CN113339628A

CN113339628A - Heat preservation pipe

Info

Publication number: CN113339628A
Application number: CN202110705625.8A
Authority: CN
Inventors: 王自学
Original assignee: SUZHOU HONGDING WATER CO Ltd
Current assignee: SUZHOU HONGDING WATER CO Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-09-03

Abstract

The invention discloses a heat preservation pipe, which comprises a pipeline positioned in the middle and a plurality of heat preservation layers wrapped on the periphery of the pipeline, wherein the heat preservation layers are arranged along the length direction of the pipeline, and adjacent heat preservation layers are mutually connected; the heat preservation is including being close to the fretwork layer of pipeline and being located the insulating layer of fretwork layer periphery, the fretwork layer include with insulating layer integrated into one piece's insulating block, insulating block evenly distributed is in the periphery of pipeline, and is adjacent form the fretwork groove between the insulating block, at least part the insulating block has and extends to the outer extension of insulating layer tip, the extending direction of extension with the length direction of pipeline is the same, the extension holds in the fretwork inslot of adjacent heat preservation in order to be used for connecting adjacent heat preservation. According to the heat insulation pipe, the extension parts matched with the hollow-out grooves are arranged, and when the heat insulation layer is installed, the extension parts can be inserted into the hollow-out grooves of the adjacent heat insulation layers, so that rapid installation and connection are achieved.

Description

Heat preservation pipe

Technical Field

This patent relates to pipeline technical field, concretely relates to insulating tube.

Background

With the construction of cities and the development of industries, pipeline facilities are seen everywhere. The heat preservation pipe is a short name of a heat insulation pipeline, is used for preventing or slowing down heat exchange between fluid in the pipeline and the outside, and is widely applied to industrial production or various residences.

The existing heat preservation pipe is generally composed of a pipeline positioned inside and a heat preservation layer wrapped outside the pipeline, and the heat preservation layer plays a role in heat preservation, but the heat preservation effect of the heat preservation pipe is general on the whole; and some heat preservation pipes with relatively good heat preservation effects are made of expensive materials or have thick heat preservation layers, and the application range is limited. Meanwhile, the connection and installation between the heat-insulating layers outside the heat-insulating pipes in the prior art are inconvenient, and the strength is not enough.

Disclosure of Invention

In view of the above, in order to solve the problems in the prior art, the invention provides a heat preservation pipe, which can ensure the strength of a heat preservation layer and further improve the heat preservation effect of the heat preservation pipe while reducing the cost and controlling the thickness, and can quickly realize the connection between adjacent heat preservation layers.

In order to achieve the purpose, the invention adopts the following technical scheme:

a heat preservation pipe comprises a pipeline positioned in the middle and a plurality of heat preservation layers wrapped on the periphery of the pipeline, wherein the heat preservation layers are arranged along the length direction of the pipeline, and adjacent heat preservation layers are connected with each other; the heat preservation is including being close to the fretwork layer of pipeline and being located the insulating layer of fretwork layer periphery, the fretwork layer include with insulating layer integrated into one piece's insulating block, insulating block evenly distributed is in the periphery of pipeline, and is adjacent form the fretwork groove between the insulating block, at least part the insulating block has and extends to the outer extension of insulating layer tip, the extending direction of extension with the length direction of pipeline is the same, the extension holds in the fretwork inslot of adjacent heat preservation in order to be used for connecting adjacent heat preservation. The extending direction of the heat insulation blocks and the hollow-out grooves is the same as the length direction of the pipeline. In some embodiments, other heat insulating materials, preferably materials with a thermal conductivity lower than that of the heat insulating blocks and the heat insulating layer materials, may be filled in the hollow-out grooves to further improve the heat insulating effect of the heat insulating pipe.

According to some preferred embodiments of the present invention, the inner wall of the hollow-out groove and/or the outer wall of the extension portion are provided with a wave shape, and the wave shape extends along the length direction of the pipeline;

according to some preferred embodiments of the present invention, the wavy inner wall and/or the extension portion is provided with a reinforcing rib, and the reinforcing rib extends along the length direction of the pipe; and the reinforcing ribs on the inner wall of the hollow-out groove are mutually embedded with the reinforcing ribs on the extension part.

Aiming at the reinforcing rib: firstly, the arrangement of the reinforcing ribs can further improve the structural strength of the heat-insulating layer, and the structural strength of the whole heat-insulating layer can be ensured under the condition of having a hollow-out layer and even under the condition of reducing the thickness of the heat-insulating layer; secondly, the cross-section of a plurality of strengthening ribs can set up to zigzag or arc, can effectively carry out the gomphosis between extension and the fretwork groove after spacing and connecting to inserting between extension and the fretwork layer on the adjacent heat preservation, strengthens being connected between the adjacent heat preservation. Aiming at the wavy inner wall, firstly, the corrugated inner wall can also have a certain damping effect on the basic heat insulation function of the heat insulation layer; secondly, because the wave crest, the trough extend along the length direction of pipeline for can more effectual connection after inserting between extension on the adjacent heat preservation and the fretwork layer, strengthen the joint strength between the adjacent heat preservation.

According to some preferred implementation aspects of the invention, a connecting layer is further arranged between the hollowed-out layer and the pipeline, the connecting layer, the heat insulation block and the heat insulation layer are integrally formed, one side of the connecting layer is attached to the periphery of the pipeline, the other layer of the connecting layer is connected with the heat insulation block, namely, the heat insulation block and the hollowed-out layer are uniformly distributed on the connecting layer at intervals, and the periphery of the hollowed-out groove is filled with heat insulation materials which are the same or different; and the connection between the adjacent insulation layers can be better reinforced by the extension parts.

According to some preferred embodiment aspects of the present invention, the width of the insulation block is gradually decreased from the top of the insulation block to the bottom of the insulation block. Namely, the heat insulation blocks are similar to the shape of an inverted trapezoid, so that the structural strength of the heat insulation layer is ensured, and collapse and deformation are prevented.

According to some preferred implementation aspects of the invention, the cross-sectional area of the heat insulation block is greater than or equal to that of the hollow groove, so as to ensure the strength of the heat insulation layer.

According to some preferred aspect of the present invention, the shape of the heat insulation block is the same as that of the hollow-out groove, and the heat insulation block and the hollow-out groove are uniformly spaced on the outer wall of the pipe. Namely, the heat insulation blocks and the hollow-out grooves are alternately arranged at the periphery of the pipeline at intervals. In some embodiments, in order to facilitate the connection between the adjacent insulating layers, an extension portion is provided on some or all of the insulating blocks in the insulating layers, the extension portion is formed by extending the insulating blocks to the length direction of the pipeline and protruding the end portion of the insulating layer, and the extension portion is used for being inserted into the hollow-out groove in the adjacent insulating layer to connect the two adjacent insulating layers.

According to some preferred implementation aspects of the invention, the top surface and the bottom surface of the hollow groove are both arc-shaped, and the circle center of a circle corresponding to the arc shape of the top surface and the arc shape of the bottom surface of the hollow groove coincides with the circle center corresponding to the pipeline. The concentric circles are arranged to better ensure the strength and the heat preservation effect of the heat preservation layer compared with non-circular or non-concentric circles.

According to some preferred aspects of the invention, a side of the insulation block adjacent to the duct is curved to match an outer wall of the duct. One end of the heat insulation block is attached to the outer wall of the pipeline.

According to some preferred implementation aspects of the invention, the arc shape of the top surface of the heat insulation block and the arc shape of the top surface of the hollow groove are located on the same circle, the arc shape of the bottom surface of the heat insulation block and the arc shape of the bottom surface of the hollow groove are located on another circle, and the two circles are concentric circles and are the same as the center of the pipeline.

According to some preferred embodiment aspects of the present invention, the outer wall of the thermal insulation layer is coated with a PVA layer, and the thickness of the PVA layer is 0.5 to 2 mm. In some embodiments, a PVA (polyvinyl alcohol) layer is further disposed on the outer wall of the thermal insulation pipe, on one hand, the PVA layer can play a role in protection; on the other hand, PVA has the characteristic that makes the water droplet form the water film, can effectively avoid steam to condense into the water droplet on the insulating tube outer wall and fall down.

Compared with the prior art, the invention has the advantages that: according to the heat preservation pipe, the hollow-out grooves are formed in the heat preservation layer, the heat insulation blocks play a supporting and reinforcing role, the hollow-out grooves are formed between the adjacent heat insulation blocks, so that the periphery of the pipeline has local air heat insulation, the cost is reduced, the thickness is controlled, and meanwhile the strength of the heat preservation layer and the heat preservation effect of the heat preservation pipe can be guaranteed; meanwhile, due to the existence of thermal expansion and cold contraction, the pipeline can deform, and the hollow layer can better wrap the pipeline and prolong the service life of the heat-insulating layer; the extension portion that matches with the fretwork groove is set up, when the heat preservation is installed, can realize quick installation and connection through inserting the extension portion in the fretwork groove of adjacent heat preservation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a cross-sectional view of an insulated pipe according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an insulated pipe according to a preferred embodiment of the present invention;

FIG. 3 is a longitudinal sectional view of an insulating tube in a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view of an insulating tube according to another preferred embodiment of the present invention;

FIG. 5 is a cross-sectional view of an insulating tube according to another preferred embodiment of the present invention;

FIG. 6 is a cross-sectional view of an insulating tube according to another preferred embodiment of the present invention;

FIG. 7 is a cross-sectional view of an insulating tube according to another preferred embodiment of the present invention;

FIG. 8 is a longitudinal sectional view of an insulating tube according to another preferred embodiment of the present invention;

wherein: the heat insulation structure comprises a pipeline-1, a heat insulation layer-2, a hollow layer-3, a heat insulation layer-4, a connecting layer-5, a heat insulation block-61, a hollow groove-62, a PVA layer-7, a reinforcing rib-8, an extension part-9 and a heat insulation material-10.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the insulating tube of this embodiment includes pipeline 1 that is located the centre and wraps up in the heat preservation 2 of pipeline 1 periphery, and heat preservation 2 includes the fretwork layer 3 that is close to pipeline 1 and is located the insulating layer 4 of fretwork layer 3 periphery, and fretwork layer 3 includes the thermoblock 61 with insulating layer 4 integrated into one piece, and thermoblock 61 evenly distributed forms fretwork groove 62 in the periphery of pipeline 1 between the adjacent thermoblock 61. The extending direction of the heat insulating block 61 and the hollow groove 62 is the same as the longitudinal direction of the duct 1. The width of the insulation block 61 is gradually reduced from the top of the insulation block 61 to the bottom of the insulation block 61. That is, the insulation blocks 61 are shaped like an inverted trapezoid to secure the structural strength of the insulation layer 2 and prevent collapse and deformation.

The sectional area of the heat insulation block 61 is greater than or equal to that of the hollow groove 62 to ensure the strength of the heat insulation layer 2. In the present embodiment, the shape of the thermal insulation block 61 is the same as that of the hollow-out groove 62, that is, the thermal insulation block 61 and the hollow-out groove 62 are alternately arranged at the periphery of the pipeline 1.

One end of the heat insulation block 61 is attached to the outer wall of the pipeline 1, and one side of the heat insulation block 61, which is close to the pipeline 1, is in an arc shape matched with the outer wall of the pipeline 1. The top surface and the bottom surface of the hollow groove 62 are both arc-shaped, and the circle center of the circle corresponding to the arc-shaped top surface and the arc-shaped bottom surface of the hollow groove 62 coincides with the circle center corresponding to the pipeline 1. The arc of the top surface of the heat insulation block 61 and the arc of the top surface of the hollow groove 62 are located on the same circle, the arc of the bottom surface of the heat insulation block 61 and the arc of the bottom surface of the hollow groove 62 are located on the other circle, and the two circles are concentric circles and are the same as the circle center of the pipeline 1. The concentric circles are arranged to better ensure the strength and the heat preservation effect of the heat preservation layer 2 compared with non-circular or non-concentric circles.

In this embodiment, the outer wall of the thermal insulation layer 4 is further coated with a PVA (polyvinyl alcohol) layer, and the thickness of the PVA layer 7 is 2 mm. On one hand, the PVA layer 7 can play a role in protection; on the other hand, PVA has the characteristic that makes the water droplet form the water film, can effectively avoid steam to condense into the water droplet on the insulating tube outer wall and fall down.

Further, as shown in fig. 2 to 3, the duct 1 is externally provided with a plurality of insulating layers 2 arranged along the length direction of the duct 1; the heat-insulating layers 2 are connected end to wrap the pipeline 1. The heat insulation block 61 in the embodiment has an extension part 9 extending out of the end of the heat insulation layer 4, the extension part 9 extends in the same direction as the length direction of the pipeline 1, and the extension part 9 is accommodated in the hollow-out groove 62 of the adjacent heat insulation layer 2 for connecting the adjacent heat insulation layers 2.

As shown in fig. 3, in order to enhance the structural strength of the insulating layers 2 and the connection strength between adjacent insulating layers 2, the inner walls of the hollow-out grooves 62 and the outer walls of the extending portions 9 are further arranged in a wave shape, and the wave shape extends along the length direction of the pipeline 1; the extension part 9 of the wave-shaped outer wall is embedded with the hollow groove 62 of the wave-shaped inner wall; reinforcing ribs 8 are arranged on the wavy inner wall and the extending part 9, and the reinforcing ribs 8 extend along the length direction of the pipeline 1; the reinforcing ribs 8 on the inner wall of the hollow-out groove 62 are mutually embedded with the reinforcing ribs 8 on the extension part 9. The close connection of the adjacent heat-insulating layers is realized through the waves and the reinforcing ribs on the hollow-out grooves and the extending parts. In fig. 3, in order to clearly express the connection between the hollow-out groove and the wave-shaped wall of the extension portion, a gap is specially set between the hollow-out groove and the extension portion, and in practical cases, after the extension portion is inserted into the hollow-out groove, the wave-shaped walls of the extension portion and the extension portion are matched with each other and have no gap.

For the reinforcing rib 8: firstly, the arrangement of the reinforcing ribs 8 can further improve the structural strength of the heat-insulating layer 2, and can ensure the structural strength of the whole heat-insulating layer 2 under the condition of having the hollow-out layer 3 and even under the condition of reducing the thickness of the heat-insulating layer 2; secondly, the cross sections of the plurality of reinforcing ribs 8 can be arranged in a zigzag shape or an arc shape, and the zigzag shape is preferred in the embodiment; can be effectively to the last extension 9 of adjacent heat preservation 2 and the fretwork layer 3 between insert carry on spacing and connect the gomphosis between back extension 9 and the fretwork groove 62, strengthen being connected between the adjacent heat preservation 2. Aiming at the wavy inner wall, firstly, the corrugated inner wall can also have a certain damping effect on the basic heat insulation function of the heat insulation layer 2; secondly, because the wave crest, the trough extend along the length direction of pipeline 1 for can more effectual matching and connection after inserting between extension 9 and the fretwork layer 3 on the adjacent heat preservation 2, strengthen the joint strength between the adjacent heat preservation 2.

As shown in fig. 4 to 8, in other embodiments of the present invention, a connection layer 5 is further disposed between the hollow-out layer 3 and the pipeline 1, the connection layer 5 is integrally formed with the heat insulation blocks 61 and the heat insulation layer 4, one side of the connection layer 5 is attached to the periphery of the pipeline 1, and the other layer of the connection layer 5 is connected to the heat insulation blocks 61, that is, the heat insulation blocks 61 and the hollow-out layer 3 are uniformly distributed on the connection layer 5 at intervals, and the peripheries of the hollow-out grooves 62 are made of heat insulation materials, so that the connection between adjacent heat insulation layers 2 can be better reinforced by the extension portions 9.

As shown in fig. 5, it is preferable to fill the hollow-out grooves 62 with other heat insulating materials 10, such as materials with a thermal conductivity lower than that of the materials of the heat insulating blocks 61, the heat insulating layer 4, and the connecting layer 5, so as to further improve the heat insulating effect of the heat insulating pipe and balance the cost and the heat insulating effect. And the setting of tie coat 5 makes the periphery of fretwork groove 62 all be insulation material, can better realize filling the same or different thermal insulation material 10 in fretwork groove 62.

As shown in fig. 6-7, it is further preferable to form the inner walls of the hollows 62 in a wave shape and to provide reinforcing ribs 8 to reinforce the structural strength of the insulation layers and the connection between the adjacent insulation layers.

As shown in fig. 8, in order to facilitate the connection between the adjacent insulating layers 2, the two ends of the heat insulation block 61 are provided with extension parts 9, and the extension parts 9 are inserted into the hollow-out grooves 62 in the adjacent insulating layers 2 to connect the two adjacent insulating layers 2. In fig. 8, in order to clearly express the connection between the hollow-out groove and the wave-shaped wall of the extension portion, a gap is specially set between the hollow-out groove and the extension portion, and in practical cases, after the extension portion is inserted into the hollow-out groove, the wave-shaped walls of the extension portion and the extension portion are matched with each other and have no gap.

The hollow-out groove 62 is seted up through on heat preservation 2 to the insulating tube in this embodiment, and thermoblock 61 plays and supports the reinforcing effect, forms hollow-out groove 62 between the adjacent thermoblock 61 for 1 periphery of pipeline has local air to insulate against heat, can guarantee the intensity of heat preservation 2 and the heat preservation effect of insulating tube in reduce cost, control thickness. In some embodiments, the hollow-out grooves 62 may be filled with other heat insulating materials 10, preferably with materials having a thermal conductivity lower than that of the materials of the heat insulating blocks 61 and the heat insulating layer 4, so as to further improve the heat insulating effect of the heat insulating pipe. Simultaneously because the existence of expend with heat and contract with cold, deformation can take place for pipeline 1, and the setting of fretwork layer 3 can be better parcel pipeline 1 and the life of extension heat preservation 2. The extension portion that matches with the fretwork groove is set up, when the heat preservation is installed, can realize quick installation and connection through inserting the extension portion in the fretwork groove of adjacent heat preservation.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. The heat preservation pipe is characterized by comprising a pipeline positioned in the middle and a plurality of heat preservation layers wrapping the periphery of the pipeline, wherein the heat preservation layers are arranged along the length direction of the pipeline, and adjacent heat preservation layers are mutually connected; the heat preservation is including being close to the fretwork layer of pipeline and being located the insulating layer of fretwork layer periphery, the fretwork layer include with insulating layer integrated into one piece's insulating block, insulating block evenly distributed is in the periphery of pipeline, and is adjacent form the fretwork groove between the insulating block, at least part the insulating block has and extends to the outer extension of insulating layer tip, the extending direction of extension with the length direction of pipeline is the same, the extension holds in the fretwork inslot of adjacent heat preservation in order to be used for connecting adjacent heat preservation.

2. The insulating pipe according to claim 1, wherein the inner wall of the hollow-out groove and/or the outer wall of the extension portion are provided in a wave shape, and the wave shape extends along the length direction of the pipe.

3. The insulating pipe according to claim 1, wherein the corrugated inner wall and/or the extension portion is provided with a reinforcing rib, and the reinforcing rib extends along the length direction of the pipeline; and the reinforcing ribs on the inner wall of the hollow-out groove are mutually embedded with the reinforcing ribs on the extension part.

4. The thermal insulation pipe according to claim 3, wherein a connection layer is further arranged between the hollow layer and the pipeline, the connection layer, the thermal insulation block and the thermal insulation layer are integrally formed, one side of the connection layer is attached to the periphery of the pipeline, and the other layer of the connection layer is connected with the thermal insulation block.

5. A thermal insulating pipe according to claim 1, wherein the width of the blocks decreases from the top of the blocks to the bottom of the blocks.

6. The insulating pipe according to claim 1, wherein the cross-sectional area of the insulating block is greater than or equal to the cross-sectional area of the hollow-out groove.

7. The insulating pipe according to claim 6, wherein the shape of the heat insulating blocks is the same as that of the hollowed-out grooves, and the heat insulating blocks and the hollowed-out grooves are uniformly spaced on the outer wall of the pipeline.

8. The thermal insulation pipe according to claim 1, wherein the top surface and the bottom surface of the hollow groove are both arc-shaped, and the center of a circle corresponding to the arc-shaped top surface and the arc-shaped bottom surface of the hollow groove coincides with the center of a circle corresponding to the pipeline.

9. The insulating pipe according to claim 1, wherein a side of the insulating block adjacent to the pipe is curved to match an outer wall of the pipe.

10. The insulating pipe according to claim 1, wherein the arc shape of the top surface of the heat insulating block and the arc shape of the top surface of the hollow groove are located on the same circle, and the arc shape of the bottom surface of the heat insulating block and the arc shape of the bottom surface of the hollow groove are located on the other circle.