Anti-leakage intelligent monitoring double-layer casing pipe, assembling equipment and assembling method of anti-leakage intelligent monitoring double-layer casing pipe

Abstract

The invention discloses an anti-leakage intelligent monitoring double-layer casing pipe, assembling equipment and an assembling method thereof, and relates to the technical field of nuclear facility or chemical equipment matching, the anti-leakage intelligent monitoring double-layer casing pipe comprises an inner pipe and an outer pipe, the outer pipe is arranged on the outer side of the inner pipe in a sleeving mode, and multiple sets of supporting rings are arranged between the inner pipe and the outer pipe at equal intervals; the multiple sets of supporting rings are connected with the inner pipe. A monitoring device is arranged on one side of the outer pipe and used for monitoring leakage of the inner pipe. The assembling equipment comprises a supporting and guiding assembly, a welding assembly, an inner pipe milling cutter, an inner pipe ironing plate, an outer pipe milling cutter and an outer pipe ironing plate. The assembling method comprises the steps of preparation, inner pipe butt joint and appearance butt joint. A single safety barrier is upgraded into a double-independent safety barrier by arranging a double-layer sleeve structure formed by combining the inner pipe and the outer pipe.

Description

Technical Field

[0001] This invention relates to the field of supporting technology for nuclear facilities or chemical equipment, specifically to a leak-proof intelligent monitoring double-layer sleeve, assembly equipment, and assembly method. Background Technology

[0002] In industrial sectors such as chemical engineering, nuclear fuel cycle reprocessing, and nuclear power plant operation, wastewater generated during production processes often contains radioactive nuclides or other highly hazardous chemicals. The safe discharge and disposal of such wastewater is crucial for ensuring human health, environmental safety, and the stable operation of facilities. Leaks in the transmission pipelines can lead to the release of radioactive materials or highly hazardous chemicals, causing irreparable environmental pollution and major safety accidents. Therefore, extremely high requirements are placed on the integrity, sealing, and early detection capabilities of such drainage pipelines.

[0003] Currently, single-layer pipes are mainly used for transporting such high-risk media in drainage pipelines in this field. To enhance safety, the commonly used technical means are to select high-specification corrosion-resistant and radiation-resistant materials (such as stainless steel and Hastelloy) and increase the pipe wall thickness, hoping to prevent leakage through the strength and durability of the materials themselves. At the same time, monitoring points are usually set up at drainage tanks or at the end of the pipeline to monitor whether the water quality meets the standards or whether there are any abnormalities by taking samples for testing regularly or installing a single radiation detector.

[0004] However, the inventors discovered that these existing technologies have significant limitations, mainly in the following aspects: Passive protection, unable to provide proactive warnings: Existing solutions are essentially passive protection, relying solely on the pipeline itself not failing. Once the pipeline perforates or ruptures due to corrosion, fatigue, external impact, or seal failure, it can only be detected after the leaked medium has seeped into the external environment, exhibiting a significant time lag.

[0005] Leak location is difficult: End-point monitoring methods can only determine whether there is an anomaly in the overall system, but cannot quickly and accurately locate the specific leak point. For plant pipelines that are hundreds or even thousands of meters long, this means a huge workload for investigation, delays in emergency repairs, and greatly increases the risks and costs associated with leaks.

[0006] Single containment barrier: A single-layer pipeline structure means it only has one safety barrier. Once this barrier fails, high-risk media will come into direct contact with the environment, which does not comply with the basic safety principles of "defense in depth" and "multiple barriers" in the nuclear industry. Summary of the Invention

[0007] The purpose of this invention is to provide a leak-proof intelligent monitoring double-layer sleeve, assembly equipment and assembly method, to solve the technical problems of passive protection, inability to actively warn, difficulty in leak location and single containment barrier in the prior art.

[0008] The objective of this invention can be achieved through the following technical solutions: A leak-proof intelligent monitoring double-layer sleeve includes an inner tube and an outer tube, wherein the outer tube is sleeved on the outside of the inner tube, and multiple sets of support rings are provided at equal intervals between the inner tube and the outer tube; Multiple sets of the support rings are connected to the inner tube; A monitoring device is installed on one side of the outer pipe to monitor for leaks in the inner pipe.

[0009] As a further embodiment of the present invention: the support ring includes two sets of semicircular rings, and multiple sets of connecting holes are opened on the outer axial surface of the semicircular rings. The two sets of semicircular rings are correspondingly combined on the outer side of the inner tube to form the support ring. The support ring is welded or electrofused onto the inner tube.

[0010] As a further aspect of the present invention: multiple sets of the leak-proof intelligent monitoring double-layer sleeves are combined to form a pipeline, and an anchor point is provided at the connection of the outer pipes of two adjacent sets of the leak-proof intelligent monitoring double-layer sleeves; The outer wall of the anchor point is made of resistance wire, which is tightly connected to the outer tube by electrofusion.

[0011] As a further aspect of the present invention: an assembly device for a leak-proof intelligent monitoring double-layer sleeve, used to assemble multiple sets of leak-proof intelligent monitoring double-layer sleeves as described above to form an integral pipeline, characterized in that it includes a support and guide component, a welding component, an inner tube milling cutter, an inner tube hot plate, an outer tube milling cutter, and an outer tube hot plate. The welding assembly includes a welding frame, with guide rods at both the upper and lower ends of the welding frame, a linear module mounted on the upper side of the welding frame, and a half-clamping block mounted on the guide rod. The half-clamping block on the moving side is connected to the moving base of the linear module. The half-clamping block clamps the corresponding inner or outer tube and moves it together with the external force to achieve docking.

[0012] As a further aspect of the present invention: the support and guide assembly includes a lower guide frame, a connecting frame is connected to one side of the lower guide frame, and an upper guide frame is provided on the top of the connecting frame; The upper guide frame includes an upper guide frame body, and the upper guide frame body is provided with multiple sets of upper guide rollers; The upper guide roller is provided with movable seats at both ends, and the upper guide frame body is provided with multiple sets of sliding grooves. Each set of upper guide rollers slides in the corresponding sliding groove through the movable seats on both sides, and a spring is provided between the movable seats and the sliding grooves.

[0013] As a further aspect of the present invention: the external tube end mill includes an end mill body, a moving end mill body is hinged to one side of the end mill body, a cutting assembly is provided between the moving end mill body and the end mill body, and a driving assembly is provided on the end mill body; The driving component drives the cutting component to rotate, thereby cutting the end face of the outer tube.

[0014] As a further aspect of the present invention: the driving assembly includes a driving motor mounted on one side of the top of the milling cutter body, the output shaft of the driving motor passing through the outer wall of the milling cutter body and connected to a driving gear, a mating cavity being provided inside the milling cutter body, a transmission gear being rotatably disposed in the mating cavity, and the driving gear meshing with the transmission gear.

[0015] As a further aspect of the present invention: the cutting assembly includes a first sector gear ring and a second sector gear ring, and a sector-shaped tooth groove is provided in the middle of the outer axial surface of both the first sector gear ring and the second sector gear ring. The two sets of sector-shaped tooth grooves are combined to form a set of circular tooth grooves, and the circular tooth grooves are meshed with the transmission gear. The first sector ring has a first guide platform symmetrically arranged on its outer axial surface, and the second sector ring has a second guide platform symmetrically arranged on its outer axial surface. The milling cutter body and the milling cutter movable body are both symmetrically provided with mating arc grooves on the arc surface near the cutting assembly. The first guide platform and the second guide platform are both adapted to the mating arc grooves. The first sector ring has a first cutter head symmetrically mounted on both sides, and the second sector ring has a second cutter head symmetrically mounted on both sides.

[0016] As a further aspect of the present invention: the central angle of the sector formed by the two ends of the outer shaft surface of the second sector ring and the cutting center O is B; after the milling cutter movable body is opened, the central angle of the sector formed by the two ends of the notch of the milling cutter body and the cutting center O is A; the central angle of the sector formed by the two ends of the outer shaft surface of the first sector ring and the cutting center O is C. And B < A < 180°, and B + C = 360°; The central angle of the sector formed by the two ends of the outer shaft surface of the first guide table and the cutting center O is smaller than the central angle of the sector formed by the two ends of the notch of the milling cutter body and the cutting center O after the moving body of the milling cutter is opened.

[0017] As a further aspect of the present invention: a method for assembling a leak-proof intelligent monitoring double-layer sleeve, using the aforementioned assembly equipment for leak-proof intelligent monitoring double-layer sleeve, characterized by comprising the following steps: Step 1, Preparation: Transport the leak-proof smart monitoring double-layer sleeve to the welding station and provide support and guidance through multiple sets of support and guidance components; Step 2, Inner Tube Heat Melting and Butt Connection: Heat melt and butt the two sets of inner tubes together; Step 3, Outer Tube Hot Melt Butt Connection: After the inner tubes are connected, replace the half clamping blocks to clamp the outer tubes on both sides. Multiple sets of half clamping blocks near the moving side are connected to the moving base of the linear module. Install the outer tube milling cutter, start the linear module, and drive the outer tube on the moving side to move, squeezing the outer tube milling cutter until it fits against the outer tube on the other end. Start the outer tube milling cutter to cut. After cutting, remove the outer tube milling cutter, install the outer tube hot plate on the guide rod of the welding assembly, start the linear module again, and drive the outer tube on the moving side to move, squeezing the outer tube hot plate until it fits against the end face of the outer tube on the other end. Turn on the power to the outer tube hot plate to heat the end faces of the outer tubes on both sides. After heating for a set time, remove the outer tube hot plate. The linear module drives the outer tube on the moving side to be hot melt connected to the outer tube on the fixed side.

[0018] The beneficial effects of this invention are: This invention upgrades a single safety barrier into two independent safety barriers by using a double-layered casing structure consisting of an inner and outer pipe. The inner pipe, as the first barrier, undertakes the main function of media transportation; the outer pipe, as the second barrier, forms a completely enclosed isolation chamber. Even if the inner pipe fails and leaks, the hazardous media will be completely contained within the second barrier formed by the outer pipe, thus completely preventing the direct leakage of radioactive nuclides or hazardous chemicals into the external environment. This design concept perfectly aligns with the highest safety principle in the nuclear industry—"Defence in Depth"—significantly improving the overall reliability and safety of the system by setting up layers of independent protection. Furthermore, the presence of the outer pipe provides an additional physical protection layer for the inner pipe, effectively resisting the effects of external environmental corrosion, abrasion, external impacts (such as collisions and earthquakes), and ultraviolet aging, reducing the probability of the inner pipe failing due to external factors, thereby indirectly extending the service life and reliability of the entire pipeline system.

[0019] This invention ingeniously transforms the interlayer space of a double-walled casing into a continuous "monitoring area." By deploying one or more sensor combinations within this area, the system can detect even the smallest leak signals in real time. Once the inner tube perforates or cracks, the leaking medium immediately enters the interlayer and triggers a sensor alarm, thus achieving early warning and buying valuable emergency response time for maintenance personnel. This fundamentally solves the problem of delayed leak detection in existing technologies.

[0020] This invention employs a hot-melt butt welding method for both the inner and outer tubes, achieving structural integrity and homogenization, and completely eliminating weak points in the connection. The hot-melt butt welding process fuses the tube body into a single unit through heating the end faces and melting and extruding, resulting in a joint with strength, density, corrosion resistance, and radiation resistance completely consistent with the tube body. This avoids the potential risks associated with the introduction of a dissimilar material like the electrofusion sleeve in traditional electrofusion butt welding. Under extreme conditions of high temperature, high pressure, strong corrosion, or strong radiation, dissimilar interfaces are more likely to become the starting point of failure. Hot-melt butt welding ensures a homogeneous barrier throughout the entire process from the tube body to the interface, eliminating any weaknesses in the dual safety protection (inner tube barrier + outer tube barrier) and significantly improving reliability.

[0021] This invention employs a first sector tooth ring with a larger central angle and a second sector tooth ring with a smaller central angle to ensure that during assembly, after the first sector tooth ring is installed into the milling cutter body, it will not detach when placed on the welding assembly across the inner tube (the central angle is greater than 180 degrees, preventing it from detaching from the notch during vertical placement). Furthermore, when assembling the second sector tooth ring after it has passed through the inner tube, the first mating platform and the first mating groove provide positioning and guidance, ensuring assembly accuracy. This allows the mating groove to precisely align with the second mating platform when the milling cutter's moving body closes, preventing assembly misalignment that could prevent the moving body from closing and necessitate reassembly. Attached Figure Description

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure of the leak-proof intelligent monitoring double-layer sleeve of the present invention; Figure 2 This is a schematic diagram of the multi-group leak-proof intelligent monitoring double-layer sleeve assembly pipeline structure of the present invention; Figure 3 This is a schematic diagram of the inner tube connection state of the present invention; Figure 4 This is a schematic diagram of the supporting and guiding component structure of the present invention; Figure 5 This is a schematic diagram of the guide frame structure of the present invention; Figure 6 This is a schematic diagram of the cutting state of the appearance of the present invention; Figure 7 This is a schematic diagram of the external tube milling cutter structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the external tube milling cutter of the present invention; Figure 9 This is a schematic diagram of the central angle between the first sector tooth ring and the second sector tooth ring of the present invention; Figure 10This is a schematic diagram of the mating structure of the first sector ring and the second sector ring of the present invention; Figure 11 This is a schematic diagram of the outer tube heating plate structure of the present invention.

[0024] In the diagram: 100, Inner tube; 200, Outer tube; 300, Support ring; 400, Monitoring device; 500, Anchor point; 600, Support guide assembly; 601, Lower guide frame; 602, Connecting frame; 603, Upper guide frame; 6031, Upper guide frame body; 6032, Upper guide roller; 6033, Moving seat; 6034, Slide groove; 700, Welding assembly; 701, Linear module; 702, Guide rod; 703, Half clamping block; 800, Inner tube hot plate; 90 0. Outer tube end mill; 901. End mill body; 9011. Snap-fit ​​seat; 902. End mill moving body; 9021. Mating arc groove; 903. Drive motor; 904. Drive gear; 905. Transmission gear; 906. First sector gear ring; 9061. First guide platform; 9062. First docking platform; 907. Second sector gear ring; 9071. Second guide platform; 9072. Second docking platform; 908. First cutter head; 909. Second cutter head; 1000. Outer tube hot plate.

[0025] O is the cutting center; B is the central angle of the sector formed by the two ends of the outer shaft surface of the second sector ring and the cutting center O; A is the central angle of the sector formed by the two ends of the notch of the milling cutter body and the cutting center O after the moving part of the milling cutter is opened; C is the central angle of the sector formed by the two ends of the outer shaft surface of the first sector ring and the cutting center O. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides a leak-proof smart monitoring double-layer sleeve, which includes an inner tube 100 and an outer tube 200. The outer tube 200 is sleeved on the outside of the inner tube 100, and multiple sets of support rings 300 are equally spaced between the inner tube 100 and the outer tube 200. The multiple sets of support rings 300 are connected to the inner tube 100 to form a support structure between the inner tube 100 and the outer tube 200.

[0029] By employing a double-layered casing structure combining inner tube 100 and outer tube 200, the single safety barrier is upgraded to a dual, independent safety barrier. Inner tube 100 serves as the first barrier, undertaking the primary function of media transport; outer tube 200 acts as the second barrier, forming a completely enclosed isolation chamber. Even if inner tube 100 fails and leaks, the hazardous media will be completely contained within the second barrier formed by outer tube 200, thus completely preventing the direct leakage of radionuclides or hazardous chemicals into the external environment. This design concept perfectly aligns with the highest safety principle in the nuclear industry—"Defence in Depth"—significantly improving the overall reliability and safety of the system through the establishment of multiple independent protective layers.

[0030] Furthermore, the presence of the outer tube 200 provides an additional physical protective layer for the inner tube 100, which can effectively resist the effects of external environmental corrosion, wear, external impact (such as bumps and earthquakes), and ultraviolet aging, reducing the probability of the inner tube 100 failing due to external factors, thereby indirectly extending the service life and reliability of the entire pipeline system.

[0031] Preferably, the inner tube 100 and / or outer tube 200 are made of high-density polyethylene, and the entire tube production process complies with national standards and nuclear power requirements.

[0032] Preferably, the support ring 300 includes two sets of semicircular rings, and multiple sets of connecting holes are formed on the outer axial surface of the semicircular rings. The shape of the connecting holes is not limited. The support ring 300 is formed by correspondingly combining the two sets of semicircular rings on the outside of the inner tube 100, and the spaces separated by the multiple sets of support rings 300 are interconnected through the connecting holes.

[0033] Furthermore, the support ring 300 can be welded to the inner tube 100, or it can be tightly connected to the inner tube 100 by electrofusion. When electrofusion is used, resistance wires are evenly distributed on the inner wall of the semicircular ring, and the tight connection with the inner tube 100 is achieved by electrofusion by connecting an external power source.

[0034] Furthermore, the outer diameter of the support ring 300 is slightly smaller than the inner diameter of the outer tube 200, which facilitates the smooth insertion of the inner tube 100 of the support ring 300 into the outer tube 200.

[0035] Preferably, in this embodiment, a monitoring device 400 is provided on one side of the outer pipe 200. The monitoring device 400 is electrically or wirelessly connected to an external monitoring terminal to realize real-time monitoring of leaks. It should be noted that the information transmission process and logic between the monitoring device 400 and the monitoring terminal are existing technologies and will not be described in detail here.

[0036] It should also be noted that the aforementioned monitoring device 400 includes, but is not limited to, vibration-sensing fiber optic cables (used for perimeter security and infrastructure monitoring requiring long distances, high security, and precise positioning), radiation sensors (such as GM counters and scintillator detectors), chemical parameter sensors (such as pH sensors, conductivity sensors, and ion-selective electrodes), or physical state sensors (such as level sensors and pressure sensors). Depending on the characteristics of the transported medium, one or more sensors can be selected and deployed in combination to achieve reliable, real-time monitoring and location of leaks.

[0037] Traditional single-layer piping systems cannot monitor the integrity of the pipes themselves in real time, and leaks are unpredictable. This embodiment cleverly transforms the space between the double-layered pipes (inner pipe 100 and outer pipe 200) into a continuous "monitoring area." By deploying one or more sensor combinations in this area, the system can detect even the smallest leak signals in real time. Once the inner pipe 100 experiences a perforation or crack, the leaking medium immediately enters the space and triggers a sensor alarm, thus achieving early warning and buying valuable emergency response time for maintenance personnel. This fundamentally solves the problem of delayed leak detection in existing technologies.

[0038] Furthermore, the interlayer space of the double-layer casing can not only be used for monitoring, but also designed as a temporary containment and diversion channel. After a leak is detected, the high-risk media trapped in the interlayer can be safely discharged to a dedicated treatment system or collection container through a pre-designed drainage interface, thereby achieving controllable management of the leaked material, avoiding secondary leaks or spread during maintenance, and further improving the safety and effectiveness of emergency response.

[0039] It should be noted that multiple sets of leak-proof intelligent monitoring double-layer sleeves in this embodiment are assembled together to form an integrated pipeline. Specifically, as shown in the example... Figure 2 As shown, the assembly state of the above-mentioned double-layer sleeve for leak-proof intelligent monitoring is such that one end of one set of double-layer sleeve for leak-proof intelligent monitoring is connected to the fixed end, and the other end is connected to another set of double-layer sleeves for leak-proof intelligent monitoring. Anchor points 500 are set at the connection of the outer tubes 200 of the two sets of double-layer sleeves for leak-proof intelligent monitoring, which are used to center and fix the inner tube 100 when the inner tube 100 and the outer tube 200 are connected.

[0040] Preferably, one side of the anchor point 500 has a tapered structure. During assembly, the tapered end of the anchor point 500 is preferentially inserted between the inner tube 100 and the outer tube 200. Resistance wires are arranged on the outer wall of the anchor point 500, and an external power supply is connected to achieve a tight connection with the outer tube 200 by electrofusion. This facilitates the stable and effective fixing of the inner tube 100 at the port.

[0041] Preferably, in this embodiment, the connection method for the assembly of multiple sets of the above-mentioned leak-proof intelligent monitoring double-layer sleeves is as follows: both the inner tube 100 and the outer tube 200 adopt a hot-melt butt welding method, achieving structural integrity and homogenization, and completely eliminating weak points in the connection. The hot-melt butt welding process fuses the tube body into one through heating the end face and melting and extruding, and the resulting joint has the same strength, density, corrosion resistance, and radiation resistance as the tube body. This avoids the potential risks brought about by the introduction of the electrofusion sleeve, a heterogeneous material, in traditional electrofusion butt welding. Under extreme conditions of high temperature, high pressure, strong corrosion, or strong radiation, heterogeneous interfaces are more likely to become the starting point of failure. Hot-melt butt welding ensures a homogeneous barrier throughout the entire process from the tube body to the interface, so that there are no shortcomings in the dual safety protection (inner tube barrier + outer tube barrier), and the reliability is significantly improved.

[0042] Furthermore, it eliminates the need for all electrofusion sleeves used for connections, representing a significant cost reduction for long-distance pipelines. While the initial investment in hot-melt butt welding equipment is high, its cost per connection (consuming only electricity) is far lower than the purchase cost of electrofusion sleeves. Its economic benefits become increasingly apparent in long-distance, large-scale projects. Moreover, since the lifespan of the hot-melt joint is equivalent to that of the pipe body, it requires almost no maintenance, avoiding the additional repair or replacement costs that may arise from the aging of electrofusion sleeves.

[0043] Furthermore, existing end-point monitoring methods are unable to locate faults in pipelines several kilometers long. In practical applications, the leak-proof intelligent monitoring double-layered conduit of this embodiment is assembled as an independent pipe fitting, ensuring that each pipe section is independently equipped with a monitoring unit (monitoring device). When a leak occurs, only the one or a few sensors closest to the leak point will emit a strong alarm signal, allowing the central control system (monitoring terminal) to immediately and accurately locate the leaking pipe fitting. This significantly shortens troubleshooting time, simplifies maintenance procedures, enables rapid isolation of the faulty section, maximizes control of the leak's impact, and significantly reduces the risk of radiation exposure or chemical contact for maintenance personnel.

[0044] Example 2

[0045] This embodiment provides an assembly device for a leak-proof intelligent monitoring double-layer sleeve, which is used to assemble multiple sets of leak-proof intelligent monitoring double-layer sleeves from Embodiment 1 to form an integral pipeline for application in actual processing environments.

[0046] like Figures 3-11 As shown, the assembly equipment in this embodiment includes a support and guide assembly 600, a welding assembly 700, an inner tube milling cutter, an inner tube hot plate 800, an outer tube milling cutter 900, and an outer tube hot plate 1000.

[0047] Among them, such as Figures 3-5As shown, the support and guidance component 600 in this embodiment is used to support and guide the two sets of leak-proof smart monitoring double-layer sleeves to be connected when they are docked.

[0048] Preferably, multiple sets of support and guide components 600 are provided to provide stability support and guidance for the leak-proof smart monitoring double-layer sleeve. Each support and guide component 600 includes a lower guide frame 601 located at the bottom, a connecting frame 602 connected to one side of the lower guide frame 601, and an upper guide frame 603 located on the top of the connecting frame 602. The upper guide frame 603 is positioned corresponding to the lower guide frame 601.

[0049] Preferably, the lower guide frame 601 includes a lower guide frame body and lower guide rollers. Multiple sets of inclined lower guide rollers are arranged on the lower guide frame body. The cooperation of these multiple sets of lower guide rollers provides axial support for the outer tube 200 of the leak-proof intelligent monitoring double-layer sleeve. The inclination of the multiple sets of lower guide rollers is as follows: Figure 4 As shown.

[0050] Preferably, the upper guide frame 603 can be pre-set according to the diameter of the outer tube 200 and welded to the connecting frame 602, or it can be fixed by bolts. The upper guide frame 603 includes an upper guide frame body 6031, in which multiple sets of upper guide rollers 6032 are provided, and at both ends of the upper guide rollers 6032 are provided with movable seats 6033. Multiple sets of sliding grooves 6034 are opened at corresponding positions on the upper guide frame body 6031. Each set of guide rollers 6032 slides in the corresponding sliding groove 6034 through the movable seats 6033 on both sides, and a spring (not shown in the figure) is provided between the movable seats 6033 and the sliding grooves 6034 for resetting the guide rollers 6032.

[0051] When the diameter of the outer tube 200 is slightly off, multiple sets of upper guide rollers 6032, capable of elastic reset, adaptively guide the outer tube 200. Furthermore, the cooperation between the upper and lower guide rollers 6032 maintains the stability of the outer tube 200's movement during the docking process, preventing any impact on the accuracy of cutting and docking.

[0052] Preferably, such as Figure 3 and Figure 6 As shown, the welding assembly 700 in this embodiment is used to connect the ends of the two sets of leak-proof smart monitoring double-layer sleeves, and works with the inner tube milling cutter, inner tube hot plate 800, outer tube milling cutter 900 and outer tube hot plate 1000 to heat-melt the inner tube 100 and outer tube 200 together.

[0053] The welding assembly 700 includes a welding frame, which is set according to the docking position. Guide rods 702 are provided at both the upper and lower ends of the welding frame, and a linear module 701 is installed on the upper side of the welding frame.

[0054] Furthermore, the welding assembly 700 also includes a half-clamping block 703 disposed on the guide rod 702. It should be noted that the half-clamping block 703, which is on the moving side (the side of the double-layer sleeve for leak-proof intelligent monitoring to be docked) during the docking process, is connected to the moving base of the linear module 701. The linear module 701 drives the half-clamping block 703 to move, and the half-clamping block 703 clamps the corresponding inner tube 100 or outer tube 200 and moves it together with the external force to achieve docking.

[0055] It should be noted that the above-mentioned half-clamping block 703 is composed of two half-blocks and is used to clamp the inner tube 100 or the outer tube 200. The half-clamping block 703 is existing technology, and its specific structure will not be described in detail here.

[0056] More specifically, when performing hot-melt butt welding on the inner tube 100, the half-clamping block 703 is first assembled onto the guide rod 702, clamping the two inner tubes 100 to be butt welded. The inner tube 100 connected to the fixed end remains stationary, while the other inner tube 100 is butt welded by the movement of the half-clamping block 703. Initially, an inner tube milling cutter is used to cut the inner tubes 100 on both sides to ensure a flat end face. The inner tube milling cutter is existing technology and can be a hot-melt butt welding machine milling cutter such as a 160 manual milling cutter.

[0057] After the end face is cut, the inner tube hot plate 800 is manually placed to heat melt the end faces of the inner tubes 100 on both sides. Then, the linear module 701 drives the half clamping block 703 on the moving side to move, and in conjunction with the external force, pushes the inner tubes 100 on both sides together to heat melt and weld them together.

[0058] It should be noted that the inner tube heating plate 800 is existing technology, and a manual heating plate such as 160 can be used instead. Its specific structure will not be described in detail here.

[0059] It should be understood that when the inner tubes 100 are joined and the outer tubes 200 are then joined by heat fusion, the inner tubes 100 obstruct the process, preventing ordinary manual milling cutters from being inserted between the two outer tubes 200 to cut the end faces of the outer tubes 200. Similarly, ordinary manual hot plate cannot be used to heat fuse the end faces of the two outer tubes 200.

[0060] Therefore, as Figures 7-10 As shown, this embodiment provides an outer tube end mill 900, which is used to cut the end face of the outer tube 200 after the inner tube 100 is connected.

[0061] The aforementioned outer tube end mill 900 includes an end mill body 901, a movable end mill body 902 hinged to one side of the end mill body 901, and a cutting assembly disposed between the movable end mill body 902 and the end mill body 901. The assembly and positioning of the cutting assembly are achieved through the cooperation between the movable end mill body 902 and the end mill body 901. A drive assembly is disposed on the end mill body 901, which drives the cutting assembly to rotate and achieve cutting of the end face of the outer tube 200.

[0062] Preferably, the milling cutter body 901 has a mating cavity inside, and the driving assembly includes a drive motor 903 mounted on one side of the top of the milling cutter body 901. The output shaft of the drive motor 903 passes through the outer wall of the milling cutter body 901 and is connected to a drive gear 904. A transmission gear 905 is rotatably arranged in the mating cavity, and the drive gear 904 and the transmission gear 905 are meshed together.

[0063] Preferably, the cutting assembly includes a first sector ring 906 and a second sector ring 907. The first sector ring 906 and the second sector ring 907 are combined to form a complete ring. Sector-shaped tooth grooves are provided in the middle of the outer axial surface of the first sector ring 906 and the second sector ring 907. The two sets of sector-shaped tooth grooves are combined to form a set of circular tooth grooves, which mesh with the transmission gear 905.

[0064] By dividing the cutting assembly into two parts, the first sector ring 906 and the second sector ring 907, the outer tube end mill 900 can cross the inner tube 100 by installing the first sector ring 906 and the second sector ring 907 in stages, thereby eliminating the obstruction of the inner tube 100 and realizing the cutting of the outer tube 200.

[0065] Furthermore, the outer axial surface of the first sector ring 906 is symmetrically provided with first guide platforms 9061 on both sides of the sector tooth groove. Similarly, the outer axial surface of the second sector ring 907 is symmetrically provided with second guide platforms 9071 on both sides of the sector tooth groove. Furthermore, symmetrical mating arc grooves 9021 are provided on the arc surfaces of the milling cutter body 901 and the moving body 902 near the cutting assembly. Both sets of first guide platforms 9061 and two sets of second guide platforms 9071 are adapted to the mating arc grooves 9021.

[0066] The engagement of two sets of first guide platforms 9061 and two sets of second guide platforms 9071 with the mating arc groove 9021 provides axial restraint during the rotational movement of the first sector ring 906 and the second sector ring 907, maintaining cutting stability. Furthermore, the engagement of the first guide platforms 9061 and second guide platforms 9071 with the mating arc groove 9021 also serves as a positioning guide during assembly. Aligning the first guide platform 9061 or the second guide platform 9071 with the mating arc groove 9021 allows for the assembly of the first sector ring 906 or the second sector ring 907.

[0067] It should be noted that the two sets of first guide platforms 9061 can be adapted to the mating arc grooves 9021 on the milling cutter body 901, and also to the mating arc grooves 9021 on the moving part of the milling cutter 902. Similarly, the two sets of second guide platforms 9071 can be adapted to the same. Furthermore, the two sets of first guide platforms 9061 and the two sets of second guide platforms 9071 are axially aligned, facilitating the unimpeded movement of the first sector ring 906 and the second sector ring 907 on the milling cutter body 901 and the moving part of the milling cutter 902 after they are combined.

[0068] Preferably, a first cutter head 908 is symmetrically installed on both sides of the first sector ring 906, and a second cutter head 909 is symmetrically installed on both sides of the second sector ring 907. The first cutter head 908 and the second cutter head 909 on the same side can be combined to form a complete cutter head. When cutting is required, the complete cutter head formed by the combination of the two sides can cut the end face of the outer tube 200.

[0069] It should be understood that, due to the obstruction after the inner tube 100 is connected, the outer tube milling cutter 900 needs to be installed in steps. By opening the movable body 902 of the milling cutter, the main body 901 of the milling cutter is made to have a notch, and then the first sector tooth ring 906 and the second sector tooth ring 907 are installed. The installation process is completed across the inner tube 100, so that the combined cutting assembly is fitted on the outside of the inner tube 100.

[0070] Preferably, such as Figure 9 As shown, the central angle of the sector formed by the two ends of the outer shaft surface of the second sector ring 907 and the cutting center O is B; after the milling cutter movable body 902 is opened, the central angle of the sector formed by the two ends of the notch of the milling cutter body 901 and the cutting center O is A; the central angle of the sector formed by the two ends of the outer shaft surface of the first sector ring 906 and the cutting center O is C;

[0071] Preferably, B < A < 180°, and B + C = 360°.

[0072] Preferably, the central angle of the sector formed by the two ends of the outer shaft surface of the two sets of first guide platforms 9061 and the cutting center O is smaller than the central angle of the sector formed by the two ends of the notch of the milling cutter body 901 and the cutting center O after the milling cutter movable body 902 is opened.

[0073] Preferably, the movable part of the milling cutter 902 is hinged to the main body of the milling cutter 901, and the movable end can be fixed to the main body of the milling cutter 901 by a pin. During cutting, the movable end of the movable part of the milling cutter 902 is fixed to the main body of the milling cutter 901, limiting the first sector ring 906 and the second sector ring 907.

[0074] Preferably, after the milling cutter movable body 902 and the milling cutter body 901 are fixed, they form a circular groove, the center of which is coaxial with the center of the complete ring formed by the combination of the first sector ring 906 and the second sector ring 907.

[0075] Preferably, a first mating platform 9062 is provided at one end of the first sector ring 906, and a first mating groove is provided at the other end. A second mating platform 9072 is provided at one end of the second sector ring 907, and a second mating groove is provided at the other end. The first mating platform 9062 is matched with the second mating groove, and the second mating platform 9072 is adapted to the first mating groove. This further improves the accuracy of assembly positioning and avoids deviations caused by the misalignment of the first sector ring 906 and the second sector ring 907, which would affect the cutting effect.

[0076] This embodiment, by setting a first sector tooth ring 906 with a larger central angle and a second sector tooth ring 907 with a smaller central angle to cooperate, ensures that during assembly, after the first sector tooth ring 906 is installed into the milling cutter body 901, it will not fall off when placed on the welding assembly 700 across the inner tube 100 (because the central angle of the first sector tooth ring 906 is greater than 180 degrees, it cannot fall off from the notch during vertical placement). Furthermore, when assembling the second sector tooth ring 907 after it crosses the inner tube 100, the first docking platform 9062 and the first docking groove can position and guide the second sector tooth ring 907, ensuring assembly accuracy. This allows the mating arc groove 9021 to accurately align with the second docking platform 9072 when the milling cutter movable body 902 is closed, avoiding the problem of assembly misalignment causing the milling cutter movable body 902 to fail to close and requiring reassembly.

[0077] Preferably, two sets of locking seats 9011 are provided on the milling cutter body 901. The assembled outer tube milling cutter 900 is locked onto the guide rod 702 of the welding assembly 700 through the locking seats 9011, and the outer tube 200 end face is cut by the pressing of the outer tube 200 on the moving side.

[0078] Preferably, in this embodiment, the outer tube heating plate 1000 is as follows: Figure 11 As shown, it includes two sets of semi-circular heating plates. The two sets of semi-circular heating plates are combined to form a circular outer tube heating plate 1000, realizing the heat-melting operation across the inner tube 100. It should be noted that the semi-circular heating plate is consistent with the principle of manual heating plates in the prior art, only differing in shape. The specific principle and internal structure are existing technologies and will not be elaborated here. After the two sets of semi-circular heating plates are combined and simultaneously powered, heat-melting is achieved on the end face of the outer tube 200.

[0079] Example 3

[0080] This embodiment provides a method for assembling a leak-proof intelligent monitoring double-layer sleeve. Using the assembly equipment described in Embodiment 2, multiple sets of leak-proof intelligent monitoring double-layer sleeves from Embodiment 1 are assembled to form a pipeline. The method includes the following steps: Step 1, Preparation: Transport the leak-proof smart monitoring double-layer sleeve to be connected to the welding station, and support and guide it through multiple sets of support and guide components 600. At this time, the entire leak-proof smart monitoring double-layer sleeve can move flexibly in the support and guide components 600. Step 2, Inner Tube Hot Melting: Apply external force to push the inner tube 100 in the leak-proof intelligent monitoring double-layer sleeve to be connected. After pushing it out a set distance, place the welding assembly 700 between the two sets of inner tubes 100 to be connected. Install the half-clamping blocks 703. Multiple sets of half-clamping blocks 703 near the moving side are connected to the moving base of the linear module 701. Place the inner tube milling cutter on the guide rod 702 of the welding assembly 700. Start the linear module 701 to drive the inner tube 100 on the moving side to move, squeezing the inner tube milling cutter until it fits against the inner tube 100 at the other end. Start... The inner tube end mill performs cutting. After cutting, the inner tube hot plate 800 is placed on the guide rod 702 of the welding assembly 700. The linear module 701 is started again, which moves the inner tube 100 on the moving side to press the inner tube hot plate 800 until it is in contact with the end face of the inner tube 100 on the other end. The power supply of the inner tube hot plate 800 is turned on to heat the end faces of the inner tubes 100 on both sides. After heating for a set time, the inner tube hot plate 800 is removed. The linear module 701 drives the inner tube 100 on the moving side to be thermally fused together with the inner tube 100 on the fixed side (the inner tube 100 connected to the fixed end).

[0081] Step 3, Outer Tube Hot Melt Butt Connection: After the inner tubes are connected, replace the half clamping block 703 to clamp the outer tubes 200 on both sides. Multiple sets of half clamping blocks 703 near the moving side are connected to the moving base of the linear module 701. Assemble the outer tube end mill 900, start the linear module 701, and move the outer tube 200 on the moving side, pressing the outer tube end mill 900 until it is in contact with the outer tube 200 at the other end. Start the outer tube end mill 900 for cutting. After cutting, remove the outer tube end mill 900 and place the outer tube hot plate 10... 00 is installed on the guide rod 702 of the welding assembly 700. The linear module 701 is started again, which drives the outer tube 200 on the moving side to move and squeeze the outer tube heating plate 1000 until it is in contact with the end face of the outer tube 200 on the other end. The power supply of the outer tube heating plate 1000 is turned on to heat the end faces of the outer tubes 200 on both sides. After heating for a set time, the outer tube heating plate 1000 is removed. The linear module 701 drives the outer tube 200 on the moving side to be thermally fused together with the outer tube 200 on the fixed side (the outer tube 200 connected to the fixed end).

[0082] The assembly process of the outer tube end mill 900 is as follows: Open the moving part of the end mill 902, unfold the notch of the end mill body 901, align the first sector tooth ring 906 with the notch position, keep the first guide table 9061 at the notch, guide the first sector tooth ring 906 axially, then rotate the first sector tooth ring 906 to the side away from the notch, and snap the outer tube end mill 900 after installing the first sector tooth ring 906 onto the guide rod 702 of the welding assembly 700, cross the inner tube 100, and connect the second sector tooth ring 907 from the other side of the inner tube 100. Then close the moving part of the end mill 902 to complete the assembly of the outer tube end mill 900.

[0083] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0084] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0085] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A leak-proof intelligent monitoring double-layer sleeve, characterized in that, It includes an inner tube (100) and an outer tube (200), the outer tube (200) being sleeved on the outside of the inner tube (100), and multiple sets of support rings (300) are provided at equal intervals between the inner tube (100) and the outer tube (200). Multiple sets of the support rings (300) are connected to the inner tube (100); A monitoring device (400) is provided on one side of the outer pipe (200) to monitor for leakage of the inner pipe (100).

2. The leak-proof intelligent monitoring double-layer sleeve according to claim 1, characterized in that, The support ring (300) includes two sets of semicircular rings. Multiple sets of connecting holes are opened on the outer axial surface of the semicircular rings. The two sets of semicircular rings are correspondingly combined on the outside of the inner tube (100) to form the support ring (300). The support ring (300) is welded or electrofused to the inner tube (100).

3. The leak-proof intelligent monitoring double-layer sleeve according to claim 1, characterized in that, Multiple sets of the aforementioned leak-proof intelligent monitoring double-layer sleeves are combined to form a pipeline, and an anchor point (500) is provided at the connection of the outer pipe (200) of two adjacent sets of the aforementioned leak-proof intelligent monitoring double-layer sleeves. The outer wall of the anchor point (500) is made of resistance wire, which is tightly connected to the outer tube (200) by electrofusion.

4. An assembly device for a leak-proof intelligent monitoring double-layer sleeve, used to assemble multiple sets of leak-proof intelligent monitoring double-layer sleeves as described in claim 1 to form an integral pipeline, characterized in that, Includes a support guide assembly (600), a welding assembly (700), an inner tube end mill, an inner tube hot plate (800), an outer tube end mill (900), and an outer tube hot plate (1000); The welding assembly (700) includes a welding frame, with guide rods (702) provided at both the upper and lower ends of the welding frame. A linear module (701) is installed on the upper side of the welding frame, and a half-clamping block (703) is installed on the guide rod (702). The half-clamping block (703) on the moving side is connected to the moving base of the linear module (701). The half-clamping block (703) clamps the corresponding inner tube (100) or outer tube (200) and moves together with the external force to achieve docking.

5. The assembly equipment for a leak-proof intelligent monitoring double-layer sleeve according to claim 4, characterized in that, The support guide assembly (600) includes a lower guide frame (601), a connecting frame (602) is connected to one side of the lower guide frame (601), and an upper guide frame (603) is provided on the top of the connecting frame (602). The upper guide frame (603) includes an upper guide frame body (6031), and multiple sets of upper guide rollers (6032) are provided in the upper guide frame body (6031). The upper guide roller (6032) is provided with movable seats (6033) at both ends. The upper guide frame body (6031) is provided with multiple sets of sliding grooves (6034). Each set of upper guide rollers (6032) slides in the corresponding sliding groove (6034) through the movable seats (6033) on both sides. A spring is provided between the movable seat (6033) and the sliding groove (6034).

6. The assembly equipment for a leak-proof intelligent monitoring double-layer sleeve according to claim 4, characterized in that, The external tube end mill (900) includes an end mill body (901), an end mill movable body (902) is hinged to one side of the end mill body (901), a cutting assembly is provided between the end mill movable body (902) and the end mill body (901), and a driving assembly is provided on the end mill body (901). The driving component drives the cutting component to rotate and cut the end face of the outer tube (200).

7. The assembly equipment for a leak-proof intelligent monitoring double-layer sleeve according to claim 6, characterized in that, The drive assembly includes a drive motor (903) mounted on one side of the top of the milling cutter body (901). The output shaft of the drive motor (903) passes through the outer wall of the milling cutter body (901) and is connected to a drive gear (904). A mating cavity is provided inside the milling cutter body (901), and a transmission gear (905) is rotatably disposed in the mating cavity. The drive gear (904) and the transmission gear (905) are meshed and connected.

8. The assembly equipment for a leak-proof intelligent monitoring double-layer sleeve according to claim 7, characterized in that, The cutting assembly includes a first sector ring (906) and a second sector ring (907). The outer shaft surfaces of the first sector ring (906) and the second sector ring (907) are provided with sector-shaped tooth grooves. The two sets of sector-shaped tooth grooves are combined to form a set of circular tooth grooves. The circular tooth grooves mesh with the transmission gear (905). The first sector ring (906) has a first guide platform (9061) symmetrically arranged on the outer axial surface, and the second sector ring (907) has a second guide platform (9071) symmetrically arranged on the outer axial surface. The end mill body (901) and the end mill movable body (902) are both symmetrically provided with mating arc grooves (9021) on the arc surface near the cutting assembly. The first guide platform (9061) and the second guide platform (9071) are both adapted to the mating arc grooves (9021). The first sector ring (906) has a first cutter head (908) symmetrically mounted on both sides, and the second sector ring (907) has a second cutter head (909) symmetrically mounted on both sides.

9. The assembly equipment for a leak-proof intelligent monitoring double-layer sleeve according to claim 8, characterized in that, The central angle of the sector formed by the two ends of the outer shaft surface of the second sector ring (907) and the cutting center O is B; after the milling cutter movable body (902) is opened, the central angle of the sector formed by the two ends of the notch of the milling cutter body (901) and the cutting center O is A; the central angle of the sector formed by the two ends of the outer shaft surface of the first sector ring (906) and the cutting center O is C; And B < A < 180°, and B + C = 360°; The central angle of the sector formed by the two ends of the outer shaft surface of the first guide platform (9061) and the cutting center O is smaller than the central angle of the sector formed by the two ends of the notch of the milling cutter body (902) and the cutting center O after the milling cutter body (901) is opened.

10. A method for assembling a leak-proof intelligent monitoring double-layer sleeve, using the assembly equipment for a leak-proof intelligent monitoring double-layer sleeve as described in claim 4, characterized in that, Includes the following steps: Step 1, Preparation: Transport the leak-proof smart monitoring double-layer sleeve to be connected to the welding station and provide support and guidance through multiple sets of support and guidance components (600); Step 2, Inner tube heat fusion butt welding: Heat fusion butt welding the two sets of inner tubes (100); Step 3, Outer Tube Hot Melt Butt Connection: After the inner tube (100) is connected, replace the half clamping block (703) to clamp the outer tubes (200) on both sides. The multiple sets of half clamping blocks (703) near the moving side are connected to the moving base of the linear module (701). The outer tube end mill (900) is assembled, the linear module (701) is started, and the outer tube (200) on the moving side is moved to squeeze the outer tube end mill (900) until it fits against the outer tube (200) at the other end. The outer tube end mill (900) is started to cut. After cutting, the outer tube end mill (900) is removed. Install the outer tube heating plate (1000) on the guide rod (702) of the welding assembly (700), start the linear module (701) again, drive the moving side outer tube (200) to move and squeeze the outer tube heating plate (1000) until it is in contact with the end face of the other end outer tube (200), turn on the power of the outer tube heating plate (1000), heat the end faces of the outer tubes (200) on both sides, heat for a set time, remove the outer tube heating plate (1000), and the linear module (701) drives the moving side outer tube (200) to be thermally connected with the fixed side outer tube (200).

Images