JPH07298468A - Method for laying underwater line - Google Patents

Abstract

PURPOSE:To improve laying work of electric cables by sealing up the start end of a resin pressure-tight hose and floating it by self-buoyancy before moving it toward an apparatus. CONSTITUTION:The start end of a resin pressure-tight hose 11 is liquid-tight sealed. A rope 10 led from a fountaining apparatus 3 is wound around the start end of the resin pressure-tight hose 11. While being let out from shore, the resin pressure-tight hose 11 is kept floated and moved by pulling the rope 10 from the fountaining apparatus 3. The sealing means is removed and electric cables pass through the hose. Water is poured into the resin pressure-tight hose 11 from the start end or termination end, and the hose is thereby laid on the bottom 4. To perform maintenance work, air is pumped into the resin pressure-tight hose 11 from the termination end on the shore 6 side, for example. Then the resin pressure-tight hose 11 floats, which allows an operator to perform maintenance work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility method of a submarine electric line for supplying power to a load of a fountain facility mounted on a barge floating on the surface of a water such as a lake or a pond.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, a pontoon-equipped fountain device is known in which a pontoon 2 is levitated on a water surface 1 such as a lake or a pond, and a fountain facility 3 is mounted on the pontoon 2. ing. In this type of fountain device, power is supplied to the driving motor (motor) 3C of the pump 3B that supplies the fountain water to the fountain nozzle 3A, that is, the load 3C of the fountain facility 3, such as a corrugated cable laid on the bottom 4 of the water. This is done by electrically connecting the power source 7 on the land 6 side and the load 3C on the berth 2 with the underwater electric wire 5.

A conventional underwater electric line facility that supplies power to the load 3C of the fountain facility 3 is generally performed by the following procedure. That is, as shown in FIG. 12, a submarine electric wire 5 having a length relatively longer than the linear distance L from the waterside 8 such as a lake or a pond to the fountain facility 3 is prepared, and a plurality of floats 9 are arranged at appropriate intervals on the submarine electric wire 5. Attach the rope 10 and feed it from the land 6 side, and tie the rope 10 tied up at the start end to the pier 2.
The water bottom electric wire 5 is moved toward the fountain facility 3 while being pulled from the side and being floated by the buoyancy of the plurality of floats 9.

As shown in FIG. 13, after the starting end side of the water bottom electric wire 5 is pulled up and fixed on the fountain facility 3, the float 9 is sequentially removed and the water bottom electric wire 5 is gradually submerged, while landing in response to the sinking. The water bottom electric wire 5 is fed out from the 6 side, and as shown by the phantom line in FIG. 13, the water bottom electric wire 5 is bottomed on the water bottom 4 and its terminal end is fixed on the land 6 side. The load 3C of the equipment 3 is electrically connected, and the terminal end of the underwater electric wire 5 is electrically connected to the power supply 7.

However, the conventional facility method for a submarine electric line performed by the above-mentioned procedure requires a complicated work of mounting a plurality of floats 9 on the submarine electric wire 5 at appropriate intervals and a cumbersome work of removing all the floats 9. Therefore, there is a drawback that the workability of laying is extremely poor, and it is also difficult to pull up the submarine electric wire 5 that has landed on the bottom 4 to the land 6 side for maintenance or the like.

[0006]

A problem to be solved by the present invention is that the conventional facility method requires a complicated work for mounting a plurality of floats on the submarine wire at appropriate intervals and a troublesome work for removing all the floats. Workability is extremely poor. In addition, it is difficult to pull the submarine electric wire that has bottomed out to the land side for maintenance or the like.

[0007]

SUMMARY OF THE INVENTION The present invention is a facility method for a submarine power line that supplies power to the load of equipment installed on the surface of a water such as a lake or a pond, and Prepare a resin pressure-resistant hose that is relatively longer than the linear distance to the equipment, seal the starting end opening of this resin pressure-resistant hose with a sealing device, and feed it from the land side and pull it from the equipment side Move the hose in a state of being floated by self-buoyancy toward the equipment, pull up and fix the starting end side of the resin pressure hose onto the equipment, remove the sealer, and remove it from the terminal opening of the resin pressure hose. Insert the energizing cable toward the starting end opening, temporarily fix the starting end of this energizing cable on the equipment, and pour water into the resin pressure-resistant hose from at least one of the starting end and the end opening of the resin pressure-resistant hose. The terminal end of the resin pressure hose is fixed on the land side, the temporary stop at the beginning of the energizing cable is released to electrically connect to the load of the facility, and the end of the energizing cable is placed on the land side. It is characterized in that it is electrically connected to the power source, and the workability of laying is improved, and the purpose of omitting the work of pulling up the resin pressure-resistant hose and the energizing cable to the land side for maintenance etc. is achieved.

[0008]

According to the present invention, since the resin pressure-resistant hose is moved toward the equipment while being floated by the self-buoyancy force, it is necessary to perform a work conventionally required, that is, a plurality of floats at appropriate intervals. The troublesome work of mounting and the troublesome work of removing all of these floats can be omitted. In addition, by sending air into the resin pressure hose that bottoms on the bottom of the water, draining the water inside the resin pressure hose and replacing it with air to float the air, maintenance is possible. Can be secured.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the same or corresponding portions as those in the conventional example will be described by attaching the same reference numerals. First, a resin pressure-resistant hose 11 that is relatively longer than the linear distance L from the waterside 8 of the lake or pond to the fountain facility 3 shown in FIG. 1 is prepared. As shown in FIG. 2, this resin pressure-resistant hose 11 is a soft chlorinated material in which a reinforcing material 11A made of a tubular woven body of metal fibers, a tubular body of metal wire wire mesh or a tubular woven body of carbon fibers is inserted. A main body 11B made of vinyl resin and spirally wound around the outer periphery of the main body 11B.
It has a composite structure with an external reinforcement material 11C made of hard vinyl chloride resin integrated into 1B, and has excellent pressure resistance (usually 10 kg / cm ² ), wear resistance equivalent to a rubber hose,
It has the characteristics of flexibility and lightness equivalent to resin hoses.

As shown in FIG. 3, a pressure resistant hose 11 made of resin is used.
11D of the end opening of the resin is liquid-tightly closed by a sealing tool 12, and the rope 10 extended from the side of the fountain facility 3 is wound around the starting end of the pressure hose 11 made of resin, and the pressure hose 11 made of resin is landed 6
From the side, the rope 10 is pulled out from the side of the fountain facility 3, and is moved toward the fountain facility 3 while being floated by the self-buoyancy of the resin pressure resistant hose 11, as shown in FIG.

When the starting end of the resin pressure-resistant hose 11 reaches the fountain facility 3, that is, the pontoon 2, as shown in FIG. 5, the starting end side is pulled up on the pedestal 2 to be fixed 13 and the sealing device 12 is removed. Then, as shown in FIG. 6, from the end opening 11E of the resin pressure-resistant hose 11 to the start end opening 11 on the pontoon 2.
The energizing cable 5 is inserted toward D (see FIG. 5), and the starting end of the energizing cable 5 is temporarily fixed on the berth 2 as shown in FIG.

Next, water is poured into the resin pressure-resistant hose 11 from at least one of the starting end opening 11D and the terminal end opening 11E of the resin pressure-resistant hose 11 to reach the bottom of the water bottom 4 as shown in FIG. Resin pressure hose 1 as shown in 9
The terminal end of 1 is fixed 15 on the land 6 side, and then the temporary stop 14 at the starting end of the energizing cable 5 shown in FIG. 7 is released, and the starting end of the energizing cable 5 is moved to the fountain facility 3 as shown in FIG.
Load 3C, that is, the drive motor 3C for driving the pump 3B, and the power supply cable 5
Is electrically connected to the power supply 7 on the land 6 side.

According to the above procedure, power can be supplied to the load 3C of the fountain facility 3 mounted on the pier 2. Moreover, since the resin pressure-resistant hose 11 is moved toward the fountain facility 3 in a state of being floated by the self-buoyancy, it is a complicated work that has been conventionally required, that is, a complicated process of mounting a plurality of floats 9 at appropriate intervals. The work and the troublesome work of removing all of these floats 9 can be omitted. Therefore, the workability of laying the energizing cable 5 is significantly improved.

On the other hand, for maintenance of the resin pressure-resistant hose 11 and the energizing cable 5 that have bottomed on the water bottom 4, for example, as shown in FIG. 11, the resin pressure-resistant hose 11 has a terminal opening 11E on the land 6 side. From the side, a thin air supply pipe 16 is inserted to the vicinity of the deepest part of the resin pressure-resistant hose 11, and air is sent from the air supply pipe 16 into the resin pressure-resistant hose 11 to discharge the water in the resin pressure-resistant hose 11. By replacing the air with the pressure resistant hose 11 made of resin by substituting it with air, a state where maintenance or the like can be performed can be secured. That is, it is possible to omit the work of pulling up the resin pressure-resistant hose 11 and the energizing cable 5 to the side of the land 6 for maintenance or the like.

In the above embodiment, a facility method of a submarine power line for supplying power to the load 3C of the fountain facility 3 mounted on the barge 2 levitated on the water surface 1 such as a lake or a pond will be described. However, as for the load 3C of the fountain equipment 3 installed on the turret which is constructed on the water bottom 4 and exposed on the water surface 1, of course, the pier 2 or other equipment 3 installed on the turret
It is also applicable as a facility method of a submarine electric line that supplies power to the load 3C.

[0016]

As described above, according to the present invention, since the resin pressure-resistant hose is moved toward the equipment in a state of being levitated by the self-buoyancy, it is necessary to perform the work which has been conventionally required, that is, the appropriate work. It is possible to omit the troublesome work of mounting a plurality of floats at intervals and the troublesome work of removing all the floats. Therefore, the workability of laying the energizing cable is significantly improved. In addition, by sending air into the resin pressure hose that bottoms on the bottom of the water, draining the water inside the resin pressure hose and replacing it with air to float the air, maintenance is possible. Therefore, it is possible to omit the difficult work of pulling up the resin pressure-resistant hose and the energizing cable to the land side at the time of maintenance or the like.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a facility location of a submarine power line.

FIG. 2 is an enlarged view showing an example of a resin pressure-resistant hose with a partial cross section.

FIG. 3 is an enlarged cross-sectional view showing a closed state of a starting end opening of a resin pressure-resistant hose.

FIG. 4 is an explanatory view showing a state where a resin pressure-resistant hose is buoyant.

FIG. 5 is an explanatory view showing a state in which a starting end side of a resin pressure-resistant hose is pulled up and fixed on a pedestal and a sealing member is removed.

FIG. 6 is an explanatory view showing a state in which the energizing cable is inserted through the terminal opening of the resin pressure-resistant hose.

FIG. 7 is an explanatory view showing a state in which the starting end portion of the energizing cable is temporarily fixed on the ship.

FIG. 8 is an explanatory diagram showing a bottomed state of a resin pressure hose.

FIG. 9 is an explanatory view showing a state in which the terminal end portion of the resin pressure-resistant hose is fixed on the land side.

FIG. 10 is a configuration diagram showing an electrical connection state between a load of a fountain facility and a power supply.

FIG. 11 is an explanatory view showing a conventional method in which a submarine electric wire is levitated by the buoyancy of a float.

FIG. 12 is an explanatory view showing a state in which the starting end side of the submarine electric wire is fixed on the pontoon.

FIG. 13 is an explanatory diagram showing a bottomed state of a submarine electric wire.

[Explanation of symbols]

 1 Water surface 3 Fountain equipment (equipment) 3C Drive motor for fountain equipment (equipment load) 4 Water bottom 5 Power cable 6 Land 7 Power supply 8 Waterside 11 Resin pressure hose 11D Resin pressure hose opening 11E Resin pressure hose Terminal opening 12 Sealing device 13 Fixing of resin pressure hose start end side 14 Temporary fixing of energizing cable start end 15 Fixing resin pressure hose end end on land side L Linear distance from waterside to fountain facility

Claims (1)

[Claims] 1. A facility method of a submarine electric line that supplies power to a load of equipment installed on the surface of a water such as a lake or a pond, which is more than a straight line distance from the edge of the water such as a lake or a pond to the equipment. A relatively long resin pressure hose was prepared, and the starting end opening of this resin pressure hose was sealed with a sealing device and fed from the land side and pulled from the equipment side, and the resin pressure hose was floated by self-buoyancy. In that state, move toward the equipment, pull up and fix the starting end side of the resin pressure hose onto the equipment, remove the sealer, and connect the energizing cable from the terminal opening of the resin pressure hose to the starting opening. Insert it, temporarily fix the start end of this energizing cable on the above equipment, inject water into the resin pressure hose from at least one of the starting end and the end opening of the resin pressure hose to reach the bottom of the water, and E The terminal end of the power supply cable is fixed on the land side, the temporary fixing of the start end of the energization cable is released to electrically connect to the load of the facility, and the end part of the energization cable is electrically connected to the power supply on the land side. A facility method for a submarine power line characterized by: