Basalt composite horizontal medium-pressure gas storage tank

Abstract

The application discloses a horizontal medium-pressure gas storage tank made of full basalt composite material and relates to the technical field of medium-pressure gas storage tanks. The surface lower end of the gas storage tank body is fixed with trapezoidal plates on the left side and the right side; the side surface of the trapezoidal plate is provided with a groove; an antiskid plate is fixed in the groove; the inner wall of the gas storage tank body is coated with a nano-modified basalt sealing coating; reinforcing strips are fixed in the gas storage tank body in a uniform distribution; reinforcing rings are fixed at the left end and the right end of all the reinforcing strips. The application can solve the technical problems that the traditional steel inner tank gas storage tank is prone to corrosion, fatigue cracking, interlayer delamination and debonding, is inconvenient to install and level, has poor sealing reliability and has a service life difficult to meet the long-term alternating load use requirement.

Description

Technical Field

[0001] This invention relates to the field of medium-pressure gas storage tank technology, specifically a horizontal medium-pressure gas storage tank made entirely of basalt composite material. Background Technology

[0002] In the construction of new power systems, medium-pressure supplemental compressed air energy storage has become an important technological direction for large-capacity, long-life, and low-cost energy storage, especially suitable for the flexible retrofitting of thermal power units and the integration of new energy sources. This type of energy storage system places specific requirements on the gas storage equipment: operating pressure of 5–8 MPa, single tank volume of 300 cubic meters, total gas storage capacity of hundreds of thousands of cubic meters, semi-buried installation, ability to withstand alternating loads of two charging and two discharging cycles per day, a service life of 30–40 years, and adaptability to harsh environments such as saline-alkali soils, extreme cold, and large temperature differences. Currently, the industry commonly uses composite gas storage tanks with a steel inner liner and external fiber winding. The steel inner liner achieves sealing and pressure bearing, while the external fibers provide structural reinforcement. However, this type of structure has significant technical shortcomings in long-term use.

[0003] Currently, the industry commonly uses a composite gas storage tank structure with a steel inner liner and basalt fiber winding. Typical existing technologies are as follows:

[0004] CN103603949A discloses a pressure vessel with a metal liner and basalt fiber winding.

[0005] CN109838682B discloses a 35MPa CNG gas cylinder with an aluminum alloy inner liner and basalt fiber fully wrapped.

[0006] The aforementioned traditional solutions, which use steel / metal inner liner as the core, have significant drawbacks in large-scale compressed air energy storage scenarios:

[0007] 1) Prone to corrosion and short lifespan

[0008] Metal liners are prone to electrochemical corrosion and hydrogen embrittlement in saline-alkali and semi-buried environments. They are also prone to metal fatigue cracks under high-frequency alternating loads, which cannot meet the design requirements for a long service life of 30 to 40 years. This results in high maintenance costs and significant safety hazards in the later stages.

[0009] 2) The layers are prone to delamination and detachment.

[0010] The large difference in thermal expansion coefficients between steel and basalt fiber leads to stress concentration at the interface under extreme temperature conditions, making it prone to structural failures such as debonding, delamination, and microcracks, resulting in poor long-term operational reliability.

[0011] 3) Poor compatibility and inconvenient installation

[0012] Existing technologies are mostly for small-volume, high-pressure, ground-mounted vehicle gas cylinders, which cannot meet the requirements of 300m³ large-volume, medium-pressure, semi-buried horizontal installation. Leveling the tank is difficult, and there is a lack of non-metallic leveling and locking structures suitable for all-composite material tanks.

[0013] 4) Low reliability of seals and joints

[0014] Metal joints are prone to corrosion and stress concentration, and the sealing structure relies on a metal inner liner. Under the engineering requirements of steel-free, long-life, and high-reliability systems, they are prone to failure, which restricts the stable operation of large-scale energy storage systems.

[0015] Therefore, we propose a horizontal medium-pressure gas storage tank made entirely of basalt composite material. Summary of the Invention

[0016] The technical problem to be solved by the present invention is to overcome the existing defects and provide a horizontal medium-pressure gas storage tank made of all basalt composite material. This invention can solve the technical problems of traditional steel-lined gas storage tanks, such as easy corrosion, easy fatigue cracking, easy delamination and debonding between layers, inconvenience of leveling during semi-buried installation, poor sealing reliability, and difficulty in meeting the long-term alternating load requirements. It can effectively solve the problems in the background technology.

[0017] To achieve the above objectives, the present invention provides the following technical solution: a horizontal medium-pressure gas storage tank made entirely of basalt composite material, comprising a gas storage tank body, wherein the gas storage tank body is an integrated winding structure of all steel-free, all basalt fiber composite material; trapezoidal plates are fixed on both the left and right sides of the lower end of the surface of the gas storage tank body, and grooves are formed on the sides of the trapezoidal plates, with anti-slip plates fixed inside the grooves; the inner wall of the gas storage tank body is coated with a nano-modified basalt sealing coating; uniformly distributed reinforcing strips are fixed inside the gas storage tank body, and reinforcing rings are fixed at both ends of all the reinforcing strips; gas guiding components are installed inside the openings at both ends of the gas storage tank body; a first leveling component is installed at the lower end of the surface of the trapezoidal plate; a support component is installed on the lower side of the first leveling component; a second leveling component is installed on the front and rear sides of the support component; connecting components are installed on both the front and rear sides of the first leveling component; and a clip is installed at the lower end of the interior of the first leveling component. The system includes a connecting component and a pulling component. The snap-fit ​​component is connected to two corresponding connecting components, and the pulling component is connected to the snap-fit ​​component. A fastening component is installed on the upper side of the first leveling component. The gas guiding component, the first leveling component, the second leveling component, and the support component are all made of the same material as the gas tank body. By using an integrated winding molding of the gas tank body made of all-basalt fiber composite material, an internal reinforcement structure, and a nano-sealing coating, the tank body can achieve lightweight, high strength, and excellent corrosion resistance. The gas tank body is a horizontal cylindrical structure with an inner diameter of 5m, a single tank volume of 300m³, a cylinder wall thickness of 55-60mm, and a two-end end cap wall thickness of 60-65mm. It is integrally molded using circumferential winding, spiral winding, and end cap variable angle winding. The fiber volume content is 60%-65%. The entire structure is seamless, without splicing, and without metal inserts. The inner wall of the tank is coated with a nano-modified basalt sealing coating with a thickness of 0.8-1.2mm, achieving high-pressure gas sealing under conditions without a steel inner liner. The temperature resistance range is... With a temperature range of 40℃ to 60℃, the gas storage tank is resistant to aging and permeability. The tank body is equipped with circumferentially evenly distributed reinforcing strips and end reinforcing rings to resist the alternating stress and creep deformation caused by two daily filling and discharging cycles, ensuring structural stability for 30–40 years of long-term operation.

[0018] Furthermore, the first leveling component includes a fixed frame, inclined moving blocks, and a bidirectional screw. The fixed frame is provided at the lower end of the trapezoidal plate surface. Two corresponding inclined moving blocks are slidably connected inside the fixed frame. The inclined surfaces of the two inclined moving blocks are respectively in contact with the front and rear sides of the trapezoidal plate. The lower side of the inclined moving blocks is provided with a first threaded hole. The two first threaded holes have opposite threads. The internal threads of the two first threaded holes are connected to a bidirectional screw. The bidirectional screw is welded from two threaded rods with opposite threads. Rotating holes are provided on both the front and rear sides of the fixed frame. The front and rear ends of the bidirectional screw are respectively rotatably connected to the inside of the two rotating holes. By rotating a bidirectional screw, the two inclined moving blocks can be synchronously driven to slide towards or away from each other within the fixed frame. Utilizing the contact between their inclined surfaces and the trapezoidal plate, the trapezoidal blocks move upward, achieving preliminary leveling of the gas storage tank body. The first leveling component is a coarse adjustment mechanism for the tank body. By driving the inclined moving blocks to move towards each other through the bidirectional screw, the trapezoidal plate is pushed up and down, achieving rapid coarse adjustment of the left and right height of the tank body.

[0019] Furthermore, the connecting assembly includes a connecting plate and connecting slots. The connecting plates are fixed at both ends of the bidirectional screw. The connecting plates are provided with evenly distributed connecting slots on their circumferential surfaces. The connecting plates and connecting slots at the ends of the bidirectional screw provide reliable engagement points for the locking assembly, thereby locking the bidirectional screw after leveling and preventing it from rotating due to vibration or other reasons.

[0020] Furthermore, the locking assembly includes a strip-shaped opening, a fixing block, a slider, a locking plate, a first spring, and a pull rope. The lower end of the fixing frame has a strip-shaped opening, inside which two corresponding fixing blocks are fixed. Sliding blocks are slidably connected to both the front and rear ends of the strip-shaped opening. A locking plate is fixed to the side of the slider, engaging with the corresponding connecting slot. A first spring is fixed to the side of the slider, with its other end fixed to the side of the corresponding fixing block. A sliding hole is formed in the middle of the fixing block, inside which a pull rope is slidably connected. The pull rope is fixed to the side of the corresponding slider. Pushing the slider and locking plate with the first spring allows the locking plate to automatically engage with the connecting slot of the connecting disc, achieving automatic locking of the bidirectional screw. Pulling the pull rope overcomes the force of the first spring, causing the locking plate to disengage from the slot, thereby unlocking the bidirectional screw for leveling operations.

[0021] Furthermore, the pulling assembly includes a rotating shaft, a turntable, and a first actuating disc. A connecting hole is provided on the lower side of the fixed frame. The left and right ends of the connecting hole are rotatably connected to the rotating shaft. A turntable is fixed between the two rotating shafts. Two pull ropes corresponding to the turntable are fixed on the circumferential surface of the turntable. A first actuating disc is fixed on the end face of the left and right rotating shafts. By rotating the first actuating disc, the turntable is rotated, which can simultaneously wind up the two pull ropes, thereby linking and controlling the unlocking action of the two locking components. This allows the locking and releasing of the bidirectional screw to be completed by a single point operation from below the tank.

[0022] Furthermore, the fastening assembly includes a first threaded post, a second actuating disc, and a first anti-slip disc. A second threaded hole is provided on the upper side of the fixing frame. The first threaded post is threadedly connected to the inside of the second threaded hole. The second actuating disc is fixed to the end face of the first threaded post outside the second threaded hole. The first anti-slip disc is fixed to the other end of the first threaded post. The first anti-slip disc fits against the side of the anti-slip plate. By rotating the second actuating disc, the first threaded post is driven to rotate downwards, which can make the first anti-slip disc tightly press against the anti-slip plate on the side of the trapezoidal plate, thereby providing clamping force and enhancing the connection stability between the tank and the support frame.

[0023] Furthermore, the support assembly includes a support plate, a connecting plate, and a bubble level. The support plate is fixed to the lower side of the fixed frame, and a groove is provided on the upper side of the support plate. The connecting plate is fixed inside the two grooves, and the bubble level is installed on the side of the support plate. Through the support plate and the connecting plate, a stable bottom support base can be provided for the entire storage tank. The bubble level installed on the side of the support plate can intuitively indicate the level status of the tank, providing a visual reference for leveling operations.

[0024] Furthermore, the second leveling component includes a second threaded post, a fastening plate, and a third actuating plate. The support plate has third threaded holes on both its front and rear edges. The second threaded post is internally threaded into each of these third threaded holes. A third actuating plate is fixed to the upper end of the second threaded post, and a fastening plate is fixed to the lower end of the second threaded post. The fastening plate has evenly distributed fastening holes on its edge. By rotating the two third actuating plates, the extension height of the two second threaded posts and the fastening plate can be independently adjusted, thereby fine-tuning the front-to-back tilt of the support plate. Combined with the indication from the bubble level, final precise leveling is achieved. The second leveling component is a tank fine-tuning mechanism. Through the independent lifting and lowering of the two sets of second threaded posts, and in conjunction with the bubble level, precise calibration of the front-to-back tilt angle is achieved, meeting the requirements for rapid and accurate leveling in semi-buried installations.

[0025] Furthermore, a second anti-slip disc is fixed to the lower end of the fastening disc, and a support ring and a second spring are sleeved on the surface of the second threaded post. The upper end of the second spring is fixed to the lower end of the support ring, and the lower end of the second spring is fixed to the upper side of the support plate. The upper end of the support ring is in contact with the lower end of the third dial. The second anti-slip disc increases the friction between the fastening disc and the ground, preventing slippage after leveling. The cooperation of the second spring and the support ring provides buffering and maintains a certain preload when rotating the third dial, making the height adjustment operation smoother and helping to offset some vibrations.

[0026] Furthermore, the gas guiding assembly includes a connecting pipe, a gas guiding pipe, a rubber ring, a sealing cover, a retaining ring, and a connecting flange ring. Connecting pipes are fixed inside the openings at both ends of the gas storage tank body. A gas guiding pipe is slidably connected inside the connecting pipe. A rubber ring is fixed to the circumferential surface of the gas guiding pipe. An annular sealing groove is formed inside the connecting pipe, and the rubber ring is snapped into the corresponding annular sealing groove. A sealing cover is fixed to the circumferential surface of the gas guiding pipe, and the sealing cover is threaded onto the surface of the connecting pipe. A retaining ring is fixed to the left end inside the sealing cover. The left end of the connecting pipe is provided with an annular limiting groove, and the retaining ring is engaged inside the corresponding annular limiting groove. A connecting flange ring is fixed on the surface of the air guide pipe. Through the sliding fit between the air guide pipe and the connecting pipe and the engagement of the rubber ring with the annular sealing groove, a certain axial displacement of the pipeline can be allowed under the premise of ensuring sealing, to compensate for thermal expansion and contraction or installation stress. By tightening the sealing cover so that the retaining ring inside it is engaged in the annular limiting groove of the connecting pipe, the air guide pipe can be axially locked to prevent it from falling out. Through the connecting flange ring, it can be easily connected to the external gas supply or user pipeline.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: This horizontal medium-pressure gas storage tank made of all basalt composite material has the following advantages:

[0028] 1. By adopting an integrated winding molding structure of all steel-free basalt fiber composite material and coordinating the reinforcement of internal reinforcing strips and reinforcing rings, corrosion, fatigue cracking and interface delamination defects caused by metal materials can be completely eliminated, significantly improving the structural stability and long-term operational reliability of the tank and extending the service life of the tank.

[0029] 2. By setting up a multi-level leveling and locking mechanism consisting of a first leveling component, a second leveling component, a snap-fit ​​component, and a pulling component, it is possible to achieve rapid and accurate leveling and stable locking of the semi-buried horizontal tank, simplify the on-site construction process, avoid stress concentration caused by the tank tilting during installation, and ensure the uniformity of the tank's stress.

[0030] 3. By using all-non-metallic gas guiding components made of the same material as the tank body and a nano-modified basalt sealing coating on the inner wall, long-term sealing of high-pressure gas can be achieved without a metal inner liner, eliminating the risk of metal joint corrosion and sealing failure, and improving the sealing reliability and adaptability of the tank body to harsh environments. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 This is a front sectional view of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of section B in the middle;

[0035] Figure 5 This is a schematic diagram of the snap-fit ​​assembly structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the connection component structure of the present invention.

[0037] In the diagram: 1. Gas tank body; 2. Gas guiding assembly; 21. Connecting pipe; 22. Gas guiding pipe; 23. Rubber ring; 24. Sealing cover; 25. Snap ring; 26. Connecting flange ring; 3. First leveling assembly; 31. Fixed frame; 32. Inclined moving block; 33. Bidirectional screw; 4. Snap-fit ​​assembly; 41. Strip opening; 42. Fixed block; 43. Slider; 44. Clamping plate; 45. First spring; 46. Pull rope; 5. Pulling assembly; 51. Rotating shaft; 52. Turntable; 53. First actuating plate; 6. Fastening assembly; 61. 62 First threaded post, 63 Second actuating disc, 7 First anti-slip disc, 7 Connecting assembly, 74 Connecting disc, 75 Connecting slot, 8 Support assembly, 86 Support plate, 87 Connecting plate, 88 Bubble level, 9 Second leveling assembly, 97 Second threaded post, 98 Fastening disc, 99 Third actuating disc, 10 Support ring, 11 Second spring, 12 Second anti-slip disc, 13 Trapezoidal plate, 14 Anti-slip plate, 15 Nano-modified basalt sealing coating, 16 Reinforcing strip, 17 Reinforcing ring. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-6This embodiment provides a technical solution: a horizontal medium-pressure gas storage tank made entirely of basalt composite material, including a gas storage tank body 1. The gas storage tank body 1 is an integrated winding structure made entirely of steel-free basalt fiber composite material. Trapezoidal plates 13 are fixed on both the left and right sides of the lower end of the surface of the gas storage tank body 1. Grooves are provided on the sides of the trapezoidal plates 13, and anti-slip plates 14 are fixed inside the grooves. The inner wall of the gas storage tank body 1 is coated with a nano-modified basalt sealing coating 15. Reinforcing strips 16 are evenly distributed inside the gas storage tank body 1. Reinforcing rings 17 are fixed at both ends of all the reinforcing strips 16. Gas guiding components 2 are installed inside the openings at both ends of the gas storage tank body 1. A first leveling component 3 is installed at the lower end of the surface of the trapezoidal plates 13. A support component 8 is installed on the lower side of the leveling component 3. A second leveling component 9 is installed on the front and rear sides of the support component 8. A connecting component 7 is installed on both the front and rear sides of the first leveling component 3. A snap-fit ​​component 4 and a pull component 5 are installed at the lower end inside the first leveling component 3. The snap-fit ​​component 4 is connected to the two corresponding connecting components 7. The pull component 5 is connected to the snap-fit ​​component 4. A fastening component 6 is installed on the upper side of the first leveling component 3. The air guiding component 2, the first leveling component 3, the second leveling component 9, and the support component 8 are all made of the same material as the gas storage tank body 1. By adopting the gas storage tank body 1, which is integrally wound with all basalt fiber composite material, the internal reinforcement structure, and the nano-sealing coating 15, the tank body can achieve lightweight, high strength, and excellent corrosion resistance.

[0040] The first leveling component 3 includes a fixed frame 31, inclined moving blocks 32, and a bidirectional screw 33. The fixed frame 31 is provided at the lower end of the surface of the trapezoidal plate 13. Two corresponding inclined moving blocks 32 are slidably connected inside the fixed frame 31. The inclined surfaces of the two inclined moving blocks 32 are respectively attached to the front and rear sides of the trapezoidal plate 13. The lower side of the inclined moving blocks 32 is provided with a first threaded hole. The two first threaded holes have opposite threads. The two first threaded holes are connected to the internal threads of the two first threaded holes with a bidirectional screw 33. The bidirectional screw 33 is welded from two threaded rods with opposite threads. Rotating holes are provided on both the front and rear sides of the fixed frame 31. The front and rear ends of the bidirectional screw 33 are respectively rotatably connected to the inside of the two rotating holes. By rotating a bidirectional screw 33, the two inclined moving blocks 32 can be synchronously driven to slide towards or away from each other in the fixed frame 31. By utilizing the contact between its inclined surface and the trapezoidal plate 13, the trapezoidal block 31 moves upward, thereby achieving the initial leveling of the gas storage tank body 1.

[0041] The connecting component 7 includes a connecting plate 71 and a connecting slot 72. The connecting plate 71 is fixed at both the front and rear ends of the bidirectional screw 33. The connecting slots 72 are evenly distributed on the circumferential surface of the connecting plate 71. The connecting plate 71 and the connecting slots 72 at the ends of the bidirectional screw 33 can provide a reliable engagement point for the locking component 4, thereby locking the bidirectional screw 33 after leveling and preventing it from rotating due to vibration or other reasons.

[0042] The snap-fit ​​assembly 4 includes a slot 41, a fixing block 42, a slider 43, a locking plate 44, a first spring 45, and a pull rope 46. The lower end of the fixed frame 31 has a slot 41. Two corresponding fixing blocks 42 are fixed inside the slot 41. Sliding blocks 43 are slidably connected to both the front and rear ends of the slot 41. Locking plates 44 are fixed to the sides of the sliders 43, snapping into the corresponding connecting slots 72. A first spring 45 is fixed to the side of the slider 43, and the other end of the first spring 45 is fixed... The corresponding fixing block 42 is fixed on the side. The fixing block 42 has a sliding hole in the middle. A pull rope 46 is slidably connected inside the sliding hole. The pull rope 46 is fixed on the side of the corresponding slider 43. The slider 43 and the locking plate 44 are pushed by the first spring 45, which can make the locking plate 44 automatically lock into the connecting slot 72 of the connecting plate 71, thereby realizing the automatic locking of the bidirectional screw 33. By pulling the pull rope 46, the force of the first spring 45 can be overcome to make the locking plate 44 disengage from the slot, thereby unlocking the bidirectional screw 33 for leveling operation.

[0043] The pulling assembly 5 includes a rotating shaft 51, a turntable 52, and a first actuating disc 53. A connecting hole is provided on the lower side of the fixed frame 31. The left and right ends of the connecting hole are rotatably connected to the rotating shaft 51. The turntable 52 is fixed between the two rotating shafts 51. Two pull ropes 46 corresponding to the turntable 52 are fixed on the circumferential surface of the turntable 52. The first actuating disc 53 is fixed on the end face of the left and right rotating shafts 51. By rotating the first actuating disc 53, the turntable 52 is rotated, which can simultaneously wind up the two pull ropes 46, thereby linking and controlling the unlocking action of the two locking assemblies 4, so that the locking and releasing of the bidirectional screw 33 can be completed by a single point operation from the bottom of the tank.

[0044] The fastening assembly 6 includes a first threaded post 61, a second actuating disc 62, and a first anti-slip disc 63. A second threaded hole is provided on the upper side of the fixing frame 31. The first threaded post 61 is threadedly connected to the inside of the second threaded hole. The second actuating disc 62 is fixed on the end face of the first threaded post 61 located outside the second threaded hole. The first anti-slip disc 63 is fixed on the other end of the first threaded post 61. The first anti-slip disc 63 fits against the side of the anti-slip plate 14. By rotating the second actuating disc 62, the first threaded post 61 is driven to rotate downward, so that the first anti-slip disc 63 can be tightly pressed against the anti-slip plate 14 on the side of the trapezoidal plate 13, thereby providing clamping force and enhancing the connection stability between the tank and the support frame.

[0045] The support assembly 8 includes a support plate 81, a connecting plate 82, and a bubble level 83. The support plate 81 is fixed to the lower side of the fixed frame 31, and the upper side of the support plate 81 is provided with grooves. The connecting plate 82 is fixed inside the two grooves. The bubble level 83 is installed on the side of the support plate 81. The support plate 81 and the connecting plate 82 can provide a stable bottom support base for the entire storage tank. The bubble level 83 installed on the side of the support plate 81 can intuitively indicate the level status of the tank and provide a visual reference for leveling operations.

[0046] The second leveling component 9 includes a second threaded post 91, a fastening plate 92, and a third actuating plate 93. The front and rear edges of the support plate 81 are provided with third threaded holes. The second threaded post 91 is threadedly connected to the inside of the third threaded hole. The upper end of the second threaded post 91 is fixed with the third actuating plate 93, and the lower end of the second threaded post 91 is fixed with the fastening plate 92. The edge of the fastening plate 92 is provided with evenly distributed fastening holes. By rotating the front and rear third actuating plates 93 respectively, the extension height of the two second threaded posts 91 and the fastening plate 92 can be adjusted independently, thereby fine-tuning the front and rear tilt of the support plate 81. Combined with the indication of the bubble level 83, the final precise level calibration can be achieved.

[0047] The gas guiding assembly 2 includes a connecting pipe 21, a gas guiding pipe 22, a rubber ring 23, a sealing cover 24, a retaining ring 25, and a connecting flange ring 26. Connecting pipes 21 are fixed inside the openings at both ends of the gas storage tank body 1. The gas guiding pipe 22 is slidably connected inside the connecting pipe 21. A rubber ring 23 is fixed on the circumferential surface of the gas guiding pipe 22. An annular sealing groove is formed inside the connecting pipe 21, and the rubber ring 23 is snapped into the corresponding annular sealing groove. A sealing cover 24 is fixed on the circumferential surface of the gas guiding pipe 22 and is threaded onto the surface of the connecting pipe 21. A retaining ring 25 is fixed to the left end inside the sealing cover 24. An annular limiting groove is provided at the left end of pipe 21, and a retaining ring 25 is engaged inside the corresponding annular limiting groove. A connecting flange ring 26 is fixed on the surface of the air guide pipe 22. Through the sliding fit between the air guide pipe 22 and the connecting pipe 21 and the engagement of the rubber ring 23 with the annular sealing groove, a certain axial displacement of the pipeline can be allowed under the premise of ensuring sealing, to compensate for thermal expansion and contraction or installation stress. By tightening the sealing cover 24, the retaining ring 25 inside can be engaged into the annular limiting groove of the connecting pipe 21, which can lock the air guide pipe 22 axially and prevent it from falling out. The connecting flange ring 26 can be used to easily connect to the external gas supply or user pipeline.

[0048] Specifically: a second anti-slip disc 12 is fixed to the lower end of the fastening disc 92; a support ring 10 and a second spring 11 are sleeved on the surface of the second threaded post 91; the upper end of the second spring 11 is fixed to the lower end of the support ring 10; the lower end of the second spring 11 is fixed to the upper side of the support plate 81; the upper end of the support ring 10 is in contact with the lower end of the third dial 93; the second anti-slip disc 12 increases the friction between the fastening disc 92 and the ground, preventing slippage after leveling; the cooperation of the second spring 11 and the support ring 10 provides buffering and maintains a certain preload when rotating the third dial 93, making the height adjustment operation smoother and helping to offset some vibrations.

[0049] The working principle of the horizontal medium-pressure gas storage tank made of all basalt composite material provided by the present invention is as follows: During the semi-buried installation of the gas storage tank body 1, the operator rotates the first actuating disc 53 of the pulling assembly 5 to drive the rotating shaft 51 and the turntable 52 to rotate, causing the turntable 52 to wind up the pull rope 46. The pull rope 46 pulls the slider 43 and the locking plate 44 of the locking assembly 4 to move and compress the first spring 45, causing the locking plate 44 to disengage from the connecting slot 72 of the connecting assembly 7 to complete the unlocking of the bidirectional screw 33. Subsequently, rotating the bidirectional screw 33 drives the two oblique moving blocks 32 of the first leveling assembly 3 to move towards each other within the fixed frame 31. 2. The inclined plane pushes the trapezoidal plate 13 to drive the gas tank body 1 to complete the initial leveling in the height direction. After leveling, the first actuating disc 53 is released, and the first spring 45 pushes the slider 43 and the clamping plate 44 to reset and lock into the connecting slot 72, realizing the automatic locking of the bidirectional screw 33 to prevent loosening. Then, by rotating the second actuating disc 62 of the fastening component 6, the first threaded column 61 is driven to screw in, so that the first anti-slip disc 63 presses the anti-slip plate 14 on the side of the trapezoidal plate 13, further improving the connection stability between the gas tank body 1 and the support structure. At the same time, by observing the bubble level 83 of the support component 8, the third actuating disc of the second leveling component 9 is rotated respectively. The rotating disc 93 drives the second threaded post 91 to rotate, adjusting the extension height of the fastening disc 92 and the second anti-slip disc 12, thus completing the precise horizontal calibration of the gas storage tank body 1 in the front-to-back direction. The second spring 11 and the support ring 10 cooperate to provide buffer and pre-tightening force for the adjustment process, ensuring structural stability after leveling. The gas storage tank body 1 is integrally wound with all-steel-free basalt fiber composite material. The nano-modified basalt sealing coating 15 on the inner wall achieves high-pressure gas sealing. The internal reinforcing strips 16 and reinforcing rings 17 enhance the overall structural strength and resistance to alternating loads of the tank body. The gas guiding components 2 at both ends of the gas storage tank body 1 are connected to the connecting pipe 21 and the gas guiding pipe 2. 2. The cooperation of rubber ring 23, sealing cover 24, retaining ring 25 and connecting flange ring 26 ensures reliable connection with external pipelines while guaranteeing sealing performance, meeting the requirements for inflation, deflation, pressure monitoring and safe pressure relief. The first leveling component 3, the second leveling component 9, the support component 8, the snap-fit ​​component 4, the tension component 5, the connecting component 7, the fastening component 6 and the air guiding component 2 are all made of the same all-basalt composite material as the gas tank body 1. During use, there is no electrochemical corrosion or metal fatigue cracking problem. It can withstand alternating internal pressure and external loads for a long time and is suitable for semi-buried harsh environments and long-term use conditions.

[0050] Example 1

[0051] 1. Tank structure and parameter layout:

[0052] The gas storage tank body is a horizontal cylindrical shape with an inner diameter of 5m and a single tank volume of 300m³. The cylinder wall thickness is 55-60mm, and the end cap wall thickness is 60-65mm. It is formed by circumferential winding, spiral winding, and end cap variable angle winding in one piece, with a fiber volume content of 60%-65%. The inner wall nano-modified basalt sealing coating is 0.8-1.2mm thick, with a temperature resistance of -40℃ to 60℃, and is resistant to aging and gas permeation.

[0053] 2. Performance Comparison Data (Steel Inner Liner Option A vs. All Basalt Liner Option B)

[0054] sheet

[0055] Comparison Projects 15mm steel inner liner + basalt winding All-basalt composite materials Advantages Design pressure 35MPa 5-8MPa Matching medium-voltage energy storage scenarios, reducing costs and increasing efficiency. Gas storage capacity 70L 300m³ Large-scale production to meet energy storage needs Installation method ground Semi-buried (1.5m above ground) Utilizing soil constraints to reduce weight and materials Charge / discharge frequency none Charge and discharge twice daily Adapt to energy storage operation mode Design life Approximately 20 years 30-40 years Lifespan increased by more than 50% Environment adaptation none -40℃ extreme cold, sandstorms, saline-alkali land Applicable to all regions Safety factor 2.4 ≥2.5 Safer structure Explosive pressure — ≥21.5MPa Meets the requirements of the specifications weight 52 tons 18 tons 65% weight loss Cost per tank 1.25 million yuan 1.08 million yuan Cost reduction of 13.6% 35-year maintenance costs 700 million yuan 120 million yuan Operation and maintenance costs reduced by 82.9% Total cost over 35 years 4.175 billion yuan 2.42 billion yuan Total investment decreased by 42% Investment recovery period 11.2 years 9.4 years The recycling cycle has been shortened by 16%.

[0056] 3. Manufacturing process

[0057] The process involves impregnating basalt fibers with epoxy resin using a wet winding method, followed by winding to form the final product.

[0058] The circumferential winding angle is 90°, and the helical winding angle is ±54.7°.

[0059] Winding tension 50-80N, porosity ≤1.5%;

[0060] Stepped curing: Room temperature pre-curing ;

[0061] Curing degree ≥95%, interlaminar shear strength ≥38MPa.

[0062] 4. Performance Verification

[0063] Fatigue performance: Creep deformation <0.3% over 30 years at 8MPa. No damage was observed in the next cycle;

[0064] Low-temperature performance: Tensile strength increases by 52.4% at -40℃, with no risk of brittle fracture;

[0065] Corrosion resistance: Basalt is inorganic and inert, and its performance does not degrade in saline-alkali environments for 30 years;

[0066] Sealing performance: The nano-coating is leak-free and meets the requirements for long-term high-pressure gas sealing.

[0067] 5. Installation and Leveling Steps

[0068] Unlock: Turn the first dial to retract the rope and disengage the card from the connecting slot;

[0069] Coarse adjustment: Rotate the bidirectional screw to drive the inclined moving block, which pushes the trapezoidal plate up and down to complete the coarse height adjustment;

[0070] Locking: When the dial is released, the first spring causes the plate to automatically engage with the slot, preventing it from becoming loose;

[0071] Fine-tuning: Observe the bubble level and adjust the second threaded column to achieve precise calibration of the front and rear tilt angles;

[0072] Tighten: Tighten the first threaded post to press the anti-slip disc against the trapezoidal plate and enhance structural stability.

[0073] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A horizontal medium-pressure gas storage tank made entirely of basalt composite material, characterized in that: The system includes a gas storage tank body (1), which is an integrated winding structure made entirely of steel-free and basalt fiber composite material; trapezoidal plates (13) are fixed on both the left and right sides of the lower end of the surface of the gas storage tank body (1), and grooves are provided on the sides of the trapezoidal plates (13). Anti-slip plates (14) are fixed inside the grooves. The inner wall of the gas storage tank body (1) is coated with a nano-modified basalt sealing coating (15). Reinforcing strips (16) are fixed inside the gas storage tank body (1), and reinforcing rings (17) are fixed on both the left and right ends of all the reinforcing strips (16). Gas guiding components (2) are installed inside the openings set on both the left and right ends of the gas storage tank body (1). The lower end of the surface of the trapezoidal plate (13) A first leveling component (3) is installed, a support component (8) is installed on the lower side of the first leveling component (3), a second leveling component (9) is installed on the front and rear sides of the support component (8), a connecting component (7) is installed on both the front and rear sides of the first leveling component (3), a snap-fit ​​component (4) and a pull component (5) are installed at the lower end inside the first leveling component (3), the snap-fit ​​component (4) is connected to the two corresponding connecting components (7), the pull component (5) is connected to the snap-fit ​​component (4), a fastening component (6) is installed on the upper side of the first leveling component (3), and the air guiding component (2), the first leveling component (3), the second leveling component (9), and the support component (8) are all made of the same material as the gas storage tank body (1).

2. The horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 1, characterized in that: The first leveling component (3) includes a fixed frame (31), an inclined moving block (32), and a bidirectional screw (33). The lower end of the surface of the trapezoidal plate (13) is provided with a fixed frame (31). The fixed frame (31) is slidably connected to two corresponding inclined moving blocks (32). The inclined surfaces of the two inclined moving blocks (32) are respectively attached to the front and rear sides of the trapezoidal plate (13). The lower side of the inclined moving block (32) is provided with a first threaded hole. The two first threaded holes have opposite threads. The two first threaded holes are connected to the bidirectional screw (33) by internal threads. The bidirectional screw (33) is welded from two threaded rods with opposite threads. The fixed frame (31) is provided with rotating holes on both the front and rear sides. The front and rear ends of the bidirectional screw (33) are respectively rotatably connected to the inside of the two rotating holes.

3. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 2, characterized in that: The connecting assembly (7) includes a connecting plate (71) and a connecting slot (72). The connecting plate (71) is fixed at both the front and rear ends of the bidirectional screw (33). The connecting slots (72) are evenly distributed on the circumferential surface of the connecting plate (71).

4. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 3, characterized in that: The snap-fit ​​assembly (4) includes a strip opening (41), a fixing block (42), a slider (43), a locking plate (44), a first spring (45), and a pull rope (46). The lower end of the fixed frame (31) has a strip opening (41). Two corresponding fixing blocks (42) are fixed inside the strip opening (41). The front and rear ends of the strip opening (41) are slidably connected to sliders (43). The side of the slider (43) is fixed with a locking plate (44). The locking plate (44) is snapped into the inside of the corresponding connecting slot (72). The side of the slider (43) is fixed with a first spring (45). The other end of the first spring (45) is fixed to the side of the corresponding fixing block (42). The middle part of the fixing block (42) has a sliding hole. The inside of the sliding hole is slidably connected with a pull rope (46). The pull rope (46) is fixed to the side of the corresponding slider (43).

5. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 4, characterized in that: The pulling assembly (5) includes a rotating shaft (51), a turntable (52) and a first actuating disc (53). The lower side of the fixed frame (31) is provided with a connecting hole. The left and right ends of the connecting hole are rotatably connected to the rotating shaft (51). The turntable (52) is fixed between the two rotating shafts (51). Two pull ropes (46) corresponding to the turntable (52) are fixed on the circumferential surface of the turntable (52). The first actuating disc (53) is fixed on the end face of the left and right rotating shafts (51).

6. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 1, characterized in that: The fastening assembly (6) includes a first threaded post (61), a second actuating disc (62), and a first anti-slip disc (63). The upper side of the fixing frame (31) is provided with a second threaded hole. The first threaded post (61) is threadedly connected to the inside of the second threaded hole. The second actuating disc (62) is fixed on the end face of the first threaded post (61) located outside the second threaded hole. The first anti-slip disc (63) is fixed on the other end of the first threaded post (61). The first anti-slip disc (63) is in contact with the side of the anti-slip plate (14).

7. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 2, characterized in that: The support assembly (8) includes a support plate (81), a connecting plate (82) and a bubble level (83). The support plate (81) is fixed to the lower side of the fixed frame (31). The upper side of the support plate (81) is provided with a groove. The connecting plate (82) is fixed inside the two grooves. The bubble level (83) is installed on the side of the support plate (81).

8. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 1, characterized in that: The second leveling component (9) includes a second threaded post (91), a fastening plate (92) and a third actuating plate (93). The front and rear sides of the support plate (81) are provided with third threaded holes. The second threaded post (91) is threadedly connected to the inside of the third threaded hole. The third actuating plate (93) is fixed to the upper end of the second threaded post (91), and the fastening plate (92) is fixed to the lower end of the second threaded post (91). The fastening plate (92) has uniformly distributed fastening holes on its side.

9. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 8, characterized in that: The lower end of the fastening disc (92) is fixed with a second anti-slip disc (12). The surface of the second threaded post (91) is fitted with a support ring (10) and a second spring (11). The upper end of the second spring (11) is fixed to the lower end of the support ring (10), and the lower end of the second spring (11) is fixed to the upper side of the support plate (81). The upper end of the support ring (10) is in contact with the lower end of the third actuating disc (93).

10. A horizontal medium-pressure gas storage tank made entirely of basalt composite material according to claim 1, characterized in that: The gas guiding assembly (2) includes a connecting pipe (21), a gas guiding pipe (22), a rubber ring (23), a sealing cover (24), a retaining ring (25), and a connecting flange ring (26). The openings at both ends of the gas storage tank body (1) are fixed with connecting pipes (21). The gas guiding pipe (22) is slidably connected inside the connecting pipe (21). A rubber ring (23) is fixed on the circumferential surface of the gas guiding pipe (22). An annular sealing groove is opened inside the connecting pipe (21). The rubber ring (23) is snapped into the corresponding annular sealing groove. A sealing cover (24) is fixed on the circumferential surface of the gas guiding pipe (22). The sealing cover (24) is threaded to the surface of the connecting pipe (21). A retaining ring (25) is fixed at the left end inside the sealing cover (24). An annular limiting groove is opened at the left end of the connecting pipe (21). The retaining ring (25) is snapped into the corresponding annular limiting groove. A connecting flange ring (26) is fixed on the surface of the gas guiding pipe (22).

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