Valve pipe sealing device of marine hydrogen storage tank and marine hydrogen storage tank

Abstract

The application provides a valve pipe sealing device of a marine hydrogen storage tank and the marine hydrogen storage tank, relates to the technical field of valve pipe sealing, and the valve pipe sealing device is mainly composed of a protection cylinder, a closed shell and a sealing protection mechanism. The protection cylinder is sleeved on the valve pipe, the closed shell is provided with a valve pipe channel for penetrating the valve pipe, and is rotatably arranged on the side of the protection cylinder opposite to the marine hydrogen storage tank. The sealing protection mechanism is arranged at the connection between the protection cylinder and the closed shell, that is, the sealing protection mechanism is used to make the closed shell and the protection cylinder cooperate to seal and protect the connection of the valve pipe, so that the corrosion of seawater on the connection of the valve pipe during the driving of the ship can be effectively prevented, the hydrogen leakage is further reduced, the sealing effect of the connection between the closed shell and the valve pipe is improved by the sealing protection mechanism, and the sealing property between the valve pipe channel and the valve pipe is controlled.

Description

Technical Field

[0001] This invention relates to the field of valve and pipe sealing technology, and in particular to a valve and pipe sealing device for a marine hydrogen storage tank and the marine hydrogen storage tank itself. Background Technology

[0002] Hydrogen is a green, clean, efficient, and widely available secondary energy source. It is considered one of the fuels that can help the shipping industry achieve zero carbon emissions. However, when used in ships, it is limited by the current fuel cell power and hydrogen storage technology. It is only suitable for small and medium-sized ships with low range requirements and requires corresponding hydrogen storage tanks to store hydrogen.

[0003] The implementation of this technical solution still has at least the following drawbacks: Although existing marine hydrogen storage tanks can store hydrogen energy, they are used on ships. During the voyage, the high salt content of seawater vapor floating at sea can easily corrode the valve pipe connections, making pipeline leaks very likely. Moreover, conventional pipeline protective shells are inconvenient for maintaining valve pipes, thus increasing the maintenance time of hydrogen storage tanks and affecting the maintenance efficiency of hydrogen storage tanks. Improvements are urgently needed. Summary of the Invention

[0004] In view of this, one of the objectives of the present invention is to provide a valve pipe sealing device for a marine hydrogen storage tank, so as to solve the technical problem that the valve pipe connection on the hydrogen storage tank is easily corroded by seawater, which easily leads to pipeline leakage, and conventional pipeline protective shells are not convenient for maintaining the valve pipe, thus affecting the maintenance efficiency of the hydrogen storage tank.

[0005] The second objective of this invention is to provide a marine hydrogen storage tank containing a valve pipe sealing device for a marine hydrogen storage tank.

[0006] To achieve one of the above objectives, the present invention provides a valve pipe sealing device for a marine hydrogen storage tank, comprising a protective cylinder, a sealing shell, and a sealing and protective mechanism. The protective cylinder is sleeved on the valve pipe, and the sealing shell is provided with a valve pipe channel for penetrating the valve pipe and is rotatably disposed on the protective cylinder on the side opposite to the marine hydrogen storage tank. The sealing and protective mechanism is disposed at the connection between the protective cylinder and the sealing shell and is used to control the sealing performance between the valve pipe channel and the valve pipe.

[0007] Optionally, the sealing and protection mechanism includes a control component and a sealing component. The control component is located at the connection between the protective cylinder and the sealing shell, and the sealing component is located on the valve pipe channel. The control component is controlled to connect with the sealing component, so that the sealing component seals the gap between the valve pipe channel and the valve pipe.

[0008] Optionally, the control component includes a positioning ring and a ball-shaped pressure block. The positioning ring is slidably fitted onto the protective cylinder and has a first wedge-shaped block on its inner wall. The sealing shell has a second wedge-shaped block adapted to the first wedge-shaped block. A through groove is provided between the second wedge-shaped block and the sealing shell. The ball-shaped pressure block is slidably disposed in the through groove. An air storage bladder is provided below the ball-shaped pressure block. The air storage bladder is connected to the sealing component through an air pipe. When the first wedge-shaped block and the second wedge-shaped block contact each other, the ball-shaped pressure block is driven to slide in the through groove. The ball-shaped pressure block compresses the air storage bladder to seal the sealing component.

[0009] Optionally, the inner walls on both sides of the through groove are provided with sliding grooves, and the two sides of the ball pressing block are fixedly provided with sliders. When the ball pressing block slides in the through groove, it drives the sliders to slide in the sliding grooves. A first elastic element is fixedly provided below the sliders.

[0010] A support frame is provided below the channel, and the air storage bag is placed on the support frame.

[0011] Optionally, the sealing assembly includes an airbag pad disposed on the inner wall of the valve tube channel, and the airbag pad is connected to the air reservoir via an air tube.

[0012] Optionally, the sealing shell includes two symmetrically arranged semicircular shells, the valve pipe channel is located between the two semicircular shells, and the sealing assembly further includes a sealing gasket, which is bonded to the contact surface of the two semicircular shells.

[0013] Optionally, the positioning ring is provided with a first traction rope, and both ends of the first traction rope are simultaneously fixed to the outer side wall of the positioning ring and the hydrogen storage tank.

[0014] Optionally, it also includes an auxiliary reset mechanism for separating the sealing shell from the valve tube. The auxiliary reset mechanism is fixedly installed on the outer wall of the hydrogen storage tank body and is simultaneously fixedly connected to the sealing shell.

[0015] Optionally, the auxiliary reset mechanism includes a support plate, a traction rod, a second elastic element, and a second traction rope. The support plate is fixedly disposed on the outer wall of the hydrogen storage tank. The traction rod can movably pass through the support plate. The second elastic element is disposed at one end of the traction rod. One end of the second traction rope is fixedly disposed at the other end of the traction rod, and the other end of the second traction rope is fixedly disposed on the outer wall of the enclosed shell.

[0016] To achieve the second objective mentioned above, the present invention provides a marine hydrogen storage tank, including the valve pipe sealing device of any of the above-described marine hydrogen storage tanks.

[0017] The valve pipe sealing device for marine hydrogen storage tanks provided by this invention has the following technical advantages:

[0018] The valve pipe sealing device of this type of marine hydrogen storage tank mainly consists of a protective cylinder, a sealing shell, and a sealing protection mechanism. The protective cylinder is sleeved on the valve pipe, and the sealing shell has a valve pipe channel for passing through the valve pipe and is rotatably located on the side of the protective cylinder opposite to the marine hydrogen storage tank. The sealing protection mechanism of this invention is located at the connection between the protective cylinder and the sealing shell. That is, the sealing protection mechanism enables the sealing shell and the protective cylinder to cooperate to complete the sealing protection of the valve pipe connection, thereby effectively preventing seawater from corroding the valve pipe connection during ship navigation, further reducing hydrogen leakage. At the same time, the sealing protection mechanism controls the sealing performance between the valve pipe channel and the valve pipe, improving the sealing effect at the connection between the sealing shell and the valve pipe. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an installation state diagram of a preferred embodiment of the valve pipe sealing device for a marine hydrogen storage tank of the present invention.

[0021] Figure 2 yes Figure 1 A partially enlarged schematic diagram of the valve pipe sealing device at point A of the Chinese shipbuilding hydrogen storage tank;

[0022] Figure 3 yes Figure 1 A three-dimensional structural diagram of the semi-circular shell of the valve pipe sealing device of the hydrogen storage tank for Chinese ships.

[0023] Figure 4 yes Figure 1 A partially enlarged schematic diagram of section B of the valve pipe sealing device of the Chinese shipbuilding hydrogen storage tank;

[0024] Figure 5 yes Figure 1 Side view of the positioning ring of the valve pipe sealing device of a marine hydrogen storage tank.

[0025] in, Figures 1-5 :

[0026] 1. Hydrogen storage tank body; 11. Fixed base; 12. Valve pipe; 2. Protective cylinder; 21. Positioning ring; 22. Second wedge block; 23. Slide groove; 24. Ball pressure block; 25. Sliding block; 26. First elastic element; 27. Semi-circular shell; 271. Valve pipe channel; 28. First wedge block; 3. Support frame; 31. Gas storage bag; 33. Gas bag pad; 34. Gas pipe; 35. Sealing gasket; 4. Support plate; 41. Traction rod; 42. Second elastic element; 43. Second traction rope; 5. First traction rope. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] The following is a specific example. Figure 1-5 The structure of a preferred embodiment of the valve pipe sealing device for a marine hydrogen storage tank of the present invention will be described in detail.

[0029] like Figure 1 The diagram shows a structural schematic of a marine hydrogen storage tank containing a valve pipe sealing device according to the present invention. In addition to the valve pipe sealing device, the marine hydrogen storage tank also includes a hydrogen storage tank body 1. A fixed base 11 is detachably installed on the lower part of the hydrogen storage tank body 1. The fixed base 11 facilitates the support and fixation of the hydrogen storage tank body 1. A valve pipe 12 is connected to one side of the hydrogen storage tank body 1, through which hydrogen can be discharged or filled.

[0030] The valve pipe sealing device for marine hydrogen storage tanks of the present invention includes a protective cylinder 2, a sealing shell, and a sealing and protective mechanism.

[0031] like Figure 1 As shown, the protective cylinder 2 is sleeved on the valve tube 12. It is a cylindrical structure with an opening on one side, through which the bottom of the valve tube 12 can pass. The part of the outer wall of the valve tube 12 that contacts the protective cylinder 2 is sealed, and there is a cavity between the inner wall of the protective cylinder 2 and the outer wall of the valve tube 12.

[0032] In addition, the closed shell of this embodiment includes two symmetrically arranged semi-circular shells 27, which are assembled to form a cylindrical structure. There is a valve pipe channel 271 between the two semi-circular shells 27, that is, half of the valve pipe channel 271 is semi-cylindrical, and the two semi-cylindrical shapes form a cylindrical valve pipe channel 271. The valve pipe channel 271 is used to pass through the valve pipe 12.

[0033] In this embodiment, the two semi-circular shells 27 are rotatably mounted on the protective cylinder 2 on the side opposite to the marine hydrogen storage tank. The rotatability is achieved by hinges. The two semi-circular shells 27 are extensions of the protective cylinder 2 in the direction of the valve pipe 12, and the two semi-circular shells 27 are rotatably connected to the protective cylinder 2.

[0034] The sealing and protection mechanism of this embodiment is located at the connection between the protective cylinder 2 and the closed shell, and is used to control the sealing between the valve pipe channel 271 and the valve pipe 12.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, the sealing and protection mechanism includes a control component and a sealing component. The control component is located at the connection between the protective cylinder 2 and the closed shell. In this embodiment, the control component also serves to seal the connection between the protective cylinder 2 and the semi-circular shell 27. The sealing component is located on the valve pipe channel 271 and is used to seal the gap between the inner wall of the valve pipe channel 271 and the outer wall of the valve pipe 12. The control component and the sealing component are connected in a control manner so that the sealing component seals the gap between the valve pipe channel 271 and the valve pipe 12.

[0036] More specifically, such as Figure 2 and Figure 5 As shown, the control assembly includes a positioning ring 21 and a ball pressure block 24. The positioning ring 21 is preferably circular. The positioning ring 21 facilitates the positioning of the semi-circular shell 27. The positioning ring 21 is slidably sleeved on the protective cylinder 2, and a first wedge block 28 is provided on the inner wall. The first wedge block 28 preferably includes two pieces, and the two first wedge blocks 28 are symmetrically fixedly installed on the inner wall of the positioning ring 21. The first wedge block 28 is preferably made of rubber.

[0037] At the same time, such as Figure 2 As shown, the closed shell has a second wedge block 22 adapted to the first wedge block 28. The second wedge block 22 is bonded to the outer wall of the semi-circular shell 27. In this embodiment, the second wedge block 22 corresponds to the first wedge block 28. Through the cooperation of the first wedge block 28 and the second wedge block 22, the semi-circular shell 27 can be positioned and locked. The second wedge block 22 is preferably made of rubber. A through groove is provided between the second wedge block 22 and the closed shell. The ball pressure block 24 is slidably disposed in the through groove. An air storage bag 31 is provided below the ball pressure block 24. The air storage bag 31 is connected to the sealing assembly through the air pipe 34. When the first wedge block 28 and the second wedge block 22 come into contact, the ball pressure block 24 is driven to slide in the through groove. The ball pressure block 24 squeezes the air storage bag 31 so that the sealing assembly seals the valve pipe channel 271 and the valve pipe 12.

[0038] According to a preferred embodiment, in order to increase the compressive force of the ball-shaped pressure block 24 on the air reservoir 31, and at the same time facilitate the upward reset of the ball-shaped pressure block 24, such as Figure 2As shown, the inner walls on both sides of the through groove are provided with sliding grooves 23, and the two sides of the ball pressing block 24 are fixedly provided with sliders 25. The size of the sliders 25 matches the size of the sliding grooves 23, thereby ensuring the stability of the ball pressing block 24.

[0039] The slider 25 is preferably welded to the ball pressure block 24. When the ball pressure block 24 slides in the through groove, it drives the slider 25 to slide in the slide groove 23. A first elastic element 26 is fixedly provided below the slider 25, that is, the first elastic element 26 is fixedly installed in the inner cavity of the slide groove 23. When the slider 25 slides down, it squeezes the first elastic element 26, so that the first elastic element 26 stores the rebound force. In this embodiment, the first elastic element 26 is preferably a spring.

[0040] In order to support the air reservoir 31, such as Figure 2 As shown, a support frame 3 is provided below the channel, and the air storage bag 31 is placed on the support frame 3.

[0041] More specifically, the sealing component of this embodiment includes an airbag pad 33, which is preferably semi-circular and is adhered to the valve tube channel 271 of the semi-circular shell 27. The airbag pad 33 and the air reservoir 31 are connected through an air tube 34.

[0042] like Figure 3 As shown, the air outlet of the air reservoir 31 is connected to an air tube 34, and the other end of the air tube 34 is connected to the air inlet of the airbag pad 33, which facilitates the gas guidance and delivery through the air tube 34, thereby allowing the airbag pad 33 to expand and seal with the tube.

[0043] This embodiment expands the airbag 33 to tightly cover the outer wall of the valve pipe 12, and then works in conjunction with the sealing gaskets 35 on the opposite contact surfaces of the two semi-circular shells 27 to improve the sealing effect at the connection between the semi-circular shells 27 and the valve pipe 12.

[0044] In addition, such as Figure 1 As shown, the positioning ring 21 is provided with a first traction rope 5. Both ends of the first traction rope 5 are fixed to the outer side wall of the positioning ring 21 and the hydrogen storage tank. In this embodiment, the positioning ring 21 is traction-limited by the first traction rope 5, which further facilitates the use of the positioning ring 21.

[0045] To facilitate maintenance of valve pipe 12 of the hydrogen storage tank, such as Figure 1 and Figure 4 As shown, it also includes an auxiliary reset mechanism, which is used to separate the sealing shell from the valve pipe 12. The auxiliary reset mechanism is fixedly installed on the outer wall of the hydrogen storage tank body 1 and is also fixedly connected to the sealing shell.

[0046] Specifically, such as Figure 4As shown, the auxiliary reset mechanism includes a support plate 4, a traction rod 41, a second elastic element 42, and a second traction rope 43. The support plate 4 is fixedly disposed on the outer wall of the hydrogen storage tank, preferably welded to the outer wall of the hydrogen storage tank. In this embodiment, the support plate 4 preferably includes two parts. The traction rod 41 can movably pass through the support plate 4. The second elastic element 42 is disposed at one end of the traction rod 41. One end of the second traction rope 43 is fixedly disposed at the other end of the traction rod 41, and the other end of the second traction rope 43 is fixedly disposed on the outer wall of the closed shell. The second elastic element 42 is also preferably a spring.

[0047] In this embodiment, the second elastic element 42 drives the traction rod 41 to move to the right, and the traction rod 41 drives the second traction rope 43 to move accordingly. The second traction rope 43 drives the semi-circular shell 27 to rotate outward, thereby separating the semi-circular shell 27 from the valve pipe 12 connection, which further facilitates the maintenance of the valve pipe 12 and improves the maintenance efficiency of the hydrogen storage tank.

[0048] In this embodiment, when the valve pipe 12 is sealed using the valve pipe sealing device, the two semi-circular shells 27 are first pushed to rotate along the hinge towards the valve pipe 12, and then the positioning ring 21 is pushed to move to the left. When the first wedge block 28 on the positioning ring 21 contacts the first wedge block 28, the positioning ring 21 is pushed to move to the left. The first wedge block 28 on the positioning ring 21 will push the ball pressure block 24 downward, so that the ball pressure block 24 is put into the through groove in the second wedge block 22. When the first wedge block 28 moves to the left end of the second wedge block 22, the friction force between the two wedge blocks reaches the threshold, thereby completing the sealing and limiting of the semi-circular shell 27. Thus, the semi-circular shell 27 and the protective cylinder 2 cooperate to complete the sealing and protection of the connection of the valve pipe 12, thereby effectively preventing the corrosion of the connection of the valve pipe 12 by seawater during the ship's operation and further reducing the leakage of hydrogen.

[0049] Meanwhile, as the ball pressure block 24 moves downward, it will squeeze the air storage bag 31, causing the air inside the air storage bag 31 to be discharged into the air bag pad 33 through the air pipe 34. The air bag pad 33 expands and tightly covers the outer wall of the valve pipe 12. Together with the sealing gasket 35 on the contact surface of the semi-circular shell 27, the linkage improves the sealing effect of the semi-circular shell 27 at the connection of the valve pipe 12.

[0050] When maintenance is required at the connection of valve pipe 12, first push the first wedge block 28 on the positioning ring 21 to separate from the second wedge block 22. When the semi-circular shell 27 loses its restraining force, according to the elasticity of the elastic element, the second elastic element 42 will drive the traction rod 41 to move to the right. The traction rod 41 drives the second traction rope 43 to move accordingly. The second traction rope 43 drives the semi-circular shell 27 to rotate outward, thereby separating the semi-circular shell 27 from the connection of valve pipe 12, further facilitating the maintenance of valve pipe 12, thereby improving the maintenance efficiency of hydrogen storage tank.

[0051] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A valve pipe sealing device for a marine hydrogen storage tank, characterized in that, The device includes a protective cylinder, a closed shell, and a sealing and protective mechanism. The protective cylinder is sleeved on the valve pipe. The closed shell has a valve pipe channel for passing through the valve pipe and is rotatably disposed on the protective cylinder on the side opposite to the marine hydrogen storage tank. The sealing and protective mechanism is disposed at the connection between the protective cylinder and the closed shell and is used to control the sealing between the valve pipe channel and the valve pipe. The sealing and protection mechanism includes a control component and a sealing component. The control component is located at the connection between the protective cylinder and the closed shell, and the sealing component is located on the valve pipe channel. The control component is controlled to connect with the sealing component, so that the sealing component seals the gap between the valve pipe channel and the valve pipe. The control component includes a positioning ring and a ball-shaped pressure block. The positioning ring is slidably fitted onto the protective cylinder and has a first wedge-shaped block on its inner wall. The closed shell has a second wedge-shaped block adapted to the first wedge-shaped block. A through groove is provided between the second wedge-shaped block and the closed shell. The ball-shaped pressure block is slidably disposed in the through groove. An air storage bladder is provided below the ball-shaped pressure block. The air storage bladder is connected to the sealing component through an air tube. When the first wedge-shaped block and the second wedge-shaped block come into contact, the ball-shaped pressure block is driven to slide in the through groove. The ball-shaped pressure block compresses the air storage bladder to seal the sealing component. The sealing assembly includes an airbag pad, which is disposed on the inner wall of the valve tube channel, and the airbag pad is connected to the air reservoir via an air tube.

2. The valve pipe sealing device for a marine hydrogen storage tank according to claim 1, characterized in that, The inner walls on both sides of the through groove are provided with sliding grooves, and sliders are fixedly provided on both sides of the ball pressing block. When the ball pressing block slides in the through groove, it drives the sliders to slide in the sliding grooves. A first elastic element is fixedly provided below the sliders. A support frame is provided below the channel, and the air storage bag is placed on the support frame.

3. The valve pipe sealing device for a marine hydrogen storage tank according to claim 1, characterized in that, The sealing shell includes two symmetrically arranged semicircular shells, the valve pipe channel is located between the two semicircular shells, and the sealing assembly also includes a sealing gasket, which is bonded to the contact surface of the two semicircular shells.

4. The valve pipe sealing device for a marine hydrogen storage tank according to claim 1, characterized in that, The positioning ring is provided with a first traction rope, and the two ends of the first traction rope are simultaneously fixed to the outer side wall of the positioning ring and the hydrogen storage tank.

5. The valve pipe sealing device for a marine hydrogen storage tank according to any one of claims 1-4, characterized in that, It also includes an auxiliary reset mechanism for separating the sealing shell from the valve tube. The auxiliary reset mechanism is fixedly installed on the outer wall of the hydrogen storage tank body and is also fixedly connected to the sealing shell.

6. The valve pipe sealing device for a marine hydrogen storage tank according to claim 5, characterized in that, The auxiliary reset mechanism includes a support plate, a traction rod, a second elastic element, and a second traction rope. The support plate is fixedly disposed on the outer wall of the hydrogen storage tank. The traction rod can movably pass through the support plate. The second elastic element is disposed at one end of the traction rod. One end of the second traction rope is fixedly disposed at the other end of the traction rod, and the other end of the second traction rope is fixedly disposed on the outer wall of the enclosed shell.

7. A marine hydrogen storage tank, characterized in that, Includes the valve pipe sealing device of the marine hydrogen storage tank as described in any one of claims 1-6.

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