Support structure of hydrogen tank

Abstract

To provide a support structure of a hydrogen tank capable of suppressing increase in mass of the entire structure, while maintaining a height of a support block.SOLUTION: A support structure of a hydrogen tank comprises a support block that supports a neck part of the hydrogen tank. The support block has a vertically extending slit at an upper part of a support part that supports the neck part. The upper part has a shorter horizontal length than a lower part of the support part, and at the upper part, a horizontally extending bolt is arranged.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a support structure for a hydrogen tank. [Background technology]

[0002] Patent Document 1 discloses a method of supporting a hydrogen tank in which the neck portion of the tank is sandwiched horizontally from the ground between an upper mount member and an under mount member, and the mount members are fixed to the outside for support. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-206042 A Summary of the Invention [Problem to be solved by the invention]

[0004] To prevent the tank body from rotating, through bolts (fastened with a bolt and nut) are used, but to increase the fastening torque, it is necessary to use bolts with a large screw diameter. If a support block that is thick in the height direction is used as the neck support member to fix the tank at a high position, fastening with a through bolt will result in a long bolt length under the head, and the mass of the entire structure will be heavy.

[0005] The present disclosure has been made in consideration of these circumstances, and provides a support structure for a hydrogen tank that can maintain the height of the support blocks while preventing the mass of the entire structure from becoming heavy. [Means for solving the problem]

[0006] The present application discloses a support structure for a hydrogen tank, comprising a support block that supports the neck of the hydrogen tank, the support block having a vertically extending slit in an upper part of a support part that supports the neck, the upper part having a shorter horizontal length than the lower part of the support part, and a horizontally extending bolt disposed in the upper part. Effect of the Invention

[0007] According to the present disclosure, by shortening the width of the upper part of the support part of the support block and fastening the shortened upper part with a bolt, the length of the bolt can be shortened while maintaining the height of the support block, thereby preventing the overall structure from becoming heavy. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a schematic external view of a hydrogen tank 10. As shown in FIG. [Diagram 2] FIG. 2 is a diagram illustrating the support block 22. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] 1. Hydrogen tank structure FIG. 1 is a perspective view for explaining a hydrogen tank 10 supported by a hydrogen tank support structure according to one embodiment of the present disclosure. The hydrogen tank 10 is a tank that stores hydrogen at high pressure as a fuel gas to be supplied to, for example, a fuel cell (not shown). The hydrogen tank 10 that can be used here is well known, but for example, the hydrogen tank 10 has a cylindrical cylinder section 11 and dome sections 12 that are provided continuously on both sides of the cylinder section 11 in the axial direction and are formed so that the diameter decreases toward the axial direction. Both the cylinder section 11 and the dome section 12 are formed by covering a liner with a fiber reinforcement layer formed by winding a fiber bundle by a filament winding method (FW method).

[0010] A nozzle 13 is provided on the side of the dome section 12 opposite to the side connected to the cylinder section 11 (the end with the narrowest diameter). The nozzle 13 is held by a liner that corresponds to the portion of the dome section 12, and a part of the nozzle 13 and the liner are covered by a fiber reinforcement layer. Another part of the nozzle 13 protrudes from the dome section 12. The protruding part is a neck section 13a, and this neck section 13a is supported by a support block 22, which will be described later. A valve mechanism (not shown) is connected to the nozzle 13. The valve mechanism includes various valve mechanisms involved in supplying gas into the tank and discharging gas from the tank.

[0011] 2. Support block Fig. 2 is a diagram for explaining a support block 22 used in a support structure for a hydrogen tank according to one embodiment of the present disclosure. Fig. 2 is a diagram (cross-sectional view) of the support block 22 holding the mouthpiece 13, as viewed from the direction indicated by the arrow II in Fig. 1. In Fig. 2, the top and bottom of the paper are vertical directions, and the left and right of the paper are horizontal directions.

[0012] The support block 22 has holes 22c, 22c that penetrate vertically at both ends in the horizontal direction. The support block 22 is placed on a base 21 and fixed to the base 21 with block fixing bolts 23, 23, which are through-bolts arranged to penetrate the holes 22c, 22c.

[0013] The support block 22 has a support portion 22a which is a hole in which the neck portion 13a of the hydrogen tank 10 is placed and which supports the neck portion 13a. The upper side of the support portion 22a is defined as an upper portion 22e. The upper portion 22e is configured so that its horizontal size (width) W1 is smaller than the horizontal size (width) W2 of the lower portion 22f, which is the portion where the block fixing bolts 23, 23 are arranged. The upper portion 22e is provided with a hole 22d penetrating the upper portion 22e in the horizontal direction, and a slit 22b extending from the support portion 22a and penetrating the upper portion 22e in the vertical direction. The slit 22b is a slit that penetrates the upper portion 22e in the vertical direction from the support portion 22a to the upper portion 22e, and also penetrates the upper portion 22e in the front / rear direction of the page. The width of the slit 22b (the direction in which the interval is narrow) is the width direction of the upper portion 22e.

[0014] Bolts 24 (neck fastening bolts 24) are passed through holes 22d and are fastened so as to narrow the width of slits 22b, thereby fastening support portion 22a and stably holding neck portion 13a arranged inside thereof. Here, the fastening using the neck fastening bolt 24 may be performed by providing a female thread on the inner surface of the hole 22d and screwing it into the male thread of the neck fastening bolt 24, or the inner surface of the hole 22d may not be provided with a female thread, and a nut may be placed at the tip of the neck fastening bolt 24 passed through the hole 22d, and the upper part 22e may be clamped between the head of the neck fastening bolt 24 and the nut.

[0015] 3. Effects etc. According to the hydrogen tank support structure described above, upper portion 22e and support portion 22a are fastened together so as to narrow the width of slit 22b by horizontally disposed neck fastening bolt 24. As a result, neck portion 13a of hydrogen tank 10, which is disposed inside support portion 22a, is fastened to support portion 22a and stably supported.

[0016] Furthermore, by shortening the width (W1) of the upper portion 22e of the support block 22 relative to the portion (lower portion 22f) where the fixing bolt 23 is located and fastening the shortened upper portion 22e with the neck fastening bolt 24, even if the height (H in Figure 2) of the support block 22 is maintained or increased, the length of the neck fastening bolt 24 can be maintained (remains short) without being affected by the height, thereby preventing the mass of the entire structure from becoming heavy. [Explanation of symbols]

[0017] 10...hydrogen tank, 11...cylinder section, 12...dome section, 13...mouthpiece (neck section), 21...base, 22...support block, 22a...support section, 22b...slit, 22c...hole, 22d...hole, 22e...upper section, 22f...lower section, 23...fixing bolt, 24...neck fastening bolt

Claims

[Claim 1] A support structure for a hydrogen tank, comprising: a support block for supporting a neck of the hydrogen tank; The support block has a slit extending vertically on an upper portion of a support portion that supports the neck portion, The upper portion has a horizontal length shorter than that of the lower portion of the support portion, A horizontally extending bolt is disposed on the upper portion. Hydrogen tank support structure.

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