JP6757046B1 - Pressure vessel for high pressure gas storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure vessel for storing high-pressure gas. SOLUTION: The pressure vessel for high-pressure gas storage of the present invention is made of a tubular body having a predetermined diameter, and has a liner having male threaded portions formed at both ends and a joint portion formed on an outer surface and a through hole in a central portion. Is formed and is installed symmetrically at both ends of the liner so that the inner surface is in close contact with the end of the liner, and is installed between the end of the liner and the inner surface of the insert to maintain airtightness. 1 A seal member and a female threaded portion screwed into the male threaded portion are formed, and a coupling hole into which the joint portion is inserted is provided, and the insert is pressed and adhered to the end of the liner while being screwed into the male threaded portion. Includes a fastening member to be wound and a reinforcing wire that is wound so as to wrap the entire outer peripheral surface of the liner and has both ends attached to and fixed to the fastening member. [Selection diagram] Fig. 1

Description

The present invention relates to a pressure vessel for storing high-pressure gas, and more specifically, a fastening member is screwed to the outside of the liner to prevent the volume of the hollow portion from being reduced, and a separately provided screw ring is welded to the liner. By forming the threaded portion, the workability and accuracy of the threaded portion are improved, the strength of the liner is reinforced by the fastening member, and the end of the reinforcing wire wound around the liner is welded to the fastening member. The present invention relates to a pressure vessel for storing high-pressure gas, which can prevent deterioration of the liner by fixing the liner.

As industrialization progresses rapidly and fossil fuel consumption increases exponentially, environmental pollution has emerged as a serious social problem, so in the world corner countries, automobile exhaust, which is considered to be the main cause of environmental pollution Many efforts are being made to reduce gas.

As an example, hydrogen fuel has been developed as a clean fuel to replace the conventional automobile fuels such as gasoline and light oil.

Hydrogen fuel is not only the second most abundant element on earth after carbon and nitrogen, but also a clean energy source that produces only trace amounts of nitrogen oxides during combustion and emits no other pollutants. It can be made from almost infinite amount of water existing on the earth, and after use, it is recirculated to water again, so it is an optimal energy source with almost no risk of depletion.

Therefore, hydrogen fuel is attracting attention as a next-generation fuel that can solve various problems such as resource depletion and environmental pollution that are currently facing, and hydrogen is utilized in the automobile fuel field, industrial bodies, and general households. Various studies are being actively conducted for this purpose.

On the other hand, in order to commercialize hydrogen as an energy source, the construction of a hydrogen station should be prioritized, and for that purpose, high-pressure hydrogen can be efficiently stored together with a compressor that compresses hydrogen at high pressure. Development of a pressure vessel for hydrogen storage is required.

The container for hydrogen storage is a container that compresses hydrogen gas at high pressure and stores it, and the internal gas is exposed to the environment of -40 ° C and 85 ° C during charging and discharging for 30 years. It is a component that must ensure durability at least 10,000 times according to the target life.

Pressure vessels for storing high-pressure gas are classified into four types such as Type-1, Type-2, Type-3, and Type-4 according to the method of strengthening the material used and the composite material, and are used for transportation tube trailers and hydrogen stations. It is used for mounting on hydrogen electric vehicles.

The Type-3 and Type-4 methods have the characteristic of being lighter by using a carbon material, and are suitable for vehicles due to the weight directly linked to fuel consumption, but have the disadvantage of high manufacturing cost.

As a result, there is no problem due to weight, and on the ground where large-capacity storage is required, the storage problem is mainly solved by the Type-1 and Type 2 methods. The Type-2 method uses a liner made of metal material and glass. It is wound with a reinforcing material impregnated with fiber or carbon fiber in resin, and not only can the storage pressure be increased, but it is also lighter in weight than the Type-1 method made of metal, so it is installed on the ground. It is preferred as a large-capacity pressure vessel for use.

On the other hand, as described above, the pressure vessel for storing high-pressure gas is used to fill the inside with high-pressure gas and to install various accessory devices such as gauges for measuring pressure or residual gas capacity. A female threaded portion is formed on the inner peripheral surface of the liner of the pressure vessel so that the cap with the male threaded portion is screwed into the female threaded portion, but an airtight packing is interposed to prevent gas leakage at the threaded portion.

However, in the conventional large-capacity pressure vessel, the cap screwed into the female thread portion formed at the end of the liner is screwed in the hollow portion of the liner filled with gas. There is a drawback that the cap occupies a considerable part of the space of the hollow portion and the volume of the hollow portion for gas storage is reduced.

In addition, when the cap is excessively tightened in order to increase the sealing force of both ends of the liner by screwing the cap, the inner diameter of both ends of the liner is expanded by the tightening pressure of the cap, and the female screw of the liner and the male screw of the cap There is a drawback that the possibility of gas leakage increases due to the occurrence of a gap between the two.

In addition, in the case of a large-capacity pressure vessel, the length reaches several meters, and in the case of a large capacity, it may exceed 10 m, so the length is very long, and a female screw portion is formed on the inner peripheral surface of one end. Has the disadvantage that it is difficult to handle a long pressure vessel and it is difficult to precisely machine the female thread portion. Further, in the Type-2 type pressure vessel, a reinforcing wire made of a metal material is wound around the outside of the liner for strength reinforcement, but in order to fix both ends of the reinforcing wire wound in this way. Has the disadvantage that the reinforcing wire must be welded to the liner of the pressure vessel and fixed, which increases the risk of gas leakage due to deterioration of the pressure vessel due to the high temperature heating applied to the pressure vessel during welding. There is also.

Korean Patent No. 10-0804789

The pressure vessel for storing high-pressure gas of the present invention was made in order to solve the above-mentioned problems of the prior art, and the gas is released by forming a male screw portion on the outer peripheral surface of the liner and screwing the fastening member. The purpose is to minimize the volume reduction of the hollow portion to be filled.

Another object of the present invention is to improve the workability and accuracy of the threaded portion by welding a screw ring provided separately from the liner to the liner and integrating them.

Another object of the present invention is to reinforce the strength of the liner by a fastening member screwed into the liner.

Another object of the present invention is to prevent deterioration of the liner by welding and fixing the end portion of the reinforcing wire wound around the outer peripheral surface of the liner to the fastening member.

Further, the reinforcing wire wound around the outer peripheral surface of the liner is supported by fastening members screwed to both ends of the liner so that the wound state of the reinforcing wire is stably maintained. The purpose is.

The pressure vessel for high-pressure gas storage of the present invention is made to solve the above-mentioned problems of the prior art, and by providing a leak detecting means, it is possible to detect a gas leak quickly and easily. The purpose is to be able to.

In order to achieve the above object, the pressure vessel for high pressure gas storage of the present invention
A liner consisting of a tube body of a predetermined diameter and with male threads formed at both ends,
An insert with a joint formed on the outer surface, a through hole formed in the center, and symmetrically installed at both ends of the liner so that the inner surface is in close contact with the end of the liner.
A first seal member installed between the end of the liner and the inner surface of the insert to maintain airtightness,
A fastening member that forms a female threaded portion to be screwed into the male threaded portion, has a coupling hole into which the joint portion is inserted, and presses and adheres the insert to the end of the liner while being screwed into the male threaded portion.
It includes a reinforcing wire that is wound so as to wrap the entire outer peripheral surface of the liner, and both ends thereof are attached to and fixed to the fastening member.

The male threaded portion is formed on the outer peripheral surface of a threaded ring provided independently of the liner, and the threaded ring is welded to an end portion of the liner to be integrated.

The fastening member is further provided with an annular covering portion that protrudes outward from the female screw portion by a predetermined length and wraps the outer peripheral surface of the liner.

The fastening member is further provided with an insertion groove in which the end portion of the reinforcing wire is inserted and welded to the inner end portion.

A second seal member having a diameter larger than that of the first seal member is further provided between the end portion of the liner and the inner surface of the insert.

The insert is formed with a leak guide hole penetrating from the inner surface to the outer surface, the inner inlet of the leak guide hole is located between the first seal member and the second seal member, and the gas is at the outer outlet of the leak guide hole. It is characterized in that a leak detecting means is installed.

The gas leak detecting means is characterized by including a discoloration display unit that changes color in response to gas leaking through the leak guide hole.

The gas leak detecting means is characterized by including a pressure detecting unit that detects the pressure of the gas leaking through the leak guiding hole.

The gas leak detecting means is
A gas detector that detects gas leaking through the leak guide hole,
A wireless transmitter that transmits a notification signal due to leakage detection of the gas detector,
A wireless receiver that receives the signal transmitted by the wireless transmitter, and
It is characterized by including a notification unit that is output by audiovisual means in response to a signal received by the wireless reception unit.

The pressure vessel for high-pressure gas storage of the present invention has an effect of minimizing the volume reduction of the hollow portion filled with gas by forming a male screw portion on the outer peripheral surface of the liner and screwing the fastening member. ..

Further, by welding a screw ring provided separately from the liner to the liner and integrating it, there is an effect that the workability and accuracy of the screw portion can be improved.

Further, the fastening member screwed into the liner wraps the outer peripheral surfaces of both ends of the liner, which has the effect of reinforcing the strength of the liner.

Further, by welding and fixing the end portion of the reinforcing wire wound around the outer peripheral surface of the liner to the fastening member, there is an effect that deterioration of the liner can be prevented.

Further, the reinforcing wire wound around the outer peripheral surface of the liner is supported by the fastening members screwed to both ends of the liner, so that the wound state of the reinforcing wire is stably maintained. There is an effect that the increased strength of the liner due to the reinforcing wire is stably maintained.

Further, by providing the leak detecting means, there is an effect that the gas leak can be detected quickly and easily.

It is a perspective view which concerns on embodiment of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of one end part which concerns on embodiment of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of the one end part which shows another embodiment of the thread part of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of one end part which shows another installation state of the 1st seal member of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of one end part which shows another Embodiment of the fastening member of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of one end part which shows the 2nd seal member, the leak guide hole and the gas leak detection means of the pressure vessel for high pressure gas storage of this invention. It is sectional drawing of the one end part which shows the 2nd seal member of the pressure vessel for high pressure gas storage of this invention, and another embodiment of a leak guide hole. It is sectional drawing of one end part which shows another embodiment of the gas leak detection means of the pressure vessel for high pressure gas storage of this invention.

Hereinafter, the pressure vessel for storing high-pressure gas of the present invention will be described in detail based on the embodiment of the present invention, and the technique of the present invention will be limited to the embodiment described in this document. It should be understood that it includes various modifications, equals, and / or alternatives of embodiments of the present invention.

At the same time, in explaining the embodiment of the present invention, even if the action and effect according to the configuration of the present invention are not explicitly described and explained, a predictable effect must be recognized by the configuration. Is natural.

FIG. 1 is a perspective view according to an embodiment of the high pressure gas storage pressure vessel of the present invention, FIG. 2 is a sectional view of one end of the high pressure gas storage pressure vessel of the present invention, and FIG. 3 is a high pressure vessel of the present invention. A cross-sectional view of one end showing another embodiment of the threaded portion of the gas storage pressure vessel, FIG. 4 is a cross-sectional view of one end showing another installation state of the first seal member 30 of the high pressure gas storage pressure vessel of the present invention. It is a figure.

First, it will be described with reference to FIGS. 1 to 4.
The pressure vessel for high pressure gas storage of the present invention includes a liner 10, an insert 20, a first seal member 30, a fastening member 40, and a reinforcing wire 50.

The liner 10 is made of a metal tube having a predetermined diameter and has a hollow portion 101 filled with high-pressure gas, but it is preferably formed with the same thickness and the same diameter along the length direction.
The fastening member 40 is screwed by forming male screw portions 102 on the outer peripheral surfaces of both end portions of the liner 10.

The male threaded portion 102 of the liner 10 is formed on the outer peripheral surface of the threaded ring 104 provided independently of the liner 10. The screw ring 104 can be welded to the end of the liner 10 and integrated.

Therefore, the male threads are not directly machined on the outer peripheral surfaces of both ends of the liner 10 having a length of several meters, but the male threads 102 are formed on the outer peripheral surface of a separate thread ring 104 having a short length. Since the male threaded portion 102 is tightly fitted to both ends and then welded to be integrated, the workability and accuracy of the male threaded portion 102 can be improved.

The insert 20 is symmetrically installed so as to be in close contact with both ends of the liner 10, but includes a joint 201 and a through hole 202.

The insert 20 is closely fixed to both ends of the liner 10 by the fastening member 40, so that the hollow portion 101 of the liner 10 is sealed by the insert 20.
The connecting portion 201 is projected outward from the center of the outer surface of the insert 20 and is coupled to the fastening member 40.

The through hole 202 is formed in the central portion of the insert 20, but is formed so as to penetrate from the inner surface of the insert 20 to the outer surface of the joint portion 201. At this time, it is preferable to form a screw thread at the outer outlet of the through hole 202 so that the piping equipment P for filling the hollow portion 101 of the liner 10 with the high-pressure gas can be connected.

The first seal member 30 is installed between the end of the liner 10 and the inner surface of the insert 20 to maintain the airtightness of the hollow portion 101.

For stable installation of the first seal member 30, as shown in FIG. 2, a recessed first installation groove 103 is formed at the inner peripheral surface corner portion of the end portion of the liner 10, and the first installation is performed. It is preferable to insert the first seal member 30 inside the groove 103.

Further, as shown in FIG. 4, the first seal member 30 can be inserted into the inside of the second installation groove 203 by forming a recessed second installation groove 203 on the inner surface of the insert 20. is there.

The first seal member 30 installed as described above is installed in an annular shape so as to be interposed between the end portion of the liner 10 and the inner surface of the insert 20, and the airtightness is maintained by elastic contact. This prevents gas leakage from occurring between the outer surface of the liner 10 and the inner surface of the insert 20.

The first seal member 30 preferably uses an O-ring made of elastically deformable rubber or a synthetic rubber material, but the present invention is not limited to this, and an O-ring made of a metal material is used. Can be done.

The fastening member 40 includes a female screw portion 401 and a coupling hole 402.

The female threaded portion 401 is screwed into the male threaded portion 102 of the liner 10.

The coupling portion 201 of the insert 20 is inserted into the coupling hole 402.

Therefore, when the female threaded portion 401 is screwed into the male threaded portion 102 of the liner 10, the joint portion 201 of the insert 20 is inserted into the coupling hole 402 of the fastening member 40, thereby being screwed into the liner 10. The inner surface of the insert 20 is consolidated with the end of the liner 10 while the center of the fastening member 40 and the insert 20 coincides with the center of the liner 10.
Further, by tightening the fastening member 40, the distance between the end portion of the liner 10 and the inner surface of the insert 20 becomes closer while the insert 20 is consolidated in the direction of the liner 10, whereby the liner 10 and the insert 20 The first seal member 30 interposed between the two seal members 30 is in close contact with each other to improve the airtightness.

Further, since the fastening member 40 is screwed so as to wrap the end portion of the liner 10 from the outside, the end portion of the liner 10 may expand outward in the fastening process of the fastening member 40, or the liner 10 and the fastening member 40 may be screwed together. It is possible to prevent gas from leaking due to a gap between the gas and the gas.
As described above, the fastening member 40 is manufactured independently of the insert 20 and screwed into the liner 10, so that the convenience of fastening can be enhanced.

The fastening member 40 may further include an annular covering portion 403 that protrudes outward from the female screw portion 401 by a predetermined length and wraps the outer peripheral surface of the liner 10.
Therefore, when the female threaded portion 401 of the fastening member 40 is screwed into the male threaded portion 102, the covering portion 403 is in contact with the inner outer peripheral surface of the male threaded portion 102 of the liner 10 so that the male threaded portion 102 is not exposed to the outside. By covering with, it is possible to prevent the reinforcing wire 50 from being unevenly laminated while the reinforcing wire 50 is wound around the male screw portion 102.

On the other hand, by making the length of the female threaded portion 401 even longer than the length of the male threaded portion 102, the male threaded portion 102 is not exposed to the outside when the fastening member 40 is screwed into the liner 10. The reinforcing wire 50 is wound around the male screw portion 102 to prevent the reinforcing wire 50 from being unevenly laminated.

Further, the female threaded portion 401 of the fastening member 40 is screwed into the entire male threaded portion 102 of the liner 10 whose thickness is reduced and the strength is lowered by processing the male threaded portion 102, so that the fastening member 40 is lined up. The strength of the male threaded portion 102 of 10 is reinforced.

The cross-sectional shape of the fastening member 40 may be circular or polygonal.

When the cross section of the fastening member 40 is formed in a polygonal shape, it is possible to prevent an unintended rolling motion even if it is arranged on the floor.

By adopting a structure in which the fastening member 40 is connected to the liner 10 by a screw method, a sufficient opening space for maintenance is secured, and attachment / detachment is easy, which improves the convenience of maintenance. Not only that, it is easy to process and manufacture using a general machine tool, and the convenience of manufacturing is improved.

The reinforcing wire 50 is wound so as to wrap the entire outer peripheral surface of the liner 10, but the strength of the liner 10 is reinforced by attaching and fixing both ends of the reinforcing wire 50 to the fastening member 40. ..

That is, the reinforcing wire 50 is wound so as to wrap the entire outer peripheral surface of the liner 10 in order to support the hoop stress applied to the liner 10 by the high-pressure gas filled in the hollow portion 101 of the liner 10. ..

The material of the reinforcing wire 50 is preferably a metal material, but the material is not limited to this, and a material made of carbon fiber, glass fiber, or the like may be used.
Further, the diameter of the reinforcing wire 50 is not limited, but when the diameter of the reinforcing wire 50 is large, the gap between the reinforcing wires 50 wound around the liner 10 becomes large and the internal pressure cannot be sufficiently supported. Instead, a relatively large amount of power is applied during winding.

Therefore, it is advantageous to use a reinforcing wire 50 having a small diameter from the viewpoint of reducing the gap between the reinforcing wires 50 and from the viewpoint of winding power.

The diameter of the reinforcing wire 50 is preferably in the range of 0.005 mm to 2.5 mm.

On the other hand, the reinforcing wire 50 is wound around the outer peripheral surface of the liner 10 between the fastening members 40 screwed to both ends of the liner 10, and both ends thereof are fixed to the fastening members 40 to fasten the reinforcing wire 50. The member 40 supports the side surface of the reinforcing wire 50 so that the winding structure of the reinforcing wire 50 wound around the outer peripheral surface of the liner 10 is maintained.

Therefore, the distance from the center of the fastening member 40 to the outer peripheral surface of the fastening member 40 is larger than the distance from the center of the liner 10 to the outer surface of the outermost reinforcing wire 50 wound and laminated by the liner 10. By doing so, it is preferable that the reinforcing wire 50 can be prevented from coming into contact with the ground or being damaged by a collision with an external object.
On the other hand, in order to prevent the reinforcing wire 50 wound around the liner 10 from being unwound, both ends of the reinforcing wire 50 are attached to and fixed to the fastening member 40, but soldered or welded according to the material of the reinforcing wire 50. Can be fixed.

Conventionally, when the reinforcing wire 50 is welded to the liner 10, the welding rod and the liner 10 are simultaneously melted and welded while being exposed to a high temperature. At this time, the welded portion of the liner 10 is damaged by heat and becomes fragile in terms of strength.

Therefore, by attaching and fixing both ends of the reinforcing wire 50 to the fastening member 40, thermal damage directly applied to the liner 10 can be minimized.

FIG. 5 is a cross-sectional view of one end showing another embodiment of the fastening member of the pressure vessel for storing high-pressure gas of the present invention.

Next, it will be described with reference to FIG.
The inner end of the fastening member 40 may further be provided with an insertion groove 404 into which the end of the reinforcing wire 50 is inserted and welded.

At this time, the insertion groove 404 can be formed in a straight line shape, a zigzag shape, or a right angle shape.

Therefore, by fixing the reinforcing wire 50 by soldering or welding with the end portion of the reinforcing wire 50 inserted in the insertion groove 404, the fixing of the reinforcing wire 50 becomes stronger.

FIG. 6 is a cross-sectional view of one end showing a second seal member, a leak guide hole and a gas leak detecting means of the high pressure gas storage pressure vessel of the present invention, and FIG. 7 is a second seal of the high pressure gas storage pressure vessel of the present invention. FIG. 8 is a cross-sectional view of one end showing another embodiment of the member and the leak guide hole, and FIG. 8 is a cross-sectional view of one end showing another embodiment of the gas leak detecting means of the pressure vessel for storing high-pressure gas of the present invention.

Next, it will be described with reference to FIGS. 6 to 8.
A second seal member 31 having a diameter even larger than that of the first seal member 30 can be further provided between the end of the liner 10 and the inner surface of the insert 20.

That is, it is preferable that an annular third installation groove 105 is formed at the end of the liner 10, and the second seal member 31 is inserted inside the third installation groove 105.

Further, the second seal member 31 can be inserted into the inner surface of the insert 20 by forming an annular fourth installation groove 204.

The second seal member 31 is interposed between the end of the liner 10 and the inner surface of the insert 20, but is installed outside the first seal member 30 with a diameter even larger than that of the first seal member 30. As a result, the airtightness of the gas leaked from the first seal member 30 is maintained.

Similar to the first seal member 30, the second seal member 31 preferably uses an O-ring made of elastically deformable rubber or synthetic rubber material, but is not limited to this, and is not limited to this. You may use an O-ring made of.

The insert 20 may be further provided with a leak guide hole 205.
The leak guide hole 205 is formed so as to penetrate from the inner surface to the outer surface, and the inner inlet of the leak guide hole 205 is located between the first seal member 30 and the second seal member 31, and the leak guide hole 205 is formed. A gas leak detecting means 60 is installed at the outer outlet of the 205.

It is preferable to form a screw thread at the outer outlet of the leak guide hole 205 so that the gas leak detecting means 60 can be easily installed.

Therefore, when gas leaks from the first seal member 30, the leaked gas does not leak from between the end of the liner 10 and the inner surface of the insert 20 by the second seal member 31, and passes through the leak guide hole 205. It is discharged.

At this time, the gas leak detecting means 60 installed at the outer end of the leak guiding hole 205 immediately detects the gas leak, so that the gas leak can be quickly dealt with.

At the same time, even if gas leaks at any of the first seal members 30, the leaked gas is guided to be discharged through the leak guide hole 205 by the second seal member 31, so that more accurate leak detection is performed. Can be done.

As shown in FIG. 6, the gas leak detecting means 60 can include a discoloration display unit 601 that changes color in response to the gas leaking from the first seal member 30.

Since the discoloration display unit 601 is discolored through the reaction with the leaked gas, the presence or absence of gas leakage can be quickly and easily confirmed from the confirmation of the presence or absence of discoloration.

In particular, in the case of dangerous gas that has a risk of explosion when leaking, such as hydrogen charged at high pressure, the administrator can visually check the discoloration display unit 601 without operating a separate device to check for gas leaks. Since it is possible to confirm the presence or absence of a gas leak, there is an advantage that prompt safety measures such as ventilation and access restriction of flammable fire can be taken in the event of a gas leak.

On the other hand, the discoloration display unit 601 selectively configures various substances that cause chemical discoloration according to the type of gas filled in the pressure vessel for storing high-pressure gas of the present invention, thereby various types. Can cope with gas leaks.

Further, as shown in FIG. 7, the gas leak detecting means 60 can include a pressure detecting unit 602 that detects the pressure of the gas leaking from the first seal member 30.

It is clarified in advance that the pressure detection unit 602 preferably uses a pressure sensor that detects a change in pressure, but is not limited thereto.

When a pressure sensor is used as the pressure detector 602, not only can the presence or absence of a gas leak be quickly and easily confirmed by detecting a pressure change due to a minute gas leak, but also the price of the pressure sensor is very low, so the leaked gas It has the advantage of being economically efficient due to detection.

As shown in FIG. 8, the gas leak detecting means 60 can include a gas detecting unit 603, a wireless transmitting unit 604, a wireless receiving unit 605, and a notification unit 606.

The gas detection unit 603 detects the gas leaking through the leak guide hole 205.
At this time, the method of detecting the leaking gas is not limited, but a discoloration display means that changes the color in response to the gas depending on the type of gas is used, or a pressure that detects the pressure that changes when the gas leaks. Detection means can be used.

The wireless transmission unit 604 transmits a notification signal due to leakage detection of the gas detection unit 603. At this time, it is preferable that the notification signal includes an identification code for classifying the pressure vessel for storing high-pressure gas.

Further, it is preferable that the wireless transmission unit 604 uses ordinary short-range wireless communication means, and it is natural that the wireless transmission unit 604 includes a replaceable battery for the operation of the wireless transmission unit 604.

The wireless receiving unit 605 is installed so as to be separated from the high-pressure gas storage pressure vessel of the present invention by a predetermined distance, and the wireless communication unit can receive a wireless signal transmitted to the wireless transmitting unit 604. It is preferable to use the same communication standard as.

The notification unit 606 outputs the signal received by the wireless reception unit 605 by an audiovisual means such as a buzzer or a warning light so that the administrator can immediately recognize the presence or absence of a gas leak. Can be done.

1 High-pressure gas storage pressure vessel 10 Liner 101 Hollow part 102 Male thread part 103 First installation groove 104 Thread ring 105 Third installation groove 20 Insert 201 Joint part 202 Through hole 203 Second installation groove 204 Fourth installation groove 205 Leakage guide hole 30 1st seal member 31 2nd seal member 40 Fastening member 401 Female thread part 402 Coupling hole 403 Covering part 404 Insertion groove 50 Reinforcing wire 60 Gas leak detection means 601 Discoloration display part 602 Pressure detection part 603 Gas detection part 604 Radio transmission part 605 Wireless receiver 606 Notification section

Claims (9)

A liner consisting of a tube body of a predetermined diameter and with male threads formed at both ends,
An insert that has a joint formed on the outer surface, a through hole formed in the central portion, and is symmetrically installed at both ends of the liner so that the inner surface is in close contact with the end portion of the liner.
A first seal member installed between the end of the liner and the inner surface of the insert to maintain airtightness.
A fastening member that forms a female threaded portion to be screwed into the male threaded portion, has a coupling hole into which the joint portion is inserted, and presses and adheres the insert to the end of the liner while being screwed into the male threaded portion.
A pressure vessel for storing high-pressure gas, which comprises a reinforcing wire which is wound so as to wrap the entire outer peripheral surface of the liner and whose both ends are attached to and fixed to the fastening member. The male threaded portion
The high-pressure gas storage pressure according to claim 1, wherein the screw ring is formed on an outer peripheral surface of a screw ring provided independently of the liner, and the screw ring is welded to an end portion of the liner to be integrated. container. The fastening member
The pressure vessel for storing high-pressure gas according to claim 1, further comprising an annular covering portion that protrudes outward from the female screw portion by a predetermined length and wraps the outer peripheral surface of the liner. The pressure vessel for high-pressure gas storage according to claim 1, wherein the fastening member further includes an insertion groove in which the end portion of the reinforcing wire is inserted and welded to the inner end portion. The high-pressure gas storage according to claim 1, further comprising a second seal member having a diameter even larger than that of the first seal member between the end portion of the liner and the inner surface of the insert. For pressure vessel. The insert is
A leak guide hole is formed that penetrates from the inner surface to the outer surface.
The inner inlet of the leak guide hole is located between the first seal member and the second seal member.
The pressure vessel for high-pressure gas storage according to claim 5, wherein a gas leak detecting means is installed at the outer outlet of the leak guide hole. The pressure vessel for high-pressure gas storage according to claim 6, wherein the gas leak detecting means includes a discoloration display unit that changes color in response to gas leaking through the leak guide hole. The pressure vessel for storing high-pressure gas according to claim 6, wherein the gas leak detecting means includes a pressure detecting unit that detects the pressure of the gas leaking through the leak guiding hole. The gas leak detecting means is
A gas detector that detects gas leaking through the leak guide hole,
A wireless transmitter that transmits a notification signal due to leakage detection of the gas detector,
A wireless receiver that receives the signal transmitted by the wireless transmitter, and
The pressure vessel for high-pressure gas storage according to claim 6, further comprising a notification unit that is output by audiovisual means in response to a signal received by the wireless reception unit.

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