CN216045870U - Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe - Google Patents
Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe Download PDFInfo
- Publication number
- CN216045870U CN216045870U CN202121421657.7U CN202121421657U CN216045870U CN 216045870 U CN216045870 U CN 216045870U CN 202121421657 U CN202121421657 U CN 202121421657U CN 216045870 U CN216045870 U CN 216045870U
- Authority
- CN
- China
- Prior art keywords
- wall
- penetrating
- steel pipe
- pipe
- working steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model discloses a prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing, which comprises a wall-penetrating section working steel pipe, wherein the wall-penetrating section working steel pipe penetrates through a concrete retaining wall; the wall penetrating section working steel pipe is coaxially sleeved with a first outer protection pipe, the outer wall of the wall penetrating section working steel pipe is fixedly connected with the inner ends of a plurality of support columns, the support columns are distributed along the radial direction, the outer end of each support column is provided with a rolling bearing, and the rolling bearing is supported on the inner wall of the first outer protection pipe; and a prefabricated heat insulation layer is filled between the wall-penetrating section working steel pipe and the first outer protective pipe. The utility model can effectively solve the problem of leakage of the gap between the waterproof sleeve and the pipeline. The device can effectively prevent the phenomena of water inflow and backflow of basements and well floors in rainy days, effectively protects the property safety of people and the life safety of overhaul and maintenance personnel, and has remarkable social and economic benefits.
Description
Technical Field
The utility model belongs to the technical field of building water supply and drainage and heating and ventilation engineering, relates to a prefabricated heat-preservation or cold-preservation pipeline, and particularly relates to a prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing.
Background
In the process of building urban infrastructure, heat preservation or cold insulation pipelines are generally required to be arranged for the functions of heating or cooling, water and the like of buildings. Pipelines such as oil supply, gas-liquid two-phase flow, liquefied petroleum gas, lubricating oil and the like which need to be kept warm or cold are also laid in industrial construction. When the pipelines are arranged, the pipelines often need to pass through the wall of an inspection well, the wall of a building, the outer wall of an underground structure and the like. Because the pipelines have the requirement of heat preservation or cold preservation, and the internal working pipelines can extend or contract to a certain extent due to the change of medium parameters, the commonly used method of embedding the waterproof sleeves during the construction of the retaining wall, filling materials such as polysulfide sealant and asphalt hemp ropes in the gaps between the pipelines and the sleeves for water prevention after the pipelines are installed can generate new gaps due to the extension or contraction of the pipelines, and cannot completely seal the gaps, so that the typical leakage points are formed. Particularly, the phenomenon of backward flowing of the basement and the well chamber can be caused in rainy days, so that the ground of the basement and the well chamber is soaked, and the engineering quality and the overhauling and maintenance are influenced. The disadvantages of the conventional method are gradually shown along with the time, so that the research on a novel special prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing capable of solving the problem of water seepage in the gap between a heat-preservation or cold-preservation pipeline and an embedded casing is very important.
The method for embedding the waterproof sleeve when the existing heat-insulation or cold-insulation pipeline passes through the retaining wall is mainly divided into the following three methods:
firstly, a common steel pipe is arranged as a wall bushing, and after a heat-preservation or cold-preservation pipeline passes through the bushing and is installed, a gap between the pipeline and the bushing is filled with polysulfide sealant, asphalt hemp rope and other materials for water prevention. The leakage point of the method is divided into two parts, one is that the concrete shrinks after being solidified to form a gap with the steel pipe for water leakage; and secondly, the gap between the steel pipe and the heat preservation or cold insulation pipeline is subjected to water seepage due to the expansion and contraction of the heat supply or cold supply pipeline.
And secondly, arranging a rigid waterproof sleeve with a wing ring, and filling materials such as polysulfide sealant, asphalt hemp ropes and the like into a gap between the heat-preservation or cold-preservation pipeline and the sleeve to perform waterproofing after the heat-preservation or cold-preservation pipeline passes through the sleeve to be installed. The leakage point of the method is that the heat supply or cold supply pipeline repeatedly stretches in the sleeve for a long time to cause the loss of the sealing material filled in the gap between the heat preservation or cold preservation pipeline and the sleeve, thereby generating the gap water seepage.
And thirdly, a flexible waterproof sleeve with a wing ring is arranged, a high-strength grouting material is filled in the gap between the sleeve and the prefabricated heat-preservation or cold-preservation pipeline, and expansion water stop strips, compression flanges and the like are arranged at two ends of the sleeve for sealing and fastening. The leakage point of the method is the problems of sealing material loss, water stop loosening and the like caused by repeated expansion and contraction of the heat supply or cold supply pipeline in the sleeve for a long time, wherein the sealing material loss, the water stop loosening and the like are caused by the gap filling between the heat insulation or cold insulation pipeline and the sleeve, and further gap water seepage is generated.
In the initial operation stage of heat supply, the prefabricated heat-insulating or cold-insulating pipeline is tightly attached to the sealing material in the sleeve, and the waterproof and anti-seepage effects are excellent. Along with the prolonging of the service life, the water seepage phenomenon of the gap between the prefabricated heat preservation or cold insulation pipeline and the casing pipe is gradually shown under the influence of temperature change, the increase of the expansion times of the pipeline, untimely supplement of the loss of the sealing material and the like, and the phenomenon that rainwater flows back into the basement or the well room in rainy days even though the rainwater is not maintained in time is generated.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a prefabricated heat-insulation or cold-insulation wall-penetrating waterproof casing pipe, which solves the technical problem that the prefabricated heat-insulation or cold-insulation pipeline cannot be prevented from leaking for a long time in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing comprises a wall-penetrating section working steel pipe, wherein the wall-penetrating section working steel pipe penetrates through a concrete retaining wall; the wall-penetrating section working steel pipe is coaxially sleeved with a first outer protection pipe, the outer wall of the wall-penetrating section working steel pipe is fixedly connected with the inner ends of a plurality of support columns, the support columns are distributed along the radial direction, the outer end of each support column is provided with a rolling bearing, and the rolling bearing is supported on the inner wall of the first outer protection pipe;
and a prefabricated heat insulation layer is filled between the wall-penetrating section working steel pipe and the first outer protective pipe.
The utility model also has the following technical characteristics:
and the rotating central shaft of the rolling bearing is parallel to the central shaft of the wall penetrating section working steel pipe.
The rolling bearings are more than two groups, and each group of rolling bearings are all positioned on the axial section of the same wall penetrating section working steel pipe.
Each group of rolling bearings is more than four.
The first outer protecting pipe is arranged in the concrete retaining wall through a wing ring.
The outer sheath pipe of second of coaxial cover of normal section work steel pipe, also pack between normal section work steel pipe and the outer sheath pipe of second and have prefabricated heat preservation, be connected through repaired mouth overlap joint pipe respectively between first outer sheath pipe and the outer sheath pipe of second.
The thickness of the prefabricated heat insulation layer coated outside the wall penetrating section working steel pipe is larger than that of the prefabricated heat insulation layer coated outside the normal section working steel pipe.
Compared with the prior art, the utility model has the following technical effects:
the utility model can effectively solve the problem of leakage of the gap between the waterproof sleeve and the pipeline.
The utility model (II) can solve the problems that the gap between the embedded sleeve and the concrete retaining wall is seeped when the heat-preservation or cold-preservation pipeline which puzzles the engineering project for many years passes through the concrete retaining wall, and the internal working steel pipe is required to stretch and retract without influencing the water resistance of the side wall, can effectively prevent the water inflow and the backflow of the basement and the well chamber ground in rainy days, effectively protects the property safety of people and the life safety of overhaul and maintenance personnel, and has remarkable social benefit and economic benefit.
Drawings
Fig. 1 is a schematic view of the overall structure of a prefabricated heat-insulating or cold-insulating wall-penetrating waterproof casing.
Fig. 2 is a schematic sectional structure view of the prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing, namely a schematic structural view of a section a-a in fig. 1.
Fig. 3 is a schematic view of the mounting position structure of the support column and the rolling bearing.
The meaning of the individual reference symbols in the figures is: 1-wall-penetrating section working steel pipe, 2-concrete retaining wall, 3-first outer protective pipe, 4-support column, 5-rolling bearing, 6-second outer protective pipe, 7-repaired mouth lap joint pipe, 8-prefabricated heat insulation layer, 9-wing ring and 10-normal section working steel pipe.
The present invention will be explained in further detail with reference to examples.
Detailed Description
The utility model mainly aims to solve the problem that when a heat-insulating or cold-insulating pipeline passes through the wall of an inspection well, the wall of a building, the outer wall of an underground structure and the like, a gap is generated between a pipeline shell and a sleeve pipe due to expansion caused by heat and contraction caused by cold of the pipeline, so that leakage is caused. Particularly, the phenomenon of backward flowing of the basement and the well chamber can be caused in rainy days, so that the ground of the basement and the well chamber is soaked, and the engineering quality and the overhauling and maintenance are influenced.
All parts in the present invention are those known in the art, unless otherwise specified.
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example (b):
in this embodiment, a prefabricated heat-insulating or cold-insulating wall-penetrating waterproof casing is provided, as shown in fig. 1 to 3, a wall-penetrating section working steel pipe 1 penetrates through a concrete retaining wall 2; a first outer protection pipe 3 is coaxially sleeved outside the wall penetrating section working steel pipe 1, the inner ends of a plurality of support columns 4 are fixedly connected to the outer wall of the wall penetrating section working steel pipe 1, the support columns 4 are distributed along the radial direction, a rolling bearing 5 is installed at the outer end of each support column 4, and the rolling bearing 5 is supported on the inner wall of the first outer protection pipe 3;
and a prefabricated heat insulation layer 8 is filled between the wall-penetrating section working steel pipe 1 and the first outer protective pipe 3.
In this embodiment, the wall-through section working steel pipe 1 refers to a steel pipe or other material pipe through which a medium (water, steam, gas-liquid two-phase flow, oil, liquefied petroleum gas, natural gas, or the like) flows, the material of the pipe may be a seamless steel pipe (20# steel), a spiral welded steel pipe (Q235B), a petroleum steel pipe (J55), a random copolymer Polypropylene Pipe (PPR), or the like, and the pipe diameter and the wall thickness of the wall-through section working steel pipe 1 are consistent with those of the normal section working steel pipe 10.
In this embodiment, the prefabricated insulating layer 8 can be selected from rigid polyurethane insulating materials, centrifugal glass wool, aerogel and other forms or combinations according to the temperature of the medium flowing through the working steel pipe and the requirements of heat preservation or cold preservation, and is tightly attached to the outside of the wall-penetrating section working steel pipe 1, and the gap between the outer protecting pipe and the wall-penetrating section working steel pipe 1 is filled.
In this embodiment, the first outer protective pipe 3 is generally a steel outer protective pipe, and the specification is generally one greater than the sum of the thicknesses of the prefabricated heat preservation layers 8 of the normal section working steel pipe 10, which is obtained by adding 2 times to the outer diameter of the wall-penetrating section working steel pipe 1, and the material thereof is a seamless steel pipe (20# steel) or a spiral welded steel pipe (Q235B).
In this embodiment, the support column 4 mainly functions to support the weight of the first outer protection pipe 3, control the gap between the first outer protection pipe 3 and the wall penetrating section working steel pipe 1 to be consistent, protect the internal thermal insulation material from being compressed, and keep the density uniform, and the support column 4 is welded to the wall penetrating section working steel pipe 1 at the side of the wall penetrating section working steel pipe 1.
In a preferred embodiment of the present invention, the rotation center axis of the rolling bearing 5 is arranged parallel to the center axis of the wall penetrating segment working steel pipe 1. Preferably, the rolling bearings 5 are more than two groups, and each group of rolling bearings 5 is positioned on the axial section of the same wall-penetrating section working steel pipe 1. More preferably, each set of rolling bearings 5 is four or more. The rolling bearing 5 has the main effects that the wall-penetrating section working steel pipe 1 can roll and slide in the first outer protecting pipe 3 without wearing the inner wall of the first outer protecting pipe 3 and driving the first outer protecting pipe 3 to move when expanding with heat and contracting with cold, so that the first outer protecting pipe 3 can be kept with the concrete retaining wall 2 into a whole, and the sealing performance is good.
As a preferable aspect of the present invention, the first outer jacket 3 is installed in the concrete retaining wall 2 by a wing ring 9. The wing rings 9 are mainly used to isolate the water outside the concrete retaining wall 2 and prevent the water outside the concrete retaining wall 2 from entering the inner side of the retaining wall through the gap between the first outer protecting pipe 3 and the concrete retaining wall 2. The wing ring 2 is generally made of a steel plate and is welded with the first outer protecting pipe 3.
As a preferred scheme of the utility model, a second outer protective pipe 6 is coaxially sleeved outside the normal section working steel pipe 10, and a prefabricated heat-insulating layer 8 is also filled between the normal section working steel pipe 10 and the second outer protective pipe 6. The second outer protective pipe 6 is generally an outer protective pipe of a heat-insulating or cold-insulating pipeline of the normal-section working steel pipe 10. If the pipeline is an overhead pipeline, the outer protective pipe is generally galvanized iron sheet or aluminum sheet; in the case of a buried pipeline, the outer protective pipe is typically a polyethylene outer protective pipe. The second outer protective pipe 6 mainly protects the inner prefabricated heat-insulating layer and the working steel pipe from being damaged by external conditions.
As a preferred scheme of the utility model, the thickness of the prefabricated heat-insulating layer 8 coated outside the wall-through section working steel pipe 1 is larger than that of the prefabricated heat-insulating layer 8 coated outside the normal section working steel pipe 10. And (3) welding and connecting the exposed working steel pipes reserved at the two ends of the wall-through section working steel pipe 1 with the exposed working steel pipes reserved in the normal section working steel pipe 10, and performing flaw detection after the welding and connecting are completed. And then, the exposed section is subjected to heat preservation according to the heat preservation requirement of the working steel pipe 10 at the normal section, if the exposed section is an overhead pipeline, centrifugal glass silk floss can be adopted for heat preservation, and if the exposed section is a directly-buried pipeline, rigid polyurethane foam foaming heat preservation can be adopted.
As a preferable aspect of the present invention, the first outer protection pipe 3 and the second outer protection pipe 6 are connected to each other through a joint overlap pipe 7. The joint repairing and connecting pipe 7 is made of galvanized iron sheet or polyethylene outer protective coiled material, and a stretch-proof heat shrinkage belt special for directional drilling is adopted for joint repairing (the joint length of two sides needs to meet the requirement), and an air tightness test is carried out. And after the air tightness detection is correct, the construction of the section is considered to be finished.
The prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing pipe disclosed by the utility model is pre-embedded when the concrete retaining wall 2 is constructed, and the installation angle and the installation direction of the waterproof casing pipe are ensured to be smoothly and smoothly connected with pipelines on two sides.
In the operation process of the prefabricated heat-preservation or cold-preservation wall-penetrating waterproof sleeve, the wall-penetrating section working steel pipe 1 can expand with heat and contract with cold and can roll and slide inside, and the first outer protecting pipe 3 is tightly combined with the concrete retaining wall 2 through the wing ring 9, so that the leakage possibility does not exist. The joint sections at the two ends of the prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing can effectively absorb a small amount of expansion with heat and contraction with cold generated by the first outer protective pipe 3.
Claims (7)
1. A prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing comprises a wall-penetrating section working steel pipe (1), wherein the wall-penetrating section working steel pipe (1) penetrates through a concrete retaining wall (2); the wall-penetrating working steel pipe is characterized in that a first outer protection pipe (3) is coaxially sleeved outside the wall-penetrating working steel pipe (1), the inner ends of a plurality of supporting columns (4) are fixedly connected to the outer wall of the wall-penetrating working steel pipe (1), the supporting columns (4) are distributed along the radial direction, a rolling bearing (5) is installed at the outer end of each supporting column (4), and the rolling bearing (5) is supported on the inner wall of the first outer protection pipe (3);
and a prefabricated heat-insulating layer (8) is filled between the wall-penetrating section working steel pipe (1) and the first outer protective pipe (3).
2. The prefabricated heat or cold insulation wall-penetrating waterproof sleeve as claimed in claim 1, wherein a rotation central shaft of the rolling bearing (5) is arranged in parallel with a central shaft of the wall-penetrating section working steel pipe (1).
3. The prefabricated heat-insulating or cold-insulating wall-penetrating waterproof casing pipe as claimed in claim 2, wherein the number of the rolling bearings (5) is more than two, and each rolling bearing (5) is positioned on the axial section of the same wall-penetrating section working steel pipe (1).
4. Prefabricated heat or cold insulation wall-penetrating water-proof sleeve according to claim 3, wherein each set of rolling bearings (5) is more than four.
5. The prefabricated heat or cold insulation wall-penetrating waterproof jacket according to claim 1, wherein said first outer jacket (3) is installed in the concrete retaining wall (2) by means of wing rings (9).
6. The prefabricated heat-preservation or cold-preservation wall-penetrating waterproof casing pipe as claimed in claim 1, wherein a second outer protection pipe (6) is coaxially sleeved outside the normal section working steel pipe (10), a prefabricated heat-preservation layer (8) is filled between the normal section working steel pipe (10) and the second outer protection pipe (6), and the first outer protection pipe (3) and the second outer protection pipe (6) are respectively connected through a repaired mouth overlapping pipe (7).
7. The prefabricated heat-preservation or cold-preservation wall-penetrating waterproof sleeve as claimed in claim 6, wherein the thickness of the prefabricated heat-preservation layer (8) coated outside the wall-penetrating section working steel pipe (1) is larger than that of the prefabricated heat-preservation layer (8) coated outside the normal section working steel pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121421657.7U CN216045870U (en) | 2021-06-24 | 2021-06-24 | Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121421657.7U CN216045870U (en) | 2021-06-24 | 2021-06-24 | Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045870U true CN216045870U (en) | 2022-03-15 |
Family
ID=80616429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121421657.7U Active CN216045870U (en) | 2021-06-24 | 2021-06-24 | Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216045870U (en) |
-
2021
- 2021-06-24 CN CN202121421657.7U patent/CN216045870U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110985764A (en) | Vibration-damping waterproof wall penetrating pipe structure and construction method thereof | |
| CN216045870U (en) | Prefabricated heat preservation or cold insulation wall-penetrating waterproof casing pipe | |
| CN113863346A (en) | Directly-buried steam pipeline caisson structure and construction method | |
| CN201184481Y (en) | Composite heat preservation structure of prefabricated direct-buried steam pipeline | |
| CN2611722Y (en) | Multi-shielded vacuum composite corrosion-proof thermal insulating and directly buryed steam pipe | |
| CN209907415U (en) | Vertical jacking opening device for jacking pipe | |
| CN111006072A (en) | Hot rod type pipe support with self-compensation stress-reduction efficient heat insulation pipe support | |
| CN105257917A (en) | Variable-diameter type corrosion-preventing high-temperature-resisting buried composite thermal insulation pipeline and mounting method | |
| CN213871460U (en) | Water leakage prevention structure of service pipe | |
| CN206018152U (en) | A kind of high prefabricated direct-buried thermal insulation pipe of structural strength | |
| CN104154324B (en) | Anchor block integrally mixes Method for Installation with valve well | |
| CN217234681U (en) | Be applied to component that heat supply pipeline rigidity wall bushing waterproof performance upgraded | |
| CN201306580Y (en) | Steel outer protective polyurethane prefabricated insulating tube | |
| CN1047225C (en) | Fully-enlosed cave internal anti-leakage method | |
| CN211736091U (en) | Waterproof structure of roof with inverted drainage pipe | |
| CN211525846U (en) | Hot rod type pipe support with fixed efficient heat insulation pipe support | |
| CN102619254A (en) | Thermal insulation water supply well through geothermal method and construction method thereof | |
| RU191384U1 (en) | CONNECTION DEVICE FOR HEAT-INSULATED PIPELINE WITH CONCRETE COATING | |
| CN108253205B (en) | Pipeline and assembly thereof | |
| RU2718765C1 (en) | Heat insulating direction | |
| CN213117794U (en) | Water-stopping flexible sleeve for wall-penetrating sleeve of frequently-expanded and contracted underground pipeline inspection well | |
| CN216843641U (en) | Prefabricated direct-burried electric tracing insulating tube | |
| CN117386896B (en) | Environment-friendly prefabricated heat-insulating pipeline based on foaming hardening in sleeve and preparation method thereof | |
| CN212960232U (en) | Multiple sealed prefabricated wall waterproof sealing pipe fitting that wears | |
| RU180358U1 (en) | Thermally-insulated pipeline product for above-ground laying of high-temperature heating networks, heating mains and technological pipelines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |