JPH033919Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a technique for attaching thermal insulation to the metal walls of structures such as furnaces, kilns, heat treatment pits, etc., and more particularly to a technique for attaching modular insulation blocks to the inner walls of such structures.

Until a few years ago, the most common method of insulating heating devices such as furnaces and incinerators was to use ordinary refractory bricks.
Refractory brick masonry for heating areas is expensive in terms of labor costs and time consuming. Furthermore, repairing and replacing brick linings is expensive and time consuming.

In recent years, developments in insulation techniques for structures such as furnaces have led to the use of insulation blankets made of ceramic materials or glass, such as alumina. This blanket is 1 to 3 inches thick (approximately 25
It is commercially available in rolls of various widths (~75 mm).

In the insulation process, blankets are applied to the walls of a structure in one to three layers, often in an intersecting pattern. There are many ways to attach the blanket to the wall of a furnace or the like.

In most heating devices for furnaces and the like, the wall supporting the blanket is a metal wall called the cold wall. One method of securing the blanket to the cold wall is the use of threaded fixtures that use a combination of drill bits and self-tapping. The fixture is screwed into the wall and protrudes from the wall. A number of fixtures are attached to the wall, and the blanket is threaded through the fixtures. Attach the washer and nut to the threaded fixture to hold the blanket in the secured position.

Another device used for small blankets is a pin with a large washer secured to one end. The pin penetrates the blanket and reaches the metal wall,
Secure the blanket by stud welding.

A third widely used device is a stud and washer combination, where the stud has multiple tapered notches. The studs are welded to the cold wall in a predetermined array and the blanket is pierced with the studs. A washer with a corresponding opening is then passed through the stud to compress the blanket and rotated 90 degrees so that the blanket holds the washer in a locked engagement position.

The blanket insulation devices described above have various drawbacks. First, the fastening device that attaches the blanket forms an exposed device, leaving the outer ends of the studs etc. exposed to heat. This results in burnout of the attachment device and falling of the blanket. The disadvantage of other blanket devices is that the blanket
The reason is that the thickness does not exceed an inch (approximately 75 mm).
That is, if a thermal insulation thickness of, for example, 12 inches (approximately 300 mm) is required, many blankets must be installed across each other to obtain the required thickness. This increases labor costs and takes time.

A recent development in insulation technology is the use of modular insulation blocks. This block is typically 1 foot square and 4 to 12 inches thick.
100~300mm). The first modular block
The advantage of this is that the required thickness can be obtained in one installation. Furthermore, the density of the blocks can be varied so that they have higher density and greater thermal insulation from the low-temperature section to the high-temperature section.

Modular blocks can be attached to the wall of a furnace or the like in a variety of ways. The first type of attachment device is an H-shaped wire retainer, which consists of four arms connected to each other centrally. There is an offset section in the center that is welded to the cold wall of the furnace. Stab the modular insulation block with two arms.
Then stick the next H-shaped device into the opposite side wall of the block, weld it to the metal wall, and then stick the other block with the other two arms. This process is repeated to form a modular block wall with a large number of blocks.

Another method of securing a modular insulation block is to apply an expanded metal dowel to the block. The block is placed against the furnace wall and the expanded metal is attached to the furnace wall. After this, the collar stud is passed through the block and brought into contact with the expanded metal and the furnace wall, and the stud is welded to secure the modular block. A self-tapping screw is then used to pass through the block, drill and screw into the furnace wall. After this, screw the washers and nuts into the screw members,
Tighten the expanded metal to hold the block.

Modular blocks are easier to install than insulation blankets, and the required insulation thickness can be easily achieved. Additionally, the fastening devices used in modular blocks are not exposed to high temperatures, and burnout of the mounting devices is significantly less likely.

H-shaped anchors, collar studs, and self-tapping screw members are expensive, time consuming, and inconvenient to install.

The modular insulation block mounting system of the present invention utilizes a one-piece block mount. The block mount is formed from an integral flat bar member.

The block mount has a base member that contacts and secures the metal wall of the structure. The support members extending from the base member outwardly from the wall should have a height approximately one-half the thickness of the modular blocks used. Two block support members extending in opposite directions from the outer ends of the support members are generally parallel to the metal walls of the structure and have a length approximately one-half the width of the modular block.

To install the block, first secure the first block mount to the metal wall. The base member of the block mount has an opening. A breakable stud having a small diameter section is stud welded through the opening to the metal rod using a stud end welding technique. The weld secures the block fixture by welding the stud and the base portion of the block fixture to the metal wall.
Fold the unwelded ends of the studs to create a gap for the side walls of the modular insulation block to pass through.

Next, the side wall of the modular insulation block is pierced with one block support member, with the side of the modular insulation block facing the metal wall. A block support member opposite the base member of the second block fixture is inserted into the opposite side wall of the insulation block and secured to the metal wall by welding a stud through an opening in the base member. This process is repeated to form a modular insulation block wall.

The modular insulation block mounting device according to the present invention is designed to insulate a metal wall structure such as a furnace or kiln by attaching a modular insulation block having a top wall, a bottom wall, and a side wall with one side in contact with the metal wall of the structure. modular insulation block mounting device for mounting in parallel relationship with each other, the block mounting device being formed entirely from a unitary flat bar of material, the block mounting device having a base extending in surface contact with a metal wall of a structure; A part constituting the member, a part constituting a support member that is bent from the part constituting the base member and extending by a predetermined dimension in a direction away from the metal wall of the structure, and a part constituting the support member bifurcating from the part constituting the support member. A pair of blocks, each having a block support surface, are separated and bent approximately parallel to the metal wall of the structure, one extending in the direction in which the portion constituting the base member extends, and the other extending in the opposite direction. The supporting member is further twisted such that the supporting surface of the block is inclined relative to the metal wall in order to increase the area of support for the modular insulation block when it is inserted into the block and held in place. and
Also, a block mount comprising a pair of block support members that are tapered over almost the entire length so as to have a tapered tip, and a base member of the block mount to be attached to a metal wall of a structure. Equipped with a fixing device for fixing.

Such a modular insulation block mounting device can be easily manufactured by using a flat, one-piece bar-shaped material as a raw material and subjecting it to slight processing to bend and deform it. Moreover, since the block supporting member is twisted and deformed so that the surface supporting the block becomes larger, the ability to support the block is high despite the relatively lightweight structure.
The tendency of the block support member to become difficult to insert into the block due to such torsional deformation is reduced by tapering the block support member over its entire length.

A first embodiment of the block mount according to the invention is shown in FIG. The block mount 10 is formed from an integral piece of flat metal plate. The block fixture 10 has a base member 11 for fastening against a metal wall of a structure to be insulated. The fixing method will be explained in detail later.

Block mount 10 has a support member 12 extending from a base member 11 at an approximately 90° angle.
The height of the support member 12 is approximately 1/2 the thickness of the insulation block to insulate the metal plate.

Block fixture 10 has a pair of opposing block support members 13 extending from the outer ends of support members 12 substantially parallel to the walls of the structure to be insulated. The pair of block support members 13 are tapered over almost the entire length so that the width becomes narrower (that is, thinner) toward the distal end to facilitate insertion into the side wall of the insulation block. Furthermore, the block support member 13 is twisted and inclined with respect to the metal wall surface of the structure to be insulated, thereby forming a large support surface for the insulating block in the vertical direction.

Base member 11 is offset from the center of block mount 10 to one side. As will be explained below, this offset allows the base member 11 to be completely exposed when the block support member 13 on the opposite side of the base member 11 is fully inserted into the side wall of the insulation block and to provide insulation without interference from the insulation block. The fixture can be fixed to the wall of the structure.

An opening 14 is provided in the base member 11. opening 14
As shown in FIG.
The studs can be welded together, as will be explained below, without interference between the member 13 and the opening 14 which are higher up and overlap the base member.

In Figure 2, a metal wall 2 of a structure to be insulated
The first step in installing the insulation in the block mount 10 is to secure the block mount 10 to the metal wall 20 by means of the base member 11.

A metal stud 21 is prepared. metal stud 2
1 has a first weld end 22. A small diameter section 23 formed in the stud allows the stud to be broken off. The unwelded end 24 of the stud after the small diameter section 23 is connected to the chuck 25 of the stud welding tool 36.
It becomes the holding part.

The stud 21 is inserted into the chuck 25 of the stud welding tool 36 and the arc shield 19 is placed over it. The welding end 22 is placed within the opening 14 of the base member 11. The opening 14 of the base member 11 has a stud 21
be slightly larger than the welded end 22 of. Arc weld the studs. The arc during the welding process is Stud 22.
and the metal wall 20, welding the ends of the studs 22 and the metal wall of the structure to be insulated. Furthermore, the arc extends around the base member 11 at the circumference of the opening 14.
It also melts some of it.

After forming an arc between the stud and the metal wall 20 for a predetermined period of time, the stud is forced into the molten metal formed on the base member 11 surrounding the metal wall 20 and the opening 14 and hardened. Upon curing, the welded end of the stud welds to the base member 11 surrounding the circumference of the opening 14 and to the wall 22 of the structure to be insulated, securing the block fixture 10.

After welding the stud 21, the unwelded end 24 of the stud is bent and the stud folded over the reduced diameter section 23, leaving the weld 22, as shown in FIG.
As shown in FIG. 3, the overall height of the weld is reduced so that the stud remainder does not interfere with the insertion of the side wall of the insulation block into the block support member 13 on the weld stud.

A modular insulation block for use with the block mount of the present invention is shown in FIGS. 4 and 5. Modular insulation block 26 is a square block formed from multiple layers of insulation material. The block 26 has a front surface 27, a rear surface 28, and four equal side walls 29.

During installation, the rear wall 28 of the heat insulating block 26 is brought into contact with the metal wall 20. The heat insulating block is moved horizontally on the metal wall 20 and pierced with the block support member 13 on the opposite side of the base member. FIG. 4 shows the insulation block 26 just before being pierced by the block support member 13.

After the first insulation block 26 is attached to the block mount as shown in FIG. 5, the side wall of the second insulation block 30 is inserted into the block support member 13 on the base member 11. Thereafter, the block support member 33 of the second block mount 31 on the opposite side of the base member 11 is inserted into the side wall 32 of the insulation block 30.
Lateral pressure is applied to the block mount 31 to ensure that the block mount 31 is pushed into the side wall 32 of the insulating block 30 so that the support member 34 of the block mount 31 contacts the side wall 32 of the block 30, pushing the block into the first position. Support member 12 of the block mount
compressively engage.

After positioning the second block fixture 31,
The stud 21 is welded through the opening in the block fixture and the block fixture 31 is welded and secured in the same manner as the first block fixture 10.

The above procedure is repeated for each insulation block to form horizontal and vertical rows, covering the entire surface to be insulated with insulation blocks.

The insulation blocks used in the examples described above are 1 foot square and 4 to 12 inches thick. The block is made of fibrous alumina glass. Although in the illustrated example the block is comprised of multiple layers of insulating material, blocks formed by multiple deposits may also be used. Although the illustrated example shows the folds or layers alternating at 90 degrees from each other, any arrangement can be used.

The material forming the block fixture is preferably stainless steel. The height and length of the support member of the fixture is determined by the size and thickness of the block used.

The break-off stud in the illustrated example was 1 inch (approximately 25 mm) long and 5/16 inch (approximately 8 mm) in diameter. The length of the welded end of the stud is approximately 3/16 inch (approximately 5 mm)
The diameter of the small diameter portion was approximately 1/8 inch (approximately 3 mm). The studs were made of mild steel. The opening diameter of the block fixture was approximately 3/8 inch (approximately 10 mm).

As clarified above, the modular insulation block mounting device according to the present invention can be used both when fixing a block fixture to a metal wall of a structure to be insulated and when installing a modular block to a metal wall of a structure. It can be carried out cheaply, rapidly and efficiently.

Although the preferred embodiments of the modular insulation block mounting apparatus according to the present invention have been described, the embodiments and drawings are for illustrative purposes only and are not intended to limit the invention.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view showing a block fixture according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the process of welding the block fixture of FIG. 1 to a metal wall. FIG. 3 is a perspective view of the block fixture of FIG. 1 welded to a metal wall. FIG. 4 is a perspective view just before the modular insulation block is installed on the block mount shown in FIG. 3; FIG. 5 is a partially removed perspective view showing the attachment relationship between a plurality of modular insulation blocks and block fixtures. 10, 31...Block fixture, 11...Base member, 12, 34...Supporting member, 13, 33
...Block support member, 14...Opening, 20...
Metal wall, 21... Stud, 22... Welded end, 2
3...Small diameter part, 24...Break end part, 26, 30
...Modular insulation block, 28...Rear side, 2
9,32...Side wall.

Claims (1)

[Claim for Utility Model Registration] In order to insulate a metal wall structure such as a furnace or kiln, a modular insulation block having a top wall, a bottom wall, and a side wall is brought into contact with the metal wall of the structure on one side. In a modular insulation block mounting device for mounting in parallel relation to each other, the block mounting device is formed entirely from a one-piece flat rod-shaped material and constitutes a base member extending in surface contact with a metal wall of a structure. a part that forms a support member that is bent from the part that forms the base member and extends by a predetermined dimension in a direction away from the metal wall of the structure; and a part that is bifurcated from the part that forms the support member and forms a structure a pair of block support members each having a block support surface, one of which is bent substantially parallel to the metal wall of the base member so as to extend in the direction in which the portion constituting the base member extends, and the other in the opposite direction; furthermore, the block support surface is twisted to be inclined relative to the metal wall in order to increase the area of support for the modular insulation block when it is inserted into the block and held in place;
Also, a block mount comprising a pair of block support members that are tapered over almost the entire length so that the tips thereof are tapered, and a base member of the block mount that is attached to a metal wall of a structure. Modular insulation block mounting device with fastening device for fastening.