Steel skeleton of multi-layer steel mesh structure and pipeline of steel skeleton

Abstract

The invention discloses a steel skeleton of a multi-layer steel mesh structure and a pipeline thereof, and relates to the technical field of steel skeleton pipelines, the steel skeleton comprises outer layer warps, inner layer warps are arranged on the inner sides of the outer layer warps, inner spiral wefts are welded to the outer sides of the inner layer warps, the outer sides of the inner spiral wefts are connected with the outer layer warps in a welded mode, and the outer layer warps are connected with the inner layer warps in a welded mode. The outer-layer warps, the outer spiral wefts, the inner spiral wefts and the inner-layer warps are alternately arranged and welded at the same time, a framework of the steel structure is more complex, when the pipeline is subjected to pressure, the pressure can be sequentially dispersed to each layer of steel structure, and therefore the pipeline is not prone to deformation. The spiral outer spiral wefts and the spiral inner spiral wefts are used for bearing in a dispersed mode, the overall strength is higher, radial deformation of the pipe wall is restrained, the pipeline fracture probability is reduced, the structures and the positions of the outer spiral wefts and the inner spiral wefts are changed according to needs, and deformation of the steel framework in the ultra-large-diameter pipeline can be better prevented.

Description

Technical Field

[0001] This invention relates to the field of steel-framed pipe technology, specifically to a multi-layered steel mesh structure steel frame and its pipe. Background Technology

[0002] Steel-reinforced pipe is a high-performance composite pipe made of high-strength steel as reinforcement and polyethylene as matrix through a composite process. It combines the strength of metal with the corrosion resistance of plastic. Its core structure is a steel wire mesh wound and welded as a skeleton, with high-density polyethylene covering the inner and outer layers, and is composited through a co-extrusion process.

[0003] However, during the manufacturing process of steel-framed pipes currently on the market, as the pipe diameter increases, the internal steel frame deforms due to its own strength and weight, resulting in lower ring stiffness and significantly weakened compressive strength, making it difficult to meet the internal and external pressure resistance requirements of use. Summary of the Invention

[0004] This invention provides a multi-layer steel mesh structure and its pipeline, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steel frame of a multi-layer steel mesh structure, comprising an outer layer of warp threads, an inner layer of warp threads disposed inside the outer layer of warp threads, an inner spiral weft thread welded to the outer side of the inner layer of warp threads, the outer side of the inner spiral weft thread being welded to the outer layer of warp threads, and an outer spiral weft thread being spirally welded to the outer side of the outer layer of warp threads; Both the outer and inner warp threads consist of multiple independent warp threads arranged along the circumference, and the diameter and density of the warp threads are selected according to the strength requirements.

[0006] According to the above technical solution, the outer warp and the inner warp are one-to-one and parallel to each other, and the outer and inner warp are spirally welded with steel wire mesh belts by welding equipment.

[0007] According to the above technical solution, there are no fewer than three outer spiral weft threads arranged in a double layer, wherein the inner layer has two outer spiral weft threads arranged in parallel, and the outer layer has a single outer spiral weft thread. The three outer spiral weft threads are welded together by high voltage and low current, and the three outer spiral weft threads form a three-strand triangular structure. The inner spiral weft yarn is no less than three and arranged in two layers, wherein the inner layer has two inner spiral weft yarns arranged side by side and the outer layer has a single inner spiral weft yarn. The three inner spiral weft yarns are welded together by high voltage and low current, and the three inner spiral weft yarns form a three-strand triangular structure. The outer spiral weft lines and the inner spiral weft lines are aligned and distributed.

[0008] According to the above technical solution, there are no fewer than three outer spiral weft threads arranged in a double layer, wherein the inner layer has two outer spiral weft threads arranged in parallel, and the outer layer has a single outer spiral weft thread. The three outer spiral weft threads are welded together by high voltage and low current, and the three outer spiral weft threads form a three-strand triangular structure. The inner spiral weft yarns are no less than five and arranged in two layers, with three inner spiral weft yarns arranged side by side in the inner layer and two inner spiral weft yarns in the outer layer. The five inner spiral weft yarns are welded together by high voltage and low current, forming a five-strand trapezoidal structure. The outer spiral weft lines and the inner spiral weft lines are aligned and distributed.

[0009] According to the above technical solution, the outer spiral weft yarn is arranged in a single spiral pattern; The inner spiral weft yarn is no less than three and arranged in two layers, wherein the inner layer has two inner spiral weft yarns arranged side by side and the outer layer has a single inner spiral weft yarn. The three inner spiral weft yarns are welded together by high voltage and low current, and the three inner spiral weft yarns form a three-strand triangular structure. The outer spiral weft lines and the inner spiral weft lines are aligned and distributed.

[0010] According to the above technical solution, the outer spiral weft yarn is arranged in a single spiral pattern; The inner spiral weft yarns are no less than five and arranged in two layers, with three inner spiral weft yarns arranged side by side in the inner layer and two inner spiral weft yarns in the outer layer. The five inner spiral weft yarns are welded together by high voltage and low current, forming a five-strand trapezoidal structure. The outer spiral weft lines and the inner spiral weft lines are aligned and distributed.

[0011] According to the above technical solution, there are no fewer than three outer spiral weft threads arranged in a double layer, wherein the inner layer has two outer spiral weft threads arranged in parallel, and the outer layer has a single outer spiral weft thread. The three outer spiral weft threads are welded together by high voltage and low current, and the three outer spiral weft threads form a three-strand triangular structure. The inner spiral weft yarn is no less than three and arranged in two layers, wherein the inner layer has two inner spiral weft yarns arranged side by side and the outer layer has a single inner spiral weft yarn. The three inner spiral weft yarns are welded together by high voltage and low current, and the three inner spiral weft yarns form a three-strand triangular structure. The outer spiral weft lines and the inner spiral weft lines are evenly and alternately distributed.

[0012] According to the above technical solution, a multi-layer steel mesh structure steel skeleton pipe, wherein the outer and inner warp wires are covered with a composite plastic pipe body by an extrusion equipment, and an adjustment docking assembly is installed at the end of the composite plastic pipe body, the adjustment docking assembly including an inner steel ring; An inner steel ring is embedded in the inner end of the composite plastic tube, and an outer plastic ring is sleeved on the outer end of the composite plastic tube. A black material annular reaction bag is fixedly sleeved on the middle of the outer side of the inner steel ring, and a white material annular reaction bag is adhered to the middle of the inner side of the outer plastic ring. Reaction holes are symmetrically opened on the outer side of the outer plastic ring corresponding to the white material annular reaction bag, and extrusion burrs are movably engaged inside the reaction holes. The outer side of the inner steel ring is welded with an external threaded connector, and the inner side of the outer plastic ring is welded with an external sliding plastic connector. One end of the external sliding plastic connector is bonded to the external threaded connector. The outer side of the external threaded connector is connected to both ends of the bidirectional internal threaded pipe by a thread. The external sliding plastic connector has a butt sealing groove corresponding to the bidirectional internal threaded pipe.

[0013] According to the above technical solution, a fastening groove is provided at one end of the external plastic ring near the composite plastic tube body. Deformation holes are evenly provided on the outer side of the fastening groove. A C-shaped retaining ring is movably embedded in the fastening groove. The two ends of the C-shaped retaining ring pass through a deformation hole, and the two ends of the C-shaped retaining ring are connected by fastening bolts. Anti-detachment clips are provided at the other three deformation holes corresponding to the C-shaped retaining ring.

[0014] According to the above technical solution, an end flow groove is uniformly opened on the inner side of the outer plastic ring near the fastening groove, and a middle flow groove is opened on the inner side of the outer sliding plastic tube near the white material annular reaction bag. The black material annular reaction bag is filled with diphenylmethane diisocyanate, and the white material annular reaction bag is filled with polyether polyol. The threads at both ends of the bidirectional internally threaded tube are turned in opposite directions. A central ring is fixedly sleeved in the middle of the bidirectional internally threaded tube, and a sealing groove is opened on the outer side of the bidirectional internally threaded tube corresponding to the flow groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The composite plastic pipe body is wrapped with outer warp, outer spiral weft, inner spiral weft, and inner warp to protect the internal steel structure from corrosion. At the same time, the outer warp, outer spiral weft, inner spiral weft, and inner warp are alternately arranged and welded, making the skeleton more complex and with more layers. The multi-layered steel skeleton has stronger pressure resistance. When the pipeline is under pressure, the pressure is distributed to each layer of steel structure in sequence, and the spiral outer and inner spiral wefts bear the pressure, resulting in higher overall strength, suppressing radial deformation of the pipe wall, and reducing the probability of pipeline rupture. The structure and position of the outer and inner spiral wefts can be changed according to needs, and can better prevent deformation of the internal steel skeleton of ultra-large diameter pipes, resulting in better performance. When welding the outer spiral weft and the inner spiral weft, if the outer spiral weft and the inner spiral weft are aligned and distributed, the outer spiral weft and the inner spiral weft are concentrated, and the strength of the weld is higher and it has ultra-high ring stiffness. If the outer and inner spiral weft lines are staggered, the distribution of the outer and inner spiral weft lines is more uniform and dispersed, resulting in better internal and external compressive strength. This makes it suitable for ultra-high pressure applications, allowing for the use of appropriate structures for different application requirements and thus a wider range of applications.

[0016] 2. An adjustable docking assembly is provided. The C-type retaining ring is fitted onto the end of the composite plastic pipe. Tighten the fastening bolts, and the C-type retaining ring tightens, preventing it from coming off and deforming. The rough C-type retaining ring also engages with the end of the composite plastic pipe. Rotate the central ring to rotate the bidirectional internal threaded pipe, and fit the empty inner steel ring and outer plastic ring onto the end of the other composite plastic pipe. Tighten the fastening bolts, and the C-type retaining ring tightens and fixes the pipe, completing the initial fixation of both ends. The extrusion punctures the black and white material annular reaction bags, causing the internal reactants to mix and form polyurethane foam. The foamed polyurethane flows out from the end and middle flow channels, sealing the gaps between the C-shaped retaining ring, the bidirectional internal threaded tube, the external threaded connector, and the external sliding plastic connector. This prevents the bidirectional internal threaded tube from loosening, resulting in a better seal and connection. This structure is also suitable for situations with large joint length errors, providing a better connection and ensuring connection strength.

[0017] In summary, by optimizing the internal and external structure of the steel-reinforced composite pipe, the multi-layered steel skeleton exhibits stronger compressive strength. Furthermore, by altering the structure and position of the outer and inner spiral weft threads, its ring stiffness and compressive strength are changed, resulting in higher overall strength. Due to this higher overall strength, the connection length is difficult to control during butt jointing. Adjustable butt joint components, however, are suitable for different butt joint lengths, enabling rapid connection and sealing. Internal reinforcement with an inner steel ring ensures both connection strength and sealing effectiveness, resulting in better overall pipe strength and allowing ultra-large diameter pipes to better perform their intended function. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the external spiral weft installation structure of the present invention; Figure 3 This is a schematic diagram of the inner spiral weft installation structure of the present invention; Figure 4 This is a first schematic diagram of Embodiment 4 of the present invention; Figure 5 This is a second schematic diagram of Embodiment 4 of the present invention; Figure 6This is a first schematic diagram of Embodiment 5 of the present invention; Figure 7 This is a second schematic diagram of Embodiment 5 of the present invention; Figure 8 This is a first schematic diagram of Embodiment 6 of the present invention; Figure 9 This is a second schematic diagram of Embodiment 6 of the present invention; Figure 10 This is a schematic diagram of the structure of the present invention, in which the outer spiral weft lines and the inner spiral weft lines intersect; Figure 11 This is a cross-sectional view of the structure of the present invention, in which the outer spiral weft lines and the inner spiral weft lines intersect. Figure 12 This is a schematic diagram of the structure of the adjustment docking component of the present invention; Figure 13 This is a schematic diagram of the installation structure of the external plastic ring of the present invention; Figure 14 This is a schematic diagram of the installation structure of the external sliding plastic tube of the present invention; Figure 15 This is the present invention. Figure 14 A schematic diagram of the structure of region A; Labels in the diagram: 1. Outer warp; 2. Outer spiral weft; 3. Inner spiral weft; 4. Inner warp; 5. Composite plastic tube body; 6. Adjustable docking assembly; 601. Inner steel ring; 602. Outer plastic ring; 603. Black material annular reaction bag; 604. White material annular reaction bag; 605. Reaction hole; 606. Extrusion burr; 607. Fastening groove; 608. Deformation hole; 609. C-type retaining ring; 610. Fastening bolt; 611. Anti-detachment clip; 612. External threaded connector; 613. External sliding plastic connector; 614. Bidirectional internal threaded pipe; 615. Docking sealing groove; 616. End flow groove; 617. Middle flow groove; 618. Center ring; 619. Sealing groove. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example 1: like Figure 1 , 3 As shown, the present invention provides a technical solution: a steel frame of a multi-layer steel mesh structure, including an outer layer warp 1, an inner layer warp 4 disposed inside the outer layer warp 1, an inner spiral weft 3 welded to the outside of the inner layer warp 4, the outer side of the inner spiral weft 3 being welded to the outer layer warp 1, and an outer spiral weft 2 spirally welded to the outside of the outer layer warp 1. Both the outer warp 1 and the inner warp 4 are composed of multiple independent warps arranged along the circumference, and the diameter and arrangement density of the warps are selected according to the strength requirements.

[0022] Example 2: like Figure 2 As shown, the present invention provides a technical solution in which the outer warp 1 and the inner warp 4 correspond one-to-one and are parallel to each other. The outer warp 1 and the inner warp 4 are both spirally welded with steel wire mesh belts by welding equipment.

[0023] Example 3: like Figure 2-3 As shown, the present invention provides a technical solution in which there are no fewer than three outer spiral weft threads 2 arranged in a double layer, wherein the inner layer has two outer spiral weft threads 2 arranged in parallel, and the outer layer has a single outer spiral weft thread 2. The three outer spiral weft threads 2 are welded together by high voltage and low current, and the three outer spiral weft threads 2 form a three-strand triangular structure. There are no fewer than three inner spiral weft threads 3 arranged in a double layer. The inner layer has two inner spiral weft threads 3 arranged in parallel, and the outer layer has a single inner spiral weft thread 3. The three inner spiral weft threads 3 are welded together by high voltage and low current, and the three inner spiral weft threads 3 form a three-strand triangular structure. The outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0024] Example 4: like Figure 4-5 As shown, the present invention provides a technical solution in which there are no fewer than three outer spiral weft threads 2 arranged in a double layer, wherein the inner layer has two outer spiral weft threads 2 arranged in parallel, and the outer layer has a single outer spiral weft thread 2. The three outer spiral weft threads 2 are welded together by high voltage and low current, and the three outer spiral weft threads 2 form a three-strand triangular structure. There are no fewer than five inner spiral weft threads 3 arranged in a double layer. The inner layer has three inner spiral weft threads 3 arranged in parallel, and the outer layer has two inner spiral weft threads 3. The five inner spiral weft threads 3 are welded together by high voltage and low current, and the five inner spiral weft threads 3 form a five-strand trapezoidal structure. The outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0025] Example 5: like Figure 6-7 As shown, the present invention provides a technical solution in which the outer spiral weft yarn 2 is arranged in a single spiral. There are no fewer than three inner spiral weft threads 3 arranged in a double layer. The inner layer has two inner spiral weft threads 3 arranged in parallel, and the outer layer has a single inner spiral weft thread 3. The three inner spiral weft threads 3 are welded together by high voltage and low current, and the three inner spiral weft threads 3 form a three-strand triangular structure. The outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0026] Example 6: like Figure 8-9 As shown, the present invention provides a technical solution in which the outer spiral weft yarn 2 is arranged in a single spiral. There are no fewer than five inner spiral weft threads 3 arranged in a double layer. The inner layer has three inner spiral weft threads 3 arranged in parallel, and the outer layer has two inner spiral weft threads 3. The five inner spiral weft threads 3 are welded together by high voltage and low current, and the five inner spiral weft threads 3 form a five-strand trapezoidal structure. The outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0027] Example 7: like Figure 2-3 As shown, there are two outer spiral weft threads 2, which are arranged side by side and welded together by high voltage and low current. There are no fewer than three inner spiral weft threads 3 arranged in a double layer. The inner layer has two inner spiral weft threads 3 arranged in parallel, and the outer layer has a single inner spiral weft thread 3. The three inner spiral weft threads 3 are welded together by high voltage and low current, and the three inner spiral weft threads 3 form a three-strand triangular structure. The outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0028] Example 8: like Figure 10-11 As shown, the present invention provides a technical solution in which there are no fewer than three outer spiral weft threads 2 arranged in a double layer, wherein the inner layer has two outer spiral weft threads 2 arranged in parallel, and the outer layer has a single outer spiral weft thread 2. The three outer spiral weft threads 2 are welded together by high voltage and low current, and the three outer spiral weft threads 2 form a three-strand triangular structure. There are no fewer than three inner spiral weft threads 3 arranged in a double layer. The inner layer has two inner spiral weft threads 3 arranged in parallel, and the outer layer has a single inner spiral weft thread 3. The three inner spiral weft threads 3 are welded together by high voltage and low current, and the three inner spiral weft threads 3 form a three-strand triangular structure. The outer spiral weft 2 and the inner spiral weft 3 are evenly interspersed. The outer layer warp 1 and the inner layer warp 4 are made of threaded steel. The inner spiral weft 3 is preferred to be made of threaded steel, and the outer spiral weft 2 is a secondary choice of round steel.

[0029] Example 9: like Figure 12-15 As shown, the present invention provides a technical solution: a multi-layer steel mesh structure steel skeleton pipe. According to any one of claims 1-6, the pipe is made of a multi-layer steel mesh structure steel skeleton, with the outer layer warp 1 and inner layer warp 4 covered by an extrusion device with a composite plastic pipe body 5. An adjustment docking assembly 6 is installed at the end of the composite plastic pipe body 5. The adjustment docking assembly 6 includes an inner steel ring 601, an outer plastic ring 602, a black material annular reaction bag 603, a white material annular reaction bag 604, a reaction hole 605, an extrusion burr 606, a fastening groove 607, a deformation hole 608, a C-shaped retaining ring 609, a fastening bolt 610, an anti-detachment retainer 611, an external threaded connector 612, an external sliding plastic connector 613, a bidirectional internal threaded pipe 614, a docking sealing groove 615, an end flow groove 616, a middle flow groove 617, a center ring 618, and a sealing groove 619. An inner steel ring 601 is embedded in the inner end of the composite plastic tube 5, and an outer plastic ring 602 is sleeved on the outer end of the composite plastic tube 5. A black material annular reaction bag 603 is fixedly sleeved on the middle of the outer side of the inner steel ring 601, and a white material annular reaction bag 604 is bonded to the middle of the inner side of the outer plastic ring 602. A reaction hole 605 is symmetrically opened on the outer side of the outer plastic ring 602 corresponding to the white material annular reaction bag 604. An extrusion spur 606 is movably engaged inside the reaction hole 605. An external plastic ring 602 has a fastening groove 607 at one end near the composite plastic tube 5. Deformation holes 608 are evenly distributed on the outer side of the fastening groove 607. A C-shaped retaining ring 609 is movably embedded in the fastening groove. Both ends of the C-shaped retaining ring 609 pass through one deformation hole 608, and both ends of the C-shaped retaining ring 609 are connected by fastening bolts 610. Anti-detachment clips 611 are provided at the other three deformation holes 608 corresponding to the C-shaped retaining ring 609. An external threaded connector 612 is welded to the outside of the inner steel ring 601. An external sliding plastic connector 613 is welded to the inside of the outer plastic ring 602. One end of the external sliding plastic connector 613 is bonded to the external threaded connector 612. The two ends of the bidirectional internal threaded tube 614 are connected to the outside of the external threaded connector 612 by threads. A butt sealing groove 615 is opened on the external sliding plastic connector 613 corresponding to the bidirectional internal threaded tube 614. An end flow groove 616 is evenly opened on the inside of the outer plastic ring 602 near the tight groove 607. A middle flow groove 617 is opened on the inside of the external sliding plastic connector 613 near the white material annular reaction bag 604. The threads at both ends of the bidirectional internal threaded tube 614 have opposite directions. A central ring 618 is fixedly sleeved in the middle of the bidirectional internal threaded tube 614. A sealing groove 619 is opened on the outside of the bidirectional internal threaded tube 614 corresponding to the middle flow groove 617 to improve the sealing performance of the connection. The black ring-shaped reaction bag 603 is filled with diphenylmethane diisocyanate, while the white ring-shaped reaction bag 604 is filled with polyether polyol, which facilitates the flow of the foamed polyurethane after the reaction to the gaps.

[0030] The working principle and usage process of this invention: In the use of multi-layer steel mesh structure steel skeleton pipe, the outer warp 1, outer spiral weft 2, inner spiral weft 3 and inner warp 4 are wrapped by the composite plastic pipe body 5 to protect the internal steel structure and prevent it from corrosion. At the same time, the outer warp 1, outer spiral weft 2, inner spiral weft 3 and inner warp 4 are alternately arranged and welded, making the skeleton more complex and having more layers. The multi-layer steel skeleton has stronger pressure resistance. When the pipe is under pressure, the pressure will be distributed to each layer of steel structure in sequence, and the spiral outer spiral weft 2 and inner spiral weft 3 will distribute the pressure, resulting in higher overall strength, inhibiting radial deformation of the pipe wall, reducing the probability of pipe rupture. The structure and position of the outer spiral weft 2 and inner spiral weft 3 can be changed according to needs, and can better prevent deformation of the steel skeleton inside the pipe with ultra-large diameter, resulting in better performance. During the process of the inner spiral weft 3 changing from a three-strand triangle to a five-strand trapezoid, the inner spiral weft 3 is welded to the outer warp 1 and the inner warp 4 respectively. The number of welding points increases, the strength is higher, and the support effect is better, but the weight and cost also increase. The selection is based on actual needs. The process of the outer spiral weft 2 changing from a single strand to a three-strand triangle is similar. When welding the outer spiral weft 2 and the inner spiral weft 3, if the outer spiral weft 2 and the inner spiral weft 3 are aligned and distributed, and the outer spiral weft 2 and the inner spiral weft 3 are concentrated, the strength of the weld is higher and it has ultra-high ring stiffness. If the outer spiral weft line 2 and the inner spiral weft line 3 are staggered, the outer spiral weft line 2 and the inner spiral weft line 3 are more evenly distributed, and their internal and external compressive strength is better. They are suitable for ultra-high pressure applications. Different structures can be used for different application requirements, and the application range is wider. When pipes need to be connected, after cleaning the debris from the end of the composite plastic pipe body 5 and initially grinding it, align the inner steel ring 601 and the outer plastic ring 602, loosen the fastening bolt 610, and fit the C-shaped retaining ring 609 onto the end of the composite plastic pipe body 5 until the end of the composite plastic pipe body 5 is in contact with the black material annular reaction bag 603 and the white material annular reaction bag 604. Tighten the fastening bolt 610, tighten the C-shaped retaining ring 609, and prevent the retaining ring 611 from deforming and cooperate with the rough C-shaped retaining ring 609 to clamp the end of the composite plastic pipe body 5, thus completing the initial fixation of one end; Next, align the end of another composite plastic tube 5 with the empty inner steel ring 601 and outer plastic ring 602, rotate the center ring 618 to drive the bidirectional internal thread tube 614 to rotate, and the bidirectional internal thread tube 614 pushes the external thread tube 612 to move, so that the empty inner steel ring 601 and outer plastic ring 602 are fitted onto the end of another composite plastic tube 5, tighten the fastening bolt 610, and tighten the C-type retaining ring 609 to complete the initial fixation of both ends; Pressing the extrusion spur 606 inside the reaction hole 605 punctures the black material annular reaction bag 603 and the white material annular reaction bag 604, causing the internal reactants to mix and form polyurethane foam material. The internal pressure of the original black material annular reaction bag 603 and white material annular reaction bag 604 increases, causing the foamed polyurethane to flow out from the end flow channel 616 and the middle flow channel 617. The foamed polyurethane flowing out of the end flow channel 616 enters the sealing groove 607, ensuring a tight connection between the outer plastic ring 602 and the composite plastic tube 5 while protecting the C-type retaining ring 609, wrapping around its outer side to slow corrosion. The foamed polyurethane flowing out of the middle flow channel 617 flows along the sealing groove 619, sealing the gap between the bidirectional internal threaded tube 614, the external threaded connector 612, and the external sliding plastic connector 613, preventing the bidirectional internal threaded tube 614 from loosening. This results in a better sealing effect and a better connection. Furthermore, this structure is suitable for situations with large joint length errors, providing a better connection and ensuring connection strength.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer steel mesh structure with a steel frame, comprising an outer layer of warp threads (1), characterized in that: An inner warp (4) is provided on the inner side of the outer warp (1), and an inner spiral weft (3) is welded to the outer side of the inner warp (4). The outer side of the inner spiral weft (3) is welded to the outer warp (1), and an outer spiral weft (2) is spirally welded to the outer side of the outer warp (1). The outer warp (1) and inner warp (4) are both composed of multiple independent warp lines arranged along the circumference, and the diameter and arrangement density of the warp lines are selected according to the strength requirements.

2. The steel frame of a multi-layer steel mesh structure according to claim 1, characterized in that, The outer warp (1) and the inner warp (4) are one-to-one and parallel to each other. The outer warp (1) and the inner warp (4) are spirally welded with wire mesh belts by welding equipment.

3. The steel frame of a multi-layer steel mesh structure according to any one of claims 1-2, characterized in that, The outer spiral weft (2) has no less than three strands and is arranged in a double layer. The inner layer has two outer spiral wefts (2) arranged in parallel, and the outer layer has a single outer spiral weft (2). The three outer spiral wefts (2) are welded together by high voltage and low current, and the three outer spiral wefts (2) form a three-strand triangular structure. The inner spiral weft (3) has no less than three and is arranged in two layers. The inner layer has two inner spiral wefts (3) arranged in parallel, and the outer layer has a single inner spiral weft (3). The three inner spiral wefts (3) are welded together by high voltage and low current, and the three inner spiral wefts (3) form a three-strand triangular structure. The outer spiral weft line (2) and the inner spiral weft line (3) are aligned and distributed.

4. The steel frame of a multi-layer steel mesh structure according to any one of claims 1-2, characterized in that, The outer spiral weft (2) has no less than three strands and is arranged in a double layer. The inner layer has two outer spiral wefts (2) arranged in parallel, and the outer layer has a single outer spiral weft (2). The three outer spiral wefts (2) are welded together by high voltage and low current, and the three outer spiral wefts (2) form a three-strand triangular structure. The inner spiral weft (3) has no less than five strands and is arranged in two layers. The inner layer has three inner spiral wefts (3) arranged in parallel, and the outer layer has two inner spiral wefts (3). The five inner spiral wefts (3) are welded together by high voltage and low current, and the five inner spiral wefts (3) form a five-strand trapezoidal structure. The outer spiral weft line (2) and the inner spiral weft line (3) are aligned and distributed.

5. The steel frame of a multi-layer steel mesh structure according to any one of claims 1-2, characterized in that, The outer spiral weft (2) is arranged in a single spiral; The inner spiral weft (3) has no less than three and is arranged in two layers. The inner layer has two inner spiral wefts (3) arranged in parallel, and the outer layer has a single inner spiral weft (3). The three inner spiral wefts (3) are welded together by high voltage and low current, and the three inner spiral wefts (3) form a three-strand triangular structure. The outer spiral weft line (2) and the inner spiral weft line (3) are aligned and distributed.

6. The steel frame of a multi-layer steel mesh structure according to any one of claims 1-2, characterized in that, The outer spiral weft (2) is arranged in a single spiral; The inner spiral weft (3) has no less than five strands and is arranged in two layers. The inner layer has three inner spiral wefts (3) arranged in parallel, and the outer layer has two inner spiral wefts (3). The five inner spiral wefts (3) are welded together by high voltage and low current, and the five inner spiral wefts (3) form a five-strand trapezoidal structure. The outer spiral weft line (2) and the inner spiral weft line (3) are aligned and distributed.

7. The steel frame of a multi-layer steel mesh structure according to any one of claims 1-2, characterized in that, The outer spiral weft (2) has no less than three strands and is arranged in a double layer. The inner layer has two outer spiral wefts (2) arranged in parallel, and the outer layer has a single outer spiral weft (2). The three outer spiral wefts (2) are welded together by high voltage and low current, and the three outer spiral wefts (2) form a three-strand triangular structure. The inner spiral weft (3) has no less than three and is arranged in two layers. The inner layer has two inner spiral wefts (3) arranged in parallel, and the outer layer has a single inner spiral weft (3). The three inner spiral wefts (3) are welded together by high voltage and low current, and the three inner spiral wefts (3) form a three-strand triangular structure. The outer spiral weft lines (2) and the inner spiral weft lines (3) are evenly interspersed.

8. A multi-layer steel mesh structure steel skeleton pipe, the pipe made of a multi-layer steel mesh structure steel skeleton according to any one of claims 1-7, characterized in that, The outer warp (1) and inner warp (4) are covered with a composite plastic tube (5) by an extrusion device. An adjustment docking assembly (6) is installed at the end of the composite plastic tube (5). The adjustment docking assembly (6) includes an inner steel ring (601). An inner steel ring (601) is embedded in the inner end of the composite plastic tube (5), and an outer plastic ring (602) is sleeved on the outer end of the composite plastic tube (5). A black material annular reaction bag (603) is fixedly sleeved on the middle of the outer side of the inner steel ring (601), and a white material annular reaction bag (604) is bonded to the middle of the inner side of the outer plastic ring (602). A reaction hole (605) is symmetrically opened on the outer side of the outer plastic ring (602) corresponding to the white material annular reaction bag (604). An extrusion burr (606) is movably engaged inside the reaction hole (605). The inner steel ring (601) is welded with an external threaded connector (612) on the outside, and the outer plastic ring (602) is welded with an external sliding plastic connector (613) on the inside. One end of the external sliding plastic connector (613) is bonded to the external threaded connector (612). The two ends of the bidirectional internal threaded pipe (614) are connected by threads on the outside of the external threaded connector (612). The external sliding plastic connector (613) is provided with a butt sealing groove (615) corresponding to the bidirectional internal threaded pipe (614).

9. The steel frame of a multi-layer steel mesh structure according to claim 8, characterized in that, The outer plastic ring (602) has a fastening groove (607) at one end near the composite plastic tube (5). Deformation holes (608) are evenly distributed on the outer side of the fastening groove (607). A C-shaped retaining ring (609) is movably embedded in the fastening groove. Both ends of the C-shaped retaining ring (609) pass through a deformation hole (608), and both ends of the C-shaped retaining ring (609) are connected by fastening bolts (610). Anti-detachment clips (611) are provided at the other three deformation holes (608) of the C-shaped retaining ring (609).

10. The steel frame of a multi-layer steel mesh structure according to claim 9, characterized in that, The outer plastic ring (602) has an end flow groove (616) evenly opened on the inner side near the fastening groove (607), and the outer sliding plastic pipe (613) has a middle flow groove (617) opened on the inner side near the white material annular reaction bag (604). The black material annular reaction bag (603) is filled with diphenylmethane diisocyanate, and the white material annular reaction bag (604) is filled with polyether polyol. The threads at both ends of the bidirectional internal threaded tube (614) are turned in opposite directions. A central ring (618) is fixedly sleeved in the middle of the bidirectional internal threaded tube (614). A sealing groove (619) is opened on the outside of the bidirectional internal threaded tube (614) corresponding to the flow groove (617).

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