CN213333107U - Heat-insulating pipeline - Google Patents

Abstract

The utility model belongs to the technical field of heating power pipe network is carried, a thermal insulation pipeline is disclosed. This insulating tube includes the pipeline body, aerogel layer and at least one heat preservation that radially outwards laid in proper order from the periphery wall of pipeline body. Wherein, the heat preservation layer comprises a glass cotton felt layer. The utility model discloses a heat preservation pipeline has better thermal insulation performance.

Description

Heat-insulating pipeline

Technical Field

The utility model belongs to the technical field of heating power pipe network carries, concretely relates to heat preservation pipeline.

Background

The heat distribution pipe network is a pipeline system for conveying heat energy media such as steam or hot water, and the heat distribution pipe network is mainly laid by two modes of direct-buried laying and overhead laying. The directly buried thermal pipeline has been widely used at present, but the overhead thermal pipeline also adopts the old on-site manufacturing method, and the structure of the thermal insulation pipeline 100' manufactured on site by adopting the old manufacturing method can be seen in fig. 3: in a construction site, firstly, oil stains and iron rust on the surface of the pipeline 1 ' are removed to expose the metal luster of the pipeline 1 ', then, the antirust paint layer 2 ' is coated, and then, the heat-insulating material layer 3 ' is coated and then, the outer protective layer glass cloth layer or the aluminum skin layer 4 ' is coated. Although the existing manufacturing mode can realize a certain heat preservation function, a series of problems of low construction speed of the overhead pipeline, poor construction quality, shortened service cycle of the pipeline, unsatisfactory heat preservation performance, large maintenance workload and the like still exist.

SUMMERY OF THE UTILITY MODEL

In order to improve the thermal insulation performance of the thermal insulation pipeline, the utility model provides a thermal insulation pipeline.

According to the utility model discloses a heat preservation pipeline, including the pipeline body, aerogel layer and at least one heat preservation laid in proper order radially outwards from the periphery wall of pipeline body, wherein, the heat preservation includes the cotton felt layer of glass.

Further, the heat insulating layer further comprises a heat reflecting layer formed on the inner surface of the glass wool felt layer.

Further, the heat reflecting layer is an aluminum foil layer.

Further, the heat-insulating pipeline comprises two heat-insulating layers.

Further, the heat-insulating pipeline also comprises a waterproof heat-insulating layer formed on the peripheral wall of the heat-insulating layer positioned on the outermost layer.

Further, the heat preservation pipeline also comprises a protective layer formed on the outer peripheral wall of the waterproof and heat insulation layer.

Further, the protective layer is a galvanized sheet layer.

Further, the heat-insulating pipe further comprises a support member supported between the outer peripheral wall of the pipe body and the inner peripheral wall of the protective layer.

Further, the support member includes a plurality of support rods provided at intervals in a circumferential direction of the outer circumferential wall of the pipe body.

Further, the support rod is made of a material having heat insulation properties.

Compared with the prior art, the utility model discloses a heat preservation pipeline not only has good heat preservation and thermal-insulated efficiency, has characteristics such as environmental protection, fire-retardant simultaneously, can lay the scene at various overhead pipelines and use, simultaneously the utility model discloses a heat preservation pipeline is the biggest characteristics be the pipeline prefabricate the back in the factory, directly transport to the building site weld the equipment can, it is more convenient to be under construction, and construction quality is superior to the pipeline of traditional site operation more.

Drawings

Fig. 1 is a schematic structural view of an insulated pipeline according to an embodiment of the present invention;

FIG. 2 is a front view of a cross-section of the insulated conduit shown in FIG. 1;

fig. 3 is a schematic structural diagram of a heat preservation pipeline in the prior art.

Detailed Description

For better understanding of the purpose, structure and function of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show a structure of an insulated pipe 100 according to an embodiment of the present invention. This insulating pipeline 100 includes pipeline body 1, radially outwards lays the aerogel layer 2 and at least one heat preservation 3 in proper order from the periphery wall of pipeline body 1, and wherein, heat preservation 3 includes glass cotton felt layer 31.

Compare with current insulating tube 100', the insulating tube 100 of the embodiment of the utility model structurally adopts two kinds of novel environmental protection insulation materials: aerogel layer 2 and glass-wool felt layer 31, both of which are lightweight, durable, and heat insulating materials with superior thermal insulation properties. The two heat-insulating materials are used in a compounding mode, so that the effects of insulating heat and reducing the heat dissipation loss of the pipeline body 1 can be achieved, and the pipeline is more economical compared with the mode that a single heat-insulating material layer 3' is used in the prior art. In the prior art, because the temperature in the heat insulation material layer 3 ' outside the pipeline 1 ' is not uniformly reduced along the thickness direction, the temperature is rapidly changed along with the position in the area close to the inner surface of the heat insulation material layer 3 '; the temperature changes slowly with the position in the area close to the outer surface of the heat preservation layer 3, therefore, for the existing single heat preservation material layer 3 ', when the single heat preservation material layer is in a certain thickness, the area close to the outer surface of the heat preservation material layer 3 ' does not have the better heat preservation function, which leads to the increase of the cost of the heat preservation material layer 3 ', but for the composite heat preservation structure of the application, because the aerogel layer 2 is firstly adopted, the heat preservation layer 3, especially the glass cotton felt layer 31, does not need to have the overhigh heat resistance and heat insulation performance, which means more economical, so the purpose of reducing the total cost of the heat preservation layer 3 can be realized as long as the thickness of the heat preservation layer 3 is properly and reasonably selected. Simultaneously, these two kinds of materials of this application compare with current insulation material, still have characteristics such as environmental protection and fire-retardant. Especially to the pipeline insulation material that lays in the piping lane of stipulating in the utility model discloses a thermal insulation pipeline 100 is then more suitable for heating power pipeline to lay the use in utility tunnel (including shield structure and push pipe) for difficult fire material in the utility tunnel design standard of china at present.

In addition, because the construction site in the comprehensive pipe gallery is narrow and small, the construction conditions are mostly severe, the existing heat-insulating pipeline 100' and heat-insulating materials thereof are used, the design specifications are not met, and meanwhile, the construction is difficult due to the need of on-site prefabrication, so that the construction quality is difficult to ensure; and the utility model discloses a heat preservation pipeline 100 has left out processes such as on-the-spot heat preservation preparation, can directly transport to the job site after prefabricating in the mill, and is consequently more convenient, and construction quality can guarantee.

In a preferred embodiment as shown in fig. 1, the insulation layer 3 may further include a heat reflecting layer 32 formed on the inner surface of the glass wool felt layer 31. The aluminum foil reflection layer 32 can reflect most of the heat energy dissipated from the tube body 1 through the aerogel layer 2 back to the tube body 1, so that the loss caused by heat dissipation of the tube body 1 can be reduced. Preferably, the heat reflective layer 32 may be any metal foil layer having a good thermal insulation effect. It is further preferred that the heat reflective layer 32 be an aluminum foil layer, which is more economical and practical to use.

According to the present invention, the heat-insulating pipe 100 may include a plurality of heat-insulating layers 3, and the specific number thereof may be specifically selected according to the actual heat energy transfer requirement, and is not specifically limited herein. In the preferred embodiment shown in fig. 1, insulated pipe 100 includes two layers of insulation 3. The arrangement of the two heat-insulating layers 3 has an optimal heat-insulating effect, and the production cost of the heat-insulating pipeline 100 can be reduced to the greatest extent.

According to the present invention, as shown in fig. 1, the heat insulating pipe 100 may further include a waterproof and heat insulating layer 4 formed on the outer peripheral wall of the outermost heat insulating layer 3. The use of waterproof insulating layer 4 makes the utility model discloses an insulating pipeline 100 more is applicable to built on stilts laying to prevent that insulating pipeline 100 from being corroded by rainwater or groundwater.

As shown in fig. 1, the thermal insulation pipe 100 may further include a protective layer 5 formed on the outer peripheral wall of the waterproof and insulating layer 4. The protective layer 5 may be used to further improve the structural strength of the thermal insulation pipeline 100 itself, and may also be used to prevent the external environment from corroding the thermal insulation pipeline 100, so as to better protect the internal structure of the thermal insulation pipeline 100. Preferably, the protective layer may be a metal layer having better corrosion resistance and better rigidity, preferably a galvanized sheet layer.

According to the present invention, as shown in fig. 2, the thermal insulation pipe 100 may further include a support member 6 supported between the outer circumferential wall of the pipe body 1 and the inner circumferential wall of the protective layer 5. The support member 6 ensures that the thermal insulation pipe 100 is not damaged during transportation after being prefabricated in a factory.

Preferably, the support member 6 may include a plurality of support rods 61 disposed at intervals in a circumferential direction of the outer circumferential wall of the pipe body 1. The arrangement can enable the supporting piece 6 to support the internal structure of the heat preservation pipeline 100 in multiple directions, and can effectively reduce the possibility that the heat preservation pipeline 100 is locally deformed due to pressure in different directions during transportation.

Further preferably, the support rod 61 may be made of a material having thermal insulation properties to prevent heat in the pipe body 1 from being transferred to the outside of the heat-insulating pipe 100 along the support rod 61, thereby affecting the heat-insulating effect of the heat-insulating pipe 100.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. The utility model provides a heat preservation pipeline, its characterized in that, includes the pipeline body, certainly aerogel layer and at least one heat preservation that radially outwards laid in proper order of periphery wall of pipeline body, wherein, the heat preservation includes glass cotton felt layer.

2. The insulated pipe of claim 1, wherein the insulation further comprises a heat reflecting layer formed on an inner surface of the glass wool mat layer.

3. The insulated pipe of claim 2, wherein the heat reflective layer is an aluminum foil layer.

4. An insulated pipe according to any of claims 1-3, characterized in that the insulated pipe comprises two of the insulating layers.

5. The insulated pipe according to any one of claims 1 to 3, further comprising a waterproof and insulating layer formed on the outer peripheral wall of the insulating layer located at the outermost layer.

6. The insulated pipe of claim 5, further comprising a protective layer formed on the outer peripheral wall of the waterproof and insulating layer.

7. The insulated pipe of claim 6, wherein the protective layer is a galvanized sheet layer.

8. The insulated pipe of claim 6 or 7, further comprising a support member supported between an outer peripheral wall of the pipe body and an inner peripheral wall of the protective layer.

9. The thermal insulation pipe according to claim 8, wherein the support member includes a plurality of support rods provided at intervals in a circumferential direction of the outer circumferential wall of the pipe body.

10. The insulated pipe of claim 9, wherein the support rods are made of a material having thermal insulation properties.

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