阅读说明：本技术 一种高强度双波管道及其制备方法 (High-strength double-wave pipeline and preparation method thereof ) 是由 彭小峰 林强 代小勇 于 2020-11-24 设计创作，主要内容包括：本发明提供一种高强度双波管道及其制备方法,其能够制备出的高强度双波管道环刚度高、耐腐蚀性强、承载结构更合理,包括内层聚乙烯、外层聚乙烯、孔网钢带、粘接树脂、防腐层、加强带和热收缩带,孔网钢带设置在内层聚乙烯的上方,孔网钢带的截面具有呈M型的双波波峰,外层聚乙烯贴合设置在孔网钢带的上方,外层聚乙烯的内部设置有粘接树脂,每个双波波峰之间设置有间隙,间隙之间还设置有防腐层、加强带和热收缩带,防腐层紧贴外层聚乙烯设置,加强带和热收缩带设置在防腐层外,热收缩带设置在加强带的上方。(The invention provides a high-strength double-wave pipeline and a preparation method thereof, wherein the high-strength double-wave pipeline which can be prepared is high in ring rigidity, strong in corrosion resistance and more reasonable in bearing structure and comprises inner layer polyethylene, outer layer polyethylene, a mesh steel belt, bonding resin, an anticorrosive layer, a reinforcing belt and a heat shrinkage belt, the mesh steel belt is arranged above the inner layer polyethylene, the cross section of the mesh steel belt is provided with M-shaped double-wave peaks, the outer layer polyethylene is attached to and arranged above the mesh steel belt, the bonding resin is arranged inside the outer layer polyethylene, gaps are formed among the double-wave peaks, the anticorrosive layer, the reinforcing belt and the heat shrinkage belt are further arranged among the gaps, the anticorrosive layer is arranged close to the outer layer polyethylene, the reinforcing belt and the heat shrinkage belt are arranged outside the anticorrosive layer, and the heat shrinkage belt is arranged above the reinforcing belt.)

1. The high-strength double-wave pipeline is characterized by comprising inner-layer polyethylene, outer-layer polyethylene, a meshed steel belt, adhesive resin, an anticorrosive layer, a reinforcing belt and a heat-shrinkable belt, wherein the meshed steel belt is arranged above the inner-layer polyethylene, the cross section of the meshed steel belt is provided with M-shaped double wave crests, the outer-layer polyethylene is arranged above the meshed steel belt in a fitting mode, the adhesive resin is arranged inside the outer-layer polyethylene, a gap is formed between every two wave crests, the anticorrosive layer, the reinforcing belt and the heat-shrinkable belt are further arranged among the gaps, the anticorrosive layer is arranged close to the outer-layer polyethylene, the reinforcing belt and the heat-shrinkable belt are arranged outside the anticorrosive layer, and the heat-shrinkable belt is arranged above the reinforcing belt.

2. The high strength twin wave pipe as defined in claim 1 in which the corrosion protection layer is equal in thickness to the outer polyethylene layer.

3. The high strength twin wave pipe as defined in claim 1 wherein the sum of the thickness of the reinforcing strip and the heat shrink strip is equal to the thickness of the corrosion protection layer.

4. The high strength twin wave pipe as defined in claim 1 wherein the minimum wall thickness of the outer layer polyethylene is 5-11 mm.

5. The high strength twin wave pipe as defined in claim 1 wherein the minimum wall thickness of said inner layer polyethylene is 2.5-6 mm.

6. The preparation method of the high-strength double-wave pipeline is characterized by comprising the following steps of:

(1) preparing a galvanized steel strip layer: starting a pipeline forming device and a bending device, wherein the pipeline forming device and the bending device respectively operate at the speed of 1:1.4, the galvanized steel strip layer is formed for the first time after sequentially passing through a vertical roller and a forming concave-convex roller, a first bending group roller of the bending device forms the galvanized steel strip layer into a steel strip ring, and the bending device adjusts a second bending group roller to polish the surface of the steel strip ring to be smooth and flat; then adjusting a third bending group of rollers to roll the steel belt ring into a circle with the same diameter as the target steel belt ring; the diameter of the steel band ring is equal to the diameter of the target steel band ring plus 30-50 mm; the adjusted circular steel belt ring is transmitted to a feeding device, a feeding motor is started, the relative position of a spacer bush on the feeding device is adjusted, and smooth operation of the formed steel belt ring on the feeding device is guaranteed;

(2) preparation before rolling: the feeding device feeds the end of the circular steel band ring into a position between an upper polytetrafluoroethylene pressure wheel and a lower polytetrafluoroethylene pressure wheel, the upper polytetrafluoroethylene pressure wheel presses downwards, the guide device of the roller is adjusted at the moment, and then the upper polytetrafluoroethylene pressure wheel and the lower polytetrafluoroethylene pressure wheel are loosened; adjusting the winding inclination angles of the four rollers to ensure that the central lines of the upper polytetrafluoroethylene pressure roller, the lower polytetrafluoroethylene pressure roller and the roller are consistent;

(3) formal preparation work: opening an oven, preheating a steel belt to 100 ℃, extruding an outer sheet and an inner sheet of the corrugated pipe, starting a hot air device at the same time, adjusting the rotation speed to a process value, and then pressing the upper polytetrafluoroethylene pressure roller and the lower polytetrafluoroethylene pressure roller; starting a forming motor, a bending motor and a feeding motor, and operating according to corresponding ratios; feeding the steel belt into an upper polytetrafluoroethylene pressure roller, synchronously moving the steel belt along with the inner sheet and the outer sheet, and then guiding the steel belt into a lower polytetrafluoroethylene pressure roller; opening the outer sheet blowing device, and adjusting the edge pressing wheel to ensure that the shapes of the outer sheet and the steel belt are the same;

(4) when the steel belt, the inner sheet and the outer sheet run to the pipe rack, the inner water spraying device is opened to spray water on the inner wall of the pipeline, and the left and right positions and the height of the pipe rack are adjusted according to the natural inclination angle position of the pipe so as to adapt to the requirements of the outer diameter sizes of the pipes with different specifications;

(5) cutting off the end face of the pipe before starting, measuring the inner and outer dimensions of the pipe, and adjusting the operating parameters of the inner sheet extruder and the outer sheet extruder according to the formulated standard of the pipe and the actual dimension condition of the pipe so as to achieve the qualified pipe; the bonding condition of the inner and outer sheets of the pipe is detected, and the heating devices outside the oven and the steel belt are properly adjusted, so that the bonding of the steel belt and the inner and outer sheets of the pipe is reliable.

Technical Field

The invention relates to the field of corrugated pipes, in particular to a high-strength double-wave pipeline and a preparation method thereof.

Background

The composite layers of the steel strip corrugated pipe are carried out in a plastic molten state, and are completely different from secondary melting and forming of a winding pipe (hollow wall pipe), so that the layers are completely bonded, and the firmness is very high. The surface of the steel strip is specially pretreated to enhance the corrosion resistance of the steel and the adhesive force of the steel and plastics and improve the peel strength. The plastic material is wound and formed in a fully molten state, and the overall structure of the pipe is firm and reliable. Due to the adoption of special materials and processes, the corrosion prevention problem of the steel plate is solved, the adhesion degree of the steel plate and the PE material is also solved, the service life of the pipeline is as long as that of a pure plastic pipeline, and the service life is guaranteed to be more than 50 years. In the prior art, the electric hot melting connection, the thermal contraction belt connection, the internal and external extrusion welding or the combination of various connections can be adopted, the connection is firm, and the reliable connection can ensure that the pipeline has zero leakage. However, the corrugated pipe in the prior art is usually of a single-wave structure, and the rigidity and the corrosion resistance of the corrugated pipe are not ideal and are easy to damage.

Disclosure of Invention

The invention aims to provide a high-strength double-wave pipeline and a preparation method thereof, and the high-strength double-wave pipeline which can be prepared has the advantages of high ring rigidity, strong corrosion resistance and more reasonable bearing structure.

The embodiment of the invention is realized by the following steps:

a high-strength double-wave pipeline comprises inner-layer polyethylene, outer-layer polyethylene, a meshed steel belt, bonding resin, an anticorrosive layer, a reinforcing belt and a heat-shrinkable belt, wherein the meshed steel belt is arranged above the inner-layer polyethylene, the cross section of the meshed steel belt is provided with M-shaped double wave crests, the outer-layer polyethylene is attached to the upper portion of the meshed steel belt, the bonding resin is arranged inside the outer-layer polyethylene, gaps are formed between every two wave crests, the anticorrosive layer, the reinforcing belt and the heat-shrinkable belt are further arranged between the gaps, the anticorrosive layer is arranged close to the outer-layer polyethylene, the reinforcing belt and the heat-shrinkable belt are arranged outside the anticorrosive layer, and the heat-shrinkable belt is arranged above the reinforcing belt.

In a preferred embodiment of the present invention, the thickness of the corrosion-resistant layer is equal to the thickness of the outer polyethylene layer.

In a preferred embodiment of the invention, the sum of the thicknesses of the reinforcing tape and the heat shrinkable tape is equal to the thickness of the anticorrosive layer.

In a preferred embodiment of the invention, the minimum wall thickness of the outer polyethylene layer is 5-11 mm.

In a preferred embodiment of the invention, the minimum wall thickness of the inner polyethylene layer is 2.5-6 mm.

In a preferred embodiment of the present invention, there is provided a method for manufacturing a high-strength double-wave pipe, comprising the steps of:

(1) preparing a galvanized steel strip layer: starting the pipeline forming device and the bending device, wherein the pipeline forming device and the bending device respectively operate at the speed of 1:1.4, the galvanized steel strip layer is formed for the first time after sequentially passing through the vertical roller and the forming concave-convex roller, the galvanized steel strip layer is formed into a steel strip ring by a first bending group roller of the bending device, and the bending device adjusts a second bending group roller to polish the surface of the steel strip ring to be smooth and flat; then adjusting a third bending group of rollers to roll the steel belt ring into a circle with the same diameter as the target steel belt ring; the diameter of the steel belt ring is equal to the diameter of the target steel belt ring plus 30-50 mm; the adjusted circular steel belt ring is transmitted to a feeding device, a feeding motor is started, the relative position of a spacer bush on the feeding device is adjusted, and smooth operation of the formed steel belt ring on the feeding device is guaranteed;

(2) preparation before rolling: the feeding device feeds the end of the circular steel band ring into the space between the upper polytetrafluoroethylene pressure wheel and the lower polytetrafluoroethylene pressure wheel, the upper polytetrafluoroethylene pressure wheel presses downwards, the guide device of the roller is adjusted at the moment, and then the upper polytetrafluoroethylene pressure wheel and the lower polytetrafluoroethylene pressure wheel are loosened; adjusting the winding inclination angles of the four rollers to ensure that the central lines of the upper polytetrafluoroethylene pressure roller, the lower polytetrafluoroethylene pressure roller and the roller are consistent;

(3) formal preparation work: opening an oven, preheating a steel belt to 100 ℃, extruding an outer sheet and an inner sheet of the corrugated pipe, starting a hot air device at the same time, adjusting the rotation speed to a process value, and then pressing an upper polytetrafluoroethylene pressure roller and a lower polytetrafluoroethylene pressure roller; starting a forming motor, a bending motor and a feeding motor, and operating according to corresponding ratios; feeding the steel belt into an upper polytetrafluoroethylene pressure roller, synchronously moving the steel belt along with the inner sheet and the outer sheet, and then guiding the steel belt into a lower polytetrafluoroethylene pressure roller; the outer plate blowing device is opened, the edge pressing wheel is adjusted,

ensuring that the shapes of the outer plate and the steel belt are the same;

(4) when the steel belt, the inner sheet and the outer sheet run to the pipe rack, the inner water spraying device is opened to spray water on the inner wall of the pipeline, and the left and right positions and the height of the pipe rack are adjusted according to the natural inclination angle position of the pipe so as to adapt to the requirements of the outer diameter sizes of the pipes with different specifications;

(5) cutting off the end face of the pipe before starting, measuring the inner and outer dimensions of the pipe, and adjusting the operating parameters of the inner sheet extruder and the outer sheet extruder according to the formulated standard of the pipe and the actual dimension condition of the pipe so as to achieve the qualified pipe; the bonding condition of the inner and outer sheets of the pipe is detected, and the heating devices outside the oven and the steel belt are properly adjusted, so that the bonding of the steel belt and the inner and outer sheets of the pipe is reliable.

The embodiment of the invention has the beneficial effects that: according to the high-strength double-wave pipeline, the corrugated layer is provided with the inner polyethylene layer, the outer polyethylene layer, the meshed steel belt, the bonding resin, the anticorrosive layer, the reinforcing belt and the heat shrinkage belt, all material layers are matched with one another, so that the corrugated pipeline is higher in ring rigidity and higher in corrosion resistance, and meanwhile, the corrugated layer is arranged to be in an M-shaped double-wave crest shape, so that the corrugated pipeline is better in bearing performance and can be deeply buried underground for long-term use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

icon: 001-inner layer polyethylene; 002-outer polyethylene; 003-mesh steel strip; 004-bonding resin; 005-anticorrosive layer; 006-reinforcing band; 007-heat shrinkable tape.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First embodiment

Referring to fig. 1, the embodiment provides a high-strength dual-wave pipeline, which includes an inner layer polyethylene 001, an outer layer polyethylene 002, a mesh steel band 003, an adhesive resin 004, an anticorrosive layer 005, a reinforcing band 006 and a heat-shrinkable band 007, wherein the mesh steel band 003 is disposed above the inner layer polyethylene 001, the cross section of the mesh steel band 003 has M-shaped dual-wave peaks, the outer layer polyethylene 002 is attached to and disposed above the mesh steel band 003, the adhesive resin 004 is disposed inside the outer layer polyethylene 002, gaps are disposed between the dual-wave peaks, the anticorrosive layer 005, the reinforcing band 006 and the heat-shrinkable band 007 are further disposed between the gaps, the anticorrosive layer 005 is disposed in close contact with the outer layer polyethylene 002, the reinforcing band 006 and the heat-shrinkable band 007 are disposed outside the anticorrosive layer 005, and the heat-shrinkable band 007 is disposed above the reinforcing band 006.

More specifically, the thickness of the anticorrosive layer 005 in the present embodiment is equal to the thickness of the outer polyethylene 002. The sum of the thicknesses of the reinforcing tape 006 and the heat shrinkable tape 007 is equal to the thickness of the corrosion protection layer 005. The minimum wall thickness of the outer layer of polyethylene 002 is 5-11 mm. The minimum wall thickness of the inner layer polyethylene 001 is 2.5-6 mm. The height of the double wave crest is 10-22mm, and the thickness of the anticorrosive coating is as follows: 2.2mm-3.5 mm.

The embodiment also provides a preparation method of the high-strength double-wave pipeline, which comprises the following steps:

(1) preparing a galvanized steel strip layer: starting the pipeline forming device and the bending device, wherein the pipeline forming device and the bending device respectively operate at the speed of 1:1.4, the galvanized steel strip layer is formed for the first time after sequentially passing through the vertical roller and the forming concave-convex roller, the galvanized steel strip layer is formed into a steel strip ring by a first bending group roller of the bending device, and the bending device adjusts a second bending group roller to polish the surface of the steel strip ring to be smooth and flat; then adjusting a third bending group of rollers to roll the steel belt ring into a circle with the same diameter as the target steel belt ring; the diameter of the steel belt ring is equal to the diameter of the target steel belt ring plus 30-50 mm; the adjusted circular steel belt ring is transmitted to a feeding device, a feeding motor is started, the relative position of a spacer bush on the feeding device is adjusted, and smooth operation of the formed steel belt ring on the feeding device is guaranteed;

(2) preparation before rolling: the feeding device feeds the end of the circular steel band ring into the space between the upper polytetrafluoroethylene pressure wheel and the lower polytetrafluoroethylene pressure wheel, the upper polytetrafluoroethylene pressure wheel presses downwards, the guide device of the roller is adjusted at the moment, and then the upper polytetrafluoroethylene pressure wheel and the lower polytetrafluoroethylene pressure wheel are loosened; adjusting the winding inclination angles of the four rollers to ensure that the central lines of the upper polytetrafluoroethylene pressure roller, the lower polytetrafluoroethylene pressure roller and the roller are consistent;

(3) formal preparation work: opening an oven, preheating a steel belt to 100 ℃, extruding an outer sheet and an inner sheet of the corrugated pipe, starting a hot air device at the same time, adjusting the rotation speed to a process value, and then pressing an upper polytetrafluoroethylene pressure roller and a lower polytetrafluoroethylene pressure roller; starting a forming motor, a bending motor and a feeding motor, and operating according to corresponding ratios; feeding the steel belt into an upper polytetrafluoroethylene pressure roller, synchronously moving the steel belt along with the inner sheet and the outer sheet, and then guiding the steel belt into a lower polytetrafluoroethylene pressure roller; opening the outer sheet blowing device, and adjusting the edge pressing wheel to ensure that the shapes of the outer sheet and the steel belt are the same;

(4) when the steel belt, the inner sheet and the outer sheet run to the pipe rack, the inner water spraying device is opened to spray water on the inner wall of the pipeline, and the left and right positions and the height of the pipe rack are adjusted according to the natural inclination angle position of the pipe so as to adapt to the requirements of the outer diameter sizes of the pipes with different specifications;

(5) cutting off the end face of the pipe before starting, measuring the inner and outer dimensions of the pipe, and adjusting the operating parameters of the inner sheet extruder and the outer sheet extruder according to the formulated standard of the pipe and the actual dimension condition of the pipe so as to achieve the qualified pipe; the bonding condition of the inner and outer sheets of the pipe is detected, and the heating devices outside the oven and the steel belt are properly adjusted, so that the bonding of the steel belt and the inner and outer sheets of the pipe is reliable.

In summary, in the high-strength dual-wave pipeline in the embodiment, the corrugated layer is provided with the inner layer polyethylene, the outer layer polyethylene, the mesh steel belt, the adhesive resin, the corrosion-resistant layer, the reinforcing belt and the heat shrinkage belt, the material layers are mutually matched, so that the ring stiffness of the corrugated pipeline is higher, the corrosion resistance of the corrugated pipeline is stronger, and meanwhile, the corrugated layer is set to be in an M-shaped dual-wave crest shape, so that the corrugated pipeline has better bearing performance and can be deeply buried underground for long-term use.

This description describes examples of embodiments of the invention, and is not intended to illustrate and describe all possible forms of the invention. It should be understood that the embodiments described in this specification can be implemented in many alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. It will be appreciated by persons skilled in the art that a plurality of features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to form embodiments which are not explicitly illustrated or described. The described combination of features provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present invention may be used as desired for particular applications or implementations.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.