JP2004100742A - Portable gas charger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable gas charger having superior workability in feeding gas and having no problem in a maintenance cost. <P>SOLUTION: This portable gas charger 1 is used for supplying gas to a gas supply object and is provided with a cylinder 11 to be filled with gas, a portable storage case 12 for storing the cylinder 11, a filling part 13 for filling the cylinder 11 with gas to be fed from an external gas supply source, an emission part 14 for emitting the gas from the cylinder 11 to the outside, and an adjustment part 15 connected between the cylinder 11 and the delivery part 14 and adjusting the gas pressure of the cylinder 11. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable gas charger used for replenishing gas to a gas replenishment object.
[0002]
[Background]
Conventionally, replenishment of gas such as nitrogen gas to airplane tires, accumulators, shock absorbers and the like has been performed. With regard to this gas replenishment, for example, airplane tires are large, so that the amount of gas to be replenished is generally large.
For this reason, in order to replenish gas, a trailer or the like equipped with a gas cylinder having a large capacity is laid on the plane to replenish nitrogen gas (1).
[0003]
[Problems to be solved by the invention]
However, in the above method (1), the trailer has to be moved while paying attention to the location of the gas supply every time the replenishment operation is changed. There is a problem of being bad.
In addition, when there is a distance between the gas supply nozzle and the aircraft gas supply port, the pressure adjustment is performed at a position that is at a distance from the aircraft gas supply port. There is a problem that workability is poor because gas pressure adjustment and gas supply are performed by talking to each other.
[0004]
In order to solve the problem due to the replenishing method of (1) above, it is also conceivable to perform gas filling using a small cylinder (2). Specifically, it is conceivable to develop a small cylinder by improving a medical oxygen cylinder for installation in an ambulance.
However, in the above method (2), even if a small cylinder is used, if the internal gas is exhausted, it must be refilled with a gas supply device at another location. There was a problem in maintenance cost.
[0005]
An object of the present invention is to provide a portable gas charger having good gas supply workability and no problem in maintenance cost.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a portable gas charger according to the present invention is a portable gas charger used to replenish a gas to a gas replenishment target, in which a cylinder filled with gas is stored. A portable storage case, an injection part for injecting gas supplied from an external gas supply source into the cylinder, an emission part for releasing gas out of the cylinder, the cylinder and the emission And an adjusting unit that adjusts the gas pressure of the cylinder.
[0007]
According to the present invention, since a cylinder filled with gas is stored and a portable storage case is provided, it is easy for an operator to carry the portable gas charger. There is no need to consider the placement location as when using a trailer with a gas cylinder. Therefore, workability can be improved.
In addition, by providing an injection part for injecting gas supplied from an external gas supply source into the cylinder, the cylinder can be refilled with gas at the place of use. Therefore, since the cylinder is not disposable, it is possible to provide a portable gas charger with no problem in maintenance cost.
[0008]
In the portable gas charger according to the present invention, it is preferable that the portable gas charger includes a measuring unit that is connected to the adjusting unit and measures a gas pressure of the cylinder.
According to this, since the gas can be released at a predetermined pressure by being connected to the adjustment unit and measuring the gas pressure of the cylinder, the gas can be reliably replenished to the object to be replenished. Can do.
[0009]
In the portable gas charger of the present invention, it is preferable that the cylinder includes a main body made of fiber reinforced plastic.
Here, examples of the plastic of fiber reinforced plastic (FRP, an abbreviation of Fiber-Reinforced Plastics) include nylon, polyester, and epoxy.
Examples of the fiber reinforced plastic fiber include fibers such as boron, silicon carbide, alumina, carbon, aramid, and steel in addition to glass.
According to this, since the cylinder is provided with a main body made of fiber reinforced plastic, fiber reinforced plastic is lighter and stronger than conventional metals, so it is portable and requires strength. It is suitable as a material for the cylinder of the mold gas charger.
[0010]
In the portable gas charger according to the present invention, it is preferable that the injection part and the discharge part are stored in the storage case.
According to this, the injection part and the discharge part do not appear on the surface outside the storage case by being stored inside the storage case. Therefore, the mechanism or device provided with the gas replenishment target such as an airplane does not hit the injection part or the discharge part and cause scratches or the like.
[0011]
The portable gas charger of the present invention is a portable gas charger used for replenishing gas to a gas replenishment target, and is connected to the other end of a hose whose one end is connected to a gas supply source for supplying gas. The injection part to be adjusted, the adjustment part for adjusting the gas pressure of the gas, the discharge part for releasing the gas whose gas pressure is adjusted, the injection part, the adjustment part and the discharge part are housed and portable It is characterized by having a storage case.
[0012]
According to this, since the operator can easily carry the portable gas charger by providing the portable storage case, the work of replenishing the gas to the gas replenishment target can be improved.
In addition, by providing an adjustment unit that adjusts the gas pressure of the gas, the gas pressure can be adjusted at the operator's hand even if the operator is away from the gas supply source, thereby improving workability. be able to.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 shows an outline of a portable gas charger 1 according to the first embodiment of the present invention. 2 is a plan view of the portable gas charger 1 according to the present embodiment, FIG. 3 is a cross-sectional view of the portable gas charger 1 viewed from the long side direction, and FIG. Cross sections viewed from the short side direction of the gas charger 1 are respectively shown. 2 to 4, illustrations of piping and the like for connecting the components are omitted.
Further, FIG. 5 shows a perspective view of the portable gas charger 1 according to the present embodiment.
[0014]
As shown in FIG. 1, the portable gas charger 1 is a portable gas charger used for replenishing a gas to be replenished with a gas cylinder 11, a storage case 12, An injection part 13 for injecting gas from the gas tank carrier to the cylinder 11, a discharge part 14 for releasing gas from the cylinder 11, a first pipe A connecting between the cylinder 11 and the release part 14, A second pipe B branched from the first pipe A and connected to the cylinder 11, an adjustment unit 15 provided in the first pipe A, a measurement unit 16 connected to the adjustment unit 15, a gate valve 17, A safety valve 18 and a gate valve 19 are provided.
[0015]
Although not shown, the cylinder 11 has a tubular shape in cross-sectional view, and includes a core portion made of an aluminum alloy, and a main body that covers the outer periphery of the core portion and is made of fiber-reinforced plastic. In this fiber reinforced plastic, nylon is used as the plastic and glass fiber is used as the fiber. In this embodiment, the gas used is nitrogen gas, and the capacity is about 2 liters. The weight of the cylinder 11 is about 1 kg, and the normal pressure is about 14.7 MPa.
[0016]
As shown in FIGS. 2 to 4, the storage case 12 includes a cylinder 11, an injection part 13, a discharge part 14, a first pipe A, a second pipe B, an adjustment part 15, a measurement part 16, a gate valve 17, a safety valve. 18 and the gate valve 19 are housed and portable, and includes a case main body 121 and a case lid 122. The case main body 121 and the case lid 122 can be opened and closed with a hinge structure.
[0017]
In the present embodiment, the case body 121 has a height dimension of 150 mm, a width dimension (short side direction) of 236 mm, and a length dimension (long side direction) of 486 mm. The height dimension of the case lid 122 is 80 mm. The width and length of the case lid 122 are the same as those of the case main body 121.
[0018]
The case body 121 includes a rectangular bottom surface portion 121A, a side surface portion 121B that is integrally formed by rising from the bottom surface portion 121A, and an opening portion 121C that is opposite to the bottom surface portion 121A of the side surface portion 121B. It is configured.
[0019]
A fixed plate 123 and a mounting table 124 are fixed inside the case main body 121.
The fixing plate 123 is a thin plate-like member that is fixed to the opening 121C side of the case main body 121 and covers the length of about two-fifths of the short side direction along the long side direction.
2 and 3, from the left side in FIGS. 2 and 3, the injection unit 13, the gate valve 17, the measurement unit 16 (primary measurement meter 161 described later), the adjustment unit 15, and the measurement unit 16 (secondary measurement meter 162 described later). , And the discharge portion 14 are fixed.
[0020]
The mounting table 124 is fixed to a recess (not shown) on the bottom surface 121 </ b> A side of the case body 121, and is composed of an elastic member such as a sponge having a length substantially the same as the length of the cylinder 11. Two fixing belts 125 for fixing the cylinder 11 are attached to the mounting table 124.
[0021]
As shown in FIG. 5, attachment portions 121 </ b> D are provided on the outer peripheral surfaces of the side portions 121 </ b> B facing each other on the short side. The attachment portion 121D is a U-shaped metal fitting. A shoulder belt 121E is attached to the pair of attachment portions 121D described above, and spans between the pair of attachment portions 121D.
[0022]
On the other hand, as shown in FIGS. 2 to 4, the case lid 122 includes a rectangular bottom surface 122 </ b> A, a side surface 122 </ b> B that is integrally formed by rising from the bottom surface 122 </ b> A, and a bottom surface of the side surface 122 </ b> B. An opening 122C opposite to 122A is provided.
The height of the side surface portion 122B of the case lid 122 is smaller than the height of the side surface portion 121B of the case main body 121. The shape and size of the opening 122C of the case lid 122 correspond to the shape and size of the opening 121C of the case body 121.
As shown in FIG. 5, two fixing belts 122 </ b> D for fixing a filling nozzle 20 described later are attached to the inside of the case lid 122.
[0023]
As shown in FIGS. 2 to 4, the injection unit 13 is a metal disk-like member for connecting to a supply hose, an adapter, or the like from a gas supply source such as a gas tank. A circular injection hole 13 </ b> A is formed in the central portion of the injection part 13. The discharge part 14 is for connecting to a filling nozzle 20 (described later) used to discharge gas from the cylinder 11 to the outside, and is a metal disk-like member. A circular discharge hole 14 </ b> A is formed in the central portion of the discharge portion 14.
The first pipe A and the second pipe B are metal pipes.
[0024]
The adjusting unit 15 is a pressure reducing valve, and adjusts the gas pressure at the time of discharge by lowering the gas pressure in the cylinder 11. A work lever 151 is attached to the upper part of the adjustment unit 15. The work lever 151 is freely attachable / detachable to / from the adjusting portion 15.
[0025]
The measuring unit 16 measures the gas pressure in the cylinder 11 and includes a primary measurement meter 161 and a secondary measurement meter 162. The primary measurement meter 161 is connected to the cylinder 11 side of the adjustment unit 15 and measures the pressure of the gas entering the adjustment unit 15. The secondary measurement meter 162 is connected to the discharge unit 14 side of the adjustment unit 15 and measures the pressure of the gas exiting the adjustment unit 15.
[0026]
The gate valve 17 is connected to the injection unit 13 and performs gas injection and injection stop.
The safety valve 18 and the gate valve 19 are connected to the cylinder 11. The safety valve 18 is configured so that the gas pressure inside the cylinder 11 and the first pipe A and the second pipe B does not become higher than necessary, so that the pressure inside the cylinder 11 and the first pipe A and the second pipe B are higher than the pressure set by the safety valve 18. When the internal gas pressure becomes high, this is a known safety valve having a function of automatically discharging the gas to the outside and returning the pressure to the normal limit again.
The gate valve 19 is for injecting gas into the cylinder 11 or discharging gas from the cylinder 11.
[0027]
As shown in FIG. 5, the filling nozzle 20 is housed in a case lid 122 when being housed, and includes a distal end portion 21, a nozzle body 22, a hose 23, and a connection proximal end portion 24. ing.
The distal end portion 21 has a metal disk shape and is configured to be connectable to a gas supply port of a gas replenishment target. The nozzle body 22 is a metal member. The nozzle body 22 is provided with a cock 22A. The hose 23 is made of a flexible member such as rubber. The connection base end portion 24 is a metal member and is configured to be connectable to the discharge portion 14.
[0028]
The procedure for using the portable gas charger 1 will be described below.
[Purging remaining gas and refilling cylinder 11]
With reference to FIG. 1, the purge of the remaining gas will be described. The gas used in this embodiment is nitrogen gas.
First, the gate valve 17 and the gate valve 19 are closed, and the adjustment unit 15 is closed. Next, a supply hose (not shown) from a gas supply source such as a gas tank is attached to the injection unit 13 to supply nitrogen gas. When the flow of nitrogen gas stops, the gate valve 17 is opened. When the primary measurement meter 161 stops, the adjustment unit 15 is opened. The gas remaining in the supply hose (not shown) is purged from the discharge portion 14 together with the nitrogen gas. Nitrogen gas is released for about 5 seconds, and the adjustment unit 15 is closed. The gate valve 19 is opened, and the cylinder 11 is filled with nitrogen gas. When the supply of nitrogen gas to the cylinder 11 reaches a predetermined pressure, the supply of nitrogen gas from the outside is stopped. The gate valve 17 and the gate valve 19 are closed. The adjustment unit 15 is closed. Thereafter, a supply hose (not shown) is removed from the injection part 13.
[0029]
[Replenish gas to the object to be refilled]
With reference to FIG. 1 and FIG. 6, filling of the nitrogen gas into the gas replenishment target will be described. In this embodiment, the gas replenishment object is an airplane tire (not shown).
The operator 5 carries the portable gas charger 1 supplemented with nitrogen gas to the vicinity of an airplane tire (not shown) with the shoulder belt 121E on the shoulder.
[0030]
The filling nozzle 20 accommodated in the portable gas charger 1 is taken out, and the connection base end portion 24 of the filling nozzle 20 is connected to the discharge portion 14. The tip 21 of the filling nozzle 20 is connected to a gas supply port of an airplane tire (not shown).
The gate valve 19 is opened, and nitrogen gas is released from the cylinder 11. While watching the measurement unit 16, the adjustment unit 15 adjusts the pressure of the nitrogen gas so as to be a predetermined pressure.
With the cock 22A of the filling nozzle 20, the nitrogen gas is replenished to an airplane tire (not shown) while adjusting the flow rate of the nitrogen gas.
[0031]
According to this embodiment as described above, the following effects are obtained.
(1) Since a cylinder 11 filled with gas is stored and a portable storage case 12 is provided, the operator 5 can easily carry the portable gas charger 1. There is no need to consider the location as when using the provided trailer. Therefore, workability can be improved.
[0032]
(2) By providing the injection part 13 for injecting nitrogen gas supplied from an external gas supply source into the cylinder 11, the cylinder 11 can be refilled with nitrogen gas at the place of use. Therefore, since the cylinder 11 is not disposable, the portable gas charger 1 having no problem in maintenance cost can be obtained.
[0033]
(3) Since the measuring unit 16 connected to the adjusting unit 15 and measuring the gas pressure in the cylinder 11 can release nitrogen gas at a predetermined pressure, the gas replenishment target object, not shown, Nitrogen gas can be reliably replenished to the tire.
[0034]
(4) Since the cylinder 11 includes a main body made of fiber reinforced plastic, the fiber reinforced plastic is lighter and stronger than conventional metals, so it is portable and requires strength. It is suitable as a material for the cylinder of the gas charger 1.
[0035]
(5) The injection part 13 and the discharge part 14 do not appear on the surface outside the storage case 12 by being stored inside the storage case 12. Therefore, the injection unit 13 and the discharge unit 14 do not hit the scratches or the like on the mechanism or device provided with the gas replenishment target such as an airplane.
[0036]
(6) Since the measurement unit 16 is provided on both sides of the adjustment unit 15, the measurement unit 16 can be easily viewed during the gas pressure adjustment, and therefore the adjustment of the gas pressure by the adjustment unit 15 can be easily performed.
[0037]
(7) Since the portable gas charger 1 can be transported while the shoulder belt 121E is hung on the shoulder, the transport can be performed smoothly.
[0038]
[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the following description, the same parts and members as those already described are denoted by the same reference numerals and description thereof is simplified.
In the procedure for using the portable gas charger 1 according to the first embodiment, as shown in FIG. 6, the portable gas charger 1 in which the gas has been replenished in advance to the cylinder 11 is carried to the vicinity of the tire of the airplane (not shown). The tires were refilled with nitrogen gas.
[0039]
On the other hand, in the procedure for using the portable gas charger 1 of the second embodiment, as shown in FIG. 7, a supply hose having one end connected to a gas tank carrier 6 that is a gas supply source for supplying gas. In the state where the other end of 61 is connected to the injection part 13 of the portable gas charger 1, nitrogen gas is replenished to an airplane tire (not shown).
[0040]
Specifically, it is as follows.
[Replenish gas to the object to be refilled]
With reference to FIG. 1 and FIG. 7, filling of nitrogen gas into an airplane tire will be described.
The operator 5 carries the portable gas charger 1 to the vicinity of an airplane tire (not shown) with the shoulder belt 121E on the shoulder.
Next, the supply hose 61 connected to the gas tank carrier 6 is connected to the injection part 13.
Then, the filling nozzle 20 accommodated in the portable gas charger 1 is taken out, and the connection base end portion 24 of the filling nozzle 20 is connected to the discharge portion 14. The tip 21 of the filling nozzle 20 is connected to a gas supply port of an airplane tire (not shown). Nitrogen gas is supplied from the gas tank carrier 6 to the portable gas charger 1.
Next, the gate valve 17 is opened so as to pass through the adjustment unit 15 and the discharge unit 14. While looking at the measuring unit 16, the adjustment is made by the adjusting unit 15 at hand so that the pressure of the nitrogen gas becomes a predetermined pressure. Then, the nitrogen gas is replenished to an airplane tire (not shown) while adjusting the flow rate of the nitrogen gas by the cock 22A of the filling nozzle 20.
[0042]
According to the present embodiment as described above, the following effects are obtained in addition to the effects of the first embodiment.
(8) Since the adjustment unit 15 that adjusts the gas pressure of the nitrogen gas is provided, the gas pressure of the nitrogen gas can be adjusted by the operator 5 even when the operator 5 is away from the gas tank transport vehicle 6. Therefore, workability can be improved.
[0043]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications and improvements as long as the object of the present invention can be achieved are included in the present invention.
In each of the above-described embodiments, the example of the gas replenishment object is an airplane tire, but the present invention is not limited to this, and gas may be replenished to an accumulator, a shock absorber, or the like.
In each of the above embodiments, the gas used is exemplified by nitrogen gas, but is not limited thereto, and other gases such as oxygen, carbon dioxide, helium, neon, argon, krypton, xenon, and radon are used. You may do it.
[0044]
In each of the embodiments described above, nylon is used as the fiber-reinforced plastic, but the present invention is not limited to this, and polyester, epoxy, or the like may be used.
In each of the embodiments, glass is used as the fiber of the fiber reinforced plastic. However, the present invention is not limited to this, and fibers such as boron, silicon carbide, alumina, carbon, aramid, and steel may be used.
[0045]
In each said embodiment, although the cylinder 11 was comprised from the fiber reinforced plastic, it is not restricted to this, You may comprise from metals, such as steel.
In the second embodiment, the portable gas charger 1 is used and the cylinder 11 is provided. However, the present invention is not limited to this, and the cylinder 11 may be omitted.
In addition, the specific structure, shape, and the like when carrying out the present invention may be other structures and the like as long as the object of the present invention can be achieved.
[0046]
【The invention's effect】
According to the present invention, there is an effect that it is possible to provide a portable gas charger having good gas supply workability and no problem in maintenance cost.
[Brief description of the drawings]
FIG. 1 is a schematic view of a portable gas charger according to a first embodiment of the present invention.
FIG. 2 is a plan view of the portable gas charger according to the first embodiment.
FIG. 3 is a cross-sectional view of the portable gas charger according to the first embodiment viewed from the long side direction.
FIG. 4 is a cross-sectional view of the portable gas charger according to the first embodiment viewed from the short side direction.
FIG. 5 is a perspective view of the portable gas charger according to the first embodiment.
FIG. 6 is a schematic view showing a usage state of the portable gas charger of the first embodiment.
FIG. 7 is a schematic view showing a usage state of the portable gas charger according to the second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Portable gas charger 6 Gas tank carrier 11 Cylinder 12 Storage case 13 Injection | pouring part 14 Release | release part 15 Adjustment part 16 Measurement part 61 Supply hose

Claims (5)

A portable gas charger used to refill a gas replenishment object,
A cylinder filled with gas,
A storage case in which the cylinder is stored and portable;
An injection part for injecting gas supplied from an external gas supply source into the cylinder;
A discharge part for discharging gas out of the cylinder;
A portable gas charger comprising: an adjusting unit that is connected between the cylinder and the discharge unit and adjusts a gas pressure of the cylinder. The portable gas charger according to claim 1, wherein
A portable gas charger comprising a measuring unit connected to the adjusting unit and measuring a gas pressure of the cylinder. The portable gas charger according to claim 1 or 2,
The cylinder is provided with a main body made of fiber reinforced plastic, and is a portable gas charger. The portable gas charger according to any one of claims 1 to 3,
The portable gas charger, wherein the injection part and the discharge part are stored in the storage case. A portable gas charger used to refill a gas replenishment object,
An injection part for connecting the other end of the hose whose one end is connected to a gas supply source for supplying gas;
An adjustment unit for adjusting the gas pressure of the gas;
A discharge part for discharging the gas whose gas pressure is adjusted; and
A portable gas charger comprising a portable storage case in which the injection part, the adjustment part, and the discharge part are stored.

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