hydrogen storage tank

Abstract

The application relates to the technical field of storage tanks, in particular to a hydrogen storage tank, which comprises a tank body, the upper end of the tank body is provided with a slow-release assembly, the inside of the tank body is provided with a pressure-increasing assembly, the slow-release assembly and the pressure-increasing assembly are provided with a conveying assembly, the outside of the tank body is provided with a protection assembly, the slow-release assembly comprises a fixing ring which is embedded at the center of the outer wall of the upper end of the tank body, is connected with a one-way air inlet pipe and a one-way air outlet pipe through a cylinder and a conveying cavity respectively, and two control valves are opened, so that when the cylinder conveys hydrogen into the tank body, the conveying cavity can discharge the pressure-increasing gas in a pressure-increasing air bag, and when the conveying cavity injects the pressure-increasing gas into the pressure-increasing air bag, the cylinder can discharge the hydrogen in the tank body, so that the two kinds of gases cannot be simultaneously input into the tank body due to the operation error of an operator, and the situation that the tank body is damaged and leaks due to the overlarge internal pressure caused by the operation error can be avoided.

Description

Technical Field

[0001] This invention relates to the field of storage tank technology, specifically hydrogen storage tanks. Background Technology

[0002] Hydrogen storage tanks are devices used to store hydrogen and are widely used in all aspects of the hydrogen energy industry chain, including hydrogen production, storage, transportation, and use. With the development of hydrogen energy technology, the design and technology of hydrogen storage tanks are constantly improving to meet the needs of different application scenarios. Hydrogen is a flammable and explosive gas, therefore, the design and manufacture of hydrogen storage tanks must take safety into account. The tanks should have good sealing and pressure resistance to prevent hydrogen leakage and explosion.

[0003] Existing hydrogen storage tanks require pressurization components to assist in the complete discharge of hydrogen during filling and discharging. However, when filling and discharging two types of storage materials alternately, the flow rates of the two materials need to be controlled. Existing hydrogen storage tanks control the flow direction of the gas through control valves. If the control valve is used in the wrong direction during filling and discharging, the pressure inside the storage tank will surge, which can easily lead to damage and leakage. Furthermore, existing hydrogen storage tanks are all high-pressure tanks. When hydrogen is released, the excessive pressure inside the storage tank can easily impact the pipeline and cause pipeline leakage. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a hydrogen storage tank.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a hydrogen storage tank, including a tank body, a slow-release component is provided at the upper end of the tank body, a pressurization component is provided inside the tank body, a conveying component is provided on the slow-release component and the pressurization component, and a protection component is provided outside the tank body; The slow-release assembly includes a fixing ring, which is embedded in the center of the upper outer wall of the can. A cylinder is fixedly sleeved inside the fixing ring. A connecting pipe is fixedly connected to the outer wall of the cylinder. A rotating shaft is rotatably connected to the upper outer wall of the cylinder. A cylinder cover is fixedly connected to the lower end of the rotating shaft. An arc-shaped opening is opened on the outer wall of the cylinder cover. An arc-shaped notch is opened on the lower outer wall of the cylinder. A sealing ring is fixedly sleeved on the upper surface of the rotating shaft. The sealing ring is snapped onto the upper inner wall of the cylinder. A rotating rod is fixedly connected to the uppermost end of the rotating shaft. The pressurization assembly includes multiple connecting plates, which are symmetrically fixedly connected to the inner wall of the tank. The other end of each connecting plate is fixedly connected to the same airbag column. A pressurization airbag is fixedly connected to the inner wall of the airbag column. A delivery chamber is opened at the lower end of the airbag column. Multiple air holes are opened on the inner wall of the delivery chamber. An L-shaped tube is fixedly sleeved on the lower inner wall of the delivery chamber. The other end of the L-shaped tube extends through the outer wall of the tank to the outside. The conveying assembly includes two control valves, which are fixedly connected to a connecting pipe and an L-shaped pipe, respectively. Each control valve has a conveying pipe fixedly connected to its other end. A fixed seat is fixedly fitted onto the surface of the other end of the conveying pipe. A stabilizing shaft is rotatably connected to the center of the fixed seat. A rotating cover is fixedly connected to the upper end of the stabilizing shaft. A one-way air inlet pipe and a one-way air outlet pipe are embedded inside the rotating cover. A fixed block is fixedly connected to the outer wall of the fixed seat. Two clamping blocks are fixedly connected to the upper surface of the fixed block. Two side plates are symmetrically fixedly connected to the outer wall of the rotating cover. A single circular block is fixedly connected to each side plate. A rotating block is rotatably connected to the surface of the circular block and engages between the two clamping blocks.

[0006] The protective assembly includes two snap-fit ​​rings, which are respectively snapped onto the outer walls of the upper and lower ends of the tank. Fixed rods are equidistantly fixed to the outer walls of the snap-fit ​​rings. A protective cylinder is fixedly connected to the other end of the fixed rod located at the lower end of the tank, and a snap-fit ​​cylinder is fixedly connected to the other end of the fixed rod located at the upper end of the tank. The snap-fit ​​cylinder is snapped into the inside of the protective cylinder. A clamping groove is formed on the outer wall of the protective cylinder, and the clamping groove is snapped onto the surface of the L-shaped tube. Multiple arc-shaped grooves are formed on the upper surface of the snap-fit ​​cylinder. A first insertion hole is symmetrically formed on the outer wall of the snap-fit ​​cylinder, and a second insertion hole is symmetrically formed on the outer wall of the tank. The same L-shaped insert rod is inserted into the first and second insertion holes. Two L-shaped locking blocks are fixedly connected to the outer wall of the tank, and the L-shaped insert rod is snapped into the inside of the L-shaped locking blocks.

[0007] Specifically, the arc-shaped opening and the arc-shaped notch correspond to each other, and both the arc-shaped opening and the arc-shaped notch are arranged around the pivot.

[0008] Specifically, the cap is snapped onto the lower outer wall of the cylinder, and the upper surface of the cap matches the upper inner wall of the tank.

[0009] Specifically, the sealing ring is located at the upper end of the connecting pipe, and the upper surface of the sealing ring is pressed against the inner wall of the upper end of the cylinder.

[0010] Specifically, the one-way intake pipe and the one-way exhaust pipe correspond to the two delivery pipes, and the one-way intake pipe and the one-way exhaust pipe are tightly fitted to the two delivery pipes.

[0011] The beneficial effects of this invention are: (1) The hydrogen storage tank of the present invention is connected to a one-way inlet pipe and a one-way outlet pipe through a cylinder and a delivery chamber respectively. By opening the two control valves, it can be ensured that when the cylinder delivers hydrogen into the tank, the delivery chamber will discharge the pressurized gas in the pressurizing bladder. When the delivery chamber injects pressurized gas into the pressurizing bladder, the cylinder will discharge the hydrogen in the tank. This can prevent the two gases from being input into the tank at the same time due to operator error, and can prevent the tank from being damaged and leaked due to excessive internal pressure caused by operation error.

[0012] (2) The hydrogen storage tank of the present invention drives the rotating shaft to rotate by the rotating rod. When the rotating shaft rotates, it will drive the cylinder cover to rotate. When the cylinder cover rotates, it will drive the arc-shaped opening to correspond with the arc-shaped notch. By controlling the size of the overlap between the arc-shaped opening and the arc-shaped notch, the flow rate of hydrogen in the cylinder can be controlled. This can reduce the pressure of gas in the pipeline and prevent the pipeline from being damaged due to excessive pressure in the tank pushing the gas to squeeze the pipeline. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 A schematic diagram of the internal structure of the hydrogen storage tank provided by the present invention; Figure 2 This is a schematic diagram of the external structure of the hydrogen storage tank provided by the present invention; Figure 3 A schematic diagram of the protective cylinder structure of the hydrogen storage tank provided by the present invention; Figure 4 A schematic diagram of the pressurization bladder structure of the hydrogen storage tank provided by the present invention; Figure 5 A schematic diagram of the conveying assembly structure of the hydrogen storage tank provided by the present invention; Figure 6 A schematic diagram of the slow-release component structure of the hydrogen storage tank provided by the present invention; Figure 7 This is a schematic diagram of the rotating cover structure of the hydrogen storage tank provided by the present invention.

[0015] In the diagram: 1. Tank body; 2. Slow-release assembly; 21. Fixing ring; 22. Cylinder; 23. Connecting pipe; 24. Rotating shaft; 25. Cylinder cover; 26. Arc-shaped opening; 27. Arc-shaped notch; 28. Sealing ring; 29. ​​Rotating rod; 3. Pressurization assembly; 31. Connecting plate; 32. Airbag column; 33. Pressurization airbag; 34. Delivery chamber; 35. Air hole; 36. L-shaped pipe; 4. Delivery assembly; 41. Control valve; 42. Delivery pipe; 43. Solid... 44. Fixed seat; 45. Stabilizing shaft; 46. Rotating cover; 47. One-way air intake pipe; 48. One-way exhaust pipe; 49. Fixed block; 40. Clamping block; 410. Side plate; 411. Round block; 412. Rotating block; 5. Protective assembly; 51. Snap-fit ​​ring; 52. Fixed rod; 53. Protective cylinder; 54. Clamping groove; 55. Snap-fit ​​cylinder; 56. Arc-shaped groove; 57. First insertion hole; 58. Second insertion hole; 59. L-shaped insertion rod; 510. L-shaped clamping block. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0017] like Figures 1-7 As shown, the hydrogen storage tank of the present invention includes a tank body 1, a slow-release component 2 is provided at the upper end of the tank body 1, a pressurization component 3 is provided inside the tank body 1, a conveying component 4 is provided on the slow-release component 2 and the pressurization component 3, and a protection component 5 is provided on the outside of the tank body 1. The slow-release component 2 includes a retaining ring 21, which is embedded in the center of the upper outer wall of the tank 1. A cylinder 22 is fixedly sleeved inside the retaining ring 21. A connecting pipe 23 is fixedly connected to the outer wall of the cylinder 22. A rotating shaft 24 is rotatably connected to the upper outer wall of the cylinder 22. A cylinder cover 25 is fixedly connected to the lower end of the rotating shaft 24. An arc-shaped opening 26 is provided on the outer wall of the cylinder cover 25. An arc-shaped notch 27 is provided on the lower outer wall of the cylinder 22. The upper surface of the rotating shaft 24... A sealing ring 28 is fixedly fitted onto the upper inner wall of the cylinder 22. A rotating rod 29 is fixedly connected to the uppermost end of the rotating shaft 24. When hydrogen flows through the cylinder 22, the rotating rod 29 drives the rotating shaft 24 to rotate. When the rotating shaft 24 rotates, it drives the cylinder cover 25 to rotate. When the cylinder cover 25 rotates, it drives the arc-shaped opening 26 to correspond with the arc-shaped notch 27. By controlling the size of the overlap between the arc-shaped opening 26 and the arc-shaped notch 27, the flow rate of hydrogen in the cylinder 22 can be controlled. The pressurization assembly 3 includes multiple connecting plates 31, which are symmetrically fixedly connected to the inner wall of the tank 1. The other end of the connecting plates 31 is fixedly connected to the same airbag column 32. A pressurization airbag 33 is fixedly connected to the inner wall of the airbag column 32. A delivery chamber 34 is opened at the lower end of the airbag column 32. Multiple air holes 35 are opened on the inner wall of the delivery chamber 34. An L-shaped tube 36 is fixedly sleeved on the lower inner wall of the delivery chamber 34. The other end of the L-shaped tube 36 extends through the outer wall of the tank 1 to the outside. When gas is injected into the L-shaped tube 36, the gas is input into the delivery chamber 34 through the L-shaped tube 36, and then input into the pressurization airbag 33 through the air holes 35 in the delivery chamber 34. The gas expands the pressurization airbag 33, and the pressurization airbag 33 pushes the remaining hydrogen in the tank 1 to be discharged. The conveying assembly 4 includes two control valves 41, which are fixedly connected to the connecting pipe 23 and the L-shaped pipe 36, respectively. Each control valve 41 has a conveying pipe 42 fixedly connected to its other end. A fixed seat 43 is fixedly fitted onto the surface of the other end of the conveying pipe 42. A stabilizing shaft 44 is rotatably connected to the center of the fixed seat 43. A rotating cover 45 is fixedly connected to the upper end of the stabilizing shaft 44. A one-way air inlet pipe 46 and a one-way exhaust pipe 47 are embedded inside the rotating cover 45. A fixing block 48 is fixedly connected to the outer wall of the fixed seat 43. Two clamping blocks 49 are fixedly connected to the upper surface of the fixing block 48. Two side plates 410 are symmetrically fixedly connected to the outer wall of the rotating cover 45. A single round block 411 is fixedly connected to each side plate 410. A rotating block 412 is rotatably connected to the surface of the round block 411 and engages between the two clamping blocks 49. The two control valves 41 are connected to the connecting pipe 23 and the L-shaped pipe, respectively. Connect the two delivery pipes 42 to the cylinder 22 and the delivery chamber 34 respectively. Then, rotate the rotating cover 45 as needed to align the one-way inlet pipe 46 with the delivery pipe 42 that needs to be injected with gas. Then, connect the external filling and discharging connectors to the one-way inlet pipe 46 and the one-way exhaust pipe 47 respectively. At this time, the cylinder 22 and the delivery chamber 34 are connected to the one-way inlet pipe 46 and the one-way exhaust pipe 47 respectively. Open the two control valves 41. This ensures that when the cylinder 22 delivers hydrogen into the tank 1, the delivery chamber 34 will discharge the pressurized gas in the pressurizing bladder 33. When the delivery chamber 34 injects pressurized gas into the pressurizing bladder 33, the cylinder 22 will discharge the hydrogen in the tank 1. This can prevent the two gases from being simultaneously input into the tank 1 due to operator error, and can prevent the tank 1 from being damaged and leaked due to excessive internal pressure caused by operational errors.

[0018] The protective component 5 includes two snap-fit ​​rings 51, which are snapped onto the outer walls of the upper and lower ends of the tank body 1, respectively. Fixing rods 52 are fixedly connected at equal intervals to the outer walls of the snap-fit ​​rings 51. A protective cylinder 53 is fixedly connected to the other end of the fixing rod 52 located at the lower end of the tank body 1, and a snap-fit ​​cylinder 55 is fixedly connected to the other end of the fixing rod 52 located at the upper end of the tank body 1. The snap-fit ​​cylinder 55 is snapped into the inside of the protective cylinder 53. A clamping groove 54 is formed on the outer wall of the protective cylinder 53, which is engaged with the surface of the L-shaped tube 36. Multiple arc-shaped pulls are formed on the upper surface of the snap-fit ​​cylinder 55. The outer wall of the slot 56 and the snap-fit ​​cylinder 55 is symmetrically provided with a first insertion hole 57, and the outer wall of the tank 1 is symmetrically provided with a second insertion hole 58. The same L-shaped plug rod 59 is inserted into the first insertion hole 57 and the second insertion hole 58. Two L-shaped snap-fit ​​blocks 510 are fixedly connected to the outer wall of the tank 1. The L-shaped plug rod 59 is snapped into the inside of the L-shaped snap-fit ​​block 510. The tank 1 is protected by the protective cylinder 53 to prevent the tank 1 from being damaged by impact. The L-shaped plug rod 59 is inserted into the first insertion hole 57 and the second insertion hole 58 so that the tank 1 is fixed by the two snap-fit ​​rings 51.

[0019] Specifically, the arc-shaped opening 26 and the arc-shaped notch 27 correspond to each other. Both the arc-shaped opening 26 and the arc-shaped notch 27 are set around the rotating shaft 24. When the arc-shaped opening 26 rotates, it can coincide with the arc-shaped notch 27. By controlling the size of the overlapping part of the arc-shaped opening 26 and the arc-shaped notch 27, the hydrogen flow rate in the cylinder 22 is controlled.

[0020] Specifically, the cap 25 is snapped onto the lower outer wall of the cylinder 22, and the upper surface of the cap 25 matches the upper inner wall of the tank 1. The cap 25 blocks the lower end of the cylinder 22 to prevent hydrogen from entering the cylinder 22 under overpressure.

[0021] Specifically, the sealing ring 28 is located at the upper end of the connecting pipe 23. The upper surface of the sealing ring 28 is pressed against the inner wall of the upper end of the cylinder 22, which blocks the upper end of the cylinder 22 and prevents hydrogen leakage.

[0022] Specifically, the one-way intake pipe 46 and the one-way exhaust pipe 47 correspond to the two delivery pipes 42. The one-way intake pipe 46 and the one-way exhaust pipe 47 are tightly fitted to the two delivery pipes 42, so that the one-way intake pipe 46 and the one-way exhaust pipe 47 are connected and spliced ​​with the two delivery pipes 42 to prevent gas leakage.

[0023] In use, first, place the tank 1 inside the protective cylinder 53, so that the lower end of the tank 1 is engaged with the snap ring 51. Then, snap the snap cylinder 55 into the protective cylinder 53, so that the upper end of the tank 1 is engaged with the snap ring 51. Next, insert the L-shaped insert rod 59 into the first insertion hole 57 and the second insertion hole 58, so that the tank 1 is fixed by the two snap rings 51. Then, connect the two control valves 41 to the connecting pipe 23 and the L-shaped pipe 36 respectively, so that the two conveying pipes 42 are connected to the cylinder 22 and the conveying chamber 34 respectively. Then, rotate the cylinder as needed. Move the cover 45 to align the one-way inlet pipe 46 with the delivery pipe 42 that needs to be injected with gas. Then, connect the external filling / discharging connectors to the one-way inlet pipe 46 and the one-way exhaust pipe 47, respectively. At this time, the cylinder 22 and the delivery chamber 34 are connected to the one-way inlet pipe 46 and the one-way exhaust pipe 47, respectively. Open the two control valves 41. This ensures that when the cylinder 22 delivers hydrogen into the tank 1, the delivery chamber 34 will discharge the pressurized gas in the pressurization bladder 33, and then the delivery chamber 34 will inject pressurized gas into the pressurization bladder 33. When the cylinder 22 discharges hydrogen from the tank 1, it prevents operator error from causing both gases to be simultaneously introduced into the tank 1, thus preventing damage and leakage due to excessive internal pressure caused by operational errors. As the hydrogen flows through the cylinder 22, it drives the rotating shaft 24 to rotate via the rotating rod 29. The rotation of the shaft 24 causes the cylinder cover 25 to rotate, aligning the arc-shaped opening 26 with the arc-shaped notch 27. By controlling the size of the overlap between the arc-shaped opening 26 and the arc-shaped notch 27, the flow rate can be controlled. The flow rate of hydrogen in cylinder 22 can reduce the pressure of gas in the pipeline and prevent excessive pressure in tank 1 from causing damage to the pipeline by pushing the gas. When gas is injected into L-shaped tube 36, the gas is input into delivery chamber 34 through L-shaped tube 36, and then input into pressurizing bladder 33 through air hole 35 in delivery chamber 34. The gas expands pressurizing bladder 33, and pressurizing bladder 33 pushes the remaining hydrogen in tank 1 to be discharged, preventing the hydrogen pressure in tank 1 from being too low and causing the hydrogen to be unable to be discharged.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen storage tank, including a tank body (1), a slow-release component (2) is provided at the upper end of the tank body (1), a pressurization component (3) is provided inside the tank body (1), the slow-release component (2) and the pressurization component (3) are respectively connected to a delivery component (4) through pipelines, and a protection component (5) is provided outside the tank body (1). Its features are: The slow-release component (2) includes a fixing ring (21), which is embedded in the center of the upper outer wall of the tank (1). A cylinder (22) is fixedly sleeved inside the fixing ring (21). A connecting pipe (23) is fixedly connected to the outer wall of the cylinder (22). A rotating shaft (24) is rotatably connected to the upper outer wall of the cylinder (22). A cylinder cover (25) is fixedly connected to the lower end of the rotating shaft (24). An arc-shaped opening (26) is opened on the outer wall of the cylinder cover (25). An arc-shaped notch (27) is opened on the lower outer wall of the cylinder (22). A sealing ring (28) is fixedly sleeved on the upper surface of the rotating shaft (24). The sealing ring (28) is snapped onto the upper inner wall of the cylinder (22). A rotating rod (29) is fixedly connected to the uppermost end of the rotating shaft (24). The pressurization assembly (3) includes multiple connecting plates (31), which are symmetrically fixedly connected to the inner wall of the tank (1). The other end of each connecting plate (31) is fixedly connected to the same airbag column (32). A pressurization airbag (33) is fixedly connected to the inner wall of the airbag column (32). A delivery chamber (34) is opened at the lower end of the airbag column (32). Multiple air holes (35) are opened on the inner wall of the delivery chamber (34). An L-shaped tube (36) is fixedly sleeved on the lower inner wall of the delivery chamber (34). The other end of the L-shaped tube (36) extends through the outer wall of the tank (1) to the outside. The conveying assembly (4) includes two control valves (41), which are fixedly connected to the connecting pipe (23) and the L-shaped pipe (36) respectively. The other end of each control valve (41) is fixedly connected to a conveying pipe (42). A fixed seat (43) is fixedly sleeved on the surface of the other end of the conveying pipe (42). A stabilizing shaft (44) is rotatably connected to the center of the fixed seat (43). A rotating cover (45) is fixedly connected to the upper end of the stabilizing shaft (44). A single [unclear] is embedded inside the rotating cover (45). For the intake pipe (46) and the one-way exhaust pipe (47), a fixing block (48) is fixedly connected to the outer wall of the fixing base (43). Two clamping blocks (49) are fixedly connected to the upper surface of the fixing block (48). Two side plates (410) are symmetrically fixedly connected to the outer wall of the rotating cover (45). The same round block (411) is fixedly connected to the side plate (410). A rotating block (412) is rotatably connected to the surface of the round block (411). The rotating block (412) is engaged between the two clamping blocks (49).

2. The hydrogen storage tank according to claim 1, characterized in that: The protective component (5) includes two snap-fit ​​rings (51), which are snapped onto the outer walls of the upper and lower ends of the tank (1). Fixed rods (52) are fixedly connected at equal intervals to the outer walls of the snap-fit ​​rings (51). A protective cylinder (53) is fixedly connected to the other end of the fixed rod (52) located at the lower end of the tank (1), and a snap-fit ​​cylinder (55) is fixedly connected to the other end of the fixed rod (52) located at the upper end of the tank (1). The snap-fit ​​cylinder (55) is snapped into the inside of the protective cylinder (53). A clamping groove (54) is provided on the outer wall of the protective cylinder (53). The clamping groove (54) is clamped on the surface of the L-shaped tube (36). Multiple arc-shaped grooves (56) are opened on the upper surface of the clamping cylinder (55). A first insertion hole (57) is symmetrically opened on the outer wall of the clamping cylinder (55). A second insertion hole (58) is symmetrically opened on the outer wall of the tank (1). The same L-shaped insertion rod (59) is inserted into the first insertion hole (57) and the second insertion hole (58). Two L-shaped clamping blocks (510) are fixedly connected to the outer wall of the tank (1). The L-shaped insertion rod (59) is clamped inside the L-shaped clamping block (510).

3. The hydrogen storage tank according to claim 1, characterized in that: The arc-shaped opening (26) and the arc-shaped notch (27) correspond to each other, and both the arc-shaped opening (26) and the arc-shaped notch (27) are arranged around the pivot (24).

4. The hydrogen storage tank according to claim 1, characterized in that: The cap (25) is snapped onto the lower outer wall of the cylinder (22), and the upper surface of the cap (25) matches the upper inner wall of the tank (1).

5. The hydrogen storage tank according to claim 1, characterized in that: The sealing ring (28) is located at the upper end of the connecting pipe (23), and the upper surface of the sealing ring (28) is pressed against the inner wall of the upper end of the cylinder (22).

6. The hydrogen storage tank according to claim 1, characterized in that: The one-way intake pipe (46) and one-way exhaust pipe (47) correspond to the two delivery pipes (42), and the one-way intake pipe (46) and one-way exhaust pipe (47) are closely fitted to the two delivery pipes (42).

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