Jacket pipe thermal shrinkage connecting sleeve and jacket pipe connecting structure
By designing a heat-shrinkable jacket tube connector, using high-density polyethylene material and electric heating wire for heat fusion connection, the problems of high transportation cost and large space requirements of the jacket tube connector are solved, achieving low-cost and efficient connection construction.
Patent Information
- Application Number
- CN202423310315.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing jacket tube connectors are expensive to transport, take up a lot of space, and are inconvenient to connect, affecting construction costs and efficiency.
Design a jacket tube heat shrink connector sleeve with shrink sections and heat fusion layers at both ends. It is made of high-density polyethylene material and achieves heat fusion connection by heating with electric heating wire. The connector sleeve is assembled on site, and a fixing plate is provided on the outside to enhance the connection strength and sealing.
Reduce transportation costs, minimize space occupation, improve connection strength and sealing, simplify construction process, and reduce construction costs.
Smart Images
Figure CN223579302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe connection technology, specifically to a jacketed tube heat shrink fitting and a jacketed tube connection structure. Background Technology
[0002] In fields such as centralized heating, cooling, and oil and gas, pipelines used for transporting media require insulation to ensure their temperature performance during transport. Jacketed pipes are widely used in this application. Jacketed pipes are typically prefabricated in a factory according to their required length and then installed on-site, forming a joint at the junction of two jacketed pipes. The joint of the jacketed pipe is a crucial component of a prefabricated direct-buried jacketed pipe system; its structure and construction method are critical. Poor connection at the joint can easily lead to water ingress.
[0003] The connection of existing jacket pipes generally uses a connecting sleeve. In the process of use, the connecting sleeve needs to be put on the outside of the jacket pipe first. After the steel pipes of the two jacket pipes are welded together, the connecting sleeve is moved to the middle of the two jacket pipes. There are heating wires installed inside both ends of the connecting sleeve in advance. By energizing the heating wires, the two ends of the connecting sleeve and the ends of the two jacket pipes that are close to each other are heat-fused to realize the connection between the connecting sleeve and the two jacket pipes. Then, foam material is filled inside the connecting sleeve as an insulation layer structure.
[0004] The connecting sleeves used in the above connection method are in the shape of round tubes. The connecting sleeves per unit weight occupy a large space. However, the manufacturers of the connecting sleeves are usually far away from the construction site, so the connecting sleeves need to be transported to the construction site. As a result, the transportation cost is high, which increases the cost of the entire construction project. Utility Model Content
[0005] The purpose of this utility model is to provide a heat-shrinkable jacket tube connector and a jacket tube connection structure to solve the problems mentioned in the background art.
[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:
[0007] A heat-shrinkable jacket tube connector sleeve, wherein shrink sections are provided at both ends of the heat-shrinkable jacket tube connector sleeve, and the heat-shrinkable jacket tube connector sleeve includes a connecting sleeve piece, wherein a first connecting end and a second connecting end are provided circumferentially, and the first connecting end and the second connecting end are connected to form a connecting part.
[0008] The connecting sleeve includes a heat-shrinkable layer, and a heat-fusion layer is provided on the inner side of the heat-shrinkable layer. The heat-fusion layer at the first connecting end and the heat-fusion layer at the second connecting end are heat-fused together.
[0009] As a further improvement, the first connecting end is provided with a first sloping end wall, and the second connecting end is provided with a second sloping end wall, the slopes of the first and second sloping end walls correspond to each other.
[0010] As a further improvement, the heat melting layer is a high-density polyethylene material layer, and the heat shrinking layer is a radiation cross-linked polyethylene material layer.
[0011] As a further improvement, the inner wall of the heat melting layer on the inner side of the shrinking section is provided with an electric heating wire, and the inner wall of the heat melting layer of the first and second connecting ends is provided with an electric heating wire.
[0012] As a further improvement, the outer side of the connecting part is provided with a fixing sheet.
[0013] The utility model provides jacket pipe connecting structure, including two jackets, two jacket all include steel pipeline, the outside of steel pipeline is covered with first heat preservation layer, the outside of first heat preservation layer is covered with outer protection layer, the length of first heat preservation layer and outer protection layer all are less than the length of steel pipeline, the end sealed welding connection of two steel pipeline;
[0014] Second heat preservation layer is established between the first heat preservation layer of two jackets, the second heat preservation layer is covered on steel pipeline, the second heat preservation layer is equipped with jacket pipe heat shrinkable connecting sleeve, and the two shrinking sections of jacket pipe heat shrinkable connecting sleeve are respectively set on the outer protection layer of two jackets and are sealedly connected with the outer protection layer.
[0015] As a further improvement, the heat melting layer of the shrinking section is heat meltingly connected with the outer wall of the outer protection layer.
[0016] As a further improvement, the second heat preservation layer is a foamed material heat preservation layer.
[0017] Due to the adoption of the above technical solutions, the utility model has the beneficial effects that:
[0018] The jacket pipe heat shrinkable connecting sleeve provided by the utility model is connected to form a connecting sleeve by connecting sleeve pieces on site, the connecting sleeve pieces are stacked and placed during transportation, the space occupied is small, transportation is facilitated, and construction is convenient. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is the structure schematic view of the connecting sleeve piece in example 1;
[0020] Figure 2 is the sectional view of the connecting sleeve in example 1;
[0021] Figure 3 is the structure schematic view of the jacket pipe connecting structure in example 2;
[0022] Wherein: 1- connecting sleeve piece, 2- jacket pipe heat shrinkage connecting sleeve, 3- first slope end wall, 4- second slope end wall, 5- connecting part, 6- fixing piece, 7- hot melt layer, 8- heat shrinkage layer, 9- jacket pipe, 10- steel pipeline, 11- first heat insulation layer, 12- outer protective layer, 13- second heat insulation layer. DETAILED DESCRIPTION
[0023] The utility model will be further explained in connection with specific embodiment and drawings. Among them, the drawings are only for example explanation, and the representation is only schematic diagram, and can not be understood as the limitation to the application; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their description in the drawings can be omitted.
[0024] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar parts; in the description of the utility model, it is understood that if the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore the positional relationship description in the drawings is only for example explanation, and can not be understood as the limitation to the application, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.
[0025] Embodiment 1
[0026] As shown in Figure 1 and 2 A jacket pipe heat shrinkage connecting sleeve, the two ends of the jacket pipe heat shrinkage connecting sleeve 2 are respectively provided with a shrinkage section, and the jacket pipe heat shrinkage connecting sleeve 2 comprises a connecting sleeve piece 1, the connecting sleeve piece 1 is provided with a first connecting end and a second connecting end along the circumference, and the first connecting end 3 and the second connecting end 4 are connected to form a connecting part 5.
[0027] The connecting sleeve piece 1 comprises a heat shrinkage layer 8, the inner side of the heat shrinkage layer 8 is provided with a hot melt layer 9, the hot melt layer 9 of the first connecting end and the hot melt layer 9 of the second connecting end are hot melt connected, the hot melt layer is hot melt connected, the connecting strength is high, and the overall strength requirement of the jacket pipe heat shrinkage connecting sleeve is guaranteed.
[0028] In the embodiment, the first connecting end is provided with a first slope end wall 3, the second connecting end is provided with a second slope end wall 4, the slope surface of the first slope end wall corresponds to the slope surface of the second slope end wall, the slope surface structure is arranged, so that the connecting area of the hot melt layer is large, and it is more conducive to improving the connecting strength.
[0029] Specifically, the hot melt layer is preferably made of the same material as the outer protective layer of the jacket pipe. In this embodiment, the hot melt layer is made of a high-density polyethylene material layer, which is the same material as the outer protective layer of the jacket pipe, and has good hot melt connection effect and high strength. The heat shrink layer is made of a radiation cross-linked polyethylene material layer, which has good physical and chemical properties and heat shrinkage performance.
[0030] In this embodiment, the inner wall of the hot melt layer on the inner side of the contraction section is provided with an electric heating wire. The electric heating wire is powered to heat the hot melt layer. The inner wall of the hot melt layer of the first connecting end and the second connecting end is provided with an electric heating wire. The electric heating wire is powered to heat the hot melt layer to hot melt, and the first connecting end and the second connecting end are hot melt connected.
[0031] In this embodiment, the outer side of the connecting part 5 is provided with a fixing sheet 6. The fixing sheet 6 can further strengthen the connection strength between the first connecting end and the second connecting end, and can further improve the connection sealing between the first connecting end and the second connecting end. The fixing sheet 6 can be connected to the outer side of the connecting part by hot melt, or can be connected to the outer side of the connecting part by coating hot melt glue on the side wall of the fixing sheet. The specific selection can be made according to the construction condition.
[0032] The jacket pipe heat shrink connection sleeve of this embodiment is connected to form a connection sleeve only when it is used on site. When transported, the connection sleeve pieces are stacked and stacked, which occupies a small space and is convenient for transportation. Compared with the existing jacket pipe heat shrink connection sleeve product transportation, the transportation cost is greatly reduced. When used on site, the first connecting end and the second connecting end of the connection sleeve piece are connected to form a connection sleeve, which is convenient for construction.
[0033] Embodiment 2
[0034] As shown in Figure 3 The jacket pipe connection structure provided in this embodiment includes two jacket pipes 9. Each jacket pipe 9 includes a steel pipe 10. The outer part of the steel pipe 10 is covered with a first heat preservation layer 11. The outer part of the first heat preservation layer 11 is covered with an outer protective layer 12. The length of the first heat preservation layer 11 and the outer protective layer 12 is less than the length of the steel pipe 10. The end parts of the two steel pipes 10 are sealed and welded to be connected.
[0035] The first heat preservation layers 11 of the two jacket pipes 9 are provided with a second heat preservation layer 13. The second heat preservation layer 13 is covered on the steel pipe 10. The second heat preservation layer 13 is provided with a jacket pipe heat shrink connection sleeve 2. The two contraction sections of the jacket pipe heat shrink connection sleeve 2 are respectively provided on the outer protective layers 12 of the two jacket pipes 9, and are sealed and connected with the outer protective layers 12.
[0036] In this embodiment, the hot melt layer of the contraction section is hot melt connected with the outer wall of the outer protective layer 12, and the same material is hot melt connected, which has good connection effect and high strength.
[0037] In the embodiment, the second thermal insulation layer 13 is a foamed material thermal insulation layer, and can specifically adopt the same or similar material as the first thermal insulation layer.
[0038] In specific use, the connecting sleeve pieces are stacked and loaded into a vehicle for transportation, and after arriving at the construction site, the first connecting end and the second connecting end of the connecting sleeve piece are hot melt connected to form a jacket pipe heat shrink connection sleeve, then the jacket pipe heat shrink connection sleeve 2 is sleeved on the jacket pipe 9, the connecting end portions of the two jacket pipes 9 are welded and connected, the jacket pipe heat shrink connection sleeve 2 is moved to the connecting position of the two jacket pipes 9, the two shrink sections of the jacket pipe heat shrink connection sleeve 2 are respectively overlapped with the end portions of the outer protective layers 12 of the two jacket pipes 9, the electric heating wires of the shrink sections are powered on, the outer protective layers 12 and the corresponding hot melt layers 7 are heated, then the heat shrink layers 8 of the two shrink sections of the jacket pipe heat shrink connection sleeve 2 are heated to heat shrink, the heating and heat shrink process of the jacket pipe heat shrink connection sleeve 2 is controlled, the hot melt layer is heated to become soft and hot melt, and then the heat shrink layer is completely heat shrunk, finally, the space between the jacket pipe heat shrink connection sleeve 2 and the steel pipe is filled with thermal insulation material to form the second thermal insulation layer 13, so that the two jacket pipes 9 are completely sealed and connected, the connection is firm, and the sealing effect is good.
[0039] The second thermal insulation layer can be filled with foamed material into the space after the holes are opened on the side wall of the jacket pipe heat shrink connection sleeve 2, and then the holes are blocked, of course, other ways can also be adopted; in the embodiment, the electric heating wire heating mode is adopted for the connection between the hot melt layer and the outer protective layer, of course, other ways can also be adopted, as long as the hot melt connection between the two is achieved.
[0040] The specific implementation manner of the utility model does not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.
Claims
1. A jacket pipe heat shrink coupling sleeve, both ends of the jacket pipe heat shrink coupling sleeve are respectively provided with a shrinkage section, characterized in that, The jacket pipe heat-shrinking connecting sleeve comprises a sleeve piece, which is provided with a first connecting end and a second connecting end in the circumferential direction, and the first connecting end and the second connecting end are connected to form a connecting part; The sleeve piece comprises a heat-shrinking layer, and the inner side of the heat-shrinking layer is provided with a hot-melt layer; the hot-melt layer of the first connecting end and the hot-melt layer of the second connecting end are hot-melt connected.
2. The heat-shrinkable sleeve for connecting a jacket pipe according to claim 1, wherein The first connecting end is provided with a first slope-shaped end wall, and the second connecting end is provided with a second slope-shaped end wall; the slope surface of the first slope-shaped end wall and the slope surface of the second slope-shaped end wall correspond to each other.
3. The heat-shrinkable sleeve of claim 1, wherein The hot-melt layer is a high-density polyethylene material layer, and the heat-shrinking layer is a radiation-crosslinked polyethylene material layer.
4. The heat-shrinkable sleeve of claim 1, wherein The inner wall of the hot-melt layer on the inner side of the contraction section is provided with an electric heating wire, and the inner wall of the hot-melt layer of the first connecting end and the second connecting end is provided with an electric heating wire.
5. The heat-shrinkable sleeve of claim 1, wherein The outer side of the connecting part is provided with a fixing piece.
6. A structure for connecting two jacket pipes, each of the two jacket pipes comprising a steel pipe, an outer portion of the steel pipe being covered with a first thermal insulation layer, an outer portion of the first thermal insulation layer being covered with an outer protective layer, the first thermal insulation layer and the outer protective layer each having a length that is shorter than a length of the steel pipe, characterized in that, The end portions of the two steel pipes are sealingly welded and connected; A second heat-insulating layer is arranged between the first heat-insulating layers of the two jacket pipes, the second heat-insulating layer is wrapped on the steel pipes, an outer jacket of the second heat-insulating layer is provided with the jacket pipe heat-shrinking connecting sleeve according to any one of claims 1 to 5, and the two contraction sections of the jacket pipe heat-shrinking connecting sleeve are respectively sleeved on the outer protective layers of the two jacket pipes and are sealingly connected with the outer protective layers.
7. The jacket pipe connection of claim 6, wherein The hot-melt layer of the contraction section is hot-melt connected with the outer wall of the outer protective layer.
8. The jacket pipe connection of claim 6, wherein The second heat-insulating layer is a foamed material heat-insulating layer.