KR200291614Y1 - A Adiabatic Coated Double Insulation Pipe - Google Patents

Abstract

The present invention relates to a heat insulation coating double insulation tube, to form an insulation coating layer 30 on the outer peripheral surface of the inner tube 20 can be used in high temperature piping up to 1,200 ℃ use temperature range and the insulation layer 60 and the appearance (90) ), The insulation thickness can be remarkably improved as the thickness is reduced, which improves the workability of the pipe and shortens the working time, thereby reducing production cost and construction cost. To this end, a heat insulating coating layer 30 and a heat insulating material 40 which are insulated on the outer surface of the inner tube 20 through which the fluid passes are sequentially stacked, and a plurality of clamp members 50 surrounding the outer surface of the heat insulating material 40. ) Is positioned at regular intervals and the roller support 70 having one end fixed to an outer surface of the clamp member 50 penetrates the insulating layer 60, and the other end of which the roller 76 is mounted is appearance 90. Is formed up to an inner circumferential surface, and the vacuum layer 80 is formed between the insulating layer 60 and the exterior 90.

Description

Insulation coating double insulation pipe {A Adiabatic Coated Double Insulation Pipe}

The present invention relates to a double insulation thermal insulation tube used for long-distance transfer of high-temperature and low-temperature fluid, and more specifically, the heat insulation layer and the thickness of the outer appearance is thinner, lighter and easier to handle, easy to install insulation insulation double insulation It's about the coffin.

In general, the pipe is a guide member for transporting an indefinite fluid. The pipe is largely divided into a steel pipe, a copper pipe, a cast iron pipe, and a synthetic resin pipe.In the case of transferring a high temperature fluid, a steel pipe is mainly used. Cast iron pipes, resin pipes and the like are used.

In particular, steel pipes used to transfer fluids such as hot and cold hot water, cold water, steam, and oil at high and low temperatures require heat insulation and durability to preserve physical properties of the fluid to be transferred.

As a method of thermal insulation of such steel pipes, the inner pipe (steel pipe) should be constructed, followed by the field insulation work with a heat insulating material or a heat insulating material, and in the case of a double heat insulating pipe, a polyurethane foam may be placed between an inner pipe and a high-density polyethylene material pipe. The method of foaming is used.

However, the method of field insulation work is mainly to be installed on the ground, and when it is installed underground, it is necessary to make a joint pit separately so that there is an increase in construction cost, delay of construction period, and difficulty in maintenance. As a range of -10 to 120 ° C, there is a problem that the temperature range is narrow and heat loss is large due to the heat conduction of the insulating layer such as polyurethane foam.

In order to improve the above problems, the inner tube and the outer heat insulating tube consisting of a heat insulating material, a clamp member, a heat insulating layer, a vacuum layer and the outer layer are sequentially laminated on the outer circumferential surface of the inner tube, and installed on one side of the clamp member to Insulating / cooling double steel pipes were introduced, which consisted of piping support to the inner circumference.

However, the above-mentioned double-heated steel pipe for thermal insulation / cold storage can not be used in high-temperature pipes up to 1,200 ℃ because the operating temperature range from cryogenic temperature to 600 ℃, and the thickness of the heat insulating layer and the appearance should be thickened in order to secure excellent thermal insulation There was a problem that the production volume and construction cost increases because the volume is large, workability is poor at the time of piping and a lot of working time is required.

The present invention has been devised to improve the above problems, by forming an insulating coating layer on the outer peripheral surface of the inner tube can be used in high temperature piping up to 1,200 ℃ operating temperature range, as well as the thickness of the insulating layer and the appearance is reduced Insulation can be significantly improved to improve the workability of the pipe and the working time is shortened to provide a double insulation thermal insulation tube that can reduce the production cost and construction costs.

1 is a perspective view of the main portion of the double insulation tube according to the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

Explanation of symbols on the main parts of the drawings

10: double heat insulation tube 20: inner tube

30: insulation coating layer 40: insulation

50: clamp member 52: fastening portion

54: bolt 56: nut

60: heat insulation layer 70: roller support

72: roller shaft 74: fastening pin

76: roller 80: vacuum layer

90: appearance

Insulation coating double heat insulation tube of the present invention for achieving the above object is sequentially laminated with an insulating coating layer and a heat insulating material on the outer surface of the inner tube through which the fluid is passed, a plurality of clamp members surrounding the outer surface of the heat insulating material Is positioned at regular intervals and the roller support having one end fixed to the outer surface of the clamp member penetrates the insulating layer, and the other end of which the roller is mounted is formed to the inner circumferential surface of the exterior, and the vacuum is between the thermal insulation layer and the exterior. A layer is formed.

In addition, the insulating coating layer is formed in a thickness of 3 ~ 4mm along the length direction, monomer and acrylic polymer, emulsion resin and rubber resin, amorphous silicate and quartz silicate, expanded pearl rock insulation and synthetic resin, acrylate copolymer, titanium dioxide, It is characterized in that it is formed of any one mixed material selected from the group consisting of ethylene glycol and ammonia, water and a surfactant mixture.

In addition, the clamp member is installed on the outer surface of the heat insulator at intervals of 2 to 6 m in the longitudinal direction to maintain the vacuum layer at a predetermined interval while allowing the inner tube to move smoothly in the exterior during thermal expansion.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a partial cutaway view of the appearance of the position of the roller support 70 of the double heat insulation tube 10 having the insulation coating layer 30 of the present invention, Figures 2 and 3 are the inner tube 20 according to the present invention A cross-sectional view of the AA and BB lines of FIG.

As shown in the figure, the double insulation tube 10 for transferring a fluid of a constant temperature without heat loss is a heat insulating coating layer 30 is formed on the outer circumferential surface of the inner tube 20 through which the fluid flows in a coating thickness, the heat insulation The outer circumferential surface of the coating layer 30 is wrapped with a heat insulating material 40 of a constant thickness and then the clamp member 50 is installed in the longitudinal direction of the heat insulating material 40 is configured.

In addition, the outer circumferential surface of the clamp member 50 is wrapped with a thermal insulation layer 60 to prevent heat loss, and the roller support 70 penetrating through the thermal insulation layer 60 has one end fixed to the clamp member 50. The other end of the roller 76 hinged is formed in contact with the inner circumferential surface of the exterior 90 serves to smoothly induce the sliding of the inner tube 20 during thermal expansion of the inner tube.

In particular, the inner tube 20 is any one selected from steel pipes, copper pipes, cast iron pipes so that fluids such as cold water, hot water, steam and oil can be used directly in the temperature range of -18 ~ 1,200 ℃, the appearance (90) In addition, it is preferable to be composed of a steel pipe.

In addition, the insulating coating layer 30 is composed of a mixed material such as silica-based, ceramic-based, acrylic binder and high-quality latex that has sufficient thermal insulation performance at -18 to 1,200 ° C and is excellent in rust prevention, waterproofing and corrosion resistance. It is preferable that it is comprised from the mixed material which added the reinforced plastic and polymer vinyl which added carbon, fiber, etc. to the alloy of a raw material.

That is, these mixed materials include monomers and acrylic polymers, emulsion resins and rubber resins, amorphous silicates and quartz silicates, expanded pearlite insulation and synthetic resins, acrylate copolymers, titanium dioxide, ethylene glycol and ammonia, water and surface active agents. Any mixed material selected from these is used for the insulation coating layer 30 according to the conditions of the use temperature.

Specifically, according to the temperature condition of the fluid, the organic mixtures have a fluid temperature of 150 ° C. or less, and the organic and inorganic materials have a fluid temperature of 150 ° C. to 200 ° C., and the inorganic mixtures have a fluid. When the temperature is 200 to 1,200 ° C, it is preferable to be used for the thermal insulation coating layer 30, respectively.

In addition, the insulating coating layer 30 is preferably coated with a thickness of 0.5 to 5 mm, more preferably 3 to 4 mm, and the coating thickness thereof is in accordance with the range of temperature conditions of the fluid passing through the inner tube 20. It is coated differently within the range of thickness.

And the construction of the insulation coating layer 30 is made in the field and works for the remaining parts except the pipe connection portion (not shown) of a total of 100mm by 50mm at both ends of the inner tube 20, the coating process of the inner tube 20 After removing foreign substances such as oil and soil attached to the outer circumferential surface, it is possible to paint directly with a brush or roller 76 in a completely dry state or to form an insulating coating layer 30 by spraying with a nozzle. It is desirable to.

In addition, the outer circumferential surface of the heat insulating coating layer 30 prevents heat conduction of the inner tube 20, and the heat insulating material 40 capable of withstanding high temperature and high pressure is wrapped to a certain thickness, and the clamp member 50 is disposed on the outer surface of the heat insulating material 40. The inner tube 20 is installed at intervals of 2 to 6 m in the longitudinal direction to allow the inner tube 20 to move smoothly within the outer shell 90 during thermal expansion.

On the other hand, the clamp member 50 is fixed to each other by a fastening portion 52 protruding at both ends and the bolt 54 is inserted into the fastening portion 52 is fastened by a nut 56, the clamp member 50 On the outer circumferential surface of the outer layer is wrapped with a thermal insulation layer 60 to prevent heat loss, the roller support 70 in the four or three directions radially spaced at a predetermined angle is fixed and the other end of the roller support 70 is the appearance (90) It is configured to contact the inner peripheral surface of the).

In addition, the thermal insulation layer 60 is formed for thermal insulation of the inner tube 20 together with the thermal insulation coating layer 30, calcium silicate, glass surface, urethane pipe cover and rock wool insulation material is used, it is preferable to use rock wool insulation material. .

In addition, the insulating layer 60 is wound on the outer circumferential surface of the heat insulator 40 in a state in which the exterior 90 and the diameter center of the inner tube 20 inserted into the exterior 90 are fixed and assembled. It is formed by inserting into 90.

At this time, the thermal insulation layer 60 is formed on the outer circumferential surface of the inner tube 20 is excellent in insulation, rust prevention and corrosion resistance, so it is not necessary to form a thick as used in high-temperature piping, the insulation coating layer 30 It is preferable that it is formed to a thickness of assisting ().

That is, the thickness of the thermal insulation coating layer 30 is changed according to the range of the use temperature in the double insulation tube 10 and the thickness of the thermal insulation layer 60 is also changed according to the thickness of the insulation coating layer 30, the present invention Since the insulation coating layer 30 is excellent in heat insulation, waterproof, anti-corrosion and corrosion resistance, the insulation layer 60 and the thickness of the exterior 90 is reduced while the heat insulation performance is improved.

On the other hand, the roller support 70 smoothly induces movement due to expansion in the length and width direction of the inner tube 20 during thermal expansion by a high temperature fluid flowing in the inner tube 20, the inner tube 20 is an appearance 90 ) And to maintain a constant distance between the insulating layer 60 and the vacuum layer 80 between the appearance.

The roller support 70 is fixed by welding one end of the roller shaft 72 to the outer circumferential surface of the clamp member 50, the other end of the roller shaft 72 of the outer tube 90 when the thermal expansion of the inner tube (20) The roller 76 in contact with the inner circumferential surface is hinged by the fastening pin 74 so as to be rotatable.

In addition, as the exterior 90, the inner tube 20 and the insulation layer 60 may be protected, and the inner tube 20 may move smoothly in the exterior 90, and the lifespan of about 30 to 50 years is guaranteed in consideration of the earth pressure. Suitable piping materials are used. Suitable materials include high-density polyethylene tubes, aluminum tubes, steel tubes, cast iron tubes, and the like.

In addition, the surface of the exterior 90 can be used semi-permanently by coating with asphalt or polyethylene to prevent the corrosion caused by chemical corrosion or potential difference in soil.

In addition, the vacuum layer 80 is a space formed at regular intervals by a roller support 70 installed between the insulating layer 60 and the exterior 90 of the double insulation tube 10, the length of the inner tube 20 during thermal expansion And to smooth the movement due to the expansion in the width direction and to increase the insulation effect and to improve the workability, at this time vacuum treatment up to 10 ~ 50mbar will be more effective to prevent corrosion due to the insulation effect and air reduction. .

In addition, when the double insulation tube 10 is buried, both ends are sealed to block the inflow of air into the vacuum layer 80 and the inflow of water between the inner tube 20 and the exterior (90).

Insulating coating double insulation tube as described above is to transfer the fluid of a constant temperature flowing in the inner tube 20 to prevent heat loss, the pipe end connection member, the manhole wall during underground buried pipe, the concrete wall during the ground construction It may be widely applied to the wall passing member and the fixing member, and construction period and construction cost are also reduced.

According to the heat insulation coating double insulation tube of the present invention made as described above, the insulation coating layer is formed on the outer circumferential surface of the inner tube and has sufficient insulation performance and excellent rust prevention, waterproof and corrosion resistance even at -18 to 1,200 ° C. Otherwise, the thickness of the thermal insulation layer is significantly reduced to assist the insulation coating layer, and also reduces the thickness of the appearance, thereby reducing the production cost.

In addition, the insulation layer is improved while the thickness of the insulation layer and the appearance are reduced, so that the volume and weight of the double insulation tube can be reduced, thereby simplifying the construction and improving the work efficiency.

Claims (3)

Insulating coating layer 30 and the insulating material 40 which is insulated on the outer surface of the inner tube 20 through which the fluid passes are sequentially stacked, a plurality of clamp members 50 surrounding the outer surface of the insulating material 40 The roller support 70, which is positioned at regular intervals and whose one end is fixed to the outer surface of the clamp member 50, penetrates the insulating layer 60, and the other end of the roller 76 is mounted on the other end of the exterior 90. It is formed up to the inner circumferential surface, the insulating heat insulating double insulation tube, characterized in that the vacuum layer 80 is formed between the insulating layer 60 and the exterior (90). The method of claim 1, The insulating coating layer 30 is formed of a thickness of 3 ~ 4mm along the length direction, monomer and acrylic polymer, emulsion resin and rubber resin, amorphous silicate and quartz silicate, expanded pearl rock insulation and synthetic resin, acrylate copolymer, titanium Insulating coating double insulation tube, characterized in that formed of any one selected from the group consisting of a mixture of dioxide, ethylene glycol and ammonia, water and a surfactant. The method of claim 1, The clamp member 50 has a longitudinal direction on the outer surface of the heat insulating material 40 to maintain the vacuum layer 80 at regular intervals while allowing the inner tube 20 to move smoothly within the outer appearance 90 during thermal expansion. Double insulation thermal insulation tube, characterized in that installed at intervals of 2 to 6m.