Buried moisture-proof cable

Abstract

The invention discloses a buried moisture-proof cable, and relates to the technical field of cables, and the cable comprises a cable assembly and an isolation assembly. The cable assembly comprises a cable. The isolation assembly comprises an isolation cylinder, a storage opening, a power piece, a storage piece and a rupture film. The storage piece comprises an isolation film and a limiting rod; the isolation cylinder sleeves the cable, and two ends of the isolation cylinder are provided with a plurality of storage ports. The power piece is arranged in the storage opening and used for absorbing water to provide power; water and a plugging agent are stored in the storage opening; localized and precise preliminary leakage repairing can be achieved, water and a plugging agent are separately contained in a plurality of independent storage openings, when a certain part of plugging materials outside the cable assembly have crack water seepage, only the storage openings in the area can be activated, and the situation that due to a small crack, the leakage repairing materials around the whole cable assembly are sprayed out completely, and leakage of the whole cable assembly cannot be caused is avoided. And local repair is realized.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to an underground moisture-proof cable. Background Technology

[0002] In underground cable laying projects, cables typically need to pass through the walls of cable wells. For sealing and fixation, the gap between the cable and the wall through-hole is sealed with waterproof sealant. However, due to various factors such as foundation settlement, material aging, temperature changes, or external pressure, this sealant layer is prone to cracking over time, allowing groundwater or moisture to seep into the cable well. A damp environment not only accelerates the aging of the cable sheath but can also potentially cause serious safety accidents such as short circuits and leakage, threatening the stable operation of the power system.

[0003] To address this issue, some moisture-proof cables with self-healing capabilities have emerged in existing technologies. A common approach is to install one or more cavities containing a sealant on the outside of the cable. When cracks appear in the sealing layer and water seeps in, the water enters the cavity, comes into contact with the sealant, mixes, and undergoes a chemical reaction to generate an expanding foam material, thereby sealing the crack.

[0004] However, these existing devices have significant technical drawbacks. First, their leak-sealing mechanism is often "one-off." Once a leak occurs, it typically causes all the sealant in the entire cavity to be activated and sprayed out. If the crack is small, this "overreaction" results in a huge waste of material and permanently disables the device, making it unable to cope with new cracks that may appear in other locations, leading to high maintenance costs and a short lifespan.

[0005] Secondly, a more critical technical issue lies in the triggering and mixing mechanism of the sealant. Many existing designs rely on a slowly advancing puncture structure to penetrate the membrane separating water and the sealant. This slow puncture process easily leads to the water and sealant that come into contact first rapidly mixing and solidifying near the puncture point, thus blocking the mixing channels for subsequent water and sealant. As a result, only a small amount of material participates in the reaction, and most of the sealant fails to come into contact with the water, leading to poor sealing results or even complete failure. Summary of the Invention

[0006] This application provides a buried moisture-proof cable, solving the problems of existing devices that can only be used once. When a gap appears on one side, the entire device is activated, resulting in only one-time repair. Furthermore, the rotating rod advances slowly, and if water mixes and solidifies with the sealant at the front during the puncture, the rear cannot contact the water, leading to poor repair or even complete failure. This application achieves localized and precise initial leak repair by distributing water and sealant into multiple independent storage ports. When a crack appears in the sealing material of a certain part of the cable assembly, only the storage port in that area is activated. This avoids the sealant around the entire cable assembly being sprayed out due to a small crack, achieving localized repair. The power component absorbs water and expands, pushing the rotating rod to rotate and advance in a straight line, thereby quickly tearing off the entire insulating membrane via the limiting rod. This avoids the problem of premature material solidification and channel blockage caused by slow puncture in existing technologies, ensuring that water and sealant can instantly and fully contact and mix to generate effective foaming material.

[0007] This application provides a buried moisture-proof cable, including a cable assembly and an insulation assembly; The cable assembly includes a cable, and the insulation assembly includes an insulation cylinder, a storage port, a power unit, a storage unit, and a rupture membrane; The storage components include an insulating membrane and a limiting rod; The insulating sleeve is installed outside the cable, and multiple storage ports are opened at both ends; The power unit is located inside the storage opening and is used to provide power for water absorption. The storage opening contains water and sealant; Both the isolation membrane and the rupture membrane are fixed to the inside of the storage opening and the outside of the isolation cylinder by an adhesive layer, and a limiting rod is fixed on the isolation membrane; The insulating membrane isolates water from the sealant; After the power component absorbs water, it provides power to move against the limit rod, causing the edge of the insulating membrane to detach from the storage port. Water and sealing agent mix to form foam material that is flushed out of the ruptured membrane and seals the crack.

[0008] As an improvement, there are two isolation components, which are arranged symmetrically. The isolation cylinder is arc-shaped, and the two isolation cylinders within the two isolation components form a cylindrical body that runs through its axis. The two insulating cylinders within the two insulating components are wrapped around the cable in a ring shape. The axes of the two insulating cylinders within the two insulating components are on the same straight line; The isolation assembly also includes mounting plates, of which there are two, and they are symmetrically installed on both sides of the isolation cylinder; The two isolation cylinders within the two isolation components are connected to the corresponding mounting plates by bolt threads, thus connecting the two isolation cylinders.

[0009] As an improvement, multiple storage ports at both ends of the insulating cylinder are opened in an arc shape at uniform intervals; The storage opening is cylindrical, and the axis of the storage opening is parallel to the axis of the isolation cylinder; The number of power components matches the number of storage openings, and they correspond one-to-one. Both the insulating membrane and the rupture membrane are made of cellophane, and the sealing agent inside the storage opening is a polyurethane grouting material.

[0010] As an improvement, the power components include a one-way valve, an expansion ring, a top plate, a rotating rod, a fixed plate, and a threaded port; Both the fixing plate and the top plate are cylindrical, and the axes of both the fixing plate and the top plate are on the same straight line as the axis of the storage opening; The fixing plate is fixed inside the storage opening; Water, sealant, and storage components are all located on the side of the fixed plate away from the storage opening; The top plate is slidably sealed inside the storage opening, and the top plate is located on the side of the fixed plate closest to the opening of the storage opening; A rotating rod is rotatably installed on the side of the top plate closest to the fixed plate; The check valve is fixed at the opening of the storage port, and the check valve only allows water to enter the storage port; The expansion ring is made of highly expandable water-swellable rubber. The expansion ring is stored in the storage port and is located between the check valve and the top plate. The fixed plate has a threaded opening on its side, and the rotating rod has a thread on its surface that matches the threaded opening. The end of the rotating rod away from the top plate is threaded and sealed inside the threaded opening.

[0011] As an improvement, the insulation component also includes vent holes; The number of vents matches the number of storage openings, and they correspond one-to-one. Vent holes are opened at both ends of the insulation cylinder, and one end of the vent hole is connected to the cavity between the top plate and the fixed plate.

[0012] As an improvement, the isolation component also includes fracture groups, the number of which is consistent with the number of storage ports, and they correspond one-to-one; The rupture group includes the rupture site; A rupture is made inside the storage opening; The rupture opening is connected to the outside of the isolation cylinder, and the rupture opening is located on the side of the fixed plate away from the storage opening; The rupture membrane is adhered to the inside of the rupture opening by an adhesive layer, and the rupture membrane seals the rupture opening; The limiting rod is cylindrical, and its axis is parallel to the axis of the insulating cylinder. One end of the rotating rod is fixed to the limit rod.

[0013] As an improvement, the cable assembly also includes a moisture-proof layer and an outer sheath layer; The cable sheath is equipped with a moisture-proof layer, and the moisture-proof layer is further equipped with an outer sheath. The two insulating cylinders within the two insulating components are arranged in a ring around the outer skin layer.

[0014] As an improvement, there are multiple storage components, with multiple storage components set in a single storage opening; The same storage unit includes two insulating membranes; Two insulating membranes are symmetrically arranged on the same limiting rod; The storage items in the same storage opening are arranged sequentially at intervals along the axial direction of the storage opening; Storage components also include inserts and slots. The end of the limit rod closest to the rotating rod is fixed in a slot, and the end of the limit rod furthest from the rotating rod is fixed in a plug. The inner ring of the slot and the outer ring of the insert have matching threads; The inner limit rod of the storage component closest to the rotating rod is not installed in a slot, and the inner limit rod of the storage component closest to the rotating rod is fixed on the rotating rod; The insulating film inside the storage component closest to the fixing plate is tightly attached to the fixing plate; The insulating membrane within the same storage opening divides the cavity within the storage opening into multiple unconnected storage cavities; Multiple sets of water and sealing agent are stored in the storage port, and the total amount of water and sealing agent is consistent with the number of storage cavities separated by the isolation membrane in the storage port. The amount of water and sealant stored in the same storage port is the same; Multiple groups of water and sealing agent are stored sequentially and alternately in storage chambers separated by an insulating membrane inside the storage opening; The number of rupture openings within the same rupture group is consistent with the number of storage cavities separated by the isolation membrane within the storage opening, and they correspond one-to-one. The number of ruptured membranes is consistent with the sum of the number of rupture openings in multiple rupture groups, and there is a one-to-one correspondence.

[0015] As an improvement, the storage chambers separated by the insulating membrane in each storage port are filled with water and sealing agent; When the two insulating membranes inside each storage unit detach from the storage opening, water and sealant mix together. The adhesive strength of the outer ring of the ruptured membrane is half that of the adhesive strength of the outer ring of the insulating membrane.

[0016] As an improvement, the isolation component also includes limit groups, the number of which is the same as the number of storage ports, and they correspond one-to-one; The limit switch assembly includes a limit port; Two rows of limiting ports are symmetrically opened inside the storage opening; The number of limiting ports in a single limiting group is twice the number of insulating membranes in a single storage port; Each insulating membrane corresponds to two limiting ports; Storage components also include positioning plates; The number of positioning plates in a single storage unit is consistent with the number of insulating membranes, and they correspond one-to-one. The positioning plate is fixed through the limiting rod, and the two ends of the positioning plate are respectively inserted into the two limiting holes; The insulating membrane is fixed on the positioning plate; The positioning plate is made of rubber, and its interior is hollow and filled with paraffin wax, which is high-melting-point paraffin wax.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: Firstly, the localized and precise initial leak repair involves distributing water and sealant into multiple independent storage ports. When a crack appears in the sealing material of a certain part of the cable assembly, only the storage port in that area is activated. This avoids the situation where a small crack causes all the sealant around the entire cable assembly to spray out, achieving localized repair. Secondly, the power component absorbs water and expands, pushing the rotating rod to rotate and move forward in a straight line, thereby quickly tearing off the entire insulating membrane through the limiting rod. This avoids the problem of material solidification and channel blockage caused by slow puncture in existing technologies, ensuring that water and sealant can contact and mix instantly and fully to generate an effective foaming material.

[0018] Secondly, it enables on-demand leak repair based on crack size. Multiple storage chambers separated by insulating membranes are set within a single storage opening. Small leaks only require material from the first storage chamber to seal; if the crack is large or the first repair fails, continued seepage will cause the power unit to continue operating, triggering the second and third storage chambers to release material sequentially. This achieves intelligent, tiered leak repair, addressing small leaks with small repairs and large leaks with large repairs. Traditional devices are disposable, while this design, through tiered release, allows a single storage opening to handle multiple leaks or a single severe leak, significantly extending the maintenance cycle and service life of the cable assembly moisture-proof system and reducing long-term maintenance costs.

[0019] Thirdly, the positioning plates, with their end fittings inserted into limiting ports, provide additional radial support for each limiting rod. This effectively prevents the limiting rods and the sealing membrane from shaking or deforming during transportation, installation, or external vibrations, significantly reducing the risk of accidental triggering of the device under non-leaking conditions. The high-melting-point paraffin filling inside the positioning plates provides support under normal conditions, but will rupture under the strong push of the rotating rod, without hindering the tearing off of the sealing membrane. Even after rupture, the positioning plates remain fixed to the limiting rods. As the rotating rod advances, the positioning plates agitate the mixed water and sealing agent, promoting a faster and more uniform chemical reaction, resulting in a higher-quality foaming material. Attached Figure Description

[0020] Figure 1 This is a perspective view of an underground moisture-proof cable according to the present invention; Figure 2This is a cross-sectional view of the insulating cylinder of an underground moisture-proof cable according to the present invention. Figure 3 This invention relates to a buried moisture-proof cable. Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This invention relates to a single storage component structure for an underground moisture-proof cable. Figure 1 ; Figure 5 This invention relates to a single storage component structure for an underground moisture-proof cable. Figure 2 ; Figure 6 This is a schematic diagram of the threaded opening of a buried moisture-proof cable according to the present invention. Figure 7 This is a perspective view of the insulation component of an underground moisture-proof cable according to the present invention.

[0021] In the diagram: 100, cable assembly; 110, cable; 120, moisture-proof layer; 130, outer sheath; 200, insulation component; 210, insulation cylinder; 211, storage port; 212, vent; 213, rupture port; 214, limit port; 220, power component; 221, one-way valve; 222, expansion ring; 223, top plate; 224, rotating rod; 225, fixing plate; 226, threaded port; 230, storage component; 231, insulation membrane; 232, limit rod; 233, insert block; 234, slot; 235, positioning plate; 240, rupture membrane; 250, mounting plate. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0023] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Example 1: As Figures 1-7As shown, this application discloses an underground moisture-proof cable, including a cable assembly 100 and an insulation assembly 200; The cable assembly 100 includes a cable 110, a moisture barrier 120, and a sheath 130; The isolation assembly 200 includes an isolation cylinder 210, a storage port 211, a vent 212, a rupture assembly, a power component 220, a storage component 230, a rupture membrane 240, and a mounting plate 250. Storage component 230 includes an insulating membrane 231 and a limiting rod 232; The insulating cylinder 210 is fitted over the cable 110, and multiple storage ports 211 are opened at both ends; There are two isolation components 200, and they are arranged symmetrically. The isolation cylinder 210 is arc-shaped, and the two isolation cylinders 210 inside the two isolation components 200 form a cylindrical body that runs through its axis. The two insulating cylinders 210 inside the two insulating components 200 are wrapped in a ring around the cable 110; The axes of the two isolation cylinders 210 within the two isolation components 200 are on the same straight line.

[0026] There are two mounting plates 250, which are symmetrically installed on both sides of the insulating cylinder 210; The two isolation cylinders 210 within the two isolation components 200 are connected to the corresponding mounting plate 250 by bolt threads, thus connecting the two isolation cylinders 210.

[0027] Specifically, two insulating cylinders 210 are installed outside the cable 110 and positioned at the cable passage hole in the cable well; the mounting plate 250 is connected by bolts and threads to fit the two insulating cylinders 210 over the cable 110, facilitating installation and disassembly. The cable 110 is covered with a moisture-proof layer 120, and the moisture-proof layer 120 is covered with an outer sheath layer 130; The two insulating cylinders 210 within the two insulating components 200 are wrapped in a ring around the outer skin layer 130.

[0028] Specifically, the cable 110 is moisture-proofed by the moisture-proof layer 120 and protected by the outer sheath layer 130.

[0029] Multiple storage ports 211 at both ends of the insulating cylinder 210 are opened in an arc shape at uniform intervals; The power unit 220 is installed inside the storage opening 211, and the power unit 220 is used to provide power for water absorption; The storage opening 211 is cylindrical, and the axis of the storage opening 211 is parallel to the axis of the isolation cylinder 210; The number of power components 220 is the same as the number of storage ports 211, and they correspond one-to-one.

[0030] Storage port 211 contains water and sealant; Both the insulating membrane 231 and the rupture membrane 240 are made of cellophane, and the sealing agent inside the storage port 211 is a polyurethane grouting material.

[0031] Specifically, polyurethane grouting materials undergo an expansion reaction after being mixed with water. The resulting foam seals the gaps between the cable well and the cable joint, preventing groundwater from seeping into the cable well.

[0032] Multiple storage ports 211 are arranged in an arc shape. When the sealing material on one side cracks and leaks water, water will only enter the storage port 211 on that side, activating the internal power component 220 and storage component 230 to seal the crack on that side.

[0033] Both the insulating membrane 231 and the ruptured membrane 240 are fixed to the inside of the storage port 211 and the outside of the insulating cylinder 210 by adhesive layers, and a limiting rod 232 is fixed on the insulating membrane 231. The limiting rod 232 is cylindrical, and the axis of the limiting rod 232 is parallel to the axis of the insulating cylinder 210; The 231 insulating membrane isolates water from the sealant. After the power component 220 absorbs water, it provides power to move against the limit rod 232, causing the edge of the insulating membrane 231 to detach from the storage port 211. Water and sealing agent mix to form foam material that is flushed out of the ruptured membrane 240 and seals the crack.

[0034] Specifically, when the sealing material on one side cracks and leaks water, the power component 220 absorbs water and provides power to move against the limit rod 232, causing the edge of the isolation membrane 231 to detach from the inner wall of the storage port 211, so that the isolated water and the sealing agent can mix. After the water and the sealing agent mix, they form a foam material that is flushed out of the ruptured membrane 240 to seal the crack in the sealing material.

[0035] Specifically, the limiting rod 232 can drive the isolation membrane 231 to quickly detach from the storage port 211, avoiding slow cracking at the edges, which would cause some water and some sealant to mix and solidify over a long period of time, resulting in blockage and preventing subsequent water and sealant from mixing into the foamed material.

[0036] When subjected to a pushing force, the cellophane-material insulating membrane 231 can quickly detach from the storage opening 211, preventing the interception of water or sealant.

[0037] The power component 220 includes a one-way valve 221, an expansion ring 222, a top plate 223, a rotating rod 224, a fixing plate 225, and a threaded port 226; Both the fixing plate 225 and the top plate 223 are cylindrical, and the axes of both the fixing plate 225 and the top plate 223 are on the same straight line as the axis of the storage opening 211. The fixing plate 225 is fixed inside the storage opening 211; Water, sealant, and storage unit 230 are all located on the side of the fixing plate 225 away from the opening of the storage port 211; The top plate 223 is slidably and sealingly connected to the storage opening 211, and the top plate 223 is located on the side of the fixed plate 225 near the opening of the storage opening 211; A rotating rod 224 is rotatably installed on the side of the top plate 223 near the fixed plate 225; One end of the rotating rod 224 is fixed to the limiting rod 232.

[0038] One-way valve 221 is fixed at the opening of storage port 211, and one-way valve 221 only allows water to enter storage port 211; The expansion ring 222 is a highly expandable water-swellable rubber. The expansion ring 222 is stored in the storage port 211 and is located between the one-way valve 221 and the top plate 223. The fixed plate 225 has a threaded opening 226 on its side, and the rotating rod 224 has a thread on its surface that matches the threaded opening 226. The end of the rotating rod 224 away from the top plate 223 is threadedly sealed and connected to the threaded opening 226.

[0039] Specifically, when the sealing material between the cable well and the cable assembly 100 cracks, water enters the storage port 211 through the one-way valve 221 and expands through the expansion ring 222. The expanding ring 222 continuously abuts against the top plate 223, causing the rotating rod 224 to move. Since the rotating rod 224 is threaded into the threaded opening 226, the rotating rod 224 can rotate. During the rotation, it moves forward together with the limit rod 232. The moving limit rod 232 tears the barrier membrane 231 from the inner wall of the storage port 211, allowing the water separated by the barrier membrane 231 to come into contact with and mix with the sealing agent, causing expansion.

[0040] The number of vent holes 212 is the same as the number of storage ports 211, and they correspond one-to-one. The insulating cylinder 210 has exhaust holes 212 at both ends, and one end of the exhaust hole 212 is connected to the cavity between the top plate 223 and the fixing plate 225.

[0041] Specifically, the gas generated during the movement of the top plate 223 is discharged through the vent 212, so as to avoid the top plate 223 being obstructed during movement due to the continuous compression of gas caused by the sliding seal connection inside the storage port 211.

[0042] The number of fracture groups is consistent with the number of storage ports 211, and they correspond one-to-one; The rupture group includes rupture point 213; A rupture 213 is made inside the storage opening 211; The rupture opening 213 is connected to the outside of the isolation cylinder 210, and the rupture opening 213 is located on the side of the fixing plate 225 away from the opening of the storage port 211; The rupture membrane 240 is adhered to the rupture opening 213 by an adhesive layer, and the rupture membrane 240 seals the rupture opening 213.

[0043] Specifically, the foam material produced by mixing water and sealing agent compresses the ruptured membrane 240, causing the edges of the ruptured membrane 240 to tear, thereby allowing the foam material to be continuously discharged from the rupture opening 213.

[0044] When subjected to a pushing force, the cellophane-material rupture membrane 240 can quickly detach from the rupture opening 213.

[0045] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: Localized and precise initial leak repair involves distributing water and sealant into multiple independent storage ports 211. When a crack appears in the sealing material of a certain part of the cable assembly 100, only the storage port 211 in that area will be activated. This avoids the sealant spraying out all the sealant material around the entire cable assembly 100 due to a small crack, achieving localized repair. The power component 220 absorbs water and expands, pushing the rotating rod 224 to rotate and move forward in a straight line, thereby quickly tearing off the entire insulating membrane 231 through the limiting rod 232. This avoids the problem of material solidification and channel blockage caused by slow puncture in the prior art, ensuring that water and sealant can contact and mix instantly and fully to generate an effective foaming material.

[0046] Example 2: In the above embodiment, after installation, the cable assembly 100 and the cable well will develop cracks of different sizes over a long period of use. The different crack sizes result in different levels of water seepage. The device cannot spray an appropriate amount of foaming material to seal the cracks based on the size of the seepage; therefore, the device can only be used once on one side. Based on this, the solution in Example 1 is improved, such as... Figures 3-5 As shown: There are multiple storage components 230, and multiple storage components 230 are set in a single storage opening 211; The same storage unit 230 includes two insulating membranes 231; Two insulating membranes 231 are symmetrically arranged on the same limiting rod 232; The storage items 230 in the same storage opening 211 are arranged at intervals along the axial direction of the storage opening 211; Storage component 230 also includes insert block 233 and slot 234. The end of the limiting rod 232 near the rotating rod 224 is fixed to the slot 234, and the end of the limiting rod 232 away from the rotating rod 224 is fixed to the insert block 233; The inner ring of slot 234 and the outer ring of insert 233 have mutually compatible threads; Specifically, when the limiting rod 232 in the previous storage unit 230 continues to move backward, the insert block 233 at one end of the previous limiting rod 232 can be inserted into the slot 234 in the limiting rod 232 in the next storage unit 230.

[0047] The inner limit rod 232 of the storage piece 230 closest to the rotating rod 224 is not installed in the slot 234, and the inner limit rod 232 of the storage piece 230 closest to the rotating rod 224 is fixed on the rotating rod 224; The inner insulating membrane 231 of the storage component 230 closest to the fixing plate 225 is tightly attached to the fixing plate 225; The insulating membrane 231 within the same storage opening 211 divides the cavity within the storage opening 211 into multiple non-interconnected storage cavities; The storage port 211 contains multiple sets of water and sealing agent, and the total amount of water and sealing agent is consistent with the number of storage cavities separated by the isolation membrane 231 inside the storage port 211. The amount of water and sealant stored in the same storage port 211 is the same; Multiple groups of water and sealing agent are stored sequentially and alternately in the storage cavity separated by the insulating membrane 231 inside the storage port 211; The number of rupture openings 213 within the same rupture group is consistent with the number of storage cavities separated by the isolation membrane 231 within the storage opening 211, and they correspond one-to-one. The number of ruptured membranes 240 is consistent with the sum of the number of rupture openings 213 in multiple rupture groups, and they correspond one-to-one.

[0048] Specifically, by setting storage components 230 in the same storage opening 211, and ensuring that each storage component 230 does not interfere with the others; when the expansion ring 222 expands, it first contacts the storage component 230 closest to the fixed plate 225, causing the insulating membrane 231 inside the storage component 230 to rupture, allowing the water inside to mix with the sealing agent to form the first batch of foam material. The foam material is then discharged outside the device by squeezing the ruptured membrane 240 of the corresponding storage cavity to perform the leak sealing operation. If the first batch of foaming material does not completely seal the crack, the expansion ring 222 will continue to absorb water and expand, and will continue to move forward against the limit rod 232. It will be threaded into the slot 234 through the insert 233 at one end, which will cause the isolation membrane 231 in the next storage component 230 to rupture, so that the water inside mixes with the sealing agent to form the second batch of foaming material. The foaming material is discharged out of the device by squeezing the ruptured membrane 240 of the corresponding storage cavity, and the sealing operation is performed again. If the crack still exists, the expansion ring 222 will continue to absorb water and expand, repeating the above process again.

[0049] Each storage cavity separated by the insulating membrane 231 inside the storage port 211 is filled with water and sealing agent; Specifically, the storage cavities separated by the insulating membrane 231 in each storage port 211 are filled with water and sealing agent, so that the pressure on the insulating membrane 231 will not change regardless of the installation posture of the device, thus ensuring the stability of the edge adhesive layer.

[0050] When the two insulating membranes 231 inside each storage unit 230 detach from the storage opening 211, water and sealant mix together. The adhesive strength of the outer ring of the ruptured membrane 240 is half that of the adhesive strength of the outer ring of the insulating membrane 231.

[0051] Specifically, because the adhesive strength of the outer ring of the ruptured membrane 240 is weaker than that of the outer ring of the insulating membrane 231, the water and sealant in the corresponding storage unit 230 mix and form foam material. This foam material will first come into contact with the adhesive layer of the outer ring of the ruptured membrane 240, causing the foam material to be discharged. The foam material will not come into contact with the next unused storage unit 230, allowing the device to continue to be used normally.

[0052] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: This system enables on-demand leak repair based on crack size. Multiple storage chambers separated by insulating membranes 231 are set within a single storage opening 211. Small leaks can be sealed by consuming material from the first storage chamber 230. If the crack is large or the first repair fails, continued seepage will cause the power unit 220 to continue operating, triggering the second and third storage chambers 230 to release material sequentially. This achieves intelligent, tiered leak repair, addressing small leaks with small repairs and large leaks with large repairs. Traditional devices are one-time applications on one side, while this design, through tiered release, allows a single storage opening 211 to handle multiple leaks or a single severe leak, significantly extending the maintenance cycle and service life of the cable assembly 100 moisture-proof system and reducing long-term maintenance costs.

[0053] Example 3: During use, the above-mentioned device may shake during transportation and movement, causing the insulating membrane 231, which is not directly fixed to the rotating rod 224, and the limiting rod 232 to shake, resulting in accidental breakage. Furthermore, the mixing effect of the device is poor during use. Therefore, improvements are made to the solution in Example 2, such as... Figures 3-5 As shown: The isolation component 200 also includes limit groups, the number of which is the same as the number of storage ports 211, and they correspond one-to-one. The limit assembly includes a limit port 214; Two rows of limiting ports 214 are symmetrically opened inside the storage port 211; The number of limit ports 214 in a single limit group is twice the number of isolation membranes 231 in a single storage port 211; A single insulating membrane 231 corresponds to two limiting ports 214; Storage component 230 also includes positioning plate 235; The number of positioning plates 235 inside a single storage component 230 is the same as the number of insulating membranes 231, and they correspond one-to-one. The positioning plate 235 is fixed through the limiting rod 232, and the two ends of the positioning plate 235 are respectively inserted into the two limiting ports 214; The insulating membrane 231 is fixed on the positioning plate 235; The positioning plate 235 is made of rubber. The positioning plate 235 is hollow inside and filled with paraffin wax. The paraffin wax filled inside the positioning plate 235 is high melting point paraffin wax.

[0054] Specifically, the positioning plate 235, which is hollow inside and filled with paraffin, supports the limiting rod 232 to prevent the limiting rod 232, which is not fixed to the rotating rod 224, from shaking when there is a small amount of shaking, which would cause the device to be accidentally activated. Furthermore, when it is necessary to seal the crack, the force generated by the rotating rod 224 can push the paraffin inside the positioning plate 235 to break, without affecting the separation of the isolation membrane 231 from the inner wall of the storage opening 211. Even after the rupture, the positioning plate 235 remains mounted on the limiting rod 232 and can be rotated by the rotating rod 224 to continuously agitate the water and sealant.

[0055] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages: The positioning plate 235, inserted into the limiting ports 214 at both ends, provides additional radial support for each limiting rod 232. This effectively prevents the limiting rods 232 and the insulating membrane 231 from shaking or deforming during transportation, installation, or external vibration, greatly reducing the risk of accidental triggering of the device under non-leaking conditions. The high-melting-point paraffin filling inside the positioning plate 235 provides support under normal conditions, but will break under the strong push of the rotating rod 224, without hindering the tearing off of the insulating membrane 231. The broken positioning plate 235 remains fixed to the limiting rod 232. When the rotating rod 224 rotates and advances, the positioning plate 235 agitates the mixed water and sealing agent, thereby promoting a faster and more uniform chemical reaction and generating a higher quality foaming material.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A buried moisture-proof cable, characterized in that, Includes cable assembly (100) and insulation assembly (200); The cable assembly (100) includes a cable (110), and the insulation assembly (200) includes an insulation cylinder (210), a storage port (211), a power unit (220), a storage unit (230), and a rupture membrane (240). The storage component (230) includes an insulating membrane (231) and a limiting rod (232); The insulating cylinder (210) is fitted over the cable (110) and has multiple storage ports (211) at both ends. The power unit (220) is installed inside the storage opening (211), and the power unit (220) is used to provide power for water absorption; Storage port (211) contains water and sealant; The insulating membrane (231) and the ruptured membrane (240) are both fixed inside the storage opening (211) and outside the insulating cylinder (210) by adhesive layer, and a limiting rod (232) is fixed on the insulating membrane (231). The insulating membrane (231) isolates water from the sealant; The power unit (220) provides power after absorbing water, and moves against the limit rod (232) to make the edge of the insulating membrane (231) separate from the storage port (211). The water and the sealing agent mix to form a foam material that is flushed out of the ruptured membrane (240) and seals the crack.

2. The buried moisture-proof cable as described in claim 1, characterized in that, There are two isolation components (200), and they are arranged symmetrically. The insulating cylinder (210) is arc-shaped, and the two insulating cylinders (210) inside the two insulating components (200) form a cylindrical body that runs through its axis; Two insulating cylinders (210) within the two insulating components (200) are wrapped in a ring around the cable (110); The axes of the two insulating cylinders (210) within the two insulating components (200) are on the same straight line; The isolation assembly (200) also includes two mounting plates (250), which are symmetrically mounted on both sides of the isolation cylinder (210); Two isolation cylinders (210) within two isolation components (200) are connected to the corresponding mounting plate (250) by bolt threads, thus connecting the two isolation cylinders (210).

3. The buried moisture-proof cable as described in claim 2, characterized in that, Multiple storage ports (211) at both ends of the insulating cylinder (210) are opened in an arc shape at uniform intervals; The storage opening (211) is a cylinder, and the axis of the storage opening (211) is parallel to the axis of the isolation cylinder (210); The number of power components (220) is consistent with the number of storage ports (211), and they correspond one-to-one; The insulating membrane (231) and the rupture membrane (240) are both made of cellophane, and the sealing agent in the storage opening (211) is a polyurethane grouting material.

4. The buried moisture-proof cable as described in claim 1, characterized in that, The power component (220) includes a one-way valve (221), an expansion ring (222), a top plate (223), a rotating rod (224), a fixing plate (225), and a threaded port (226). Both the fixing plate (225) and the top plate (223) are cylindrical, and the axes of both the fixing plate (225) and the top plate (223) are on the same straight line as the axis of the storage opening (211); The fixing plate (225) is fixed inside the storage opening (211); Water, sealant, and storage unit (230) are all located on the side of the fixing plate (225) away from the opening of the storage port (211); The top plate (223) is slidably sealed inside the storage opening (211), and the top plate (223) is located on the side of the fixed plate (225) near the opening of the storage opening (211); A rotating rod (224) is rotatably installed on the side of the top plate (223) near the fixed plate (225); A one-way valve (221) is fixed at the opening of the storage port (211), and the one-way valve (221) only allows water to enter the storage port (211); The expansion ring (222) is a highly expandable water-swellable rubber. The expansion ring (222) is stored in the storage port (211) and is located between the one-way valve (221) and the top plate (223). The fixed plate (225) has a threaded opening (226) on its side. The rotating rod (224) has a thread that matches the threaded opening (226) on its surface. The end of the rotating rod (224) away from the top plate (223) is threaded and sealed in the threaded opening (226).

5. The buried moisture-proof cable as described in claim 4, characterized in that, The insulation component (200) also includes an vent (212); The number of vent holes (212) is the same as the number of storage ports (211), and they correspond one-to-one; The insulation cylinder (210) has exhaust holes (212) at both ends, and one end of the exhaust hole (212) is connected to the cavity between the top plate (223) and the fixing plate (225).

6. The buried moisture-proof cable as described in claim 4, characterized in that, The isolation component (200) also includes a rupture group, the number of which is consistent with the number of storage ports (211) and corresponds one-to-one; The rupture group includes the rupture opening (213); A rupture opening (213) is made inside the storage opening (211); The rupture (213) is connected to the outside of the isolation cylinder (210), and the rupture (213) is located on the side of the fixing plate (225) away from the opening of the storage port (211); The rupture membrane (240) is adhered to the rupture opening (213) by an adhesive layer, and the rupture membrane (240) seals the rupture opening (213). The limiting rod (232) is cylindrical, and the axis of the limiting rod (232) is parallel to the axis of the insulating cylinder (210); One end of the rotating rod (224) is fixed to the limiting rod (232).

7. The buried moisture-proof cable as described in claim 4, characterized in that, The cable assembly (100) also includes a moisture barrier (120) and a sheath (130). The cable (110) is covered with a moisture-proof layer (120), and the moisture-proof layer (120) is covered with an outer sheath layer (130). Two insulating tubes (210) within the two insulating components (200) are wrapped in a ring around the outer skin layer (130).

8. The buried moisture-proof cable as described in claim 4, characterized in that, There are multiple storage components (230), and multiple storage components (230) are set in a single storage port (211); The same storage unit (230) includes two insulating membranes (231); Two insulating membranes (231) are symmetrically arranged on the same limiting rod (232); The storage items (230) in the same storage opening (211) are arranged sequentially at intervals along the axial direction of the storage opening (211); The storage component (230) also includes a plug (233) and a slot (234). The end of the limiting rod (232) near the rotating rod (224) is fixed to the slot (234), and the end of the limiting rod (232) away from the rotating rod (224) is fixed to the insert (233). The inner ring of the slot (234) and the outer ring of the insert (233) have mutually compatible threads; The inner limit rod (232) of the storage piece (230) closest to the rotating rod (224) is not installed in the slot (234), and the inner limit rod (232) of the storage piece (230) closest to the rotating rod (224) is fixed on the rotating rod (224); The inner insulating membrane (231) of the storage piece (230) closest to the fixing plate (225) is tightly attached to the fixing plate (225); The insulating membrane (231) in the same storage port (211) divides the cavity inside the storage port (211) into multiple unconnected storage cavities; Multiple sets of water and sealing agent are stored in the storage port (211), and the total number of water and sealing agent is the same as the number of storage cavities separated by the isolation membrane (231) in the storage port (211); The amount of water and sealant stored in the same storage port (211) is the same; Multiple groups of water and sealing agent are stored sequentially and alternately in storage chambers separated by an insulating membrane (231) inside the storage port (211); The number of rupture openings (213) in the same rupture group is consistent with the number of storage cavities separated by the isolation membrane (231) in the storage opening (211), and they correspond one-to-one; The number of ruptured membranes (240) is consistent with the sum of the number of rupture openings (213) in multiple rupture groups, and they correspond one-to-one.

9. A buried moisture-proof cable as described in claim 8, characterized in that, Each storage opening (211) is separated by an insulating membrane (231) and its storage chamber is filled with water and sealant; When the two insulating membranes (231) inside each storage unit (230) are removed from the storage opening (211), water and sealant are mixed. The adhesive strength of the outer ring of the ruptured membrane (240) is half that of the adhesive strength of the outer ring of the insulating membrane (231).

10. The buried moisture-proof cable as described in claim 8, characterized in that, The isolation component (200) also includes limit groups, the number of which is consistent with the number of storage ports (211) and corresponds one-to-one; The limit group includes a limit port (214); Two rows of limiting ports (214) are symmetrically opened inside the storage port (211); The number of limiting ports (214) in a single limiting group is twice the number of isolation membranes (231) in a single storage port (211); A single insulating membrane (231) corresponds to two limiting ports (214); The storage unit (230) also includes a positioning plate (235); The number of positioning plates (235) inside a single storage unit (230) is the same as the number of insulating membranes (231), and they correspond one-to-one; The positioning plate (235) is fixed through the limiting rod (232), and the two ends of the positioning plate (235) are respectively inserted into the two limiting ports (214); The insulating membrane (231) is fixed on the positioning plate (235); The positioning plate (235) is made of rubber. The positioning plate (235) is hollow inside and filled with paraffin wax. The paraffin wax filled inside the positioning plate (235) is high melting point paraffin wax.

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