MUAP double-peak ultra-high molecular weight polyethylene winding alloy pipeline

Abstract

The utility model relates to an MUAP double-peak ultra-high molecular weight polyethylene winding alloy pipeline. The winding alloy pipeline comprises a pipe layer and a winding reinforcing layer from inside to outside, and is characterized in that the winding reinforcing layer is formed by sequentially arranging double-peak trapezoidal structural bodies and double-wave reinforcing load surface structural bodies at intervals, the double-peak trapezoidal structural bodies and the double-wave reinforcing load surface structural bodies are spirally arranged, and the peak height of each double-peak trapezoidal structural body is larger than the wave height of each double-wave reinforcing load surface structural body. The winding reinforcing layer is made into a structure combining the double-peak trapezoidal structural body and the double-wave reinforcing load surface structural body, so that stress generated by external load on the pipeline is dispersed and conducted, the contact area with a foundation is increased, and the optimal effect that the foundation and the pipeline are stressed together is achieved; the rigidity and flexibility of the ring can meet the requirements of high-standard rain and sewage engineering and chemical liquid conveying projects, and the ring is good in corrosion resistance and long in service life.

Description

Technical Field

[0001] The utility model relates to a pipeline, in particular to a MUAP bimodal ultra-high molecular weight polyethylene winding alloy pipeline. Background Art

[0002] In recent years, with the rapid development of various industries in society, the municipal construction in cities and rural areas has witnessed a huge boom. In particular, the great confusion brought by urban waterlogging and the lack of rural sewage pipelines have brought unprecedented opportunities to the urban municipal drainage industry. And improving the design concept of urban rain and sewage pipelines and the replacement of rain and sewage products are the biggest issues faced by this industry at present. Currently, the municipal rain and sewage pipelines are mainly products produced with PE raw materials, which can be divided into products made of pure PE raw materials and pipelines composed of PE raw materials combined with steel plates, steel wires and reinforcing skeletons. The commonly used products of the former are: HDPE double-wall corrugated pipes, HDPE structural wall (hollow wall) winding pipes, buried internal rib (including multi-rib) reinforced polyethylene (PE) spiral corrugated pipes, etc. The advantages of such products are: pure HDPE raw materials, simple manufacturing process, good corrosion resistance and long service life. The disadvantages are: relatively low ring stiffness (compared with composite pipes), relatively high cost, and when the pipeline is slightly under pressure for drainage, there is no anti-disconnection device, which is easy to disconnect and break, resulting in water leakage and the ground subsiding, and it cannot be used normally. The commonly used products of the latter are: polyethylene steel-plastic winding drainage pipes, buried double-flat-wall steel-plastic composite drainage pipes, steel-belt reinforced polyethylene (PE) spiral corrugated pipes, reinforced polyethylene (PE) composite pipes, hollow-wall steel-plastic polyethylene pipes, etc. This kind of pipeline is a drainage pipeline produced by combining PE raw materials with steel plates, steel wires and reinforcing skeletons. Its advantages are: high ring stiffness, low production cost, and can make large-diameter pipelines. The disadvantages are: the combination of steel plates, steel wires and reinforcing skeletons and the original pipeline structure is not firmly bonded, which is easy to cause dislocation or loosening, affecting the comprehensive stress-bearing effect. Moreover, although the steel has anti-corrosion treatment, during the use of the pipeline, it is inevitable that water will invade the steel. Over time, the steel will rust, and when the rust reaches a certain area, its load-bearing capacity will be greatly reduced, resulting in the collapse of the pipeline and the ground subsidence, and the drainage pipeline cannot be used normally, affecting people's normal life, causing urban environmental pollution and economic losses. Therefore, there is an urgent need to invent a new type of pipeline product that retains the advantages of the above two products and overcomes the disadvantages. Summary of the Invention

[0003] The purpose of the utility model is to address the above existing problems and deficiencies, and provide a MUAP bimodal ultra-high molecular weight polyethylene winding alloy pipeline with a structure that combines a winding reinforcement layer made into a bimodal trapezoidal structure body and a double-wave reinforcement load surface structure body, which is beneficial to the stress dispersion and conduction of the external load generated on the pipeline, increases the contact area with the foundation, achieves the best effect of the common stress-bearing of the foundation and the pipeline, and both the ring stiffness and ring flexibility can meet the requirements of high-standard rain and sewage projects and chemical liquid transportation projects, and has good corrosion resistance and long service life.

[0004] The technical solution of the utility model is realized as follows:

[0005] For the MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe of the utility model, the wound alloy pipe includes a pipe layer and a winding reinforcement layer from the inside to the outside. The characteristics are that the winding reinforcement layer is composed of bimodal trapezoidal structures and double-wave enhanced load-bearing surface structures arranged in a spiral and spaced in sequence, and the peak height of the bimodal trapezoidal structure is greater than the wave height of the double-wave enhanced load-bearing surface structure.

[0006] MUAP is the abbreviation of Modified UHMWPE A ll oy Pipe.

[0007] Furthermore: the top of each single peak of the bimodal trapezoidal structure is a planar trapezoid, and the connection between the top plane and the two sides of the planar trapezoid is made into a circular arc transition. Two planar trapezoids form a bimodal structure to form a double-flat peak type carrier. The inner and outer wall pressure points between the two single peaks of the bimodal trapezoidal structure are circular single arms. The double-wave enhanced load-bearing surface structure is a corrugated structure with two upward-arching semi-circular corrugations.

[0008] Preferably: the single-peak interval width b1 of the bimodal trapezoidal structure is 1 / 5 of the height h, the bottom width b of the single peak is similar to the height h, and the top width b3 of the single peak is 2 / 3 of the height h. The distance b2 between two peaks is 3 times the bottom width b of the single peak. The radius r1 of the double wave in the double-wave enhanced load-bearing surface structure is 2 times the single-peak interval width b1. The top thickness of the bimodal is 4 / 5 of the bottom thickness, the thickness of both sides of the single-peak trapezoid is 1 time the bottom layer thickness, and the thickness of the pressure point between the two single-peak trapezoids is 2 times the bottom layer thickness of the trapezoid. The distance between the semi-circular corrugated structures between adjacent bimodals is 1 / 3 of the bimodal distance, the bottom of the structure is 1 time the bottom thickness of the single-peak trapezoid, and the thickness of the semi-circular corrugated wall is 1.2 times the thickness of both sides of the single-peak trapezoid.

[0009] To prevent the product of the utility model from being disconnected and broken during use, resulting in water leakage and ground collapse and inability to be used normally, one end of the wound alloy pipe is connected with a frustum-shaped self-locking anti-disconnection flared opening, and the other end is connected with a circular plug. When two wound alloy pipes are connected, reliable self-locking connection is realized through the cooperation and insertion of a circular plug at one end and a frustum-shaped self-locking anti-disconnection flared opening at the other end; the frustum-shaped self-locking anti-disconnection flared opening includes a frustum-shaped flared opening and a self-locking anti-disconnection device arranged on the frustum-shaped flared opening. The self-locking anti-disconnection device is composed of a flared opening groove and an enhanced expansion rubber ring or an inverted hook anti-corrosion and anti-disconnection enhanced rubber ring arranged at the flared opening groove. The circular plug is a circular plug with a sealing ring and a groove.

[0010] The winding alloy pipe described in the present utility model is made of a modified high-density polyethylene nano-alloy material, and the modified high-density polyethylene nano-alloy material is a high-strength alloy material produced by modifying high-density polyethylene as the main raw material and adding nano-enhancing materials.

[0011] The composition of the modified high-density polyethylene nano-alloy material is proportioned by mass parts as follows:

[0012] 100 parts of high-density polyethylene,

[0013] 4 - 6 parts of ultra-high molecular weight polyethylene,

[0014] 8 - 10 parts of nano-steel enhancing material,

[0015] 3 - 5 parts of coupling agent,

[0016] 3 - 6 parts of lubricant,

[0017] 2 - 3 parts of ultra-high molecular phase solvent.

[0018] Among them, the nano-steel enhancing material is formed by proportioning nano-calcium carbonate and nano-talc powder according to a mass ratio of 7:3.

[0019] Advantages and beneficial effects of the patent solution:

[0020] Compared with the prior art, the outer surface of the entire pipeline is in a bimodal spiral shape. The upper ends of the two peaks are planar trapezoids, and the two trapezoids form a bimodal structure body, forming a double-flat-peak carrier. In this way, when the pipeline is buried underground, the pressure passing through the pipeline can be evenly distributed to the surface of the pipe material through the double-flat-peak carrier, and the pressure is transmitted to the inner wall of the pipe material by the vertical supports on both sides of the bimodal trapezoid, achieving stress redistribution. And between the two peaks of the pipe material, there are two semi-circular arch corrugated structures. The most prominent feature of this structure is to enhance the planar stiffness between the two peaks and jointly form a stable combination body with the two peaks on both sides, enabling them to transmit and support each other during the stress-bearing process, achieving the combined stress-bearing effect. Additionally, the material used in this utility model is a modified nano-polymer alloy material, which is an excellent rigid material. The combination of the structural shape of the pipe material and the modified nano-polymer alloy material used to produce the pipe material greatly improves the load-bearing capacity of the pipe material and improves the ring flexibility effect. In the drainage projects where it is used, the use effect is not reduced while the cost is effectively reduced, achieving certain social benefits. It is an innovative sewage discharge pipeline. Its greatest advantage lies in continuous spiral production, with the stress-bearing surfaces conducting each other, improving the weakness of the full-plane load-bearing of the existing double-wall corrugated pipe. Together with the modified nano-alloy polymer material and the double-peak double-wave structural form, it achieves the most stable structural stress-bearing body with uniform load stress distribution. In this way, both the ring stiffness and the ring flexibility are improved, greatly enhancing the performance of the pipe material. It is an improved replacement for the original double-wall corrugated pipe and is very suitable for rain and sewage drainage and chemical liquid transportation in various states. This pipe material will not rust during the process of rain and sewage discharge and chemical liquid discharge, nor will it crack due to uneven thermal expansion and contraction. The pipe material described in this utility model has the advantages of convenient construction and installation and long service life. Currently, in many projects, pipe materials made of composite steel plates (such as steel-belt reinforced corrugated pipes, plastic-steel wound pipes, etc.) are used. The steel plates composite in the pipe materials all have varying degrees of rust during use. After a certain number of years of use, they will be partially corroded, extremely likely to cause the collapse of the pipe material, resulting in pipeline blockage, causing the road surface to collapse and causing serious safety accidents. While the double-peak high-strength spiral alloy pipe in this utility model exactly makes up for the above-mentioned deficiencies of the pipe materials. It has both high ring stiffness and ring flexibility, and will not crack due to the thermal expansion and contraction phenomenon with too large temperature difference and different expansion coefficients, nor will it be corroded and damaged by moisture (water), seawater, sewage, chemical water, etc., achieving multiple benefits. It is the first choice for municipal drainage and chemical project engineering.

[0021] The following further describes the present utility model with reference to the accompanying drawings. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the winding alloy pipeline of the present utility model;

[0023] Figure 2 is Figure 1 partial sectional structural diagram of;

[0024] Figure 3 For Figure 2 a schematic enlarged view of the structure at position B in an embodiment;

[0025] Figure 4 a schematic sectional view of the local structure when two pipes of the present utility model are connected. Detailed implementation manners

[0026] As Figures 1-4 shown, the MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe of the present utility model includes, from the inside to the outside, a pipe layer 1 and a winding reinforcement layer. The winding reinforcement layer is formed by sequentially and alternately arranging bimodal trapezoidal structures 2 and double-wave enhanced load-bearing surface structures 3 in a spiral manner. The peak height of the bimodal trapezoidal structure 2 is greater than the wave height of the double-wave enhanced load-bearing surface structure 3. The top of each single peak of the bimodal trapezoidal structure 2 is a planar trapezoid, and the connection between the top plane of the planar trapezoid and the two side edges is made into a circular arc transition. Two planar trapezoids form a bimodal structure to form a double-flat peak type carrier. The circular single arm 21 is located at the pressure points on the inner and outer walls between the two single peaks of the bimodal trapezoidal structure 2. The double-wave enhanced load-bearing surface structure 3 is a corrugated structure with two upward-arching semi-circular corrugations.

[0027] Preferably, in the double-peak trapezoidal structure 2, the width b1 between the single peaks is 1 / 5 of the height h, the bottom width b of the single peak is close to the height h, and the top width b3 of the single peak is 2 / 3 of the height h. The distance b2 between the two peaks is 3 times the bottom width b of the single peak; in the double-wave enhanced load surface structure 3, the radius of the double wave is 2 times the width b1 between the single peaks. The top thickness h1 of the double peak is 4 / 5 of the bottom thickness, the thickness on both sides of the single-peak trapezoid is 1 times the bottom layer thickness, the thickness of the pressure point between the two single-peak trapezoids is 2 times the bottom layer thickness of the trapezoid, the distance between the semi-circular corrugated structures between adjacent double peaks is 1 / 3 of the double-peak distance, the bottom h2 of the structure is 1 times the bottom thickness of the single-peak trapezoid, and the thickness of the semi-circular corrugated wall is 1.2 times the thickness on both sides of the single-peak trapezoid. To prevent the product of the present invention from being disengaged and broken during use, resulting in water leakage and ground collapse and inability to be used normally, one end of the wound alloy pipe is connected with a frustum-shaped self-locking anti-disengagement flared opening 4, and the other end is connected with an annular plug 5. When two wound alloy pipes are connected, reliable self-locking connection is achieved through the cooperation and insertion of an annular plug 5 at one end with a frustum-shaped self-locking anti-disengagement flared opening 4 at the other end; the frustum-shaped self-locking anti-disengagement flared opening 4 includes a frustum-shaped flared opening and a self-locking anti-disengagement device provided on the frustum-shaped flared opening. Preferably, the self-locking anti-disengagement device is composed of a flared opening groove and an enhanced expansion rubber ring or a barb anti-corrosion and anti-disengagement enhanced rubber ring installed in the flared opening groove. The annular plug 5 is an annular plug with a sealing ring and a groove. The enhanced expansion rubber ring is a water-swellable rubber ring. Two grooves can be provided on the annular plug. The front one is for installing the sealing ring. The rear one cooperates with the enhanced expansion rubber ring or the barb anti-corrosion and anti-disengagement enhanced rubber ring for clamping. The self-locking anti-disengagement device in this application is divided into two forms according to different use scenarios. One is when the conveying medium is rainwater or sewage, a self-locking anti-disengagement device with an enhanced expansion rubber ring is used. The enhanced expansion rubber ring naturally expands when encountering water, fully contacts the groove in the flared opening and the outer wall of the plug or the groove on the outer wall to form self-locking, and at the same time, the rigidity and toughness are increased to achieve the purpose of self-locking, anti-disengagement and water avoidance. The other is when the conveying medium is a chemical liquid, a self-locking anti-disengagement device with a barb anti-corrosion and anti-disengagement enhanced rubber ring is used. When the pipeline is installed, the barb anti-corrosion and anti-disengagement enhanced rubber ring smoothly inserts into the flared opening along with the plug, and naturally bounces up after exceeding the boundary of the groove, and the barb hooks the flared opening to form self-locking. The anti-corrosion and anti-disengagement enhanced rubber ring and the sealing rubber ring in the front groove of the plug act together to achieve the effects of sealing the pipeline to prevent leakage and self-locking and anti-disengagement.

[0028] The wound alloy pipe described in the present invention is made of a modified high-density polyethylene nano-alloy material, and the modified high-density polyethylene nano-alloy material is a high-strength alloy material produced by modifying high-density polyethylene as the main raw material and adding nano-enhancing materials.

[0029] The composition of the modified high-density polyethylene nano-alloy material is as follows according to the mass ratio:

[0030] 100 parts of high-density polyethylene,

[0031] 8 - 6 parts of ultra - high molecular weight polyethylene,

[0032] 8 - 10 parts of nano - enhanced steel material,

[0033] 3 - 5 parts of coupling agent,

[0034] 5 - 7 parts of lubricant,

[0035] 2 - 3 parts of ultra - high molecular phase solvent.

[0036] The nano - enhanced steel material is prepared by mixing nano - calcium carbonate and nano - talcum powder according to a mass ratio of 7:3, and the fineness of nano - calcium carbonate and nano - talcum powder is greater than 8000 mesh.

[0037] The preparation method of the MUAP bimodal ultra - high molecular weight polyethylene winding alloy pipe is as follows: First, prepare the modified high - density polyethylene nano - alloy material, then use the single - screw extruder on the double - wall corrugated pipe equipment to process the modified high - density polyethylene nano - alloy material into a molten state, and then through the head and die, the molten modified high - density polyethylene nano - alloy material is extruded into a pipe mold, and vacuum - pressed and molded. After cooling and cutting, the MUAP bimodal ultra - high molecular weight polyethylene winding alloy pipe is obtained.

[0038] The method for preparing the modified high - density polyethylene nano - alloy material includes the following steps:

[0039] (1). Weigh the raw materials of high - density polyethylene, ultra - high molecular weight polyethylene and the auxiliary agents of nano - enhanced steel material, coupling agent, lubricant according to the formula requirements, then mix the raw materials and various auxiliary agents with an appropriate amount of ultra - high molecular phase solvent. Under the stirring and kneading action of a high - speed kneader, the various materials are evenly dispersed, and under the high - speed stirring and rotating kneading action, the molecules of various materials are closely combined with each other to form a kneaded semi - finished raw material.

[0040] (2). Put the semi - finished raw material into a twin - screw extruder for plasticization. The material is in the barrel at 180 - 210 °C and is repeatedly extruded and sheared by multiple groups of 90 - degree and 60 - degree shear blocks of the screw thread to reach a high pressure of 18 MPa, so that the material is fully plasticized, the molecular structure is recombined to reach a molten state, and then it is extruded and pelletized by a single - screw extruder. After dehydration, drying, and homogenization processes, finally, the modified high - density polyethylene nano - alloy material is made.

[0041] In the MUAP bimodal ultra - high molecular weight polyethylene winding alloy pipe of the present utility model, it is formed by sequentially and alternately arranging a spiral bimodal trapezoidal structure body and a double - wave enhanced load - bearing surface structure body produced continuously by a production line, and the peak height of the bimodal trapezoidal structure body is greater than the wave height of the double - wave enhanced load - bearing surface structure body. Changing the state that the wave crests of the previous corrugated pipes are in the same plane is beneficial to the distribution and conduction of the load.

[0042] Due to the compatible combination of ultra-high molecular weight polyolefin and nano-enhancer, the alloy material of the winding alloy pipeline described in the present utility model breaks the molecules of each raw material and recombines the molecular structure form, thereby forming a stable molecular chain structure body, obtaining ultra-high strength, impact strength, and increasing toughness and material stability. The more obvious feature of this material is that the flexural modulus and impact strength of the material are greatly improved. Therefore, the ring stiffness and ring flexibility of the produced anti-corrosion sewage discharge pipeline are significantly improved, which is especially suitable for places and medium projects with complex terrain and geology and high corrosion of transported liquids, contributing a new type of anti-corrosion sewage discharge pipeline to the country and society.

[0043] In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this patent.

[0044] Although the present utility model is described with reference to specific embodiments, such description does not mean a limitation to the present utility model. Other variations of the disclosed embodiments are predictable to those skilled in the art with reference to the description of the present utility model, and such variations should fall within the scope defined by the appended claims.

Claims

1. A MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipeline, wherein the wound alloy pipeline comprises a pipe layer (1) and a wound reinforcement layer from the inside to the outside, and is characterized in that: The winding reinforcement layer is formed by arranging double-peak trapezoidal structures (2) and double-wave enhanced load-bearing surface structures (3) in a spiral and sequentially spaced manner, and the peak height of the double-peak trapezoidal structure (2) is greater than the wave height of the double-wave enhanced load-bearing surface structure (3).

2. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe according to claim 1, characterized in that: The top of each single peak of the double-peak trapezoidal structure (2) is a planar trapezoid, and the connection between the top plane and the two side edges of the planar trapezoid is made with a rounded transition. Two planar trapezoids form a double-peak structure, forming a double-flat-peak carrier. The circular single arms (21) are at the pressure points on the inner and outer walls between the two single peaks of the double-peak trapezoidal structure (2).

3. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe according to claim 1, characterized in that: The double-wave enhanced load-bearing surface structure (3) is a corrugated structure with two upward-arching semi-circular corrugations.

4. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe according to claim 2, characterized in that: In the double-peak trapezoidal structure (2), the width b1 between single peaks is 1 / 5 of the height h, the bottom width b of a single peak is similar to the height h, the top width b3 of a single peak is 2 / 3 of the height h, and the distance b2 between two double peaks is 3 times the bottom width b of a single peak; in the double-wave enhanced load-bearing surface structure (3), the radius of the double waves is 2 times the width b1 between single peaks.

5. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe according to claim 2, characterized in that: The thickness at the top of the double peaks is 4 / 5 of the thickness at the bottom, the thickness on both sides of a single-peak trapezoid is 1 time the thickness of the bottom layer, the thickness at the pressure point between two single-peak trapezoids is 2 times the thickness of the trapezoidal bottom layer, the distance between the semi-circular corrugated structures between adjacent double peaks is 1 / 3 of the double-peak distance, the bottom of the structure is 1 time the bottom thickness of the single-peak trapezoid, and the thickness of the semi-circular corrugated wall is 1.2 times the thickness on both sides of the single-peak trapezoid.

6. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipe according to claim 1, wherein: One end of the winding alloy pipe is connected with a frustum-shaped self-locking anti-disengagement flared opening (4), and the other end is connected with a circular plug (5). When two winding alloy pipes are connected, reliable self-locking connection is achieved through the cooperation and insertion of a circular plug (5) at one end and a frustum-shaped self-locking anti-disengagement flared opening (4) at the other end.

7. The MUAP bimodal ultra-high molecular weight polyethylene wound alloy pipeline according to claim 6, characterized in that: The frustum-shaped self-locking anti-disengagement flared opening (4) includes a frustum-shaped flared opening and a self-locking anti-disengagement device provided on the frustum-shaped flared opening. The self-locking anti-disengagement device is composed of a flared opening groove and an enhanced expansion rubber ring (6) or an inverted hook anti-corrosion and anti-disengagement enhanced rubber ring installed in the flared opening groove. The circular plug (5) is a circular plug with a sealing ring (7) and a groove.

8. The MUAP bimodal ultrahigh molecular weight polyethylene wound alloy pipe according to claim 7, characterized in that: Two grooves can be provided on the circular plug (5). The front one is for installing the sealing ring (7), and the rear one is for cooperating and clamping with the enhanced expansion rubber ring (6) or the inverted hook anti-corrosion and anti-disengagement enhanced rubber ring.

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