CN213420154U - Waterproof device for inspection well of direct-buried heat supply pipeline - Google Patents
Waterproof device for inspection well of direct-buried heat supply pipeline Download PDFInfo
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- CN213420154U CN213420154U CN202022584097.9U CN202022584097U CN213420154U CN 213420154 U CN213420154 U CN 213420154U CN 202022584097 U CN202022584097 U CN 202022584097U CN 213420154 U CN213420154 U CN 213420154U
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- heat supply
- supply pipeline
- flexible joint
- waterproof
- inspection well
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Abstract
The utility model relates to a heat supply pipe network waterproof field especially relates to a direct burial heat supply pipeline inspection shaft watertight fittings, including pre-buried steel casing pipe in inspection shaft wall of a well concrete, steel casing pipe passes through flexible joint and heat supply pipeline is connected, flexible joint's one end and steel casing pipe adopt welding flange to be connected, and the other end is connected with fixed waterproof head. The waterproof device is novel in structure, reasonable in design, good in waterproof effect and high in practicability.
Description
Technical Field
The utility model relates to a heat supply pipe network waterproof field especially relates to a direct burial heat supply pipeline inspection shaft watertight fittings.
Background
In the heat supply pipe network construction, the direct burial heat supply pipeline is laid and is compared with traditional trench and lay and have the advantages of energy saving, reduction in manufacturing cost, reduction of construction period, land saving, long service life of pipeline and the like. With the rapid development of the heat supply industry in China, the laying of the prefabricated heat-preservation direct-buried pipeline gradually replaces the laying of an underground pipe trench. The requirement of the direct-buried heat supply pipeline on waterproof performance is high, and strict waterproof measures must be taken in inspection well chambers such as valves, compensators, drain valves, air release valves and the like in a pipe network to prevent underground water from permeating into the inspection well and damaging various valve pipe fittings and equipment.
In the construction of heat supply engineering at the present stage, the water prevention of the inspection well of the directly-buried heat supply pipeline is mainly realized by installing a flexible waterproof sleeve. The heat-insulating layer and the outer protective layer of the direct-buried heat supply pipeline are relatively soft and have certain plastic deformation under the influence of external force. Meanwhile, in the heat supply process, as the medium in the pipeline is high-temperature hot water, the pipeline is influenced by expansion with heat and contraction with cold along with the change of the temperature of the medium, frequent axial expansion and contraction are generated, meanwhile, the radial movement of the main pipe network is caused by the axial expansion and contraction of the branch pipe network, the service life of the flexible sleeve is also influenced by high temperature, and the tightness of the flexible sleeve is difficult to ensure by adopting a common waterproof processing method between the wall of the inspection well and the pipeline.
Disclosure of Invention
An object of the utility model is to overcome the problem that exists among the prior art, and provide a direct-burried heat supply pipeline inspection shaft watertight fittings, this watertight fittings novel structure, reasonable in design, water-proof effects is better, and the practicality is strong.
The technical scheme of the utility model is realized like this: the utility model provides a direct burial heat supply pipeline inspection shaft watertight fittings, includes the steel casing pipe of pre-buried in inspection shaft wall of a well concrete, the steel casing pipe passes through flexible joint and is connected with heat supply pipeline, flexible joint's one end and steel casing pipe adopt butt welding flange to be connected, and the other end is connected with fixed waterproof head.
Preferably, the outer sides of the flexible joint and the fixed waterproof seal head are provided with protective shells.
Preferably, one end of the protective shell is connected with the steel sleeve, a flexible joint mounting opening is formed in the joint of the protective shell and the steel sleeve, and the welding neck flange is arranged at the flexible joint mounting opening.
Preferably, one end of the fixed waterproof end socket is connected with the outer wall of the heat supply pipeline, and the other end of the fixed waterproof end socket is connected with the inner wall of the protective shell.
Preferably, the outer layer of the heat supply pipeline is provided with a heat insulation layer.
The utility model discloses following beneficial effect has: the utility model discloses a direct-burried heat supply pipeline inspection shaft watertight fittings, this watertight fittings simple structure, the modern design, the axial of direct-burried heat supply pipeline is flexible and is eliminated sheathed tube influence, and its length can be decided according to the axial flexible volume of direct-burried pipeline section, and this concertina movement that just makes heat supply pipeline only goes on in the steel casing pipe, does not have the displacement between the sleeve pipe and the inspection shaft wall of a well. Meanwhile, the flexible joint has flexibility, the influence of radial displacement of the main pipe on the sleeve caused by axial expansion and contraction of each branch pipe of the pipe network can be eliminated by the flexible joint, and the diameters of the steel sleeve and the flexible joint can be determined according to the radial displacement of the branch pipes and the flexibility of the flexible joint. Therefore, effective water prevention between the wall of the inspection well and the steel sleeve is realized, and no leakage is ensured. The waterproof treatment technology is simple in construction, and not only prevents underground water from permeating the wall of the inspection well, but also ensures free expansion of the pipe network.
Drawings
Fig. 1 is a schematic view of the waterproof device of the inspection well for directly-buried heat supply pipeline of the present invention.
In the figure: 1-steel sleeve, 2-flexible joint, 3-heat supply pipeline, 4-heat insulation layer, 5-welding flange, 6-fixed waterproof end socket, 7-protective shell and 8-inspection well wall.
Detailed Description
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b): the utility model provides a direct burial heat supply pipeline inspection shaft watertight fittings, as shown in figure 1, including pre-buried steel casing 1 in 8 concrete in the inspection shaft wall of a well, steel casing 1 and 8 concrete rigid connection in the inspection shaft wall of a well, steel casing 1 is connected with heat supply pipeline 3 through flexible joint 2, and heat supply pipeline 3's skin is provided with heat preservation 4. One end of the flexible joint 2 is connected with the steel sleeve 1 by adopting a welding flange 5, and the other end of the flexible joint is connected with a fixed waterproof seal head 6. The influence of the axial expansion of the directly-buried heat supply pipeline on the sleeve is eliminated by the flexible joint 2, the length of the flexible joint can be determined according to the axial expansion amount of the directly-buried pipeline section, so that the expansion movement of the heat supply pipeline 3 is only carried out in the steel sleeve 1, and no displacement exists between the sleeve and the wall 8 of the inspection well. Meanwhile, the flexible joint 2 has flexibility, the influence of radial displacement of the main pipe on the sleeve caused by axial expansion and contraction of each branch pipe of the pipe network can be eliminated by the flexible joint 2, and the diameters of the steel sleeve 1 and the flexible joint 2 can be determined according to the radial displacement of the branch pipes and the flexibility of the flexible joint 2. Therefore, effective water prevention between the well wall 8 of the inspection well and the steel sleeve 1 is realized, and no leakage is ensured. And protective shells 7 are arranged on the outer sides of the flexible joint 2 and the fixed waterproof end socket 6. Protective housing 7 plays the effect of protection flexible joint 2 and fixed waterproof head 6, and protective housing 7's one end is connected with steel casing pipe 1, and protective housing 7 and steel casing pipe 1 junction are provided with flexible joint 2 installing port, and welding neck flange 5 sets up in flexible joint 2 installing port department. One end of the fixed waterproof end socket 6 is connected with the outer wall of the heat supply pipeline 3, and the other end is connected with the inner wall of the protective shell 7. The waterproof treatment technology is simple in construction, and not only prevents underground water from permeating the wall 8 of the inspection well, but also ensures free expansion of a pipe network.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (5)
1. The utility model provides a buried heat supply pipeline inspection shaft watertight fittings which characterized in that: the inspection well comprises a steel sleeve embedded in the well wall concrete of the inspection well, wherein the steel sleeve is connected with a heat supply pipeline through a flexible joint, one end of the flexible joint is connected with the steel sleeve through a welding flange, and the other end of the flexible joint is connected with a fixed waterproof end socket.
2. The waterproof device for the inspection well of the directly-buried heat supply pipeline according to claim 1, wherein: and protective shells are arranged on the outer sides of the flexible joint and the fixed waterproof seal head.
3. The waterproof device for the inspection well of the directly-buried heat supply pipeline according to claim 2, wherein: one end of the protective shell is connected with the steel sleeve, a flexible joint mounting opening is formed in the joint of the protective shell and the steel sleeve, and the welding neck flange is arranged at the flexible joint mounting opening.
4. The waterproof device for the inspection well of the directly-buried heat supply pipeline according to claim 2, wherein: one end of the fixed waterproof end socket is connected with the outer wall of the heat supply pipeline, and the other end of the fixed waterproof end socket is connected with the inner wall of the protective shell.
5. The waterproof device for the inspection well of the directly-buried heat supply pipeline according to claim 1, wherein: and the outer layer of the heat supply pipeline is provided with a heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022584097.9U CN213420154U (en) | 2020-11-10 | 2020-11-10 | Waterproof device for inspection well of direct-buried heat supply pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022584097.9U CN213420154U (en) | 2020-11-10 | 2020-11-10 | Waterproof device for inspection well of direct-buried heat supply pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213420154U true CN213420154U (en) | 2021-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022584097.9U Active CN213420154U (en) | 2020-11-10 | 2020-11-10 | Waterproof device for inspection well of direct-buried heat supply pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213420154U (en) |
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2020
- 2020-11-10 CN CN202022584097.9U patent/CN213420154U/en active Active
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