High-pressure tank

Abstract

To provide a high pressure tank capable of rapidly stopping gas leakage when gas leakage occurs in a valve.SOLUTION: A high pressure tank 1 includes a tank body 3, a valve 4, and a handle 5. The valve 4 includes: a first body 41 having a first communication hole 414 communicating with an inside of the tank body 3, and a first storage hole 415 communicating with the first communication hole 414; a second body 42 having a second communication hole 425 communicating with the first storage hole 415, and a second storage hole 426 communicating with the second communication hole 425; a connector 43 having a through hole 434 communicating with the second storage hole 426; a second valve element 47 which blocks the communication between the through hole 434 and the second storage hole 426 and allows the communication between the through hole 434 and the second storage hole 426 by pressing force of a push pin 105; and a handle 423 which can be fit in a handle receiving groove 104 on a gas supply object 10 side. A first valve element 424 is opened and closed in accordance with twisting operation of the handle 5.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a high-pressure tank, and more particularly to a high-pressure tank having a valve attached to a nozzle. [Background technology]

[0002] In a conventional technical field, for example, as described in Patent Document 1, a valve unit including a main housing, a sub-housing, a main valve, and a sub-valve is attached to the nozzle of a tank body. The main valve has a valve mechanism, and the sub-valve is biased to a closed state by a biasing means. A convex portion on the main valve moves the sub-valve to an open state against the biasing force of the biasing means, and when the sub-valve moves from the closed state, a sealing member blocks communication between the main valve and the outside of the tank body.

[0003] In a high-pressure tank having such a structure, if the valve mechanism of the main valve malfunctions and needs to be replaced, the sub-valve opening means releases the sub-valve from its open state, and the biasing means returns the sub-valve to its closed state. Then, with the sub-valve closing the through-hole that directs gas from the tank body to the outside, the main valve is removed from the mounting part, and a working main valve is mounted on the mounting part. This prevents outside air from entering the tank body and gas stored in the tank body from escaping when the main valve mounted on the nozzle is replaced. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-177538 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned high-pressure tank, if a gas leak occurs in the main valve or sub-valve due to foreign matter getting caught or the valve being stuck open, it is difficult to quickly stop the gas leak.

[0006] The present invention has been made to solve such technical problems, and aims to provide a high-pressure tank that can quickly stop gas leakage if a gas leak occurs at a valve. [Means for solving the problem]

[0007] The high-pressure tank according to the present invention is a high-pressure tank comprising: a tank body for storing gas; a valve attached to the tank body; and a handle attached to the tank body on the opposite side to the valve, wherein the valve is attached to a mouthpiece of the tank body and comprises: a first body having a first communication hole therein communicating with the interior of the tank body and a first storage hole that communicates with the first communication hole and has a larger diameter than the first communication hole; a second body having a second communication hole therein communicating with the first storage hole and a second storage hole that communicates with the second communication hole and has a larger diameter than the second communication hole, and a first valve body housed in the first storage hole to block or allow communication between the first storage hole and the first communication hole; and a through-hole connected to the second body and inside which communicates with the second storage hole. a second valve body that is stored in the second storage hole and blocks communication between the through hole and the second storage hole by the biasing force of a spring and allows communication between the through hole and the second storage hole by the pressing force of a push pin provided in the gas supply object; and a handle portion that protrudes from the second body in the radial direction of the tank main body and can be fitted into a handle receiving groove provided in the gas supply object when the high-pressure tank is fitted with the gas supply object via the connector portion, and the first valve body blocks or allows communication between the first storage hole and the first communication hole in accordance with the twisting operation of the handle portion.

[0008] In the high-pressure tank according to the present invention, when the handle portion is fitted into the handle receiving groove of the object to which gas is supplied, the first valve body blocks or allows communication between the first storage hole and the first communication hole in response to the twisting of the handle portion, so that the first valve body can be opened and closed simply by twisting the handle portion. Therefore, if a gas leak occurs in the valve, the communication between the first storage hole and the first communication hole can be easily blocked by twisting the handle portion, thereby stopping the gas leak. As a result, if a gas leak occurs in the valve, the gas leak can be stopped quickly. [Effects of the Invention]

[0009] According to the present invention, when a gas leak occurs in a valve, the gas leak can be stopped quickly. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 2 is a schematic cross-sectional view showing a high-pressure tank according to the embodiment. [Figure 2] FIG. 2 is an enlarged cross-sectional view showing a valve. [Figure 3] 10 is a cross-sectional view showing a state in which the high-pressure tank is fitted to an object to which gas is supplied. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] 10 is a cross-sectional view showing the opening and closing of the valve when the handle is twisted and turned in a state where the valve is fitted to an object to which gas is supplied. FIG. [Figure 6] FIG. 10 is a cross-sectional view showing the state in which the second valve body is opened by the pressing force of the push pin. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of a high-pressure tank according to the present invention will be described with reference to the drawings. In the following description, the left and right directions are merely directions for convenience that correspond to the states shown in the drawings, and do not limit the posture or arrangement of the high-pressure tank. In addition, in the following description, an example is given in which the high-pressure tank is filled with hydrogen gas, but the gas that can be filled into the high-pressure tank is not limited to hydrogen gas, and may be various compressed gases such as CNG (compressed natural gas), or various liquefied gases such as LNG (liquefied natural gas) and LPG (liquefied petroleum gas).

[0012] Fig. 1 is a schematic cross-sectional view showing a high-pressure tank according to an embodiment, and Fig. 2 is an enlarged cross-sectional view showing a valve. As shown in Fig. 1, the high-pressure tank 1 according to this embodiment is a cylindrical tank with a handle that is applied to, for example, a portable hydrogen cartridge container, and is used for a variety of applications (i.e., objects to be supplied with gas) such as transportation means such as drones, motorcycles, and automobiles, and household power sources. This high-pressure tank 1 includes a cylindrical case 2, a tank body 3 and a valve 4 housed inside the case 2, and a handle 5 attached to one end of the case 2 and exposed to the outside of the case 2.

[0013] The case 2 is made of, for example, a hard resin material, and has a rectangular case opening 21 formed in the center of the end opposite the handle portion 5 (see Figure 4). The tank main body 3, the valve 4, and a safety valve body 7 and safety valve 9 (described later) are supported by a support body 6 made of a metal material or a hard resin material. The support body 6 is, for example, a frame fixed to the tank main body 3, and is fixed to the inner wall of the case 2 via a plurality of mounting members 8.

[0014] The tank body 3 is a substantially cylindrical high-pressure gas storage container with rounded dome-shaped ends. It includes a liner 31 with gas barrier properties, a first fiber-reinforced resin layer 32 formed to cover the outer peripheral surface of the liner 31, and a second fiber-reinforced resin layer 33 covering the first fiber-reinforced resin layer 32. The liner 31 is a hollow container with a storage space for storing hydrogen gas and is made of a resin material with gas barrier properties against hydrogen gas. The liner 31 has a cylindrical body portion 31a and a pair of dome portions (left dome portion 31b and right dome portion 31c) provided at both ends of the body portion 31a. The left dome portion 31b and the right dome portion 31c are each hemispherical. The resin constituting the liner 31 may be any resin with good gas barrier properties, such as thermoplastic resins such as polyamide, polyethylene, ethylene-vinyl alcohol copolymer resin (EVOH), and polyester, or thermosetting resins such as epoxy.

[0015] The first fiber-reinforced resin layer 32 and the second fiber-reinforced resin layer 33 have the function of reinforcing the liner 31 to improve the mechanical strength, such as the rigidity and pressure resistance, of the high-pressure tank 1, and each layer has a plurality of layers formed of fiber-reinforced resin. The fiber-reinforced resin is formed by impregnating a fiber bundle, for example, made of fibers having a diameter of about several μm, with a thermosetting resin or a thermoplastic resin. Examples of the fiber include reinforcing fibers such as carbon fiber, glass fiber, aramid fiber, alumina fiber, boron fiber, steel fiber, PBO fiber, natural fiber, and high-strength polyethylene fiber. In particular, carbon fiber is preferably used from the viewpoints of light weight and mechanical strength.

[0016] Examples of thermosetting resins include epoxy resins, modified epoxy resins such as vinyl ester resins, phenolic resins, melamine resins, urea resins, unsaturated polyester resins, alkyd resins, polyurethane resins, and thermosetting polyimide resins. Examples of thermoplastic resins include polyether ether ketone, polyphenylene sulfide, polyacrylic esters, polyimides, and polyamides.

[0017] Openings are formed at both ends of the tank body 3, and nozzles 34, 35 are provided at the openings. Specifically, as shown in Fig. 1, nozzle 34 is inserted into the opening of the tank body 3 having the left dome portion 31b, and nozzle 35 is inserted into the opening of the tank body 3 having the right dome portion 31c. The nozzle 34 functions as a nozzle on the valve side, and the above-mentioned valve 4 is attached therein. On the other hand, the nozzle 35 functions as a nozzle on the safety valve side, and the safety valve body 7 is attached therein.

[0018] The nozzles 34, 35 are each made of a metal material such as stainless steel or aluminum alloy and are formed in a substantially cylindrical shape, with one end inserted into the opening and the other end protruding to the outside of the high-pressure tank 1 along the axial direction of the high-pressure tank 1. More specifically, the nozzles 34, 35 have substantially cylindrical nozzle main bodies 341, 351 extending along the axial direction of the high-pressure tank 1, and flanges 342, 352 formed integrally with the nozzle main bodies 341, 351 and protruding in the radial direction of the high-pressure tank 1. The nozzle main body 341 has an inner circumferential wall formed with a female thread 343 for threadably engaging with the valve 4, and the nozzle main body 351 has an inner circumferential wall formed with a female thread 353 for threadably engaging with the safety valve body 7.

[0019] The safety valve body 7 is made of a metal material such as stainless steel or aluminum alloy. As shown in FIG. 1 , the safety valve body 7 is generally cylindrical, and has a through-hole 71 formed therein that communicates with the interior of the tank main body 3. A male thread portion 72 is formed in a portion of the outer peripheral wall of the safety valve body 7. The safety valve body 7 having this structure is attached to the nozzle portion 35 so as to close the nozzle portion 35, and is fastened to the nozzle portion 35 by threading the male thread portion 72 into the female thread portion 353 of the nozzle portion 35. A metal safety valve 9 is attached inside the safety valve body 7.

[0020] The safety valve 9 is, for example, a thermally activated pressure relief device, which is a safety device that releases gas inside the tank body 3 to the outside when heat such as a flame is detected.

[0021] The handle portion 5 is a so-called grip and is made of, for example, a hard resin material, and is arch-shaped and protrudes outward from the case 2 so that the user of the high-pressure tank 1 can easily grip and twist it.

[0022] On the other hand, the valve 4 is a member for discharging the hydrogen gas stored in the tank main body 3 to the object to which the gas is to be supplied, and is made of a metal material such as stainless steel or an aluminum alloy. As shown in Fig. 2, the valve 4 includes a first body 41 attached to the mouthpiece 34, a second body 42 having a portion inserted into the first body 41 and a portion exposed from the first body 41, and a connector portion 43 connected to the second body 42 and adapted to fit into the object to which the gas is to be supplied.

[0023] The first body 41 is made of a hollow cylindrical body with a generally T-shaped cross section, and has an insertion portion 411 that extends in the axial direction of the high-pressure tank 1 and is inserted into the nozzle portion 34, a flange portion 412 that is exposed to the outside of the nozzle portion 34 and extends in the radial direction of the high-pressure tank 1, and a male thread portion 413 formed on a part of the outer circumferential wall of the insertion portion 411. The first body 41 having such a structure is inserted into the nozzle portion 34 until the flange portion 412 abuts against the tip surface of the nozzle portion 34, and is fastened to the nozzle portion 34 by threading the male thread portion 413 into the female thread portion 343 of the nozzle portion 34.

[0024] 2, a circumferential groove is provided in the insertion portion 411, closer to the inside of the tank main body 3 than the male thread portion 413. An O-ring 44 is fitted into the circumferential groove to maintain a tight seal between the insertion portion 411 and the nozzle main body portion 341 of the nozzle portion 34. Also provided inside the first body 41 are a first communication hole 414 that communicates with the inside of the tank main body 3, and a first storage hole 415 that communicates with the first communication hole 414 and has a larger diameter than the first communication hole 414. The first communication hole 414 and the first storage hole 415 each extend along the axial direction of the high-pressure tank 1 and are arranged coaxially.

[0025] A step 416 is formed between the relatively small-diameter first communication hole 414 and the relatively large-diameter first storage hole 415. The edge of the step 416 forms a valve seat that comes into contact with and separates from a first valve body 424, which will be described later. A female screw 417 is formed on the inner circumferential wall of the first storage hole 415 adjacent to the step 416.

[0026] The second body 42 is a hollow cylinder with a generally cross-shaped cross section, and has an inserted portion 421 inserted into the first body 41, an exposed portion 422 exposed from the first body 41, and a handle portion 423 protruding from the exposed portion 422 in the radial direction of the tank main body 3 (i.e., the radial direction of the high-pressure tank 1). The inserted portion 421 is inserted into the first storage hole 415 of the first body 41, and the exposed portion 422 is exposed from the first storage hole 415. The handle portion 423 is formed integrally with the exposed portion 422 and consists of a pair of rod-shaped members extending in opposite directions from the exposed portion 422 (see FIG. 4). The handle portion 423 is formed so as to be able to be fitted into a handle receiving groove 104 provided in the gas supply object 10 when the high-pressure tank 1 is fitted to the gas supply object 10 via the connector portion 43.

[0027] As shown in FIG. 2 , a male thread 428 that screws into the female thread 417 of the first body 41 is formed on a portion of the outer circumferential wall of the inserted portion 421. A portion of the inserted portion 421 closer to the inside of the tank main body 3 than the male thread 428 is reduced in diameter to create a space between the first storage hole 415 and the first storage hole 415. The tip of the inserted portion 421 is machined into a truncated cone shape and constitutes a first valve body 424 that blocks or allows communication between the first storage hole 415 and the first communication hole 414. Furthermore, a circumferential groove is formed on the outer circumferential wall of the inserted portion 421 closer to the handle portion 423 than the male thread 428, and an O-ring 45 that maintains a tight seal between the inserted portion 421 and the peripheral wall of the first storage hole 415 is fitted into the circumferential groove. Meanwhile, a male thread 429 that screws into the connector portion 43 is formed on the outer circumferential wall of the exposed portion 422.

[0028] Further, a second communication hole 425 communicating with the first storage hole 415 of the first body 41, and a second storage hole 426 communicating with the second communication hole 425 and having a larger diameter than the second communication hole 425 are provided inside the second body 42. The second communication hole 425 has a first portion extending along the axial direction of the high-pressure tank 1, and a second portion extending along the radial direction of the high-pressure tank 1. The second portion of the second communication hole 425 is located closer to the handle portion 423 than the first valve body 424, and opens into the space between the inserted portion 421 and the first storage hole 415.

[0029] A step 427 is formed between the relatively small-diameter second communication hole 425 and the relatively large-diameter second storage hole 426. The second storage hole 426 is arranged coaxially with the first portion of the second communication hole 425. The spring 46 and the second valve body 47 are stored in the second storage hole 426. The step 427 functions as a restricting portion that restricts the spring 46.

[0030] 2, the spring 46 is disposed between the second valve body 47 and the step portion 427, and biases the second valve body 47 in a direction to close the valve. The second valve body 47 has a truncated conical shape whose diameter decreases toward the connector portion 43. The second valve body 47 is formed so that the biasing force of the spring 46 blocks communication between a through hole 434 (described later) of the connector portion 43 and the second storage hole 426, and that the pressing force of a push pin 105 provided in the gas supply object 10 allows communication between the through hole 434 and the second storage hole 426.

[0031] The connector portion 43 is a member for fitting with a fitted portion 102 (described later) of the gas supply object 10. The connector portion 43 has a receiving portion 431 that receives a plug portion 103 (described later) of the gas supply object 10, and a cylindrical screw portion 432 that protrudes from the receiving portion 431 and fits externally with an exposed portion 422 of the second body 42. The receiving portion 431 and the screw portion 432 are integrally formed.

[0032] A through hole 434 communicating with the second storage hole 426 of the second body 42 is formed inside the receiving portion 431. The through hole 434 has a stepped structure in which the inner diameter changes so as to regulate the insertion depth of the plug portion 103 of the gas supply object 10 inserted therein. In addition, a female thread portion 433 that threadably engages with the male thread portion 429 of the second body 42 is formed on the inner circumferential wall of the threaded portion 432. The connector portion 43 is fastened to the exposed portion 422 of the second body 42 by threadably engaging the female thread portion 433 with the male thread portion 429 of the second body 42.

[0033] As shown in FIG. 2, when the connector portion 43 is connected to the second body 42, communication between the through hole 434 and the second storage hole 426 of the second body 42 is blocked by the second valve body 47 described above.

[0034] Hereinafter, the opening and closing states of the valve 4 when the high-pressure tank 1 is attached to and detached from the gas supply object 10 will be described with reference to FIGS.

[0035] First, the structure of the gas supply object 10 will be briefly described. As shown in Figures 3 and 4, the gas supply object 10 is, for example, the above-mentioned application in which hydrogen gas from a high-pressure tank 1 is supplied, and includes a guide hole 101 into which the high-pressure tank 1 can be smoothly inserted, and a fitted portion 102 that stands upright from the center of the bottom of the guide hole 101 and opens toward the high-pressure tank 1. The fitted portion 102 is formed smaller than the case opening 21 of the high-pressure tank 1 so that it can be smoothly inserted into the case opening 21. The fitted portion 102 has a plug portion 103 that is inserted into the through hole 434 of the connector portion 43, and a handle receiving groove 104 that receives the handle portion 423 of the high-pressure tank 1 when the plug portion 103 is inserted into the through hole 434.

[0036] A receiving hole 106 for receiving a push pin 105 is formed in the center of the plug portion 103. The receiving hole 106 is formed so as to be positioned coaxially with the through hole 434 when the plug portion 103 is inserted into the through hole 434. The push pin 105 can be moved outward from the tip of the plug portion 103 and returned into the receiving hole 106 by, for example, a drive mechanism. In addition, a recess 107 is formed around the plug portion 103, into which the receiving portion 431 of the connector portion 43 of the high-pressure tank 1 can be inserted. Meanwhile, the handle receiving groove 104 has side walls that restrict the handle portion 423 of the high-pressure tank 1 that is fitted therein.

[0037] When setting the high-pressure tank 1 on the object 10 to be supplied with gas for use, the user holds the handle 5, for example, and inserts the high-pressure tank 1 into the guide hole 101 of the object 10 to be supplied with gas with the side of the high-pressure tank 1 on which the valve 4 is located facing the object 10 to be supplied with gas. As described above, the case opening 21 is opened at the tip of the case 2 of the high-pressure tank 1, and therefore, as the high-pressure tank 1 is inserted into the guide hole 101, the fitted portion 102 located at the bottom of the guide hole 101 enters the case 2 through the case opening 21.

[0038] When the high-pressure tank 1 is completely inserted into the guide hole 101, the connector portion 43 of the high-pressure tank 1 fits into the fitting portion 102 of the gas supply object 10. That is, the plug portion 103 of the gas supply object 10 is inserted into the through-hole 434 of the connector portion 43, and the handle portion 423 of the high-pressure tank 1 is fitted into the handle receiving groove 104 of the gas supply object 10.

[0039] In this embodiment, from the viewpoint of ensuring the safe use of the high-pressure tank 1, it is specified that the high-pressure tank 1 inserted into the guide hole 101 of the gas supply object 10 is rotated, for example, counterclockwise to lock the high-pressure tank 1 to the gas supply object 10. Therefore, after the user has completely inserted the high-pressure tank 1 into the guide hole 101, the user grips the handle portion 5 of the high-pressure tank 1 and twists it counterclockwise, for example, by 45°, to lock the high-pressure tank 1 to the gas supply object 10.

[0040] Since the handle portion 423 of the high-pressure tank 1 is restricted by the side wall of the handle receiving groove 104 of the gas supply object 10, twisting the grip portion 5 rotates the second body 42 by 45° relative to the first body 41 (see FIG. 5). As a result, the first valve element 424 formed at the tip of the second body 42 moves in the valve opening direction, i.e., in the direction allowing communication between the first storage hole 415 of the first body 41 and the first communication hole 414. Therefore, as shown in FIG. 5, the first valve element 424 moves away from the valve seat, and hydrogen gas inside the tank main body 3 passes through the first communication hole 414, the gap between the first valve element 424 and the valve seat, and the second communication hole 425 in this order, and enters the second storage hole 426 of the second body 42 (see the gray portion in FIG. 5). At this time, since the second valve body 47 is in a closed state, the second valve body 47 prevents the hydrogen gas from entering the gas supply object 10.

[0041] When the user activates the drive mechanism on the gas supply object 10 side by, for example, operating a button, the push pin 105 housed in the accommodation hole 106 protrudes from the tip of the plug portion 103 and comes into contact with the second valve body 47 on the high-pressure tank 1 side, pressing the second valve body 47 in the valve-opening direction against the biasing force of the spring 46 (see FIG. 6). The second valve body 47 opens in response to the pressing force of the push pin 105, and the hydrogen gas that has entered the inside of the second accommodation hole 426 of the second body 42 flows toward the gas supply object 10 side through the gap between the accommodation hole 106 and the push pin 105 (see the gray portion in FIG. 6).

[0042] When the user wishes to stop the flow of hydrogen gas, the user simply operates a button to stop the drive mechanism on the gas supply object 10 side. This causes the push pin 105 to retract and return to the accommodation hole 106, and the second valve body 47 closes again due to the biasing force of the spring 46. Therefore, the entry of hydrogen gas into the gas supply object 10 is prevented.

[0043] Furthermore, if a gas leak occurs at the valve 4 due to, for example, foreign matter getting caught or the valve being stuck open, or if the user wishes to remove the high-pressure tank 1 from the gas supply object 10, the user can unlock the high-pressure tank 1 and the gas supply object 10 by gripping the handle 5 and twisting the high-pressure tank 1 clockwise, for example, by 45 degrees. At this time, the handle portion 423 of the high-pressure tank 1 is restricted by the side wall of the handle receiving groove 104 of the gas supply object 10, causing the second body 42 to rotate 45 degrees relative to the first body 41. This causes the first valve element 424 of the second body 42 to move in the valve closing direction, i.e., in the direction that blocks communication between the first storage hole 415 of the first body 41 and the first communication hole 414. This prevents hydrogen gas from inside the tank main body 3 from entering the second communication hole 425 of the second body 42.

[0044] In the high-pressure tank 1 according to this embodiment, when the handle portion 423 of the high-pressure tank 1 is fitted into the handle receiving groove 104 of the gas supply object 10, the first valve body 424 blocks or allows communication between the first storage hole 415 and the first communication hole 414 in response to a user's twisting operation of the handle portion 5. That is, the first valve body 424 can be opened and closed in conjunction with the twisting operation of the handle portion 5. Therefore, after the user inserts the high-pressure tank 1 into the guide hole 101 of the gas supply object 10, the first valve body 424 can be opened and closed simply by twisting the handle portion 5. Therefore, if a gas leak occurs in the valve 4, the user can easily block communication between the first storage hole 415 and the first communication hole 414 by twisting the handle portion 5, thereby quickly stopping the gas leak.

[0045] Furthermore, before the high-pressure tank 1 is inserted into the guide hole 101 of the gas supply object 10 (in other words, when the high-pressure tank 1 is in an unused state), the first valve body 424 blocks communication between the first storage hole 415 and the first communication hole 414, and the second valve body 47 blocks communication between the through hole 434 and the second storage hole 426 due to the biasing force of the spring 46, i.e., both the first valve body 424 and the second valve body 47 are in a closed valve state, thereby increasing the robustness of the second valve body 47 against gas leakage.

[0046] Furthermore, when the user inserts the high-pressure tank 1 into the guide hole 101 of the gas supply object 10, the first valve body 424 is in a state of blocking communication between the first storage hole 415 and the first communication hole 414, so the installation load of the high-pressure tank 1 is small and the connector part 43 of the high-pressure tank 1 can be more smoothly fitted to the fitted part 102 of the gas supply object 10. Therefore, the connector part 43 of the high-pressure tank 1 can be fitted to the fitted part 102 of the gas supply object 10 with a single touch, realizing a one-touch connector.

[0047] In the high-pressure tank 1 of this embodiment, gas is filled into the tank body 3 via the valve 4. For example, after opening the first valve body 424 by rotating the handle portion 423, the gas filling nozzle on the gas station side is inserted into the through-hole 434 of the connector portion 43 of the valve 4, and the second valve body 47 is pushed open by the filling pressure to fill the gas.

[0048] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various design modifications can be made without departing from the spirit of the present invention as set forth in the claims. [Explanation of symbols]

[0049] 1: High-pressure tank, 2: Case, 3: Tank body, 4: Valve, 5: Handle, 6: Support, 7: Safety valve body, 8: Mounting member, 9: Safety valve, 10: Gas supply object, 21: Case opening, 31: Liner, 32: First fiber-reinforced resin layer, 33: Second fiber-reinforced resin layer, 34, 35: Cap portion, 41: First body, 42: Second body, 43: Connector portion, 44, 45: O-ring, 46: Spring, 47: Second valve body, 101: Guide hole, 102: Fitting portion, 103: Plug portion, 104: Handle receiving groove , 105: push pin, 106: storage hole, 341: nozzle body, 342: flange, 343: female screw portion, 411: insertion portion, 412: flange portion, 413: male screw portion, 414: first communication hole, 415: first storage hole, 416: step portion, 417: female screw portion, 421: insertion portion, 422: exposed portion, 423: handle portion, 424: first valve body, 425: second communication hole, 426: second storage hole, 427: step portion, 428, 429: male screw portion, 431: receiving portion, 432: screw-engagement portion, 433: female screw portion, 434: through hole

Claims

[Claim 1] A high-pressure tank comprising: a tank body that stores gas; a valve attached to the tank body; and a handle attached to the tank body on the opposite side to the valve, The valve is a first body attached to a mouthpiece of the tank body and having a first communication hole communicating with the interior of the tank body and a first storage hole communicating with the first communication hole and having a larger diameter than the first communication hole; a second body having a second communication hole communicating with the first storage hole and a second storage hole communicating with the second communication hole and having a larger diameter than the second communication hole provided therein, and a first valve body accommodated in the first storage hole to block or allow communication between the first storage hole and the first communication hole; a connector portion connected to the second body, having a through hole formed therein that communicates with the second housing hole, and adapted to be fitted with a gas supply object to which the gas is to be supplied; a second valve body that is housed in the second housing hole, blocks communication between the through hole and the second housing hole by the biasing force of a spring, and allows communication between the through hole and the second housing hole by the pressing force of a push pin provided in the gas supply object; a handle portion that protrudes from the second body in a radial direction of the tank main body and that can be fitted into a handle receiving groove that is provided in the gas supply object when the high-pressure tank is fitted to the gas supply object via the connector portion; Equipped with A high-pressure tank characterized in that, when the handle portion is fitted into the handle receiving groove of the gas supply object, the first valve body blocks or allows communication between the first storage hole and the first communication hole in accordance with the twisting operation of the handle portion.

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