A hydrogen storage well positioning device, a hydrogen storage well system and a construction method thereof

Abstract

The present invention discloses a hydrogen storage well positioning device and a hydrogen storage well system and a construction method thereof, which are connected to the hydrogen storage well, and the hydrogen storage well is provided with a hydrogen storage well bore, and includes: a mounting body, a clamping assembly and a lifting assembly, the mounting body is connected to the hydrogen storage well bore, and a pouring hole is provided relative to the hydrogen storage well bore, the clamping assembly includes at least two clamping members, at least two clamping members are relatively arranged on both sides of the pouring hole, and are both slidably connected to the mounting body, and the two clamping members can slide towards or away from each other, and are used to clamp or release the hydrogen storage well shaft, the lifting assembly is connected to the hydrogen storage well bore and the mounting body, and is used to drive the hydrogen storage well shaft to slide towards or away from the hydrogen storage well bore, and to be inserted into the hydrogen storage well bore. The present invention can solve the problem of unqualified cementing quality of the hydrogen storage well structure due to the inability to stably and centrally lower the hydrogen storage well shaft when placing it into the hydrogen storage well bore.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage wells, and in particular to a hydrogen storage well positioning device and a hydrogen storage well system and a construction method thereof. Background Art

[0002] Taking advantage of the fact that underground temperature, humidity and other environments are not easily affected by external factors, hydrogen storage in hydrogen storage wells can solve the safety, fire protection and other problems of ground hydrogen storage.

[0003] For example, the Chinese invention patent with application number: CN202310306810.9, named: A clustered hydrogen storage well in an abandoned mine shaft and its construction method, which includes: The clustered hydrogen storage well is composed of a stable structure and a hydrogen storage well structure. The hydrogen storage well structure is arranged in the abandoned mine shaft, including a cement protective layer, an asphalt sand glue buffer layer, a steel lining, and a hydrogen storage well arranged from the outside to the inside; The stable structure is composed of a stable plate and an enlarged head anchor rod. The stable plate is arranged at the top of the hydrogen storage well, and the structure is reinforced and stabilized by the enlarged head anchor rod. At the same time, a venting channel is provided to timely remove leaked hydrogen. The device uses a double-layer composite structure to ensure good airtightness, while solving the problem of idle resources in abandoned mines and realizing large-scale and safe storage of hydrogen. However, when the hydrogen storage wellbore is placed in the wellbore of the hydrogen storage well, it cannot be stably lowered in the center, resulting in unqualified cementing quality of the hydrogen storage well structure.

[0004] Therefore, there is an urgent need for a hydrogen storage well positioning device, a hydrogen storage well system and a construction method thereof, which are used to solve the problem in the prior art that the hydrogen storage well barrel cannot be stably and centrally lowered into the hydrogen storage well bore, resulting in unqualified cementing quality of the hydrogen storage well structure. Summary of the invention

[0005] In view of this, it is necessary to provide a hydrogen storage well positioning device and a hydrogen storage well system and a construction method thereof to solve the technical problem in the prior art that the hydrogen storage well bore cannot be stably and centrally lowered into the hydrogen storage well bore, resulting in unqualified cementing quality of the hydrogen storage well structure.

[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides a hydrogen storage well positioning device connected to a hydrogen storage well, wherein the hydrogen storage well is provided with a hydrogen storage well hole, comprising:

[0007] The mounting body is connected to the wellbore of the hydrogen storage well and has a pouring hole relative to the wellbore of the hydrogen storage well;

[0008] A clamping assembly, comprising at least two clamping members, wherein the at least two clamping members are relatively arranged on both sides of the pouring hole and are both slidably connected to the mounting body, and the two clamping members can slide towards or away from each other to clamp or release the wellbore of the hydrogen storage well; and

[0009] A lifting assembly is connected to the hydrogen storage well bore and the mounting body, and is used to drive the hydrogen storage well barrel to slide close to or away from the hydrogen storage well bore, and to be inserted into the hydrogen storage well bore.

[0010] Furthermore, the mounting body includes a lifting platform, an installation platform and a guide member, the lifting platform is arranged above the wellbore of the hydrogen storage well, and can slide close to or away from the wellbore of the hydrogen storage well, and the lifting platform is formed with the casting hole relative to the wellbore of the hydrogen storage well, the installation platform is spaced apart from the lifting platform and connected to the lifting platform, the installation platform is provided with a clamping hole relative to the casting hole, at least two of the clamping members are relatively arranged on both sides of the clamping hole, and are both slidably connected to the mounting platform, one end of the guide member is connected to the lifting platform, and the other end is connected to the wellbore of the hydrogen storage well, and is communicated with the wellbore of the hydrogen storage well, and the length of the guide member can be extended or shortened.

[0011] Furthermore, the guide member includes a first material guide cylinder, a second material guide cylinder and at least one first locking portion, the first material guide cylinder is coaxially arranged with the wellbore of the hydrogen storage well and connected to the wellbore of the hydrogen storage well, one end of the second material guide cylinder is slidably sleeved on the first material guide cylinder, and the other end is connected to the casting hole, the first locking portion is connected to the second material guide cylinder and is detachably connected to the first material guide cylinder, and is used to limit the second material guide cylinder from sliding relative to the first material guide cylinder.

[0012] Furthermore, the number of the clamping members in the clamping assembly is four, and the clamping members include a guide block, a clamping block and a second locking portion. The guide block is arranged along the radial direction of the clamping hole, and the four guide blocks are arranged at intervals along the circumferential direction of the clamping hole. The clamping block is slidably connected to the guide block along the setting direction of the guide block. The second locking portion is connected to the clamping block and is detachably connected to the guide block, so as to limit the sliding of the clamping block relative to the guide block.

[0013] Furthermore, the guide block is provided with a first sliding groove along its setting direction, the clamping block has a connecting end and an arc-shaped clamping end, the connecting end of the clamping block is formed with a sliding groove relative to the guide block, the connecting end of the clamping block is slidably sleeved on the guide block through the sliding groove, and the connecting end of the clamping block is provided with a second sliding groove relative to the first sliding groove, the second sliding groove is connected with the sliding groove, the second locking portion passes through the second sliding groove and is detachably arranged on the first sliding groove, and the arc-shaped clamping end of the clamping block is arranged relative to the hydrogen storage well shaft, and can abut against the outer wall of the hydrogen storage well shaft.

[0014] Furthermore, the lifting assembly includes four support seats, four sliding rods and four driving members. The four support seats are evenly distributed at four right angles of the lifting platform. The support seats are provided with lifting holes relative to the lifting platform. The sliding rods are arranged in a one-to-one correspondence with the support seats. One end of the sliding rod is connected to the lifting platform, and the other end is slidably inserted in the lifting hole. The driving member is arranged in a one-to-one correspondence with the sliding rod, and the driving member is connected to the support seat and the sliding rod, so as to drive the sliding rod to slide relative to the support seat.

[0015] Furthermore, the side wall of the support seat is also provided with an adjusting groove, and the adjusting groove is communicated with the lifting hole. The driving member includes a first rack, a second rack, an adjusting gear and an adjusting wheel. The first rack is arranged along the axial direction of the lifting hole and is connected to the inner wall of the lifting hole. The second rack is arranged along the axial direction of the sliding rod and is connected to the sliding rod. The adjusting gear is rotatably built into the lifting hole and meshes with the first rack and the second rack. The adjusting gear is provided with a through hole relative to the adjusting groove. One end of the adjusting wheel passes through the adjusting groove and the through hole in sequence and is rotatably connected to the inner wall of the lifting hole. The adjusting gear is fixedly sleeved on one end of the adjusting wheel through the through hole, and the other end of the adjusting wheel is externally placed on the support seat.

[0016] The technical solution of the present invention also provides a hydrogen storage well system, including: a hydrogen storage well structure and the above-mentioned hydrogen storage well positioning device, the hydrogen storage well structure includes a hydrogen storage well hole, a hydrogen storage well shaft, a cement ring, a hydrogen storage capsule, an anchor assembly and a sealing assembly, the hydrogen storage well shaft is inserted in the hydrogen storage well hole, the cement ring is arranged between the inner wall of the hydrogen storage well hole and the outer wall of the hydrogen storage well shaft, the hydrogen storage capsule is built into the hydrogen storage well shaft, the anchor assembly includes a fixed plate and a plurality of fixed anchors, the fixed plate is fixedly sleeved on the hydrogen storage well shaft, and the plurality of fixed anchors are connected to the fixed plate for connecting the fixed plate and the hydrogen storage well shaft to the hydrogen storage well, the sealing assembly includes a sealing member and a hydrogen charging and discharging pipeline, the sealing member is sealingly arranged on the top of the hydrogen storage well shaft, and the hydrogen charging and discharging pipeline is communicated with the interior of the hydrogen storage well shaft.

[0017] Furthermore, the fixed anchor includes an anchor rod and an expansion part, one end of the anchor rod is detachably connected to the fixing plate, the expansion part is connected to the other end of the anchor rod and inserted into the soil outside the circumference of the hydrogen storage wellbore, and the volume of the expansion part can be expanded or reduced along its circumferential direction.

[0018] The technical solution of the present invention also provides a hydrogen storage well construction method, using the above-mentioned hydrogen storage well system, the specific steps are as follows:

[0019] Make the hydrogen storage wellbore, complete the production and processing of the hydrogen storage wellbore according to the design drawings, and then conduct ultrasonic testing and hydrogen permeation test;

[0020] The hydrogen storage well positioning device is moved to the position of the hydrogen storage well hole, and the lifting and leveling of the clamping assembly are realized by the lifting assembly, and then the guide member is extended into the hydrogen storage well hole, and the hydrogen storage well shaft is placed in the clamping hole, and the hydrogen storage well shaft is limited by the clamping block, and the hydrogen storage well shaft is assisted to be sunk into the hydrogen storage well hole, and then cement is poured between the hydrogen storage well hole and the hydrogen storage well shaft through the pouring hole to form a cement ring, and finally the hydrogen storage capsule is lowered and the sealing assembly is installed to fix the hydrogen storage capsule;

[0021] Level the site, locate the construction axis of the anchor, use a drill to construct the anchor pile hole, then lower the anchor into the pile hole, pour concrete and maintain the shape;

[0022] Level the site, locate the construction axis of the fixed plate, make and process the fixed plate template according to the actual drawing, tie the fixed plate steel bars, pour concrete and sprinkle water for maintenance. After the concrete reaches the designed strength, tension and fix the fixed anchor, and finally use micro-expansion concrete to fill and smooth the anchor groove.

[0023] Compared with the prior art, the beneficial effects of the present invention include: a casting hole is opened on the installation body relative to the hydrogen storage well bore, which is used to sink the hydrogen storage well shaft and cast cement; at least two clamping members are relatively arranged on both sides of the casting hole, and are both slidably connected to the installation body; after the at least two clamping members slide close to or away from each other, they can clamp and release the hydrogen storage well shaft, so as to stably place the hydrogen storage well shaft in the center; the lifting assembly is connected to the hydrogen storage well bore and the installation body, and is used to drive the installation body and the hydrogen storage well shaft to slide close to or away from the hydrogen storage well bore, so that the hydrogen storage well shaft is lowered into the hydrogen storage well bore. Compared with the prior art, a clamping member is set relative to the wellbore of the hydrogen storage well to clamp the wellbore of the hydrogen storage well, and at the same time a lifting assembly is used to drive the wellbore of the hydrogen storage well to slide close to the wellbore of the hydrogen storage well and allow the wellbore of the hydrogen storage well to be sunk into the wellbore of the hydrogen storage well. This not only provides a stable clamping force or supporting force for the hydrogen storage tank, but also ensures that it is stably lowered in the center. This can solve the technical problem in the prior art that the hydrogen storage wellbore cannot be stably lowered in the center when it is placed into the wellbore of the hydrogen storage well, resulting in unqualified cementing quality of the hydrogen storage well structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional structural schematic diagram of a hydrogen storage well positioning device provided by an embodiment of the present invention connected to a hydrogen storage well bore;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a hydrogen storage well positioning device provided by an embodiment of the present invention;

[0026] Figure 3 It is a partial three-dimensional structural schematic diagram of a hydrogen storage well positioning device provided by an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of a three-dimensional structure in which a support seat, a sliding rod and a driving member are connected according to an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of a three-dimensional structure in which an adjusting wheel and an adjusting gear provided in an embodiment of the present invention are connected;

[0029] Figure 6 It is a schematic diagram of a three-dimensional structure in which a first cylinder, a second cylinder and a third sealing ring are connected, provided in an embodiment of the present invention;

[0030] Figure 7 It is a schematic diagram of a three-dimensional structure in which a first cylinder, a second cylinder, a third sealing ring and a hydrogen storage capsule are connected, provided in an embodiment of the present invention;

[0031] Figure 8 is a schematic cross-sectional structural diagram of a hydrogen storage well system provided by an embodiment of the present invention;

[0032] Fig. 9 is a schematic diagram of the three-dimensional structure of a fixing anchor provided in an embodiment of the present invention;

[0033] Fig.10 is a schematic cross-sectional structural diagram of a fixing anchor provided by an embodiment of the present invention;

[0034] Fig.11 is a schematic cross-sectional structural diagram of a fixing anchor provided by an embodiment of the present invention from another viewing angle;

[0035] Fig.12 is a schematic cross-sectional structural diagram of a fixing anchor provided by an embodiment of the present invention in another state;

[0036] Fig.13 is a schematic cross-sectional structural diagram of a fixing anchor provided by an embodiment of the present invention in another state and from another viewing angle;

[0037] Fig.14 It is a schematic cross-sectional structural diagram of the connection between the sliding inner rod and the clamping part provided by an embodiment of the present invention;

[0038] Fig.15 It is a schematic cross-sectional structural diagram of the first cylinder provided in an embodiment of the present invention connected with the hydrogen storage capsule and the sealing assembly.

[0039] Description of reference numerals:

[0040] Hydrogen storage well bore 1;

[0041] Mounting body 2;

[0042] Casting hole 21;

[0043] Lifting platform 22;

[0044] Mounting platform 23;

[0045] Guide member 24;

[0046] A first material guide cylinder 241;

[0047] A second material guide cylinder 242;

[0048] A first locking portion 243;

[0049] Support rod 25;

[0050] Clamping assembly 3;

[0051] Clamping member 31;

[0052] Guide block 311;

[0053] Clamping block 312;

[0054] A second locking portion 313;

[0055] Lifting assembly 4;

[0056] Support seat 41;

[0057] Sliding rod 42;

[0058] Actuator 43;

[0059] A first rack 431;

[0060] A second rack 432;

[0061] Adjusting gear 433;

[0062] Adjustment wheel 434;

[0063] Hydrogen storage well shaft 5;

[0064] A first cylinder 51;

[0065] The second cylinder 52;

[0066] A third sealing ring 53;

[0067] Cement ring 6;

[0068] Hydrogen storage capsule 7;

[0069] Anchor assembly 8;

[0070] Fixed plate 81;

[0071] Anchor 82;

[0072] Anchor 821;

[0073] Fixed rod 8211;

[0074] Sliding inner rod 8212;

[0075] enlarged part 822;

[0076] Rotating blades 8221;

[0077] Rotating shaft 8222;

[0078] Connecting rod 8223;

[0079] A first elastic portion 8224;

[0080] A clamping portion 823;

[0081] Triangular buckle 8231;

[0082] A second elastic portion 8232;

[0083] Sealing assembly 9;

[0084] Seal 91;

[0085] Sealing block 911;

[0086] A first sealing ring 912;

[0087] and a second sealing ring 913;

[0088] Hydrogen charging and discharging pipeline 92. DETAILED DESCRIPTION

[0089] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0090] See also Figures 1 to 5 The present invention provides a hydrogen storage well positioning device, which is connected to the hydrogen storage well. The hydrogen storage well is provided with a hydrogen storage well bore 1, and includes: a mounting body 2, a clamping assembly 3 and a lifting assembly 4. The mounting body 2 is connected to the hydrogen storage well bore 1, and is provided with a pouring hole 21 relative to the hydrogen storage well bore 1. The clamping assembly 3 includes at least two clamping members 31, and the at least two clamping members 31 are relatively arranged on both sides of the pouring hole 21, and are both slidably connected to the mounting body 2, and the two clamping members 31 can slide towards or away from each other, and are used to clamp or release the hydrogen storage well shaft 5. The lifting assembly 4 is connected to the hydrogen storage well bore 1 and the mounting body 2, and is used to drive the hydrogen storage well shaft 5 to slide towards or away from the hydrogen storage well, and to be inserted into the hydrogen storage well bore 1.

[0091] In the present device, the mounting body 2 is provided with a pouring hole 21 relative to the hydrogen storage well bore 1, which is used to sink the hydrogen storage well shaft 5 and pour cement. At least two clamping members 31 are relatively arranged on both sides of the pouring hole 21, and are both slidably connected to the mounting body 2. After the at least two clamping members 31 slide towards or away from each other, they can clamp and release the hydrogen storage well shaft 5, so as to stably place the hydrogen storage well shaft 5 in the center. The lifting assembly 4 is connected to the hydrogen storage well bore 1 and the mounting body 2, and is used to drive the mounting body 2 and the hydrogen storage well shaft 5 to slide towards or away from the hydrogen storage well bore 1, so that the hydrogen storage well shaft 5 is lowered into the hydrogen storage well bore 1.

[0092] Compared with the prior art, a clamping member 31 is provided relative to the hydrogen storage well bore 1 to clamp the hydrogen storage well shaft 5, and at the same time, the lifting assembly 4 is used to drive the hydrogen storage well shaft 5 to slide close to the hydrogen storage well bore 1, and the hydrogen storage well shaft 5 is sunk into the hydrogen storage well bore 1, which not only provides a stable clamping force or supporting force for the hydrogen storage tank, but also ensures stable and centered lowering. This can solve the technical problem in the prior art that the hydrogen storage well shaft cannot be stably and centered when being placed into the hydrogen storage well bore 1, resulting in unqualified cementing quality of the hydrogen storage well structure, and avoid safety accidents caused by the hydrogen storage well shaft bursting out of the ground.

[0093] Furthermore, the hydrogen storage well borehole here can be an abandoned mine, or a newly excavated hydrogen storage well borehole 1, etc. This is a conventional setting known to those skilled in the art and will not be described in detail.

[0094] like Figures 1 to 3 As shown, the mounting body 2 includes a lifting platform 22, a mounting platform 23 and a guide member 24. The lifting platform 22 is arranged above the wellbore 1 of the hydrogen storage well and can slide close to or away from the hydrogen storage well. The lifting platform 22 is formed with a pouring hole 21 relative to the wellbore 1 of the hydrogen storage well. The mounting platform 23 is spaced apart from the lifting platform 22 and connected to the lifting platform 22. The mounting platform 23 is provided with a clamping hole relative to the pouring hole 21. At least two clamping members 31 are relatively arranged on both sides of the clamping hole and are slidably connected to the mounting platform 23. One end of the guide member 24 is connected to the lifting platform 22 and the other end is connected to the hydrogen storage well, and is communicated with the wellbore 1 of the hydrogen storage well. The length of the guide member 24 can be extended or shortened.

[0095] An installation platform 23 is provided on the lifting platform 22, and a clamping member 31 is slidably connected to the installation platform 23. Here, the lifting platform 22 and the installation platform 23 are both used to connect the hydrogen storage wellbore 5 to the lifting assembly 4, and the lifting and lowering of the lifting platform 22 is coordinated by a guide member 24 with a retractable length.

[0096] Furthermore, the mounting body 2 in the present device further includes four support rods 25 , which are evenly arranged at four right angles of the mounting platform 23 , and one end of the support rod 25 is connected to the lifting platform 22 , and the other end is connected to the mounting platform 23 .

[0097] As an implementation method, Figure 1 As shown, the guide member 24 includes a first material guide cylinder 241, a second material guide cylinder 242 and at least one first locking portion 243. The first material guide cylinder 241 is coaxially arranged with the hydrogen storage well bore 1 and connected to the hydrogen storage well bore 1. One end of the second material guide cylinder 242 is slidably sleeved on the first material guide cylinder 241, and the other end is connected to the casting hole 21. The first locking portion 243 is connected to the second material guide cylinder 242 and is detachably connected to the first material guide cylinder 241, so as to limit the second material guide cylinder 242 from sliding relative to the first material guide cylinder 241.

[0098] The second material guide cylinder 242 is slidably mounted on the first material guide cylinder 241 , and the first locking portion 243 is used to limit and lock the sliding movement of the second material guide cylinder 242 relative to the first material guide cylinder 241 , so as to achieve the extension and retraction of the guide member 24 , thereby guiding the poured cement into the wellbore 1 of the hydrogen storage well.

[0099] Furthermore, the first locking portion 243 here is a threaded connection structure of a screw or bolt and a nut washer commonly found on the market, which is used to achieve a detachable connection. This is a conventional setting known to those skilled in the art and will not be elaborated on here.

[0100] like Figure 2 , Figure 3 As shown, there are four clamping members 31 in the clamping assembly 3, and the clamping member 31 includes a guide block 311, a clamping block 312 and a second locking portion 313. The guide block 311 is arranged along the radial direction of the clamping hole, and the four guide blocks 311 are arranged at intervals along the circumferential direction of the clamping hole. The clamping block 312 is slidably connected to the guide block 311 along the setting direction of the guide block 311, and the second locking portion 313 is connected to the clamping block 312 and is detachably connected to the guide block 311, so as to limit the sliding of the clamping block 312 relative to the guide block 311.

[0101] The four clamping blocks 312 are evenly distributed in the circumferential direction of the hydrogen storage wellbore 5, and are used to provide a stable clamping force or supporting force. The second locking portion 313 restricts the sliding of the clamping block 312 relative to the guide block 311, so that the clamping force can be adjusted, thereby achieving the clamping or release of the material.

[0102] As an implementation method, Figure 2 , Figure 3As shown, the guide block 311 is provided with a first slide groove along its setting direction, the clamping block 312 has a connecting end and an arc-shaped clamping end, the connecting end of the clamping block 312 is formed with a sliding groove relative to the guide block 311, the connecting end of the clamping block 312 is slidably sleeved on the guide block 311 through the sliding groove, and the connecting end of the clamping block 312 is provided with a second slide groove relative to the first slide groove, the second slide groove is connected to the sliding groove, the second locking portion 313 passes through the second slide groove and is detachably arranged on the first slide groove, the arc-shaped clamping end of the clamping block 312 is arranged relative to the hydrogen storage well shaft 5, and can abut against the outer wall of the hydrogen storage well shaft 5.

[0103] The connecting end of the clamping block 312 is slidably matched with the guide block 311, and the arc-shaped clamping end of the clamping block 312 is arranged to fit the arc outer wall of the hydrogen storage wellbore 5, so that the clamping force it provides is more stable.

[0104] Furthermore, the second locking portion 313 here is a threaded connection structure of a screw or bolt and a nut washer commonly found on the market, which is used to achieve a detachable connection. This is a conventional setting known to those skilled in the art and will not be elaborated on here.

[0105] like Figure 2 , Figure 4 and Figure 5 As shown, the lifting assembly 4 includes four support seats 41, four sliding rods 42 and four driving members 43. The four support seats 41 are evenly distributed at four right angles of the lifting platform 22. The support seats 41 are provided with lifting holes relative to the lifting platform 22. The sliding rods 42 are arranged in a one-to-one correspondence with the support seats 41. One end of the sliding rod 42 is connected to the lifting platform 22, and the other end is slidably inserted in the lifting hole. The driving member 43 is arranged in a one-to-one correspondence with the sliding rod 42, and the driving member 43 is connected to the support seat 41 and the sliding rod 42, so as to drive the sliding rod 42 to slide relative to the support seat 41.

[0106] The driving member 43 drives the sliding rod 42 to rise and fall relative to the supporting seat 41, thereby driving the lifting platform 22 and the clamped hydrogen storage wellbore 5 to rise and fall, with a simple structure and convenient operation.

[0107] As an implementation method, Figure 4As shown, the side wall of the support seat 41 is also provided with an adjustment groove, which is connected to the lifting hole. The driving member 43 includes a first rack 431, a second rack 432, an adjustment gear 433 and an adjustment wheel 434. The first rack 431 is arranged along the axial direction of the lifting hole and is connected to the inner wall of the lifting hole. The second rack 432 is arranged along the axial direction of the sliding rod 42 and is connected to the sliding rod 42. The adjustment gear 433 is rotatably built into the lifting hole and meshes with the first rack 431 and the second rack 432. The adjustment gear 433 is provided with a through hole relative to the adjustment groove. One end of the adjustment wheel 434 passes through the adjustment groove and the through hole in sequence and is rotatably connected to the inner wall of the lifting hole. The adjustment gear 433 is fixedly sleeved on one end of the adjustment wheel 434 through the through hole, and the other end of the adjustment wheel 434 is externally placed on the support seat 41.

[0108] Through the meshing of the gear and the rack, the adjusting gear 433 can drive the sliding rod 42 to rise and fall relative to the supporting seat 41 as the adjusting wheel 434 rotates.

[0109] Furthermore, when in use, the sliding rod 42 is first driven to drive the lifting platform 22 to slide away from the hydrogen storage well, and then the hydrogen storage well shaft 5 is clamped and installed in the clamping hole, and finally the sliding rod 42 is driven to drive the lifting platform 22 to slide close to the hydrogen storage well bore 1, and the hydrogen storage well shaft 5 is successfully sunk into the hydrogen storage well bore 1.

[0110] The present invention also provides a hydrogen storage well system, including: a hydrogen storage well structure and a hydrogen storage well positioning device as described above, the hydrogen storage well structure including a hydrogen storage well bore 1, a hydrogen storage well shaft 5, a cement ring 6, a hydrogen storage capsule 7, an anchor assembly 8 and a sealing assembly 9, the hydrogen storage well shaft 5 is inserted into the hydrogen storage well bore, the cement ring 6 is arranged between the inner wall of the hydrogen storage well bore and the outer wall of the hydrogen storage well shaft 5, the hydrogen storage capsule 7 is built into the hydrogen storage well shaft 5, the anchor assembly 8 includes a fixed plate 81 and a plurality of fixed anchors 82, the fixed plate 81 is fixedly sleeved on the hydrogen storage well shaft 5, the plurality of fixed anchors 82 are all connected to the fixed plate 81, and are used to connect the fixed plate 81 and the hydrogen storage well shaft 5 to the hydrogen storage well, the sealing assembly 9 includes a sealing member 91 and a hydrogen charging and discharging pipeline 92, the sealing member 91 is sealingly arranged on the top of the hydrogen storage well shaft 5, and the hydrogen charging and discharging pipeline 92 is communicated with the interior of the hydrogen storage well shaft 5.

[0111] The hydrogen storage well, the hydrogen storage well shaft 5, the cement ring 6, the hydrogen storage capsule 7, the anchor assembly 8 and the sealing assembly 9 can form a stable hydrogen storage well structure and effectively ensure the safety of hydrogen storage.

[0112] Furthermore, the cement ring 6 and the fixed anchors are used to fix and reinforce the wellbore 5 of the hydrogen storage well.

[0113] Among them, the hydrogen storage capsule 7 in the present invention is made of flexible material and is in a contracted state under the condition of not filling with hydrogen. During the process of hydrogen filling, the hydrogen storage capsule 7 gradually expands and fits tightly against the inner wall of the hydrogen storage well shaft 5. The hydrogen storage well shaft 5 and the hydrogen storage capsule 7 are synergistically stressed to avoid damage to the hydrogen storage capsule 7 due to excessive stress. At the same time, the sealing component 9 can be unscrewed to replace the hydrogen storage capsule 7 to avoid sealing failure caused by aging or damage of the hydrogen storage capsule 7 under multiple hydrogen charging and discharging cycles.

[0114] Specifically, Figure 6 As shown, the hydrogen storage wellbore 5 in the present device includes a first cylinder 51, a second cylinder 52 and a third sealing ring 53. One end of the first cylinder 51 is provided with an internal thread, one end of the second cylinder 52 is provided with an external thread, and the first cylinder 51 and the second cylinder 52 are connected by threaded fitting, and the third sealing ring 53 is arranged at the connection between the first cylinder 51 and the second cylinder 52, which will not be described in detail here.

[0115] Specifically, Figure 6 , Figure 7 , Fig.15 As shown, in the present device, a sealing assembly 9 is provided at the top opening of the hydrogen storage well shaft 5, the sealing assembly 9 includes a sealing member 91 and a hydrogen charging and discharging pipeline 92, the sealing member 91 includes a sealing block 911, a first sealing ring 912 and a second sealing ring 913, the sealing block 911 is formed with a threaded sealing structure, the threaded sealing structure of the sealing block 911 is sealed and connected to the top opening of the hydrogen storage well shaft 5, and the first sealing ring 912 and the second sealing ring 913 are sealed and filled between the threaded sealing structure of the sealing block 911 and the top opening of the hydrogen storage well shaft 5, the hydrogen charging and discharging pipeline 92 is connected to the sealing block 911, and is built into the hydrogen storage well shaft 5, which will not be described in detail here.

[0116] like Figures 8 to 14 As shown, the fixed anchor 82 includes an anchor rod 821 and an expansion portion 822. One end of the anchor rod 821 is detachably connected to the fixing plate 81, and the expansion portion 822 is connected to the other end of the anchor rod 821 and inserted into the soil outside the circumference of the hydrogen storage wellbore. The volume of the expansion portion 822 can be expanded or reduced along its circumferential direction.

[0117] By setting the fixing anchor 82, the stability of the connection between the fixing plate 81, the hydrogen storage well shaft 5 and the entire hydrogen storage well structure can be increased.

[0118] Among them, Figures 9 to 14As shown, the anchor rod 821 includes a fixed rod 8211 and a sliding inner rod 8212. The fixed rod 8211 is connected to the fixed plate 81. One end of the sliding inner rod 8212 is connected to the expansion portion 822, and the other end is slidably inserted in the fixed rod 8211. At the same time, the expansion portion 822 also includes eight rotating blades 8221, eight rotating shafts 8222, eight connecting rods 8223 and a first elastic portion 8224. The eight rotating blades 8221 are arranged along the circumferential direction of the sliding inner rod 8212, and the distance between two adjacent rotating blades 8221 is 40 meters. The eight connecting rods 8223 are connected by a rotating shaft 8222, four of the eight connecting rods 8223 form a group, and the two groups of connecting rods 8223 are arranged at intervals along the height direction of the sliding inner rod 8212, and one end of the eight connecting rods 8223 is hinged to the four rotating shafts 8222, and the other ends are hinged to the sliding inner rod 8212, and the first elastic part 8224 is arranged between the two groups of connecting rods 8223 and is respectively connected to the two groups of connecting rods 8223, so as to form a linking rod structure, and the hinged connection structure can realize the increase or decrease of volume.

[0119] Furthermore, if Figures 9 to 14 As shown, when the volume of the expansion portion 822 is normal, the eight rotating blades 8221 surround and form a ring. When the volume of the expansion portion 822 increases, the eight rotating blades 8221 surround and form a diamond-like shape, thereby increasing the volume. This will not be elaborated here.

[0120] Furthermore, the fixing rod 8211 is provided with at least one groove, and the fixing anchor 82 also includes at least one clamping portion 823, the clamping portion 823 includes a triangular buckle 8231 and a second elastic portion 8232, the triangular buckle 8231 is arranged relative to the groove, one end of the second elastic portion 8232 is connected to the sliding inner rod 8212, and the other end is connected to the triangular buckle 8231, which is used to push the triangular buckle 8231 to be clamped in the groove, so as to facilitate the user to change the volume of the expansion portion 822 by adjusting the clamping connection between the triangular buckle 8231 and the groove. The process of changing the volume of the expansion portion 822 will not be described in detail here.

[0121] The present invention also provides a hydrogen storage well construction method, using the above-mentioned hydrogen storage well system, the specific steps are as follows:

[0122] Making the hydrogen storage well shaft 5, completing the manufacturing and processing of the hydrogen storage well shaft according to the design drawings, and then conducting ultrasonic testing and hydrogen permeation test experiments;

[0123] Move the hydrogen storage well positioning device to the position of the hydrogen storage well bore 1, realize the lifting and leveling of the clamping assembly 3 through the lifting assembly 4, then extend the guide member into the hydrogen storage well bore 1, place the hydrogen storage well shaft 5 in the clamping hole, limit the hydrogen storage well shaft 5 through the clamping block 312, assist the hydrogen storage well shaft 5 to sink into the hydrogen storage well bore 1, then pour cement between the hydrogen storage well bore 1 and the hydrogen storage well shaft 5 through the pouring hole 21 to form a cement ring 6, finally lower the hydrogen storage capsule 7 and install the sealing assembly 9 to achieve the fixation of the hydrogen storage capsule 7;

[0124] Level the site, locate the construction axis of the fixed anchor 82, use a drilling machine to construct the pile hole of the fixed anchor 82, then lower the fixed anchor 82 into the pile hole, pour concrete and maintain it;

[0125] Level the site, locate the construction axis of the fixed plate 81, make and process the template of the fixed plate 81 according to the actual drawing, tie the steel bars of the fixed plate 81, pour concrete and sprinkle water for maintenance, after the concrete reaches the designed strength, tension and fix the fixed anchor 82, finally lower the hydrogen storage capsule 7 and install the sealing assembly 9 to fix the hydrogen storage capsule 7.

[0126] According to the specific working process of the present invention, the installation body 2 is provided with a pouring hole 21 relative to the hydrogen storage well bore 1, which is used to sink the hydrogen storage well shaft 5 and pour cement. At least two clamping members 31 are relatively arranged on both sides of the pouring hole 21, and are both slidably connected to the installation body 2. After the at least two clamping members 31 slide towards or away from each other, they can clamp and release the hydrogen storage well shaft 5, so as to stably place the hydrogen storage well shaft 5 in the center. The lifting assembly 4 is connected to the hydrogen storage well and the installation body 2, and is used to drive the installation body 2 and the hydrogen storage well shaft 5 to slide towards or away from the hydrogen storage well, so that the hydrogen storage well shaft 5 is lowered into the hydrogen storage well bore 1. Compared with the prior art, a clamping member 31 is provided relative to the hydrogen storage well bore 1 to clamp the hydrogen storage well shaft 5, and at the same time, a lifting assembly 4 is used to drive the hydrogen storage well shaft 5 to slide close to the hydrogen storage well bore 1, and the hydrogen storage well shaft 5 is sunk into the hydrogen storage well bore 1, which not only provides a stable clamping force or supporting force for the hydrogen storage tank, but also ensures stable and centered lowering.

[0127] Specifically, the construction method of the present invention includes four steps: manufacturing the hydrogen storage wellbore 5 , sinking the hydrogen storage wellbore 5 , constructing the fixed anchor 82 , and constructing the fixed plate 81 .

[0128] The hydrogen storage wellbore 5 is manufactured; the first cylinder 51 and the second cylinder 52 are manufactured and processed according to the design drawings, and the hydrogen storage capsule 7 is pasted on the inner surface of the wellbore with epoxy resin glue, and then ultrasonic detection, hydrogen permeation test and shear tensile test are carried out. After the test is passed, the wellbore manufacturing is completed. The hydrogen storage well shaft 5 is sunk; the hydrogen storage well positioning device is moved to the position of the hydrogen storage well bore 1, and the lifting platform 22 and the positioning device are lifted and leveled by the lifting assembly 4, and then the guide member 24 is extended into the bore of the hydrogen storage well, and the hydrogen storage well shaft 5 is placed in the clamping hole, and the hydrogen storage well shaft 5 is limited by the clamping block 312, and the hydrogen storage well shaft 5 is assisted to be sunk into the hydrogen storage well bore 1, and then cement is poured into the hydrogen storage well bore 1 through the pouring hole 21 of the hydrogen storage well positioning device to form a cement ring 6, and finally the hydrogen storage capsule 7 is lowered and the sealing assembly 9 is installed to complete the construction of the hydrogen storage well shaft 5; the fixed anchor 82 is constructed; the site is leveled, the construction axis of the fixed anchor 82 is positioned, a drilling rig is used to construct the fixed anchor 82 pile hole, and then the fixed anchor is lowered 82 is put into the pile hole, the sliding inner rod 8212 is driven and fixed by the second elastic part 8232 and the triangular buckle. The rotating blade 8221 of the fixed anchor 82 is rotated and twisted through the rotating shaft 8222 under the traction of the connecting rod 8223 to form a tubular structure similar to a diamond. Finally, concrete is poured and cured to form; the fixed plate 81 is constructed; the site is leveled, the construction axis of the fixed plate 81 is located, the template of the fixed plate 81 is made and processed according to the actual drawings, the steel bars of the fixed plate 81 are tied, concrete is poured and watered for curing, and after the concrete reaches the designed strength, the fixed anchor 82 is tensioned and fixed with an anchor, and finally the anchor groove is filled and smoothed with micro-expansion concrete, thus completing the construction of the entire hydrogen storage well structure.

[0129] Furthermore, the hydrogen storage well structure in the present invention is located underground, without the risk of friction, collision, sparks and static electricity, with a small footprint, flexible production layout, and can greatly save land resources. It can be extended to the extreme underground, with a higher upper limit for hydrogen storage. At the same time, the natural confining pressure of the surrounding rock and soil can be used to improve the safety and reliability of the hydrogen storage well structure.

[0130] Furthermore, in the present invention, a hydrogen storage capsule 7 is provided on the inner surface of the wellbore 5 of the hydrogen storage well for storing hydrogen, and double sealing is achieved through threaded interference fit, and a third sealing ring 53 is provided at the wellbore connection portion, and a first sealing ring 912 and a second sealing ring 913 are provided at the contact portion between the sealing device and the wellbore for blocking hydrogen. Double sealing is achieved through the hydrogen storage capsule 7 and the wellbore body, and the sealing performance is good, which can effectively prevent the occurrence of hydrogen leakage.

[0131] Furthermore, in the present invention, the hydrogen storage well structure is reinforced by the enlarged portion 822 of the fixed anchor 82. The enlarged head anchoring section is provided at the bottom of the enlarged portion 822 of the fixed anchor 82. The rotating blade 8221 of the enlarged anchoring section is rotated by the rotating shaft 8222 under the traction of the connecting rod 8223, forming a tubular structure similar to a diamond, which increases the contact area between the enlarged head anchoring section and the concrete. When the fixed plate is subjected to an upward impact force, in addition to the side friction of the anchor rod 821 playing an anti-pullout role, the resistance of the enlarged head anchoring section also plays an anti-pullout role, which greatly improves the stability of the fixed plate and effectively prevents the hydrogen storage well from bursting out during the cycle of hydrogen injection and extraction.

[0132] Furthermore, the hydrogen storage capsule 7 in the present invention is made of flexible material and is in a contracted state under non-hydrogen filling conditions. During the hydrogen filling process, the hydrogen storage capsule 7 gradually expands and fits tightly against the inner wall of the hydrogen storage wellbore. The hydrogen storage wellbore and the hydrogen storage capsule 7 are synergistically stressed to prevent the hydrogen storage capsule 7 from being damaged by excessive stress. At the same time, the sealing device can be unscrewed to replace the hydrogen storage capsule 7 to avoid sealing failure caused by aging or damage of the hydrogen storage capsule 7 under multiple hydrogen charging and discharging cycles.

[0133] Furthermore, the hydrogen storage well positioning device in the present invention can be used to assist in the sinking of the hydrogen storage well. It can adjust the axis deviation angle and axis deviation of the hydrogen storage well hole 1 to perform center positioning, greatly improving the lowering accuracy and verticality of the hydrogen storage well, avoiding torsional tilting, bending deformation and other problems in the hydrogen storage well shaft 5 during the lowering of the hydrogen storage well, and improving the overall reliability of the structure.

[0134] Through the above structure, system and method, the device can solve the technical problem in the prior art that the hydrogen storage wellbore cannot be lowered stably and centrally when being placed into the wellbore of the hydrogen storage well, resulting in unqualified cementing quality of the hydrogen storage well structure.

[0135] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A hydrogen storage well positioning device, connected to a hydrogen storage well, wherein the hydrogen storage well is provided with a hydrogen storage well hole, characterized in that: The hydrogen storage well positioning device comprises: The mounting body is connected to the wellbore of the hydrogen storage well and has a pouring hole relative to the wellbore of the hydrogen storage well; A clamping assembly, comprising at least two clamping members, wherein the at least two clamping members are relatively arranged on both sides of the pouring hole and are both slidably connected to the mounting body, and the two clamping members can slide towards or away from each other to clamp or release the wellbore of the hydrogen storage well; and A lifting assembly, connected to the wellbore of the hydrogen storage well and the mounting body, used to drive the wellbore of the hydrogen storage well to slide close to or away from the wellbore of the hydrogen storage well, and to be inserted into the wellbore of the hydrogen storage well; Wherein, the installation body includes a lifting platform, a mounting platform and a guide member, the lifting platform is arranged above the wellbore of the hydrogen storage well, and can slide close to or away from the wellbore of the hydrogen storage well, and the lifting platform is formed with the casting hole relative to the wellbore of the hydrogen storage well, the mounting platform is spaced apart from the lifting platform and connected to the lifting platform, the mounting platform is provided with a clamping hole relative to the casting hole, at least two clamping members are relatively arranged on both sides of the clamping hole, and are slidably connected to the mounting platform, one end of the guide member is connected to the lifting platform, and the other end is connected to the wellbore of the hydrogen storage well, and is communicated with the wellbore of the hydrogen storage well, and the length of the guide member can be extended or shortened; Wherein, the guide member includes a first material guide cylinder, a second material guide cylinder and at least one first locking portion, the first material guide cylinder is coaxially arranged with the wellbore of the hydrogen storage well and connected to the wellbore of the hydrogen storage well, one end of the second material guide cylinder is slidably sleeved on the first material guide cylinder, and the other end is connected to the casting hole, the first locking portion is connected to the second material guide cylinder, and is detachably connected to the first material guide cylinder, and is used to limit the second material guide cylinder from sliding relative to the first material guide cylinder; Wherein, the number of the clamping members in the clamping assembly is four, and the clamping members include a guide block, a clamping block and a second locking portion, the guide block is arranged along the radial direction of the clamping hole, and the four guide blocks are arranged at intervals along the circumferential direction of the clamping hole, the clamping block is slidably connected to the guide block along the setting direction of the guide block, and the second locking portion is connected to the clamping block and detachably connected to the guide block, and is used to limit the sliding of the clamping block relative to the guide block; Among them, the guide block is provided with a first sliding groove along its setting direction, the clamping block has a connecting end and an arc-shaped clamping end, the connecting end of the clamping block is formed with a sliding groove relative to the guide block, the connecting end of the clamping block is slidably sleeved on the guide block through the sliding groove, and the connecting end of the clamping block is provided with a second sliding groove relative to the first sliding groove, the second sliding groove is connected with the sliding groove, the second locking portion passes through the second sliding groove and is detachably arranged on the first sliding groove, and the arc-shaped clamping end of the clamping block is arranged relative to the hydrogen storage well shaft, and can abut against the outer wall of the hydrogen storage well shaft.

2. The hydrogen storage well positioning device according to claim 1, characterized in that: The lifting assembly includes four support seats, four sliding rods and four driving members. The four support seats are evenly distributed at four right angles of the lifting platform. The support seats are provided with lifting holes relative to the lifting platform. The sliding rods are arranged in a one-to-one correspondence with the support seats. One end of the sliding rod is connected to the lifting platform, and the other end is slidably inserted in the lifting hole. The driving member is arranged in a one-to-one correspondence with the sliding rod, and the driving member is connected to the support seat and the sliding rod, so as to drive the sliding rod to slide relative to the support seat.

3. The hydrogen storage well positioning device according to claim 2, characterized in that: The side wall of the support seat is also provided with an adjusting groove, and the adjusting groove is communicated with the lifting hole. The driving member includes a first rack, a second rack, an adjusting gear and an adjusting wheel. The first rack is arranged along the axial direction of the lifting hole and is connected to the inner wall of the lifting hole. The second rack is arranged along the axial direction of the sliding rod and is connected to the sliding rod. The adjusting gear is rotatably built into the lifting hole and meshes with the first rack and the second rack. The adjusting gear is provided with a through hole relative to the adjusting groove. One end of the adjusting wheel passes through the adjusting groove and the through hole in sequence and is rotatably connected to the inner wall of the lifting hole. The adjusting gear is fixedly sleeved on one end of the adjusting wheel through the through hole, and the other end of the adjusting wheel is externally placed on the support seat.

4. A hydrogen storage well system, characterized in that: include: A hydrogen storage well structure and a hydrogen storage well positioning device as claimed in claim 3, wherein the hydrogen storage well structure comprises a hydrogen storage well hole, a hydrogen storage well shaft, a cement ring, a hydrogen storage capsule, an anchor assembly and a sealing assembly, wherein the hydrogen storage well shaft is inserted into the hydrogen storage well hole, the cement ring is arranged between the inner wall of the hydrogen storage well hole and the outer wall of the hydrogen storage well shaft, the hydrogen storage capsule is built into the hydrogen storage well shaft, the anchor assembly comprises a fixing plate and a plurality of fixing anchors, the fixing plate is fixedly sleeved on the hydrogen storage well shaft, a plurality of the fixing anchors are connected to the fixing plate, and are used to connect the fixing plate and the hydrogen storage well shaft to the hydrogen storage well, the sealing assembly comprises a sealing member and a hydrogen charging and discharging pipeline, the sealing member is sealingly arranged on the top of the hydrogen storage well shaft, and the hydrogen charging and discharging pipeline is communicated with the interior of the hydrogen storage well shaft.

5. The hydrogen storage well system according to claim 4, characterized in that: The fixing anchor includes an anchor rod and an expansion part. One end of the anchor rod is detachably connected to the fixing plate. The expansion part is connected to the other end of the anchor rod and inserted into the soil outside the circumference of the hydrogen storage wellbore. The volume of the expansion part can be expanded or reduced along its circumferential direction.

6. A method for constructing a hydrogen storage well, characterized in that: Using the hydrogen storage well system as claimed in claim 4, the specific steps of the hydrogen storage well construction method are as follows: Make the hydrogen storage wellbore, complete the production and processing of the hydrogen storage wellbore according to the design drawings, and then conduct ultrasonic testing and hydrogen permeation test; The hydrogen storage well positioning device is moved to the position of the hydrogen storage well hole, and the lifting and leveling of the clamping assembly are realized by the lifting assembly, and then the guide member is extended into the hydrogen storage well hole, and the hydrogen storage well shaft is placed in the clamping hole, and the hydrogen storage well shaft is limited by the clamping block, and the hydrogen storage well shaft is assisted to be sunk into the hydrogen storage well hole, and then cement is poured between the hydrogen storage well hole and the hydrogen storage well shaft through the pouring hole to form a cement ring, and finally the hydrogen storage capsule is lowered and the sealing assembly is installed to fix the hydrogen storage capsule; Level the site, locate the construction axis of the anchor, use a drill to construct the anchor pile hole, then lower the anchor into the pile hole, pour concrete and maintain the shape; Level the site, locate the construction axis of the fixed plate, make and process the fixed plate template according to the actual drawing, tie the fixed plate steel bars, pour concrete and sprinkle water for maintenance. After the concrete reaches the designed strength, tension and fix the fixed anchor, and finally use micro-expansion concrete to fill and smooth the anchor groove.

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