KR20110014481A

KR20110014481A - Double insulation pipe with multi-layer

Info

Publication number: KR20110014481A
Application number: KR1020090072170A
Authority: KR
Inventors: 정민화
Original assignee: 정민화
Priority date: 2009-08-05
Filing date: 2009-08-05
Publication date: 2011-02-11

Abstract

PURPOSE: A multi-layered dual insulation pipe is provided to prevent a heat-insulation member and an outer pipe from being broken by absorbing the expansion of an inner pipe using a foamed heat-insulation member. CONSTITUTION: A multi-layered dual insulation pipe(100) comprises an inner pipe(110), a urethane heat-insulation member(130), an outer pipe(140), and a foamed heat-insulation member(120). The urethane heat-insulation member covers the inner pipe. The outer pipe covers the urethane heat-insulation member. The foamed heat-insulation member is located between the inner pipe and the urethane heat-insulation member. And the urethane heat-insulation member absorbs the expansion and contraction of the inner pipe.

Description

Double insulation pipe with multi-layer}

The present invention relates to a double heat insulation tube, and more particularly, the heat insulation material of the inner tube, the heat insulating material, and the appearance of the double heat insulation tube is made of a double of the foamed thermal insulation material of the foamed polyethylene or foamed rubber material and the urethane material, the urethane When the thermal insulation material is injected between the foam insulation and the exterior, the foam insulation is continuously injected into the space formed in the process of being inserted into the exterior, the foam insulation is completely inserted into the exterior, and the urethane insulation is also finished. It relates to a double heat insulation tube of the structure.

Generally, a pipe is a guide member for conveying an indefinite fluid. These pipes are roughly classified into steel pipes, copper pipes, cast iron pipes, and resin (plastic) pipes, and steel pipes are mainly used to transfer high-temperature fluids, and copper pipes, cast iron pipes, resin pipes, etc. Is used.

In particular, when transferring fluids sensitive to temperature changes such as cold water, hot water, steam, oil, etc., it is necessary to use pipes of excellent materials such as rust prevention, anticorrosion, heat insulation, and cold storage to increase durability and preserve the physical properties of the fluid to be transported. Can be.

In the past, the rust preventive coating was applied to the outside of the pipe to prevent rust.However, the effect of the rust preventive coating could not be achieved due to the dew condensation effect. There was an inconvenience to be done.

In particular, the conventional double heat insulating tube 10 having two tubes of inner tube and outer tube has first and second inner tubes 11 and 12 made of steel tubes, and inner tubes 11 and 12 as shown in FIGS. 1 and 2. ) Is inserted into the outer surface 13 of the high-density polyethylene material is configured to be inserted, and the inner circumference of the inner tube (11, 12) is spaced a predetermined distance so that the inner tube (11, 12) can be fixed in the outer space (13) Hard insulating material 15 hardened by injecting liquid urethane into the empty space between the spacer 14 and the inner pipes 11 and 12 and the outer face 13 provided therein, and the first and second inner pipes 11 and 12. Steel inner and outer fixed steel plates 16 and 17 were installed to prevent twisting while maintaining a constant distance therebetween.

Here, the spacer 14 is made of a soft plastic material, the coupling portion 14a of the circular ring surrounding the first and second inner pipes (11, 12), and the upper, lower, left of the coupling portion (14a) Protrudingly formed on the right side to contact the inner surface of the exterior 13, maintaining the distance between the first and second inner tubes (11, 12) and the gap between the first and second inner tubes (11, 12) and the exterior (13) It consists of the support part 14b which has a function to make.

In addition, the outer fixed steel plate 17 is connected between the first and second inner tubes (11, 12) when the connection between the inner tube (11, 12) is weak or the installation environment is poor when the double insulation tube (10) is connected Welded to maintain distance and prevent torsion.

In addition, the internal fixed steel sheet 16 has a heat generating force according to the temperature of the fluid flowing inside the first and second inner pipes 11 and 12, which are usually used as hot water supply pipes and cold water recovery pipes. It is to prevent breakage of the thermal insulation material 15 which may be caused by.

The heat insulating material 15 is made of hard urethane, and the liquid urethane is injected and cured to surround the entire outer circumferential surface of the first and second inner pipes 11 and 12 in the outer appearance 13. It has a function of blocking the heat emitted from the inner tubes 11 and 12.

However, due to the adhesiveness of the insulating material 15 of the urethane material, it is difficult to perform the operation of removing the insulating material 15 from the inner pipe (11, 12) required for the connection work between the insulating pipes 10, internal and external The thermal insulation material 15 and the exterior 13 having no elastic absorbing function may be broken by the expansion and contraction generated in the first and second inner tubes 11 and 12 due to a factor. In addition to the need to install a separate elastic absorbent material separately, there was a problem that the radius of curvature is very large when bending the heat pipe 10 or wheel.

In addition, a separate cost and work time were consumed in manufacturing and installing the spacer 14, and the inner and outer fixed steel plates 16 and 17 were used to prevent the gap between the first and second inner pipes 11 and 12 and to prevent twisting. ) As well as to increase the cost of work, as well as other problems of the work process is complicated.

The present invention has been made to solve the above problems, the foamed insulation of foamed polyethylene or foamed rubber material is molded between the inner tube and the urethane material insulation, absorbing the expansion and contraction of the inner tube of the urethane material by the expansion and contraction of the inner tube Breakage of the insulation and the exterior is prevented, and the gap between the inner tubes is maintained by inserting a plurality of inner tubes, thereby eliminating the spacers and the fixed steel plate, and increasing the insulation effect and easily removing the insulation during the extension of the insulation tube. The purpose is to provide a multi-layered double heat insulation tube.

Double insulation tube of the multi-layered structure according to the present invention for achieving the above object, in the inner tube, the heat insulating material of the urethane material surrounding the inner tube, and in the double heat insulation tube consisting of the outer wrap material, the inner tube and the urethane material The thermal insulation material having a self-elasticity is interposed between the thermal insulation material of the double insulation material layer, characterized in that the elastic deformation of the inner tube due to internal and external factors in the foam insulation material is absorbed.

The urethane insulating material is injected into the liquid phase in the space formed between the foamed insulating material and the outer appearance to harden, thereby forming a close adhesive surface over the entire area of the outer peripheral surface and the inner peripheral surface of the foamed insulation.

In addition, when a plurality of inner tubes are embedded in the outer appearance, the foamed thermal insulation material is bonded to each other and fixed to the surface of the inner tubes so that the gap between the inner tubes is maintained.

Here, the material of the foam insulation may be foamed polyethylene or foamed rubber.

As described above, the double insulation tube of the multi-layered structure according to the present invention absorbs the expansion and contraction of the inner tube by the foam insulation insulation molded between the inner tube and the urethane insulation material to prevent the breakage of the urethane insulation material and the appearance, and a plurality of inner tube to be installed In this case, the foam insulation is installed in each inner tube is fixed in contact with each other, so that the interval between the inner tube is kept constant, the conventional spacer and the inner and outer fixed steel plate is removed to reduce the work cost, as well as the convenience of work is improved.

In addition, the thermal insulation effect is increased by forming the double insulation of the urethane insulation and the foam insulation, and the conventional work that was difficult to remove the urethane insulation from the inner tube when interconnecting the insulation tubes due to the adhesiveness of the urethane insulation, together with the foam insulation, urethane insulation Since it is easily removed from the inner tube has an effect that can be easily extended to the insulation tube.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments are provided to those skilled in the art to fully understand the present invention, and may be modified in various forms, and the scope of the present invention is limited to the embodiments described below. It doesn't happen.

3 is a perspective view schematically showing the interlayer structure while being part of a double heat insulation tube of a multilayer structure according to the present invention, FIG. 4 is a side cross-sectional view of FIG. 3, and FIGS. 5 and 6 are other embodiments of FIG. 3. The inner tube is installed in a perspective view and side cross-sectional view schematically.

The double insulation tube 100 of the multi-worm structure according to the present invention, the inner tube 110 for guiding the fluid flow, and the foamed insulation material 120 of foamed polyethylene or foam rubber surrounding the outer surface of the inner tube 110, and It includes a urethane insulating material 130 of the urethane material surrounding the outer surface of the foamed thermal insulation material 120, and the appearance 140 surrounding the urethane insulation material 130.

The inner tube 110 may be made of copper, iron, stainless steel, or polyethylene resin, depending on the intended use, and guides the fluid to the destination through a hollow formed in the longitudinal direction.

The exterior 140 may be made of various materials such as high density polyethylene, aluminum steel, the thickness of the exterior 140 is determined according to the diameter of the inner tube 110, where the high density polyethylene is basically a high pressure, high temperature Under the conditions, ethylene (CH2 = CH2) is polymerized to break a double bond, and is not excellent in impact resistance, but is mainly used as a material of the exterior 140 due to its excellent chemical resistance, cold resistance, and insulation characteristics.

The foamed thermal insulation material 120 is made of foamed polyethylene or foamed rubber having its own elasticity, and the foamed thermal insulation material 120 absorbs the deformation of the inner tube 110 that is stretched due to internal and external factors, and thus the rigid urethane thermal insulation material 130 In addition to preventing the breakage of the external appearance 140 and absorbs the shock generated from the outside to protect the inner tube 110 and the urethane insulation (130).

The urethane heat insulating material 130 is a liquid urethane is injected between the foamed heat insulating material 120 and the exterior 140 and cured, so that the foamed heat insulating material 120 and the inner tube 110 are tightly adhered to the urethane injection pressure. .

In addition, when connecting the other insulation tube 100 in order to extend the insulation tube 100, the conventional urethane insulation (15 of Figure 2) is bonded to the inner tube (11, 12 of Figure 2) is difficult to separate Although difficult, in the present invention, since the foam insulation 120 is wrapped without being bonded to the inner tube 110, the urethane insulation 130 and the foam insulation 120 can be easily separated from the inner tube (110).

Here, the injection of the urethane thermal insulation material 130 is not injected into the space formed in the state in which the foam thermal insulation material 120 wrapped around the inner tube 110 is inserted into the exterior 140, the foamed thermal insulation material 120 wrapped around the inner tube 110 ) Is injected into the urethane insulation 130 in the space formed during the process of inserting into the exterior (140).

That is, the urethane thermal insulation material 130 is continuously injected into the space formed while the exterior 140 continuously moves to insert the foam thermal insulation material 120, and the urethane insulation material 130 is injected into the foam thermal insulation material 120. Is continued until it is completely inserted into the exterior 140, and when the injection of the urethane thermal insulation 130 is finished, it is hardly attached to the exterior 140 and the foam thermal insulation 120.

On the other hand, the inner tube 110 may be installed in the interior of the exterior 140, in this case, as shown in Figure 5 and 6, the outer circumferential surface of the foamed thermal insulation material 120 is wrapped around the first, second When the inner tubes 111 and 112 are inserted into the exterior 140, the urethane insulating material 130 is injected and cured.

At this time, the first and second foam insulation (121, 122) surrounding the first, second inner tube (111, 112) is in contact with each other, the contact surface is firmly fixed by heat fusion or adhesive, the gap between the first and second inner tube (111, 112) While maintaining a constant, the phenomenon that the initial position of the first and second inner tube (111, 112) is separated and torsional phenomenon is also prevented.

Therefore, the first and second foam insulation (121, 122) surrounds the first and second inner pipes (111, 112) to maintain the interval between the first and second inner pipes (111, 112) as well as the thermal insulation performance of the first and second inner pipes (111,112). This improves the conventional spacers for maintaining the gap between the first and second inner pipes 111 and 112, and also replaces the functions of the conventional inner and outer fixed steel sheets, thereby producing the spacers and the inner and outer fixed steel sheets. The work is simplified because the installation process is omitted.

In addition, the injection of the urethane thermal insulation material 130 is a liquid urethane thermal insulation material 130 is continuously injected while the foam insulation thermal insulation material 120 is inserted into the exterior 140 as in the case where one inner tube 110 is inserted Is done.

Hereinafter, the double insulation tube of the multi-layer structure according to the present invention will be briefly described based on the manufacturing process.

First, in the case of the thermal insulation tube 100 having one inner tube 110, the foam insulation insulation 120 is wrapped in the inner tube 110, the foam insulation insulation 120 wrapped around the inner tube 110 is inserted into the exterior 140 While the liquid urethane insulation 130 is injected into the space formed between the foam insulation 120 and the exterior 140, the injection is made continuously while the foam insulation 120 is completely inserted into the exterior 140 .

The foamed thermal insulation material 120 wrapped around the inner tube 110 is completely inserted into the exterior 140 and the injection of the urethane thermal insulation material 130 is finished. After that, when the urethane thermal insulation material 130 is completely cured, the multilayer insulation layer has a double insulation material layer. The double insulation tube 100 is completed.

Meanwhile, in the case of the thermal insulation tube 100 having a plurality of inner tubes 110, the first and second foam insulations 121 and 122 are respectively wrapped in the first and second inner tubes 111 and 112, and the first and second inner tubes 111 and 112 are wrapped. The outer circumferential surfaces of the first and second foam insulation (121, 122) are abutted and then firmly fixed to each other with heat fusion or adhesive.

The liquid urethane insulating material 130 is injected into the space between the first and second foam insulating materials 121 and 122 and the exterior 140 formed while the first and second foam insulating materials 121 and 122 fixed to each other are inserted into the exterior 140. do. After the injection of the urethane insulation 130 is completed, the urethane insulation 130 is completely cured and has a double insulation layer is completed with a double insulation tube 100 of a multi-layer structure in which a plurality of inner tube 110 is inserted.

In addition, since the urethane insulating material 130 is made in this way, when the first and second inner tubes 111 and 112 having different inner diameters are inserted, the outer tube 140 having various shapes such as elliptical shapes other than the circular shape may be used.

When extending the double insulation tube 100 of the multi-layer structure manufactured in this way, that is, when a plurality of double insulation tube 100 is interconnected, the foam insulation insulation 120 and the foam insulation insulation 120 wrapped around the inner tube (110) Since the urethane thermal insulation material 130 is easily removed from the inner tube, the operation is easy.

In the above described the present invention based on the preferred embodiment, the present invention is not limited to the above embodiment, various modifications by those skilled in the art within the scope of the technical idea of the present invention This is possible.

1 is a perspective view schematically showing a part of a conventional double heat insulation tube.

2 is a side cross-sectional view of FIG. 1.

3 is a perspective view schematically showing an interlayer structure while being part of a double heat insulation tube of a multilayer structure according to the present invention.

4 is a side cross-sectional view of FIG. 3.

5 and 6 are a perspective view and a side cross-sectional view schematically showing a state in which a plurality of inner tube is installed, in another embodiment of FIG.

100: double heat insulation pipe 110: inner tube

111,112: 1st, 2nd inner pipe 120: foam insulation

121,122: first and second foam insulation 130: urethane insulation

140: appearance

Claims

In the double heat insulation tube which consists of an inner tube, the urethane material insulation material which wraps this inner tube, and the exterior which wraps this insulation material,

Between the inner tube and the urethane insulating material is interposed foam insulation having its own elastic is composed of a double insulation layer,

Double insulation tube of the multi-layer structure, characterized in that the expansion and contraction of the inner tube due to internal and external factors in the foam insulation.

The method of claim 1,

The insulating material of the urethane material is injected into the liquid formed in the space formed between the foamed thermal insulation and the external appearance, the double insulation tube of the multi-layer structure, characterized in that the adhesive insulation surface is formed over the entire area of the outer peripheral surface and the inner peripheral surface of the foam insulation .

The method of claim 1,

When the inner tube is embedded in a plurality of appearance, the multi-layered heat insulating tube, characterized in that the gap between the inner tube is maintained because the molded thermal insulation material is bonded to each other and fixed to the surface of the inner tube.

The method of claim 1,

The material of the foam insulation is double insulation tube, characterized in that the foam polyethylene or foam rubber.