JPH0246388A - Water injecting method into water feed pipe - Google Patents

Abstract

PURPOSE:To reasonably inject water into a water feed pipe by connecting the tip of the coil-wound water feed pipe to a water tank installed between a hauling machine at a high position and the water feed pipe and injecting water into the water feed pipe dropped from the hauling machine. CONSTITUTION:A plastic water feed pipe 4 delivered from a production line is coil-wound in sequence through a hauling machine 5. The tip of the plastic water feed pipe 4 is connected to a water tank 1 installed at the position between a coil-wound plastic water feed pipe 3 and the hauling machine 5 via an optional water injecting pipe 2, water is injected into the coil-wound plastic water feed pipe 3 in sequence. As a result, water can be injected into the water feed pipe very reasonably and surely when the water feed pipe is coil-wound at the time of production of the water feed pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for injecting water into a water pipe installed on the seabed or under water.

[Prior Art and Problems to be Solved by the Invention] When a water pipe made of rubber or plastic is laid on the seabed or the bottom of the water, water is poured into the water pipe while it is being laid.

However, in the above method, there are cases where water injection becomes difficult due to twisting or collapse of the water pipe that occurs when the water pipe is installed. Furthermore, there was the trouble of having to prepare a water injection device on-site. Taking these points into consideration, a method has already been proposed in which water is injected into the water pipe before installation.

An object of the present invention is to provide a useful water injection method for injecting water into a water pipe in advance before installation.

[Means for Solving the Problems] The gist of the present invention is that when a water pipe is coil-wound through a hauling machine installed at a high position, a water tank is installed at a height between the coiled water pipe and the hauling machine. The purpose is to install a water pipe, connect the tip of the water pipe to the water tank, and sequentially inject water into the coiled water pipe.

[Function] According to the above configuration, since the water tank is higher than the coiled water pipe, water is sequentially poured into the water pipe at the same time as the water pipe is coiled. Further, since the hole machine that sends out the water pipe is provided at a higher position than the water tank, there is no fear that water will flow out beyond the hole machine, and the water pipe can be reliably filled with water.

[Example] An example of the method of injecting water into a water pipe of the present invention will be described based on the drawings. A plastic water pipe 4 sent out from a production line is sequentially wound into a coil through a hole machine 5. At this time, the tip of the plastic water pipe 4 was connected to the water tank 1 installed at a position between the coil-wound plastic water pipe 3 and the hauling machine 5 via an arbitrary water injection pipe 2, and the coil-wound plastic water pipe 4 was Water is sequentially poured into the plastic water pipe 3. 6 is the water level in the water tank, and 7 is the water level in the water pipe.

[Effects of the Invention] As explained above, according to the method of injecting water into a water pipe of the present invention, it is possible to very rationally and reliably inject water into a water pipe by taking into account the time of winding the water pipe coil during manufacturing of the water pipe. Water can be poured into the tank. Furthermore, according to the water pipe filled with water in advance,
The water pipe is almost never twisted or deformed during installation, and it is also no longer difficult to install the water pipe due to buoyancy when it is installed on the seabed or under water.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the method of injecting water into a water pipe according to the present invention. 1: Water tank, 2: Water injection pipe, 3: Coiled plastic water pipe, 4 Niblast water pipes, 5: Holing machine, 6: Water surface inside the water tank, 7: Water surface inside the water pipe.

Claims (1)

[Claims] 1. Rubber and
When a water pipe made of plastic or the like is dropped downward and wound into a coil one after another, the tip of the coiled water pipe is connected to a water tank installed at a position between the hole machine and the coiled water pipe. A method for injecting water into a water pipe, which is characterized by sequentially injecting water into a water pipe that is dropped from a hauling machine.