JPH0649514B2 - Equipment insulation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an insulation method for large-scale equipment and tanks.

More specifically, chemical equipment such as chemical reactors, crude oil, heavy oil,
Heat insulation for large heat or cold storage tanks such as asphalt and brine (hereinafter collectively referred to as equipment) for heat insulation and / or heat insulation and / or vibration insulation for vibration equipment such as soundproofing / vibration protection The present invention relates to a prefabricated insulation method that does not require a mounting frame when performing construction.

[Conventional technology]

Conventional insulation methods for devices include a method of covering the device with a plate-shaped insulating material and a urethane foam method of forming urethane foam on the surface of the device.

The conventional method of using a plate-shaped insulating material is to plant a certain number of support bolts on the surface of the equipment at predetermined intervals and use the bolts to plate-shaped insulating material (rock wool, glass wool, calcium silicate material, etc.). ) Is attached, this is tightened with a wire, a wire mesh is stretched on the surface, a water finish material is applied, and finally an exterior thin iron plate is stretched. In such a method, it is necessary to construct a scaffold around the equipment, and the construction period is long and the cost is high.

As a urethane foam method, apply rust preventive paint to the equipment surface, spray urethane foam on it, protect this urethane foam layer with a fireproof coat, and then apply surface paint on it, scaffolding There is a method in which an exterior plate is stretched over a certain distance from the equipment surface and urethane is injected and foamed between the exterior plate and the tank.

The former has the advantage of not needing to build a scaffold, but on the other hand, since the urethane foam layer is in direct contact with the equipment surface, there is a drawback that the urethane foam layer may crack due to expansion and contraction of the equipment, and further At this time, rainwater is easily absorbed by the urethane foam layer, and in extreme cases, the equipment surface may be corroded. Further, the urethane softens due to the cracks in the foam layer and the absorption of rainwater, and the equipment often expands to cause "blister" in the urethane.

The urethane injecting method has the same drawbacks as the urethane spraying method, and more scaffolding needs to be installed.

As a prefabricated insulation method in which the drawbacks of the conventional construction method can be eliminated and construction can be performed without erection of scaffolding, and an insulating material is attached to the exterior plate at the factory.
41,964, JP-A-52-43,115, and JP-A-54-2,566 are known.

All of these are provided with a frame for mounting a panel or a panel suspension device fixed to the main body of the device, and the panel is attached to the frame or the panel is suspended.

[Problems to be Solved by the Invention]

When installing a prefabricated insulating panel in which a plate-shaped insulating material is attached to the exterior material at the factory, it is possible to plant support bolts on the equipment surface and mount it with this, just as the above-mentioned plate-shaped insulating material is mounted. . However, the outer panel of the equipment is manufactured by the can making work, and even if it looks like a certain shape when viewed from a distance, it is inevitable that there are subtle unevenness and local deformation, and the thickness of the board is also thick. Since the device is thin, even when the device is empty like an empty tank, the large device is deformed by expansion and contraction due to temperature and various other external forces.

Therefore, even if a hole is drilled at a predetermined location of a prefabricated insulating panel in the factory and a support bolt is planted according to its size, the hole will be misaligned in actual mounting and cannot be mounted. There was a problem.

Therefore, like the plate insulation material mounting method, a scaffold is required to stretch the exterior plate on site, the construction period becomes long and costly, and the urethane foam layer has cracks like the urethane method, Even if the problem of softening or blistering due to rainwater can be solved by preliminarily attaching an insulating material to the exterior plate in the factory, there remains a problem in mounting this prefabricated insulating panel.

In each of the above publications, a frame of a frame is separately formed on the outside of the device, a position correcting mechanism such as a long hole or a moving bolt is provided in the frame, or the panel itself can be moved left and right like suspension. And deal with it.

However, making a separate skeleton on the outside of this equipment is costly and time-consuming, if not necessary for scaffolding.

However, it is difficult to attach the skeleton itself to a device having reinforcing ribs or other protrusions, apart from a device such as a tank having less irregularities on the outside.

It is an object of the present invention to provide a method for attaching a prefabricated insulating panel in which an insulating material is preliminarily attached to an exterior material to a device in a factory without requiring any skeleton.

Moreover, although the technique described in the above publication can be achieved to some extent, further shortening of the on-site construction period, no need for scaffolding installation, no influence by expansion and contraction of equipment, insulation by two insulating layers of air layer and insulating panel Great effect, uniform insulating layer can be maintained, safe use temperature can be raised even with low heat resistant insulating material, no adverse effect due to intrusion of rainwater, exterior is elegant and robust To provide a construction method that simultaneously achieves the following objectives: easy inspection and repair after construction, and safety against fire.

In the technique described in the construction method, the air layer between the device outer plate and the insulating material is determined when the frame is constructed, but in the present invention, a construction method capable of adjusting the thickness of this air layer is also provided. With the goal.

When a device generates noise, not only the insulating panel of the prior art does not have a soundproof function, but also the noise is increased. However, in the present invention, the insulating panel has a vibration insulating function, that is, a soundproof function. The purpose is to provide a possible construction method.

[Means for Solving the Problems]

The present inventors have conducted research to solve the above-mentioned problems, piercing a sleeve through a panel, abutting the panel on a mounting location of a device, and forming a tip shape of a drill from the outside of the panel into the sleeve. , Inserting a self-threaded screw that is threaded into the portion following the tip, and screwing the screw from the outside of the panel into the device body or a rib attached to the body,
The inventors have completed the present invention by finding that the problem can be solved by mounting the panel on the device.

That is, according to the present invention, a prefabricated insulating panel in which an insulating core material and an exterior material are integrated is brought into contact with a predetermined position of a device to be mounted, has a flange at one end, and has a sleeve having an inner diameter sufficiently larger than a screw diameter passed through the inside of the panel. Install through multiple points of
A self-threading screw is inserted from the flange side of the sleeve, the self-threading screw is screwed into the device body or a rib attached to the device from the outside of the panel, and the screw is attached to the device. Characterized by mounting the panel on the device by pressing the receiving member with the head of a screw or a washer fitted to the screw, and subsequently mounting a number of prefabricated insulating panels on the surface of the device in the same manner in sequence. This is the equipment insulation method.

Also, when a sleeve having a flange at one end is fixed through at a plurality of points on the prefabricated insulating panel, a spacer of a specified length is attached to the sleeve, and a self-threaded screw is screwed into the device body or the rib attached to the body. The above-mentioned equipment insulation method is designed to maintain a predetermined distance between the inner surface of the panel and the equipment surface.

In the present invention, the insulating panel is attached to the exterior material such as a color iron plate by bonding the insulating core material with an adhesive, by fixing the sleeve through, or by tacking at a plurality of separate locations, or by a combination of these means. In the case of sleeve fixation or tacking, to retain the inner insulating core material,
A washer or a disk having a large area is attached to a sleeve or a tack from the inside to fix the core material to the exterior material with a stopper.

When the insulating core material is a rigid body such as calcium silicate or foamed phenolic resin, the sleeve can be fixed only by the insulating core material and the exterior material, but when using a flexible insulating core material such as rock wool or glass wool. In order to increase the rigidity of the insulation panel as a whole and allow it to stand alone for easy handling, to further strengthen the attachment of the sleeve to the insulation panel, and to prevent the penetration of moisture from the insulation core material from the inside. It is preferable to attach an interior material such as a thin metal plate, preferably a thin zinc iron plate or a thin aluminum plate to the inside.

The through holes for mounting the insulating panel are, for example, in the case of an exterior plate having a width of 800 mm and a length of 2,000 mm, 2 places in the width direction and 3 places in the length direction, for a total of about 6 places.
If it is a 0 mm small exterior plate, 1 or 2 in the center in the width direction
It is preferable to provide a total of 2 or 4 places in the lengthwise direction of 2 places. This is of course determined by the size of the plate and the weight of the insulating panel.

A circular tube is preferable as the sleeve attached to the insulating panel, but a square tube or other rectangular tubes may be used. More preferably, a rotation-stopping rib may be provided on the outer surface to prevent the nut from rotating together with the nut when fixed to the panel.

The flange attached to the sleeve may be a fixed flange, but if desired, the end may be threaded and the flange may be screwed. It is preferable that the flanges are notched in a straight line at the edge facing portions so as to hold the flanges so that they do not rotate when they are screwed from the inside and outside of the panel at the time of mounting, so that parallel portions are formed.

The inside diameter of this sleeve should be much larger than the outside diameter of the self-threaded screw used for mounting. It is preferably about 1.5 to 3 times. Considering only the initial installation, it is sufficient to make the inner diameter of the sleeve slightly larger than the outer diameter of the screw, but the feature of the present invention is that it facilitates the adjustment of the space between the upper, lower, left, and right panels, as well as equipment inspection. At this time, when removing and re-installing the insulation panel, there is a possibility that the panel may be deformed or a slight deviation such as expansion of the equipment may occur, and this may be absorbed, and the temperature of the equipment or panel may change while the equipment is operating. It is a place to deal with expansion and contraction and to provide flexibility, and this point is different from simple screwing.

Further, in order to provide a soundproof effect, it is preferable to lining rubber on the inner surface of the sleeve or insert a rubber tube, but in order to reduce cost, even when omitting this,
A rubber washer is preferably used in combination with the washer between the sleeve flange and the self-threaded screw head.
This is to prevent the vibration transmitted to the screw from being transmitted to the sleeve.

The sleeve of the present invention is not merely a hole for mounting an insulating panel. As described above, it is preferable to mount the outer panel and the inner panel on the insulating panel. However, the outer panel and the inner panel are not in direct contact with each other, but are integrated through the insulating core material. When a flexible core material such as rock wool or glass wool is used as the insulating core material, even if the outer surface and the inner surface are bonded to the exterior plate and the interior plate, respectively, they are mechanically weak and are easy to transport from the factory to the construction site. Also be careful. When the sleeve of the present invention penetrates the panel at a plurality of places, one end is flanged, the other end is threaded to the sleeve, and it is fixed to the panel by a nut or a speed washer, etc. It will be connected at some point, increasing the strength during transportation and storage.

Of course, the sleeve itself may be adhered to the exterior plate and the interior plate with an adhesive.

A metal tube such as a steel tube is convenient for the material of the sleeve, and the cost is low, but other synthetic resin tubes, ceramic tubes, etc. can also be used. Especially, it is convenient for manufacturing when a square tube is used instead of a circular tube. In some cases.

Another feature of the invention is the use of self-threaded screws to mount the insulation panel through this sleeve. This self-threading type screw is a self-drilling tapping screw whose tip has a drill tip shape.
It is a screw with a tapping screw on the part that follows it. Conventionally, when fixing a panel with screws, it was customary to make a screw hole in the device or a rib attached to it beforehand and then screw in the screw from the outside of the panel. It is difficult to drill a screw hole in a panel such as when the panel becomes thicker than 75 mm, because there are restrictions such as tap length and so on. The way was done.
The second feature of the present invention is that a self-threaded screw is used as the mounting screw. This screw is a screw in which a tip-shaped blade of a drill is formed at the tip of a long screw. When this screw is rotated from the outside of the panel through the sleeve hole while pressing against the device or the rib attached to the device, it is perforated by the tip drill blade, and then the screw that follows completes the screwing in one operation.

By using this self-threading type screw, avoid the trouble of drilling a screw hole in the device beforehand and screwing it in from the outside so that it matches the screw hole, or tapping from the outside of the panel. You can

Since the inner diameter of the sleeve is made sufficiently larger than the outer diameter of the self-threaded screw, it is preferable to attach a washer to the head of the screw that is larger than the diameter of the sleeve. Of course, if the head of the screw is made larger than the sleeve diameter, this is not necessary. On the panel side of the washer, it is preferable to apply a washer made of an elastic material such as rubber so as to absorb the elasticity of the panel itself and not transmit the vibration of the device to the panel.

If the depth of screwing into equipment is limited in terms of plate thickness, insert another nut on the head of the self-threading type screw, and screw in the screw at a certain depth. It is preferable that the panel is fixed by stopping the screwing in and then tightening the intermediate nut.

Of course, if the length of the self-threading type screw is determined in advance in consideration of the thickness of the panel, the space between the panel and the device, the screwing depth, etc., this is not necessary.

This is not necessary when the insulation panel is directly attached to the equipment, or when the insulation panel is attached to the rib attached to the equipment and the space between the panel and the equipment is sufficient in the space formed by this rib. When a predetermined space is secured between the two and the double insulation layer is formed by the insulating panel and this space, a spacer having a predetermined length is attached to the inner surface side of the panel of the sleeve.

The sleeve may be attached to the panel at the insulation site,
As described above, in order to increase the strength during transportation and storage from the factory to the site, it is preferable that sleeves are fixed to the panel at a plurality of locations by a fastener such as a nut or an adhesive at the time of manufacturing the factory.

It is preferable that the spacer utilizes a screw on the inner side of the sleeve to form a cylindrical shape or a plate in a U shape and screw an inverted U-shaped spacer having a female thread on the top thereof. The spacers are not limited to these two, but a large-diameter washer is screwed into the inside of the sleeve, and legs with a length corresponding to the length of multiple spacers are attached to this by welding or screwing. Any shape can be used as long as it maintains a predetermined distance between the sleeve and the device, such as a shaped spacer.

The mounting of the spacer on the sleeve is not limited to screwing into the sleeve, but a hole through which the sleeve penetrates is made in the spacer, and this is fitted into the sleeve and fixed with a fastener such as a nut or speed washer or adhesive. May be.

In this way, it is convenient for the spacer to be fixed to the sleeve at the factory site for transportation and storage from the factory to the site, but if the spacer length is not so long, increase the sleeve length. Needless to say, it may be made to project in advance and also serve as a spacer.

In the conventional method of attaching a mounting rod such as a stud bolt to the arrangement dimension of the mounting hole of the insulating panel and pre-welding to the equipment outer plate, distortion of the equipment outer plate which is a can-making product, expansion due to temperature change, Due to shrinkage and variation in the dimensions of the insulating panel itself, even if the first panel matches the mounting hole, the position of the mounting rod and the hole of the insulating panel gradually deviate due to the positional deviation.

In the present invention, the adjoining panels and the exterior plate angular wave portion that have been sequentially mounted are overlapped and continuous to prevent entry of rain or the like,
In this way, the insulating panel is brought into contact with the mounting position that is determined by the connection relationship with the insulating panel, with the sleeve tip end or the spacer tip end touching the device outer plate or the rib attached to the device, and in this state, Insert a self-threaded screw into the sleeve tube from the outside of the insulating panel, rotate it while pressing it toward the equipment side, drill a lower screw hole and screw the screw at the same time to insert the spacer tip or sleeve tip into the equipment. And press it to fix it.

This attaches the insulating panel to the outer surface of the device.

This is the most essential part of the present invention. This eliminates the problem of misalignment and eliminates the need for a frame or frame for mounting the panel.

Since the insulating panel has rigidity in the lengthwise direction, it is preferable that an insulating material is adhered to an exterior plate such as a square wave steel plate or a square wave color iron plate provided with groove folds in the lengthwise direction. In order to prevent rainwater from entering the exterior plate by completely connecting it to the adjacent panel, only one angular wave peak is projected outward at the end of the short side, and one angular wave peak is internal at the opposite side. When they are mounted adjacent to each other, the square waves overlap each other to complete the connection between the panels and prevent rainwater from entering. Also in the vertical direction of the exterior plate, the exterior plate is protruded from the insulating material and overlapped with the lower insulating panel.

Any insulating material such as rock wool, glass wool, calcium silicate, foamed phenolic resin, urethane foam can be used as the insulating material, but inorganic fibers such as rock wool and glass wool are bonded especially in the direction perpendicular to the exterior plate. However, an insulating panel is preferable because it has strength in each direction and has high heat resistance.

In this way, a large number of insulating panels are sequentially mounted adjacent to each other on the outer surface of the equipment, but rainwater is sufficiently invaded by the overlapping of the angular waves in the width direction and the protrusion of the exterior plate downward in the length direction. Can be prevented.

If necessary, the space between the upper insulation panel and the next lower insulation panel is called the joiner, the upper half is the inside of the upper insulation panel, and the lower half is the colored iron plate that covers the outside of the lower insulation panel. Insert the manufactured bent plate,
It can also prevent rainwater from entering. But this is not mandatory.

Of course, the upper and lower ends of the air layer between the insulating panel and the device outer plate are sealed with an insulating waterproof material to prevent air flow. If necessary, dry air can be passed through this portion to dry the skin and the insulating material.

〔Example〕

The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

An insulating panel as shown in a sectional view in FIG. 3 and an elevational view in FIG. 4 was used. Exterior plate 1 is a square wave color iron plate (0.4 mm thick)
Is. FIG. 3 shows a square wave protrusion for mating with an insulating panel. Reference numeral 17 is a square wave that is subjected to superposition of insulating panels. The reference numeral 2 is rock wool having a thickness of 75 mm. It is a rock wool slab whose fiber direction is perpendicular to the exterior plate.

An inner plate 3 made of a zinc iron plate is adhered to the insulating panel on the side opposite to the outer plate. The exterior plate is also adhered to the rock wool slab 2 with an adhesive, and FIG. 4 shows mounting through holes.

A sleeve (4 in FIGS. 1 and 2) is further fitted into the mounting through hole 18 in the shape as shown in FIGS. 3 and 4. When attaching to the rib on the equipment surface, attach the sleeve to the position on the insulating panel that matches the position of the rib in advance. Here, the upper end is used as a fixing flange, and the other end is adhered to the interior plate with an adhesive in FIG. 1, the outer surface of the sleeve is threaded in FIG. 2, and the nut 12 or a speed washer or the like is attached to the insulating panel. This shape is manufactured at the factory and transported to the work site.

FIG. 1 is a cross-sectional view illustrating an insulating panel mounting method, which is the core of the present invention. (The upper part of the sleeve and the part above the flange are shown in an elevation view, not a cross-sectional view of the sleeve and the self-threaded screw head, for explanation.) In FIG. 1, the height of the rib 10 attached to the device 11 is shown. The purpose is to secure a space only between the outer surface of the device and the panel, and the sleeve is attached in advance by determining the position on the insulating panel according to the position of the rib on the surface of the device. The panel is directly attached to the rib. In such a case, there is no problem even if the drill portion at the tip of the self-threading type screw passes through the rib.

The insulating panels 1, 2 and 3 to which the sleeve 4 is attached are brought into contact with the ribs 10 at predetermined positions, and self-threaded type screws (Tex screw) (trade name) 8 are screwed from the outer surface of the panel to the ribs 10 through the sleeve holes. Put in. 9 is a drill blade portion at the tip of the screw.

At this time, a washer 7 and a rubber washer 6 are inserted between the head of the screw 8 and the flange 5 of the sleeve.

The self-threading type screw 8 is called the self-drilling tapping screw in English, and while drilling a screw hole with the drill blade 9 at the tip, screw it into the rib 10 while cutting the screw by the subsequent thread. It is what is done. Thus, the sleeve tip is pressed against the rib and fixed, so that the panel is attached to the rib.

As shown in FIG. 2, the sleeve 4 is shipped from the factory by threading the nut and attaching the sleeve to the panel with the nut 12. At the factory site, an inverted U-shaped spacer 13 is attached to the tip of the sleeve with a speed washer 14.

In this state, the self-threaded screw 8 is inserted from the outside of the panel through the sleeve hole from the outside of the panel, and is rotated while pressing the device to make a screw hole. Screw in.

There is no concern if the length of the self-threading type screw is selected in consideration of the screwing depth and the height of the spacer, but in general, a nut such as 15 in Fig. 2 is used. , Judging by the head of the screw, when the screw tip is screwed into the device outer plate to a certain depth, tighten the nut 15,
The insulating panel is attached to the device by pressing the tip of the spacer 13 against the device 11.

〔The invention's effect〕

The device insulation method of the present invention has various effects as described below.

(1) Shortening of on-site construction period: Since the prefabricated insulating panels with the sleeves used in the present invention are all prefabricated in a factory or a work place in advance and brought to the site for assembly, the on-site construction The construction period is significantly shortened.

(2) No need to attach a frame or mounting frame: The frame and mounting frame, which were the biggest drawbacks of the conventional equipment insulation method, are no longer needed, and if the sleeve position is determined according to the position of the rib on the device surface Good, and when the thickness of the device outer plate is sufficiently thick, it can be directly attached to an arbitrary position of the device outer plate, and the construction period at the site can be further shortened.

(3) No need for scaffolding: Since it is a prefabricated construction method and does not require a skeleton, it can be constructed by a worker on a gondola, and costly and labor-free scaffolding is unnecessary.

(4) Unaffected by thermal expansion and contraction of equipment: The insulating panel of the present invention can be used even if the spacer from the equipment outer plate is the smallest.
It is stretched slightly apart, and since there is a play gap between the self-threaded screw and the pipe, it expands and contracts like the one that sprays or injects urethane foam directly on the equipment surface. Does not cause cracks.

(5) Very high thermal and vibration insulation effect: There is an air layer, an insulation panel and two insulation layers between the outer surface of the equipment and the outside air, and the air layer is sealed. It has an extremely excellent insulation effect. Further, not only thermal insulation but also vibration insulation effect, especially when a rubber material having a vibration damping effect is inserted between the sleeve and the self-threaded screw, the effect is further exerted. That is, even when the device vibrates, it has a vibration insulation effect of soundproofing and vibrationproofing.

(6) Uniform insulation layer: Conventionally, when urethane foam is used as an insulation material, the on-site foaming and injection method are
Due to external conditions such as humidity and wind, surface irregularities and air pockets may form in the foam. Since the present invention is molded in a factory even when urethane foam is used as an insulating material, an insulating layer having a smooth surface and a uniform finish is obtained.

(7) Expansion of safe operating temperature: Since there is a space between the insulation panel and the surface of the equipment, it is possible to use insulation materials with low heat resistance that could not be used in the past where insulation material was in direct contact with equipment. Originally high heat-resistant materials such as rock wool, the safe operating temperature will be higher,
The range of use is expanded.

(8) No adverse effects due to rainwater intrusion: The conventional urethane method is weak against rainwater and absorbs rainwater into the foam,
There is a risk of equipment corrosion, and the thermal conductivity increased by absorbing water, which hindered the insulation effect.However, since the present invention uses a color iron plate for the exterior plate, urethane is used for the insulation material. Even when it does, there is no risk of rainwater absorption and therefore no risk of equipment corrosion.

(9) Exterior is elegant and robust: If the exterior plate is a colored iron plate, the appearance is elegant and it is extremely robust because it is fixed to the device body.

(10) Easy to inspect and repair after construction: In the present invention, since it can be easily removed by removing the self-threading type screw after once installed, it is possible to inspect the outer surface of the equipment by the Fire Defense Law, etc. and damage it. When the panel is replaced, the panel is standardized and a play is provided around the screw, so that inspection and repair are easy and economical.

(11) Economical construction cost: In the present invention, scaffold construction,
There is no need to install a skeleton, and the prefabricated structure improves efficiency and shortens the construction period, which can greatly reduce construction costs.

(12) Since self-threaded screws do not generate sparks during construction, construction is possible even in places where fire is strictly prohibited.

The insulating plate of the present invention is entirely covered with an iron plate even when a flammable material is used as an insulating material, does not use fire during construction, and is strong against fire even during operation of the device, preventing accidents. This is an extremely effective construction method.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a mounting portion for explaining an insulating panel mounting method of the present invention. FIG. 2 is a partially cutaway sectional view showing a modified example of FIG. FIG. 3 is a cross-sectional view of the prefabricated insulating panel in the width direction. FIG. 4 is an elevational view of a prefabricated insulating panel.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroaki Umezono 1-5-12 Sumie, Sumiyoshi-ku, Osaka City, Osaka Prefecture

Claims (2)

[Claims] 1. A sleeve made of a prefabricated insulating panel in which an insulating core material and an exterior material are integrated is brought into contact with a predetermined location of a device to be mounted, has a flange at one end, and has an inner diameter sufficiently larger than a screw diameter passed through the inside. It is installed by penetrating through a plurality of points on the panel, the self-threading type screw is inserted from the flange side of the sleeve, and the self-threading type screw is screwed from the outside of the panel to the device body or the rib attached to the body. The screw is attached to the device, and the panel is attached to the device by pressing the receiving member with the head of the screw or a washer fitted to the screw. An equipment insulation method characterized in that the equipment is mounted on the surface of the equipment one after another. 2. A rib which has a sleeve having a flange at one end and which penetrates a prefabricated insulating panel at a plurality of positions, a spacer having a predetermined length is attached to the sleeve, and a self-threaded screw is attached to the device main body or the main body. The method for insulating a device according to claim 1, wherein a predetermined distance is maintained between the inner surface of the panel and the surface of the device when the device is screwed into.