KR20110000816A - Hdpe complex pipe with anticorrosive wire rope inserted and method for installing thereof - Google Patents

Abstract

PURPOSE: An HDPE(High-Density Polyethylene) complex pipe fitted with an anticorrosive wire rope and an installation method thereof are provided to transport sea water of low temperature to the land with the low temperature characteristic maintained. CONSTITUTION: An HDPE complex pipe is inserted comprises an HDPE pipe(11) and an anticorrosive wire rope(12). HDPE complex pipes of specified length are arranged from the land to the sea to be connected to form a pole pipe. The wire rope is provided corresponding to the length of the HDPE pipe and inserted in the HDPE pipe in order to reinforce the weight and strength of the HDPE pipe. At the time of connection, the HDPE pipes and the wire ropes are connected with the HDPE pipes and the wire rope, respectively.

Description

HDPE COMPLEX PIPE WITH ANTICORROSIVE WIRE ROPE INSERTED AND METHOD FOR INSTALLING THEREOF}

The present invention relates to a HPDPE pipe composite pipe and a method of laying the same, in which a corrosion-resistant wire rope is injected, and more particularly, a basic HDPE pipe is used to transfer low temperature seawater to the land while maintaining its low temperature characteristics. The present invention relates to an HPDPE pipe composite tube and a method of laying the same, in which an improved corrosion resistant wire rope is injected to reinforce weight and strength by using a corrosion resistant wire rope.

As is well known, the ocean has low temperature and eutrophic properties throughout the year at a certain depth above the sea, and the seawater having low temperature and eutrophicity is useful for various industrial fields such as improvement of basic productivity, development of cold ocean bioculture and seawater temperature difference. Can be.

The prerequisite for utilizing such low temperature seawater is that the low temperature seawater being taken in must be transported in large quantities to the land without raising the water temperature.

In order to preserve the characteristics of low temperature seawater while transporting large quantities to the land, the use of HDPE pipes is essential. In order to manufacture HDPE pipes and install them on the sea while minimizing costs, suitable manufacturing techniques and laying methods are required.

In particular, large diameter pipes with high diameter, weight and strength are very difficult and expensive to manufacture, making them an obstacle to industrial development.

In other words, although general seawater is taken out by a hose or pipe, in order to use seawater having low temperature characteristics, use of a low temperature conductivity HDPE pipe is essential, but since HDPE pipe has a specific gravity of 0.95, it is floating in seawater. Because of this, it is impossible to install HDPE pipe alone, so the weight must be increased separately.

In addition, since HDPE pipes are weaker than steel pipes, there is a risk of breakage if a high tension occurs during installation.

In order to solve this difficulty, a wire rope is fixed to the outside of the HDPE pipe by a band to make a composite pipe. In this case, there is a disadvantage that may affect fishing activities or anchors.

Alternatively, a concrete block may be manufactured and installed outside the HDPE pipe, which may cause the HDPE pipe to break due to the concentrated mass of the concrete block.

Alternatively, in Japan, there is an example of fabricating an integrated composite pipe around an iron plate or iron core outside the HDPE pipe. In this case, however, the price is tens of times higher than that of general HDPE pipe. In addition, in the case of mobilizing the chartered ship, the cost of renting the chartered ship is also expensive, which is economically disadvantageous.

Accordingly, there is an urgent need for the development of a composite pipe capable of reinforcing large diameter HDPE pipes while minimizing costs, and the development of technology for the installation technique thereof.

The present invention was created in view of the above-mentioned problems in the prior art, and is a new technology for more efficiently and collectively processing the production of a composite pipe and its installation necessary for taking in low temperature seawater. The main challenge is to provide a method for manufacturing and laying intake pipes so that the pipes can be installed safely and economically from the marine environment and perform their functions.

More specifically, first, the HDPE pipe is increased in weight so that it can sink in seawater, where the injection of seawater within the pipes sinks and the air injects increases the appropriate weight to rise and the strength of the HDPE pipe. Provide composite pipes to allow reinforcement.

Second, it provides manufacturing and laying methods to install reinforced composite pipes on the sea floor while minimizing time and cost without mobilizing separate laying ships.

Third, the wire rope injected inside the HDPE pipe provides a technique for preventing corrosion to prevent corrosion by sea water.

The present invention as a means for achieving the above object, in the composite pipe used to take in low temperature seawater; A HDPE pipe arranged from land to sea so that a plurality having a predetermined length are connected to each other to form a long pipe; It is provided according to the length of the HDPE pipe, inserted into the inside of the HDPE pipe is installed in the wire rope to reinforce the weight and strength to the HDPE pipe, HDPE pipe is connected to each other HDPE pipe when connected, the wire rope is wire rope It provides an HPDPE pipe composite pipe injected with a corrosion-resistant wire rope, characterized in that connected to each other.

In this case, at the end of the land layer of the HDPE pipe, a pump for supplying sea water or air is further installed, so that the HDPE pipe is settled when the sea water is supplied and the HDPE pipe is floated when the air is supplied. There is this.

In addition, the wire rope inserted into the HDPE pipe is characterized in that the corrosion protection material is coated.

In addition, the corrosion preventing material is characterized in that the PE spray or rubber coating material.

In addition, in the laying method of installing a composite pipe on the sea used to take the low temperature seawater; Connecting a plurality of HDPE pipes having a predetermined length to each other to form a long pipe having a desired length; Reinforcing weight and strength of the HDPE pipe by inserting a wire rope provided to the length of the HDPE pipe into the HDPE pipe at the same time as the formation of the long pipe; A process of connecting the HDPE pipes to the HDPE pipes and connecting the wire ropes to the wire ropes during the formation of the long pipe and reinforcing the wire rope; Arranging the long-gwan formed through the above process on the sand in the vicinity of the coastline or the river flowing into the sea and then towing to the sea through a tugboat; When the towing vessel is moved to the laying position by the tugboat, the HPPE pipe composite pipe injecting the corrosion-resistant wire rope is characterized in that it comprises a process of injecting seawater into the rod to sink on the sea bottom. Provide a method.

In this case, the wire rope used in the process of inserting and reinforcing the wire rope into the HDPE pipe is characterized in that the outer surface is protected by a spray coating or coating on the outer surface.

In addition, the means for injecting seawater in the process of injecting seawater into the long pipe is characterized in that the pump installed on the land.

The present invention can be configured through the assembling process without special complicated process and cost for the sea water intake, in particular to contribute to the development and installation technology of the low water intake pipe for deep sea water intake pipe or temperature difference generation It can be applied to various industrial fields. In addition, in order to reinforce the weight and strength of a large diameter pipe, high-tech skills and expensive equipment are required, and the installation process thereof is very difficult, but the large diameter pipe can be easily reinforced through the present invention. And installable effects.

The present invention economically reinforces the HDPE pipe by using a wire rope, using a PE (polyethylene) spray to prevent the corrosion of the wire rope by seawater while injecting into the HDPE pipe to reinforce the weight and strength to produce a composite pipe In other words, it is an economical and efficient laying technique that directly assembles a composite pipe into one long pipe and lays it directly.

The present invention is to provide a HDPE pipe composite pipe, the use of low thermal conductivity HDPE pipe is essential to maintain the low temperature characteristics during transport of low temperature seawater, HDPE pipe is floating in seawater because the specific gravity is less than 1 .

This can be avoided by increasing the weight as described above, in which case concrete blocks or wire ropes are used around the HDPE pipe to increase weight, but this method is reinforced outside the HDPE pipe. Problems occur during the installation process and may interfere with fishing behavior even after installation.

In the present invention, a composite pipe is constructed by spraying the wire rope with a PE material or by injecting the wire rope, which is prevented from corrosion, into a HDPE pipe to protect the sea rope from corrosion by protecting the rubber material.

In this case, the wire rope injected therein may serve to increase the weight inside the HDPE pipe without a special coupling device, thereby contributing to increased stability.

In the process of laying the composite pipe, the HDPE pipe is not subjected to tensile force and the corrosion-resistant wire rope is subjected to the entire tensile force to solve the high tension problem occurring during the installation process.

Here, the weight of the wire rope is adjusted so that the composite pipe sinks when seawater is injected into the composite pipe, and floats when air is injected.

This corrosion-resistant wire rope is wound around the drum and installed into the HDPE pipe while injecting the composite pipe to produce a certain length, after the production of a certain length can be aligned on the sand near the shoreline for installation.

After making a new composite pipe and manufacturing the composite pipe as long as the total required length, multiple composite pipes can be connected as a single long pipe.

In addition, after being made as a single pole, it is suspended from one end and towed to the installation area.After towing to a certain length, the second towing vessel tow the composite pole and after all towings are completed. Inject the seawater into the composite pipe using a pump prepared onshore so that the composite pipe sinks on the sea bottom.

Through such a method of laying the composite pipe and composite pipe can be developed a large diameter composite pipe, it is possible to economically install a large diameter composite pipe.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is a cross-sectional view of a composite pipe in which a wire rope is prevented from corrosion by seawater in the HDPE pipe according to the present invention, and FIG. 2 is an assembly of the composite pipe by continuously connecting the HDPE pipe while releasing the wire rope according to the present invention. Figure 3 is a process diagram showing the process, Figure 3 is a plan view of the composite pipe reinforced with weight and strength in accordance with the present invention aligned on the sandy beach near the shoreline, Figure 4 is connected to all the composite pipe in accordance with the present invention by using one end of the ship Towing is a plan view, Figure 5 is an exemplary view showing a state just before laying by laying to the laying position using a plurality of tugboats connected to one, Figure 6 is injecting seawater from inside the pipe from the land in accordance with the present invention This is an example showing the state of sinking the pipe from one end.

As shown in Figures 1 to 6, the present invention relates to a reinforcement pipe and a method for installing the reinforcement pipe that can reinforce the weight and strength to the pipe for water intake, and to install the reinforced pipe in a desired position in a short time Invention.

In the present invention, the use of the HDPE pipe 11 is based on the minimization of the water temperature change in the process of taking the low temperature seawater.

However, since the HDPE pipe 11 floats in seawater, the wire rope 12 is injected into the HDPE pipe 11 as a method for increasing the weight, thereby forming the composite pipe 14.

In this case, since the wire rope 12 may be corroded by seawater, the corrosion preventing material 13 is sprayed onto the wire rope 12 so that the wire rope 12 is not directly exposed to seawater. Corrosion can be prevented by enclosing the wire rope 12.

In this case, the corrosion preventing material 13 is not limited to the spray of PE material, it is also possible to cover the wire rope 12 using a rubber protective material.

In this way, simply injecting the reinforced wire rope 12 side by side into the HDPE pipe 11 increases the weight so that the HDPE pipe 11 can sink in seawater.

In addition, even after the HDPE pipe 11 is installed on the sea bottom, the wire rope 12 serves to increase the safety of the entire composite pipe 14.

As such, the wire rope 12 reinforced against corrosion contributes to an increase in the tensile force of the composite pipe 14, and may be in the form of being pulled and towed to install the composite pipe 14 in the ocean.

In addition, a large tension is generated in the process of installing the composite pipe 14 on the sea bottom, because the HDPE pipe 11 itself is very weak to the tensile force may occur in the installation process.

In order to prevent this, the HDPE pipe 11 of the present invention may be utilized in the form of pulling or towing by using only the wire rope 12 injected therein after connecting with the wire rope 12.

As described above, although it is only one HDPE pipe 11 in appearance, the strength and weight can be increased by injecting the wire rope 12 therein, and after the pipe is installed, such as fishing work or anchor activity, etc. Benefits can be obtained that can also reduce the impact.

In addition, as shown in Figures 3 to 6, the reinforced composite pipe 14 is connected to a single pipe to a certain length, the wire rope 12 is unwinded by a length that is wound around the drum connected to the HDPE pipe 11 The composite pipe 14 may be configured to form a composite pipe 14 while continuously bonding.

In this case, when a certain length, for example, 500m composite pipe is produced can be made in the form of connecting the next composite pipe 14 is aligned after the production.

After repeating the above process to produce all the desired length, each of the composite pipes 14 (for example, 500m) produced by each other, wire ropes 12 wire ropes HDPE pipes (11) HDPE pipes Connect to each other to make one pole.

In order to install the composite pipe 14 made of one long pipe at a time, it can be arranged on the sand near the coastline, or can be aligned with the river flowing into the surrounding sea.

After the alignment is completed, the towing ship 21 is towed from one end to the installation area for installation, in this process, the seawater should not be introduced into the composite pipe (14).

In particular, the HDPE pipe 11 should not be excessively applied by pulling the wire rope 12 in the towing process so that the tensile force is concentrated only on the wire rope 12.

After the first start of the lifting, if the predetermined length is more than the next tugboat 21 towing the composite pipe 14, and repeat the same process to finish the towing to the last part.

After the towing is completed, each tug ship 21 is ready to find and install a complex pipe to be placed.

Through the laying process such as the present invention there is an advantage that can be laid using a general vessel without a separate laying vessel.

In the installation process may be used to increase the weight while injecting seawater into the composite pipe (14).

In this process, as shown in Figure 6, using the pre-prepared pump 22 on land, by connecting the pump 22 through one end of the composite pipe 14 is installed to inject seawater.

When the seawater is injected in this way, the weight becomes heavy and the portion of the composite pipe 14 becomes heavy and sinks, and the entire composite pipe 14 is settled while the seawater is continuously injected to finish laying.

As another example, when reel pants equipped with a reel can be used, the composite pipe 14 is manufactured on land and simultaneously wound on a reel and mounted on a ship.

After mounting on the vessel, the vessel is fixed to the shoreline by connecting the composite pipe 14 produced by berthing near the shoreline to the shoreline.

Then, the ship is installed on the seabed by increasing the weight in the composite pipe 14 while installing the composite pipe 14 while releasing the reel, and at the same time injecting seawater from the land.

When the wire rope 12 protected by the corrosion protection material 13 made of PE material is injected into the HDPE pipe 11 to reinforce the weight and strength, the composite pipe can take low temperature seawater at a low budget. 14) can be manufactured, the assembly process is completed on the land, and the laying process can be performed at once, minimizing the production time and the laying time can be very economical laying method.

In addition, after the composite pipe 14 is installed, it becomes an environmentally friendly and safe laying method that can be protected from various fishing activities occurring in the ocean.

1 is a cross-sectional view of a composite pipe in which the wire rope is prevented from corrosion by seawater in the HDPE pipe according to the present invention,

Figure 2 is a process diagram showing the process of assembling the composite pipe by continuously connecting the HDPE pipe while releasing the wire rope according to the present invention,

3 is a plan view of a composite pipe reinforced with weight and strength according to the present invention arranged on a sand field near the shoreline;

Figure 4 is a plan view towing one end using a vessel after all the composite pipes are connected according to the present invention,

5 is an exemplary view showing a state just before laying by towing to the laying position using a plurality of tugboats connected to one long pole,

Figure 6 is an exemplary view showing a state to sink the pipe from one end while injecting seawater from inside the pipe from the land according to the present invention.

♧ description of the symbols for the main parts of the drawing ♧

11 .... HDPE Pipe 12 .... Wire Rope

13 .... Anti-corrosion material 14 .... Composite pipe

21..Tugboat 22 .... Pump

Claims (7)

In a composite pipe used to take cold sea water; A HDPE pipe arranged from land to sea so that a plurality having a predetermined length are connected to each other to form a long pipe; It is provided according to the length of the HDPE pipe, is inserted into the HDPE pipe is installed in the wire rope to reinforce the weight and strength to the HDPE pipe, HDPE pipes are connected HDPE pipes connected, the wire rope is connected to the wire rope is connected HDPPE pipe composite pipe injected corrosion resistant wire rope. The method of claim 1, further comprising: At the end of the land layer of the HDPE pipe is further provided with a pump for supplying sea water or air, so that the HDPE pipe is settled when the sea water is supplied, and the anti-corrosion, characterized in that configured to float the HDPE pipe in the air supply HDPE pipe composite tube with injected wire rope. The method of claim 1 or 2; The wire rope is inserted into the HDPE pipe is installed HDPPE pipe composite pipe is a corrosion resistant wire rope injection, characterized in that the coating is coated with a corrosion inhibitor. The method of claim 3; Corrosion preventing material is a pipe HDPPE composite pipe injected with a corrosion resistant wire rope, characterized in that the PE spray or rubber coating material. A method for laying a composite pipe on the sea used for withdrawing low temperature seawater; Connecting a plurality of HDPE pipes having a predetermined length to each other to form a long pipe having a desired length; Reinforcing weight and strength of the HDPE pipe by inserting a wire rope provided to the length of the HDPE pipe into the HDPE pipe at the same time as the formation of the long pipe; A process of connecting the HDPE pipes to the HDPE pipes and connecting the wire ropes to the wire ropes during the formation of the long pipe and reinforcing the wire rope; Arranging the long-gwan formed through the above process on the sand in the vicinity of the coastline or the river flowing into the sea and then towing to the sea through a tugboat; The method of laying the HPE pipe composite pipe injected with a corrosion-resistant wire rope, characterized in that configured to include the process of sinking on the sea bottom by injecting seawater into the pole when the tow is moved to the laying position by the tugboat . The method of claim 5; The wire rope used in the process of reinforcing and inserting the wire rope into the HDPE pipe is a corrosion resistant wire rope injected HDP pipe composite pipe, characterized in that the outer surface is protected by a spray coating or coating form How to install. The method of claim 5; Method for injecting seawater in the process of injecting seawater into the long pipe is a pump installed on the land, HDPPE pipe composite pipe laying method, characterized in that the pump is installed on the land.

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