JP2002039443A - Sliding liner for pipe band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the rusting by the abrasive seat water, of a liner mounted between a pipe of a liquid transporting ship and a frame in expansion and contraction of the pipe caused by the change of a temperature. SOLUTION: When the pipe 2 mounted to the exposure of a ship by an U band 4 is expanded and contracted by a temperature of the liquid flowing in the pipe and a temperature of the outside air, or when a hull is bent or twisted by sagging or hogging, a thumb tack-shaped liner formed by molding a hard resin is used as the liner 3 mounted between the pipe 3 and the frame 1 to reduce a contact area between the thumb tack-shaped liner 3 and the pipe 2 and to minimize the frictional resistance, and allowed to follow the pipe 2, further a contact area between the thumb tack-shaped liner 3 and the frame is minimized, a projection for fixing is formed on a lower face of the liner 3, and a hole 7 for fitting the projection is also used as a drilled hole 7 for discharging the sea water impregnated between the liner 3 and the frame 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liner provided between a pipe and a base when a pipe such as a cargo pipe of a liquid transport ship expands and contracts due to a temperature change.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a gantry 31 is provided, and a pipe 3 is provided above the gantry 31 as shown in FIG.
2 was plumbed.

[0003] In the case of carbon steel, depending on the linear expansion coefficient of the material, the pipe 32 has a temperature of ± 6 with respect to a pipe length of 100 m.
It expands and contracts about ± 60 mm at 0 degree change. In addition, stainless steel has a coefficient of linear expansion that is nearly twice, and under the same conditions, about ±
It expands and contracts by about 110 mm.

The pipe 32 is connected between devices or valves (not shown). In order to avoid vibration and other external forces and mechanical damage, a pipe 31 of a predetermined size is mounted on the base 31 via a liner 33. 34 and nut 35.

[0005] The gantry 31 is usually formed by painting carbon steel, and a gate horse is formed using an equilateral angle iron, and a pipe 32 is laid on the hull.

[0006] In the gantry 31, drill holes 36 are formed in pairs at predetermined intervals of the U-band 34 according to the diameter of the pipe 32.

As shown in FIG. 2A, the liner 33 is a resin-based flat liner of about 10 mm, and has holes 38 at predetermined intervals on a longitudinal center line.

Further, the mount 31 has a pair of drill holes 37 inside the drill holes 36 at the same interval as the holes 38 of the liner 33.

A nut 3 is provided on the lower surface of the through hole 37 of the gantry 31.
9 was welded, and a bolt 41 having the same diameter as the nut 39 was screwed via a spring washer 40.

The screwed bolt 41 projects on the upper surface of the gantry 31, the hole 38 of the flat liner 33 is fitted, and the liner 33 is fixed.

A pipe 3 is provided substantially at the center of the liner 33.
2, a threaded portion of a U-band 34 having a predetermined size penetrates a through hole 36 and is fastened by two nuts 35. A predetermined gap is maintained between the outer periphery of the pipe 32 and the inner periphery of the U-band 34. I was

[0012]

As described in the prior art, the pipe expands and contracts by several tens of mm depending on the temperature of the liquid flowing through the pipe. Therefore, there is a problem in the construction that it takes time to perform the welding work of the nut, the fire work, the touch-up of the paint, the drilling for the penetration of the bolt, and the screwing of the bolt.

Further, a flat liner having a fixed area is required to receive a fixed load and be fixed. Since the flat liner has a large contact area with the pipe, the frictional force is large. However, there is a problem that the force is transmitted up to

Further, since the flat liner has a large contact area with the gantry, it is painted, but impregnated with seawater, and the temperature of the contact surface is affected by the temperature of the liquid in the pipe. However, it is not a place where maintenance can be easily performed, and the environment of the contact surface is poor, causing problems such as causing rust.

The present invention has been made in view of the above-mentioned inadequacies of the prior art, and an object of the present invention is to use a thumbtack-shaped liner molded from a hard resin. It facilitates construction, has a small contact area with the pipe, is easy to slide, and has a small contact area with the gantry, so that the seawater impregnated on the contact surface is drained from the drill hole to prevent rust.

[0016]

In order to achieve the above object, the present invention provides a sliding liner for a pipe band in which a pipe is fastened to an upper portion of a base with a U-band and a nut of a predetermined size via a liner. , The base is provided through the drill hole at the approximate center of the pair of drill holes,
The liner is a thumbtack-shaped liner having a disk-shaped upper part and a column-shaped leg protruding at the center of the lower surface of the disk, and the liner's foot is inserted into a drilled hole in the center part, fixed, and a pipe is laid.
It is fastened with a U band and a nut.

The upper surface of the upper disk of the liner has a gentle spherical surface.

Several continuous grooves are provided on the lower surface of the upper disk of the liner and on the outer periphery of the legs.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION
If the pipe attached by the bunt expands and contracts due to the temperature of the liquid flowing in the pipe and the outside air temperature, or if the hull bends or twists due to sagging or hogging, a liner provided between the pipe and the gantry Using a thumbtack-shaped liner molded from hard resin,
The contact area between the pushpin type liner and the pipe is reduced to minimize the frictional resistance so that the pipe follows the pin, and the contact area between the pushpin type liner and the pedestal is minimized, and a stationary projection is provided on the lower surface of the liner. And a hole for fitting the projection and a drill hole for draining seawater impregnated between the liner and the gantry are also used.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG.
A pipe 2 fastens a liner 3 to the upper part of the gantry 1 with a U-band 4 and a nut 5 of a predetermined size.

The gantry 1 is usually formed by painting carbon steel, and a gate horse is formed by using an equilateral angle iron, and a pipe 2 is laid on a hull.

In the gantry 1, drill holes 6 are formed in pairs at predetermined intervals of the U-band 4 in accordance with the diameter of the pipe 2.

The mount 1 is provided with a through hole 7 at a substantially central portion of the pair of through holes 6.

The liner 3 is, as shown in FIG.
A cylindrical leg 3L having a diameter of about 30 mm and a thickness of about 10 mm, and having a diameter of about 10 mm and projecting several mm.
In the center of the lower surface of a hard resin-made, pushpin-shaped liner (anti-wear).

The projection on the lower surface of the liner 3 is inserted into the through hole 7 of the gantry 1, the pipe 2 is piped, the threaded portion of the U bolt 4 of a predetermined size passes through the through hole 6,
Are screwed from above and below, and are laid with a predetermined gap between the outer periphery of the pipe 2 and the inner periphery of the U-band 4.

Although the liner 3 has a basic shape of a thumbtack, as shown in FIG. 1B, it has a gentle spherical surface 3b on the upper surface of the upper disk to reduce the contact area with the pipe 2. It is to try.

As an example, as shown in FIG. 1C, the liner 3 is provided with several cut grooves 3d continuous with the lower surface 3C of the upper disk and the outer periphery of the leg 3L.
C and the upper surface of the gantry 1 are configured to guide the impregnated seawater and drain the water through the drill hole 7.

[0028]

Since the present invention is configured as described above, the following effects can be obtained. The present invention, by using a thumbtack type liner, facilitates the construction of plumbing work, less friction resistance with the pipe, does not apply force to the gantry, furthermore, the contact area between the liner and the gantry is small,
The seawater impregnated on the contact surface is also drained from the drill hole to prevent corrosion of the gantry.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a pipe support according to the present invention. (A) schematically shows a thumbtack-shaped liner in a perspective view. (B) is a second embodiment of the thumbtack-shaped liner, and (c) schematically illustrates a third embodiment of the thumbtack-shaped liner.

FIG. 2 is a schematic sectional view of a conventional pipe support. (A) is a schematic perspective view of a flat liner.

[Explanation of symbols]

 Reference Signs List 1 base 2 pipe 3 liner 3b spherical surface 3c bottom surface 3d cut groove 3L leg 4 U bolt 5 nut 6 drill hole 7 drill hole

Claims (3)

[Claims] 1. A pipe band sliding liner in which a pipe is fastened by a U-band and a nut of a predetermined size via a liner on an upper portion of a mount, wherein the mount has a drill hole substantially at the center of a pair of drill holes. The liner is a thumbtack-shaped liner having an upper part of a disk and a columnar leg protruding at the center of the lower surface of the disk, and a liner leg is inserted into a drilled hole in the center and fixed, and a pipe is placed. And lay U
A sliding liner for a pipe band, which is fastened by a band and a nut. 2. A sliding liner for a pipe band according to claim 1, wherein the sliding disk has a gentle spherical surface on the upper surface of the upper disk of the liner. 3. The sliding liner for a pipe band according to claim 1, wherein several continuous cut grooves are provided on the lower surface of the upper disk of the liner and the outer periphery of the leg.