CN215445512U - Prefabricated heat preservation elbow of anti pipeline axial stress of outer pillar of integral ripple structure - Google Patents
Prefabricated heat preservation elbow of anti pipeline axial stress of outer pillar of integral ripple structure Download PDFInfo
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- CN215445512U CN215445512U CN202022935706.0U CN202022935706U CN215445512U CN 215445512 U CN215445512 U CN 215445512U CN 202022935706 U CN202022935706 U CN 202022935706U CN 215445512 U CN215445512 U CN 215445512U
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Abstract
Anti pipeline axial stress's of integration ripple structure outer casing prefabricated heat preservation elbow, including flexible ripple outer casing, heat preservation, locating support, alarm line, work return bend, flexible ripple outer casing cover is in the outside of work return bend, the locating support supports between flexible ripple outer casing and work return bend, the alarm line cross-under is between flexible ripple outer casing and work return bend and through the locating support location, the work return bend is prefabricated stereoplasm elbow, and the angle of elbow is for 0R ≦ 180 between flexible ripple outer casing and the work return bend it has the heat preservation to fill. The utility model has the beneficial effects that: 1) the flexible corrugated outer protective pipe is of an integrated structure without welding seams, and no welding defects and leakage occur; 2) the flexible corrugated outer protection pipe has excellent deformation resistance such as expansion and bending, effectively absorbs deformation generated by axial thermal displacement of the heat supply pipeline, and is not damaged.
Description
Technical Field
The utility model relates to pipe fittings for pipe networks in the field of heat supply and cold supply industries, in particular to a prefabricated heat-insulation elbow with an integrated corrugated structure outer protecting pipe and capable of resisting axial stress of a pipeline.
Background
The conventional method for the elbow heat-preservation outer protecting pipe in the prior industry comprises the following steps: a straight pipe is cut into a plurality of sections with certain angles, and then the sections are assembled and welded into a bent pipe form, which is commonly called as a shrimp waist structure. Problems with this construction are: the thickness of the local heat-insulating layer is far lower than the design thickness; welding defects are easy to occur on welding seams, leakage is caused, the strength is not enough, and the welding seams are easy to damage; when the pipeline generates axial thermal displacement, the shrimp waist cannot bear the deformation of the outer protective pipe at the elbow caused by the displacement, and the damage is generated.
The application publication number is CN109404629A discloses a prefabricated direct-buried plastic heat-insulating pipe capable of being coiled flexibly and a manufacturing method thereof, wherein an inner working pipe and an outer protective pipe of the prefabricated direct-buried plastic heat-insulating pipe are made of flexible materials and can be used for direct-buried laying of a curved pipeline, but the prefabricated direct-buried plastic heat-insulating pipe can only be used in occasions with large curvature radius, and the bending angles of the prefabricated direct-buried plastic heat-insulating pipe with 1D curvature radius and other small 90-degree curvature radii cannot be realized, so that the prefabricated direct-buried plastic heat-insulating pipe cannot replace the bends in a heat supply pipe network and a cold supply pipe network.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a prefabricated heat-insulation elbow with an integrated corrugated structure outer protection pipe for resisting the axial stress of a pipeline.
In order to achieve the purpose, the utility model adopts the following technical scheme:
anti pipeline axial stress's of integration ripple structure outer casing prefabricated heat preservation elbow, including flexible ripple outer casing, heat preservation, locating support, alarm line, work return bend, flexible ripple outer casing cover is in the outside of work return bend, the locating support supports between flexible ripple outer casing and work return bend, the alarm line cross-under is between flexible ripple outer casing and work return bend and through the locating support location, the work return bend is prefabricated stereoplasm elbow, and the angle of elbow is for 0R ≦ 180 between flexible ripple outer casing and the work return bend it has the heat preservation to fill.
The middle part of the working elbow is in a circular arc shape, and the two ends of the working elbow are straight pipe sections, and the working elbow is suitable for pipelines with any specification diameter.
The flexible corrugated outer protecting pipe comprises a flexible corrugated pipe section and a non-corrugated straight pipe section, wherein the non-corrugated straight pipe section is arranged at two ends of the flexible corrugated pipe section.
The flexible corrugated pipe section corresponds to the bending section of the working bent pipe, and a positioning bracket is arranged between the flexible corrugated pipe section and the bending section of the working bent pipe; the non-corrugated straight pipe section corresponds to the straight pipe section of the working elbow pipe in position, a positioning support is arranged between the non-corrugated straight pipe section and the straight pipe section of the working elbow pipe for positioning, and the straight pipe sections at the two ends of the working elbow pipe are longer than the non-corrugated straight pipe section.
Compared with the prior art, the utility model has the beneficial effects that:
1) the flexible corrugated outer protective pipe is of an integrated structure without welding seams, and has no welding defects and leakage;
2) the flexible corrugated outer protection pipe has excellent deformation resistance such as expansion and bending, effectively absorbs deformation generated by axial thermal displacement of the heat supply pipeline, and is not damaged.
Drawings
FIG. 1 is a schematic structural view of the prefabricated thermal insulation elbow with an integrated corrugated structure outer protecting pipe for resisting axial stress of a pipeline.
In the figure: 1. the flexible corrugated outer protecting pipe 2, the heat insulating layer 3, the working pipe 4, the positioning bracket 5 and the alarm line.
Detailed Description
The following embodiments are further illustrated by reference to the following specific examples:
as shown in fig. 1, the prefabricated thermal insulation elbow with the integrated corrugated structure outer protection pipe for resisting the axial stress of the pipeline comprises a flexible corrugated outer protection pipe, a thermal insulation layer, a positioning bracket, an alarm line and a working elbow pipe, wherein the flexible corrugated outer protection pipe is sleeved outside the working elbow pipe, the positioning bracket is supported between the flexible corrugated outer protection pipe and the working elbow pipe, the alarm line is connected between the flexible corrugated outer protection pipe and the working elbow pipe in a penetrating manner and is positioned through the positioning bracket, the working elbow pipe is a prefabricated hard elbow pipe, the angle of the elbow is more than 0 degree and less than or equal to 180 degrees, and the thermal insulation layer is filled between the flexible corrugated outer protection pipe and the working elbow pipe.
The middle part of the working elbow is in a circular arc shape, and the two ends of the working elbow are straight pipe sections, and the working elbow is suitable for pipelines with any specification diameter.
The flexible corrugated outer protecting pipe comprises a flexible corrugated pipe section and a non-corrugated straight pipe section, wherein the non-corrugated straight pipe section is arranged at two ends of the flexible corrugated pipe section.
The flexible corrugated pipe section corresponds to the bending section of the working bent pipe, and a positioning bracket is arranged between the flexible corrugated pipe section and the bending section of the working bent pipe; the non-corrugated straight pipe section corresponds to the straight pipe section of the working elbow pipe in position, a positioning support is arranged between the non-corrugated straight pipe section and the straight pipe section of the working elbow pipe for positioning, and the straight pipe sections at the two ends of the working elbow pipe are longer than the non-corrugated straight pipe section.
The flexible corrugated outer protecting pipe is flexible and bendable, and two ends of the flexible corrugated outer protecting pipe are provided with non-corrugated straight pipe sections with certain lengths for being in sealing connection with adjacent pipelines.
There is the alarm line that is used for pipeline leakage alarm to use in this patent product heat preservation, and the alarm line is fixed with the locating support.
The manufacturing method of the prefabricated heat-insulation elbow with the integrated corrugated structure outer protecting pipe and capable of resisting the axial stress of the pipeline comprises the following steps:
1) determining the length of the flexible corrugated outer protection pipe according to the curvature radius of the working bent pipe and the length of the straight pipe section;
2) manufacturing a flexible corrugated outer protection pipe according to the determined length of the flexible corrugated outer protection pipe, wherein two ends of the flexible corrugated outer protection pipe are provided with a section of straight pipe length as required;
3) bundling a proper positioning bracket on the working elbow and installing an alarm line;
4) sleeving a flexible corrugated outer protection pipe outside the working elbow pipe bound with the positioning support, and detecting that the exposed lengths of straight pipe sections at two ends of the working elbow pipe are the same;
5) installing a plugging die at the end part between the working elbow and the flexible corrugated outer protecting pipe;
6) injecting polyurethane foaming raw materials between the working bent pipe and the flexible corrugated outer protecting pipe, foaming and insulating;
7) and (5) removing the plugging die and cleaning.
The utility model can effectively solve the problems that the multi-section welding structure of the elbow outer protecting pipe is easy to have weld defects, the weld leaks, the strength is not enough and the pipe is easy to damage, and the thickness of the local heat-insulating layer is smaller than the design thickness of the pipeline.
Claims (4)
1. The prefabricated heat preservation elbow of anti pipeline axial stress of integration ripple structure outer casing, its characterized in that, including flexible ripple outer casing, heat preservation, locating support, alarm line, work return bend, flexible ripple outer casing cover is in the outside of work return bend, the locating support supports between flexible ripple outer casing and work return bend, the alarm line cross-under passes between flexible ripple outer casing and work return bend and passes through the locating support location, the work return bend is prefabricated stereoplasm elbow, and the angle of elbow is 0R ≦ 180 between flexible ripple outer casing and the work return bend it has the heat preservation to fill.
2. The prefabricated heat-insulating elbow with the function of resisting the axial stress of the pipeline for the outer protecting pipe with the integrated corrugated structure according to claim 1, wherein the middle part of the working elbow is in a circular arc shape, and the two ends of the working elbow are straight pipe sections, and the working elbow is suitable for pipelines with any specification diameter.
3. The prefabricated heat-insulating elbow with the integral corrugated structure outer protecting pipe resisting the axial stress of the pipeline as claimed in claim 1 or 2, wherein the flexible corrugated outer protecting pipe comprises a flexible corrugated pipe section and a non-corrugated straight pipe section, and the non-corrugated straight pipe sections are arranged at two ends of the flexible corrugated pipe section.
4. The prefabricated thermal insulation elbow with the integrated corrugated structure outer protecting pipe resisting the axial stress of the pipeline according to claim 3, wherein the flexible corrugated pipe section corresponds to the bending section of the working elbow pipe in position, and a positioning bracket is arranged between the flexible corrugated pipe section and the bending section of the working elbow pipe; the non-corrugated straight pipe section corresponds to the straight pipe section of the working elbow pipe in position, a positioning support is arranged between the non-corrugated straight pipe section and the straight pipe section of the working elbow pipe for positioning, and the straight pipe sections at the two ends of the working elbow pipe are longer than the non-corrugated straight pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935706.0U CN215445512U (en) | 2020-12-10 | 2020-12-10 | Prefabricated heat preservation elbow of anti pipeline axial stress of outer pillar of integral ripple structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935706.0U CN215445512U (en) | 2020-12-10 | 2020-12-10 | Prefabricated heat preservation elbow of anti pipeline axial stress of outer pillar of integral ripple structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215445512U true CN215445512U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022935706.0U Active CN215445512U (en) | 2020-12-10 | 2020-12-10 | Prefabricated heat preservation elbow of anti pipeline axial stress of outer pillar of integral ripple structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215445512U (en) |
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2020
- 2020-12-10 CN CN202022935706.0U patent/CN215445512U/en active Active
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