CN112944055A - Large-diameter composite drainage pipeline - Google Patents
Large-diameter composite drainage pipeline Download PDFInfo
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- CN112944055A CN112944055A CN202110264155.6A CN202110264155A CN112944055A CN 112944055 A CN112944055 A CN 112944055A CN 202110264155 A CN202110264155 A CN 202110264155A CN 112944055 A CN112944055 A CN 112944055A
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- Prior art keywords
- layer
- pipeline
- water leakage
- wall
- main body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Abstract
The invention discloses a large-diameter composite drainage pipeline, and belongs to the technical field of pipelines. The pipe comprises an inner wall pipe layer, a flexible rigidity reinforcing layer, a main body pipe layer and an outer wall pipe layer which are sequentially bonded and coated from inside to outside, wherein the inner surface of the inner wall pipe layer is a continuous smooth solid wall; a hole path spirally wound along the axial direction of the pipeline main body is formed in the pipeline main body layer, a water leakage induction cable is installed in the hole path, and the water leakage induction cable is electrically connected with a water leakage controller outside the drainage pipeline; the outer wall pipeline layer comprises a high-density polyethylene base layer and a reinforcing steel strip spirally wound and compounded in the high-density polyethylene base layer. The invention enables the large-caliber drainage pipeline to have better rigidity, toughness and impact resistance through the plastic-steel composite structure with the rigidity and flexibility, overcomes the problems of the existing large-caliber pipeline, and realizes the effect of pre-alarming for water leakage of the pipeline by arranging the water leakage detection system.
Description
Technical Field
The invention relates to the technical field of pipelines, in particular to a large-caliber composite drainage pipeline.
Background
With the continuous development of the urbanization process, the requirement on an urban underground pipeline network system is higher and higher, particularly in living areas with concentrated residents, the discharge capacity requirement of underground drainage pipelines is higher and higher, and the requirement on the caliber of drainage pipelines is higher and higher. With the increase of the caliber design, the requirements on the strength, rigidity, impact resistance and the like of the pipeline are higher and higher. At present, drainage pipelines are generally composed of metal pipelines and plastic pipelines, wherein the metal pipelines have stronger performances in the aspects of strength, rigidity, impact resistance and the like, but have weaker soil corrosion resistance, toughness and the like, are heavy in weight, and are time-consuming and labor-consuming to transport and install; the plastic pipeline is generally a PE pipeline, which has good sanitation, corrosion resistance and easy transportation and installation, and is widely applied at present, but when a large-diameter pipeline is manufactured by using a PE material, the strength, rigidity, impact resistance and the like are poor, and rapid stress cracking phenomena such as pipe collapse, pipe explosion and the like are easy to occur. Meanwhile, the current water leakage detection of the drainage pipeline is mostly post-mounted detection and maintenance, namely, under the condition that serious water leakage occurs, a water leakage point is found out through manual drainage, and finally maintenance is carried out. Because large-diameter drainage pipe generally buries deeply underground, artifical leaking water point investigation work consuming time for a long time, inefficiency, be unfavorable for the rapid combat rapid solution of maintenance work, maintain again under the condition that has taken place seriously to leak simultaneously, also lead to the maintenance degree of difficulty to increase, the sewage that leaks out in the water pipe causes comparatively serious pollution to soil etc. is unfavorable for environmental protection. Therefore, if the pipeline water leakage can be pre-alarmed before serious water leakage occurs, the time and the energy of pipeline maintenance work can be greatly saved, and the larger hidden water leakage danger is avoided.
Disclosure of Invention
The invention provides a large-caliber composite drainage pipeline, which has the primary purpose that through reasonable structural design, the large-caliber drainage pipeline has better rigidity, toughness and impact resistance, and the problems of the existing large-caliber pipeline mentioned in the background art are solved; secondly, through setting up the detection system that leaks, realize the effect of pipeline leakage pre-warning.
The technical purpose of the invention is realized by the following technical scheme:
a large-caliber composite drainage pipeline comprises:
the inner surface of the inner wall pipeline layer is a continuous smooth solid wall;
the flexible rigidity reinforcing layer is bonded and coated on the outer side of the inner wall layer;
the main pipeline layer is bonded and coated on the outer side of the flexible rigidity reinforcing layer;
the outer wall pipeline layer is bonded and coated outside the pipeline main body layer;
wherein the content of the first and second substances,
a hole path spirally wound along the axial direction of the pipeline main body is formed in the pipeline main body layer, a water leakage induction cable is installed in the hole path, and the water leakage induction cable is electrically connected with a water leakage controller outside the drainage pipeline;
the outer wall pipeline layer comprises a high-density polyethylene base layer and a reinforcing steel strip spirally wound and compounded in the high-density polyethylene base layer.
Optionally, the inner wall pipeline layer and the main pipeline layer are both made of high-density polyethylene composite materials.
Optionally, the flexible stiffness reinforcing layer is a flexible pipe mesh-shaped steel wire framework formed by spirally winding high-strength steel wires left and right.
Optionally, the surface of the steel wire is plated with an anti-corrosion coating.
Optionally, a basalt fiber layer is further disposed between the main pipe layer and the outer wall pipe layer, and the basalt fiber layer is made of a basalt fiber composite material subjected to surface modification treatment by using nano-silica modified coating slurry.
Optionally, the reinforcing steel strip is an inverted U-shaped bent steel plate.
Optionally, the reinforcing steel strip is a solid steel bar.
Optionally, the spiral winding path of the reinforcing steel strip and the spiral winding path of the pore path are arranged at intervals on the vertical section of the pipeline.
Optionally, the water leakage sensing cable is a positioning type water leakage sensing cable.
Optionally, the system further comprises a remote monitoring control system, and the water leakage controller is in signal connection with the remote monitoring control system.
Compared with the prior art, the invention has the beneficial effects that:
1. the inner wall pipeline layer, the main body pipeline layer and the outer wall pipeline layer of the large-caliber drainage pipeline provided by the invention are all made of high-density polyethylene composite material layers, and meanwhile, a flexible rigidity reinforcing layer is compounded between the inner wall pipeline layer and the main body pipeline layer, and a reinforcing steel belt is compounded in the outer wall pipeline layer, so that a pipeline wall structure with the advantages of rigidity and flexibility is formed. The inner, middle and outer high-density polyethylene composite material layers fully utilize the performance characteristics of high-density polyethylene such as light weight, corrosion resistance and the like, and keep the advantages of the plastic pipeline; meanwhile, the flexible rigidity reinforcing layer is formed by spirally winding high-strength steel wires left and right to form a pipe-shaped steel wire framework, the steel wire framework effectively reinforces the strength and rigidity of the interior of the pipeline, and meanwhile, the pipe-shaped structural form of the flexible rigidity reinforcing layer enables the reinforcing layer to have certain elastic deformation in the transverse direction and the longitudinal direction, so that a 'flexible rigidity support' is formed, and the annular flexibility and the toughness of the pipeline can be enhanced; and the reinforced steel belt is further compounded in the outer wall pipeline layer, so that the outer wall of the pipeline forms an annular spiral corrugated structure, the annular rigidity and the impact resistance of the pipeline are greatly enhanced, multiple flexible rigidity from inside to outside is formed, and the pipeline has better rigidity, toughness and impact resistance.
2. According to the large-caliber drainage pipeline provided by the invention, the inner part of the pipeline main body layer is provided with the hole path spirally wound along the axial direction of the pipeline main body, the positioning type water leakage induction cable is arranged in the hole path, and the water leakage induction cable is electrically connected with the water leakage controller outside the drainage pipeline, so that a water leakage detection system is formed. When the pipeline crack appears, no matter be from outside or inside, when the crack reachs pipeline main part layer, when having rivers to enter into the hole way promptly, the response cable that leaks takes place the short circuit after touching water, leak the water controller and judge the condition of leaking and take place the concrete position of leaking according to the change of the resistance of the response cable that leaks, and send alarm signal, thereby realize pipeline leakage pre-alarm when the pipeline has not taken place thoroughly damaged yet, practice thrift the time and the energy of pipeline maintenance work, avoid bigger hidden danger that leaks to take place.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the external structure of the pipe of the present invention.
Fig. 2 is a perspective view of a partial structure of the pipe of the present invention.
Fig. 3 is an expanded schematic view of a portion of the pipe layer of fig. 2.
FIG. 4 is a schematic view of the inner wall pipe layer, the flexible stiffness enhancing layer and a portion of the main pipe layer according to the present invention.
FIG. 5 is a schematic plan sectional view of the duct wall of the duct of the present invention.
Fig. 6 is a schematic plan sectional view of the reinforced steel strip of the pipe of the present invention as a solid steel bar.
In the figure:
1. an inner wall pipe layer;
2. a flexible stiffness reinforcement layer;
3. a main pipe layer 31, a pore path;
4. an outer wall pipeline layer 41, a high-density polyethylene base layer 42 and a reinforced steel belt;
5. a water leakage induction cable;
6. and a basalt fiber layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the above description of the present invention, it is to be understood that the terms "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of description and simplification of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-5, the present embodiment discloses a large-caliber composite drainage pipeline, which includes an inner wall pipeline layer 1, a flexible stiffness enhancing layer 2, a main pipeline layer 3 and an outer wall pipeline layer 4, wherein the inner wall pipeline layer 1 is made of a high density polyethylene composite material, and has a continuous smooth solid wall on the inner surface, so that scaling is not easily generated during drainage, and the resistance to fluid delivery is small; the flexible rigidity reinforcing layer 2 is bonded and coated on the outer side of the inner wall layer 1 through bonding resin, and the design of the flexible rigidity reinforcing layer 2 can realize the rigidity enhancement of a pipeline ring from the inside of the pipeline; the main pipeline layer 3 is made of a high-density polyethylene composite material and is bonded and coated on the outer side of the flexible rigidity reinforcing layer 2 through bonding resin; the outer-wall pipeline layer 4 is bonded and coated outside the pipeline main body layer 3 through bonding resin; in this embodiment, the bonding resin is a high-density polyethylene modified material, and can be completely fused with the high-density polyethylene under heating conditions, and meanwhile, the polar bond of the bonding resin has a very strong bonding property with steel, so that a good composite effect can be formed between the high-density polyethylene and the steel, and the pipeline wall is ensured to have no interlayer peeling hidden trouble.
In this embodiment, a water leakage detection system is further provided to achieve the effect of pre-alarming for water leakage of the pipeline, specifically, a hole 31 spirally wound along the axial direction of the pipeline main body is formed in the pipeline main body layer 3, a positioning type water leakage sensing cable 5 is installed in the hole 31, and the water leakage sensing cable 5 is electrically connected to a water leakage controller (not shown in the figure) outside the drainage pipeline; when the pipeline crack appears, no matter be from outside or inside, when the crack reachs pipeline main part layer 3, when having rivers to enter into hole way 31 promptly, leak water response cable 5 and touch and take place the short circuit after the water, leak the water controller and judge the condition of leaking and take place the concrete position of leaking according to the change of the resistance of the response cable 5 that leaks, and send alarm signal, thereby realize pipeline leak water preliminary alarm when the pipeline has not taken place thoroughly damaged yet, practice thrift the time and the energy of pipeline maintenance work, avoid bigger hidden danger that leaks to take place. The hole path 31 is designed along the axial spiral winding of the pipeline main body, namely, the water leakage sensing cable 5 is also wound and routed along the axial spiral winding of the pipeline main body, so that the water leakage detection surface of the pipeline can be uniformly and comprehensively circumferentially covered, and the timely detection of a water leakage point is ensured to a greater extent.
Preferably, in this embodiment, the system further includes a remote monitoring control system (not shown in the figure), and the water leakage controller is in signal connection with the remote monitoring control system to implement remote control of water leakage monitoring and positioning.
In this embodiment, a reinforcing steel strip 42 is further disposed in the outer-wall pipe layer 4, so as to further enhance the ring stiffness of the pipe from the position of the pipe close to the outer layer, thereby forming an inner-outer dual stiffness reinforcement with the flexible stiffness reinforcement layer 2; specifically, the base layer of the outer-wall pipeline layer 4 is a high-density polyethylene base layer 41, and the reinforcing steel strip 42 is spirally wound and compounded in the high-density polyethylene base layer 41, so that the outer wall of the pipeline forms an annular spiral corrugated structure, and the annular rigidity and the impact resistance of the pipeline are enhanced.
Preferably, in this embodiment, the flexible stiffness reinforcement layer 2 is a flexible pipe mesh-shaped steel wire framework formed by spirally winding high-strength steel wires left and right, the steel wire framework effectively reinforces the strength and rigidity of the interior of the pipeline, and the pipe mesh-shaped structural form of the steel wire framework enables the reinforcement layer to have a certain elastic deformation amount in the transverse direction and the longitudinal direction, i.e. a "flexible stiffness support" is formed, so that the annular flexibility and the toughness of the pipeline can be enhanced; the steel wire surface is plated with an anticorrosive coating, so that the anticorrosive performance of the steel wire is enhanced, and the steel wire framework is prevented from being soaked and corroded by sewage in the pipeline after the pipeline layer on the inner wall of the pipeline is broken.
Preferably, in this embodiment, a basalt fiber layer 6 is further disposed between the main pipe layer 3 and the outer-wall pipe layer 4, and the basalt fiber layer 6 is made of a basalt fiber composite material subjected to surface modification treatment with nano-silica modified coating slurry. The basalt fiber layer 6 can enhance the tensile resistance of the pipeline, and the surface roughness of the basalt fiber subjected to surface modification treatment by the nano-silica modified coating slurry is increased, so that the adhesion of the fiber and matrix resin is facilitated, and the composite effect between the basalt fiber layer and the main pipeline layer and between the basalt fiber layer and the outer wall pipeline layer is improved.
Preferably, in this embodiment, the reinforcing steel strip 42 is an inverted U-shaped bent steel plate, as shown in fig. 5; in other embodiments, the reinforcing steel strips 42 may also be solid steel bars, as shown in FIG. 6.
Preferably, in this embodiment, the spiral winding path of the reinforcing steel strip 42 and the spiral winding path of the hole 31 are spaced apart from each other on the vertical cross section of the pipeline, which is advantageous for avoiding cutting the reinforcing steel strip outside the pipeline to some extent when a maintenance worker confirms the water leakage position or maintains the water leakage position after the water leakage detection system issues a water leakage alarm.
It should be noted that, in the present invention, the spiral winding density of the reinforcing steel strip 42 and the hole 31, the thickness of the reinforcing steel strip 42, the diameter of the steel wire, the thickness of each structural layer, and the like can be set according to the pipe requirements of different pressure grades, and the present invention is not particularly limited; meanwhile, the electrical devices such as the water leakage sensing cable 5 and the water leakage controller in the present invention have corresponding power devices for supplying electrical energy, the connection mode and the electrical energy supply mode of the power devices are well known in the art, the electrical relationship related to each structure, including the connection mode and the working principle between the water leakage sensing cable and the water leakage controller, is also common knowledge in the art, and the present invention is not particularly limited and explained.
The technical solutions of the present invention, which are not specifically limited, are all technical solutions that can achieve corresponding effects by a conventional method for those skilled in the art, and are well known to those skilled in the art.
The foregoing is directed to only certain exemplary embodiments of this invention and, accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive. It should also be noted that those skilled in the art can make various improvements and additions without departing from the principle of the present invention, and these improvements and additions should also be considered as the protection scope of the present invention.
Claims (10)
1. A large-caliber composite drainage pipeline is characterized by comprising:
the inner surface of the inner wall pipeline layer is a continuous smooth solid wall;
the flexible rigidity reinforcing layer is bonded and coated on the outer side of the inner wall layer;
the main pipeline layer is bonded and coated on the outer side of the flexible rigidity reinforcing layer;
the outer wall pipeline layer is bonded and coated outside the pipeline main body layer;
wherein the content of the first and second substances,
a hole path spirally wound along the axial direction of the pipeline main body is formed in the pipeline main body layer, a water leakage induction cable is installed in the hole path, and the water leakage induction cable is electrically connected with a water leakage controller outside the drainage pipeline;
the outer wall pipeline layer comprises a high-density polyethylene base layer and a reinforcing steel strip spirally wound and compounded in the high-density polyethylene base layer.
2. The heavy caliber composite drain pipe of claim 1, wherein the inner wall pipe layer and the main body pipe layer are made of high density polyethylene composite material.
3. The large-caliber composite drainage pipeline according to claim 1, wherein the flexible stiffness reinforcing layer is a flexible pipe mesh steel wire framework formed by spirally winding high-strength steel wires left and right.
4. The heavy caliber composite drain pipe of claim 3, wherein the steel wire is coated with an anti-corrosion coating.
5. The large-caliber composite drainage pipeline according to claim 1, wherein a basalt fiber layer is further arranged between the main body pipeline layer and the outer wall pipeline layer, and the basalt fiber layer is made of a basalt fiber composite material subjected to surface modification treatment by using nano-silica modified coating slurry.
6. The heavy caliber composite drain pipe of claim 5, wherein the reinforcing steel strip is an inverted U-shaped bent steel plate.
7. The heavy caliber composite drain pipe of claim 5, wherein the reinforcing steel strip is a solid steel bar.
8. The heavy caliber composite drain pipe of claim 1, wherein the spiral winding path of the reinforcing steel strip and the spiral winding path of the hole are spaced apart in a vertical cross section of the pipe.
9. The large-caliber composite drainage pipeline according to claim 1, wherein the water leakage sensing cable is a positioning type water leakage sensing cable.
10. The heavy caliber composite drain pipe of claim 1, further comprising a remote monitoring control system, wherein the drain controller is in signal connection with the remote monitoring control system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264155.6A CN112944055A (en) | 2021-03-11 | 2021-03-11 | Large-diameter composite drainage pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110264155.6A CN112944055A (en) | 2021-03-11 | 2021-03-11 | Large-diameter composite drainage pipeline |
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| CN112944055A true CN112944055A (en) | 2021-06-11 |
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| CN202110264155.6A Pending CN112944055A (en) | 2021-03-11 | 2021-03-11 | Large-diameter composite drainage pipeline |
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Application publication date: 20210611 |
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