A method for laying flexible intelligent hydrogen transmission pipelines that enables rapid deployment.

Abstract

This invention relates to the technical field, specifically a method for laying a flexible, intelligent hydrogen transmission pipeline that enables rapid installation. The pipeline includes a polyethylene pipe, the outer side of which is covered with a second adhesive layer. The polyethylene pipe and the second adhesive layer are bonded together by a fiberglass tape reinforcing layer. The outer side of the second adhesive layer is covered with a first adhesive layer, and the second adhesive layer and the first adhesive layer are bonded together by an aluminum foil layer. The first adhesive layer is then covered with a polyethylene pipe protective sleeve. This invention avoids secondary excavation of the pipeline, does not damage existing roads and facilities, does not harm urban green spaces, avoids road congestion caused by construction, utilizes existing or abandoned pipelines, allows for rapid installation, requires fewer personnel, is unaffected by weather, and shortens the construction period.

Description

Technical Field

[0001] This invention relates to the field of technology, specifically to a method for laying flexible intelligent hydrogen transmission pipelines that enables rapid installation. Background Technology

[0002] The construction of hydrogen transmission pipelines is difficult due to the need to pay attention to underground water, electricity, and communication systems. The construction period is long and road closures are required, which can paralyze the entire transportation route.

[0003] Earthwork excavation is costly. Considering winter insulation, the deeper the burial depth for the same width and length, the more earthwork is required, resulting in higher costs and a larger proportion of the total project cost. Furthermore, the need to frequently avoid obstacles leads to even more waste.

[0004] Safety is a major concern in hydrogen transportation. Due to differences in gas properties, pipeline material characteristics, hydrogen blending ratio, and external environment, hydrogen entering pipelines is prone to risks such as hydrogen embrittlement, permeation, and leakage. Studies have shown that factors such as hydrogen pressure, purity, ambient temperature, pipeline strength level, deformation rate, and microstructure all affect the degree of damage to pipelines caused by hydrogen. For these reasons, it is difficult to achieve a long service life for ordinary pipelines.

[0005] Inventing a hydrogen pipeline with high safety, long life, high pressure resistance, and leakage alarm function, as well as how to achieve rapid laying for end customers in the "last mile" and reduce laying costs, have been long-standing challenges. Therefore, those skilled in the art have provided a laying method for a flexible intelligent hydrogen pipeline that can be laid quickly to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a method for laying flexible intelligent hydrogen pipelines that can be laid quickly, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a method for laying a flexible intelligent hydrogen transmission pipeline that enables rapid installation, the hydrogen transmission pipeline comprising a polyethylene pipe, the outer side of which is covered with a second adhesive layer, and the polyethylene pipe and the second adhesive layer are bonded together by a fiberglass tape wrapping reinforcement layer, the outer side of the second adhesive layer is covered with a first adhesive layer, and the second adhesive layer and the first adhesive layer are bonded together by an aluminum foil layer, and the outer side of the first adhesive layer is covered with a polyethylene pipe protective sleeve;

[0008] The aforementioned rapid laying method for hydrogen pipelines includes the following specific steps:

[0009] S1: Transport the pipe unwinding frame with the hydrogen pipeline wrapped around it to the construction site, remove the binding tape on the hydrogen pipeline and locate the end of the hydrogen pipeline.

[0010] S2: Connect the end of the hydrogen pipeline to the tail end of the pipe-guiding robot using a dedicated connector, excavate the backfill layer to expose the end of the foundation pipeline, place the pipe-guiding robot at the end of the foundation pipeline, and control the movement trajectory of the pipe-guiding robot with a remote control so that the pipe-guiding robot can move from one end of the foundation pipeline to the other end or a designated position.

[0011] S3: When a basic pipeline valve is encountered in the basic pipeline, enter through the inspection well to find the basic pipeline valve, and install a pipeline tee on each side of the basic pipeline valve to lead out the hydrogen transmission pipeline. The hydrogen transmission pipeline located between the two pipeline tees is cut off and connected by a joint to facilitate the connection of ultra-long pipelines, as well as the subsequent maintenance and inspection of the pipeline.

[0012] S4: After the pipe-leading robot reaches the predetermined position via remote control, it first separates the special connector, and then continues to drag the hydrogen pipeline until the length required for the next construction connection is met. At this point, the other end of the hydrogen pipeline is cut off by the cutting equipment.

[0013] S5: Install a wireless transmission module inside the inspection well, and drill holes in the basic pipeline inside the inspection well to install a hydrogen leakage sensor electrically connected to the wireless transmission module. The wireless transmission module wirelessly transmits to an external control terminal to transmit the hydrogen content detected by the hydrogen leakage sensor to the control terminal, monitor the status of the pipeline in real time, set a hydrogen content threshold, and automatically alarm once the hydrogen content exceeds the standard.

[0014] S6: Install a remotely controllable smart valve at the end of the hydrogen pipeline to enable daily remote automatic opening and closing.

[0015] As a further aspect of the present invention: the intelligent valve is a 24V DC intelligent valve with low signal delay, and the intelligent valve has a diameter of 200mm, closing in just 5 seconds, exhibiting rapid response.

[0016] As a further embodiment of the present invention: the basic pipeline is a DN300 abandoned heating pipeline remaining in the backfill layer.

[0017] As a further embodiment of the present invention: the maximum traction force of the pipe-guiding robot is 200N, and the maximum speed of the pipe-guiding robot traveling in the basic pipeline is controlled at 5m / min.

[0018] As a further aspect of the present invention, the maximum pressure of the hydrogen transport pipeline is designed to be 4.0 MPa.

[0019] As a further embodiment of the present invention: the wireless transmission module adopts a GPRS wireless data transmission module, which has unlimited transmission distance, large data transmission volume, and is safe and stable, and is usually used for remote data collection and transmission.

[0020] As a further embodiment of the present invention: the dedicated connector includes a connecting housing, an inner cylinder is threadedly connected to the center of one end of the connecting housing, and arc-shaped clamps are movably connected to the upper and lower sides of the inner cylinder on one side of the connecting housing. A positive and negative screw is rotatably connected inside the connecting housing, and a knob is fixed through the connecting housing at the upper end of the positive and negative screw. The positive and negative thread sections of the positive and negative screw inside the connecting housing are threadedly connected to matching threaded sleeves. A connecting rod is fixed to one end of each of the two threaded sleeves, and the other ends of the two connecting rods are respectively fixed to the two arc-shaped clamps through the connecting housing. A self-locking hook is rotatably connected to the other end of the connecting housing.

[0021] As a further embodiment of the present invention: a hanging ring is fixed at the tail end of the tube guiding robot at the position corresponding to the self-locking hook, and the self-locking hook is hung on the hanging ring.

[0022] As a further embodiment of the present invention: bolts are fixed on both sides of one end of the bottom arc-shaped clamping plate, and fixing rings are fixed on both sides of the upper arc-shaped clamping plate at the positions corresponding to the bolts for the bolts to pass through. A nut that is threaded to the end of the bolt is rotatably connected above the fixing ring.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the present invention avoids secondary excavation of pipelines, does not need to damage the original roads and facilities, will not damage the city's greenery, and avoids road congestion caused by construction.

[0024] By utilizing existing and abandoned pipelines, the laying speed is fast, requires fewer personnel, is not affected by the weather, shortens the construction period, and solves the problem of high difficulty and high investment cost in laying the "last mile" of hydrogen transportation.

[0025] With the dual clamping of the arc-shaped clamping plate and the inner tube, the special connector has a more stable clamping effect and is less prone to clamping deformation.

[0026] The hydrogen transport pipeline adopts a structure combining polyethylene, fiberglass tape, and aluminum foil, which effectively solves the problem of hydrogen embrittlement and meets the requirements of high pressure, long service life, high pressure resistance, and high safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a flexible intelligent hydrogen pipeline that can be rapidly deployed.

[0028] Figure 2This diagram illustrates a method for laying a flexible, intelligent hydrogen pipeline that enables rapid installation.

[0029] Figure 3 This is a schematic diagram of intelligent control in a method for laying a flexible intelligent hydrogen pipeline that enables rapid installation.

[0030] Figure 4 for Figure 1 A magnified structural diagram of point A in the middle.

[0031] In the diagram: 1. Intelligent hydrogen transmission pipeline; 1-1. Polyethylene pipe protective sleeve; 1-2. First adhesive layer; 1-3. Aluminum foil layer; 1-4. Second adhesive layer; 1-5. Fiberglass tape reinforcing layer; 1-6. Polyethylene pipe; 2. Basic pipeline; 3. Basic pipeline valve; 4. Joint; 5. Inspection well; 6. Pipeline tee; 7. Pipeline unwinding frame; 8. Pipeline guiding robot; 9. Backfill layer; 10. Hydrogen leakage sensor; 11. Intelligent valve; 12. Control terminal; 13. Self-locking hook; 14. Positive and negative screws; 15. Hanging ring; 16. Connecting shell; 17. Knob; 18. Nut; 19. Fixing ring; 20. Inner cylinder; 21. Bolt; 22. Arc-shaped clamp; 23. Connecting rod; 24. Screw sleeve. Detailed Implementation

[0032] Please see Figures 1-4 In this embodiment of the invention, a method for laying a flexible intelligent hydrogen transmission pipeline that enables rapid installation is provided. The hydrogen transmission pipeline 1 includes a polyethylene pipe 1-6, the outer side of which is covered with a second adhesive layer 1-4, and the polyethylene pipe 1-6 and the second adhesive layer 1-4 are bonded together by a fiberglass tape wrapping reinforcement layer 1-5. The outer side of the second adhesive layer 1-4 is covered with a first adhesive layer 1-2, and the second adhesive layer 1-4 and the first adhesive layer 1-2 are bonded together by an aluminum foil layer 1-3. The outer side of the first adhesive layer 1-2 is covered with a polyethylene pipe protective sleeve 1-1.

[0033] The rapid laying method for the aforementioned hydrogen pipeline 1 includes the following specific steps:

[0034] S1: Transport the pipe unwinding frame 7 with the hydrogen pipeline 1 wrapped around it to the construction site, remove the binding tape on the hydrogen pipeline 1 and find the end of the hydrogen pipeline 1.

[0035] S2: Connect the end of the hydrogen pipeline 1 to the tail end of the pipe-guiding robot 8 through a special connector, dig out the backfill layer 9 to expose the end of the foundation pipeline 2, place the pipe-guiding robot 8 at the end of the foundation pipeline 2, and control the movement trajectory of the pipe-guiding robot 8 through a remote control so that the pipe-guiding robot 8 can move from one end of the foundation pipeline 2 to the other end or a designated position.

[0036] S3: When the basic pipeline 2 encounters the basic pipeline valve 3, enter from the inspection well 5 to find the basic pipeline valve 3. Install a pipeline tee 6 on each side of the basic pipeline valve 3 to lead out the hydrogen transmission pipeline 1. The hydrogen transmission pipeline 1 located between the two pipeline tees 6 is cut off and connected through the joint 4 to facilitate the connection of the ultra-long pipeline, as well as the subsequent maintenance and inspection of the pipeline.

[0037] S4: After the pipe-leading robot 8 reaches the predetermined position via remote control, it first separates the special connector, and then continues to drag the hydrogen pipeline 1 until the length required for the next construction connection is met. At this time, the other end of the hydrogen pipeline 1 is cut off by the cutting equipment.

[0038] S5: Install a wireless transmission module inside the inspection well 5, and drill a hole in the basic pipeline 2 inside the inspection well 5 to install a hydrogen leakage sensor 10 electrically connected to the wireless transmission module. The wireless transmission module wirelessly transmits to the external control terminal 12 to transmit the hydrogen content detected by the hydrogen leakage sensor 10 to the control terminal 12, monitor the status of the pipeline in real time, set the hydrogen content threshold, and automatically alarm once the hydrogen content exceeds the standard; other sensors as needed can also be installed.

[0039] S6: Install a remotely controllable smart valve 11 at the end of the hydrogen pipeline 1 to enable daily remote automatic opening and closing.

[0040] Furthermore, the intelligent valve 11 adopts a 24V DC intelligent valve with low signal delay, and the intelligent valve 11 has a diameter of 200mm, closing in only 5 seconds, which has the characteristic of rapid response.

[0041] Furthermore, the basic pipeline 2 is a DN300 abandoned heating pipeline remaining in the backfill layer 9.

[0042] Furthermore, the maximum traction force of the pipe-guiding robot 8 is 200N, and the maximum speed of the pipe-guiding robot 8 traveling within the basic pipe 2 is controlled at 5m / min.

[0043] Furthermore, the maximum pressure of hydrogen pipeline 1 is designed to be 4.0 MPa.

[0044] Furthermore, the wireless transmission module adopts a GPRS wireless data transmission module, which has no limit on transmission distance, large data transmission volume, and is safe and stable. It is usually used for remote data collection and transmission.

[0045] Furthermore, the dedicated connector includes a connecting housing 16, with an inner cylinder 20 threadedly connected to the center of one end of the connecting housing 16. Arc-shaped clamping plates 22 are movably connected to both the upper and lower sides of the inner cylinder 20 on one side of the connecting housing 16. A positive and negative screw 14 is rotatably connected inside the connecting housing 16. A knob 17 is fixed to the upper end of the positive and negative screw 14, penetrating the connecting housing 16. Matching threaded sleeves 24 are threaded to the positive and negative thread sections of the positive and negative screw 14 inside the connecting housing 16. A connecting rod 23 is fixed to one end of each of the two threaded sleeves 24. The other ends of the two connecting rods 23 penetrate the connecting housing 16 and are respectively fixed to the two arc-shaped clamping plates 22. A self-locking hook 13 is rotatably connected to the other end of the connecting housing 16. A hanging ring 15 is fixed to the tail end of the tube-guiding robot 8 at the position corresponding to the self-locking hook 13. The self-locking hook 13 is hung on the hanging ring 15. Bolts 21 are fixed to both sides of one end of the bottom arc-shaped clamping plate 22. On both sides of the upper arc-shaped clamping plate 22, corresponding to the position of the bolt 21, there are fixing rings 19 for the bolt to pass through. The upper part of the fixing ring 19 is rotatably connected to the nut 18 that is threaded to the end of the bolt 21. When connecting, the inner cylinder 20 is inserted into the hydrogen transmission pipeline 1. The inner cylinder 20 is connected to the connecting shell 16 by threads, which makes it easy to replace the inner sleeve 20 with different diameters and to adapt to the hydrogen transmission pipeline 1 with different pipe diameters. When the inner cylinder 20 is inserted into the hydrogen transmission pipeline 1, the knob 17 is turned to drive the positive and negative screws 14 to rotate. Due to the characteristics of the screw sleeves, the two screw sleeves 24 will make relative displacement on the positive and negative screws 14. During the relative displacement, the connecting rod 23 drives the two arc-shaped clamping plates 22 to clamp the hydrogen transmission pipeline 1. Under the double clamping of the arc-shaped clamping plates 22 and the inner cylinder 20, the clamping effect is more stable and the problem of clamping deformation is not easy to occur. After clamping, the bolt 21 passes through the fixing ring 19 and is then locked with the nut 18. Finally, the self-locking hook 13 is used to hang it on the hanging ring 15.

[0046] In actual installation, compared with traditional installation methods, it saves 90% of the earthwork work and shortens the construction period by 60%. At the same time, it can achieve 2km of seamless pipeline production, eliminating the need for joints in the original steel pipeline and saving 50% of the project investment. The main driving factors for the increase in pipeline hydrogen transportation costs are the depreciation and maintenance costs of pipe materials, which are positively correlated with the transportation distance. When the transportation distance is 100km, the hydrogen transportation cost is 1.20 yuan / kg, which is about 1 / 5 of the cost of gaseous hydrogen trailers for the same distance.

[0047] In summary, this invention avoids secondary excavation for pipelines, does not damage existing roads and facilities, does not harm urban green spaces, and avoids road congestion caused by construction.

[0048] By utilizing existing and abandoned pipelines, the laying speed is fast, requires fewer personnel, is not affected by weather, and shortens the construction period.

[0049] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laying method of a flexible intelligent hydrogen pipeline capable of realizing rapid laying, characterized in that, The hydrogen transport pipeline (1) includes a polyethylene pipe (1-6), the outer side of which is covered with a second adhesive layer (1-4), and the polyethylene pipe (1-6) and the second adhesive layer (1-4) are bonded together by a fiberglass tape winding reinforcement layer (1-5). The outer side of the second adhesive layer (1-4) is covered with a first adhesive layer (1-2), and the second adhesive layer (1-4) and the first adhesive layer (1-2) are bonded together by an aluminum foil layer (1-3). The outer side of the first adhesive layer (1-2) is covered with a polyethylene pipe protective sleeve (1-1). The rapid laying method for the aforementioned hydrogen pipeline (1) includes the following specific steps: S1: Transport the pipe unwinding frame (7) with the hydrogen pipeline (1) wrapped around it to the construction site, untie the binding straps on the hydrogen pipeline (1) and find the end of the hydrogen pipeline (1); S2: Connect the end of the hydrogen pipeline (1) to the tail end of the pipe-guiding robot (8) through a special connector, dig out the backfill layer (9) to expose the end of the foundation pipeline (2), place the pipe-guiding robot (8) at the end of the foundation pipeline (2), and control the movement trajectory of the pipe-guiding robot (8) through a remote control so that the pipe-guiding robot (8) can move from one end of the foundation pipeline (2) to the other end or a designated position. S3: When the basic pipeline (2) encounters the basic pipeline valve (3), enter from the inspection well (5) to find the basic pipeline valve (3), install a pipeline tee (6) on both sides of the basic pipeline valve (3) to lead out the hydrogen transmission pipeline (1), cut off the hydrogen transmission pipeline (1) between the two pipeline tees (6) and connect it through the joint (4) to facilitate the connection of ultra-long pipelines, as well as the maintenance and inspection of subsequent pipelines; S4: After the pipe-leading robot (8) reaches the predetermined position by remote control, first separate the special connector, and then continue to drag the hydrogen pipeline (1) until the length required for the next construction connection is met. At this time, the other end of the hydrogen pipeline (1) is cut off by the cutting equipment. S5: Install a wireless transmission module inside the inspection well (5), and drill a hole in the basic pipeline (2) inside the inspection well (5) to install a hydrogen leakage sensor (10) electrically connected to the wireless transmission module. The wireless transmission module wirelessly transmits to the external control terminal (12) to transmit the hydrogen content detected by the hydrogen leakage sensor (10) to the control terminal (12), monitor the status of the pipeline in real time, set the hydrogen content threshold, and automatically alarm once the hydrogen content exceeds the standard. S6: Install a remotely controllable smart valve (11) at the end of the hydrogen pipeline (1) to realize daily remote automatic opening and closing.

2. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The intelligent valve (11) is a 24V DC intelligent valve.

3. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The basic pipeline (2) is a DN300 abandoned heating pipeline remaining in the backfill layer (9).

4. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The maximum traction force of the pipe-guiding robot (8) is 200N, and the maximum speed of the pipe-guiding robot (8) in the basic pipeline (2) is controlled at 5m / min.

5. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The maximum design pressure of the hydrogen transport pipeline (1) is 4.0 MPa.

6. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The wireless transmission module adopts a GPRS wireless data transmission module.

7. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 1, characterized in that, The dedicated connector includes a connecting housing (16), with an inner cylinder (20) threaded at the center of one end of the connecting housing (16). Arc-shaped clamps (22) are movably connected to the upper and lower sides of the inner cylinder (20) on one side of the connecting housing (16). A positive and negative screw (14) is rotatably connected inside the connecting housing (16). A knob (17) is fixed through the connecting housing (16) at the upper end of the positive and negative screw (14). The positive and negative thread sections of the positive and negative screw (14) inside the connecting housing (16) are threaded with matching threaded sleeves (24). A connecting rod (23) is fixed at one end of each of the two threaded sleeves (24). The other ends of the two connecting rods (23) are fixed through the connecting housing (16) and respectively to the two arc-shaped clamps (22). A self-locking hook (13) is rotatably connected to the other end of the connecting housing (16).

8. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 7, characterized in that, The tail end of the tube-guiding robot (8) is fixed with a hanging ring (15) at the position corresponding to the self-locking hook (13), and the self-locking hook (13) is hung on the hanging ring (15).

9. The laying method of the flexible intelligent hydrogen pipeline capable of achieving rapid laying according to claim 7, characterized in that, Bolts (21) are fixed on both sides of one end of the bottom arc-shaped clamp (22). Fixing rings (19) for passing through are fixed on both sides of the upper arc-shaped clamp (22) and at the positions corresponding to the bolts (21). A nut (18) that is threaded to the end of the bolt (21) is rotatably connected above the fixing ring (19).

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