Basalt fiber underground water delivery intelligent sensing pipeline for desert area

Abstract

The invention discloses a basalt fiber underground water delivery intelligent sensing pipeline for a desert area, and belongs to the technical field of pipeline systems. Comprising a pipeline body, an intelligent sensing module and a prefabricated asymmetric connecting structure. The pipeline body is sequentially provided with a lining layer, a gradient functional enhancement layer, an outer wrapping layer and an enhancement protection layer from inside to outside in the radial direction. The intelligent sensing module comprises a hemispherical protruding layer arranged on a lining layer, an outer wrapping layer and a wireless transmission sensor. The asymmetric connecting structure comprises a concave connecting disc at the head of the pipeline, a convex connecting disc at the tail of the pipeline and a fastening disc buckle. The basalt fiber (BF) water conveying pipeline can effectively resist the desert corrosion environment, deformation and damage caused by radial bearing, axial stretching and pipeline bending are effectively prevented, the water body environment of the pipeline is intelligently sensed and monitored, and usability and durability are improved.

Description

Technical Field

[0001] This application belongs to the field of pipeline system technology, specifically relating to a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas. Background Technology

[0002] In water conveyance projects in desert areas, existing water pipeline systems mostly use metal materials for the main body, with anti-corrosion coatings applied to the surface to cope with the corrosive environment. However, the design of this type of pipeline focuses on optimizing cross-sectional characteristics, lacking modular manufacturing and dedicated connection methods designed for the desert environment. Furthermore, it faces multiple technical defects caused by the extreme environment, resulting in insufficient durability. Specific problems are as follows: Corrosion protection fails quickly: The continuous mechanical wear from desert winds and sand can easily damage the anti-corrosion coating on the pipeline surface, exposing the metal body to a corrosive environment and accelerating rusting; Weak resistance to deformation: The large temperature difference between day and night in the desert, coupled with the dynamic water pressure of long-distance high-pressure water transportation, makes the pipeline prone to radial expansion, axial expansion and contraction and cracking; at the same time, wind and sand cause uneven settlement of the foundation, causing the pipeline to bend and deform. Poor construction adaptability: There is no modular manufacturing process to support it, the amount of wet work on site is large, and there is a lack of reliable connection methods specifically for desert environments, resulting in low construction efficiency and insufficient strength of connection parts; Insufficient intelligent monitoring function: It cannot simultaneously monitor water pressure, flow rate, water quality and structural damage in real time, relies on manual periodic inspections, makes it difficult to achieve early warning of potential hazards, and leads to untimely and inaccurate maintenance.

[0003] Therefore, there is an urgent need to develop a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas to solve the above problems. Summary of the Invention

[0004] This application provides a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas, which has the advantages of improving the pipeline's corrosion resistance and wear resistance, effectively resisting dynamic water pressure and local deformation, realizing the integration of structural connection parts and intelligent monitoring interface, facilitating rapid assembly and maintenance, and reducing water consumption.

[0005] This application provides a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas, the technical solution of which includes the pipeline body, intelligent sensing module and prefabricated asymmetric connection structure; The main body of the pipeline is arranged radially from the inside to the outside as follows: an inner lining layer, a gradient functionalized reinforcement layer, an outer cladding layer, and a reinforcing protective layer. The inner lining layer is made of polymer materials and basalt fibers, with the fibers evenly distributed along the axial direction. The gradient functionalized reinforcement layer is a multi-layer basalt fiber woven mesh, with the fiber volume fraction varying radially to resist local deformation caused by dynamic water pressure. The outer cladding layer is made of polymer materials and basalt fibers, evenly arranged axially on the outside of the gradient functionalized reinforcement layer. Short basalt fiber filaments are arranged radially on the surface in contact with the reinforcing protective layer. These short basalt fiber filaments are shaped by hot resin impregnation and connected to the reinforcing protective layer to form a whole. The reinforcing protective layer is a basalt fiber reinforced cement-based intelligent concrete structure, including a basalt fiber reinforcing cage and reinforced cement-based concrete poured outside the cage. The basalt fiber reinforcing cage consists of longitudinal bars and stirrups. The reinforced cement-based concrete contains polymer water-absorbing resin microcapsules and microbial repair capsules, with the two types of capsules distributed according to the principle of functional gradient. The intelligent sensing module includes a hemispherical protrusion layer set in the inner lining, an outer cladding layer made of piezoelectric material, and a wireless transmission sensor installed at the pipe head. The hemispherical protrusion layer is used to generate local turbulent vibration. The vibration is transmitted to the piezoelectric material outer cladding layer through the gradient functionalized reinforcement layer to be converted into electrical energy to power the sensor. An opening is made at the connection position of the pipe head for the installation of the wireless transmission sensor, realizing the integration of the structural connection part and the intelligent monitoring interface. The asymmetric connection structure includes a concave connecting plate at the pipe head, a convex connecting plate at the pipe tail, and a fastening disc. The concave connecting plate has a hemispherical protrusion on its inner side, and the convex connecting plate has a hemispherical groove on its inner side that matches the hemispherical protrusion. Both the concave and convex connecting plates adopt a gear-shaped hollow design. The fastening disc has a gear-shaped structure and matches the two connecting plates. The connection area is locked by rotating the fastening disc. A vibration damping layer is provided on the inner side of the pipe tail.

[0006] Furthermore, the superabsorbent polymer microcapsules are based on sodium acrylate, and the microbial repair capsules have a double-layer core structure. The inner layer is a porous carrier particle that adsorbs Bacillus pasteurellii, and the outer layer encapsulates a nutrient source, which includes at least one of calcium lactate, yeast extract, and nitrate.

[0007] Furthermore, the functional gradation principle distribution is specifically as follows: The outer 20mm area of ​​the reinforced protective layer and the pipe connection area are the high-density area of ​​the microbial repair capsules, with a volume fraction of 3.0%-3.5%. The high-absorbent polymer microcapsules are the medium-density area, with a volume fraction of 1.0%. The interfacial reinforcement layer between basalt fiber reinforcement and reinforced cement-based concrete is a double-capsule high-density zone, with both types of capsules having a volume fraction of 2.5%-3.0%. In the cement-based concrete reinforcement works at other locations of the pipeline body, the total integral of the two types of capsules is 1.5% and they are evenly distributed.

[0008] Furthermore, the fastening disc is made of basalt fiber, and its axial limiting plate is provided with stiffening ribs.

[0009] Furthermore, the longitudinal bars of the basalt fiber reinforced cage are pre-bent in the connection area, and the bent longitudinal bars and circumferential stirrups form a spatial anchorage skeleton. The reinforced cement-based concrete is cast in one go to form an integral reinforced node with the skeleton.

[0010] Furthermore, the wireless transmission sensor is used to monitor water pressure, flow rate, and water quality parameters in the pipeline in real time.

[0011] Furthermore, both the concave and convex connecting discs are integrally cast at the connection point using reinforced cement-based concrete reinforcing protective layers, and are continuously connected to the reinforcing protective layer of the main pipe body.

[0012] The beneficial effects of this application are: 1. This application provides a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas. The pipeline body adopts a gradient functionalized reinforcement layer to resist deformation under dynamic water pressure, the intelligent sensing module realizes self-powered monitoring, and the asymmetric connection structure supports rapid assembly. It solves the problems of corrosion, wear, temperature fluctuation and low construction efficiency in desert environments. It has the advantages of improving the corrosion resistance and wear resistance of the pipeline, effectively resisting dynamic water pressure and local deformation, realizing the integration of structural connection parts and intelligent monitoring interface, facilitating rapid assembly and maintenance, and reducing water consumption. Attached Figure Description

[0013] For ease of explanation, this application is described in detail below with reference to specific embodiments and accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the transverse cross-sectional structure of the main body of the pipeline in this application; Figure 2 This is a longitudinal structural cross-sectional view of this application; Figure 3 This is a schematic diagram of the asymmetric connection structure of this application; Figure 4 This is a structural schematic diagram of the fastening disc buckle of this application.

[0015] In the diagram: 1. Inner lining layer; 2. Gradient functionalized reinforcement layer; 31. Outer cladding layer; 32. Short basalt fiber filaments; 4. Reinforcing protective layer; 41. Longitudinal reinforcement; 42. Stirrups; 43. Reinforced cement-based concrete; 5. Concave connecting disc; 51. Outer cladding layer; 52. Wireless transmission sensor; 53. Hemispherical protrusion; 54. Hemispherical protrusion layer; 6. Convex connecting disc; 61. Vibration damping layer; 62. Hemispherical groove; 7. Fastening disc; 71. Axial limiting plate; 72. Stiffening rib. Detailed Implementation

[0016] The following are specific embodiments of this application, described in conjunction with the accompanying drawings, to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0018] like Figure 1-4 The embodiment shown is a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas, including the pipeline body, intelligent sensing module and prefabricated asymmetric connection structure; The pipeline body is radially arranged from the inside to the outside as follows: an inner lining layer 1, a gradient functionalized reinforcement layer 2, an outer cladding layer 31, and a reinforcing protective layer 4. The inner lining layer 1 is made of polymer materials and basalt fibers, with the fibers uniformly distributed along the axial direction. The gradient functionalized reinforcement layer 2 is a multi-layer basalt fiber woven mesh, with the fiber volume fraction varying radially to resist local deformation caused by hydrodynamic pressure. The outer cladding layer 31 is made of polymer materials and basalt fibers, uniformly arranged along the axial direction on the outside of the gradient functionalized reinforcement layer 2, and its surface in contact with the reinforcing protective layer 4... Short basalt fiber filaments 32 are arranged radially. The short basalt fiber filaments 32 are shaped by hot resin impregnation and connected to the reinforcing protective layer 4 to form an integral whole. The reinforcing protective layer 4 is a basalt fiber reinforced engineering cement-based intelligent concrete structure, including a basalt fiber cage and reinforced engineering cement-based concrete (ECC) 43 poured outside the cage. The basalt fiber cage is composed of longitudinal bars 41 and stirrups 42. The reinforced engineering cement-based concrete 43 contains superabsorbent polymer microcapsules and microbial repair capsules. The two types of capsules are distributed according to the principle of functional gradient. The intelligent sensing module includes a hemispherical protrusion layer 54 disposed in the inner lining layer 1, an outer cladding layer 51 made of piezoelectric material, and a wireless transmission sensor 52 installed at the pipe head. The hemispherical protrusion layer 54 is used to generate local turbulent vibration. The vibration is transmitted to the piezoelectric material outer cladding layer 51 through the gradient functionalized enhancement layer 2 to be converted into electrical energy to power the sensor. An opening is made at the pipe head connection position for the installation of the wireless transmission sensor 52, realizing the integration of the structural connection part and the intelligent monitoring interface. The asymmetric connection structure includes a concave connecting plate 5 at the head of the pipe, a convex connecting plate 6 at the tail of the pipe, and a fastening disc 7. The concave connecting plate 5 has a hemispherical protrusion 53 on its inner side, and the convex connecting plate 6 has a hemispherical groove 62 that matches the hemispherical protrusion 53 on its inner side. Both the concave connecting plate 5 and the convex connecting plate 6 adopt a gear-shaped hollow design. The fastening disc 7 has a gear-shaped structure and matches the two connecting plates. The connection area is locked by rotating the fastening disc 7. A vibration damping layer 61 is provided on the inner side of the tail of the pipe.

[0019] Specifically, this embodiment provides a basalt fiber underground water conveyance intelligent sensing pipeline for desert areas. The overall structure of the pipeline is designed to include a pipeline body, an intelligent sensing module, and a prefabricated asymmetric connection structure. The pipeline body constitutes the core part for conveying the medium, the intelligent sensing module is integrated to realize real-time monitoring of the pipeline's operating status, and the asymmetric connection structure is used to achieve efficient and reliable connection between pipeline segments.

[0020] Specifically, the main body of the pipeline is radially arranged from the inside to the outside as follows: an inner lining layer 1, a gradient functionalized reinforcing layer 2, an outer cladding layer 31, and a reinforcing protective layer 4. This multi-layered composite structure aims to provide comprehensive protection and support for the pipeline. The inner lining layer 1, forming the innermost layer of the pipeline, is made of a composite of polymer materials and basalt fibers, with the fibers evenly distributed along the axial direction. This inner lining layer 1 is mainly used to provide a smooth inner wall, reduce water flow resistance, and isolate and protect the media inside the pipeline.

[0021] A gradient functionalized reinforcement layer 2 is disposed on the outer side of the inner lining layer 1, and is configured as a multi-layer basalt fiber woven mesh. The fiber volume fraction of this woven mesh varies radially in a gradient manner, that is, the density or content of the fibers gradually changes from the inside to the outside or from the outside to the inside. This gradient design is used to optimize the stress distribution between layers, thereby effectively resisting local deformation caused by hydrodynamic pressure and enhancing the overall pressure resistance of the pipeline.

[0022] The outer cladding layer 31 is made of a composite of polymer material and basalt fiber, and it is uniformly arranged along the axial direction on the outside of the gradient functionalized reinforcement layer 2. This outer cladding layer 31 is used to further enhance the structural strength and toughness of the pipeline, and serves as a transition layer between the gradient functionalized reinforcement layer 2 and the outermost reinforcing protective layer 4.

[0023] To achieve a strong connection between the outer cladding layer 31 and the reinforcing protective layer 4, short basalt fiber filaments 32 are radially arranged on the surfaces of the outer cladding layer 31 and the reinforcing protective layer 4 that are in contact with each other. These short basalt fiber filaments 32 are impregnated and shaped with hot resin during the bonding process, and then connected with the reinforcing protective layer 4 to form an integral structure, ensuring tight interlayer bonding and synergistic working ability.

[0024] The reinforcing protective layer 4 forms the outermost layer of the pipeline and is constructed using a basalt fiber-reinforced engineered cement-based smart concrete structure. This structure includes a basalt fiber cage and reinforced engineered cement-based concrete poured outside the cage. The basalt fiber cage forms the pipeline's skeleton, consisting of longitudinal bars 41 and stirrups 42. The longitudinal bars 41 extend along the pipeline's axial direction, while the stirrups 42 are arranged around the longitudinal bars 41, together forming a stable load-bearing frame.

[0025] The reinforced cement-based concrete cast outside the basalt fiber-reinforced cage incorporates superabsorbent polymer (SAP) microcapsules and microbial repair capsules. These capsules are designed to release internal substances to achieve self-healing when microcracks occur in the pipe. The distribution of the two types of capsules is designed according to a functional gradient principle; for example, the density of capsules is higher in some areas and relatively lower in others, to accommodate the repair needs of different locations.

[0026] A smart sensing module is integrated into the pipeline structure to enable real-time monitoring of the pipeline's status. This module includes a hemispherical protrusion layer 54 disposed within the inner lining layer 1. This hemispherical protrusion layer 54 is designed to generate localized turbulent vibrations as water flows through it. These vibrations serve as an initial source for energy harvesting.

[0027] The vibration is transmitted via the gradient functionalized reinforcement layer 2 to the outer cladding layer 51 made of piezoelectric material. This piezoelectric material cladding layer 51 can convert the received mechanical vibration into electrical energy. The generated electrical energy is used to power the sensors in the intelligent sensing module, thereby achieving energy self-sufficiency.

[0028] A wireless transmission sensor 52 is installed at the pipe head. This sensor is used to monitor water pressure, flow rate, and water quality parameters within the pipe in real time. To facilitate sensor installation, a hole is provided at the connection point at the pipe head. This design integrates the structural connection with the intelligent monitoring interface, simplifying the installation process and ensuring a tight fit between the sensor and the pipe structure.

[0029] An asymmetrical connection structure is used to connect adjacent pipe segments. It includes a concave connecting disc 5 at the pipe head, a convex connecting disc 6 at the pipe tail, and a fastening disc 7. The concave connecting disc 5 is located at one end of the pipe, while the convex connecting disc 6 is located at the other end, and the two are connected by the fastening disc 7.

[0030] The inner side of the concave connecting plate 5 is provided with a hemispherical protrusion 53, while the inner side of the convex connecting plate 6 is provided with a hemispherical groove 62 that matches the hemispherical protrusion 53. When the two connecting plates are mated, the hemispherical protrusion 53 and the hemispherical groove 62 cooperate with each other to achieve initial positioning and alignment of the connection, and provide a certain degree of shear resistance.

[0031] Both the concave connecting disc 5 and the convex connecting disc 6 adopt a gear-shaped hollow design. The fastening disc 7 is configured as a gear and is adapted to the gear-shaped hollow design of the two connecting discs. By rotating the fastening disc 7, its gear structure meshes with the gear structure of the connecting disc, thereby locking the connection area and ensuring a firm connection and stable operation.

[0032] A vibration damping layer 61 is provided on the inner side of the tail end of the pipeline. This vibration damping layer 61 is used to absorb and attenuate the vibration that may be generated during pipeline operation, thereby reducing the impact of vibration on the connection structure and the pipeline as a whole, and improving the stability and durability of pipeline operation.

[0033] This embodiment of the basalt fiber underground water conveyance intelligent sensing pipeline, through the use of basalt fiber composite materials and a multi-layered structural design, effectively enhances the pipeline's corrosion resistance and deformation resistance in desert environments. The integrated intelligent sensing module enables real-time monitoring with self-sufficient energy, compensating for the lack of intelligent early warning in traditional pipelines. Furthermore, the prefabricated, asymmetrical connection structure simplifies on-site construction, improves connection strength and efficiency, thereby enhancing the pipeline's durability, reliability, and intelligence in desert water conveyance projects.

[0034] Specifically, the superabsorbent polymer (SAP) microcapsules use sodium acrylate as the core, which has extremely high water absorption rate and excellent water retention. The SAP ensures the slow or on-demand release of water even under the large temperature difference in the desert. In addition, the introduction of SAP microcapsules enables the maintenance function and subsequent repair function to be linked in time and space, providing the necessary water activation conditions for microbial repair. The biorepair capsule uses a double-layer core to ensure the long-term stability of the repair agent. The inner layer is a porous carrier particle that adsorbs Bacillus pasteurellii, and the outer layer encapsulates the nutrient source (calcium lactate, yeast extract, nitrate, etc.).

[0035] The functional gradation principle distribution is specifically as follows: The outer 20mm area of ​​the reinforced protective layer 4 and the pipe connection area are the high-density area of ​​the microbial repair capsules, with a volume fraction of 3.0%-3.5%. The high-absorbent polymer microcapsules are the medium-density area, with a volume fraction of 1.0%. The interfacial reinforcement layer between basalt fiber reinforcement and reinforced cement-based concrete is a double-capsule high-density zone, with both types of capsules having a volume fraction of 2.5%-3.0%. In the cement-based concrete 43 used for reinforcement in other parts of the pipeline body, the total integral of the two types of capsules was 1.5% and they were evenly distributed.

[0036] Specifically, within a 20mm radius on the outer side of the reinforced protective layer 4, which is susceptible to external environmental influences and stress concentration, and at pipe connection points, high-density microbial repair capsules can rapidly respond to and repair initial microcracks, effectively preventing crack propagation and leakage. Meanwhile, medium-density superabsorbent polymer (SAP) microcapsules assist in water absorption, creating favorable conditions for repair. At the interface reinforcement layer between basalt fiber reinforcement and reinforced cement-based concrete, the synergistic effect of the dual high-density capsules significantly improves the interface's density, impermeability, and self-healing ability, effectively preventing interface debonding. Simultaneously, in other locations along the pipe body, evenly distributed capsules provide basic and widespread self-healing and water absorption functions, ensuring the overall toughness and durability of the pipeline. This optimized distribution significantly improves the pipeline's self-healing efficiency and long-term service performance, effectively extending its service life and reducing maintenance costs, making it particularly suitable for the complex and harsh environments of desert regions.

[0037] In other preferred embodiments, the fastening disc 7 is made of basalt fiber, and its axial limiting plate 71 is provided with stiffening ribs 72.

[0038] Specifically, the fastening disc 7 is manufactured using basalt fiber, significantly improving its overall mechanical strength, rigidity, and corrosion resistance. In the harsh environment of desert regions, the fastening disc 7 can effectively resist stress caused by external impacts, temperature changes, and water pressure, reducing material aging and fatigue damage, thereby ensuring that the fastening disc 7 maintains stable connection performance over the long term. Furthermore, stiffening ribs 72 are provided at the axial limiting plate 71, specifically enhancing the local rigidity and load-bearing capacity of the fastening disc 7 in key stress areas. This effectively prevents local deformation or buckling of the axial limiting plate 71 during locking or under stress, further improving the tightness and reliability of the connection and preventing loosening or detachment due to local failure.

[0039] In other preferred embodiments, the longitudinal bars 41 of the basalt fiber reinforced cage are pre-bent in the connection area, and the bent longitudinal bars 41 and the circumferential stirrups 42 form a spatial anchorage skeleton. The reinforced cement-based concrete is formed by a one-time casting process to form an integral reinforced node with the skeleton.

[0040] Specifically, after pre-bending in the connection area, the longitudinal reinforcement 41 of the basalt fiber reinforced cage forms a more stable spatial anchorage skeleton with three-dimensional constraint capabilities together with the circumferential stirrups 42. This skeleton structure effectively disperses and transfers the complex stresses borne by the connection area, significantly enhancing the shear, tensile, and bending resistance of this part, and avoiding the stress concentration problem that may occur at the connection point in traditional straight reinforcement cages. At the same time, the reinforced cement-based concrete is tightly integrated with the spatial anchorage skeleton using a one-time casting process, ensuring the material continuity and structural integrity of the connection area and eliminating potential weak points and interface defects.

[0041] In other preferred embodiments, both the concave connecting disc 5 and the convex connecting disc 6 are integrally cast from reinforced cement-based concrete reinforcing protective layers at the connection point, and are continuously connected to the reinforcing protective layer 4 of the main pipe body.

[0042] Specifically, the concave connecting plate 5 and the convex connecting plate 6 are integrally cast and continuously connected with the reinforcing protective layer 4 of the pipeline body, significantly enhancing the integrity and structural strength of the pipeline connection area. This integrated design effectively avoids problems such as leakage, cracking, or structural damage caused by discontinuous connection interfaces or insufficient connection strength, thereby greatly improving the long-term stability and durability of the pipeline in the harsh desert environment. The integrated casting process simplifies the on-site construction process, reduces installation difficulty and potential quality risks, and also reduces the need for subsequent maintenance. In addition, since the connection area forms a continuous whole with the pipeline body, the entire pipeline system can better resist the stress caused by internal water pressure and external environment (such as geological subsidence and temperature differences), ensuring the reliable operation of the water transmission pipeline and providing a solid structural foundation for the long-term stable operation of the intelligent sensing module, thereby ensuring the accuracy and continuity of monitoring water pressure, flow velocity, and water quality parameters within the pipeline.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] Those skilled in the art to which this application pertains may make various modifications or additions to the specific embodiments described, or adopt similar methods to replace them, without departing from the spirit of this application or exceeding the scope defined by the appended claims.

Claims

1. A basalt fiber underground water conveyance intelligent sensing pipeline for desert areas, characterized in that, This includes the main pipeline body, intelligent sensing module, and prefabricated asymmetric connection structure. The main body of the pipe is provided with an inner lining (1), a gradient functionalized reinforcement layer (2), an outer cladding layer (31), and a reinforcing protective layer (4) in the radial direction from the inside to the outside. The inner lining layer (1) is made of polymer material and basalt fiber, with the fibers evenly distributed along the axial direction. The gradient functionalized reinforcement layer (2) is a multi-layer basalt fiber woven mesh with the fiber volume fraction varying in a gradient along the radial direction to resist local deformation caused by hydrodynamic pressure. The outer cladding layer (31) is made of polymer material and basalt fiber and is evenly arranged along the axial direction on the outside of the gradient functionalized reinforcement layer (2), and it is in contact with the reinforcing protective layer (4). Short basalt fiber filaments (32) are arranged radially on the surface. The short basalt fiber filaments (32) are shaped by hot resin impregnation and connected to the reinforcing protective layer (4) to form an integral whole. The reinforcing protective layer (4) is a basalt fiber reinforced engineering cement-based intelligent concrete structure, including a basalt fiber cage and reinforced engineering cement-based concrete (43) poured outside the cage. The basalt fiber cage is composed of longitudinal bars (41) and stirrups (42). The reinforced engineering cement-based concrete (43) contains superabsorbent polymer microcapsules and microbial repair capsules. The two types of capsules are distributed according to the principle of functional gradient. The intelligent sensing module includes a hemispherical protrusion layer (54) set in the inner lining layer (1), an outer cladding layer (51) made of piezoelectric material, and a wireless transmission sensor (52) installed at the pipe head. The hemispherical protrusion layer (54) is used to generate local turbulent vibration. The vibration is transmitted to the piezoelectric material outer cladding layer (51) through the gradient functionalized enhancement layer (2) to be converted into electrical energy to power the sensor. An opening is made at the connection position of the pipe head for the wireless transmission sensor (52) to be installed, so as to realize the integration of the structural connection part and the intelligent monitoring interface. The asymmetric connection structure includes a concave connecting plate (5) at the head of the pipe, a convex connecting plate (6) at the tail of the pipe, and a fastening disc (7). The concave connecting plate (5) has a hemispherical protrusion (53) on its inner side, and the convex connecting plate (6) has a hemispherical groove (62) that matches the hemispherical protrusion (53) on its inner side. Both the concave connecting plate (5) and the convex connecting plate (6) adopt a gear-shaped hollow design. The fastening disc (7) has a gear-shaped structure and matches the two connecting plates. The connection area is locked by rotating the fastening disc (7). A vibration damping layer (61) is provided on the inner side of the tail of the pipe.

2. The basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, The superabsorbent polymer microcapsules are based on sodium acrylate. The microbial repair capsules have a double-layer core structure. The inner layer is a porous carrier particle that adsorbs Bacillus pasteurellii, and the outer layer encapsulates a nutrient source, which includes at least one of calcium lactate, yeast extract, and nitrate.

3. The basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, The functional gradation principle distribution is specifically as follows: The outer 20mm range of the reinforced protective layer (4) and the pipe connection area are the high-density area of ​​the microbial repair capsule, with a volume fraction of 3.0%-3.5% for the microbial repair capsule, and the medium-density area of ​​the superabsorbent polymer microcapsule, with a volume fraction of 1.0%; The interfacial reinforcement layer between basalt fiber reinforcement and reinforced cement-based concrete is a double-capsule high-density zone, with both types of capsules having a volume fraction of 2.5%-3.0%. In the cement-based concrete reinforcement engineering (43) of other parts of the pipeline body, the total integral of the two capsules is 1.5% and they are evenly distributed.

4. The basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, The fastening disc (7) is made of basalt fiber, and its axial limiting plate (71) is provided with stiffening ribs (72).

5. A basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, The longitudinal bars (41) of the basalt fiber reinforced cage are pre-bent in the connection area. The bent longitudinal bars (41) and the circumferential stirrups (42) form a spatial anchorage skeleton. The cement-based concrete of the reinforcement project is formed by a one-time casting process and forms an integral reinforcement node with the skeleton.

6. The basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, The wireless transmission sensor (52) is used to monitor water pressure, flow rate and water quality parameters in the pipeline in real time.

7. A basalt fiber underground water conveyance intelligent sensing pipeline for desert areas according to claim 1, characterized in that, Both the concave connecting plate (5) and the convex connecting plate (6) are integrally cast at the connection point by reinforced cement-based concrete reinforcement protective layer, and are continuously connected with the reinforcement protective layer (4) of the main body of the pipeline.

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