Compression-resistant damping plastic pipe

Abstract

The utility model discloses a compression-resistant shock-absorbing plastic pipe, which comprises a pipe body, the pipe body is sequentially provided with a protective layer, a support layer, a shock-absorbing layer, a stabilizing layer and an inner layer from outside to inside in a bonding way, the shock-absorbing layer consists of a first connecting layer, a middle layer and a second connecting layer, the middle layer is of a honeycomb structure consisting of a plurality of groups of hexagonal through holes, the hexagonal through holes are filled with hollow microspheres used for shock absorption. Through the embedded structure of the inner and outer arc-shaped protrusions of the protective layer and the grooves of the supporting layer, the synergistic effect of the annularly-arranged supporting cylinders of the supporting layer, the honeycomb structure of the damping layer and the hollow microspheres wrapping the gel layer, and the filling design of the elastic damping particles, a multi-dimensional pressure dispersion and vibration absorption system is constructed; local stress concentration and interlayer slippage are effectively avoided, the overall compression resistance and the damping effect of the pipeline are remarkably improved, and the pipeline is adaptive to external loads and vibration impact under complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe technology, and more specifically, to a pressure-resistant and shock-absorbing plastic pipe. Background Technology

[0002] Plastic pipes are widely used in municipal engineering, building water supply and drainage, industrial fluid transportation, and agricultural irrigation and drainage due to their advantages such as being lightweight, corrosion-resistant, and easy to install. However, these pipes often face complex operating conditions in actual use: when laid underground, they must withstand soil pressure, ground loads, and external forces caused by foundation settlement; when transporting fluids, they encounter internal pressure fluctuations caused by valve start-stop and pump switching; and they may also be affected by external impacts and vibrations. Therefore, stringent requirements are placed on the pipes' pressure resistance and vibration damping performance.

[0003] To meet the above-mentioned usage requirements, various improved plastic pipes have emerged in the existing technology. Some pipes adopt a multi-layer composite structure, which enhances the overall strength by combining different materials; some introduce corrugated or honeycomb structures into the pipe structure to enhance pressure resistance and deformation resistance; and others attempt to improve fluid transport efficiency by optimizing the inner wall morphology of the pipe.

[0004] However, existing plastic pipes still have certain problems. On the one hand, most designs only focus on optimizing a single performance aspect. Either they improve compressive strength but have poor shock absorption, failing to effectively absorb the energy from external impacts and internal pressure fluctuations, leading to easy damage and leakage under complex working conditions; or they overemphasize flexible shock absorption at the expense of structural stability, making them prone to deformation and collapse after long-term use. On the other hand, the reliability of the connections between pipe layers is insufficient, making them prone to interlayer slippage and separation under stress, further weakening the overall mechanical properties. At the same time, the resistance generated by fluid flow inside the pipe is relatively large, and the impact caused by pressure fluctuations will continue to act on the pipe wall, not only affecting the transportation efficiency but also accelerating pipe aging and shortening its service life. Therefore, we urgently need a pressure-resistant and shock-absorbing plastic pipe to solve the above problems. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a pressure-resistant and shock-absorbing plastic pipe. Through a multi-layer composite interlocking structure, a honeycomb-hollow microsphere-gel layer synergistic shock-absorbing design, and spiral groove optimization, the pipe achieves improved pressure resistance and shock absorption performance, stable interlayer connection, and is suitable for stable transportation under complex working conditions.

[0006] According to a first aspect of this utility model, a pressure-resistant and shock-absorbing plastic pipe is provided, comprising a pipe body, wherein a protective layer, a support layer, a shock-absorbing layer, a stabilizing layer and an inner layer are sequentially bonded together from the outside to the inside of the pipe body; the shock-absorbing layer is composed of a first connecting layer, an intermediate layer and a second connecting layer, wherein the intermediate layer is a honeycomb structure composed of multiple sets of hexagonal through holes, and the hexagonal through holes are filled with hollow microspheres for shock absorption; the stabilizing layer is a continuous annular corrugated structure, wherein the corrugated protrusions abut against the inner layer; the inner wall of the inner layer is provided with spiral grooves adapted to the flow direction of water or gas.

[0007] Optionally, the outer side of the protective layer is continuously provided with a first arc-shaped protrusion, and the inner side of the protective layer is continuously provided with a second arc-shaped protrusion, and the second arc-shaped protrusion abuts against the outer side of the support layer.

[0008] Optionally, the ratio of the sagittal height of the first arc-shaped protrusion to that of the second arc-shaped protrusion is 2:1.

[0009] Optionally, a matching groove is provided at the connection between the support layer and the second arc-shaped protrusion, and the second arc-shaped protrusion is fitted into the groove. Support cylinders are arranged equidistantly in an annular pattern on the inner side of the support layer.

[0010] Optionally, the free end of the supporting cylinder penetrates through the first connecting layer and abuts against the inner wall of the second connecting layer.

[0011] Optionally, a trapezoidal groove is provided on the outer side of the inner layer, and the top of the corrugated protrusion of the stabilizing layer abuts against the inner wall of the trapezoidal groove.

[0012] Optionally, the corrugated recesses of the stabilizing layer are filled with elastic damping particles between them and the inner layer.

[0013] Optionally, the surface of the hollow microspheres is coated with a gel layer for shock absorption.

[0014] 1. According to one embodiment of this disclosure, the pressure-resistant and shock-absorbing plastic pipe constructs a multi-dimensional pressure dispersion and vibration absorption system through the interlocking structure of the inner and outer arc-shaped protrusions of the protective layer and the groove of the support layer, the supporting cylinders arranged in a ring in the support layer, the synergistic effect of the honeycomb structure of the shock-absorbing layer and the hollow microspheres of the coating gel layer, and the filling design of elastic damping particles. This effectively avoids local stress concentration and interlayer slippage, significantly enhances the overall pressure resistance and shock absorption effect of the pipe, and adapts to external loads and vibration impacts under complex working conditions.

[0015] 2. According to one embodiment of this disclosure, the pressure-resistant and shock-absorbing plastic pipe optimizes the fluid flow path through the spiral grooves on the inner wall of the inner layer that adapt to the fluid flow direction. Combined with the precise fit of the trapezoidal grooves on the outer layer and the corrugated protrusions on the stabilizing layer, it not only reduces the fluid transport resistance and pressure fluctuations, but also strengthens the reliability of the interlayer connection. At the same time, the multi-layer bonding and interlocking structure ensures long-term stability, reduces the risk of leakage, and extends the service life of the pipe.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of a pressure-resistant and shock-absorbing plastic pipe in one embodiment;

[0019] Figure 2 This is a schematic diagram of a half-section of a pressure-resistant and shock-absorbing plastic pipe in one embodiment;

[0020] Figure 3 One embodiment is a pressure-resistant and shock-absorbing plastic pipe. Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the intermediate layer structure of a pressure-resistant and shock-absorbing plastic pipe in one embodiment;

[0022] Figure 5 This is a schematic diagram of the hollow microsphere structure of a pressure-resistant and shock-absorbing plastic tube in one embodiment.

[0023] The diagram shows the following: 1. Pipe body;

[0024] 2. Protective layer; 21. First arc-shaped protrusion; 22. Second arc-shaped protrusion;

[0025] 3. Support layer; 31. Groove; 32. Supporting cylinder;

[0026] 4. Damping layer; 41. First connecting layer; 42. Intermediate layer; 43. Second connecting layer; 44. Hexagonal through-holes; 45. Hollow microspheres;

[0027] 5. Stabilizing layer;

[0028] 6. Inner layer; 61. Spiral groove; 62. Trapezoidal groove; 63. Elastic damping particles;

[0029] 7. Gel layer. Detailed Implementation

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0032] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0033] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0034] like Figure 1-5 As shown, a pressure-resistant and shock-absorbing plastic pipe includes a pipe body 1, and the pipe body 1 is provided with a protective layer 2, a support layer 3, a shock-absorbing layer 4, a stabilizing layer 5 and an inner layer 6 bonded together from the outside to the inside.

[0035] The outer side of the protective layer 2 is continuously provided with a first arc-shaped protrusion 21, and the inner side of the protective layer 2 is continuously provided with a second arc-shaped protrusion 22, and the second arc-shaped protrusion 22 abuts against the outer side of the support layer 3. The ratio of the height of the first arc-shaped protrusion 21 to the height of the second arc-shaped protrusion 22 is 2:1.

[0036] Here, the pipe body 1 adopts a multi-layer composite adhesive structure, with a protective layer 2, a support layer 3, a shock-absorbing layer 4, a stabilizing layer 5, and an inner layer 6 fixedly installed sequentially from the outside to the inside. Each layer is tightly bonded with a special adhesive, with no obvious gaps. The protective layer 2 is made of a composite plastic material that combines wear resistance and corrosion resistance, and its thickness is adapted to the overall design requirements of the pipeline. The outer side of the protective layer 2 has a first arc-shaped protrusion 21 continuously distributed along the axial direction, and the inner side has a second arc-shaped protrusion 22 continuously arranged at the corresponding position. The ratio of the sag of the first arc-shaped protrusion 21 to the second arc-shaped protrusion 22 is 2:1, and the second arc-shaped protrusion 22 directly abuts against the outer side of the support layer 3, with a smooth transition structure at the top of the protrusion.

[0037] Furthermore, the multi-layer composite bonding design enables the pipe body 1 to form a synergistic force-bearing system, avoiding the problem of uneven stress distribution in a single structure; the material properties of the protective layer 2 can resist the wear and corrosion of the pipe by the external environment, extending the overall service life of the pipe. The first arc-shaped protrusion 21 optimizes the external force transmission path through its arc-shaped structural characteristics, avoiding local stress concentration; the second arc-shaped protrusion 22 enhances the tightness of the fit between the protective layer 2 and the support layer 3, and the 2:1 sag-to-height ratio design achieves a functional balance between external protection and interlayer bonding, ensuring both external impact resistance and interlayer connection stability.

[0038] A matching groove 31 is provided at the connection between the support layer 3 and the second arc-shaped protrusion 22, and the second arc-shaped protrusion 22 fits into the groove 31. Support cylinders 32 are arranged equidistantly in an annular pattern on the inner side of the support layer 3. The free end of the support cylinder 32 passes through the first connecting layer 41 and abuts against the inner wall of the second connecting layer 43.

[0039] Here, the support layer 3 is made of high-strength plastic material, and its outer side has a groove 31 that matches the second arc-shaped protrusion 22 of the protective layer 2. The shape and size of the groove 31 are perfectly matched with the second arc-shaped protrusion 22. The second arc-shaped protrusion 22 is embedded in the groove 31 to form a tight fitting structure, and the fitting surface is further fixed by adhesive. Support cylinders 32 are evenly arranged along the annular direction on the inner side of the support layer 3. The support cylinders 32 are solid structures, and their length matches the thickness of the first connecting layer 41 of the shock-absorbing layer 4. The free end passes through the first connecting layer 41 and directly abuts against the inner wall of the second connecting layer 43.

[0040] Furthermore, the interlocking design of the groove 31 and the second arc-shaped protrusion 22 constructs an interlocking structure between layers, effectively limiting the relative displacement between the protective layer 2 and the support layer 3 and preventing interlayer slippage. The support cylinders 32 are distributed equidistantly along the ring to form a three-dimensional support system. The design of penetrating the first connecting layer 41 and abutting against the second connecting layer 43 allows the support force to be directly transmitted to the damping layer 4, realizing the coordinated force sharing between the support layer 3 and the damping layer 4, enhancing the radial structural stability of the pipeline, and preventing excessive deformation of the pipeline when subjected to external forces.

[0041] The damping layer 4 is composed of a first connecting layer 41, an intermediate layer 42 and a second connecting layer 43. The intermediate layer 42 is a honeycomb structure composed of multiple sets of hexagonal through holes 44. The hexagonal through holes 44 are filled with hollow microspheres 45 for damping. The surface of the hollow microspheres 45 is covered with a gel layer 7 for damping.

[0042] Here, the damping layer 4 is composed of a first connecting layer 41, an intermediate layer 42, and a second connecting layer 43 in sequence. Both the first connecting layer 41 and the second connecting layer 43 are connecting materials with adhesive and elastic properties, and are tightly bonded to the support layer 3 and the stabilizing layer 5, respectively. The intermediate layer 42 has a honeycomb structure, composed of multiple sets of hexagonal through holes 44 arranged closely together. The hexagonal through holes 44 are regularly distributed and have no obvious gaps. Each hexagonal through hole 44 is filled with hollow microspheres 45, and the surface of the hollow microspheres 45 is completely covered with a gel layer 7. The gel layer 7 is an elastic material with damping function, and it forms a good fit with the hollow microspheres 45 and the inner wall of the hexagonal through holes 44.

[0043] Furthermore, the first connecting layer 41 and the second connecting layer 43 not only achieve a firm connection between the damping layer 4 and the adjacent layers, but also assist in absorbing vibration energy through their own elastic properties; the honeycomb structure of the intermediate layer 42 utilizes the structural stability of the hexagon to disperse externally transmitted pressure and vibration. The combination of hollow microspheres 45 and gel layer 7 forms a dual damping structure. The gel layer 7 enhances the elastic buffering performance of the hollow microspheres 45. The two work together to achieve efficient absorption and dispersion of vibration energy, reduce the impact of vibration on the overall structure of the pipeline, and prevent pipeline damage caused by vibration.

[0044] The stabilizing layer 5 has a continuous annular corrugated structure, and its corrugated protrusions abut against the inner layer 6.

[0045] Here, the stabilizing layer 5 is a continuous annular corrugated structure made of elastic and strong plastic material, with regular corrugation shape and continuous distribution along the pipe axis. The top of the corrugated protrusions of the stabilizing layer 5 is a flat structure, which closely abuts against the inner wall of the trapezoidal groove 62 on the outer side of the inner layer 6, while the corrugated recesses form gaps with the surface of the inner layer 6. The stabilizing layer 5 adapts to the slight deformation requirements of the pipe after being subjected to stress through the elastic deformation capability of the corrugated structure, and at the same time forms a tight fit with the shock-absorbing layer 4 and the inner layer 6.

[0046] Furthermore, the annular corrugated structure enhances the structural stiffness and elastic deformation capacity of the stabilizing layer 5 through its morphological characteristics. This not only resists external pressure to prevent pipe deformation but also absorbs some vibration energy through elastic deformation. The tight contact between the corrugated protrusions and the trapezoidal groove 62 achieves precise positioning and connection between the stabilizing layer 5 and the inner layer 6, limiting their relative displacement. Simultaneously, the corrugated structure's distributed stress characteristics ensure uniform stress distribution on the pipe, preventing structural damage caused by localized stress concentration and guaranteeing the structural stability of the pipeline under complex operating conditions.

[0047] The inner wall of the inner layer 6 is provided with a spiral groove 61 adapted to the flow direction of water or gas, and a trapezoidal groove 62 is provided on the outer side of the inner layer 6. The top of the corrugated protrusion of the stabilizing layer 5 abuts against the inner wall of the trapezoidal groove 62, and elastic damping particles 63 are filled between the corrugated recess of the stabilizing layer 5 and the inner layer 6.

[0048] Here, the inner layer 6 serves as the fluid contact layer for the pipeline. Spiral grooves 61 are formed on the inner wall along the direction of water or gas flow. These grooves are distributed in a regular spiral pattern, their shape matching the fluid flow trajectory. Multiple sets of trapezoidal grooves 62 are formed on the outer side of the inner layer 6. These grooves are equidistantly distributed in a ring along the inner layer 6, their number matching the number of corrugated protrusions in the stabilizing layer 5. The walls of the trapezoidal grooves 62 are smooth slopes, forming a complete fit with the top of the corrugated protrusions in the stabilizing layer 5. The material of the inner layer 6 possesses corrosion resistance, smoothness, and wear resistance, forming a good fit with both the stabilizing layer 5 and the elastic damping particles 63.

[0049] Furthermore, the spiral grooves 61 on the inner wall guide the fluid to form an orderly flow state, optimize the fluid flow path, reduce frictional interference between the fluid and the pipe wall, and reduce pressure fluctuations caused by fluid flow, thus reducing the impact of pressure fluctuations on the pipe wall. The trapezoidal grooves 62 on the outer side provide precise positioning support for the stabilizing layer 5. Through the full fit between the groove wall and the corrugated protrusions, the contact area between the two is increased, enhancing the reliability of the interlayer connection and preventing relative slippage between the stabilizing layer 5 and the inner layer 6, thereby achieving synergistic optimization of structural stability and fluid transport efficiency.

[0050] Furthermore, elastic damping particles 63 are filled between the corrugated recesses of the stabilizing layer 5 and the inner layer 6. The particles are made of granular material with elastic damping properties. After filling, there are no obvious gaps between the particles, and they form a tight fit with the inner wall of the corrugated recesses of the stabilizing layer 5 and the outer surface of the inner layer 6. They do not affect the connection structure between the stabilizing layer 5 and the trapezoidal groove 62. When the pipeline is subjected to force or vibration, they can play a buffering role through their own deformation. The elastic damping particles 63 fill the gap between the stabilizing layer 5 and the inner layer 6, avoiding the problem of uneven force distribution caused by the gap, making the force transmission of the pipeline more uniform. At the same time, the elastic damping particles 63 absorb the residual vibration energy generated during pipeline operation through their own elastic deformation, block the vibration transmission path, further enhance the overall vibration reduction effect of the pipeline, reduce the impact of vibration on the pipeline connection parts, delay pipeline aging, and extend the service life of the pipeline.

[0051] In this invention, an integrated pressure-resistant and shock-absorbing system is constructed through the synergistic effect of multiple layers arranged sequentially from the outside to the inside of the pipe body 1: a protective layer 2, a support layer 3, a shock-absorbing layer 4, a stabilizing layer 5, and an inner layer 6. When the pipe is subjected to external pressure, the first arc-shaped protrusion 21 on the outer side of the protective layer 2 disperses and transmits the concentrated pressure, while the second arc-shaped protrusion 22 on the inner side engages with the groove 31 of the support layer 3 to prevent interlayer slippage. The support layer 3 forms a three-dimensional support network through the equidistantly arranged annular support cylinders 32 on its inner side, uniformly transmitting the pressure to the second connecting layer 43 of the shock-absorbing layer 4. The continuous annular corrugated structure of the stabilizing layer 5 disperses radial pressure using its own shape and buffers impact through elastic deformation. Elastic damping particles 63 fill the gap between the stabilizing layer 5 and the inner layer 6 to ensure uniform pressure transmission. When encountering vibration, the shock-absorbing layer 4... The hexagonal honeycomb structure of the interlayer 42 disperses vibration energy. The hollow microspheres 45 filled in the hexagonal through-holes 44 and the gel layer 7 covering their surface form a double buffer. The first connecting layer 41 and the second connecting layer 43 ensure the connection stability between the damping layer 4 and the adjacent layers. The supporting cylinder 32 prevents the damping layer 4 from being over-deformed. The elastic damping particles 63 further absorb residual vibration energy and block the transmission path. When the internal fluid flows, the spiral grooves 61 on the inner wall of the inner layer 6 guide the fluid to flow in an orderly manner, reducing frictional resistance and pressure fluctuations. The trapezoidal grooves 62 on the outer side of the inner layer 6 and the corrugated protrusions of the stabilizing layer 5 fit precisely, limiting the relative displacement between layers. Through the synergistic cooperation of pressure dispersion, vibration absorption, and fluid optimization, the various structures achieve a dual improvement in pipeline pressure resistance and vibration reduction, ensuring stable use under complex working conditions.

[0052] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pressure-resistant and shock-absorbing plastic pipe, comprising a pipe body (1), characterized in that: The tube body (1) is provided with a protective layer (2), a support layer (3), a shock-absorbing layer (4), a stabilizing layer (5) and an inner layer (6) bonded together from the outside to the inside. The shock-absorbing layer (4) is composed of a first connecting layer (41), an intermediate layer (42) and a second connecting layer (43). The intermediate layer (42) is a honeycomb structure composed of multiple sets of hexagonal through holes (44). The hexagonal through holes (44) are filled with hollow microspheres (45) for shock absorption. The stabilizing layer (5) has a continuous annular corrugated structure, and its corrugated protrusions abut against the inner layer (6); The inner wall of the inner layer (6) is provided with spiral grooves (61) adapted to the flow direction of water or gas.

2. The pressure-resistant and shock-absorbing plastic pipe according to claim 1, characterized in that: The outer side of the protective layer (2) is continuously provided with a first arc-shaped protrusion (21), and the inner side of the protective layer (2) is continuously provided with a second arc-shaped protrusion (22), and the second arc-shaped protrusion (22) abuts against the outer side of the support layer (3).

3. The pressure-resistant and shock-absorbing plastic pipe according to claim 2, characterized in that: The ratio of the sagittal height of the first arc-shaped protrusion (21) to that of the second arc-shaped protrusion (22) is 2:

1.

4. The pressure-resistant and shock-absorbing plastic pipe according to claim 3, characterized in that: The support layer (3) and the second arc-shaped protrusion (22) are connected by a matching groove (31), and the second arc-shaped protrusion (22) and the groove (31) are fitted together. Support cylinders (32) are arranged in annularly at equal intervals on the inner side of the support layer (3).

5. The pressure-resistant and shock-absorbing plastic pipe according to claim 4, characterized in that: The free end of the supporting cylinder (32) passes through the first connecting layer (41) and abuts against the inner wall of the second connecting layer (43).

6. The pressure-resistant and shock-absorbing plastic pipe according to claim 1, characterized in that: The outer side of the inner layer (6) is provided with a trapezoidal groove (62), and the top of the corrugated protrusion of the stabilizing layer (5) abuts against the inner wall of the trapezoidal groove (62).

7. The pressure-resistant and shock-absorbing plastic pipe according to claim 6, characterized in that: The corrugated recess of the stabilizing layer (5) is filled with elastic damping particles (63) between it and the inner layer (6).

8. The pressure-resistant and shock-absorbing plastic pipe according to claim 1, characterized in that: The surface of the hollow microspheres (45) is covered with a gel layer (7) for shock absorption.

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