JPS60191972A - Winding method for oil feed hose - Google Patents

Abstract

PURPOSE:To prevent joint parts of a hose from being deformed to an extreme by winding the hose while supplying, from a starting end of reel winding, air to the hose used for feeding oil from an oil tanker to an onshore tank to give prescribed internal pressure to the hose. CONSTITUTION:An oil tanker 1 and an onshore facility are separated away by about 500m, and they are connected with each other through an oil resistant delivery hose 4. The hose 4 is removably connected with a wire rope 22 by means of a coupling tool 20, whereby load applied tot he hose 4 is received through the wire rope 22. The wire rope 22 is stretched between a winch of the onshore facility and a winch 26 of the oil tanker 1 whereby tensile force needeed to hold the hose 4 is given. The hose 4 is wound around a reel device 30, while the wire rope 22 is wound by the winch 26. A pressure application device 34 leads air reduced in its pressure in a pressure reducing device 36 to piping 37 and a connection slot 38 through a rotary seal provided on a shaft end of a erel 32, and the air is supplied to the hose from a starting end 4a of winding to provide prescribed internal pressure thereto 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for rolling up an oil transfer hose that can be used when transferring oil from an oil tanker to a land tank or the like.

(Prior art) Recently, the consumption of petroleum and other oils on remote islands has increased, and although it has become necessary to store them in tanks on land, oil tankers are not berthed. The problem is that the ports that are suitable for oil production already serve as ports for fishing boats, and that building new oil bases and associated port facilities requires a huge amount of money.

In areas where the ship must be moored several hundred meters away from the quay, a submarine hose or fixed pipe may be laid on the seabed, and an SBM (single point buoy) device may be installed at the tip of the pipe to connect it to the oil tanker. When transferring oil, a method is used in which only the submarine hose is brought to the surface and connected to the oil tanker, but the most common method is to install a pier that extends to the berthing point of the oil tanker and connect the hose or loading arm on the pier. The method of connecting it to an oil tanker is now widely adopted.

However, the topography and sea conditions of the pond bottom. When it is necessary to carry out oil transfer work in places where it is difficult to install piers or lay marine hoses due to celestial events, many difficulties arise. Much less,
If the problem is to reduce the amount of oil fed per hour or to feed oil as quickly as possible, it will involve even more difficult practical considerations.

In other words, even if an oil transfer hose is used to connect an oil tanker to an onshore facility that is several hundred meters long (for example, 500 meters), the first step is to use high-pressure oil transfer (use field; 1oKq-f).
It is necessary to solve the problem of how to store an oil supply hose that can withstand the above-mentioned temperatures without damaging it.

On the other hand, a method of winding up the oil transfer hose using a reel has been known. However, this method has been applied to relatively short (around 100 meters) oil supply hoses, and is not applicable to high-pressure oil supply hoses that are several hundred meters long for the following reasons. It was considered.

■ Currently, the production limit for so-called delivery hoses that can withstand working pressures of 10 Kg-17 cm2 is 20 meters, so they must be connected with a large number of joints, but these joints are generally made of stainless steel. Since it has a fixed axial length, it does not fit well with the reel surface, and excessive deformation of the hose occurs at the boundary between the joint and the hose.

■ For example, a reel for winding up a delivery hose with an inner diameter of 5 inches and a length of 5 (20 m) in one stage has a shaft length of 7 m, which requires a large amount of equipment and manufacturing costs. In practice, it is necessary to wind the hose in two or three stages, and the above-mentioned excessive deformation of the hose becomes more pronounced, resulting in rapid damage to the hose.

(Purpose) The present invention was devised under the new challenge of connecting <:' sections of several hundred meters with high-pressure oil supply hoses. To provide a method for winding a high-pressure oil supply hose connected with a joint onto a reel without damaging it.

(Structure) In order to achieve this purpose, air is supplied from the reel winding start end of a high-pressure oil supply hose connected with multiple joints, and the oil supply hose is connected to the reel while applying a predetermined internal pressure to the oil supply hose. It was configured to be rolled up.

Here, the predetermined internal pressure applied to the oil supply hose refers to a pressure that does not cause the oil supply hose to extremely lose its original shape due to external force and does not hinder winding on a reel.

With this configuration, the air supplied into the oil supply hose provides a force to maintain the original shape of the hose, thereby preventing extreme deformation of the hose. This allows HJ to perform two-stage or three-stage winding without damaging the hose, and the axial length of the reel can be known, making it ideal for installation spaces such as medium- and small-sized oil tankers. In addition, high-pressure oil transfer hoses can be used to transfer oil at the same pressure and in the same amount as the commonly used hose cargo handling between onshore facilities and oil tankers. It is possible to improve the oil delivery method without making a huge capital investment in facilities.

Embodiments of the present invention will be described below with reference to the drawings.

(Example) FIG. 1 shows the oil transfer situation between an oil tanker 1 and land facilities including land tanks 2.

The oil tanker 1 and the onshore facility are spaced approximately 500 meters apart, and are connected by an oil-resistant delivery hose 4. Blood 1 oil delivery hose 4 here is reinforced fiber, rubber! With lFi layer body, working pressure 10 to 9 f/
Each hose element 6 having a diameter of 4 to 6 inches and a length of 20 meters is connected by a joint 8 to obtain the required length and to enable high-pressure oil delivery.

As shown in FIG. 2, the joint 8 includes a cylindrical body 10 that is tightly fitted into the inner surface of the hose element 6, and a rotary operating body 14 that is provided at the exposed end of the cylindrical body 10 via a transfer element 12. and a connecting pipe 16 that is screwed into the inner surface of the rotary operating body 14.
The outer diameter of the hose element 6 is made to be as similar as possible to the outer diameter of the hose element 6. 18 indicates the backing.

When connecting between the oil tanker 1 and the onshore facility, lt
T? The +h delivery hose 4 is detachably attached to a wire rope 22 through a connector 20, so that the load applied to the hose 4 is received by the wire rope 22.

The wire rope 22 is a wire winch 24 of the land facility.
The hose 4 is stretched between the wire winch 260 and the wire winch 260 disposed on the oil tanker 1, and the necessary tension is applied to hold the hose 4 from the effects of tidal currents, wind force, etc. during oil transfer. It is preferable to attach the 20 connectors to the joint 8.

The oil-resistant delivery hose 4 is wound around an auto-tension type reel device 30 installed on the oil tanker 1, and on the other hand, a wire rope 2211-1. Similarly, it is wound around a wire winch 26 installed on the oil tanker l.

FIG. 3 shows the arrangement of the auto-tension type reel device 30 and the wire winch 26 on the oil tanker 1. The reel device 30 is interlocked with the wire winch 26.

FIG. 4 shows an example of a control circuit for an auto-tension type steel system fff3°. In No. 4, 1, 100 is a reel drive hydraulic motor, and in the figure, the arrow around the counterclockwise direction indicates the rotation direction of hose feeding.

102 is a hydraulic pump. A relief valve 104, a pressure setting means 106, a switching valve 108, and a hydraulic circuit protection means 110 are interposed between the hydraulic pump 102 and the hydraulic motor 100. It consists of a feeding output setting 106B.

The relief valve 104 has a function as a main safety valve and sets the maximum output of the pressure oil in the circuit.

The auto-tension type reel device 30 applies a tension of about 0.2 to 0.3 tons to the hose 4, which has an allowable tensile force of a little over 1 ton. The oil pressure required for this is adjusted by the hose winding pressure setting valve 106A. The fatigue of the hose 4 is determined by the amount of slack in the hose 4 caused by winding up the wire rope 22 attached to the hose 4 with the wire wiener 26.
It is done with great tension. During this winding operation, if winding occurs due to incorrect operation or failure of the wire winch 26, bypass the pressure oil from the hydraulic pump 102 and the oil storage tank as shown by the arrow in Fig. 4. Reverse rotation of the hydraulic motor 100 (rotation in the hose delivery direction) is allowed so that the maximum tensile force applied to the hose 4 is within 0.5 tons. This is intended to prevent damage due to excessive tension being applied to the hose 4. Figure 4 shows the flow of pressure oil in this state with arrows.

A hose pressurizing device 34 is provided on the reel 32.

The hose pressurization device 34 uses a decompression device 36 to guide air at a pressure of 1 or 2/cm' to the piping 3L connection port 38 through a rotary seal provided at the 1111 end of the reel 32, and then connects the hose with 40 turns. Air is supplied to the hose 4 from the starting end 4a, and a predetermined internal pressure is applied to the hose 4. 3
9 indicates the master of A&Q.

In the figure, 40 indicates an auto shifter, and 42 indicates a hose guide. This hose guide 42 is designed to prevent excessive bending of the hose 4 itself due to vertical movement due to gravity when the hose is wound up and expanded, or lateral pressure from side pipes such as tidal currents and wind power. Rollers 44, 44.・・・
... is provided in the structure to ensure the sliding of the hose 4. The hose guide 42 is sloped so that the hose 4δ slides downward under its own weight from the ship, and has a shape that widens at the end to alleviate horizontal movement caused by tidal currents, wind force, etc. It is preferable to do so.

When winding the hose 4 onto the reel 32, air is supplied to the hose 4 by the hose pressurizing device 34, and the winding is performed while applying an internal pressure of approximately I Kyiα2 here. At this time, as shown in FIG. 5, just before the joint 8 part of the hose 4 is seen by the joint 8 part, hose bending prevention saddles 50 are attached to both sides of the joint 8 part, and the connection end of the hose element 6 is It is preferable to provide partial support.

The hose bending prevention saddle 50 consists of a main body 52 having elasticity in the compression direction and bands 54 extending from both sides of the main body 52 in the width direction. This allows for one-touch attachment and detachment to the hose 4.

In this way, it is preferable that the hose pressurizing device 34 always apply an internal pressure of approximately I Ky/α2 to the edge where the hose 4 has been wound onto the reel 32 to prevent the hose 4 from deforming.

(Effects) Since the present invention has the above-described configuration, it is possible to wind the hose onto a reel while preventing extreme deformation of the hose, especially at the joint portion. Furthermore, since it is possible to wind the reel as many as 72 times, the reel can be installed even in oil tankers where installation space is limited, and it is possible to eliminate the need for huge capital investment in pier facilities and the like. It still has the advantage of being able to refuel other ships using high-pressure oil.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing the oil transfer situation between an oil tanker and an onshore facility, Figure 2 is a partial sectional view of a delivery hose, and Figure 3 is an auto-tension type reel device installed on the oil tanker and A schematic diagram without showing the installation of the wire winch. Figure 4 is a control circuit diagram of the auto-tension reel device. Figure 5 is a part of the reel winding of the delivery hose with the hose bending prevention IJ and saddle attached to the joint. FIG. 4... Delivery hose (oil supply hose) 8...
...Coupling 32 ...Reel 34 ...Hose pressurization device patent applicant Ueno Transport Co., Ltd.

Claims (1)

[Claims] (1) Air is supplied from the reel winding start end of the high-pressure oil supply hose, which is connected with a number of joints, and the oil supply hose is wound onto the reel while applying a predetermined internal pressure to the oil supply hose. How to take care of a life-saving oil hose.