JP2014092205A - Gas piping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously use a plurality of gas appliances having different gas pressures with one gas cylinder, by supplying gas with a plurality of gas pressures from one gas cylinder.SOLUTION: A branch pipe 10 is constituted such that a downstream pipeline 12, which branches one gas passage formed by an upstream pipeline 11 into a plurality of gas passages, is connected to the upstream pipeline 11 connected to a gas supply pipe 32 of a gas cylinder 30. A low-pressure regulator 21 and an intermediate pressure regulator 22, in which adjusted gas pressures are different from each other, are connected to each of the plurality of downstream ends of the downstream pipeline 12.

Description

  The present invention relates to a gas piping device that supplies propane gas (LP gas) cylinder gas to gas equipment.

When using gas equipment using propane gas as fuel, the gas equipment is connected to a gas cylinder filled with gas via a pressure regulating valve. Such a configuration is disclosed in Patent Document 1 below.
For example, in the event of a disaster without a power source or an outdoor event, when propane gas is used for lighting and cooking at the same time, two gas cylinders are prepared, and a gas generator and gas stove are connected to each gas cylinder via a pressure regulating valve. It corresponds.

JP 2003-144334 A

Thus, when using simultaneously the gas equipment from which gas pressure differs, there exists a problem which requires a some gas cylinder for every gas equipment. In other words, when only one gas cylinder can be prepared, only one gas device can be used. Alternatively, even if a plurality of gas cylinders can be prepared, the gas cylinder is heavy, and must be transported to a disaster area or event venue, which requires a great deal of labor and energy for transportation. In addition, the installation space is increased.
In view of such a problem, an object of the present invention is to enable simultaneous use of a plurality of gas appliances having different gas pressures in one gas cylinder by supplying a plurality of gas pressure gases from one gas cylinder. .

The gas piping device according to the first aspect of the present invention is a downstream pipe that branches one gas flow path formed by the upstream pipe into a plurality of gas flow paths with respect to the upstream pipe connected to the gas supply port of the gas cylinder. A branch pipe is formed by connecting the passages, and a plurality of downstream ends of the downstream pipe passages are connected to pressure regulating valves having different gas pressures to be adjusted.
According to the first invention, the upstream pipe line is connected to the gas supply port of the gas cylinder, and the gas equipment set to the gas pressure corresponding to the regulated gas pressure of each pressure regulating valve is connected to the downstream end of each pressure regulating valve. Thus, a plurality of gas devices having different gas pressures can be simultaneously used in one gas cylinder.

According to a second aspect of the present invention, in the first aspect, the downstream pipe is formed so as to be curved so as to form an arc shape as a whole except for the downstream ends thereof.
By branching the gas flow path by the branch pipe, the gas flow path from the gas supply port of the gas cylinder to each gas device is bent, and the gas flow resistance increases, but according to the second invention, the gas flow path is branched. Since the degree of bending of the gas flow path is smoother than when the gas flow path is bent at a right angle, an increase in gas flow resistance can be suppressed.

According to a third aspect of the present invention, in the first or second aspect, the branch pipe is provided at an upper end portion of the vertically placed gas cylinder and an open portion of the valve guard fixed so as to surround the upper end portion of the gas cylinder. A portion of the branch pipe that is exposed to the outside from the valve guard is covered with a cover body, the cover body is fixed to the valve guard, and each downstream end of the downstream pipe line is connected to the cover body. It protrudes from the outside to the outside.
According to the third invention, the branch pipe is covered with the valve guard and the cover body while being connected to the gas supply port of the gas cylinder, so that the branch pipe can be protected from an external impact. Therefore, they can be handled as a single unit while the branch pipe is connected to the gas supply port of the gas cylinder, and the labor of attaching and detaching the branch pipe to and from the gas supply port of the gas cylinder can be saved.
If the branch pipe is not covered by the cover body and exposed to the outside, the gas cylinder may be lifted through the branch pipe by the operator holding the branch pipe like a handle when the gas cylinder is transported. There is. If such a handling is received, there is a risk that a connection part between the branch pipe and the gas supply port of the gas cylinder is broken. According to the third invention, since the branch pipe is covered with the cover body, it does not receive such handling.

According to a fourth aspect of the present invention, in the first or second aspect of the invention, the branch pipe and all the pressure regulating valves are housed in one casing, and the upstream pipe connected to the gas supply port of the gas cylinder is provided. An upstream end and a downstream end of the pressure regulating valve connected to each gas device are projected outside the casing.
According to the fourth aspect of the present invention, the branch pipe and all the pressure regulating valves can be handled as a single unit, and handling is easier than when the branch pipe and each pressure regulating valve are handled separately. Moreover, since the branch pipe and all the pressure regulating valves are covered by the casing, the branch pipe and all the pressure regulating valves can be protected from external impacts.

1 is a perspective view of a first embodiment of the present invention. It is a side view of the said 1st Embodiment. It is the perspective view which looked at the said 1st Embodiment from the angle different from FIG. It is the perspective view which looked at the said 1st Embodiment from another angle different from FIG. It is a perspective view of the branch pipe in the said 1st Embodiment. It is a perspective view of 2nd Embodiment of this invention. It is a perspective view of 3rd Embodiment of this invention. It is the perspective view which looked at the said 3rd Embodiment from the angle different from FIG. It is the top view which saw through the casing of the said 3rd Embodiment. It is the side view which saw through the casing of the said 3rd Embodiment. It is a perspective view of 4th Embodiment of this invention. It is the front view which saw through the casing of the said 4th Embodiment. It is the side view which saw through the casing of the said 4th Embodiment. It is a perspective view of 5th Embodiment of this invention.

<First embodiment>
1 to 4 show a first embodiment of the present invention. In the first embodiment, the branch pipe 10 is connected to a gas supply pipe 32 that is a gas supply port of the gas cylinder 30 at an upper end portion of the gas cylinder 30 in which the branch pipe 10 is vertically installed. A hand-tightening handle 13 is provided on the side of the gas supply pipe 32 of the branch pipe 10, and a valve (not shown) provided inside the gas supply pipe 32 is opened and closed by operating the hand-tightening handle 13, as is well known. By the opening and closing, the supply of gas from the gas cylinder 30 to the branch pipe 10 is interrupted.
FIG. 5 shows the branch pipe 10 alone, and the branch pipe 10 branches one gas flow path formed by the upstream pipe 11 into two with respect to the upstream pipe 11 connected to the gas supply pipe 32. A downstream pipe 12 is connected. The downstream pipe line 12 is connected to the upstream pipe line 11 and the downstream pipe line 12 so that the degree of bending of each gas flow path continuing from the upstream pipe line 11 to the downstream ends 12A and 12B of the downstream pipe line 12 becomes smooth. The part from the part to the downstream ends 12A and 12B is formed to be curved in an arc shape as a whole. Note that the above-described hand tightening handle 13 is provided in the vicinity of the upstream end 11 </ b> A of the upstream pipeline 11. Further, as shown in FIG. 1, pressure adjusting valves 21 and 22 having different gas pressures adjusted to each other are connected to the downstream ends 12 </ b> A and 12 </ b> B of the downstream pipe 12.

As shown in FIGS. 1 to 4, a valve guard 31 is welded and fixed to the upper end portion of the gas cylinder 30 so as to surround the gas supply pipe 32. The valve guard 31 protects the gas supply pipe 32 portion of the gas cylinder 30 from being damaged by an external force, and is also used as a handle when the valve guard 31 transports the gas cylinder 30.
The valve guard 31 made of metal surrounds the gas supply pipe 32 in an annular shape, but the side to which the branch pipe 10 is connected is opened, and this open part is made of metal or FRP (fiber reinforced plastic). A cover body 40 is provided. The cover body 40 is fixed to the valve guard 31 by an upper mounting portion 42, and the gas supply pipe 32 is surrounded by the valve guard 31 and the cover body 40 in an annular shape without a gap.
The attachment portion 42 is a band that is wound around the outer peripheral surface of the valve guard 31 and includes a clamp (not shown) in part, and makes the cover body 40 detachable from the valve guard 31. The attachment portion 42 may be integrated with or separate from the cover body 40. Further, the attachment portion 42 is formed to be bent in an annular shape so that the upper end edge of the attachment portion 42 is engaged with the upper end edge of the valve guard 31, so that the attachment portion 42 does not slide downward with respect to the valve guard 31. May be.
The cover body 40 has the downstream ends 12A and 12B of the downstream pipe 12 of the branch pipe 10 protruding, and a portion of the cover body 40 sandwiched between the downstream ends 12A and 12B of the downstream pipe 12 is a protruding portion. 41. As described above, the branch body 10 connected to the gas supply pipe 32 is covered by the cover body 40 having the projecting portion 41 except for the downstream ends 12A and 12B of the downstream pipe 12.

According to the first embodiment, the upstream pipeline 11 is connected to the gas supply pipe 32 of the gas cylinder, and the downstream ends of the pressure regulating valves 21 and 22 connected to the downstream ends 12A and 12B of the downstream pipeline 12 are respectively connected to the downstream ends. By connecting gas devices set to gas pressures corresponding to the regulated gas pressures of the pressure regulating valves 21 and 22, it is possible to simultaneously use a plurality of gas devices having different gas pressures in one gas cylinder 30. it can.
Further, branching the gas flow path in the branch pipe 10 bends the gas flow path from the gas supply pipe 32 of the gas cylinder 30 to each gas device and increases the gas flow resistance. According to this, since the downstream pipe 12 of the branch pipe 10 has a curved shape and the degree of bending of the gas flow path is smoother than when the downstream pipe 12 is bent at a right angle, the gas flow resistance is increased. Can be suppressed.

Furthermore, according to the first embodiment, the branch pipe 10 is covered by the valve guard 31 and the cover body 40 while being connected to the gas supply pipe 32 of the gas cylinder 30, so that the branch pipe 10 is protected from external impacts. can do. Therefore, they can be handled as a single unit while the branch pipe 10 is connected to the gas supply pipe 32 of the gas cylinder 30, and the labor of attaching and detaching the branch pipe 10 to and from the gas supply pipe 32 can be saved. it can.
If the branch pipe 10 is not covered by the cover body 40 and exposed to the outside, the branch pipe 10 is gripped by an operator like a handle when the gas cylinder 30 is transported, and the gas cylinder is passed through the branch pipe 10. 30 may be lifted. If such handling is received, there is a risk that a connection part between the branch pipe 10 and the gas supply pipe 32 is damaged. According to the first embodiment, since the branch pipe 10 is covered with the cover body 40, such handling is not received.

<Second Embodiment>
FIG. 6 shows a second embodiment of the present invention. The feature of the second embodiment over the first embodiment described above is that the shape of the cover body 40 in the first embodiment is changed to form the cover body 50. That is, it is characterized in that an upper mounting portion 52 and a lower mounting portion 53 are provided with two upper and lower mounting portions for fixing the cover body 50 to the valve guard 31. Other configurations are exactly the same as those in the first embodiment and the second embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.
The upper mounting portion 52 has the same configuration as the mounting portion 42 in the first embodiment, and the lower mounting portion 53 is also provided corresponding to the lower portion of the valve guard 31, but the basic configuration is exactly the same as the mounting portion 42. . Further, the protrusion 51 has the same configuration as the protrusion 41 in the first embodiment.
According to the second embodiment, since there are two attachment portions of the cover body 50, the upper attachment portion 52 and the lower attachment portion 53, when the attachment is made by one attachment portion 42 as in the first embodiment. In comparison, the attachment strength of the cover body 50 to the valve guard 31 can be increased.

<Third embodiment>
7 to 10 show a third embodiment of the present invention. The feature of the third embodiment over the first embodiment described above is that the branch pipe 10 and the pressure regulating valves 21 and 22 are integrated and separated from the gas cylinder 30. That is, a low pressure regulator 21 and an intermediate pressure regulator 22 that are pressure regulating valves are respectively connected to the downstream ends of the downstream pipes 12 of the branch pipe 10, and the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 are connected to each other. It is stored in a box-shaped casing 60. The low pressure regulator 21 adjusts the gas pressure to an optimum pressure for a household gas stove (not shown), and the intermediate pressure regulator 22 adjusts the gas pressure to an optimum pressure for a gas generator (not shown). To be adjusted.
The downstream ends 23 and 24 of the low-pressure regulator 21 and the intermediate-pressure regulator 22 and the upstream end 11B of the upstream pipe 11 of the branch pipe 10 protrude outward from the side wall of the casing 60, respectively. A gas stove (not shown) for household use is connected to 23, a gas generator (not shown) is connected to the downstream end 24 of the intermediate pressure regulator 22, and the upstream pipe 11 of the branch pipe 10 is further connected. A gas supply pipe 32 (see FIG. 1) of the gas cylinder 30 is connected to the upstream end 11B of the gas cylinder 30 via a flexible high pressure hose 14. In the middle of the high-pressure hose 14, the hand tightening handle 13 provided in the upstream pipe line 11 of the branch pipe 10 in the first embodiment is moved.
The casing 60 is made of a mesh plate having air permeability, and even if a gas leak occurs in the casing 60, consideration is given so that the leaked gas does not fill the casing 60. Legs 61 are provided at the four corners of the lower part of the casing 60 so that they can be placed on the ground independently of the gas cylinder (30). A caster may be provided at the lower end of each leg 61. When the caster is provided, the position of the casing 60 on the ground can be easily moved.

  According to the third embodiment, a single gas cylinder (30) can use a gas stove with a low gas pressure standard and a gas generator with a medium gas pressure standard at the same time. Therefore, lighting and cooking can be performed simultaneously with propane gas at the time of a disaster without a power source or an outdoor event. In addition, the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 can be handled as a single unit, and handling is easier than when the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 are handled separately. become. Moreover, since the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 are covered with the casing 60, the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 can be protected from external impacts.

<Fourth embodiment>
11 to 13 show a fourth embodiment of the present invention. The feature of the fourth embodiment over the third embodiment described above is that the casing 60 in the third embodiment is a vertically long casing 70. That is, in the casing 60 of the third embodiment, the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 are connected to each other in the horizontal direction so that the gas flows in the horizontal direction, but the casing 70 of the fourth embodiment. Inside, the gas which flows through the branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 is mutually connected perpendicularly so that it may flow in the perpendicular direction.
Here, the downstream ends 23 and 24 of the low pressure regulator 21 and the intermediate pressure regulator 22, and the upstream end 11B of the upstream pipeline 11 to which the gas supply pipe 32 (see FIG. 1) of the gas cylinder 30 is connected via the high pressure hose 14 are , And are provided at positions facing each other at the lower part of the casing 70. The gas supplied to the upstream end 11B is led to the upstream pipe line 11 of the branch pipe 10 arranged at the upper part in the casing 70 via the pipe 15 arranged along the vertical direction.
A fixing plate 72 is fixed to the rear surface side of the front plate of the casing 70 in which the downstream ends 23 and 24 of the low-pressure regulator 21 and the intermediate-pressure regulator 22 protrude and are fixed to the fixing plate 72 by a fixing fitting 73. The branch pipe 10, the low pressure regulator 21, and the intermediate pressure regulator 22 are fixed. Further, leg portions 71 are provided at the four corners of the lower surface of the casing 70 to support the casing 70.

The casing 70 is configured by a mesh plate having air permeability like the casing 60 in the third embodiment, but only the front surface and the upper surface are configured by a flat plate without an opening. This is to prevent rain from entering the casing 70 even when it is raining when the apparatus is used outdoors. Moreover, the front plate also has a meaning of improving the appearance by preventing the inside of the casing 70 from being seen. Further, a gas pressure gauge that displays the amount of gas used may be attached to the front plate.
Other configurations are the same as those of the third embodiment and the fourth embodiment, and the same portions are denoted by the same reference numerals and the description thereof is omitted.
In 4th Embodiment, since the casing 70 was made into the vertically long shape, it can respond also when there is little space for putting the casing 70. FIG. In other respects, the same operational effects as those of the third embodiment can be achieved.

<Fifth embodiment>
FIG. 14 shows a fifth embodiment of the present invention. The feature of the fifth embodiment over the above-described third embodiment is that the casing 60 in the third embodiment is downsized to form a casing 80 and each leg portion 61 is omitted. That is, the casing 80 is used by being placed on a stand or the like prepared separately. Other configurations are exactly the same as those in the third embodiment and the fifth embodiment, and the same portions are denoted by the same reference numerals and the description thereof is omitted.
In the fifth embodiment, the same function and effect as in the third embodiment can be achieved.

As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example,
1. In the above embodiment, only one gas cylinder is used, but a plurality of gas cylinders may be combined. Even when the gas cylinder is composed of a plurality of gas cylinders, the gas supply ports of the gas cylinder are combined into one and connected to the upstream pipe of the branch pipe.
2. In the above embodiment, the downstream pipe line of the branch pipe is branched into two, but may be branched into three or more.
3. In the above embodiment, the downstream pipe of the branch pipe is generally curved in an arc shape, but is bent at a right angle on the upstream side of the downstream end of the downstream pipe, or the upstream pipe It may be branched diagonally in each direction at the connecting portion.

DESCRIPTION OF SYMBOLS 10 Branch pipe 11 Upstream pipe 11A, 11B Upstream end 12 Downstream pipe 12A, 12B Downstream end 13 Hand tightening handle 14 High pressure hose 15 Pipe 21 Low pressure regulator (pressure control valve)
22 Medium pressure regulator (pressure regulating valve)
23, 24 Downstream end 30 Gas cylinder 31 Valve guard 32 Gas supply pipe (gas supply port)
40, 50 Cover body 41 Projection part 42 Attachment part 51 Projection part 52 Upper attachment part 53 Lower attachment part 60, 70, 80 Casing 61, 71 Leg part 72 Fixing plate 73 Fixing bracket

Claims (4)

For the upstream pipe connected to the gas supply port of the gas cylinder, a downstream pipe that branches one gas flow path formed by the upstream pipe into a plurality of gas flow paths is connected to form a branch pipe,
A gas piping device comprising: a plurality of downstream ends of the downstream pipe line, each having a pressure adjusting valve having a different gas pressure adjusted thereto. In claim 1,
The downstream piping is curved and formed so that the whole except for each downstream end forms an arc shape. In claim 1 or 2,
The branch pipe is provided at an upper end portion of a vertically placed gas cylinder and an opening portion of a valve guard fixed so as to surround the upper end portion of the gas cylinder.
Of the branch pipe, the part exposed to the outside from the valve guard is covered with a cover body,
The cover body is fixed to the valve guard,
Each downstream end of the said downstream pipe line protrudes outside from the said cover body, The gas piping apparatus characterized by the above-mentioned. In claim 1 or 2,
The branch pipe and all the pressure regulating valves are housed in one casing;
A gas piping device, characterized in that an upstream end of the upstream pipe connected to a gas supply port of a gas cylinder and a downstream end of the pressure regulating valve connected to each gas device protrude outside the casing. .

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