KR20150133158A - Apparatus For Heat Insulation Being Used In High Temperature Circumstance - Google Patents

Abstract

The present invention relates to a heat insulation apparatus of a flue or a pipe for a high temperature environment used in a workplace having a high temperature environment such as a steel mill. The heat insulation apparatus of a flue or a pipe for a high temperature environment comprises: a frame inserted on an outer circumference of a tubular body such as a flue or a pipe; and a fire-resistant tube fixed on the frame while enclosing an outer circumference of the frame in a constant thickness to insulate a gap between the inside and the outside of the tubular body. The frame (10) consists of a first and a second unit frame (10a, 10b) formed in a semi-cylindrical shape and provided with a flange bent on both sides thereof. The fire-resistant tube (20) is made of a fire-resistant material shaped in a mold, and consists of a first and a second unit fire-resistant tube (20a, 20b) formed in a semi-cylindrical shape and fixed on the outside of the first and the second unit frame (10a, 10b) in the constant thickness. Cut portions of the first and the second unit frame (10a, 10b) are bent to the outside after the first and the second unit frame (10a, 10b) are cut to form a plurality of binding parts (16) which are inserted into the first and the second unit fire-resistant tube (20a, 20b).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulation device for a high temperature environment flue or piping,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat insulation device, and more particularly, to a heat insulation device for a flue or pipe for a high temperature environment used in a workplace having a high temperature environment such as a steelworks.

Various heat insulating devices are used in work places having a high temperature environment such as steelworks to prevent work from becoming difficult due to excessive heating of the work place and to prevent waste of heat energy.

Insulation pipes are to be provided for water cooling pipes for cooling the year or skid rails. Such an adiabatic device has a structure in which a refractory concrete is placed on the outer periphery of a pipe made of a metal material so as to surround the pipe and cured. It is very difficult to install such a heat insulation device over a long period of time in a situation where the work is currently being carried out. It is very important to install in a short time and get it up and running. This is because stopping the operation of the facility causes a great loss for the user. The same difficulty arises when replacing old insulation equipment installed in the past.

Conventionally, there has been used a method of preparing a cylindrical or semicylindrical frame which is in close contact with the outer circumferential surface of a tube such as a flue, placing and curing concrete on the outer surface of the frame, and then installing the concrete on a pipe such as a flue casting).

This method provides the advantage of facilitating installation and dismantling, but there is a problem that cracks occur in the concrete because the frame and the concrete are separated from each other due to the difference in thermal expansion coefficient. For this problem, the pin is welded and fixed to the outer periphery of the frame in the form of a wedge to strengthen the bonding force with the concrete.

In this case, however, it is troublesome and time-consuming to fasten the pins to the thin steel plate by welding, resulting in a problem that the labor cost is increased and the weight is increased and the cost is increased due to the use of the material.

Korean Patent Application No. 20-2002-0021649 Korean Patent Application No. 20-2006-0014311

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to protect a flue or pipe used in a high temperature environment from heat and to easily install and dismantle in a short time without a long- And to provide an excellent insulating device. The specific objects of the present invention will become more apparent from the following description.

The above object is achieved by a frame which is fitted in and adhered to the outer periphery of a tube such as a flue or a pipe, And a refractory tube which is fixed in a state in which the outer periphery of the frame is wrapped with a predetermined thickness so as to allow heat insulation between the inside and the outside of the tubular body.

A first unit frame having a semicylindrical shape in which a first flange is bent at both sides of the frame; A second unit frame connected to the first unit frame to form a cylinder, the second unit frame having a semi-cylindrical shape in which a second flange is bent at both sides;

Wherein the refractory tube is a refractory material molded using a mold and has a semi-cylindrical first refractory tube fixedly installed outside the first unit frame to a predetermined thickness, And a second unit refractory tube of semi-cylindrical shape fixedly installed;

", "Ｃ", "ㄷ"또는 "∧"중 어느 하나 이상의 형태로 절개된 다음 절개부위가 외측으로 절곡됨으로써 상기 제1,2단위내화관 내부에 삽입되는 결착판을 다수 개 가지는 것을 특징으로 하는 고온 환경용 연도 또는 배관의 단열장치에 의해 달성된다.The first and second unit frames are "

And a plurality of the binding plates inserted into the first and second unit refractory tubes by being incised into any one or more of "C", "C", or " ∧ " And a heat insulation device for a flue or piping for a high temperature environment.

According to a feature of the present invention may be a bent cross-sectional shape of the plate itself, such that the binder forms siot (∧) chair or zigzag (Z).

According to an aspect of the present invention, a fastening plate having bolt-fitting holes may be protruded from the first and second flanges.

According to another aspect of the present invention, the binding plate is provided longitudinally and laterally on a semi-cylindrical surface of the first and second unit frames, and can be cut and bent alternately up and down.

According to another aspect of the present invention, the binding plate is provided longitudinally and transversely on the semi-cylindrical surface of the first and second unit frames, and can be cut and bent alternately in the left and right directions.

According to another aspect of the present invention, a through hole may be formed in the center of the binding plate.

According to another aspect of the present invention, the refractory material is characterized in that the refractory material comprises 20 to 50% by weight of inorganic fibers including aluminum oxide (Al ₂ O ₃ ) and silicon oxide (SiO ₂ ), and inorganic binder 10 To 30% by weight of hollow alumina, and 5 to 30% by weight of hollow alumina, and having high refractivity even at high temperature, preventing cracking and dropout due to shrinkage and maintaining heat insulation,

1 to 10% by weight of one or more metal powders selected from the group consisting of silicon (Si), aluminum (Al), zirconium (Zr), chromium (Cr) and magnesium (Mg) the metal powder are each a silicon oxide by oxidizing at least 1,200 ℃ temperature (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), chrome (Cr ₂ O ₃₎ oxide, magnesium oxide (MgO) And the metal powder may be expanded to have a volume.

According to the above configuration, there is provided an adiabatic device capable of protecting a flue or pipe used in a high-temperature environment from heat. More specifically, it is easy to install and dismantle in a short time without interrupting the work process of the installation site for a long time. It has excellent adhesion force between refractory concrete and frame, which improves durability, increases strength and lowers production cost including labor cost. There is provided an insulation device for a flue or pipe for a high temperature environment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a heat insulation device for a flue or pipe for a high temperature environment according to an embodiment of the present invention; FIG.
2 is a cross-sectional view taken along line A-A 'in Fig.
3 is an exploded perspective view of a heat insulation device for a flue or pipe for a high temperature environment according to an embodiment of the present invention.
4 is an exploded view of first and second unit frames of a heat insulation device for a flue or pipe for a high temperature environment according to an embodiment of the present invention.
5 is a perspective view of a binding plate according to another embodiment of the present invention.

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

The present invention relates to an adiabatic device suitable for use in a high-temperature environment such as a steelworks where a temperature of 1,000 ° C or more is handled. In particular, heat exchange between the inside and the outside of the tube occurs at least by winding the outside of the tube, To insulate it.

The scope of the right is not limitedly limited by the specific use of the insulation device of the present invention, and the technical field of the present invention can be applied in various fields.

The heat insulation device (hereinafter referred to simply as "heat insulation device") of the flue for high temperature environment of the present invention comprises a frame 10 which is fitted on the outer periphery of a tube S such as a flue or a pipe, And a refractory tube 20 which is fixed while being wrapped around the outer circumference at a constant thickness.

The frame 10 is composed of a first unit frame 10a and a second unit frame 10b in the shape of a semicylinder, and is generally made of a stainless steel plate. The first unit frame 10a has a semicylindrical shape, and a first flange 11 is bent at both ends along a longitudinal direction perpendicular to the radial direction. The second unit frame 10b has the same semi-cylindrical shape as the first unit frame 10a, and the second flange 12 is bent at both ends thereof.

Fastening plates 14 and 15 having bolt insertion holes 13 may be formed at the same positions on the first and second flanges 11 and 12. The fastening plates 14 and 15 are provided at regular intervals, and the number of the fastening plates 14 and 15 can be changed according to the length of the frame 10. By using the fastening plates 14 and 15 and the bolt fastening tool 30, the first and second unit frames 10a and 10b can be fixed while being opposed to each other. That is, the first and second unit frames 10a and 10b can be a cylindrical frame 10.

The refractory 20 is formed by baking a refractory material using a mold. The refractory 20 has a first unit refractory 20a having a semi-cylindrical shape fixed to the outside of the first unit frame 10a with a constant thickness and a second unit refractory 20b fixed to the outside of the second unit frame 10b with a predetermined thickness And a second unit refractory tube 20b having a semicylindrical shape.

According to the embodiment of the present invention, the refractory material used as the refractory pipe 20 may be a "non-shrinkable ultra-lightweight and lightweight fireproofing material" of Patent Registration No. 10-0678635, which has been patented in the domestic patent. The non-shrinking ultra-high temperature and lightweight fire-resistant insulating material comprises 20 to 50% by weight of inorganic fibers containing aluminum oxide (Al ₂ O ₃ ) and silicon oxide (SiO ₂ ), 10 to 30% by weight of an inorganic binder containing alumina cement, And 5 to 30% by weight of alumina, and having high refractivity even at a high temperature, and preventing cracking and detachment due to shrinkage and maintaining the heat insulating property,

1 to 10% by weight of one or more metal powders selected from the group consisting of silicon (Si), aluminum (Al), zirconium (Zr), chromium (Cr) and magnesium (Mg) the metal powder are each a silicon oxide by oxidizing at least 1,200 ℃ temperature (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), chrome (Cr ₂ O ₃₎ oxide, magnesium oxide (MgO) And expanding in volume as it goes. For further details, refer to the above-mentioned patent publication.

", "Ｃ", "ㄷ"또는 "∧"중 어느 하나 이상의 형태로 절개된 다음 절개된 부분이 외측으로 1단 이상 절곡됨으로써 제1,2단위내화관(20a,20b) 내부에 삽입되는 결착판(16)을 다수 개 가진다. 도 1 내지 도 4는 일단으로 절곡된 형태를, 도 5는 다단으로 절곡된 형태를 도시한다. 절개의 형태는 임의적이므로 도시된 바에 의해 본 발명의 권리범위가 한정되지 아니한다. 결착판(16)은 레이저를 이용하여 절개하며, 1단의 절곡 각도는 90˚가 적당하다. According to an aspect of the present invention, the first and second unit frames 10a and 10b are formed to have a "

"," C "," c "or" ∧ "of which being bent more than one step to the next is a cut-away, partial, lateral incision into one or more types in the first and second corollas unit (20a, 20b) that are inserted into the binder Figures 1 to 4 show a folded shape at one end and Figure 5 shows a folded shape at multiple stages. The shape of the incision is arbitrary, so that the scope of the present invention The binding plate 16 is cut using a laser, and the bending angle of the first stage is preferably 90 degrees.

The cutting form of the binding plate 16 will be described with reference to FIG. 4 which is a developed view. The binding plates 16 may be formed by vertically and horizontally arranging on the semi-cylindrical surfaces of the first and second unit frames 10a and 10b, and by cutting and bending them alternately in the up and down direction W1. That is, alternately in the up-and-down direction W1, one at the left, and one at the right.

Also, the binding plates 16 may be formed by cutting and bending in the left-right direction W2 on the semi-cylindrical surface of the first and second unit frames. That is, alternately in the left and right directions W2, and one left side may be inclined to the right side. The degree of inclination (A) of the binding plate 16 is preferably 45 degrees, but is not limited thereto.

"와 같이 외측으로 갈수록 면적이 넓어지게 절개되는 경우에는 내화관(20)의 외측으로 갈수록 결착판(16)이 차지하는 면적은 증가되게 된다. Since the binding plates 16 are staggered in this manner, the binding force with the refractory tube 20, which is laid on and stuck thereon, is very excellent. In particular, when the engagement plate 16 is in the "

The area occupied by the binding plate 16 increases toward the outside of the refractory tube 20 when the area is widened toward the outside.

This structure minimizes the thermal impact between different materials due to the difference in thermal expansion coefficient, thereby enhancing the durability and maximizing the bonding force between the refractory tube 20 and the frame 10. According to another embodiment of the present invention, a through hole 17 may be formed in the center of the binding plate 16. Since the refractory material is filled through the through holes 17, the bonding force can be further increased.

According to the embodiment of the present invention, the assembling recesses 21 are provided at the portions where the fastening plates 14 and 15 of the first and second unit refractory tubes 20a and 20b are provided to facilitate bolt fastening. This assembly groove 21 can be cured after filling with a filling member 31 made of the same refractory material as that of the refractory pipe 20 after the heat insulating device is installed on a flue or the like and fastened and fastened by a bolt fastener 30 Reference). The filler member 31 may be sandwiched in advance in a block form as shown. In this case, the filling member 31 may be fixed with an adhesive or the like.

The heat insulating device of the present invention may be provided with a length (L) of 200 to 1,000 mm, and the heat insulating device may be used continuously connected along the longitudinal direction. When the heat insulating device is connected in the longitudinal direction, the refractory tube 20 and the refractory tube 20 may be connected to each other by adhesive or heat-resistant sealing. And may be connected to each other in a similar manner to the first and second unit frames 10a and 10b as described above.

As described above, the first and second unit frames 10a and 10b of a semicylindrical shape form a single cylinder, but the present invention is not limited thereto. For example, you could split the cylinder into three or four pieces and then assemble them. In this case, the arc angle of one unit frame will be 120 ° or 90 °.

In addition, the heat insulating device of the present invention may not necessarily be installed so as to surround the entire pipe made of a cylinder. For example, the outer circumferential surface of a semicylinder having a U-shaped cross section.

According to another embodiment of the present invention the binding plate 16 may be of a bent as shown in Figure 5 the cross-sectional shape itself to the shape siot (∧) chair or zigzag (Z). In Fig. 5, it is expressed in a zigzag (Z) form by bending twice. The fixability of the refractory 20 and the fastening plate 16 will be doubled. The bending form called bending number can be variously selected. This is because a feature of this embodiment is to increase the binding force with the refractory tube 20 by imparting a three-dimensional property to the binding plate 16.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Each of the embodiments described above may be used in any combination by a person skilled in the art, and such a combination is not within the scope of the present invention even though it is not mentioned here.

10: frames 10a and 10b: first and second unit frames
11, 12: first and second flanges 13: bolt-
14, 15: first and second fastening plates 16:
17: Through hole 20:
20a and 20b:
21: Assembly groove 30: Bolt fastener
31: Filling member S: Tubular body

Claims (4)

A frame which is fitted in and adhered to the outer periphery of a tubular body such as a flue or a pipe; And a refractory tube which is fixed in a state in which the outer periphery of the frame is wrapped with a predetermined thickness so as to allow heat insulation between the inside and the outside of the tubular body.
A first unit frame having a semicylindrical shape in which a first flange is bent at both sides of the frame; A second unit frame connected to the first unit frame to form a cylinder, the second unit frame having a semi-cylindrical shape in which a second flange is bent at both sides;
Wherein the refractory tube is a refractory material molded using a mold and has a semi-cylindrical first refractory tube fixedly installed outside the first unit frame to a predetermined thickness, And a second unit refractory tube of semi-cylindrical shape fixedly installed;
The first and second unit frames are "

And a plurality of the binding plates inserted into the first and second unit refractory tubes by being incised into any one or more of "C", "C", or " ∧ " For insulation of flue or pipe for high temperature environment.
The method according to claim 1,
And a through hole is formed in the center of the binding plate.
The method according to claim 1,
The engagement plate 16 or the heat insulating device of the flue pipe for a high-temperature environment, characterized in that the bending cross-section in the form of itself so that the form siot (∧) chair or zigzag (Z).
The method according to claim 1,
Wherein the refractory material comprises 20 to 50 wt% of inorganic fibers containing aluminum oxide (Al ₂ O ₃ ) and silicon oxide (SiO ₂ ), 10 to 30 wt% of an inorganic binder containing alumina cement, 5 to 30 wt% %, Which has high fire resistance even at a high temperature and prevents cracking and dropout due to shrinkage and maintains the heat insulation property,
1 to 10% by weight of one or more metal powders selected from the group consisting of silicon (Si), aluminum (Al), zirconium (Zr), chromium (Cr) and magnesium (Mg) the metal powder are each a silicon oxide by oxidizing at least 1,200 ℃ temperature (SiO _2), aluminum oxide (Al ₂ O _3), zirconium oxide (ZrO _2), chrome (Cr ₂ O ₃₎ oxide, magnesium oxide (MgO) Wherein the metal powder is a non-shrinkable ultra-high-temperature lightweight fire-proof insulator.

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