A heat delivery pipe

Abstract

The present application relates to heat supply equipment technical field, disclose a kind of heat delivery pipeline, comprising: pipeline, pipeline is used to transport medium is transported;Fixed insulation layer, fixed insulation layer is coated on the outer circumferential surface of pipeline, fixed insulation layer is wound with first fiber cloth, and first fiber cloth is used to tightly and compress fixed insulation layer;Anti eccentricity insulation layer, anti eccentricity insulation layer includes upper insulation ring and lower insulation ring, and upper insulation ring and lower insulation ring are all coated on the outer circumferential surface of fixed insulation layer, and upper insulation ring and lower insulation ring are attached setting;Conventional insulation layer, conventional insulation layer is attached and coated on the outer circumferential surface of anti eccentricity insulation layer.The heat delivery pipeline can solve the problem of eccentricity sinking of thermal insulation material, reduce the radiation heat loss caused by air sandwich or gap, reduce the influence of external environmental factors on the heat preservation effect of pipeline, can reduce the heat loss of heat delivery process, improve energy-saving effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat supply equipment, in particular to a heat supply pipeline. BACKGROUND

[0002] Various forms of heat supply pipelines are laid in heat production, central heating and petrochemical industries, and heat source points and heat consumption points in the above industries are connected in the form of heat supply pipelines to realize heat supply. Since the heat supply pipeline has a high temperature of the conveying medium (such as steam, hot water, heat conducting oil, etc.), heat is transferred to the surrounding environment in the form of heat conduction, heat convection and heat radiation during the conveying process, that is, there is heat loss, and the proportions of the heat transfer of the three heat transfer modes are quite different due to different heat preservation application scenarios or heat preservation laying modes. Excessive heat loss of the heat supply pipeline not only wastes energy, but also may cause the temperature of the conveying medium to be too low to meet the heat quality requirements, and even may endanger the safe operation of the heat supply pipeline.

[0003] The heat supply pipeline is heat preserved to reduce heat loss, but the existing heat preservation design and construction process cannot achieve ideal heat preservation effect. For example, the heat preservation material may be eccentrically settled (the heat preservation structure is thin at the top and thick at the bottom) due to gravity, pipeline vibration and other factors, and an air gap may be formed between the heat preservation material and the pipe wall. When the eccentric settlement occurs, the heat preservation mode is changed from heat conduction of the heat preservation material as the main mode and heat radiation as the auxiliary mode to air gap radiation as the main mode and air gap heat conduction as the auxiliary mode. The existing heat preservation design and construction process cannot solve the problem, and the heat loss of the heat supply pipeline is large. The circular heat preservation structure does not consider the influence of environmental factors such as head-on wind direction and top snow on the heat dissipation of the pipeline. In addition, since there is a gap between the metal outer sheath of the heat supply pipeline and the outer heat preservation material of the pipeline, the radiation heat transfer is greater than the air heat conduction and heat convection at this time, and the heat loss caused by heat radiation is often ignored in the heat preservation design, so the heat loss is large. SUMMARY

[0004] The present application aims to provide a heat supply pipeline which can solve the problem of eccentric settlement of the heat preservation material, reduce the radiation heat transfer loss caused by the air gap or gap, reduce the influence of external environmental factors on the heat preservation effect of the pipeline, reduce the heat loss in the heat supply process, and improve the energy saving effect.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] A heat delivery pipeline comprises a pipeline for delivering a delivery medium, a fixed thermal insulation layer wrapped on the outer circumferential surface of the pipeline, a first fiber cloth wrapped on the fixed thermal insulation layer for tightly wrapping and compressing the fixed thermal insulation layer, an eccentricity prevention thermal insulation layer comprising an upper thermal insulation ring and a lower thermal insulation ring, both of which are wrapped on the outer circumferential surface of the fixed thermal insulation layer and are arranged in abutment, and a conventional thermal insulation layer wrapped on the outer circumferential surface of the eccentricity prevention thermal insulation layer.

[0007] As a preferred scheme of the heat delivery pipeline, the heat delivery pipeline further comprises a reinforced thermal insulation layer wrapped on the outer circumferential surface of the conventional thermal insulation layer.

[0008] As a preferred scheme of the heat delivery pipeline, the cross-sectional shape of the reinforced thermal insulation layer is arc-shaped, and the reinforced thermal insulation layer is wrapped on the windward side of the conventional thermal insulation layer.

[0009] As a preferred scheme of the heat delivery pipeline, an outer layer fiber cloth is wrapped on the outer circumferential surface of the reinforced thermal insulation layer.

[0010] As a preferred scheme of the heat delivery pipeline, a metal protective layer is arranged on the outer circumferential surface of the outer layer fiber cloth.

[0011] As a preferred scheme of the heat delivery pipeline, a paint layer is arranged on the outer side surface of the metal protective layer, and a first aluminum film is arranged on the inner side surface of the metal protective layer, with the shiny surface of the first aluminum film facing the pipeline.

[0012] As a preferred scheme of the heat delivery pipeline, a second fiber cloth is wrapped on the outer side surface of the eccentricity prevention thermal insulation layer.

[0013] As a preferred scheme of the heat delivery pipeline, a second aluminum film is arranged between the lower thermal insulation ring and the fixed thermal insulation layer, with the shiny surface of the second aluminum film facing the fixed thermal insulation layer.

[0014] As a preferred scheme of the heat delivery pipeline, the conventional thermal insulation layer comprises a first thermal insulation layer wrapped on the outer circumferential surface of the eccentricity prevention thermal insulation layer and a second thermal insulation layer wrapped on the outer circumferential surface of the first thermal insulation layer. Similarly, the conventional thermal insulation layer can be provided with three layers, four layers or five layers according to the pipeline thermal insulation calculation requirements.

[0015] As a preferred scheme of the heat delivery pipeline, the outer circumferential surface of the first thermal insulation layer and the second thermal insulation layer is wrapped with a third fiber cloth.

[0016] The heat delivery pipeline has the following beneficial effects:

[0017] The present application provides a heat delivery pipeline, which comprises a pipeline, a fixed insulation layer, an eccentricity prevention insulation layer and a conventional insulation layer, the fixed insulation layer is wrapped on the outer circumferential surface of the pipeline, and a first fiber cloth is wound on the fixed insulation layer, the first fiber cloth is used to wrap and compress the fixed insulation layer, so that the fixed insulation layer is tightly wrapped on the pipeline, and gaps between the pipeline and the fixed insulation layer are avoided. The eccentricity prevention insulation layer comprises an upper insulation ring and a lower insulation ring, the upper insulation ring and the lower insulation ring are respectively wrapped on the outer circumferential surface of the fixed insulation layer and are arranged in close contact, and the conventional insulation layer is wrapped on the outer circumferential surface of the eccentricity prevention insulation layer in close contact. Since the eccentricity prevention insulation layer is divided into two parts and is wrapped on the fixed insulation layer in close contact, eccentric settlement between the eccentricity prevention insulation layer and the fixed insulation layer is avoided, so that gaps or air layers between the eccentricity prevention insulation layer and the fixed insulation layer are avoided, and the heat loss caused by the air layers or the gaps is reduced. The reinforced insulation layer, the first aluminum film inside the outer fiber cloth and the metal protective layer can reduce the influence of external environmental factors on the pipeline insulation effect, can reduce the heat loss in the heat delivery process, and can improve the energy saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the heat delivery pipeline according to the embodiment of the present application;

[0019] Figure 2 is a sectional view of the heat delivery pipeline according to the embodiment of the present application;

[0020] Figure 3 is a structural schematic view of the eccentricity prevention insulation layer of the heat delivery pipeline according to the embodiment of the present application;

[0021] Figure 4 is Figure 3 is a sectional view at H-H in FIG.

[0022] in the figure:

[0023] 1, pipeline; 2, fixed insulation layer; 21, first fiber cloth; 3, eccentricity prevention insulation layer; 31, upper insulation ring; 32, lower insulation ring; 321, second aluminum film; 33, second fiber cloth; 4, conventional insulation layer; 41, fourth fiber cloth; 5, reinforced insulation layer; 51, outer fiber cloth; 52, metal protective layer; 6, iron wire. DETAILED DESCRIPTION

[0024] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall into the protection scope of the present application.

[0025] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless explicitly defined and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The technical solutions of the heat delivery pipeline provided by the present application will be further described below with reference to the drawings and through specific embodiments.

[0028] The present embodiment provides a heat delivery pipeline, which comprises a pipeline body and a pipeline cover. Figure 1 and Figure 2As shown, the heat delivery pipeline comprises a pipeline 1 for delivering a delivery medium, a fixed insulation layer 2 wrapped on the outer circumferential surface of the pipeline 1, a first fiber cloth 21 wound on the fixed insulation layer 2, the first fiber cloth 21 being used to tightly wrap and compress the fixed insulation layer 2 so that the fixed insulation layer 2 is tightly wrapped on the pipeline 1, thereby avoiding a gap between the pipeline 1 and the fixed insulation layer 2, an eccentricity-preventing insulation layer 3 comprising an upper insulation annular ring 31 and a lower insulation annular ring 32, both of which are wrapped on the outer circumferential surface of the fixed insulation layer 2 and are arranged in abutment, and a conventional insulation layer 4 wrapped in abutment on the outer circumferential surface of the eccentricity-preventing insulation layer 3 and covering the joint between the upper insulation annular ring 31 and the lower insulation annular ring 32, thereby reducing heat loss occurring at this position.

[0029] As shown in the drawings, Figure 2 In this embodiment, since the eccentricity-preventing insulation layer 3 is divided into two parts and is wrapped on the upper and lower parts of the fixed insulation layer 2 in abutment, eccentric settlement between the eccentricity-preventing insulation layer 3 and the fixed insulation layer 2 is avoided, thereby avoiding a gap or air layer between the eccentricity-preventing insulation layer 3 and the fixed insulation layer 2, avoiding radiation heat loss caused by the air layer or the gap, reducing heat loss in the heat delivery process, and improving energy-saving effect.

[0030] Preferably, the fixed insulation layer 2 is made of high-temperature centrifugal glass wool, the thickness is 20 mm, and the bulk density is 48 kg / m 3 In this embodiment, after the fixed insulation layer 2 is bound to the pipeline 1 by the binding iron wire 6, the first fiber cloth 21 is wound on the outside of the fixed insulation layer 2, the first fiber cloth 21 is a high-strength fiber cloth, and the thickness of the fixed insulation layer 2 can be compressed by 20%.

[0031] Alternatively, the fixed insulation layer 2 can also be made of aluminum silicate needle-punched felt, the thickness is 10 mm, and the bulk density is 128 kg / m 3 Similarly, after the fixed insulation layer 2 is bound to the pipeline 1 by the binding iron wire 6, the first fiber cloth 21 is wound on the outside of the fixed insulation layer 2, and the thickness of the fixed insulation layer 2 can be compressed by 10%. Specifically, the outer layer of the first fiber cloth 21 is compounded with a third aluminum film, the bright surface of the third aluminum film is arranged on the side away from the pipeline 1, and is used to reduce the heat emitted by the pipeline 1 to the environment in the form of radiation.

[0032] In this embodiment, the thickness of the eccentricity-preventing insulation layer 3 is 30 mm. As shown in the drawings, Figure 3As shown, during installation, the lower insulation ring 32 must be laid first, and the wire 6 must be tied before laying the upper insulation ring 31. After the upper insulation ring 31 covers and fixes the insulation layer 2, the upper insulation ring 31 and the lower insulation ring 32 are tied together with the wire 6 to ensure a tight fit between them. Preferably, the outer surface of the anti-eccentric insulation layer 3 is covered with a second fiber cloth 33, which is used to tighten the anti-eccentric insulation layer 3 onto the fixed insulation layer 2. Furthermore, a fourth aluminum film is laminated on one side of the second fiber cloth 33. During installation, the bright side of the fourth aluminum film faces the pipe 1 to reduce heat loss through radiation.

[0033] like Figure 4 As shown, specifically, the included angle A formed by the lower insulation ring 32 is in the range of 120°-175°, which can effectively prevent gaps from appearing between the lower insulation ring 32 and the fixed insulation layer 2.

[0034] Preferably, a second aluminum film 321 is provided between the lower insulating ring 32 and the fixed insulating layer 2, with the bright side of the second aluminum film 321 facing the fixed insulating layer 2, to reduce heat loss in the form of radiation. Specifically, the lower insulating ring 32 is laminated with the second aluminum film 321 on the side close to the fixed insulating layer 2, making the installation of the second aluminum film 321 convenient.

[0035] In this embodiment, the conventional insulation layer 4 includes a first insulation layer and a second insulation layer. The first insulation layer covers the outer peripheral surface of the anti-eccentric insulation layer 3, and the second insulation layer covers the outer peripheral surface of the first insulation layer. Specifically, both the first and second insulation layers are 40mm thick. A fourth fiber cloth 41 is wound around the outer peripheral surface of both the first and second insulation layers. A fifth aluminum film is laminated on one side of the fourth fiber cloth 41. During installation, the bright side of the fifth aluminum film faces the pipe 1 to reduce heat loss in the form of radiation. Furthermore, iron wires 6 are tied to the conventional insulation layer 4 and the fourth fiber cloth 41 respectively to tighten them.

[0036] Preferably, the heat transfer pipeline further includes a reinforcing insulation layer 5, which covers the outer periphery of the conventional insulation layer 4, and is used to further insulate the heat transfer pipeline. Preferably, the thickness of the reinforcing insulation layer 5 is 20 mm.

[0037] In the embodiment, the cross-sectional shape of the reinforcing thermal insulation layer 5 is circular arc, and the reinforcing thermal insulation layer 5 is wrapped on the windward side of the conventional thermal insulation layer 4. Specifically, the reinforcing thermal insulation layer 5 is a part of a circular ring, and a coordinate axis is established on the central axis of the cross section of the pipeline 1, one edge of the reinforcing thermal insulation layer 5 is located in the first quadrant of the coordinate axis, and the other edge is located in the third quadrant, and the two edges form an angle B and an angle C with the horizontal line of the pipeline 1 respectively, wherein the angle B ranges from 15° to 30°, and the angle C ranges from 30° to 60°. Preferably, the angle B is 30°, and the angle C is 30°.

[0038] Preferably, the outer periphery of the reinforcing thermal insulation layer 5 is wound with an outer fiber cloth 51. The two sides of the outer fiber cloth 51 are both compounded with a sixth aluminum film, and the inner side of the sixth aluminum film is provided with a bright surface facing the pipeline 1, and the outer side of the sixth aluminum film is provided with a bright surface facing away from the pipeline 1, for reducing the loss of heat in the form of radiation.

[0039] In the embodiment, the outer periphery of the outer fiber cloth 51 is provided with a metal protective layer 52 for protecting the heat transfer pipeline. Preferably, the metal protective layer 52 is made of color steel plate, which is conducive to reducing the manufacturing cost. Further, the outer side of the metal protective layer 52 is provided with a paint layer, and the inner side of the metal protective layer 52 is provided with a first aluminum film, and the bright surface of the first aluminum film faces the pipeline 1, which cooperates with the reinforcing thermal insulation layer 5 and the outer fiber cloth 51 to reduce the influence of external environmental factors on the pipeline insulation and to strengthen the insulation effect.

[0040] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A heat transport pipeline, characterized in that The utility model relates to a pipeline heat preservation structure, which comprises: a pipeline (1) for conveying a conveying medium; a fixed heat preservation layer (2) wrapped on the outer circumferential surface of the pipeline (1), the fixed heat preservation layer (2) being wrapped with a first fiber cloth (21) for tightly wrapping and compressing the fixed heat preservation layer (2); an eccentricity-preventing heat preservation layer (3) comprising an upper heat preservation ring (31) and a lower heat preservation ring (32), the lower heat preservation ring (32) forming an included angle in the range of 120°-175°, the upper heat preservation ring (31) and the lower heat preservation ring (32) being both wrapped on the outer circumferential surface of the fixed heat preservation layer (2) and being arranged in abutment; a conventional heat preservation layer (4) wrapped in abutment on the outer circumferential surface of the eccentricity-preventing heat preservation layer (3), the conventional heat preservation layer (4) comprising a first heat preservation layer wrapped on the outer circumferential surface of the eccentricity-preventing heat preservation layer (3) and a second heat preservation layer wrapped on the outer circumferential surface of the first heat preservation layer; wherein the lower heat preservation ring (32) is first laid and bound with iron wire, and then the upper heat preservation ring (31) is laid, and after the upper heat preservation ring (31) wraps the fixed heat preservation layer (2), the lower heat preservation ring (32) and the upper heat preservation ring (31) are integrally bound with iron wire.

2. The thermal delivery conduit of claim 1, wherein, The utility model further comprises a reinforcing heat preservation layer (5) wrapped on the outer circumferential surface of the conventional heat preservation layer (4).

3. A heat delivery conduit according to claim 2, wherein, The reinforcing heat preservation layer (5) has a circular arc shape in cross section, and is wrapped on the windward side of the conventional heat preservation layer (4).

4. The thermal delivery conduit of claim 2, wherein, An outer layer fiber cloth (51) is wrapped on the outer circumferential surface of the reinforcing heat preservation layer (5).

5. A heat delivery conduit according to claim 4, wherein A metal protective layer (52) is arranged on the outer circumferential surface of the outer layer fiber cloth (51).

6. A heat delivery conduit according to claim 5, wherein A paint layer is arranged on the outer side of the metal protective layer (52), and a first aluminum film is arranged on the inner side of the metal protective layer (52), the shiny surface of the first aluminum film facing the pipeline (1).

7. The thermal delivery conduit of claim 1, wherein, A second fiber cloth (33) is wrapped on the outer side of the eccentricity-preventing heat preservation layer (3).

8. The thermal delivery conduit of claim 1, wherein, A second aluminum film (321) is arranged between the lower heat preservation ring (32) and the fixed heat preservation layer (2), the shiny surface of the second aluminum film (321) facing the fixed heat preservation layer (2).

9. The thermal delivery conduit of claim 1, wherein, A third fiber cloth is wrapped on the outer circumferential surface of the first heat preservation layer and the second heat preservation layer.

Images