A detachable elastic leak-stopper

Abstract

The application discloses a detachable elastic leakage-stopping patch and belongs to the technical field of container leakage repairing, which comprises, from top to bottom, an elastic layer, a flexible base layer and a flexible surface layer which are sequentially compounded; a plurality of installation holes are vertically arranged on the flexible base layer, and a magnetic positioning assembly is installed on each installation hole, so that the magnetic positioning assemblies are distributed in the flexible base layer in a spaced manner and do not directly contact each other; when the flexible surface layer of the leakage-stopping patch is close to the surface of a damaged part of a ferrous container or a ferrous pipeline, the flexible surface layer is pressed against the surface of the damaged part of the ferrous container under the action of the elastic layer, the flexible surface layer is deformed to adapt to the damaged part of the container, a reliable sealing barrier is formed to prevent liquid leakage from continuing to seep out, and the magnetic positioning assembly does not constitute the main source of sealing pressure, so that the leakage-stopping patch can be used for rapid leakage-stopping and repairing of oil and gas, chemical and storage and transportation facilities.

Description

Technical Field

[0001] This invention relates to the field of container leak repair technology, and in particular to a detachable elastic leak-sealing patch suitable for sealing leaks in iron containers or iron pipelines in oil and gas, chemical and storage facilities. Background Technology

[0002] Patent CN223677356U discloses a magnetic leak-sealing patch. This patch includes a rubber patch with a ring-shaped magnetic ring fixedly connected to its center. The rubber patch is 6cm thick, and reinforcing iron plates are fixed at each of the four corners. A splicing plate is placed on top of each reinforcing iron plate. The patch, through the magnetic ring, can quickly adhere to the metal leak, requiring no complex construction steps or specific conditions, making it simple and quick to operate. The reinforcing iron plates have through-holes on both the top and bottom sides, and the splicing plate has a positioning hole with through-holes on both the top and bottom sides at its center. A tubular sleeve is fixedly connected to the outside of the splicing plate, and a connecting rod is inserted inside the sleeve. The connecting rod has a cylindrical body, and a sleeve is fitted onto the side of the connecting rod away from the sleeve. A strap made of nylon is fixedly connected to the side of the sleeve away from the connecting rod. Its drawbacks are that the structure of the magnetic ring and the reinforcing iron sheet makes the sealing patch too rigid, making it difficult to fit tightly to curved or uneven damaged areas. In addition, its thickness (6cm) limits the flexibility of operation. The concentrated magnetic force distribution leads to uneven sealing pressure distribution, which can easily create leakage channels.

[0003] Patent CN207796402U discloses an adhesive leak-sealing device. This device includes a main body, which is primarily composed of a suction cup layer, a magnetic powder layer, and an adhesive tape arranged sequentially from the inside out. The adhesive tape serves as a carrier layer, upon which the magnetic powder layer is placed, and the suction cup layer is placed on top of the magnetic powder layer. Its structure is simple, and its design is novel and reasonable. It can be applied to leak sealing in production equipment and pipelines, as well as in everyday situations requiring leak sealing. It is easy and simple to operate, effectively and promptly sealing gaps and leaks, reducing the time required to repair cracks and leaks in smooth surfaces, and preventing losses caused by leaks. However, its disadvantages include the combined structure of the suction cup layer, magnetic powder layer, and adhesive tape. The adhesive tape's adhesion decreases in oily or humid environments, the suction cup layer has poor sealing performance on non-smooth surfaces, and while the magnetic powder layer has a uniform magnetic force distribution, it lacks elastic deformation and is difficult to adapt to dynamic pressure fluctuations.

[0004] Patent CN201712995U discloses a magnetic pressure sealing patch for emergency leak sealing in various transport tanks, pressure vessels, and pipelines. A magnetic shielding sleeve is fixed to the center of a rubber block and connected to it as a whole. The magnetic block is composed of fragmented magnetic blocks distributed throughout the cavity of the magnetic shielding sleeve. The magnetic shielding sleeves are in contact with each other and continuously arranged along the circumference to form unit magnetic blocks. The cross-section of the rubber block is square, rectangular, or circular. Its disadvantages are that while the magnetic force is continuous due to the fragmented magnetic blocks filling the cavity of the magnetic shielding sleeve, the overall elasticity is lacking. The sealing pressure relies entirely on magnetic adsorption, resulting in poor adaptability to curved sections of pipelines or sharp corners of containers. Furthermore, since the magnetic block and rubber block are integrally molded, they are difficult to disassemble and replace, leading to high maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a detachable elastic sealing patch that uses an elastic structure as the primary source of sealing and magnetic components only for auxiliary positioning, thereby improving adaptability and safety.

[0006] The technical solution adopted in this invention is as follows.

[0007] A removable elastic leak-sealing patch is characterized by comprising, from top to bottom, an elastic layer, a flexible substrate layer, and a flexible surface layer sequentially laminated together; the flexible substrate layer has a plurality of vertically arranged mounting holes, and each mounting hole is fitted with a magnetic positioning component, thereby distributing the magnetic positioning components in a spaced-apart manner within the flexible substrate layer and ensuring that the magnetic positioning components do not directly contact each other; when the flexible surface layer of the leak-sealing patch approaches the ferromagnetic surface to be repaired, the flexible surface layer, under the action of the elastic layer, presses against the surface to be repaired to form a reliable sealing barrier, and the magnetic positioning components do not constitute the main source of sealing pressure.

[0008] Its beneficial effects are as follows.

[0009] The leak-sealing patch is quickly pre-positioned and fixed to the base using a magnetic positioning component. The seal is then achieved through the uniform rebound force generated by the compressive deformation of the elastic layer. The magnetic positioning component only provides auxiliary attraction to pull the entire patch tightly against the repaired surface, preventing excessive compression of the elastic layer due to excessive local magnetic force, thus avoiding insufficient local sealing pressure caused by uneven magnetic force distribution. This force distribution design significantly reduces the difficulty of on-site operation for pressurized leak sealing, eliminating the need for additional binding or welding fixation processes. It also ensures uniform pressure at the sealing interface, improving sealing reliability, and meets the design requirements for detachability. It does not cause additional damage to the repaired iron container or pipe, facilitating thorough subsequent repair of the damaged area and enabling the leak-sealing patch to be reused.

[0010] The system employs magnetic positioning components for detachable fixing, ensuring convenient operation without damaging the substrate surface. The flexible and deformable nature of the elastic matrix layer allows it to tightly conform to the ferromagnetic surfaces being repaired with varying curvatures. The synergistic effect of the elastic layer and the flexible surface layer, through the elastic deformation of the flexible surface layer, fills irregular and broken areas of the ferromagnetic surface being repaired, forming a reliable sealing barrier for rapid leak sealing. The elastic deformation of the elastic layer further compresses the ferromagnetic surface being repaired. The magnetic positioning components are spaced apart and do not directly contact each other, effectively preventing positional shifts or aggregation due to magnetic attraction. This ensures that each component is evenly distributed within the elastic matrix, allowing the attraction force to act uniformly on the elastic and flexible surface layers, guaranteeing a tight fit between the leak-sealing patch and the ferromagnetic surface being repaired. The absence of direct contact between the magnetic positioning components reduces wear caused by collisions and friction. The spaced-out structural design of the magnetic positioning components does not compromise the flexible and deformable nature of the elastic matrix layer, ensuring that the leak-sealing patch can still flexibly adapt to the surfaces of ferromagnetic surfaces with varying curvatures, maintaining good fit and improving the sealing stability of the product under complex operating conditions. The overall structure is reasonably designed, and the functions of each layer complement each other. It effectively solves the problems of complex operation, easy influence of substrate shape on sealing effect and short service life of traditional leak sealing methods. It can be used for rapid repair of damaged parts of iron containers or iron pipes.

[0011] As a preferred technical solution, the flexible surface layer is made of one or more composites of silicone, polyurethane elastomer, thermoplastic elastomer, soft rubber, elastic fiber fabric, or Teflon. By selecting one or more composites of silicone, polyurethane elastomer, thermoplastic elastomer, soft rubber, elastic fiber fabric, or Teflon to form the flexible surface layer, the advantages of different materials can be fully utilized. Silicone has excellent high and low temperature resistance and chemical stability, and can adapt to extreme temperature environments and corrosive media scenarios; polyurethane elastomer has excellent wear resistance and tear strength, and can effectively resist leakage erosion and friction damage; Teflon material has an extremely low coefficient of surface friction and anti-stick properties, preventing impurities in the leakage from adhering and affecting the sealing effect; elastic fiber fabric can enhance the structural strength and flexibility of the flexible surface layer and improve its deformation recovery ability. When multiple materials are used in combination, the advantages of each material can be integrated, so that the flexible surface layer has good elastic deformation ability, weather resistance, corrosion resistance and durability at the same time. It optimizes the filling effect on irregular gaps and holes of leakage, extends the effective sealing time, and broadens the application of leak-sealing tape in many industries such as chemical iron pipelines, ship equipment, iron cans and so on.

[0012] As a preferred technical solution, the flexible surface layer has micro-textures or annular protrusions away from the flexible substrate layer. The micro-textures or annular protrusions on the surface of the flexible surface layer increase its contact area with the irregular gaps and holes in the ferromagnetic repair surface. This allows the flexible surface layer to be more fully embedded into the tiny uneven areas of the gap under the attraction of the magnetic positioning component, further improving the interface sealing performance. The micro-textures effectively guide air out of the gap, reducing residual air bubbles at the sealing interface and avoiding the risk of seal failure due to air bubbles. The micro-protrusion structure also enhances the friction between the flexible surface layer and the substrate surface, improving the anti-slip performance of the sealing patch and ensuring stable adhesion even under leakage pressure or vibration environments.

[0013] As a preferred technical solution, the flexible surface layer is coated with an anti-corrosion coating. By applying an anti-corrosion coating to the surface of the flexible surface layer, it can effectively block the erosion of corrosive media such as acids, alkalis, and salt spray in the leaked liquid; the anti-corrosion coating can enhance the chemical stability of the flexible surface layer, enabling it to maintain good elastic deformation capacity and sealing effect under strong corrosive conditions such as leaks in chemical iron pipelines and corrosion of marine equipment; the anti-corrosion coating usually has smooth and anti-adhesion surface characteristics, which can reduce the deposition of impurities and dirt in the leaked liquid, and facilitate cleaning and reuse after the leak-sealing patch is removed.

[0014] As a preferred technical solution, the thickness of the flexible surface layer is 0.5-1mm. When the thickness is less than 0.5mm, the elastic reserve of the flexible surface layer is insufficient, making it difficult to fully fill the irregular gaps of the leakage holes, and it is easily damaged due to leakage pressure or friction; when the thickness exceeds 1mm, it will increase the rigidity of the flexible surface layer and reduce its bonding deformation efficiency according to the curvature of the substrate surface and the shape of the gap.

[0015] The thickness of the flexible substrate layer is 5-8 mm. When the thickness is less than 4 mm, the sealing layer is insufficient to cover deep leakage holes or fill large gaps, and its resistance to leakage pressure is weak, making it prone to localized damage or puncture under high-pressure leakage impact, leading to sealing failure. When the thickness exceeds 8 mm, the rigidity of the sealing layer increases significantly, and its adaptability to the curvature of the substrate surface and the shape of the gap decreases, making it difficult to tightly adhere to irregular surfaces. This also increases the overall weight of the product, increases the difficulty of operation, and the magnetic positioning component's attraction force needs to penetrate a thicker sealing layer, increasing force transmission loss and affecting the pressing effect on the sealing interface.

[0016] The thickness ratio of the elastic layer to the flexible substrate layer is 0.5-0.6:1. As the core layer directly filling leaking gaps, the elastic layer must have sufficient thickness to cover holes and fill irregular gaps. The elastic substrate layer, as the supporting carrier, needs to balance structural stability and overall flexibility in its thickness. When the thickness ratio of the elastic substrate layer to the elastic layer is 0.5-0.6:1, with the elastic substrate layer being smaller than the elastic layer, it provides a stable support framework for the sealing layer, ensuring the installation reliability of the magnetic positioning components and the efficient transmission of the attraction force. At the same time, it avoids weakening the overall structure's flexible deformation capability due to an excessively thick substrate layer, allowing the sealing layer to flexibly adapt to the curvature of the substrate surface. This avoids increased operational burden due to an excessively thick substrate layer, or insufficient support and displacement of the magnetic components due to an excessively thin substrate layer.

[0017] As a preferred technical solution, each magnetic positioning component is in contact with the flexible surface layer. Direct contact between the magnetic positioning components and the flexible surface layer allows the magnetic attraction force to act more directly on the flexible surface layer, enhancing the clamping effect on the flexible surface layer and promoting more complete elastic deformation to fill the irregular gaps of the leakage holes.

[0018] As a preferred technical solution, the mounting holes are distributed in a dot matrix, ring, or partition pattern within the flexible substrate; the central axis of each mounting hole is perpendicular to the surface of the flexible substrate layer. This reduces force transmission loss, ensures that the magnetic positioning component's attraction force acts efficiently on the sealing interface, improves the sealing stability of the sealing patch in high-pressure leakage scenarios, and extends the effective sealing time.

[0019] As a preferred technical solution, the mounting hole is a through hole with its central axis perpendicular to the bottom surface of the flexible substrate layer or a blind hole with its opening facing downwards; the magnetic positioning component is a columnar rare earth permanent magnet.

[0020] As a preferred technical solution, the magnetic positioning component is a neodymium magnet.

[0021] As a preferred technical solution, the cross-section of the mounting hole perpendicular to its central axis is circular, and the radial outer peripheral surfaces of two adjacent mounting holes are tangent. By setting the radial outer peripheral surfaces of adjacent mounting holes to be tangent, a reasonable distance is maintained between the magnetic positioning components to avoid mutual interference of magnetic fields. This optimizes the layout of the magnetic components within the limited space of the elastic substrate layer, making the attraction force distribution of each magnetic positioning component more uniform and improving the tightness of the sealant's adhesion to the surface of the ferrous container. The tangent layout does not excessively occupy the internal space of the substrate layer, ensuring that the structural strength and elastic deformation capacity of the elastic substrate layer are not affected, thus guaranteeing the reliability of the sealing effect.

[0022] As a preferred technical solution, buffer holes are provided between adjacent groups of four longitudinal mounting holes on the side of the elastic layer near the flexible surface layer. Each buffer hole is a blind hole with its opening facing downwards. By providing buffer holes with their central axis perpendicular to the surface of the elastic layer between adjacent groups of four longitudinal mounting holes on the side of the elastic layer near the flexible surface layer, additional deformation buffer space can be provided for the elastic layer. This allows the elastic layer to adapt and deform synchronously with the flexible surface layer under the attraction pressure of the magnetic positioning component, improving the filling and sealing performance of irregular gaps and holes prone to leakage. The buffer holes can reduce the overall weight of the product while ensuring the structural stability of the sealing layer; the buffer holes also enhance the elastic recovery capability of the elastic layer.

[0023] As a preferred technical solution, the magnetic positioning components are mainly disposed in the edge area or non-sealed core area of ​​the flexible substrate layer. This solution avoids rigid interference from the magnetic positioning components in the sealed core area, preserving the complete elastic deformation space of the elastic layer and flexible surface layer, ensuring it can fully fill the irregular gaps at the damage site. The magnetic positioning components in the edge area can form a uniform circumferential attraction force, causing the edge of the sealing patch to tightly adhere to the iron surface, effectively preventing leakage from seeping out from the edge gaps, constructing a dual-protection structure of "central elastic sealing + edge magnetic fixation". The magnetic layout in the non-sealed core area does not occupy the core sealing space, ensuring the flexibility of the elastic structure and facilitating quick positioning and installation by operators through the edge magnetic area.

[0024] As a preferred technical solution, the flexible substrate layer has a transverse length greater than its longitudinal width. The flexible substrate layer has several longitudinal mounting hole groups transversely, each group comprising several equally spaced longitudinal mounting holes. A longitudinal groove is provided between adjacent longitudinal mounting hole groups on the side of the flexible substrate layer near the flexible surface layer. By designing the elastic layer with a transverse length greater than its longitudinal width, it can accommodate longer linear leakage areas. The transversely arranged groups of longitudinal mounting holes and the equally spaced longitudinal mounting holes within each group ensure that the attraction force of the magnetic positioning component is uniformly distributed transversely. The longitudinal groove between adjacent longitudinal mounting hole groups enhances the flexible deformation capability of the elastic layer in the longitudinal direction, making it easier to conform to iron containers with complex curvatures or irregular surfaces. The longitudinal groove effectively releases the internal stress generated during the deformation of the sealing layer, reducing material fatigue damage. The longitudinal groove reduces the overall weight of the product while ensuring the structural stability of the sealing layer. The longitudinal groove also enhances the elastic recovery capability of the elastic layer, reducing permanent deformation after long-term pressure.

[0025] As a preferred technical solution, the columnar rare-earth permanent magnet is bonded to the mounting hole. Using an adhesive method to connect the columnar rare-earth permanent magnet to the mounting hole ensures the stability of the magnetic positioning component within the mounting hole, effectively preventing displacement, detachment, or shaking during use. This ensures uniform and continuous transmission of magnetic attraction force, maintaining the sealing interface's compression effect and sealing reliability. Using an elastic adhesive allows the connection to adapt synchronously to the bending deformation of the elastic substrate layer, avoiding connection failure caused by internal stress resulting from substrate deformation.

[0026] As a preferred technical solution, the radial outer circumference of the columnar rare-earth permanent magnet is fitted within an iron sleeve, and each iron sleeve is bonded to the mounting hole. Fitting the columnar rare-earth permanent magnet with an iron sleeve utilizes the high magnetic permeability of iron to effectively concentrate the magnetic field of the permanent magnet, enhancing its attraction to the iron container and improving the fixing strength of the sealing patch and the compression effect of the sealing interface. The iron sleeve provides physical protection for the permanent magnet, isolating it from corrosive media in the leaking liquid and direct erosion from external friction. As an intermediate connecting layer, the iron sleeve increases the contact area with the inner wall of the mounting hole, making the adhesion more uniform and firm, and preventing localized stress concentration or detachment of the permanent magnet caused by direct bonding. The iron sleeve has a certain degree of ductility, allowing it to adapt synchronously to the bending deformation of the elastic substrate layer.

[0027] As a preferred technical solution, the flexible substrate layer is made of one or more of polyurethane, butyl rubber, neoprene rubber, or EPDM rubber. By using one or more of these materials to create the elastic layer, the advantages of each material can be fully utilized: polyurethane has excellent elastic recovery, abrasion resistance, and oil and solvent resistance, effectively resisting leakage and maintaining a long-term sealed shape; butyl rubber possesses excellent airtightness and chemical stability, effectively blocking gas and low-permeability liquid leaks, suitable for gas pipelines, pressure vessels, and other applications; neoprene rubber has excellent weather resistance, ozone resistance, and chemical corrosion resistance, adapting to harsh environments such as outdoor exposure and acid / alkali media; EPDM rubber has good high and low temperature resistance and anti-aging properties, maintaining a stable sealing effect within extreme temperature ranges. When multiple materials are used in combination, the advantages of each material can be integrated, giving the elastic layer high elasticity, high airtightness, weather resistance, and corrosion resistance simultaneously.

[0028] As a preferred technical solution, the flexible substrate layer has a Shore hardness of 60–80 and a tear strength ≥ 40 kN / m. Setting the Shore hardness of the elastic layer to 60–80 is a choice that balances elastic deformation capability and structural support: when the hardness is below 60, the sealing layer is prone to excessive deformation due to leakage pressure, making it difficult to maintain a stable sealing shape and resulting in insufficient wear resistance; when the hardness is above 80, its elastic recovery performance decreases, failing to adequately adapt to irregular gaps on the substrate surface, affecting the tightness of the seal. A tear strength ≥ 40 kN / m ensures that the sealing layer is not easily torn or damaged during installation under tension and bonding operations, as well as during use under leakage impact and vibration conditions, significantly improving its structural durability and damage resistance.

[0029] As a preferred technical solution, the elastic layer is made of one or more of polyurethane, butyl rubber, neoprene rubber, or EPDM rubber. By using one or more of these materials to create the elastic matrix layer, the advantages of each material can be fully utilized: polyurethane has excellent elastic recovery and structural support, providing a stable framework for the overall structure and resisting permanent deformation caused by long-term strain; butyl rubber possesses excellent chemical stability and low permeability, effectively preventing leakage from penetrating into the matrix and protecting the magnetic positioning components from corrosion; neoprene rubber has excellent weather resistance and ozone resistance, adapting to harsh environments such as outdoor exposure and acid / alkali media, extending the overall service life of the product; and EPDM rubber has good high and low temperature resistance and anti-aging capabilities, maintaining structural stability within extreme temperature ranges. When multiple materials are used in combination, their advantages can be integrated, giving the elastic matrix layer high support, elastic recovery, weather resistance, and corrosion resistance simultaneously.

[0030] As a preferred technical solution, the Shore hardness of the elastic layer is 5%-15% greater than that of the flexible substrate layer, and the tear strength of the elastic layer is 20%-30% greater. The core function of the elastic layer is to fill irregular gaps in leaking holes through elastic deformation, requiring flexible deformation capabilities. The elastic substrate layer, as a supporting carrier, needs to support the magnetic positioning components and transmit the attraction force, requiring stronger structural stability and resistance to deformation. The 5%-15% greater Shore hardness of the elastic layer compared to the flexible substrate layer ensures that the sealing layer has sufficient deformation space to adapt to the gaps, providing a stable support framework and preventing displacement of the magnetic components or increased loss of attraction force transmission due to an overly soft substrate layer. It also prevents an overly hard substrate layer from affecting the overall structure's adhesion to complex curvature substrates. This difference in hardness allows for the complementary functions of both layers, improving the sealing reliability and structural durability of the leak-sealing patch.

[0031] The elastic substrate layer, serving as the mounting carrier for the magnetic positioning components and the supporting frame of the overall structure, must withstand tensile stress under magnetic attraction, dynamic loads from leakage impact, and tensile forces during installation. The tear strength of the elastic layer is 20%-30% greater than that of the flexible substrate layer, ensuring it is less prone to tensile fracture or excessive elongation under these conditions. The core function of the elastic layer is to fill leakage gaps through elastic deformation; its tensile strength requirement is relatively low. If the tensile strength of the substrate layer is greater than that of the sealing layer, a functional layering of "rigid support + flexible sealing" can be formed. This ensures the structural load-bearing capacity of the substrate layer without affecting the deformation adaptability of the sealing layer, avoiding limitations on gap filling effect due to excessive tensile strength of the sealing layer or overall structural failure due to insufficient tensile strength of the substrate layer. This difference in tensile strength optimizes the structural stability of the leak-sealing patch.

[0032] As a preferred technical solution, the elastic layer incorporates elastic fiber fabric. Incorporating elastic fiber fabric within the elastic matrix layer significantly enhances the tensile strength and tear resistance of the matrix layer, effectively resisting tensile stress under magnetic attraction, dynamic loads generated by leakage impact, and tensile forces during installation. This prevents excessive elongation or breakage of the matrix layer, improving the overall structural load-bearing stability. The network structure of the elastic fiber fabric evenly distributes localized stress, reducing material fatigue damage and extending the service life of the matrix layer. The elastic fiber fabric exhibits good compatibility with the matrix layer material, strengthening interfacial bonding and preventing separation between the fabric and the matrix layer. Furthermore, the elastic properties of the elastic fiber fabric synergistically work with the matrix layer material to maintain the overall structure's flexible deformation capability while ensuring structural support.

[0033] As a preferred technical solution, at least one set of two adjacent corners of the magnetically assisted elastic sealing repair patch are each fixed with a screw penetrating the patch. An iron ring is fixed to the upper end of each screw at at least one set of two adjacent corners of the magnetically assisted elastic sealing repair patch, and a lifting rope is connected to each of the at least one set of two adjacent iron rings. Providing lifting ropes with iron rings at the four corners of the magnetically assisted elastic sealing repair patch facilitates quick peeling of the patch during disassembly and allows for reuse.

[0034] As a preferred technical solution, the flexible substrate layer is composited with the elastic layer, and the flexible substrate layer is composited with the flexible surface layer, so that the elastic layer, the flexible substrate layer and the flexible surface layer form an integrated structure.

[0035] As a preferred technical solution, the composite is completed by casting or bonding.

[0036] As a preferred technical solution, the ferromagnetic surface to be repaired is the surface of the damaged part of an iron container or iron pipe. When the flexible surface layer of the sealing patch approaches the ferromagnetic surface to be repaired, the flexible surface layer presses against the surface of the damaged part of the surface to be repaired under the action of the elastic layer. The flexible surface layer deforms to seal the damaged part of the container, forming a reliable sealing barrier to prevent the leakage from continuing to seep out. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a preferred embodiment of the removable elastic leak-sealing patch of the present invention.

[0038] Figure 2 yes Figure 1 The diagram shown is an exploded view of the removable elastic sealing patch.

[0039] Figure 3 yes Figure 1 A bottom view of the flexible substrate layer of the removable elastic sealant.

[0040] Figure 4 yes Figure 1 A bottom view of the flexible surface layer of the removable elastic sealant.

[0041] Figure 5 This is a schematic diagram of a preferred embodiment of the removable elastic leak-sealing patch of the present invention.

[0042] Figure 6 yes Figure 5 A bottom view of the flexible substrate layer of the removable elastic sealant.

[0043] Figure 7 yes Figure 6 A magnified view of part A.

[0044] Figure 8 yes Figure 6 A bottom view of the flexible surface layer of the removable elastic sealant.

[0045] Figure 9 This is a top view of a flexible substrate layer.

[0046] Figure 10 yes Figure 9 The bottom view of the flexible substrate layer shown.

[0047] Figure 11 yes Figure 10 A magnified view of part B.

[0048] Figure 12 This is a top view of a flexible substrate layer.

[0049] Figure 13 yes Figure 12 The bottom view of the flexible substrate layer shown.

[0050] Figure 14 yes Figure 13 A magnified view of part C.

[0051] Figure 15 This is a bottom view of a flexible substrate layer.

[0052] Figure 16 yes Figure 15 A magnified view of part D.

[0053] Among them: elastic layer-1; flexible substrate layer-2; flexible surface layer-3; mounting hole-4; magnetic positioning component-5; micro-convex texture-6; iron sleeve-7; buffer hole-8; longitudinal groove-9; lifting rope-10; iron ring-11. Specific Implementation

[0054] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0055] Example 1. As... Figure 1-4 As shown, a removable elastic sealing patch comprises, from top to bottom, an elastic layer 1, a flexible substrate layer 2, and a flexible surface layer 3, sequentially laminated together. The flexible substrate layer 2 is laminated with the elastic layer 1, and the flexible substrate layer 2 is laminated with the flexible surface layer 3, forming an integral structure of the elastic layer 1, the flexible substrate layer 2, and the flexible surface layer 3.

[0056] A number of mounting holes 4 are vertically arranged on the flexible substrate layer, and a magnetic positioning component 5 is installed on each mounting hole, so that the magnetic positioning components are distributed in the flexible substrate layer in a spaced manner, and the magnetic positioning components 5 do not directly contact each other.

[0057] Specifically, such as Figure 1-4 As shown, the removable elastic leak-sealing patch for iron containers has an overall size of 200×400mm and rounded edges with R5.

[0058] Elastic layer 1 is made of ethylene propylene diene monomer (EPDM) rubber with a Shore hardness of 63A, a thickness of 2.5mm, and a tear strength of 48kN / m.

[0059] The flexible substrate layer 2 is made of polyurethane elastomer (PU) with a Shore hardness of 60A and a tear strength of 40 kN / m; it is 5mm thick and is composited with the elastic layer 1 by a casting process. The curing temperature is 100℃ and the curing time is 1.5 hours.

[0060] The magnetic positioning component is a neodymium magnet. Specifically, the magnetic positioning component 5 uses a cylindrical neodymium iron boron permanent magnet with a radius of 8mm and a height of 5mm, with a zinc-plated surface and a magnetic field strength of 1300 Gauss. 180 mounting holes 4, with their central axes perpendicular to the bottom surface of the flexible substrate, are distributed in a lattice pattern on the flexible substrate layer. There are 9 rows of 20 mounting holes each, arranged in a longitudinal and transverse array. The cross-section of each mounting hole perpendicular to its central axis is circular, and the radial outer circumferential surfaces of adjacent mounting holes are tangent. The inner walls of the mounting holes have anti-slip textures, and the magnetic positioning component 5 is fixed to the mounting holes using polyurethane adhesive.

[0061] like Figure 4 As shown, the flexible surface layer 3 is made of 0.5mm thick silicone material, with a micro-embossed texture 6 (0.2mm depth, 0.8mm spacing) pressed onto the surface, and a 0.08mm thick polytetrafluoroethylene anti-corrosion coating is sprayed on. The micro-embossed texture is a wavy pattern. The flexible surface layer 3 is connected to the flexible substrate layer 2 by an adhesive. The adhesive is a two-component polyurethane structural adhesive with a tensile shear strength ≥2.5MPa and a curing time of 24 hours (ambient temperature 25℃). This adhesive has excellent compatibility with both the silicone flexible surface layer and the polyurethane flexible substrate layer, forming a strong and flexible bonding layer at the interface. This effectively resists the risk of interface delamination caused by leakage impact, pipeline vibration, and temperature changes, without affecting the overall structure's flexible deformation capability, ensuring the stable connection between the surface layer and the substrate layer during long-term use of the sealing patch.

[0062] like Figure 1 As shown, each of the four corners of the magnetically assisted elastic sealing repair patch is fixed with a screw 12 that penetrates the patch. An iron ring 11 is fixed to the upper end of each screw 12. A lifting rope 10 is connected to each of the two iron rings at the two front corners of the magnetically assisted elastic sealing repair patch. The lifting rope is made of nylon rope with a diameter of 1.0 mm. Specifically, each of the four corners of the magnetically assisted elastic sealing repair patch has a screw hole that penetrates the patch. A screw 12 is fixed to each screw hole, with the small end of the screw 12 facing upwards. An iron ring 11 is welded to the small end of the screw.

[0063] The elastic layer 1, flexible substrate layer 2, and flexible surface layer 3 all have the same rectangular shape projected onto the horizontal plane, and their outline dimensions are identical. This ensures that the edges of each layer are aligned after lamination, preventing localized sealing defects or stress concentration due to dimensional deviations. The upper surface of the elastic layer 1 is a smooth plane, facilitating pressure application by the operator to ensure that the flexible surface layer 3 adheres tightly to the damaged area.

[0064] When the flexible surface layer of the sealing patch approaches the ferromagnetic surface to be repaired, the flexible surface layer, under the action of the elastic layer, presses against the damaged area of ​​the ferromagnetic surface to be repaired. The flexible surface layer 3 deforms to seal the damaged area of ​​the container, forming a reliable sealing barrier to prevent further leakage. The deformation of the flexible surface layer 3 mainly relies on the pressure generated by the deformation of the elastic layer 1. The magnetic positioning component near the damaged area of ​​the sealed container mainly plays a role in accurate positioning and does not constitute the main source of sealing pressure. The pressure of the elastic layer 1 comes from the magnetic force of the entire detachable elastic sealing patch and the pressure generated by the elastic deformation of the elastic layer 1. The magnetic positioning component enables the sealing patch to be quickly pre-positioned and fixed to the base, and then relies on the uniform rebound force generated by the compression deformation of the elastic layer to achieve sealing and tightening. The magnetic positioning component only provides auxiliary attraction force to pull the whole to be repaired tightly, and will not cause the elastic layer to lose its deformation adaptability due to excessive local magnetic force, thus avoiding the problem of insufficient local sealing pressure caused by uneven magnetic force distribution. This force distribution design significantly reduces the difficulty of on-site operation for pressurized leak sealing, eliminating the need for additional binding, welding, or other fixing procedures. It also ensures uniform pressure at the sealing interface, improving sealing reliability, and meets the design requirements for detachability. It will not cause additional damage to the repaired iron container or pipe, facilitating thorough subsequent repair of the damaged area and enabling the leak-sealing patch to be reused. The elastic layer 1, flexible substrate layer 2, and flexible surface layer 3 are made of different materials and have different thicknesses. Each layer's material is specifically selected according to its functional requirements, working together to optimize overall sealing performance.

[0065] Example 2. (As shown) Figure 5-8 As shown, the difference between this embodiment and Embodiment 1 is that the radial outer circumferential surface of the columnar rare earth permanent magnet is fitted inside an iron sleeve 7, and each iron sleeve 7 is bonded to the mounting hole 4. The flexible surface layer has several annular protrusions 61 away from the flexible substrate layer. Each magnetic positioning component is in contact with the flexible surface layer. The elastic layer 1 is made of neoprene rubber with a Shore hardness of 69A and a tear strength of 52 kN / m. The flexible substrate layer 2 is made of polyurethane elastomer (PU) with a Shore hardness of 60A and a tear strength of 40 kN / m. The elastic layer 1 has a thickness of 2.5 mm, the flexible substrate layer 2 has a thickness of 5 mm, and the flexible surface layer has a thickness of 0.5 mm. The ferromagnetic repair surface is the surface of the damaged part of the iron pipe. When the flexible surface layer of the sealing patch approaches the ferromagnetic repair surface, the flexible surface layer adheres to the surface of the damaged part of the iron pipe under the action of the elastic layer. The flexible surface layer deforms to adapt to the damaged part of the container, forming a reliable sealing barrier to prevent further leakage.

[0066] Example 3. (As shown) Figure 9-11As shown, the difference between this embodiment and Embodiment 1 is that buffer holes 8 are provided between the four adjacent longitudinal mounting hole groups near the side of the elastic layer close to the flexible surface layer. Each buffer hole 8 is a blind hole with its opening facing downwards. The flexible substrate layer 2 is made of polyurethane elastomer (PU) with a Shore hardness of 50A, and the elastic layer 1 is an elastic layer made of polyurethane. The elastic layer 1 is made of polyurethane elastomer (PU) with a Shore hardness of 69A and a tear strength of 48 kN / m. The flexible substrate layer 2 is made of polyurethane elastomer (PU) with a Shore hardness of 50A and a tear strength of 40 kN / m. The thickness of the elastic layer 1 is 8 mm, the thickness of the flexible substrate layer 2 is 4.8 mm, and the thickness of the flexible surface layer is 1 mm. During operation, a flexible substrate layer with several downward-facing mounting holes is poured into the first mold. The flexible substrate layer is then placed into the second mold with the mounting holes facing downwards. An elastic layer is poured onto the top surface of the flexible substrate layer, covering the top surface of the elastic layer to form an elastic layer. After curing, the flexible substrate layer and the elastic layer are bonded together. The magnetic positioning component is installed in the mounting holes. The flexible surface layer is then pasted onto the underside of the flexible substrate layer to complete the assembly of the overall structure.

[0067] Example 4. (As shown) Figure 12-14 As shown, the difference between this embodiment and Embodiment 1 is that the overall size of the sealing patch is 220×450mm. 180 mounting holes 4, with their central axes perpendicular to the bottom surface of the flexible substrate layer, are distributed in a dot matrix pattern on the flexible substrate layer. There are 9 rows of mounting holes 4, with 20 holes in each row, and the spacing between adjacent mounting holes is 20mm. A longitudinal groove 9 is provided between adjacent groups of longitudinal mounting holes on the side of the flexible substrate layer near the flexible surface layer. The elastic layer 1 is made of butyl rubber with a Shore hardness of 84A and a tear strength of 52kN / m. The flexible substrate layer 2 is made of polyurethane elastomer (PU) with a Shore hardness of 80A and a tear strength of 40kN / m. The thickness of the elastic layer 1 is 3.6mm, the thickness of the flexible substrate layer 2 is 6mm, and the thickness of the flexible surface layer is 1mm. The elastic layer provides the primary sealing pressure, while the magnetic positioning component only plays an auxiliary positioning role and does not constitute the main source of sealing pressure, thus avoiding seal failure caused by uneven magnetic force distribution or magnetic attenuation. The flexible surface layer deforms under the action of the elastic layer, which can closely conform to damaged surfaces with different radii of curvature to form an adaptive sealing barrier. The magnetic positioning component is detachably installed in the mounting holes of the flexible substrate layer, which facilitates the replacement or adjustment of the magnetic force configuration. The overall structure is lightweight and thin, easy to operate, and suitable for rapid leak sealing and repair of iron containers or pipelines in oil and gas, chemical, and storage and transportation facilities.

[0068] Example 5. (As shown) Figure 15-16As shown, the difference between this embodiment and embodiment 4 is that the mounting hole 4 has a square cross-section with sides of 15*15*5mm, which matches the shape of the original positioning hole of the magnetic positioning component. The elastic layer 1 is made of polyurethane with a Shore hardness of 92A and a tear strength of 62kN / m. The flexible substrate layer 2 is made of polyurethane with a Shore hardness of 80A and a tear strength of 50kN / m. The elastic layer 1 has a thickness of 3.5mm, the flexible substrate layer 2 has a thickness of 7mm, and the flexible surface layer has a thickness of 0.8mm.

[0069] Example 6. This example differs from Example 1 in that the overall size of the sealing patch is 400×400mm, and it is distributed in sections within the flexible substrate layer. Specifically, the magnetic positioning components are arranged in layers on the flexible substrate layer, with each layer's magnetic positioning components arranged in a ring array along the center of the flexible substrate layer, and the interlayer distance is greater than 10mm. Elastic layer 1 is butyl rubber with a thickness of 3.5mm, flexible substrate layer 2 is neoprene rubber with a thickness of 7mm, and the flexible surface layer is soft rubber with a thickness of 0.8mm. The flexible substrate layer 2 is bonded to the elastic layer 1, and the flexible substrate layer 2 is bonded to the flexible surface layer 3, forming an integrated structure.

[0070] Example 7. This example differs from Example 6 in that the magnetic positioning components are mainly disposed in the non-sealed core area of ​​the flexible substrate layer. Specifically, the higher the density of the magnetic positioning components in the center of the flexible substrate layer, the better. Elastic layer 1 is EPDM rubber with a thickness of 4.8 mm, flexible substrate layer 2 is butyl rubber with a thickness of 8 mm, and flexible surface layer 3 is soft rubber with a thickness of 0.8 mm.

[0071] Example 8. A leak-sealing patch for high-pressure chemical storage tanks, differing from Example 1 in that: this leak-sealing patch uses a 300×300mm specification, the elastic layer thickness is increased to 4.8mm, and 10% glass fiber reinforcement is added to the silicone rubber material with a Shore hardness of 70A, bonded together with an 8mm thick butyl rubber flexible matrix layer (Shore hardness 65A). The elastic layer thickness in the sealing core area (80mm diameter range) is increased by 1mm, forming a gradient sealing structure. The magnetic positioning component uses a 10mm diameter, 6mm high neodymium iron boron permanent magnet with 94 mounting holes in the flexible matrix layer. The mounting holes are blind holes with downward openings, and iron sleeves are built into the mounting holes, interfering with the magnetic component. Adjacent holes are arranged tangentially around their outer peripheries. The magnetic field strength is 2000 Gauss. The flexible surface layer uses a polyurethane elastomer and aramid fiber composite structure with a thickness of 1mm and a wavy texture with a depth of 0.3mm. The flexible surface layer has an anti-corrosion coating, which is a fluorocarbon coating with a thickness of 0.1mm. The lifting rope is made of 1.5mm high-strength nylon rope, and the iron ring is 0.5mm thick.

[0072] Example 9. A quick-installation leak-sealing patch, differing from Example 3 in that it adopts a lightweight 150×150mm design, with a 2.5mm thick elastic layer (Shore A 50A silicone rubber) and a 4mm thick flexible substrate layer (Shore A 40A polyurethane). The magnetic positioning component uses 5mm diameter × 3mm height neodymium iron boron magnets, distributed in a 7×7 dot matrix, using a total of 49 neodymium iron boron magnets. The mounting holes are blind holes, with the magnets bonded to the iron sleeves, and a hole depth of 3.2mm. The magnetic field strength reaches 1000 Gauss. This dot matrix distribution ensures that the magnetic attraction force evenly covers the entire patch area, ensuring consistent pressure between the elastic layer and the leak surface, effectively eliminating the risk of seal failure caused by uneven local pressure. The lifting rope uses a 0.8mm diameter high-strength polyester braided rope, paired with 2mm diameter iron rings, and is placed at the four corners of the patch. A single person can quickly complete the positioning and tightening operation, significantly shortening the installation time, especially suitable for emergency repairs and other scenarios with high time requirements. The flexible surface layer is made of 0.5mm thick polyurethane elastomer with 0.15mm deep annular protrusions pressed onto the surface to improve adhesion to the leak point surface. It also possesses good oil resistance, facilitating subsequent cleaning and reuse. During preparation, the elastic layer is extruded and then surface-treated to remove burrs. When casting and bonding it with the base layer, the mold cavity is 2mm larger than the sealing layer to ensure complete coverage.

[0073] Example 10. Flame-retardant and explosion-proof leak-sealing patch, differing from Example 1 in that it is suitable for explosion-proof areas in petrochemical industries, uses a 200×200mm specification, and features an elastic layer with 15% nano-aluminum hydroxide flame retardant (oxygen index ≥32), made of 3mm thick neoprene rubber with a Shore hardness of 70A, and an internal 10% carbon fiber mesh reinforcement layer. The flexible substrate layer is 5mm thick butyl rubber with a Shore hardness of 65A, with mounting holes of 10mm diameter and 5mm height distributed at 10mm intervals. Neodymium iron boron magnets are installed in the mounting holes, arranged tangentially around the outer periphery of adjacent holes, with a magnetic field strength of 1800 Gauss. The flexible surface layer is made of 0.8mm thick flame-retardant silicone material, with a 0.2mm deep diamond-shaped anti-slip texture pressed onto the surface, and a 0.12mm thick flame-retardant and anti-corrosion coating sprayed on, with an oxygen index ≥30. The lifting rope is made of flame-retardant aramid rope with a diameter of 1.2mm, and is paired with stainless steel rings with a diameter of 3mm. These rings are placed at the four corners of the patch, and the surface of the rings is passivated to improve corrosion resistance.

Claims

1. A removable elastic leak-sealing patch, characterized in that, From top to bottom, it includes an elastic layer (1), a flexible matrix layer (2), and a flexible surface layer (3) that are sequentially combined. A number of mounting holes (4) are provided vertically on the flexible substrate layer (2), and a magnetic positioning component (5) is installed on each mounting hole (4), so that the magnetic positioning components (5) are distributed in the flexible substrate layer (2) in a spaced manner and the magnetic positioning components (5) do not directly contact each other. When the flexible surface layer (3) of the sealing patch approaches the ferromagnetic surface to be repaired, the flexible surface layer (3) presses the surface to be repaired under the action of the elastic layer (1) to form a reliable sealing barrier, and the magnetic positioning component (5) does not constitute the main source of sealing pressure.

2. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible surface layer (3) is made of one or more of the following: silicone, polyurethane elastomer, thermoplastic elastomer, soft rubber, elastic fiber fabric or Teflon.

3. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible surface layer (3) is away from the flexible substrate layer (2) and has micro-texture (6) or annular protrusions (61).

4. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible surface layer (3) has an anti-corrosion coating.

5. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The thickness of the flexible surface layer (3) is 0.5-1mm; the thickness of the flexible substrate layer (2) is 5-8mm; the thickness ratio of the elastic layer (1) to the flexible substrate layer (2) is 0.5-0.6:

1.

6. The removable elastic leak-sealing patch as described in claim 1, characterized in that: Each magnetic positioning component (5) is in contact with the flexible surface layer (3).

7. The removable elastic leak-sealing patch as described in claim 1, characterized in that: Each mounting hole (4) is distributed in the flexible substrate in a dot matrix, ring or partition pattern; the central axis of each mounting hole (4) is perpendicular to the surface of the flexible substrate layer (2).

8. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The mounting hole (4) is a through hole or a blind hole with its central axis perpendicular to the bottom surface of the flexible substrate layer (2); the magnetic positioning component (5) is a columnar rare earth permanent magnet.

9. The removable elastic leak-sealing patch as described in claim 8, characterized in that: The magnetic positioning component (5) is a neodymium magnet.

10. The removable elastic leak-sealing patch as described in claim 8, characterized in that: The cross section of the mounting hole (4) perpendicular to its central axis is a circle, and the radial outer circumferential surfaces of two adjacent mounting holes (4) are tangent.

11. The removable elastic leak-sealing patch as described in claim 10, characterized in that: A buffer hole (8) is provided between the four longitudinal mounting holes (4) adjacent to the side of the elastic layer (1) near the flexible surface layer (3). Each buffer hole (8) is a blind hole with its opening facing downward.

12. The removable elastic leak-sealing patch as described in claim 8, characterized in that: The magnetic positioning component (5) is mainly located in the edge area or non-sealed core area of ​​the flexible substrate layer (2).

13. The removable elastic leak-sealing patch as described in claim 8, characterized in that: The transverse length of the flexible substrate layer (2) is greater than its longitudinal width. There are several sets of longitudinal mounting holes (4) on the transverse side of the flexible substrate layer (2). Each set of longitudinal mounting holes (4) includes several longitudinal mounting holes (4) arranged at equal intervals. A longitudinal groove (9) is provided between two adjacent sets of longitudinal mounting holes (4) on the side of the flexible substrate layer (2) near the flexible surface layer (3).

14. The removable elastic leak-sealing patch as described in claim 8, characterized in that: The columnar rare earth permanent magnet is bonded to the mounting hole (4), or the radial outer circumferential surface of the columnar rare earth permanent magnet is fitted into an iron sleeve (7), and each iron sleeve (7) is bonded to the mounting hole (4).

15. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible substrate layer (2) is made of one or more of polyurethane, butyl rubber, chloroprene rubber or EPDM rubber.

16. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible substrate layer (2) has a Shore hardness of 60–80 and a tear strength ≥ 40 kN / m.

17. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The elastic layer (1) is made of one or more of polyurethane, butyl rubber, chloroprene rubber or EPDM rubber.

18. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The Shore hardness of the elastic layer (1) is 5%-15% greater than that of the flexible matrix layer (2), and the tear strength of the elastic layer (1) is 20%-30% greater than that of the flexible matrix layer (2).

19. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The elastic layer (1) contains elastic fiber fabric.

20. The removable elastic leak-sealing patch as described in claim 1, characterized in that: At least one set of two adjacent corners of the magnetically assisted elastic sealing repair patch are each fixed with a screw (12) that penetrates the magnetically assisted elastic sealing repair patch. At the upper end of each screw (12) at at least one set of two adjacent corners of the magnetically assisted elastic sealing repair patch, an iron ring (11) is fixed. At least one set of two adjacent iron rings are each connected with a lifting rope (10).

21. The removable elastic leak-sealing patch as described in claim 1, characterized in that: The flexible substrate layer (2) is combined with the elastic layer (1), and the flexible substrate layer (2) is combined with the flexible surface layer (3), so that the elastic layer (1), the flexible substrate layer (2) and the flexible surface layer (3) form an integral structure; the composite is completed by casting or bonding.

Images