JP2960125B2 - How to replace gas cylinders - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for replacing gas cylinders in a system for supplying gas to a consumer unit such as a household from a collective supply device including a plurality of LP gas cylinders. .

[Conventional technology]

FIG. 4 shows a conventional collective feeding system, in which 1 indicates an automatic switching regulator, and collecting pipes 2, 3 are connected to the left and right sides thereof.

The same number of gas cylinders 4, 5 are detachably connected to the collecting pipes 2, 3, respectively.

Further, the main switching line 6 is connected to the automatic switching regulator 1 to supply gas to a consuming unit such as each home.

In the case of the above-mentioned conventional system, for example, when the left collecting pipe 2 in FIG. 4 is used as the use side by the automatic switching regulator 1, the right collecting pipe 3 becomes the spare side.

In the above condition, consume the LP solution in each cylinder 4 on the left,
After emptying, the adjuster 1 is automatically placed in the right cylinder 5.
When the LP liquid starts to be consumed and the remaining liquid amount on this side is 50%, the liquid is made to have a vaporizing capacity commensurate with the consumption.

That is, LP gas requires heat of vaporization in order to vaporize, and the amount of evaporation per cylinder is determined by the temperature and wind speed, consumption time, and the like. .

In this conventional system, for example, all the cylinders 4 on the left side are emptied, the automatic switching regulator 1 is operated, the use side is switched to the right side, and the cylinder 4 on the right side is emptied using gas. All cylinders 4 on the left side have been replaced.

In Japanese Patent Application No. 57-138143 (Japanese Patent Application No. 59-029896), an automatic switching device that can automatically supply gas from a spare gas cylinder when the pressure of a supply gas cylinder falls below a predetermined level, and at least two , And a connection port connected to a gas cylinder from piping connected between each intermediate cock and between the automatic switching device and the intermediate cock. A gas cylinder switching device "has been proposed.

[Problems to be solved by the invention]

In the case of the conventional system described above, the number of cylinders on the spare side is the same as the number of cylinders on the use side both when the vaporization conditions in winter are poor and when the vaporization conditions in summer are good.

Therefore, cylinder replacement is performed on one side that has been emptied during one delivery. Conventionally, the number of replacements is the same throughout the year.

However, replacing the same number of cylinders as in winter when evaporation conditions in summer are good is a problem in terms of labor saving.

In addition, the proposal of Japanese Patent Application No. 57-138143 has no idea that the gas cylinders should be replaced separately when the vaporization conditions in summer are good and when the vaporization conditions are bad in winter. The piping system shown in FIG. 3 cannot cope with the winter season, and the piping system shown in FIG. 3 can be used for both summer and winter. However, the number of valve operations is large, which is extremely inconvenient.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems by a simple valve operation and to reduce the number of times of delivery in summer by increasing the number of exchanges per operation to save labor.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention connects an inner end of left and right collecting pipes connected to a plurality of gas cylinders to a main pipe line leading to a consuming unit via an automatic switching regulator, and provides an intermediate between the left and right collecting pipes. A valve is connected to the outside of both valves by a bypass line having a valve.In winter, the valve of the bypass line is closed and both valves of the collecting line are opened and the supply side is connected to the supply side. A spare cylinder group will be formed, and in the summer, the bypass pipe valve will be opened, one of the collecting pipe valves will be opened, and the other will be closed, forming the supply and spare cylinder groups. It is something to do.

ADVANTAGE OF THE INVENTION According to this invention comprised as mentioned above, simple valve operation, that is, efficient gas cylinder replacement | exchange according to the vaporization conditions of LP gas in summer and winter only by operating the valve of a bypass pipe and the valve of a collecting pipe A method is obtained.

〔Example〕

In the embodiment shown in FIGS. 1 to 3, reference numeral 11 denotes an automatic switching regulator, and collecting pipes 12 and 13 are connected to the left and right sides thereof.

Almost the same number of gas cylinders 14, 15 are detachably connected to the collecting pipes 12, 13, respectively.

In addition, a main conduit 16 is connected to the automatic switching regulator 11 to supply gas to consuming units such as homes.

In the middle part of the above left and right collecting pipes 12, 13, valves 19, respectively
20 and outside the valves 19 and 20, both collecting pipes 1
2 and 13 are communicated by a bypass pipe 21, and a valve 22 is connected to this pipe 21.
Is provided.

The method of the present invention is carried out using the above-mentioned piping. In the case of FIG. 1, the valve 22 of the bypass pipe 21 is closed, and the valves 19 and 20 of the left and right collecting pipes 12 and 13 are opened. And

This state is the same as the conventional example of FIG. 4 and is suitable for winter. Each cylinder 14 of one collecting pipe 12 becomes empty, and the automatic switching regulator 11
As a result, all cylinders 14 belonging to the left collecting pipe 12 are replaced when the right collecting pipe 13 is connected to the main conduit 16.

FIG. 2 shows the case of summer, in which the valves 19 and 20 are opened and the valve 20 is closed.

In this case, all of the gas cylinders 14 belonging to the left collecting pipe 12 and the gas cylinder 15 group a belonging to a pipe outside the valve 20 of the right collecting pipe 13 are used.

Then, the remaining gas cylinder 15 group b belonging to the collecting pipe 13 is set as the spare side.

In this case, when the entire cylinder 14 on the left side and the cylinder 15 a outside the valve 20 on the right side are empty, the automatic switching regulator 11
Automatically uses the gas of the gas cylinder 15 group b, and replaces the empty gas cylinder 14 and the gas cylinder 15 group a during that time.

After replacing the empty gas cylinder 14 and the gas cylinder 15 group a with a full cylinder as described above, the automatic switching regulator 11 is operated to switch the use side to the right, and as shown in FIG.
With the open, the valve 19 is closed and the valve 20 is opened.

In this state, all cylinders 15 belonging to the right collecting pipe 13
And the cylinder group a 'outside the valve 19 of the collecting pipe 12 on the left side is the use side, and the cylinder group b' inside the valve 19 is the spare side.

〔The invention's effect〕

The present invention provides a valve in the middle part of the left and right collecting pipes in the gas collective supply apparatus as described above, and utilizes the system in which the outsides of the two valves are connected by a bypass line having a valve, as described above, with the spare side. In the summer, a sufficient amount of evaporation can be obtained with only the cylinders inside the valves provided in the middle of the left and right collecting pipes.

Therefore, the number of gas cylinders to be replaced at one time increases, so that the number of times of delivery of the gas cylinders is reduced, and labor can be saved.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 are front views showing respective states of a gas supply system for carrying out the method of the present invention, and FIG. 4 is a front view of a conventional gas supply system. 11… Automatic switching regulator, 12, 13… Collecting pipe, 14, 15… LP gas cylinder, 16 …… Main pipeline, 19, 20, 22 …… Valve, 21 …… By-pass pipe.

Claims (1)

(57) [Claims] An inner end of the left and right collecting pipes to which a plurality of gas cylinders are connected is connected to a main pipe leading to a consuming section via an automatic switching regulator, and a valve is provided in the middle of the left and right collecting pipes. The outside of both valves is connected by a bypass line having a valve, and in winter, the valve of the bypass line is closed and both valves of the collecting line are opened to connect the supply-side and spare-side cylinder groups. In the summer, a gas cylinder in which the bypass line valve is opened and one of the collecting pipe valves is opened and the other is closed to form a supply-side and a reserve-side cylinder group Exchange method.