CN210890616U - Compound heat-preservation prefabricated overhead steam heat-preservation pipe - Google Patents
Compound heat-preservation prefabricated overhead steam heat-preservation pipe Download PDFInfo
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- CN210890616U CN210890616U CN201921650941.4U CN201921650941U CN210890616U CN 210890616 U CN210890616 U CN 210890616U CN 201921650941 U CN201921650941 U CN 201921650941U CN 210890616 U CN210890616 U CN 210890616U
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Abstract
The utility model discloses a composite heat-preservation prefabricated overhead steam heat-preservation pipe, which relates to the field of heat distribution pipelines and comprises a steam pipe, wherein a shell is sleeved on the steam pipe, and a glass wool layer, a supporting layer and a foam layer are arranged between the steam pipe and the shell; the cotton layer parcel of glass sets up in steam pipe week side, and the supporting layer sets up between foam layer and the cotton layer of glass, and the foam layer is filled and is set up between supporting layer and shell. Aiming at the problem of high manufacturing cost in the prior art, the utility model increases the ratio of glass wool in the heat-insulating pipe, thereby reducing the ratio of foam layer, further reducing the production cost of the heat-insulating pipe, and being convenient for popularization and application; in addition, because the cotton layer of glass is stronger than the high temperature resistance ability on foam layer, the utility model discloses in set up the cotton layer of glass near steam pipe week side, can also effectively improve the security that the insulating tube used.
Description
Technical Field
The utility model relates to a heating power pipeline field, more specifically say, it relates to a prefabricated built on stilts steam insulating tube of compound incubation.
Background
An industrial steam transmission and distribution pipe network (hereinafter referred to as a heat supply network) plays an important role in energy conservation and emission reduction as a component of cogeneration. The heat supply network for transporting and distributing steam has two laying modes of overhead and direct burial. About nine of them adopt aerial laying. Overhead heat supply networks are subject to the natural external influences of wind, rain and sunlight. Human activities such as vehicle scraping collisions, personnel stepping on, etc. also affect the heat grid. The above-mentioned various external actions often cause the heat-insulating shell of the heat supply network pipeline to deform, crack and fall off. Furthermore, wind and rain enter the heat-insulating layer of the pipeline, so that the heat-insulating material is deformed and deteriorated to cause loss. For an industrial steam conveying heat supply network, the conveying heat efficiency is not lower than 92 percent (specified by national standard), and the on-line heat supply network can hardly reach the standard. Some heat supply networks with low construction quality and management and maintenance loss can even have low efficiency of about 70 percent.
After the factory prefabricated tile (microporous calcium silicate tile) -foam (hard polyurethane foam) composite heat-insulating overhead laid steam heat-insulating pipe is disclosed, the conditions of serious additional heat loss and low heat efficiency of on-site heat-insulating built overhead steam pipe network are thoroughly changed. The market is fierce and praised.
However, rigid polyurethane foam and micro-cellular calcium silicate tiles are relatively expensive among conventional insulation materials. Compared with the traditional heat supply network engineering, the heat supply network construction cost is greatly increased by a factory prefabrication heat insulation mode. The popularization speed of the prefabricated overhead heat-insulation steam pipe is influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
There is the problem that the cost is high to prior art, the utility model aims at providing a prefabricated built on stilts steam insulating tube of compound incubation, it has the advantage that thermal insulation performance is good, the cost is low, convenient to popularize and use.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a composite heat-insulation prefabricated overhead steam heat-insulation pipe comprises a steam pipe, wherein a shell is sleeved on the steam pipe, and a glass wool layer, a supporting layer and a foam layer are arranged between the steam pipe and the shell;
the cotton layer parcel of glass set up in steam pipe week side, the supporting layer set up in the foam layer with between the cotton layer of glass, the foam layer fill set up in the supporting layer with between the shell.
By adopting the technical scheme, the ratio of the glass wool in the heat-insulating pipe is increased, so that the ratio of the foam layer is reduced, the production cost of the heat-insulating pipe is reduced, and the heat-insulating pipe is convenient to popularize, popularize and use; because the glass wool layer has stronger high temperature resistance than the foam layer, the glass wool layer is arranged on the periphery of the steam pipe, so that the use safety of the heat-insulating pipe can be effectively improved; the utility model discloses a set up the supporting layer between foam blanket and the cotton layer of glass, one of which strengthens structural strength, and supplementary foam blanket bears disturbances such as external pressure and collision, avoids the insulating tube shell to receive the extrusion, and then the extrusion keeps warm cottonly, causes the cotton layer thermal insulation performance of heat preservation to reduce or even become invalid, its two, and the supporting layer still is used for bearing the pressure when foaming, ensures that the part of steam pipe week side adopts glass cotton, makes things convenient for processing production.
Furthermore, a support is arranged between the support layer and the steam pipe and at the end part of the glass wool layer.
Through the technical scheme, the support bracket is used for bearing the weight of the steam pipe, so that the steam pipe is prevented from being extruded, the heat insulation pipe shell is prevented from being extruded, and then the heat insulation cotton is extruded, so that the heat insulation performance of the heat insulation cotton layer is reduced and even the heat insulation cotton layer is ineffective.
Furthermore, the supporting layer and the support are formed by splicing and fixing a plurality of tile arches.
By the technical scheme, the tile arch is in a customized size, so that a product with a size meeting the requirement can be conveniently processed; in addition, the tile arch has excellent heat insulating performance and strong compression and load bearing performance.
Furthermore, the tile arches between adjacent layers are arranged in a staggered mode.
Through the technical scheme, the tile arches between the adjacent layers are arranged in a staggered mode, so that force transmission between the layers is facilitated, and the supporting strength of the end support is improved.
Furthermore, the shell is a hard aluminum alloy sheet, and the thickness of the shell is 0.5 mm-1.5 mm.
Through above-mentioned technical scheme, ensure that the shell has sufficient intensity.
Further, the foam layer is a rigid polyurethane foam block.
Through the technical scheme, the rigid polyurethane foam has the best heat insulation performance in the conventional heat insulation material, and the compressive strength of the rigid polyurethane foam can reach more than 0.3 MPa. The polyurethane foam is not water-absorbing and water-proof, is continuous, tight and seamless, and can fill heat-insulating spaces in any shapes.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the proportion of the glass wool in the heat-insulating pipe is increased, so that the proportion of the foam layer is reduced, the production cost of the heat-insulating pipe is reduced, and the heat-insulating pipe is convenient to popularize, popularize and use;
(2) because the glass wool layer has stronger high temperature resistance than the foam layer, the glass wool layer is arranged on the periphery of the steam pipe, so that the use safety of the heat-insulating pipe can be effectively improved;
(3) through the utility model, the supporting layer is arranged between the foam layer and the glass wool layer, one of the supporting layer strengthens the structural strength, the foam layer is assisted to bear the disturbance such as external pressure, collision and the like, the heat preservation pipe shell is prevented from being extruded, then the heat preservation wool is extruded, the heat preservation performance of the heat preservation wool layer is reduced or even the heat preservation performance is disabled, and the supporting layer is also used for bearing the pressure during foaming, so that the glass wool is adopted in the part of the periphery of the steam pipe, and the processing and the production are convenient;
(4) furthermore, a foam layer is formed by foaming between the shell and the supporting layer, the processing mode can completely eliminate gaps between inner layers of the heat preservation pipe, and the heat preservation inner space is complete and has no vacancy, so that additional heat loss caused by cold air permeation is avoided, convection of air in the heat preservation pipe is also avoided, and heat loss caused by convection in the heat preservation layer in the traditional heat preservation structure is eliminated;
(5) furthermore, the complete metal shell is adopted to isolate rainwater, so that additional heat loss caused by rainwater is avoided;
(6) furthermore, by adopting the high-strength microporous calcium silicate tiles as the pipeline support, the additional heat loss caused by the heat bridge formed by adopting the steel plate as the pipeline support of the traditional overhead pipeline is eliminated.
Drawings
FIG. 1 is a schematic structural view of a composite heat-insulating prefabricated overhead steam heat-insulating pipe;
FIG. 2 is an end view of a composite insulated prefabricated overhead steam insulated pipe;
fig. 3 is a flow chart of the process of the present invention.
Reference numerals: 1. a steam pipe; 2. a housing; 3. a glass wool layer; 4. a support layer; 5. a foam layer; 6. and (4) supporting.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following provides a further detailed description of the present invention with reference to the following embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.
The utility model provides a compound heat preservation prefabricated built on stilts steam heat preservation pipe, as shown in fig. 1 and 2, includes steam pipe 1, and steam pipe 1 is the steel pipe, and the cover is equipped with shell 2 on the steam pipe 1, and shell 2 is the stereoplasm aluminum alloy sheet metal, and thickness is by 0.5mm ~1.5mm, also can choose for use stainless steel board, various steel sheet, galvanized iron sheet and composite metal sheet as required. A glass wool layer 3, a supporting layer 4 and a foam layer 5 which are all annular are sequentially arranged between the steam pipe 1 and the shell 2 from inside to outside.
The glass wool layer 3 wraps the periphery of the steam pipe 1, the glass wool layer 3 is made of glass wool felt, the glass wool felt is made of conventional heat insulation materials, and the heat insulation performance of the glass wool felt is second to that of polyurethane foam, namely the heat insulation material with the lowest price. The price of the polyurethane foam is only one third of the price of the same volume polyurethane foam. The heat preservation performance can be three-quarters of that of polyurethane foam with the same volume, the glass wool felt can endure the temperature of more than 100 ℃ to 300 ℃, and the conventional polyurethane foam can not endure in a high-temperature area.
The supporting layer 4 is arranged between the foam layer 5 and the glass wool layer 3, the foam layer 5 is filled between the supporting layer 4 and the shell 2, the material of the foam layer 5 is rigid polyurethane foam, the rigid polyurethane foam has the best heat insulation performance in conventional heat insulation materials, and the compressive strength of the rigid polyurethane foam can reach more than 0.3 MPa. The polyurethane foam is not water-absorbing and water-proof, is continuous, tight and seamless, and can fill heat-insulating spaces in any shapes. The outer insulation layer as a pipe, pipe fitting (tee bend in pipe network, etc.) is irreplaceable. In addition, since the foam layer 5 is formed by injection foaming, the foam layer 5 formed by foaming also has a function of connecting the housing 2 and the support layer 4.
However, the glass wool felt has no fixed shape, cannot bear compression and moisture absorption, is afraid of water immersion, is easy to deform and deteriorate, and has excellent performance which is not influenced by various weak characteristics if being used as a pipeline thermal insulation material alone. The foam layer 5 is arranged around the glass wool layer 3, so that a solid protective shell is provided for the glass wool, and the inherent short plate of the glass wool is complemented, thereby greatly reducing the product cost of the heat distribution pipeline; wherein the supporting layer 4 is used for protecting and supporting, and prevents that the foam from extruding the glass wool layer 3 in the foaming process, which causes the heat preservation performance of the glass wool layer 3 to be reduced and even become invalid.
A support 6 is arranged at the end part of the glass wool layer 3 between the support layer 4 and the steam pipe 1, the support layer 4 and the support 6 are spliced into a ring shape by a plurality of tile arches, and the tile arches are firmly bonded and fixed by a special adhesive. In addition, the tile arches between adjacent layers are arranged in a staggered manner when viewed from the end face, so that force transmission between layers is facilitated, and the supporting strength of the end support 6 is improved.
A processing technology of a composite heat-insulation prefabricated overhead steam heat-insulation pipe is based on the composite heat-insulation prefabricated overhead steam heat-insulation pipe and comprises the following steps as shown in figure 3:
s1, wrapping and fixing a glass wool felt on the peripheral side of the steam pipe 1 to form a glass wool layer 3; the density rho of the glass wool felt is equal to 48kg/m through high-speed cultivation, the glass wool felt with higher density can be adopted, but the glass wool felt with lower density than 48kg/m through high-speed cultivation cannot be adopted. When the steam temperature is higher and the glass wool felt cannot bear the steam, a layer of high-temperature-resistant aluminum silicate wool felt can be laid on one side close to the steam steel pipe, and then the glass wool felt is externally coated.
S2, splicing and fixing a plurality of tile arches to form a supporting layer 4 through a mould;
the method specifically comprises the following steps: s21, sleeving two layers of sliding films on the mold columns, wherein the sliding films are made of high-density polyethylene, and both sides of each sliding film are smooth surfaces; and S22, laying a plurality of tile arches on the outer sliding film, wherein the tile arches are high-strength microporous calcium silicate tiles, the thickness of the tile arches is 30-40 mm, the compressive strength of the tile arches is 0.5-2.0 MPa, the tile arches are firmly bonded by a special adhesive to form a whole, and the normal plane and the axial plane are coated with the adhesive.
S3, sleeving the shell 2 on the supporting layer 4, and performing foaming operation between the shell 2 and the supporting layer 4 to form a foam layer 5;
the method specifically comprises the following steps: s31, sleeving the shell 2 on the supporting layer 4, wherein the shell 2 is a hard aluminum alloy thin plate, the thickness of the shell is 0.5-1.5 mm, and a stainless steel plate, a color steel plate, a galvanized iron sheet and a composite metal thin plate can be selected as required. The shell 2 is a thin-wall metal sleeve formed by spirally rolling a seaming by a special machine, and continuous ribs are pressed on a metal plate in the rolling process, so that the rigidity of the sleeve is improved. Fixing the housing 2 in a position coaxial with the support layer 4 by means of a mold; s32, sealing the two ends by using a sealing end plate, and sealing the space between the support layer 4 and the shell 2; s33, forming a hole at each end of the side wall of the shell 2, one hole is used as a material injection hole, the other hole is used as an air outlet hole, foaming is carried out between the supporting layer 4 and the shell 2 by adopting a pouring method to form a foam layer 5, and a fire retardant can be mixed in the foaming material to improve the fire resistance.
S4, taking the shell 2, the foam layer 5 and the support layer 4 off the die together, and tearing off the sliding film, wherein the two layers of sliding films are arranged, so that the taking-off operation is convenient;
s5, inserting the steam pipe 1 and the glass wool layer 3 wrapped on the peripheral side of the steam pipe into the supporting layer 4;
the method specifically comprises the following steps: s51, winding the silk ribbon to the periphery of the glass wool layer 3, wherein the silk ribbon is in a state of extruding the glass wool felt, so that the radius of the glass wool layer 3 is reduced, and the subsequent operation is facilitated; s52, inserting the steam pipe 1 and the glass wool layer 3 into the support layer 4 together; and S53, drawing out the silk ribbon.
S6, a plurality of tiles are embedded between the support layer 4 and the steam pipe 1 at the end of the foam layer 5 to form a rest 6 to bear the weight of the steam pipe 1. The tile arch is a high-strength microporous calcium silicate tile, and a graphite lubricant is soaked on the arc surface on the inner side of the tile arch, so that the axial displacement of the steam pipe 1 after heating is facilitated.
In summary, the following steps:
in the utility model, the ratio of the glass wool in the heat preservation pipe is increased, thereby reducing the ratio of the foam layer 5 and further reducing the production cost of the heat preservation pipe; the glass wool layer 3 has stronger high temperature resistance than the foam layer 5, and the glass wool layer 3 is arranged at the periphery close to the steam pipe 1, so that the use safety of the heat-insulating pipe can be effectively improved; the utility model discloses a set up supporting layer 4 between foam layer 5 and the cotton layer 3 of glass, its one of which, reinforcing structural strength, supplementary foam layer 5 bear disturbances such as external pressure and collision, avoid insulating tube shell 2 to receive the extrusion, extrude the heat preservation cotton then, cause the cotton layer thermal insulation performance of heat preservation to reduce or even become invalid, its two, supporting layer 4 still is used for bearing the pressure when foaming, ensures that the part of 1 week side of steam pipe adopts glass cotton, convenient processing production.
Further, the utility model discloses in, through the operation of foaming between shell 2 and supporting layer 4, form foam blanket 5, gap between the inside layer of insulating tube and the layer can be eliminated completely to this kind of processing mode, and the heat preservation inner space is complete does not have the vacancy, has stopped the additional heat loss that cold wind infiltration caused promptly, has also stopped the convection current of the interior air of insulating tube, eliminates the intraformational heat convection loss that keeps warm in traditional insulation construction.
Further, the utility model discloses an isolated rainwater of complete metal casing 2 makes the additional thermal loss that the rainwater causes stop.
Furthermore, the utility model uses high-strength microporous calcium silicate tiles as the pipeline support 6, thereby eliminating the additional heat loss caused by the heat bridge formed by using steel plates as the pipeline support of the traditional overhead pipeline; in addition, the graphite lubricant is soaked on the arc surface on the inner side of the tile arch, so that the steam pipe 1 can be subjected to axial displacement after being heated, and the sliding type pipeline expansion and contraction device is particularly suitable for pipeline expansion and contraction in a sliding mode.
Compared with the same prefabricated tile-foam composite overhead steam heat-insulating pipe in a factory, the heat-insulating material can save half of the cost at most when the same heat-insulating effect is realized. Wherein, the pipe diameter is bigger, and the heat preservation is thicker, and the effect is more obvious.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A composite heat-insulation prefabricated overhead steam heat-insulation pipe comprises a steam pipe (1), wherein a shell (2) is sleeved on the steam pipe (1), and is characterized in that a glass wool layer (3), a supporting layer (4) and a foam layer (5) are arranged between the steam pipe (1) and the shell (2);
the glass wool layer (3) is wrapped on the periphery of the steam pipe (1), the supporting layer (4) is arranged between the foam layer (5) and the glass wool layer (3), and the foam layer (5) is filled between the supporting layer (4) and the shell (2).
2. The composite heat-insulating prefabricated overhead steam heat-insulating pipe as claimed in claim 1, characterized in that a support (6) is arranged between the support layer (4) and the steam pipe (1) at the end of the glass wool layer (3).
3. The composite heat-insulating prefabricated overhead steam heat-insulating pipe as claimed in claim 2, wherein the supporting layer (4) and the support (6) are formed by splicing and fixing a plurality of tile arches.
4. The composite insulating prefabricated overhead steam insulating pipe as claimed in claim 3, wherein the tile arches between adjacent layers are staggered.
5. The composite heat-insulating prefabricated overhead steam heat-insulating pipe as claimed in claim 1, wherein the shell (2) is a hard aluminum alloy sheet with a thickness of 0.5 mm-1.5 mm.
6. The composite insulating prefabricated overhead steam insulating pipe as claimed in claim 1, wherein the foam layer (5) is a rigid polyurethane foam block.
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| CN201921650941.4U CN210890616U (en) | 2019-09-28 | 2019-09-28 | Compound heat-preservation prefabricated overhead steam heat-preservation pipe |
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| CN201921650941.4U CN210890616U (en) | 2019-09-28 | 2019-09-28 | Compound heat-preservation prefabricated overhead steam heat-preservation pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594532A (en) * | 2019-09-28 | 2019-12-20 | 上海科华热力管道有限公司 | Composite heat-insulation prefabricated overhead steam heat-insulation pipe and processing technology thereof |
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- 2019-09-28 CN CN201921650941.4U patent/CN210890616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594532A (en) * | 2019-09-28 | 2019-12-20 | 上海科华热力管道有限公司 | Composite heat-insulation prefabricated overhead steam heat-insulation pipe and processing technology thereof |
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