CN222836505U - Direct buried hot water insulation pipe joint patching structure - Google Patents
Direct buried hot water insulation pipe joint patching structure Download PDFInfo
- Publication number
- CN222836505U CN222836505U CN202421463251.9U CN202421463251U CN222836505U CN 222836505 U CN222836505 U CN 222836505U CN 202421463251 U CN202421463251 U CN 202421463251U CN 222836505 U CN222836505 U CN 222836505U
- Authority
- CN
- China
- Prior art keywords
- joint
- heat
- hot water
- adjacent
- outer protection
- 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
Landscapes
- Thermal Insulation (AREA)
Abstract
The joint repairing structure of the directly buried hot water heat preservation pipeline comprises butt joints extending out of PE outer protection pipes, the butt joints of two adjacent PE outer protection pipes are welded in an end-to-end coaxial mode, hooping assemblies are clamped in the two adjacent butt joints together, heat preservation mechanisms with two ends extending to the outer walls of the PE outer protection pipes are sleeved outside the two adjacent butt joints together, and heat shrinkage sealing mechanisms with two ends extending to the outer walls of the PE outer protection pipes are fixedly sleeved outside the heat preservation mechanisms. The joint repairing structure of the directly buried hot water heat insulation pipeline joint is characterized in that the joint repairing structure is formed by rigidly reinforcing the joint of the heat insulation pipeline from the inside of the joint by the stirrup assembly, improving the compression resistance of the joint, flexibly reinforcing the joint from the outside of the joint by the heat shrinkage sealing mechanism, improving the sealing property and the cracking resistance of the joint, and eliminating the cracking of the joint caused by the thermal extension of the working steel pipe by the combined action of the inside and the outside, thereby reducing the infiltration of underground water at the joint position to the greatest extent and protecting the polyurethane heat insulation layer.
Description
Technical Field
The utility model belongs to the technical field of heat-preservation pipeline connection structures, and particularly relates to a joint repairing structure of a direct-buried hot water heat-preservation pipeline.
Background
In actual engineering, because the joint of the directly buried hot water heat insulation pipeline is broken, the condition that the polyurethane is carbonized and failed after being heated due to the fact that the underground water permeates into the heat insulation layer sometimes occurs.
The conventional joint coating process mainly comprises hot-melt welding, baking and sealing of a heat shrinkage belt, on-site foaming and the like of an electric hot-melt sleeve (split type PE), wherein PE is adopted as a material, and embedded electric heating wires are arranged at the lap joint position of the PE outer protective tube and the lap joint position of the electric hot-melt sleeve.
Disclosure of utility model
The utility model aims to provide a joint repairing structure of a direct-buried hot water heat-insulation pipeline, which solves the problem that the joint repairing of the existing heat-insulation pipeline is easy to crack.
The joint repairing structure of the direct-buried hot water heat preservation pipeline comprises butt joints extending out of PE outer protection pipes, the butt joints of two adjacent PE outer protection pipes are welded in a head-to-tail coaxial mode, hooping assemblies are clamped in the two adjacent butt joints together, heat preservation mechanisms with two ends extending to the outer walls of the PE outer protection pipes are sleeved outside the two adjacent butt joints together, and heat shrinkage sealing mechanisms with two ends extending to the outer walls of the PE outer protection pipes are fixedly sleeved outside the heat preservation mechanisms.
The present utility model is also characterized in that,
The stirrup subassembly is including being located the reinforcement circle of adjacent two butt joint inner wall seam positions, and the both ends of reinforcement circle all are connected with a plurality of reinforcing bars rather than axial parallel along circumference even interval, and the reinforcing bar other end of reinforcement circle every end all is connected with the holding ring jointly, and the both ends of reinforcement circle all are equipped with a plurality of joint grooves along circumference even interval, and the joint groove that the inner wall of adjacent two butt joints corresponds the reinforcement circle every end all is fixed with the joint piece that the size suited.
The heat preservation mechanism comprises an electric heating melting sleeve, electric heating wires are embedded in the two ends of the electric heating melting sleeve at positions corresponding to the outer walls of the PE outer protective tubes, and a material injection opening and an exhaust hole are arranged on the side wall of the electric heating melting sleeve at intervals corresponding to the positions of the two adjacent butt joints.
The thermal contraction sealing mechanism comprises a thermal contraction ferrule, and PET packing belts and stainless steel wires are respectively sleeved at the positions, corresponding to the outer walls of the PE outer protective tubes, of the two ends of the thermal contraction ferrule.
A rubber-plastic sponge layer positioned outside the heat preservation mechanism is arranged in the heat shrinkage ferrule, and two ends of the rubber-plastic sponge layer extend to the outer wall of the PE outer protective tube.
The joint repairing structure of the directly buried hot water heat insulation pipeline has the advantages that the joint repairing structure of the directly buried hot water heat insulation pipeline is rigidly reinforced from the inside of the heat insulation pipeline joint through the stirrup assembly, the compression resistance of the joint is improved, the joint is flexibly reinforced from the outside of the heat insulation pipeline joint through the heat shrinkage sealing mechanism, the sealing property and the cracking resistance of the joint are improved, the joint is internally and externally combined to eliminate the cracking of the joint, which is easily caused by the thermal extension of a working steel pipe, so that the infiltration of underground water at the joint position is reduced to the greatest extent, and the polyurethane heat insulation layer is protected.
Drawings
FIG. 1 is a schematic structural view of a joint patch structure of a direct-buried hot water insulation pipeline of the present utility model;
FIG. 2 is a schematic structural view of a stirrup assembly in the joint patch structure of the direct-buried hot water insulation pipeline of the present utility model;
FIG. 3 is a schematic view of the mounting location of the stirrup assembly in the joint patch structure of the direct-burried hot water insulated pipeline of the present utility model;
FIG. 4 is a schematic structural view of a thermal insulation mechanism in the joint patch structure of the direct-buried hot water thermal insulation pipeline of the utility model;
Fig. 5 is an external structural schematic diagram of the joint patch structure of the direct-buried hot water insulation pipeline of the present utility model.
In the figure, the outer PE protective tube is 1, the butt joint is 2, the heat shrinkage ferrule is 3, the rubber plastic sponge layer is 4, the electric hot melting sleeve is 5, the PET packing belt is 6, the stainless steel wire is 7, the electric heating wire is 8, the material injection port is 9, the exhaust hole is 10, the clamping block is 11, the reinforcing ring is 12, the clamping groove is 13, the reinforcing strip is 14, and the supporting ring is 15.
Detailed Description
The utility model will be described in detail with reference to the accompanying drawings and detailed description.
Example 1
The utility model provides a joint repairing structure of a direct-buried hot water heat insulation pipeline, which is shown in fig. 1, and comprises steel pipe joints 2 extending out of a PE outer protection pipe 1, polyurethane foam is filled between the steel pipe and the PE outer protection pipe 1 as a heat insulation layer, the joints 2 of two adjacent PE outer protection pipes 1 are coaxially welded end to end, stirrup assemblies are clamped in the two adjacent joints 2 together, heat insulation mechanisms with two ends extending to the outer wall of the PE outer protection pipe 1 are sleeved outside the two adjacent joints 2 together, and heat shrinkage sealing mechanisms with two ends extending to the outer wall of the PE outer protection pipe 1 are fixedly sleeved outside the heat insulation mechanisms.
As shown in fig. 2 and 3, the stirrup assembly includes the reinforcement ring 12 that is located adjacent two butt joint 2 inner wall seam positions, and the both ends of reinforcement ring 12 all are connected with a plurality of reinforcement strips 14 rather than axial parallel along circumference even interval, and the reinforcement strip 14 other end at reinforcement ring 12 each end all is connected with support ring 15 jointly, and the both ends of reinforcement ring 12 all are equipped with a plurality of joint grooves 13 along circumference even interval, and the joint groove 13 that the inner wall of adjacent two butt joints 2 corresponds reinforcement ring 12 each end all is fixed with joint piece 11 that the size suited. During installation, the clamping grooves 13 of the reinforcing rings 12 are matched with the clamping blocks 11 to fix the positions of the reinforcing rings 12, and the inner walls of the butt joints 2 are reinforced by combining the reinforcing strips 14 and the supporting rings 15, so that the compression resistance of the welding positions of the two butt joints 2 is improved.
As shown in fig. 1 and 5, the heat-shrinkable sealing mechanism comprises a heat-shrinkable collar 3, which has higher integrity and better sealing performance than the segmented heat-shrinkable tape in the conventional process. Be provided with in the thermal contraction lasso 3 and be located the outer rubber and plastic sponge layer 4 of heat preservation mechanism, rubber and plastic sponge layer 4 adopts the great rubber and plastic sponge of porosity, has stronger pull resistance for thermal contraction lasso 3, and rubber and plastic sponge layer 4 cover is established at the position of two PE outer protection tubes 1 and is 30mm, and thermal contraction lasso 3 cover is established at the position of two PE outer protection tubes 1 and is 200mm, and the both ends of thermal contraction lasso 3 all overlap and are equipped with PET packing area 6 and stainless steel wire 7, and stainless steel wire 7 all is close to PET packing area 6. The PET packing belt 6 and the stainless steel wire 7 are strong in acid and alkali resistance, can withstand corrosion of groundwater, the PET packing belt 6 has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the creep resistance, fatigue resistance, friction resistance and dimensional stability are outstanding, the stainless steel wire 7 adopts a mode of locking after encircling two circles, and therefore the sealing surface of the heat-shrinkable ferrule 3 can be subjected to the same radial pressure at each point in the annular direction, and the sealing effect is ensured.
According to the directly buried hot water heat insulation pipeline joint structure, the stirrup assembly is used for carrying out rigid reinforcement from the inside of the heat insulation pipeline joint, so that the compression resistance of a joint position is improved, the heat shrinkage sealing mechanism is used for carrying out flexible reinforcement from the outside of the heat insulation pipeline joint, the sealing property and the cracking resistance of the joint position are improved, and the joint position is subjected to internal and external combined action to eliminate the cracking caused by the thermal extension of the working steel pipe, so that the infiltration of underground water at the joint position is reduced to the greatest extent, and the polyurethane heat insulation layer is protected.
Example 2
The utility model provides a joint repairing structure of a direct-buried hot water heat insulation pipeline, as shown in fig. 4, the heat insulation mechanism comprises an electric melting sleeve 5, electric heating wires 8 are embedded in the two ends of the electric melting sleeve 5 at positions corresponding to the outer walls of PE outer protection pipes 1, a material injection opening 9 and an exhaust hole 10 are arranged on the side wall of the electric melting sleeve 5 at intervals corresponding to the positions of two adjacent joints 2, polyurethane is injected into the welding positions of the joints 2 of the two PE outer protection pipes 1 through the material injection opening 9 in a matching manner, and the exhaust hole 10 maintains air pressure balance in the injection process, so that a polyurethane heat insulation layer is also formed at the repairing positions.
Through the mode, the joint structure of the directly buried hot water heat preservation pipeline can preserve heat of the joint structure at the joint 2 of the PE outer protection pipe 1 through the heat preservation mechanism, so that heat loss of the directly buried hot water heat preservation pipeline is reduced, and meanwhile, the rubber plastic sponge layer 4 outside the electric hot melting sleeve 5 also has good heat insulation performance, and can further preserve heat of the joint structure, so that heat loss of the directly buried hot water heat preservation pipeline is reduced.
Example 3
When the joint repairing structure of the direct-buried hot water heat-insulation pipeline is used, firstly, the stirrup assemblies are clamped at the joint positions of the inner walls of two adjacent butt joints 2, the clamping grooves 13 are matched with the clamping blocks 11 to fix the positions of the reinforcing rings 12, and then the inner walls of the butt joints 2 are reinforced by combining the reinforcing strips 14 and the supporting rings 15. After the two butt joints 2 are welded, an electric melting sleeve 5 is sleeved, hot melting welding is carried out through an electric heating wire 8, and polyurethane is injected into the butt joints by matching a material injection port 9 and an exhaust hole 10 to form an insulating layer. And then the heat-shrinkable ferrule 3 is sleeved, wherein the rubber-plastic sponge layer 4 has stronger tensile property relative to the heat-shrinkable ferrule 3, even if the welded joint is slightly cracked, the rubber-plastic sponge layer 4 can ensure that the joint position has a certain radial degree of freedom, the integral tightness of the joint position can be maintained by combining the heat-shrinkable ferrule 3, the infiltration of underground water is prevented, and the PET packing belts 6 and the stainless steel wires 7 at the two ends of the heat-shrinkable ferrule 3 have excellent physical and mechanical properties, so that the sealing effect is ensured.
According to the joint repairing structure of the direct-buried hot water heat preservation pipeline, the stirrup assembly is used for carrying out rigid reinforcement from the inside of the joint of the heat preservation pipeline, the compression resistance of the joint is improved, the heat shrinkage sealing mechanism is used for carrying out flexible reinforcement from the outside of the joint of the heat preservation pipeline, the sealing property and the cracking resistance of the joint are improved, the joint is internally and externally combined, the cracking of the joint, which is easily caused by the thermal extension of a working steel pipe, is eliminated, so that the infiltration of underground water at the joint position is reduced to the greatest extent, a polyurethane heat preservation layer is protected, and in addition, the heat preservation mechanism can be used for carrying out heat preservation on the joint repairing structure of the joint 2 of the PE outer protection pipe 1, and the heat loss of the direct-buried hot water heat preservation pipeline is reduced to the greatest extent.
Claims (5)
1. The utility model provides a directly bury hot water heat preservation pipeline joint mending structure, a serial communication port, including butt joint (2) that stretch out PE outer protection tube (1), the coaxial welding of butt joint (2) head and tail of two adjacent PE outer protection tube (1), joint has stirrup subassembly jointly in two adjacent butt joints (2), joint has jointly cup jointed the heat preservation mechanism that both ends extend to PE outer protection tube (1) outer wall outward adjacent two butt joint (2), heat preservation mechanism external fixation cup joints the thermal contraction sealing mechanism that both ends extend to PE outer protection tube (1) outer wall.
2. The joint repairing structure of the direct-buried hot water insulation pipeline according to claim 1, wherein the stirrup assembly comprises reinforcing rings (12) positioned at joint positions of inner walls of two adjacent butt joints (2), a plurality of reinforcing strips (14) parallel to the axial direction of the reinforcing rings are uniformly spaced along the circumferential direction at two ends of each reinforcing ring (12), supporting rings (15) are commonly connected with the other ends of the reinforcing strips (14) at each end of each reinforcing ring (12), a plurality of clamping grooves (13) are uniformly spaced along the circumferential direction at two ends of each reinforcing ring (12), and clamping blocks (11) with the sizes being matched are fixedly arranged on the inner walls of the two adjacent butt joints (2) corresponding to the clamping grooves (13) at each end of the reinforcing rings (12).
3. The joint repairing structure of the direct-buried hot water heat-insulating pipeline according to claim 1, wherein the heat-insulating mechanism comprises an electric melting sleeve (5), electric heating wires (8) are embedded in positions, corresponding to the outer walls of the PE outer protective pipes (1), in two ends of the electric melting sleeve (5), and material injection openings (9) and exhaust holes (10) are formed in the side walls of the electric melting sleeve (5) at intervals corresponding to the positions of two adjacent butt joints (2).
4. The joint repairing structure of the direct-buried hot water heat-preserving pipeline according to claim 1, wherein the heat-shrinkage sealing mechanism comprises a heat-shrinkage ferrule (3), and PET packing belts (6) and stainless steel wires (7) are sleeved at positions, corresponding to the outer walls of the PE outer protective pipes (1), outside the two ends of the heat-shrinkage ferrule (3).
5. The joint repairing structure of the directly buried hot water heat preservation pipeline according to claim 4, wherein a rubber plastic sponge layer (4) positioned outside the heat preservation mechanism is arranged in the heat shrinkage ferrule (3), and two ends of the rubber plastic sponge layer (4) extend to the outer wall of the PE outer protection pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421463251.9U CN222836505U (en) | 2024-06-25 | 2024-06-25 | Direct buried hot water insulation pipe joint patching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421463251.9U CN222836505U (en) | 2024-06-25 | 2024-06-25 | Direct buried hot water insulation pipe joint patching structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222836505U true CN222836505U (en) | 2025-05-06 |
Family
ID=95526052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421463251.9U Active CN222836505U (en) | 2024-06-25 | 2024-06-25 | Direct buried hot water insulation pipe joint patching structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222836505U (en) |
-
2024
- 2024-06-25 CN CN202421463251.9U patent/CN222836505U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4060263A (en) | Conduit for conveying a fluid, the temperature of which is different from the surrounding temperature | |
| CA2985172C (en) | Joining lined pipe sections | |
| KR102453408B1 (en) | double insulation pipe use for heat wire for preventing freezing is protected, and airtightness, watertightness, heat insulation, and durability is reinforced and installation method thereof | |
| CN222836505U (en) | Direct buried hot water insulation pipe joint patching structure | |
| CN116336266A (en) | A tile-cotton-foam composite structure prefabricated overhead insulation pipe and its manufacturing method | |
| CN102021945A (en) | Method for connecting HDPE double-wall ripple drainage pipe | |
| CN212107495U (en) | Heat preservation structure of insulating tube butt joint port | |
| CN210461973U (en) | Novel direct-buried heating power pipeline waterproof sleeve | |
| CN219954694U (en) | Novel compound direct-buried steam heat-insulation pipe network system | |
| CN218378268U (en) | Pipeline joint coating device and pipeline system | |
| CN103574231B (en) | A kind of method of construction of thermal insulation of thermal insulation pipeline joint | |
| CN218914223U (en) | Maintenance-free prefabricated heat preservation device for directly-buried sleeve compensator | |
| CN108332001A (en) | A kind of thermal insulation pipe joint structure and processing method of built-in fiber | |
| RU114503U1 (en) | FIXED BRACKET WITH POLYURETHANE INSULATION | |
| CN216408186U (en) | Prefabricated polyurethane heat-preservation fixed heat-insulation pipe bracket | |
| CN110762308A (en) | Plastic steel winding pipe and connecting structure | |
| CN114110297B (en) | Plastic sleeve steel steam direct-buried prefabricated pipeline and construction joint repairing method | |
| CN223622450U (en) | Prefabricated overhead composite heat-insulating pipe with long service life | |
| CN210219019U (en) | Prefabricated type heat preservation elbow | |
| CN108386625A (en) | A kind of reinforced type prefabricated direct-buried thermal insulation pipe road | |
| CN213598750U (en) | Steel faucet prestressed steel cylinder concrete thermal insulation pipe | |
| CN113606427A (en) | A kind of heat pipeline end face waterproof sealing member and butt sealing structure | |
| CN222363503U (en) | Thermal pipeline installation through-wall joint capable of absorbing axial thermal displacement | |
| KR102452441B1 (en) | double insulation pipe use for freeze protection, heat wire protection and installation method thereof | |
| CN223708883U (en) | A rigid polyurethane foam pre-insulated pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |