CN109695781B - High temperature pipeline thermal insulation wall penetrating structure and folding sleeve thereof - Google Patents

Abstract

The invention discloses a high-temperature pipeline heat insulation wall penetrating structure and a folding sleeve thereof, wherein the high-temperature pipeline heat insulation wall penetrating structure comprises: folding sleeve, high temperature pipeline, wall body; the folding sleeve is provided with a channel corresponding to the high-temperature pipeline, and the extension direction of the channel is parallel to the axial direction of the folding sleeve; the side wall of the folding sleeve is formed by folding a folding plate back along the axial direction of the folding sleeve; the end of the folded plate, which is far away from the channel, extends outwards along the radial direction of the folded sleeve and forms a connecting part for connecting with the wall body; the wall body is provided with a mounting hole corresponding to the folding sleeve, and the folding sleeve penetrates through the mounting hole; the high-temperature pipeline penetrates through the channel, so that the side wall of the folding sleeve is clamped between the high-temperature pipeline and the wall body. The invention effectively reduces the temperature of the wall body at the position of the pipeline, and avoids the damage of the wall body caused by high temperature, the deformation of thermal stress and the high-temperature damage of other parts on the wall body. And the folding sleeve has displacement compensation capacity due to the folding structure, and vibration slippage of the high-temperature pipeline is effectively prevented.

Description

High temperature pipeline thermal insulation wall penetrating structure and folding sleeve thereof

Technical Field

The invention relates to the technical field of high-temperature pipeline heat insulation, in particular to a high-temperature pipeline heat insulation wall penetrating structure and a folding sleeve thereof.

Background

During the heat insulation transportation process of pipelines for flowing high-temperature media such as high-temperature flue gas, tail gas or steam, the pipelines often pass through wall bodies such as box body walls and walls, some wall bodies cannot resist high-temperature environments, and meanwhile, displacement, vibration and the like of different degrees can occur in three-dimensional directions during the working process of some pipelines, so that the pipelines are required to be firmly fixed on the wall bodies when passing through the wall bodies.

However, the high-temperature pipeline is usually rigidly fixed to the wall body directly by the metal structure, and the metal structure has a large heat conductivity coefficient, so that the high-temperature pipeline is very easy to conduct heat to the wall body, on one hand, heat loss of the high-temperature pipeline is caused, and on the other hand, the wall body and other attachments on the wall body are damaged by high temperature. If the existing heat insulation material is used for coating the pipeline through wall and carrying out rigid fixation, the pipeline cannot be stably fixed on the wall body due to the soft property of the heat insulation material, and if the vacuum heat insulation pipeline is used for penetrating through the wall and carrying out rigid fixation, the vacuum interlayer is easy to be pulled, deformed and even damaged when the pipeline vibrates violently, so that the service life of the vacuum interlayer is short.

Disclosure of Invention

The invention aims to provide a high-temperature pipeline heat insulation wall penetrating structure and a folding sleeve thereof, which can prolong a heat conduction path between a high-temperature heat pipe and a wall body, increase heat conduction resistance and reduce heat transfer of the high-temperature pipeline to the wall body; the temperature of the wall body at the position of a pipeline is effectively reduced, and the damage to the wall body caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body are avoided; preferably, the side wall of the folding sleeve is of a folding structure and is arranged between the high-temperature pipeline and the wall body, and the folding sleeve has displacement compensation capacity due to the fact that a hollow interlayer is formed by the folding structure, and vibration sliding of the high-temperature pipeline is effectively prevented; the invention has simple and compact structure, convenient installation, replacement and disassembly, and good practicability and adaptability.

The technical scheme provided by the invention is as follows:

a high temperature pipe insulation through-wall structure comprising:

folding sleeve, high temperature pipeline, wall body;

the folding sleeve is provided with a channel corresponding to the high-temperature pipeline, and the extending direction of the channel is parallel to the axial direction of the folding sleeve;

the side wall of the folding sleeve is formed by folding a folding plate back along the axial direction of the folding sleeve; the end of the flap on the side away from the channel extends outwards in the radial direction of the folding sleeve and forms a connection part for connecting with the wall body;

the wall body is provided with a mounting hole corresponding to the folding sleeve, and the folding sleeve penetrates through the mounting hole; the high-temperature pipeline penetrates through the channel, so that the side wall of the folding sleeve is clamped between the high-temperature pipeline and the wall body.

In the technical scheme, the heat conduction path between the high-temperature heat pipe and the wall body is prolonged by folding the sleeve (the number of times of folding is one or more than one time), the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline to the wall body is reduced; the temperature of the wall body at the position of a pipeline is effectively reduced, and the damage to the wall body caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body are avoided; preferably, the side wall of the folding sleeve is of a folding structure and is arranged between the high-temperature pipeline and the wall body, and the folding sleeve has displacement compensation capacity due to the fact that a hollow interlayer is formed by the folding structure, and vibration sliding of the high-temperature pipeline is effectively prevented; the invention has simple and compact structure, convenient installation, replacement and disassembly, and good practicability and adaptability.

Further preferably, the hollow interlayer formed by folding the folded plate back is filled with an insulating layer.

In the technical scheme, the heat-insulating layer reduces the heat radiation effect of the wall penetrating structure of the folding sleeve on the environment, so that the heat transfer resistance of the folding sleeve is further improved.

Further preferably, the channel is formed by surrounding the heat insulation layer arranged close to one side of the channel.

In this technical scheme, through heat preservation parcel high temperature pipeline, effectively weaken high temperature pipeline to folding telescopic thermal radiation, natural convection and air heat conduction effect.

Further preferably, the number of times the flap is folded back is proportional to the temperature of the high temperature pipe; or the folding plate is in direct proportion to the temperature of the high-temperature pipeline along the axial direction of the folding sleeve, and the folding plate is in inverse proportion to the times of folding the folding plate along the axial direction of the folding sleeve.

In this technical scheme, set up folding telescopic inflection number of times according to the high temperature pipeline on different temperature layers to reduce its cost when guaranteeing folding telescopic heat-proof quality, and reduce folding telescopic structure volume. Of course, when the folding length of the folded plate is longer, the folding times of the folded plate can be correspondingly reduced, so that the radial size of the folding sleeve is reduced; the above specific embodiments can be set according to actual needs.

Further preferably, the flaps comprise straight panels extending in the axial direction of the folding sleeve, and corner panels extending in the radial direction of the folding sleeve; the thickness dimension of the corner plate is larger than that of the straight plate.

Among this technical scheme, turning board thickness size sets up thick some in order to improve folding telescopic structural strength, prolongs its life.

The present invention also provides a folding sleeve, wherein,

the folding sleeve is provided with a channel corresponding to the high-temperature pipeline, and the extending direction of the channel is parallel to the axial direction of the folding sleeve;

the side wall of the folding sleeve is formed by folding a folding plate back along the axial direction of the folding sleeve; the end of the flap on the side remote from the passage extends outward in the radial direction of the folding sleeve and forms a connection for connecting to a wall.

In the technical scheme, the heat conduction path between the high-temperature heat pipe and the wall body is prolonged by folding the sleeve (the folding times are one or more than one time), so that the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline to the wall body is reduced; the temperature of the wall body at the position of a pipeline is effectively reduced, and the damage to the wall body caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body are avoided; preferably, the side wall of the folding sleeve is of a folding structure and is arranged between the high-temperature pipeline and the wall body, and the folding sleeve has displacement compensation capacity due to the fact that a hollow interlayer is formed by the folding structure, and vibration sliding of the high-temperature pipeline is effectively prevented; the invention has simple and compact structure, convenient installation, replacement and disassembly, and good practicability and adaptability.

Further preferably, the hollow interlayer formed by folding the folded plate back is filled with an insulating layer.

In the technical scheme, the heat-insulating layer reduces the heat radiation effect of the wall penetrating structure of the folding sleeve on the environment, so that the heat transfer resistance of the folding sleeve is further improved.

Further preferably, the channel is formed by surrounding the heat insulation layer arranged close to one side of the channel.

In this technical scheme, through heat preservation parcel high temperature pipeline, effectively weaken high temperature pipeline to folding telescopic thermal radiation, natural convection and air heat conduction effect.

Further preferably, the number of times the flap is folded back is proportional to the temperature of the high temperature pipe; or the folding plate is in direct proportion to the temperature of the high-temperature pipeline along the axial direction of the folding sleeve, and the folding plate is in inverse proportion to the times of folding the folding plate along the axial direction of the folding sleeve.

In this technical scheme, set up folding telescopic inflection number of times according to the high temperature pipeline on different temperature layers to reduce its cost when guaranteeing folding telescopic heat-proof quality, and reduce folding telescopic structure volume. Of course, when the folding length of the folded plate is longer, the folding times of the folded plate can be correspondingly reduced, so that the radial size of the folding sleeve is reduced; the above specific embodiments can be set according to actual needs.

Further preferably, the flaps comprise straight panels extending in the axial direction of the folding sleeve, and corner panels extending in the radial direction of the folding sleeve; the thickness dimension of the corner plate is larger than that of the straight plate.

Among this technical scheme, turning board thickness size sets up thick some in order to improve folding telescopic structural strength, prolongs its life.

The high-temperature pipeline heat insulation wall penetrating structure and the folding sleeve thereof provided by the invention can bring at least one of the following beneficial effects:

1. in the invention, the heat conduction path between the high-temperature heat pipe and the wall body is prolonged by folding the sleeve (the folding times are one or more than one time), the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline to the wall body is reduced; the temperature of the wall body at the position of a pipeline is effectively reduced, and the damage to the wall body caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body are avoided; preferably, the side wall of the folding sleeve is of a folding structure and is arranged between the high-temperature pipeline and the wall body, and the folding sleeve has displacement compensation capacity due to the fact that a hollow interlayer is formed by the folding structure, and vibration sliding of the high-temperature pipeline is effectively prevented; the invention has simple and compact structure, convenient installation, replacement and disassembly, and good practicability and adaptability.

2. In the invention, the heat-insulating layer reduces the heat radiation effect of the wall penetrating structure of the folding sleeve on the environment, thereby further improving the heat conduction resistance of the folding sleeve. More preferably, wrap up the high temperature pipeline through the heat preservation, effectively weaken the high temperature pipeline to folding telescopic heat radiation, natural convection and air heat conduction effect.

Drawings

The above features, technical features, advantages and modes of realisation of the high temperature pipe insulating through-wall structure and its folding sleeve will be further described in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.

FIG. 1 is a schematic cross-sectional view of an embodiment of the high temperature pipeline heat insulation through-wall structure of the present invention;

FIG. 2 is a schematic structural view of another embodiment of the high-temperature pipeline heat-insulating through-wall structure of the invention.

The reference numbers illustrate:

1. the high-temperature pipeline comprises a high-temperature pipeline body, 2 parts of first connecting pieces, 3 parts of fastening platforms, 4 parts of folding sleeves, 41 parts of connecting parts, 42 parts of straight plates, 43 parts of corner plates, 5 parts of insulating layers, 6 parts of second connecting pieces and 7 parts of wall bodies.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one". In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In one embodiment, as shown in fig. 1 and 2, a high temperature pipeline heat insulation through-wall structure comprises: the folding sleeve 4, the high-temperature pipeline 1 and the wall body 7; the folding sleeve 4 is provided with a channel corresponding to the high-temperature pipeline 1, and the extension direction of the channel is parallel to the axial direction of the folding sleeve 4; the side wall of the folding sleeve 4 is formed by folding a folded plate back along the axial direction of the folding sleeve 4; the end of the flap on the side remote from the passage extends outward in the radial direction of the folding sleeve 4 and forms a connection 41 for connection to the wall 7; the wall body 7 is provided with a mounting hole corresponding to the folding sleeve 4, and the folding sleeve 4 penetrates through the mounting hole; the high temperature pipeline 1 is provided with a passage in a penetrating way, so that the side wall of the folding sleeve 4 is clamped between the high temperature pipeline 1 and the wall body 7. In practical application, the high-temperature pipeline 1 is not directly contacted with the wall body 7 any more, so that the heat of the high-temperature pipeline 1 needs to be transferred through the folding sleeve 4, but the folding sleeve 4 is of a folding structure folded along the axial direction, so that the transfer path of the heat is greatly lengthened, the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline 1 to the wall body 7 is reduced; the temperature of the pipeline connected with the wall body 7 is effectively reduced, and the damage to the wall body 7 caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body 7 are avoided; more excellent, because the lateral wall of folding sleeve 4 is the inflection structure and sets up between high temperature pipeline 1 and wall body 7, because the inflection structure can form the cavity intermediate layer for folding sleeve 4 has displacement compensation ability, effectively prevents that the vibration of high temperature pipeline 1 from sliding. In practical applications, the cross-sectional shape of the high-temperature pipeline 1 may be regular or irregular, such as a circular pipe or a square pipe, and correspondingly, the channel is adapted to the cross-sectional shape of the high-temperature pipeline 1.

In the second embodiment, as shown in fig. 1 and 2, on the basis of the first embodiment, the end of the folded plate close to the high temperature pipe 1 abuts against the high temperature pipe 1, so that the contact surface between the folded plate and the high temperature pipe 1 is the side wall of the folded plate, that is, a hollow interlayer is arranged between the folded plate and the high temperature pipe 1, and the contact surface between the folded plate and the high temperature pipe 1 is greatly reduced. The effect of the contact between the side wall of the folded plate and the high-temperature pipeline 1 is higher than that of the contact between the straight plate of the folded plate and the high-temperature pipeline 1, and of course, in practical application, the straight plate of the folded plate can also contact with the high-temperature pipeline 1. Preferably, the hollow sandwich formed by the folded flaps is filled with an insulating layer 5. Preferably, the channel is surrounded by an insulating layer 5 arranged adjacent to one side of the channel. Preferably, the insulation layer 5 may be an aerogel insulation layer, a thermal insulation coating, an insulation board, insulation wool, or the like. Of course, in practical applications, the channel may be formed by enclosing the folded plate, and the present invention shall also fall within the protection scope of the present invention.

In the third embodiment, as shown in fig. 1 and 2, on the basis of the first or second embodiment, the number of times of folding back of the flap is proportional to the temperature of the high-temperature pipe 1. Preferably, the flaps comprise a straight panel 42 extending in the axial direction of the folding sleeve 4, and corner panels 43 extending in the radial direction of the folding sleeve 4; the thickness dimension of corner plate 43 is greater than the thickness dimension of straight plate 42. In practical applications, the corner plate 43 is used to connect two adjacent straight plates 42, so that two adjacent straight plates 42 and one corner plate 43 form a hollow sandwich with an opening. Preferably, the flaps are preferably stainless steel flaps, titanium alloy flaps, or other sheet material having a relatively low thermal conductivity. Preferably, the thickness dimension of the straight plate 42 is 0.5-2 mm. It is worth mentioning that, in order to reduce the radial dimension of the folding sleeve 4 and ensure the cooling efficiency of the folding sleeve 4, the folding length of the folded plate along the axial direction of the folding sleeve 4 (i.e. the length of the straight plate along the axial direction of the folding sleeve 4) is proportional to the temperature of the high temperature pipe 1, and the folding length of the folded plate along the axial direction of the folding sleeve 4 is inversely proportional to the number of times the folded plate is folded. That is, when the length of turning back of folded plate is longer, the number of times of turning back of reduction folded plate that can correspond to reduce the radial dimension of folding sleeve 4, specific implementation can set up according to actual need.

Exemplarily, as shown in fig. 1 and 2, the temperature of the flue gas flowing through the high temperature pipe 1 of the heat insulation wall-penetrating structure of the high temperature pipe 1 is as high as 800 ℃, the specification of the high temperature pipe 1 is the diameter D20X2, the folded plate of the folding sleeve 4 is folded back 3 times, and when the length of the one-way folded plate is 30cm, the temperature of the perforated part (i.e. the mounting hole) of the wall body 7 can be reduced to normal temperature, the cooling effect is very obvious, and the vibration displacement phenomenon of the pipe can be compensated.

In the fourth embodiment, as shown in fig. 1 and 2, on the basis of the first, second or third embodiment, the high-temperature pipeline 1 is preferably connected with the folding sleeve 4 through the fastening table 3, that is, the fastening table 3 is disposed on the end surface of the folding sleeve 4 far from the connecting portion 41, so that after the high-temperature pipeline 1 sequentially penetrates through the folding sleeve 4 and the fastening table 3, the fastening table 3 is preferably connected with the high-temperature pipeline 1 by welding, and the fastening table 3 is preferably connected with the folding sleeve 4 through the first connecting member 2. Preferably, the connecting portion 41 is disposed at a middle position of the folding sleeve 4, so that the connecting portion 41 overlaps the wall body 7, and the connecting portion 41 and the wall body 7 are connected by the second connecting member 6, thereby fixing the folding sleeve 4 to the wall body 7. Preferably, the fastening platform 3 is detachably connected to the folding sleeve 4, the folding sleeve 4 is detachably connected to the wall 7, and the first connecting member 2 and the second connecting member 6 may be screws, bolts, or screws.

In the fifth embodiment, as shown in fig. 1 and 2, a folding sleeve is provided, wherein the folding sleeve 4 is provided with a channel corresponding to the high-temperature pipeline 1, and the extending direction of the channel is parallel to the axial direction of the folding sleeve 4; the side wall of the folding sleeve 4 is formed by folding a folded plate back along the axial direction of the folding sleeve 4; the end of the flap on the side remote from the passage extends in the radial direction of the folding sleeve 4 and forms a connection 41 for connection to the wall 7. In practical application, the high-temperature pipeline 1 is not directly contacted with the wall body 7 any more, so that the heat of the high-temperature pipeline 1 needs to be transferred through the folding sleeve 4, but the folding sleeve 4 is of a folding structure folded along the axial direction, so that the transfer path of the heat is greatly lengthened, the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline 1 to the wall body 7 is reduced; the temperature of the pipeline connected with the wall body 7 is effectively reduced, and the damage to the wall body 7 caused by high temperature, thermal stress deformation and high-temperature damage to other parts on the wall body 7 are avoided; more excellent, because the lateral wall of folding sleeve 4 is the inflection structure and sets up between high temperature pipeline 1 and wall body 7, because the inflection structure can form the cavity intermediate layer for folding sleeve 4 has displacement compensation ability, effectively prevents that the vibration of high temperature pipeline 1 from sliding.

In the sixth embodiment, as shown in fig. 1 and 2, on the basis of the fifth embodiment, the end of the folded plate close to the high temperature pipe 1 abuts against the high temperature pipe 1, so that the contact surface between the folded plate and the high temperature pipe 1 is the side wall of the folded plate, that is, a hollow interlayer is arranged between the folded plate and the high temperature pipe 1, and the contact surface between the folded plate and the high temperature pipe 1 is greatly reduced. The effect of the contact between the side wall of the folded plate and the high-temperature pipeline 1 is higher than that of the contact between the straight plate of the folded plate and the high-temperature pipeline 1, and of course, in practical application, the straight plate of the folded plate can also contact with the high-temperature pipeline 1. Preferably, the hollow sandwich formed by the folded flaps is filled with an insulating layer 5. Preferably, the channel is surrounded by an insulating layer 5 arranged adjacent to one side of the channel. Preferably, the insulation layer 5 may be an aerogel insulation layer, a thermal insulation coating, an insulation board, insulation wool, or the like. Of course, in practical applications, the channel may be formed by enclosing the folded plate, and the present invention shall also fall within the protection scope of the present invention.

In the seventh embodiment, as shown in fig. 1 and 2, the number of times the flap is folded back is proportional to the temperature of the high temperature pipe 1 on the basis of the fifth or sixth embodiment. Preferably, the flaps comprise a straight panel 42 extending in the axial direction of the folding sleeve 4, and corner panels 43 extending in the radial direction of the folding sleeve 4; the thickness dimension of corner plate 43 is greater than the thickness dimension of straight plate 42. In practical applications, the corner plate 43 is used to connect two adjacent straight plates 42, so that two adjacent straight plates 42 and one corner plate 43 form a hollow sandwich with an opening. Preferably, the flaps are preferably steel flaps, titanium alloy flaps, or other sheet materials with a low thermal conductivity, or the like. Preferably, the thickness dimension of the straight plate 42 is 0.5-2 mm.

Exemplarily, as shown in fig. 1 and 2, the temperature of the flue gas flowing through the high temperature pipe 1 of the heat insulation wall-penetrating structure of the high temperature pipe 1 is as high as 800 ℃, the specification of the high temperature pipe 1 is the diameter D20X2, the folded plate of the folding sleeve 4 is folded back 3 times, and when the length of the one-way folded plate is 30cm, the temperature of the perforated part (i.e. the mounting hole) of the wall body 7 can be reduced to normal temperature, the cooling effect is very obvious, and the vibration displacement phenomenon of the pipe can be compensated.

In the eighth embodiment, as shown in fig. 1 and 2, on the basis of the fifth, sixth or seventh embodiment, the high-temperature pipeline 1 is preferably connected with the folding sleeve 4 through the fastening table 3, that is, the fastening table 3 is arranged on the end face of the folding sleeve 4 far from the connecting part 41, so that after the high-temperature pipeline 1 sequentially penetrates through the folding sleeve 4 and the fastening table 3, the fastening table 3 is preferably connected with the high-temperature pipeline 1 by welding, and the fastening table 3 is preferably connected with the folding sleeve 4 through the first connecting part 2. Preferably, the connecting portion 41 is disposed at a middle position of the folding sleeve 4, so that the connecting portion 41 overlaps the wall body 7, and the connecting portion 41 and the wall body 7 are connected by the second connecting member 6, thereby fixing the folding sleeve 4 to the wall body 7. Preferably, the fastening platform 3 is detachably connected to the folding sleeve 4, the folding sleeve 4 is detachably connected to the wall 7, and the first connecting member 2 and the second connecting member 6 may be screws, bolts, or screws. It should be noted that the foldable sleeve 4 can be applied to other parts, such as cabinets, structures, etc., which do not resist high temperature, besides the wall body.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. A high temperature pipeline thermal insulation wall penetrating structure is characterized by comprising:

folding sleeve, high temperature pipeline, wall body;

the folding sleeve is provided with a channel corresponding to the high-temperature pipeline, and the extending direction of the channel is parallel to the axial direction of the folding sleeve;

the side wall of the folding sleeve is formed by folding a folding plate back along the axial direction of the folding sleeve; the end of the flap on the side away from the channel extends outwards in the radial direction of the folding sleeve and forms a connection part for connecting with the wall body;

the wall body is provided with a mounting hole corresponding to the folding sleeve, and the folding sleeve penetrates through the mounting hole; the high-temperature pipeline penetrates through the channel, so that the side wall of the folding sleeve is clamped between the high-temperature pipeline and the wall body;

the heat conduction path between the high-temperature pipeline and the wall body is prolonged through the folding back of the folding sleeve, the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline to the wall body is reduced.

2. The high temperature pipeline heat insulating through-wall structure of claim 1, wherein:

the hollow interlayer formed by folding the folded plate back is filled with an insulating layer.

3. The high temperature pipeline heat insulating through-wall structure of claim 2, wherein:

the channel is formed by the surrounding of the heat-insulating layer arranged close to one side of the channel.

4. The high temperature pipeline heat insulating through-wall structure of claim 1, wherein:

the folding plate is folded for times in direct proportion to the temperature of the high-temperature pipeline; or the like, or, alternatively,

the folding plate is in direct proportion to the temperature of the high-temperature pipeline along the axial direction of the folding sleeve, and the folding plate is in inverse proportion to the times of folding the folding plate along the axial direction of the folding sleeve.

5. The high-temperature pipeline heat-insulating through-wall structure as claimed in any one of claims 1 to 4, wherein:

the folded plate comprises a straight plate extending along the axial direction of the folding sleeve and a corner plate extending along the radial direction of the folding sleeve;

the thickness dimension of the corner plate is larger than that of the straight plate.

6. A folding sleeve, comprising:

the folding sleeve is provided with a channel corresponding to the high-temperature pipeline, and the extending direction of the channel is parallel to the axial direction of the folding sleeve;

the side wall of the folding sleeve is formed by folding a folding plate back along the axial direction of the folding sleeve; the end of the flap on the side away from the channel extends outwards along the radial direction of the folding sleeve and forms a connecting part for connecting with a wall body;

the heat conduction path between the high-temperature pipeline and the wall body is prolonged through the folding back of the folding sleeve, the heat conduction resistance is increased, and the heat transfer of the high-temperature pipeline to the wall body is reduced.

7. A folding sleeve according to claim 6, wherein:

the hollow interlayer formed by folding the folded plate back is filled with an insulating layer.

8. A folding sleeve according to claim 7, wherein:

the channel is formed by the surrounding of the heat-insulating layer arranged close to one side of the channel.

9. A folding sleeve according to claim 6, wherein:

the folding plate is folded for times in direct proportion to the temperature of the high-temperature pipeline; or the like, or, alternatively,

the folding plate is in direct proportion to the temperature of the high-temperature pipeline along the axial direction of the folding sleeve, and the folding plate is in inverse proportion to the times of folding the folding plate along the axial direction of the folding sleeve.

10. A folding sleeve according to any one of claims 6 to 9, wherein:

the folded plate comprises a straight plate extending along the axial direction of the folding sleeve and a corner plate extending along the radial direction of the folding sleeve;

the thickness dimension of the corner plate is larger than that of the straight plate.

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