JPH05141589A - Assembly device for fluid feed pipe end metal fitting - Google Patents

Abstract

PURPOSE:To insert a reinforcement metallic tube into a plastic internal layer without inclining the metallic tube, and make the work in a short time. CONSTITUTION:A plastic internal layer 14 is held by a holding metal fitting 16. A slide plate 24 is installed slidably in a frame body 20 which is composed of the holding metal fitting 16 and three guide levers 18. A metal tube 38 for supporting a reinforcement metal tube 22 to be inserted is installed at right angle on the slide plate 24. The slide plate 24 is slid by extension of a hydraulic cylinder 40 to guide the reinforcement metal tube 22 by the metal tube 38 which is aligned with an axis of the plastic internal layer 14 and moved horizontally and to press-insert it into the plastic internal layer 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for assembling a terminal fitting attached to a fluid transport pipe used for transporting fluids such as high temperature and high pressure crude oil, water and gas produced from a submarine oil field. Related to the improvement of.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 7, a fluid transport pipe 12 includes an inner pipe 46 through which a fluid is transported, a reinforcing layer 48 provided on the inner pipe 46, and a reinforcing layer 48 of the reinforcing layer 48. It is composed of an anticorrosion sheath 50 provided above. Inner tube 4
As shown in FIG. 7, reference numeral 6 denotes an interlocking spiral tube 52 formed by meshing stainless tapes having an S-shaped cross section to receive external pressure strength, and an internal fluid coated on the spiral tube 52. When used in a place where external pressure is not applied, such as a shallow sea area or land, the spiral tube 52 is omitted. Further, the reinforcing layer 48 is formed by interlocking reinforcing strips having a C-shaped cross section with each other so that the inner layer faces outward and the outer layer faces inward and is wound at a small pitch.
The internal pressure reinforcing layer portion 54 of the layer structure and the internal pressure reinforcing layer portion 5
4 and two axial reinforcing layer portions 56 formed by winding metal reinforcing strips having a rectangular cross section at a large pitch.

As shown in FIG. 8, the terminal fitting 58 includes a terminal fitting body 60 mounted on the plastic inner layer 14 exposed at the terminal 12a of the fluid transport pipe 12, and the terminal fitting body 60 and the fluid transport tube. 12 and a housing 62 mounted so as to straddle the anticorrosion sheath 50. Inside the housing 62, the stepped portion of the end 12a of the fluid transport pipe 12 is kept airtight and liquidtight. The compound 64 is filled. Reference numeral 66 is a seal member 70 between the terminal fitting body 60 and the plastic inner layer 14.
Is a seal tightening member for tightening, and the seal tightening member 66 also presses the end portion of the internal pressure reinforcing layer portion 54. Reference numeral 68 is an annular fixing member that presses and fixes the end portion of the axial force reinforcing layer portion 24.

As shown in FIG. 8, the terminal metal fitting 58 is provided in a fluid-tight manner on the plastic inner layer 14 exposed at the terminal 12a of the fluid transport pipe 12. Since it is necessary to have air-tightness and liquid-tightness to prevent fluid from leaking from the terminal fitting 58, when the fluid transport pipe 12 having no spiral pipe 52 inside the plastic inner layer 58 is used, Reinforcing metal tube 2 having an outer diameter larger than the inner diameter of the plastic inner layer 14 inside the inner layer 14.
2 is inserted and the terminal fitting 58 is assembled.

In the prior art, the spiral tube 5 is
In the case of assembling the terminal fitting 58 on the fluid transport pipe 12 that does not have the two, as shown in FIG. 9, after processing the inner periphery of the end 14a of the plastic inner layer 14 into a tapered shape, the end 14a is formed.
The reinforcing metal pipe 22 to be inserted into a is applied, and the metal tube or the metal rod 38 is inserted into the reinforcing metal pipe 22 so that the reinforcing metal pipe 22 is uniformly inserted. Then, the reinforcing metal tube insertion portion 14b of the plastic inner layer 14
After softening by heating, the plastic inner layer 14 and the reinforcing metal tube 22 and the metal tube or metal rod 38 are supported, and the end portion 22a of the reinforcing metal tube 22 is hammered with a hammer 74 or the like so as not to be deformed. Thus, the metal fitting 22 for reinforcement is gradually inserted in the longitudinal direction of the plastic inner layer 14 to assemble the terminal fitting 58.

[0006]

However, in this prior art, since the reinforcing metal pipe 22 is driven by hand, the work is troublesome, the reinforcing metal pipe 22 is displaced, and the driving force is not constant. In some cases, such as when the end 14a of the tapered plastic inner layer 14 is irregularly processed, the reinforcing metal pipe 22 may be a metal tube or a metal rod 3.
There is a possibility that it may be inserted with tilting together with No. 8, and therefore there is a drawback that the liquid tightness and airtightness of the mounting portion of the terminal fitting 58 cannot be ensured.

It is an object of the present invention to avoid the above-mentioned drawbacks, and to assemble a terminal fitting for a fluid transportation pipe which can be inserted evenly in a short working time without tilting a reinforcing metal pipe to the plastic inner layer of the fluid transportation pipe. To provide a device.

[0008]

In order to solve the above problems, the present invention provides a plastic inner layer, a reinforcing layer provided on the plastic inner layer, and an anticorrosive layer provided on the reinforcing layer. The end of the fluid transport pipe is formed by inserting a reinforcing metal pipe having an outer diameter larger than the inner diameter of the plastic inner layer into the end of the plastic layer, and assembling a terminal fitting at the end of the fluid transport pipe. A device for assembling a metal fitting, comprising: a frame body comprising a metal fitting for holding a plastic inner layer of a fluid transport pipe, and three or more guide rods attached to the metal fitting so as to extend in the longitudinal direction of the plastic inner layer; A slide plate that is slidably held by the guide rod of the frame body and holds the reinforcing metal pipe and pushes the reinforcing metal pipe into the plastic inner layer for insertion, and a slide plate held by the frame body for reinforcing the slide plate. The slide plate is provided with a pushing drive means for pushing in the insertion direction of the metal pipe, and an inclination preventing means which is inserted into the reinforcing metal pipe and prevents the reinforcing metal pipe from tilting is attached to the slide plate at a right angle. The present invention provides a device for assembling a terminal fitting for a fluid transportation pipe.

[0009]

[Function] As described above, the plastic inner layer is held by the holding metal fittings, and the slide plate for pushing the reinforcing metal tube is
When the anti-tilt means is installed at a right angle, the reinforcing metal tube is pushed horizontally into the plastic inner layer in the longitudinal direction without tilting, so that the reinforcing metal tube is evenly inserted. In addition, since the reinforcing metal pipe is mechanically inserted through the slide plate by the pushing drive means, the work can be performed in a short time.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings, an embodiment of the present invention will be described in detail. FIG.
This assembling apparatus 10 mounts a holding metal fitting 16 for holding an exposed plastic inner layer 14 by stripping off an end 12a of a fluid transport pipe 12 and a holding metal fitting 16 so as to extend in the longitudinal direction of the plastic inner layer 14 and three guides. A frame body 20 composed of a rod 18 and a slide for slidably supported by the guide rod 18 of the frame body 20 for holding a reinforcing metal tube 22 and pushing the reinforcing metal tube 22 into the plastic inner layer 14 for insertion. It comprises a plate 24 and a push-in driving means 26 which is held by the frame 18 via a fixed plate 34 and pushes the slide plate 24 in the inserting direction of the reinforcing metal tube 22.

The guide rod 18 extends in the longitudinal direction of the plastic inner layer 14 as shown in FIG.
3 partial bolt rods 2 arranged on the circumference of
8A, 28B, 28C and three sets of nuts 30A, 30B, 30C that engage with these three partial bolt rods 28. These three partial bolt rods 28A,
As shown in FIGS. 1 and 4, 28 </ b> B and 28 </ b> C penetrate the collar plate 32 mounted around the holding metal fitting 16 to mount the holding metal fitting 16 via the collar plate 32. In addition, three partial bolt rods 28A, 28B, 28C
Is a slide plate 2 as shown in FIGS. 1 to 3 and 5.
4 and the fixing plate 34 are also penetrated. 3 sets of nuts 30
As shown in FIG. 1, A, 30B, and 30C are provided on the screw portions of the partial bolt rods 28 before and after the collar plate 32, the slide plate 24, and the fixing plate 34, respectively, and the nuts 30
However, the collar plate 32, the slide plate 24, and the fixing plate 34 are fixed to the threaded portions of the three partial bolt rods 28 to fix the collar plate 32, the sliding plate 24, and the fixing plate 34. Thus, the plastic inner layer 14 is the frame body 2
Since it is fixed and held at 0, the reinforcing metal pipe 22 is not displaced even when pushed and inserted, and the reinforcing metal pipe 2
2 cannot be inserted while tilting. The collar plate 32, the slide plate 24, and the fixed plate 34 are all shown in FIGS.
As shown in, it has a substantially triangular shape.

As shown in FIG. 1, the slide plate 24 is slidably held by the guide rod 18 of the frame body 20 and is provided with three sets of nuts 30A, 30B provided in front of the slide plate 24.
The guide rod 18 is provided by positioning 30C sufficiently forward.
Can slide on. In addition, the slide plate 24,
The reinforcing metal tube 22 is engaged with the rear end face of the reinforcing metal tube 22, and the reinforcing metal tube 22 is pushed and inserted into the plastic inner layer 14 by the pushing drive means 26 described later.

As shown in FIGS. 5 and 6, an inclination preventing means 36 is fixedly attached to the slide plate 24 at a right angle. As shown in FIGS. 5 and 6, the inclination preventing means 36 is composed of a hollow metal cylinder 38. The metal cylinder 38 is fixedly attached to the slide plate 24 so as to be inserted into the plastic inner layer 14. The metal tube 38 is inserted into the reinforcing metal tube 22, and the reinforcing metal tube 22 is held by the slide plate 24 via the metal tube 38.

Accordingly, the reinforcing metal tube 22 is inserted into the plastic inner layer 14 by the slide plate 24 together with the metal tube 38 while being supported by the metal tube 38. In this case, the metal cylinder 38 which is the inclination prevention means 36 is
Since it is attached at a right angle to the slide plate 24 that moves in opposition to the axis of the plastic inner layer 14 at a right angle,
The metal cylinder 38 can always slide in alignment with the plastic inner layer 14, so that the reinforcing metal tube 22 inserted while being supported by the metal cylinder 38 is aligned and horizontal in the plastic inner layer 14. Since it is inserted into the plastic inner layer 14, it is not inserted into the plastic inner layer 14 in an inclined state.

In the illustrated embodiment, the pushing drive means 26 comprises a hydraulic cylinder 40 fixedly attached to the central portion of the fixed plate 34. The piston rod of the hydraulic cylinder 40 is connected to the center of the slide plate 24, as shown in FIG. This hydraulic cylinder 40 has its piston rod extended to extend the slide plate 2
4 is pushed in the inserting direction of the reinforcing metal tube 22.

Since the central portion of the slide plate 24 is pushed by the hydraulic cylinder 40, it is rare that the slide plate 24 slides in an inclined manner with respect to the plastic inner layer 14, but the three sets of nuts 30A, 30B, 30C. When there is a difference in the tightening position of each of them, they may be tilted. Therefore, in this case, the metal cylinder 38 mounted at a right angle to the slide plate 24 and the plastic along the metal cylinder 38. The reinforcing metal tube 22 inserted inside the inner layer 14 may also be inserted at an angle. In this case, each nut 30
It is possible to prevent the reinforcing metal tube 22 from being inclined and inserted by adjusting the tightening position of the slide plate 24 so that the entire surface of the slide plate 24 is pressed uniformly.

Next, the use state of the assembling apparatus 10 of the present invention will be described. First, as shown in FIGS. 1 and 2, the plastic inner layer 14 is penetrated and fixed to the holding metal fitting 16. In this case, in order to facilitate the insertion of the reinforcing metal tube 22, the inner circumference of the end of the plastic inner layer 14 is preliminarily processed into a tapered shape as shown in FIG. Further, as shown in FIG. 1, a heat-resistant tape 42 having a smooth surface is overlapped and wound around the outer periphery of the portion of the plastic inner layer 14 into which the reinforcing metal tube 22 is inserted without any gap. Thereafter, in order to facilitate the insertion of the reinforcing metal tube 22, the heat resistant tape 42 is heated from above with a heating means such as a dryer 44 as shown in FIG. The heat-resistant tape 42 is wrapped in order to prevent the plastic inner layer 14 from being excessively heated and being oxidized, dissolved, or deformed.
Polytetrafluoroethylene is preferably used as the heat-resistant tape 42, but any tape having a melting point higher than that of the material of the plastic inner layer 14 may be used.

Next, as shown in FIG. 1, the entire portion of the plastic inner layer 14 wound with the heat resistant tape 42 is uniformly heated by a dryer 44. Therefore, since the plastic inner layer 14 is heated via the heat resistant tape 42, the surface of the plastic inner layer 14 is not oxidized or melted. Further, since the heat-resistant tape 42 has a smooth surface, the surface of the plastic inner layer 14 is also smooth, and does not cause a sealing failure or the like. It is desirable to use the dryer 44 as the heating means. The heating by the dryer can mitigate the oxidization of the heating portion as compared with the direct flame heating of the burner, and the heating by the dryer is very large. Because it does not require preparation time

In this way, the plastic inner layer 14 is heated, and the surface temperature of the plastic inner layer 14 becomes 50%.
When the temperature rises to about 0 ° C., the vicinity of the end of the plastic inner layer 14 is intensively uniformly heated in the circumferential direction so that the reinforcing metal tube 22 can be easily inserted, and the vicinity of the end is made flexible.
The surface temperature near the edge of the plastic inner layer 14 is 60
When the temperature rises to about 0 ° C., the hydraulic cylinder 40 is extended and the slide plate 24 is slid, and as shown in FIG. 2 (A), the reinforcing metal pipe 22 is slowly moved together with the metal cylinder 38 which is the inclination preventing means 36. Insert into the inner plastic layer 14. If the reinforcing metal tube 22 is not aligned with the plastic inner layer 14, contract the hydraulic cylinder 40 and position the slide plate 24 so that the reinforcing metal tube 22 is aligned with the plastic inner layer 14 by adjusting the nuts 30A, 30B, 30C. adjust. While adjusting the position of the slide plate 24, these nuts 30 are loosened. With the reinforcing metal tube 22 aligned with the plastic inner layer 14, after inserting the tip of the reinforcing metal tube 22 into the plastic inner layer 14, the nut 30 on the insertion side of the slide plate 24 is inserted.
The hydraulic cylinder 40 is extended in a state of being sufficiently forwarded to push the reinforcing metal tube 22 into the plastic inner layer 14 while expanding the diameter of the plastic inner layer 14 as shown in FIG. 2 (B). .. After the pushing is completed, when the plastic inner layer 14 is cooled, the assembly device 10
Remove.

In the assembling apparatus 10 of the present invention, the frame 20
It is important that the number of guide rods 18 is 3 or more. If the number of the guide rods 18 is two, it is difficult to accurately adjust the slide plate 24 so as to be perpendicular to the axis of the plastic inner layer 14, but if the number of the guide rods 18 is three or more, the slide plate 24 is provided.
Can be adjusted with high accuracy so that is perpendicular to the axis of the plastic inner layer 14. However, the guide rod 1
If the number of 8 is too large, the adjustment becomes complicated. Therefore, the number of 3 or more and the smallest possible number are preferable.

In the illustrated embodiment, the inclination preventing means 3
Although the hollow metal cylinder 38 is used as 6, a metal rod may be used. Further, although the hydraulic cylinder 40 is used as the pushing drive unit 26, a screw drive mechanism may be used.

[0022]

According to the present invention, as described above, since the inclination preventing means is attached at a right angle to the slide plate into which the reinforcing metal tube is pushed, and the plastic inner layer is held by the holding metal fitting, the reinforcing metal is used. Since the pipes are aligned and pushed into the plastic inner layer horizontally without being displaced, the reinforcing metal pipes are evenly inserted without tilting, and the reinforcing metal pipes are mechanically inserted through the slide plate by the pushing drive means. Since it is inserted, there is a real advantage that work can be done in a short time.

[Brief description of drawings]

FIG. 1 is a top view of an apparatus for assembling a terminal fitting of the present invention.

FIG. 2 is a sectional view sequentially showing a state in which a reinforcing metal tube is inserted using the assembling apparatus of the present invention.

FIG. 3 is a right side view of the terminal fitting assembling apparatus of the present invention.

FIG. 4 is a front view of the collar plate of the holding metal fitting used in the present invention.

FIG. 5 is a front view of a slide plate used in the present invention.

FIG. 6 is a top view of a slide plate used in the present invention.

FIG. 7 is a perspective view in which an end portion of a fluid transportation pipe to which a terminal fitting is attached by the assembling apparatus of the present invention is exposed stepwise.

FIG. 8 is a cross-sectional view of a fluid transport pipe that does not have a spiral pipe to which a terminal fitting is attached.

FIG. 9 (A) is a perspective view showing a state in which a reinforcing metal pipe is inserted in the conventional technique, and FIG. 9 (B) is an enlarged cross-sectional view of an inserted portion of the reinforcing metal pipe in the conventional technique.

[Explanation of symbols]

 10 Fluid Transport Pipe Terminal Metal Fitting Assembly Device 12 Fluid Transport Pipe 14 Plastic Inner Layer 16 Retaining Metal Fitting 18 Guide Frame 20 Frame 22 Reinforcing Metal Pipe 24 Slide Plate 26 Pushing Drive Means 28 Bolt 30 Nut 32 Collar Plate 34 Fixing Plate 36 Tilt Prevention Means 38 Metal cylinder 40 Hydraulic cylinder 42 Heat resistant tape 44 Dryer

Claims (1)

[Claims] 1. A plastic inner layer inside the end of the plastic inner layer of a fluid transport pipe comprising a plastic inner layer, a reinforcing layer provided on the plastic inner layer, and an anticorrosion layer provided on the reinforcing layer. A device for assembling a terminal fitting of a fluid transportation pipe, wherein a metal fitting for reinforcement having an outer diameter larger than the inner diameter of the fluid transportation tube is inserted to assemble the terminal fitting at the end of the fluid transportation pipe. And a frame body composed of a holding metal member and three or more guide rods attached to the holding metal member so as to extend in the longitudinal direction of the plastic inner layer, and slidably held by the guide rod of the frame member for reinforcement. A slide plate that holds a metal tube and pushes the reinforcing metal tube into the plastic inner layer for insertion, and a method of inserting the reinforcing metal tube held by the frame into the reinforcing metal tube. Push-in driving means for pushing in the direction, and the inclination preventing means inserted into the inside of the reinforcing metal tube to prevent the reinforcing metal tube from tilting is attached to the slide plate at a right angle. Device for assembling terminal fittings for fluid transportation pipes.