Curing device and hydrogen storage well repairing method and equipment

Abstract

The invention relates to the technical field of hydrogen storage well repairing, and discloses a curing device and a hydrogen storage well repairing method and equipment. According to the hydrogen storage well repairing method and equipment, a repairing pipe is placed in a hydrogen storage well, the outer wall face of the repairing pipe is attached to the inner wall face of the hydrogen storage well through external force by means of the elastic deformation performance of the repairing pipe, at the moment, the repairing pipe blocks a leakage point from the interior of the hydrogen storage well, then an ultraviolet lamp is used for curing the repairing pipe, and the repairing pipe is fixed to the leakage point. The hydrogen storage well is repaired through a curing device, the periphery of an expansion band is sleeved with a repairing pipe, the curing device and the repairing pipe are placed into the hydrogen storage well together, the outer wall of the repairing pipe is right opposite to a leakage point, the expansion band is expanded through gas filled into an inner cavity, the outer wall face of the repairing pipe is driven to be attached to the inner wall face of the hydrogen storage well, and an ultraviolet lamp is turned on. And the repair pipe is cured by ultraviolet light emitted by the ultraviolet lamp, so that the repair pipe is fixed at the leakage point. By means of the repairing mode, the leakage point of the hydrogen storage well can be effectively plugged.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage well repair technology, specifically to a solidification device, a method and equipment for repairing hydrogen storage wells. Background Technology

[0002] Hydrogen energy encompasses production, storage, transportation, and utilization, with storage and transportation costs accounting for the highest proportion and currently a crucial factor restricting its development. Hydrogen storage well technology has become a powerful means to address these costs. A hydrogen storage well is an underground hydrogen storage container consisting of a specialized wellhead, casing, and bottom connected by a gas-tight threaded connection. It features a small footprint and low safety risks.

[0003] A hydrogen storage well is formed by connecting multiple coaxial steel pipes with threads. During use, leaks may occur at the threaded connection between two steel pipes, which requires timely repair of the hydrogen storage well and sealing of the leak.

[0004] Therefore, a method and / or equipment for repairing hydrogen storage wells is needed. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem of repairing leaks in hydrogen storage wells in the prior art, and to provide a solidification device, a method and equipment for repairing hydrogen storage wells. The method for repairing hydrogen storage wells can repair leaks in hydrogen storage wells.

[0006] To achieve the above objectives, the first aspect of the present invention provides a method for repairing hydrogen storage wells, comprising the following steps:

[0007] S1. Place the elastic and UV-curable repair tube into the hydrogen storage well, so that the outer wall of the repair tube corresponds to the leak point of the hydrogen storage well.

[0008] S2. Use tensioning components to stretch the repair pipe until its outer wall surface is flush with the inner wall surface of the hydrogen storage well; and

[0009] S3. Use an ultraviolet lamp to irradiate the repair tube inside the lumen, so that the repair tube can be cured and adhered to the inner wall of the hydrogen storage well.

[0010] Preferably, in step S2, the tensioning component expands the repair tube by inflating it within the tube cavity.

[0011] Preferably, the supporting component is an inflatable airbag with a ring structure that can transmit ultraviolet light.

[0012] Preferably, the method further includes, before step S1: fitting the repair tube around the outer periphery of the expansion bladder, so that the two form an integral structure that can be placed together into the hydrogen storage well; step S2 includes: inflating the expansion bladder, causing the expansion bladder to push the outer wall of the repair tube against the inner wall of the hydrogen storage well; step S3 includes: irradiating the inside of the expansion bladder with an ultraviolet lamp, so that the ultraviolet light passes through the expansion bladder and irradiates the repair tube; and / or,

[0013] The method further includes, after step S3: extracting the gas from the expansion bladder to cause it to contract and detach from the repair tube; removing the expansion bladder outside the repair tube; and using an ultraviolet lamp to irradiate the repair tube again inside the tube cavity to perform secondary curing of the repair tube.

[0014] Preferably, the inflatable airbag includes an upper shell, a lower shell, and an inflatable band that is transparent to light and elastic. The axial length of the inflatable band is greater than or equal to the axial length of the repair tube. The inflatable band is sealed between the upper shell and the lower shell, so that the three form an inflatable airbag with an inner cavity, so that the gas filled into the inner cavity can inflate the inflatable band. The ultraviolet lamp is fixed inside the inner cavity.

[0015] Preferably, the method further includes, before step S1: placing a positioning component into the hydrogen storage well, such that the top of the positioning component is kept at a predetermined vertical distance from the leak point of the hydrogen storage well, so as to position the repair tube to enter the hydrogen storage well; in step S1, the repair tube is placed into the hydrogen storage well until the repair tube is positioned by the positioning component to the position corresponding to the leak point of the hydrogen storage well.

[0016] Preferably, the positioning component is a predetermined number of support airbags, and the repair tube is positioned to the location corresponding to the leak point of the hydrogen storage well by contacting the positioning component through the lower housing.

[0017] A second aspect of the present invention provides a curing device for hydrogen storage well repair. The curing device includes: an upper shell; a lower shell connected to the upper shell, the upper shell and / or the lower shell having through holes for gas flow; an expansion band sealed between the upper shell and the lower shell, the three forming an inner cavity and constituting an expansion bladder, the expansion band being able to expand outward under the action of gas injected into the inner cavity through the through holes, the outer wall of the expansion band being able to accommodate a repair tube; and an ultraviolet lamp disposed inside the inner cavity.

[0018] Preferably, the solidification device is used in the above-mentioned hydrogen storage well repair method.

[0019] A third aspect of the present invention provides a hydrogen storage well repair device, comprising: a repair tube, the repair tube being elastic and capable of ultraviolet curing; a tensioning member, the tensioning member being capable of stretching the repair tube until its outer wall surface fits against the inner wall surface of the hydrogen storage well; and a curing device, the curing device comprising an ultraviolet lamp that can be located inside the repair tube, so as to cure the repair tube and adhere it to the inner wall surface of the hydrogen storage well.

[0020] Preferably, the curing device is the curing device described above; or, the hydrogen storage well repair equipment is applied to the hydrogen storage well repair method described above.

[0021] Through the above technical solutions, firstly, in the hydrogen storage well repair method and equipment, a repair tube is placed inside the hydrogen storage well. Utilizing the elastic deformation properties of the repair tube, external force is applied to adhere the outer wall of the repair tube to the inner wall of the hydrogen storage well. At this point, the repair tube seals the leak point from inside the hydrogen storage well. Then, an ultraviolet lamp is used to cure the repair tube, fixing it at the leak point and achieving long-term sealing, thus completing the repair of the hydrogen storage well. Secondly, a curing device is used to repair the hydrogen storage well. The repair tube is fitted around the outer circumference of an expansion band. The curing device, along with the repair tube, is placed inside the hydrogen storage well, with the outer wall of the repair tube facing the leak point. Gas is injected into the inner cavity to expand the expansion band, causing the outer wall of the repair tube to adhere to the inner wall of the hydrogen storage well. The ultraviolet lamp is then turned on, curing the repair tube with ultraviolet light, fixing it at the leak point and achieving long-term sealing, thus completing the repair of the hydrogen storage well. The above repair methods can effectively seal leak points in hydrogen storage wells. Attached Figure Description

[0022] Figure 1 This is a top view of the repair pipe in the hydrogen storage well repair method of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the curing device of the present invention in conjunction with the repair pipe and the hydrogen storage well in one step of the hydrogen storage well repair method;

[0024] Figure 3 This is a schematic diagram of the structure of the curing device of the present invention in cooperation with the repair pipe and the hydrogen storage well in another step of the hydrogen storage well repair method;

[0025] Figure 4 This is a schematic diagram of the curing device and air compressor of the present invention;

[0026] Figure 5 It is a longitudinal cross-sectional view of the curing device excluding the air pipes and power transmission lines; and

[0027] Figure 6 This is a schematic diagram of the curing device (excluding the air pipes and power transmission lines) after removing the inflatable airbag and lower shell.

[0028] Explanation of reference numerals in the attached figures

[0029] 10. Repair tube; 11. Inner tube; 12. Outer tube; 21. Ultraviolet lamp; 22. Expansion band; 23. Upper shell; 24. Lower shell; 25. Gas pipe; 26. Power transmission line; 27. Traction pipe; 28. Gas nozzle; 29. ​​Positioning block; 31. Support airbag; 32. Pull ring; 33. Pull rope; 40. Air compressor; 9. Hydrogen storage well. Detailed Implementation

[0030] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower parts of the corresponding figures. "Inner" and "outer" refer to the inner and outer contours of the corresponding parts.

[0031] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0032] It should be noted that steps S1, S2, and S3 do not represent a specific order.

[0033] See Figures 1 to 6 As shown, the present invention provides a method for repairing hydrogen storage wells, comprising the following steps:

[0034] S1. Place the elastic and UV-curable repair tube 10 into the hydrogen storage well 9, so that the outer wall of the repair tube 10 corresponds to the leakage point of the hydrogen storage well 9.

[0035] S2. Use tensioning components to stretch the repair pipe 10 until its outer wall surface is in contact with the inner wall surface of the hydrogen storage well 9; and

[0036] S3. Use ultraviolet lamp 21 to irradiate the repair tube 10 inside the cavity of the repair tube 10, so that the repair tube 10 is cured and attached to the inner wall of the hydrogen storage well 9.

[0037] In this embodiment, when a leak occurs in the hydrogen storage well 9, a repair tube 10 is placed inside the hydrogen storage well 9. Utilizing the elastic deformation properties of the repair tube 10, force is applied to make the outer wall of the repair tube 10 adhere to the inner wall of the hydrogen storage well 9. At this point, the repair tube 10 seals the leak point from the inside of the hydrogen storage well 9. Then, an ultraviolet lamp 21 is used to cure the repair tube 10, fixing it at the leak point and achieving long-term sealing, thus completing the repair of the hydrogen storage well 9. This repair method does not involve well wall support or climbing equipment, avoiding damage to the well wall of the hydrogen storage well 9. Furthermore, it does not require digging open the well casing, preserving the original hydrogen-blocking performance of the hydrogen storage well 9. The operation is convenient, achieving effective repair, improving the service life of the hydrogen storage well 9, and ensuring the safety of using the hydrogen storage well 9.

[0038] Specifically, the axial length of the repair pipe 10 can be less than the depth of the hydrogen storage well 9, forming a ring structure to repair local leakage points in the hydrogen storage well 9. All operations of the repair pipe 10 before it enters the hydrogen storage well 9 are carried out under ultraviolet-shielded conditions to prevent the repair pipe 10 from curing before it is attached to the hydrogen storage well 9.

[0039] See Figures 1 to 6 As shown, in some embodiments, in step S2, the tensioning member expands the repair tube 10 by inflating it within the lumen of the repair tube 10.

[0040] With the above settings, the tensioning component gradually expands under the action of air, causing the repair tube 10 to gradually undergo elastic deformation until the outer wall of the repair tube 10 adheres to the inner wall of the hydrogen storage well 9. This allows the repair tube 10 to be gradually stretched by force, preventing the repair tube 10 from experiencing elastic failure due to stress and ensuring that the outer wall of the repair tube 10 can completely adhere to the inner wall of the hydrogen storage well 9.

[0041] See Figures 1 to 6 As shown, in some embodiments, the support component is an annular structure that is an inflatable airbag capable of transmitting ultraviolet light.

[0042] In this embodiment, the annular structure serves two purposes: firstly, it adapts to the annular structure of the repair tube 10, allowing the repair tube 10 to be fully expanded and the outer wall of the expanded air bladder to conform to the entire inner wall of the repair tube 10; secondly, it provides space for the ultraviolet lamp 21, enabling it to be placed inside the expanded air bladder. Furthermore, with the ultraviolet lamp 21 inside the expanded air bladder, the ultraviolet light emitted by the lamp can pass through the air bladder and act on the repair tube 10, causing it to cure. This prevents the expanded air bladder from blocking the ultraviolet light and affecting the curing of the repair tube 10.

[0043] See Figures 1 to 6 As shown, in some embodiments, the method further includes, before step S1: fitting the repair tube 10 around the outer periphery of the expansion bladder, so that the two form an integral structure that can be placed together into the hydrogen storage well 9; step S2 includes: inflating the expansion bladder, so that the expansion bladder pushes the outer wall of the repair tube 10 to fit against the inner wall of the hydrogen storage well 9; step S3 includes: using an ultraviolet lamp 21 to irradiate the inside of the expansion bladder, so that the ultraviolet light passes through the expansion bladder and irradiates the repair tube 10.

[0044] In this embodiment, the expansion airbag is always located inside the lumen of the repair tube 10. The repair tube 10 and the expansion airbag are placed together in the hydrogen storage well 9. It is only necessary to position the repair tube 10 to the leak point corresponding to the hydrogen storage well 9, without needing to position the expansion airbag again, thus saving time and improving repair efficiency.

[0045] See Figures 1 to 6As shown, in some embodiments, the method further includes, after step S3: extracting the gas from the expansion bladder, causing the expansion bladder to contract and detach from the repair tube 10; removing the expansion bladder outside the repair tube 10; and using an ultraviolet lamp 21 to irradiate the repair tube 10 again inside the lumen of the repair tube 10 to perform secondary curing of the repair tube 10.

[0046] In this embodiment, during the first curing stage of the ultraviolet lamp 21, the emitted ultraviolet rays pass through the expansion bladder and act on the repair tube 10, causing the repair tube 10 to not be completely and firmly fixed inside the hydrogen storage well 9. At this time, the expansion bladder is evacuated to remove it from the repair tube 10, and then the ultraviolet lamp 21 is used to perform a second curing on the repair tube 10. At this time, the ultraviolet lamp 21 is directly located inside the repair tube 10, and the ultraviolet light emitted by it directly irradiates the inner wall of the repair tube 10. Combined with sufficient irradiation time, the repair tube 10 is completely and firmly fixed inside the hydrogen storage well 9, achieving long-term sealing of the leakage point of the hydrogen storage well 9.

[0047] Specifically, before the gas inside the expansion bladder is extracted, the ultraviolet lamp 21 needs to be irradiated for a predetermined time. After the repair tube 10 is completely attached to the inner wall of the hydrogen storage well 9, the gas inside the expansion bladder is then extracted.

[0048] See Figures 1 to 6 As shown, in some embodiments, the inflatable airbag includes an upper shell 23, a lower shell 24, and an elastic inflatable band 22 that is light-transmitting. The axial length of the inflatable band 22 is greater than or equal to the axial length of the repair tube 10. The inflatable band 22 is sealed between the upper shell 23 and the lower shell 24, so that the three form an inflatable airbag with an inner cavity, so that the gas filled into the inner cavity can inflate the inflatable band 22. The ultraviolet lamp 21 is fixed inside the inner cavity.

[0049] In this embodiment, the upper shell 23 and lower shell 24 are more rigid than the expansion band 22, facilitating the insertion of the repair tube 10 along the upper shell 23 or lower shell 24 onto the outer periphery of the expansion band 22. The ultraviolet lamp 21 and the expansion airbag form an integral structure. After the repair tube 10 is placed at the position corresponding to the leak point, the ultraviolet lamp 21 is already inside the repair tube 10. After the expansion airbag is inflated, the ultraviolet lamp 21 is turned on, emitting ultraviolet light to cure the repair tube 10. This saves the positioning time of the ultraviolet lamp 21 and improves repair efficiency.

[0050] See Figures 1 to 6 As shown, in some embodiments, the method further includes, before step S1: placing a positioning component into the hydrogen storage well 9, such that the top of the positioning component is kept at a predetermined vertical distance from the leak point of the hydrogen storage well 9, so as to position the repair tube 10 into the hydrogen storage well 9; in step S1, the repair tube 10 is placed into the hydrogen storage well 9 until the repair tube 10 is positioned by the positioning component to the position corresponding to the leak point of the hydrogen storage well 9.

[0051] With the above settings, the repair tube 10 can be positioned by the positioning component, avoiding the need for the repair tube 10 to search for its position in the hydrogen storage well 9, thus saving the positioning time of the repair tube 10.

[0052] See Figures 1 to 6 As shown, in some embodiments, the positioning component is a predetermined number of support airbags 31, and the repair tube 10 is positioned to the location corresponding to the leak point of the hydrogen storage well 9 by contacting the positioning component through the lower housing 24.

[0053] With the above configuration, on the one hand, the support airbag 31 positions the repair tube 10, which is sleeved on the outer periphery of the expansion band 22, by contacting the lower housing 24. The lower housing 24 is placed above the support airbag 31, providing support for the expansion airbag and ensuring its stability during expansion. This prevents the repair tube 10 from shifting due to external forces on the expansion airbag, ensuring the accuracy of leak repair. On the other hand, the support airbag 31 has a buffering effect, protecting the lower housing 24 from damage caused by collisions with rigid positioning components. Furthermore, the support airbag 31 is made of a flexible, soft material, preventing damage to the inner wall of the hydrogen storage well 9.

[0054] See Figures 1 to 6 As shown, in some embodiments, the present invention also provides a curing device for repairing a hydrogen storage well 9. The curing device includes: an upper shell 23; a lower shell 24 connected to the upper shell 23, with through holes for gas flow on the upper shell 23 and / or the lower shell 24; an expansion band 22 sealed between the upper shell 23 and the lower shell 24, the three forming an inner cavity and forming an expansion airbag, the expansion band 22 being able to expand outward under the action of gas injected into the inner cavity through the through holes, the outer wall of the expansion band 22 being able to accommodate the repair tube 10; and an ultraviolet lamp 21 disposed inside the inner cavity.

[0055] It should be noted that the expansion band 22 uses a transparent or translucent elastic material that can transmit ultraviolet light, such as a polyurethane elastic film.

[0056] In this embodiment, when the curing device is applied to the repair of the hydrogen storage well 9, the elastic repair tube 10, which is capable of UV curing, is fitted around the outer periphery of the expansion band 22 along the lower shell 24. The curing device and the repair tube 10 are then placed into the hydrogen storage well 9 until the repair tube 10 corresponds to the leak point of the hydrogen storage well 9. Gas is introduced into the inner cavity through the through hole, causing the expansion band 22 to expand outward, thereby causing the outer wall of the repair tube 10 to adhere to the inner wall of the hydrogen storage well 9. The UV lamp 21 located inside the expansion band 22 is turned on, emitting UV light to cure the repair tube 10, fixing it to the inner wall of the hydrogen storage well 9, thus achieving long-term sealing of the leak point of the hydrogen storage well 9 and repairing the hydrogen storage well 9. The cooperation between the repair tube 10 and the curing device can prevent the repair tube 10 from flipping or misaligning during the process of placing it into the hydrogen storage well 9.

[0057] Specifically, the upper shell 23, the lower shell 24, and the expansion band 22 are formed into a spherical structure. This spherical structure is adapted to the hydrogen storage well 9, allowing the curing device to enter the hydrogen storage well 9. Furthermore, the spherical structure allows the elastic and soft expansion band 22 to be located at the position with the largest diameter of the curing device, preventing the outer wall of the upper shell 23 or the lower shell 24 from contacting the inner wall of the hydrogen storage well 9, thereby avoiding damage to the inner wall of the hydrogen storage well 9. On the other hand, the arc-shaped outer wall facilitates the installation of the repair tube 10, allowing the repair tube 10 to move along the arc-shaped outer wall of the lower shell 24 to the outer periphery of the expansion band 22.

[0058] See Figures 1 to 6 As shown, in some embodiments, the expansion band 22 can be detached from the upper housing 23 and the lower housing 24.

[0059] In this embodiment, since the ultraviolet lamp 21 is located inside the cavity, when the ultraviolet lamp 21 emits ultraviolet light, it will irradiate the expansion band 22. After long-term use, the expansion band 22 will age. In order to ensure that the expansion band 22 can maintain sufficient expansion, it is necessary to replace the expansion band 22 regularly.

[0060] Specifically, the edges of the upper shell 23 and the lower shell 24 on opposite sides can form a stepped structure. The expansion band 22 is pasted on one step of the stepped structure. When replacing the expansion band 22, the expansion band 22 is torn off from the upper shell 23 and the lower shell 24. After replacing the expansion band 22, the expansion band 22 is pasted back onto the upper shell 23 and the lower shell 24.

[0061] Specifically, when using the curing device to perform secondary curing on the repair tube 10, first remove the curing device from the hydrogen storage well 9, remove the expansion band 22 and the lower shell 24 to expose the ultraviolet lamp 21, and then place the ultraviolet lamp 21 and the remaining components into the hydrogen storage well 9 until the ultraviolet lamp 21 is inside the repair tube 10. Turn on the ultraviolet lamp 21, at which point the ultraviolet light emitted by the ultraviolet lamp 21 can directly irradiate the repair tube 10 to perform secondary curing. This method is suitable for disposable expansion bands 22 or expansion bands 22 that can be repeatedly and firmly bonded. Of course, other ultraviolet lamps 21 can also be used to directly place into the hydrogen storage well 9 for secondary curing.

[0062] See Figures 1 to 6 As shown, in some embodiments, through holes are formed on the upper housing 23. The through holes include a first through hole and a second through hole. The curing device includes an air pipe 25 that is sealed through the first through hole and a power transmission line 26 that is sealed through the second through hole. The air pipe 25 connects the inner cavity and the air compressor 40. The power transmission line 26 is electrically connected to the power supply and the ultraviolet lamp 21. The curing device also includes a traction tube 27 that is sealed through the upper housing 23. The bottom end of the traction tube 27 is connected to the inner bottom wall of the lower housing 24. The first through hole and the second through hole are both located inside the traction tube 27. Parts of the air pipe 25 and the power transmission line 26 are also passed through the traction tube 27. The part of the traction tube 27 located inside the inner cavity has an air hole, and an air nozzle 28 is connected to the air hole.

[0063] In this embodiment, compressed air generated by the air compressor 40 enters the traction pipe 27 through the air pipe 25 and is output to the inner cavity through the air holes and air nozzles 28 on the traction pipe 27, causing the expansion band 22 to expand. The power transmission line 26 is used to transmit the electricity generated by the power source to the ultraviolet lamp 21, enabling the ultraviolet lamp 21 to emit ultraviolet light. The traction pipe 27 is a rigid pipe, which serves two purposes: firstly, it guides the extension direction of the air pipe 25 and the power transmission line 26; secondly, it is used to place or remove the curing device from the hydrogen storage well 9 through the traction pipe 27; and thirdly, the traction pipe 27 connects the upper shell 23 and the lower shell 24, preventing the weight of the lower shell 24 from being applied to the expansion band 22, thereby preventing the expansion band 22 from being stretched and thus preventing the expansion band 22 from being torn or damaged.

[0064] Specifically, the traction tube 27 is detachably connected to the lower housing 24, for example, by a threaded connection: a threaded rod extends upward from the center of the inner bottom wall of the lower housing 24, and an internal thread is formed inside the bottom end of the traction tube 27. The lower housing 24 and the traction tube 27 are connected by screwing. After the lower housing 24 and the traction tube 27 are connected, the expansion band 22 is then bonded. The traction tube 27 also has an outlet, through which the power transmission line 26 passes and is electrically connected to the ultraviolet lamp 21. The ultraviolet lamp 21 has a ring structure and is fitted and fixed on the outer circumference of the traction tube 27. The ultraviolet lamp 21 is located inside the annular space enclosed by the expansion band 22, so that the ultraviolet light emitted by the ultraviolet lamp 21 can act on the entire circumference of the repair tube 10.

[0065] See Figures 1 to 6 As shown, in some embodiments, the curing device further includes a positioning block 29 disposed on the outer wall of the upper housing 23.

[0066] In this embodiment, the positioning block 29 is used to position the repair tube 10. After the repair tube 10 is inserted from the lower housing 24 to the bottom of the positioning block 29, it is located on the outer periphery of the expansion band 22, which facilitates the insertion of the repair tube 10 and avoids the misalignment of the repair tube 10 and the expansion band 22.

[0067] Specifically, the positioning blocks 29 are multiple blocks evenly spaced along the outer periphery of the upper shell 23.

[0068] See Figures 1 to 6 As shown, in some embodiments, the solidification device is applied to the above-described hydrogen storage well repair method.

[0069] In this embodiment, the hydrogen storage well repair method uses a curing device, which has all the technical effects of the curing device. Similarly, the curing device has all the technical effects of the corresponding application process in the hydrogen storage well repair method, which will not be repeated here.

[0070] The present invention also provides a hydrogen storage well repair device, comprising: a repair tube 10, the repair tube 10 being elastic and capable of ultraviolet curing; a tensioning member, the tensioning member being capable of stretching the repair tube 10 so that its outer wall surface fits against the inner wall surface of the hydrogen storage well 9; and a curing device, the curing device comprising an ultraviolet lamp 21 that can be located inside the repair tube 10, so as to cure the repair tube 10 and adhere it to the inner wall surface of the hydrogen storage well 9.

[0071] In this embodiment, a hydrogen storage well repair device is used to repair the hydrogen storage well 9. When the hydrogen storage well 9 leaks, the repair tube 10 is placed inside the hydrogen storage well 9. Utilizing the elastic deformation properties of the repair tube 10, external force is applied to make the outer wall of the repair tube 10 adhere to the inner wall of the hydrogen storage well 9. At this time, the repair tube 10 seals the leak point from the inside of the hydrogen storage well 9. Then, the repair tube 10 is cured using an ultraviolet lamp 21. The repair tube 10 is fixed at the leak point, achieving long-term sealing of the leak point and completing the repair of the hydrogen storage well 9.

[0072] Specifically, the repair tube 10 includes an inner tube 11 and an outer tube 12 sleeved around the outer periphery of the inner tube 11. The two are sealed and fixed together. The inner tube 11 is a hydrogen-resistant organic material with hydrogen-blocking function, preferably epoxy resin. The outer tube 12 is a UV-curable material, preferably a low molecular weight (about 2500) prepolymer, such as urethane acrylate (polyurethane acrylate), epoxy acrylate, polyester acrylate or polyether acrylate, vinyl ether.

[0073] See Figures 1 to 6 As shown, in some embodiments, the hydrogen storage well repair equipment further includes a positioning component, which includes a predetermined number of support airbags 31, a pull ring 32 fixed to the outer edge of the support airbag 31, and a pull rope 33 passing through the pull ring 32. The pull rope 33 is used to put the support airbag 31 into the hydrogen storage well 9 and pull the support airbag 31 out of the hydrogen storage well 9.

[0074] In this embodiment, after the support airbag 31 is placed into the hydrogen storage well 9, the pull rope 33 is also placed into the hydrogen storage well 9 to avoid the pull rope 33 affecting the fit between the repair tube 10 and the hydrogen storage well 9. After the repair tube 10 is fixed in the hydrogen storage well 9, the pull rope 33 is removed from the hydrogen storage well 9 using clamps or other tools, and then the support airbag 31 is removed from the hydrogen storage well 9 through the pull rope 33.

[0075] Specifically, the support airbag 31 has a cylindrical structure, its size adapted to the size of the hydrogen storage well 9. The outer wall of the support airbag 31 is attached to the inner wall of the hydrogen storage well 9, serving to position and stabilize the inflated airbag, while also preventing items or parts from falling to the bottom of the hydrogen storage well 9. The specific number of support airbags 31 is determined according to the location of the leak point. The hydrogen storage well 9 is a large-diameter, shallow-depth well structure, and using multiple support airbags 31 for positioning provides flexibility, feasibility, and ease of operation. The vertical dimensions of each support airbag 31 can be the same or different. The support airbag 31 is made of rubber material produced by high-temperature vulcanization of polymer synthetic materials such as rubber and fiber fabric.

[0076] The support airbag 31 has all the technical effects produced in the process of applying it to the hydrogen storage well repair method. The support airbag 31 used in the hydrogen storage well repair method has all the technical solutions and all the technical effects of the support airbag 31 of the hydrogen storage well repair equipment, which will not be repeated here.

[0077] See Figures 1 to 6 As shown, in some embodiments, the curing device is the curing device described above.

[0078] In this embodiment, the curing device of the hydrogen storage well repair equipment has all the technical solutions and effects of the above-mentioned curing device, which will not be repeated here.

[0079] See Figures 1 to 6 As shown, in some embodiments, the hydrogen storage well repair equipment is applied to the above-described hydrogen storage well repair method.

[0080] In this embodiment, the hydrogen storage well repair equipment has all the technical effects of the corresponding application process in the hydrogen storage well repair method. Similarly, the hydrogen storage well repair method using the hydrogen storage well repair equipment has all the technical effects of the corresponding components, which will not be repeated here.

[0081] Example:

[0082] Repair work was carried out on hydrogen storage well 9, which has a depth of 6m, a diameter of 339.7mm, and a leak point located at a depth of 3m. The operation was as follows:

[0083] Three support airbags 31, each 90 cm high and 338.0 mm in diameter, were placed inside the hydrogen storage well 9.

[0084] Using a curing device with a diameter of 339.0 mm, the curing device together with the repair tube 10 sleeved around the expansion band 22 is placed into the hydrogen storage well 9 until the lower shell 24 of the curing device contacts the top of the uppermost support airbag 31. Before the repair tube 10 is placed into the hydrogen storage well 9, the repair tube 10 is placed under conditions without ultraviolet light.

[0085] Turn on the air compressor 40 to allow compressed air to enter the traction pipe 27 along the air pipe 25, and then output it to the inner cavity through the air hole and air nozzle 28 in sequence, until the expansion band 22 expands to make the outer wall of the repair pipe 10 fit against the inner wall of the hydrogen storage well 9.

[0086] Turn on the power, and the ultraviolet lamp 21 will be powered on and emit ultraviolet light to irradiate the repair tube 10, causing it to harden and solidify. After a predetermined irradiation time, the repair tube 10 will be adhered and fixed to the inner wall of the hydrogen storage well 9. This step corresponds to... Figure 1 ;

[0087] Turn off the power and air compressor 40, and remove the solidification device from the hydrogen storage well 9;

[0088] Remove the lower housing 24 and expansion band 22 to expose the ultraviolet lamp 21, and put the ultraviolet lamp 21 together with the remaining parts into the hydrogen storage well 9 until the ultraviolet lamp 21 is inside the repair tube 10.

[0089] Turn on the power, and the ultraviolet lamp 21 will be powered on and emit ultraviolet light to irradiate the repair tube 10, thus performing a secondary curing of the repair tube 10. Irradiation will continue for a predetermined time until the repair tube 10 is firmly adhered and fixed to the inner wall of the hydrogen storage well 9. This step corresponds to... Figure 2 ;

[0090] Remove UV lamp 21 and the remaining components;

[0091] The support airbag 31 has been removed. The hydrogen storage well 9 has been repaired.

[0092] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A method for repairing hydrogen storage wells, characterized in that, Includes the following steps: S1. Place the elastic and UV-curable repair tube (10) into the hydrogen storage well (9) so that the outer wall of the repair tube (10) corresponds to the leakage point of the hydrogen storage well (9); S2. Use the tensioning component to stretch the repair tube (10) until its outer wall surface is in contact with the inner wall surface of the hydrogen storage well (9); as well as S3. Use an ultraviolet lamp (21) to irradiate the repair tube (10) inside the lumen of the repair tube (10) so that the repair tube (10) is cured and attached to the inner wall of the hydrogen storage well (9).

2. The method for repairing hydrogen storage wells according to claim 1, characterized in that, In step S2, the tensioning component expands the repair tube (10) by inflating it with air within the tube cavity.

3. The hydrogen storage well repair method according to claim 2, characterized in that, The supporting component is an inflatable airbag with a ring structure that can transmit ultraviolet light.

4. The hydrogen storage well repair method according to claim 3, characterized in that, The method further includes, before step S1: fitting the repair tube (10) around the outer periphery of the expansion bladder, so that the two form an integral structure that can be placed together into the hydrogen storage well (9); Step S2 includes: inflating the inside of the expansion bladder, so that the expansion bladder pushes the outer wall of the repair tube (10) to fit against the inner wall of the hydrogen storage well (9); Step S3 includes: using the ultraviolet lamp (21) to irradiate the inside of the inflatable airbag, so that the ultraviolet light passes through the inflatable airbag and irradiates the repair tube (10); And / or, The method further includes the following after step S3: The gas inside the inflatable airbag is extracted, causing the inflatable airbag to contract and detach from the repair tube (10); The inflatable airbag is removed from the outside of the repair tube (10); and The ultraviolet lamp (21) is used to irradiate the repair tube (10) again inside the cavity of the repair tube (10) to perform secondary curing on the repair tube (10).

5. The hydrogen storage well repair method according to claim 4, characterized in that, The inflatable airbag includes an upper shell (23), a lower shell (24), and an elastic inflatable band (22) that is light-transmitting. The axial length of the inflatable band (22) is greater than or equal to the axial length of the repair tube (10). The inflatable band (22) is sealed between the upper shell (23) and the lower shell (24), so that the three form an inflatable airbag with an inner cavity, so that the gas filled into the inner cavity can inflate the inflatable band (22). The ultraviolet lamp (21) is fixed inside the inner cavity.

6. The hydrogen storage well repair method according to claim 5, characterized in that, The method further includes, before step S1: inserting a positioning component into the hydrogen storage well (9) so that the top of the positioning component is kept at a predetermined vertical distance from the leak point of the hydrogen storage well (9) to position the repair pipe (10) into the hydrogen storage well (9); In step S1, the repair tube (10) is placed into the hydrogen storage well (9) until the repair tube (10) is positioned by the positioning component to the location corresponding to the leak point of the hydrogen storage well (9).

7. The method for repairing hydrogen storage wells according to claim 6, characterized in that, The positioning component is a predetermined number of support airbags (31), and the repair tube (10) is positioned to the location corresponding to the leak point of the hydrogen storage well (9) by contacting the positioning component through the lower housing (24).

8. A curing apparatus, characterized in that, For hydrogen storage well remediation, the solidification device includes: Upper shell (23); The lower housing (24) is connected to the upper housing (23), and the upper housing (23) and / or the lower housing (24) are provided with through holes for gas flow; An expansion band (22) is sealed between the upper housing (23) and the lower housing (24), forming an inner cavity and an expansion airbag. The expansion band (22) can expand outward under the action of gas injected into the inner cavity through the through hole. The outer wall of the expansion band (22) can be fitted with a repair tube (10). Ultraviolet lamp (21), the ultraviolet lamp (21) is disposed inside the cavity.

9. The curing apparatus according to claim 8, characterized in that, The curing device is applied to the hydrogen storage well repair method as described in any one of claims 1 to 7.

10. A hydrogen storage well repair device, characterized in that, include: Repair tube (10), wherein the repair tube (10) is elastic and capable of UV curing; A tensioning component that can stretch the repair tube (10) until its outer wall surface fits against the inner wall surface of the hydrogen storage well (9); as well as A curing device comprising an ultraviolet lamp (21) that can be located inside the repair tube (10) to cure the repair tube (10) and adhere it to the inner wall of the hydrogen storage well (9).

11. The hydrogen storage well repair equipment according to claim 10, characterized in that, The curing device is the curing device as described in claim 8 or 9; or... The hydrogen storage well repair equipment is applied to the hydrogen storage well repair method as described in any one of claims 1 to 7.

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