

The present invention eliminates the above-mentioned drawbacks and provides a simple and inexpensive terminal fitting. The inner reinforcing member is spirally provided on the inner pipe at a small pitch, and the inner reinforcing member is spirally arranged at a large pitch on the inner reinforcing member. A terminal metal fitting body and the terminal metal fitting, which are liquid-tightly mounted on the inner pipe exposed at the end of the fluid transport pipe consisting of a plurality of outer reinforcing members provided on the outer reinforcing member and a sheath provided on the outer reinforcing member. An outer case for fixing the main body to the end of the fluid transport pipe, and a plurality of outer reinforcing member holders for fixing the outer reinforcement member exposed at the end of the fluid transport pipe in the outer case, and voids in the main body of the terminal fitting. In the terminal fitting for a fluid transport pipe including a room temperature curable filling layer filled in the outer reinforcing member holder, the outer reinforcing member holder is inserted into the end of the outer reinforcing member to be compressed and the outside Consists crimping sleeve having a flange for anchoring the temperature curable filler layer, it is characterized in that the crimped to the outer reinforcing member is embedded in the cold-curing filling layer.

[Action]

Since the outer reinforcing member holder is composed of a crimping sleeve, the outer reinforcing member can be attached to the outer reinforcing member holder easily and in a short time simply by inserting the sleeve into the end of the outer reinforcing member and compressing and crimping the sleeve. You can Further, since the brim provided on the outside of the holder is moored by the room temperature hardening filling layer, the holder can be easily moored at any position in the terminal metal fitting body, and is attached to the terminal metal fitting body of the outer reinforcing member. Is easily fixed.

〔Example〕

Next, an embodiment of the present invention will be described in detail with reference to FIGS. It should be noted that components having the same configuration as the conventional ones will be described with the same reference numerals. Reference numeral 50 denotes a terminal fitting for a fluid transport pipe according to the present invention. As the fluid transport pipe 12, for example, an inner reinforcing member 16 of a C-shaped metal strip provided spirally on the inner pipe 14 at a small pitch, and Inner reinforcement member
An outer reinforcing member 18 of a plurality of metal strips or metal wires spirally provided on the 16 at a large pitch, and the outer reinforcing member 18
And a plastic sheath 20 provided on the top of the.

The terminal fitting body 11 of the terminal fitting 50 for the fluid transport pipe includes a terminal connecting member 22 that is mounted in a fluid-tight manner on the inner pipe 14 exposed at the terminal 12a of the fluid transport pipe 12, and the terminal connecting member 22. And an outer case 24 for fixing to the end 12a of the fluid transport pipe 12. The terminal connecting member 22 has a flange 22a to be attached to a device (not shown), and the outer case 24 has an inward flange 24a sufficiently larger than the outer diameter of the sheath 20 of the fluid transport pipe 12 as shown.

The outer case 24 of the terminal fitting body 11 is fitted in advance on the fluid transport pipe 12 and is sufficiently inward from the terminal,
In this state, connect the fluid transfer pipe 12 to the inward flange of the outer case 24.
A gasket receiving fitting 28 and an end connecting member 22 to be attached to the inner surface of 24a via a seal member 26 such as an O-ring are attached to the fluid transport pipe 12.

30 is a gasket member for the sheath, which is the end 12 of the fluid transport pipe 12.
By being inserted between a and the terminal fitting body 11, supported behind (inside) the gasket receiving fitting 28, and tightened and fixed by the fastening fitting 34 screwed into the gasket receiving fitting 28 via the washer 32, The sheath 20 of the fluid transport pipe 12 is liquid-tightly sealed.

Further, the outer reinforcing member 18 exposed at the end of the fluid transport pipe 12 is located at the front (outer side) of the gasket receiving fitting 28, and the outer reinforcing member holder 52.
Fixed by. This outer reinforcement member holder 52 is
As shown in the figure, a bottomed compression port 52a is inserted into each end of the outer reinforcing member 18 and compressed, and an L-shaped collar 52b moored to the outside of the room temperature curable filling layer 48 made of, for example, an epoxy resin. It consists of a crimping sleeve with. 38 is the sheath 20 due to the compressing action of the room temperature curable filling layer 48 and the like.
It is a compressible sheath holder that suppresses

Since the outer reinforcing member holder 52 is only fixed to the outer reinforcing member 18 by crimping, the outer reinforcing member 18 can be easily and quickly attached to the outer reinforcing member holder 52. Also the holder 52
Since the brim 52b of the outer reinforcing member holder 52 is moored by the room temperature curable filling layer 48, the outer reinforcing member holder 52 can be easily moored at any position in the terminal metal fitting body 11, and the terminal metal fitting body 11 of the outer reinforcing member 18 can be easily anchored. It is easily fixed to.

The terminal connecting member 22 of the terminal fitting body 11 is the terminal of the fluid transport pipe 12.
The inner pipe 14 exposed at 12a is fitted and fixed in a liquid-tight manner, and this liquid-tightness is achieved by the inner-pipe gasket member 40 arranged inside the terminal connecting member 22. That is, the inner pipe gasket member 40 is tightened and fixed to the terminal connecting member 22 with the fasteners 44 fixed by the bolts 42.

In the outer case 24, the sheath gasket member 30 and the inner pipe gasket member 40 are fixed, and the outer reinforcing member 18 is fixed. Then, the outer case 24 is drawn to the end 12a of the fluid transport pipe 12 and its inward flange 24a is sealed to the gasket receiving metal fitting 28. The terminal connecting member 22 is liquid-tightly fitted and tightened so as to be attached via the member 26. Liquid tightness between the outer case 24 and the terminal connecting member 22 is performed by a sealing member 46 such as an O-ring provided on the outer periphery of the terminal connecting member 22. Note that the terminal bracket body 11
A room temperature curable filling layer 48 made of, for example, an epoxy resin is filled in the voids therein and is cured. Room temperature curing filling layer 48
May be made of a metal material made of a low melting point alloy such as a Pb—Sn alloy.

FIG. 3 shows the flange 52b of the outer reinforcing member holder 52 fixed to the fastening member 44 of the gasket member 40 for the inner pipe with bolts 54, and the other structures are the same as those shown in FIG. When the outer reinforcing member holder 52 is fixed in this way, the outer reinforcing member holder 52 is fixed more firmly, and the end of the fluid transport pipe 12 on which a larger axial tension acts can be retained.

FIG. 4 is an external reinforcement comprising a crimping sleeve having a compression port 56a which is inserted through the end of the external reinforcement member 18 and is compressed, and a room temperature hardening filling layer 48 and a disk-shaped collar 56b which is anchored to the outside. Two member holders 56 (see FIG. 5) are inserted into each end of the outer reinforcing member 18 in series and crimped and fixed, and other configurations are the same as those shown in FIG. .

According to such a structure of the outer reinforcing member holder 56, even if the holder 56 is not fixed to the fastening member 44, the fixing becomes more firm and even if an abnormally large tension acts on the fluid transport pipe 12, The tube can be sufficiently retained.

[Effect of device]

As described above, according to the present invention, the outer reinforcing member holder includes the crimp sleeve having the compression port inserted into the end of the outer reinforcing member and compressed, and the outer side of the crimp sleeve having the collar anchored to the room temperature hardening filling layer. Since it is pressure-bonded to the member and embedded in the room temperature hardening filling layer, it is possible to easily and quickly attach the outer reinforcing member to the outer reinforcing member holder, improving its workability and reducing the construction cost. Will be reduced. Also, since the terminal fitting of the present invention is firmly fixed to the end of the fluid transportation pipe,
Even if a large tension acts on the fluid transport pipe, there is no risk that the fluid transport pipe will fall out of the terminal fittings and fall off, and the fluid transport pipe can be reliably retained and fixed.

[Brief description of drawings]

FIG. 1 is a half sectional side view showing an embodiment of the present invention, and FIG.
FIG. 3 is an enlarged side view showing the outer reinforcing member holder, FIG. 3 is a half sectional side view showing another embodiment of the present invention, and FIG. 4 is a half sectional side view showing another embodiment of the present invention. 5 and 5 are enlarged vertical sectional views showing the outer reinforcing member holder, and FIG. 6 is a half sectional side view of the conventional example. 12 ... Fluid transport pipe, 14 ... Inner pipe, 16 ... Inner reinforcing member, 18 ... Outer reinforcing member, 20 ... Sheath, 24 ... Outer case, 48 ... Room temperature hardening filling layer, 50 ... The fluid transport pipe terminal fittings of the present invention, 52, 56 ... Outer reinforcing member holder,
52a, 56a ...... Compression port, 52b, 56b …… Tsuba.

Claims (1)

[Scope of utility model registration request] 1. An inner reinforcing member spirally provided on an inner pipe at a small pitch, a plurality of outer reinforcing members spirally provided on the inner reinforcing member at a large pitch, and an outer reinforcing member. A terminal fitting body that is liquid-tightly mounted on the inner pipe exposed at the end of the fluid transport tube that is formed of a sheath provided above, and an outer case that fixes the terminal fitting body to the end of the fluid transport tube, and A fluid transport pipe terminal including a plurality of outer reinforcement member holders for fixing the outer reinforcement members exposed at the ends of the fluid transport pipe in the outer case, respectively, and a room temperature curable filling layer filled in the voids in the terminal fitting body. In the metal fitting, the outer reinforcing member holder is formed from a crimping sleeve having a compression port that is inserted into the end of the outer reinforcing member and compressed, and a collar that is moored to the room temperature curable filling layer outside. Ri, fluid transport pipe end fittings, characterized in that the crimped to the outer reinforcing member is embedded in the cold-curing filling layer.