Fixed mounting device for marine high-pressure liquid hydrogen fuel tank

Abstract

The utility model discloses a fixing and mounting device for a marine high-pressure liquid hydrogen fuel tank. The fixing and mounting device comprises an upper tightening mechanism, a lower tightening mechanism and a bottom damping supporting mechanism, the upper tightening mechanism comprises an upper semicircular ring and two upper connecting plates which are respectively fixed at the two ends of the upper semicircular ring; the upper tightening mechanism is clamped at the upper part of the middle of the fuel tank; the lower tightening mechanism comprises a lower supporting plate and two lower connecting plates fixed to the two ends of the top of the lower supporting plate respectively. The top surface of the lower supporting plate is a lower semicircular arc surface; the lower tightening mechanism is clamped at the lower part of the middle of the fuel tank corresponding to the upper tightening mechanism, and the upper tightening mechanism and the lower tightening mechanism are fastened on the fuel tank through two fastening bolts; the bottom damping supporting mechanism comprises two bases which are uniformly distributed below the lower tightening mechanism and two damping springs which are respectively connected between the middle parts of the top surfaces of the two bases and the bottom surface of the lower supporting plate. The utility model can reduce the abrasion of the surface of the fuel tank caused by the shaking of the ship body, and reduce the risk of damage and leakage of the fuel tank.

Description

Technical Field

[0001] This utility model relates to a fixed installation device for a marine high-pressure liquid hydrogen fuel tank. Background Technology

[0002] Currently, hydrogen, as a clean energy source, has been developed and practically applied as a vehicle fuel on land. The corresponding hydrogen storage technology is in the form of high-pressure hydrogen storage cylinders. Based on the selection of materials and pressure bearing types, four types have been developed for hydrogen transportation and storage. Currently, the most widely used tank liner in China is a seamless aluminum alloy to prevent hydrogen embrittlement. The exterior of the aluminum alloy liner is wrapped with high-strength carbon fiber resin to ensure the tank structure can withstand the relevant design pressure, resulting in a relatively light overall weight. In the marine industry, hydrogen fuel storage tanks currently utilize cryogenic liquid technology, choosing vacuum tanks as the storage and transportation method. High-pressure vacuum tanks, as an energy storage form for hydrogen fuel cells and hydrogen engines, have advantages such as mature technology, flexible use, and light tank weight. Compared to land-based environments, use on ships requires consideration of the tank's swaying and resonance effects due to the random wave loads of the hull. Because the overall weight of the tank is relatively light and the surface is made of carbon fiber, traditional binding methods are prone to swaying during ship operation, affecting the overall stability of the tank and easily causing damage to the carbon fiber surface, ultimately damaging the tank. The hydrogen leak may have been caused by resonance between the tank and the ship's vibration frequency. Utility Model Content

[0003] The purpose of this invention is to fill the gap in the existing technology by providing a fixed installation device for a marine high-pressure liquid hydrogen fuel tank, which can reduce the wear on the surface of the fuel tank caused by the swaying of the hull and reduce the risk of fuel tank damage and leakage.

[0004] The purpose of this utility model is achieved as follows: a fixing and installation device for a marine high-pressure liquid hydrogen fuel tank, comprising an upper clamping mechanism, a lower clamping mechanism, and a bottom damping support mechanism; wherein,

[0005] The upper fastening mechanism includes an upper semi-circular ring and two upper connecting plates that are fixed to the two ends of the upper semi-circular ring in a one-to-one correspondence; the radius of the upper semi-circular ring is adapted to the radius of the outer surface of the fuel tank, and a boss protrudes downward on the inner side of the bottom surface of each upper connecting plate, and an upper bolt through hole is opened on the outer side of each upper connecting plate; the upper fastening mechanism is clamped in the upper middle part of the fuel tank.

[0006] The lower fastening mechanism includes a lower support plate and two lower connecting plates that are fixed to the top ends of the lower support plate in a one-to-one correspondence; the lower support plate is a rectangular plate and the top surface is a lower semi-circular arc surface with a radius adapted to the radius of the outer surface of the fuel tank; a groove adapted to the boss on the upper connecting plate is opened on the inner side of the top surface of each lower connecting plate, and a lower bolt hole coaxial with the upper bolt hole is opened on the outer side of each lower connecting plate;

[0007] The lower clamping mechanism is fitted into the lower middle part of the fuel tank in correspondence with the upper clamping mechanism, and the protrusions of the two upper connecting plates are embedded into the grooves of the two lower connecting plates in correspondence. The upper clamping mechanism and the lower clamping mechanism are then fastened to the middle of the fuel tank by two fastening bolts.

[0008] The bottom damping support mechanism includes at least two bases evenly distributed below the lower tightening mechanism and two damping springs that are connected one-to-one between the middle of the top surface of the two bases and the bottom surface of the lower support plate of the lower tightening mechanism; each base has bolt holes on both sides of the corresponding damping spring, so that each of the two bases is fixed to the hull by two bolts.

[0009] The aforementioned fixed installation device for marine high-pressure liquid hydrogen fuel tank includes protective gaskets made of Teflon between the inner end face of the upper semicircular ring of the upper clamping mechanism and the outer surface of the fuel tank, and between the top surface of the lower support plate of the lower clamping mechanism and the outer surface of the fuel tank.

[0010] In the aforementioned fixed installation device for marine high-pressure liquid hydrogen fuel tanks, a stainless steel gasket coated with Teflon is provided between the bottom surface of the boss on the upper connecting plate of the upper clamping mechanism and the bottom surface of the groove on the lower connecting plate of the lower clamping mechanism.

[0011] The features of the fixed installation device for the marine high-pressure liquid hydrogen fuel tank of this utility model are:

[0012] 1) The upper and lower clamping mechanisms, made of stainless steel, are fastened to the outer surface of the fuel tank with fastening bolts. Teflon protective gaskets are installed between the upper and lower clamping mechanisms and the outer surface of the fuel tank to offset the wear and damage to the carbon fiber surface of the fuel tank caused by shaking, thereby reducing the risk of hydrogen leakage caused by resonance between the fuel tank and the ship.

[0013] 2) By setting a bottom damping support mechanism at the bottom of the lower clamping mechanism, the damping spring absorbs the displacement caused by the ship's swaying of the fuel tank or the upper and lower clamping mechanisms, and reduces the resonance frequency, so that the carbon fiber on the surface of the fuel tank can withstand the friction and impact caused by the swaying of the liquid cargo during the operation of the ship, thereby reducing the risk of fuel tank damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the fixed installation device for the marine high-pressure liquid hydrogen fuel tank of this utility model.

[0015] Figure 2 yes Figure 1 Enlarged view of the P-section;

[0016] Figure 3 yes Figure 1 Enlarged view of the L-shaped section;

[0017] Figure 4 This is a perspective view of the installation state of the fixed installation device of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please see Figures 1 to 4 The present invention relates to a fixed installation device for a marine high-pressure liquid hydrogen fuel tank, comprising an upper clamping mechanism 1, a lower clamping mechanism 2, and a bottom damping support mechanism 4.

[0020] The upper fastening mechanism 1 includes an upper semi-circular ring 11 and two upper connecting plates 12 that are fixed to the two ends of the upper semi-circular ring 11 in a corresponding manner. The radius of the upper semi-circular ring 11 is adapted to the radius of the outer surface of the fuel tank 100. A boss 121 protrudes downward on the inner side of the bottom surface of each upper connecting plate 12, and an upper bolt through hole 122 is opened on the outer side of each upper connecting plate 12. The upper fastening mechanism 1 is clamped in the middle upper part of the fuel tank 100. A Teflon upper protective gasket 13 is provided between the inner end face of the upper semi-circular ring 11 of the upper fastening mechanism 1 and the outer surface of the fuel tank 100.

[0021] The lower fastening mechanism 2 includes a lower support plate 21 and two lower connecting plates 22 that are fixed to the top ends of the lower support plate 21 in a corresponding manner. The lower support plate 21 is a rectangular plate with a thickness that matches the thickness of the upper semicircular ring 11 of the upper fastening mechanism 1, and the top surface of the lower support plate 21 is a lower semicircular arc surface with a radius that matches the radius of the outer surface of the fuel tank 100. A groove 221 that matches the boss 121 on the upper connecting plate 12 is opened on the inner side of the top surface of each lower connecting plate 22, and a lower bolt through hole 222 that is coaxial with the upper bolt through hole 122 is opened on the outer side of each lower connecting plate 22.

[0022] The lower clamping mechanism 2 is fitted into the lower middle part of the fuel tank 100, corresponding to the upper clamping mechanism 1. The protrusions 121 of the two upper connecting plates 12 are embedded into the grooves 221 of the two lower connecting plates 22, so that the lower clamping mechanism 2 and the upper clamping mechanism 1 are precisely positioned. A stainless steel gasket 30 with Teflon coating is provided between the bottom surface of the protrusion 121 and the bottom surface of the groove 221. The upper clamping mechanism 1 and the lower clamping mechanism 2 are then fastened to the middle of the fuel tank 100 by two fastening bolts 3. A lower protective gasket 23 made of Teflon is provided between the top surface of the lower support plate 11 of the lower clamping mechanism 2 and the outer surface of the fuel tank 100.

[0023] The bottom damping support mechanism 4 includes four bases 40 evenly distributed below the lower clamping mechanism 2 and four damping springs 41 connected one-to-one between the top center of the four bases 40 and the bottom surface of the lower support plate 21 of the lower clamping mechanism 2. Each base 40 has bolt holes 42 on both sides of the corresponding damping spring 41, so that each of the four bases 40 is fixed to the hull by two bolts. The number of bases 40D is adjusted according to the diameter and volume of the fuel tank 100.

[0024] The present invention relates to a fixed installation device for a marine high-pressure liquid hydrogen fuel tank, wherein several devices are provided according to the length of the fuel tank 100, and are spaced apart along the length of the fuel tank 100 (see...). Figure 4 This design allows the fuel tank 100 to be stably fixed to the ship. It not only reduces damage to the carbon fiber surface of the hydrogen storage tank, minimizes weld risks, avoids damage to the fuel tank structure, and reduces the impact and frequency resonance of liquid sloshing; but also, by employing independent upper and lower tightening mechanisms 1 and 2, it allows for more convenient, flexible, and labor-saving tightening and fixing of fuel tanks of different lengths and diameters to the ship's area.

[0025] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A fixing and installation device for a marine high-pressure liquid hydrogen fuel tank, comprising an upper clamping mechanism, a lower clamping mechanism, and a bottom damping support mechanism; characterized in that, The upper fastening mechanism includes an upper semi-circular ring and two upper connecting plates that are fixed to the two ends of the upper semi-circular ring in a one-to-one correspondence; the radius of the upper semi-circular ring is adapted to the radius of the outer surface of the fuel tank, and a boss protrudes downward on the inner side of the bottom surface of each upper connecting plate, and an upper bolt through hole is opened on the outer side of each upper connecting plate; the upper fastening mechanism is clamped in the upper middle part of the fuel tank. The lower fastening mechanism includes a lower support plate and two lower connecting plates that are fixed to the top ends of the lower support plate in a one-to-one correspondence; the lower support plate is a rectangular plate and the top surface is a lower semi-circular arc surface with a radius adapted to the radius of the outer surface of the fuel tank; a groove adapted to the boss on the upper connecting plate is opened on the inner side of the top surface of each lower connecting plate, and a lower bolt hole coaxial with the upper bolt hole is opened on the outer side of each lower connecting plate; The lower clamping mechanism is fitted into the lower middle part of the fuel tank in correspondence with the upper clamping mechanism, and the protrusions of the two upper connecting plates are embedded into the grooves of the two lower connecting plates in correspondence. The upper clamping mechanism and the lower clamping mechanism are then fastened to the middle of the fuel tank by two fastening bolts. The bottom damping support mechanism includes at least two bases evenly distributed below the lower tightening mechanism and two damping springs that are connected one-to-one between the middle of the top surface of the two bases and the bottom surface of the lower support plate of the lower tightening mechanism; each base has bolt holes on both sides of the corresponding damping spring, so that each of the two bases is fixed to the hull by two bolts.

2. The fixing and installation device for a marine high-pressure liquid hydrogen fuel tank according to claim 1, characterized in that, The inner end face of the upper semicircular ring of the upper clamping mechanism and the outer surface of the fuel tank are each provided with a protective gasket made of Teflon. The top surface of the lower support plate of the lower clamping mechanism and the outer surface of the fuel tank are also provided with a protective gasket made of Teflon.

3. The fixing and installation device for a marine high-pressure liquid hydrogen fuel tank according to claim 1, characterized in that, A stainless steel gasket coated with Teflon is provided between the bottom surface of the boss on the upper connecting plate of the upper tightening mechanism and the bottom surface of the groove on the lower connecting plate of the lower tightening mechanism.

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