JPH0492194A - gas filling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas filling device for automatically filling a cylinder with liquefied gas in a fixed amount.

BACKGROUND OF THE INVENTION This type of gas filling apparatus uses a platform scale 1, as shown in FIG. The indicator 2 with a built-in control circuit is configured to close the filling valve 5 interposed in the gas supply path 4 to the cylinder 3 to be filled when the weight value of the platform scale 1 reaches a specified value. There is. A deep pit 6 is formed in which a platform scale 1 is installed so that the cylinder 3 to be filled can be easily loaded and unloaded.

In the event of a fire, water is sprinkled on the cylinder 3 to be filled while it is being filled to reduce the temperature rise. , the pit 6 has a large diameter drainage port 8.
is provided.

Problems to be Solved by the Invention In such a configuration, in order to eliminate the level difference between the platform scale 1 and the floor level FL, a deep pit 6 is required, and a large drainage port 8 is provided to protect the load cell 7. However, there is a problem in that the installation work requires a long time.

An object of the present invention is to provide a gas filling device that allows easy loading and unloading of filled cylinders even if the pit is shallow or pitless, and does not require a large drainage port even if a pit is provided. shall be.

Means for Solving the Problems The gas filling device of the present invention measures the weight of the cylinder to be filled with a weighing section, and when the weight value of the weighing section reaches a specified value, gas is supplied to the filling valve. The weighing section is configured to close a valve interposed in the passageway, and the weighing section is connected by a pair of parallel leaf springs between the upper and lower parts of the stationary side and the upper and lower parts of the movable side. The present invention is characterized in that a mechanism is formed, a load cell is interposed between the fixed side and the movable side, and a platform on which the cylinder to be filled is placed is formed on the end face of the movable side.

Effect: According to this configuration, the load cell can be placed at a position on the side of the platform and higher than the platform. Therefore, the top surface of the platform can be brought close to the floor level without providing a deep pit, and even if a shallow pit is provided, a small diameter drainage port is sufficient.

Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 and 2. Components having the same functions as those in FIG. 3 showing the conventional example will be described with the same reference numerals.

As shown in FIG. 1, the gas filling device of the present invention has a weighing section 9.
is configured. The upper and lower parts of the fixed side IO and the movable side II are connected by a pair of mutually parallel leaf springs 12 and 13 to form a donkey pal mechanism, and a rotor self is provided between the fixed side IO and the movable side 11. A platform 15 is formed on the end surface 14 of the movable side 11 on which the cylinder 3 to be filled is placed. Here, the fixed end of the load cell 7 is attached to the overhang 16 on the fixed side 10, and the force application point side 17 is connected to the overhang I9 on the movable side 1 by a hanging rod IB.

With this configuration, when the cylinder 3 to be filled is placed on the mounting table 15, the movable side 11 moves downward parallel to the fixed side 10, and the load cell 7 is moved to the point of application via the hanging rod 18. The sides are bent downwards. This amount of bending is converted into a load and the total weight of the cylinder 3 to be filled is measured. During filling, tare erasure processing is performed with the cylinder 3 to be filled placed on the platform I5 and the filling valve 20 attached to the cylinder 3 to be filled, and the known empty container weight value of the cylinder 3 to be filled and the cylinder When the weight value reaches the weight of the gas to be filled which can be calculated based on the volume, the filling valve 5 interposed in the gas supply path 4 is closed.

According to this configuration, the load cell 7 can be placed on the side of the platform 15 at a position higher than the top surface of the platform 15. In order to make the upper surface of the platform 15 substantially equal to the floor level FL, it is only necessary to provide a shallow bit 6 capable of sinking only a portion of the platform I5. Further, even if the platform 15 is submerged in water, the load cell 7 is not submerged, and the bit 6 only needs to be provided with a drain port 8 having a small diameter to allow the water that has entered to drain completely.

Therefore, the period of installation work can be shortened compared to the conventional method.

Although in the above embodiment a shallow bit 6 is provided, this can also be made pitless as shown in FIG. 2 if the level of the platform I5 can be slightly higher than the floor level.

Effects of the Invention As described above, according to the present invention, the weighing unit for measuring the weight of the cylinder to be filled is formed by a pair of parallel plate springs between the upper and lower parts of the fixed side and the upper and lower parts of the movable side. A wall-mounted structure in which a donkey pal mechanism is formed by connecting them, a load cell is interposed between the fixed side and the movable side, and a platform on which the cylinder to be filled is placed is formed on the end face of the movable side. Therefore, the load cell can be placed on the side of the platform, higher than the top surface of the platform, so it is no longer necessary to install a platform scale inside the bit as in the past, and the load cell can be placed on the side of the platform at a higher position than the top surface of the platform. Even if the pit is approximately equal to the floor level, it is sufficient to provide a shallow pit. It can also be installed bitless.

Furthermore, since the load cell is constructed so that it will not be submerged even if the platform is submerged in water, even if a bit is installed, the drain port connected to the pit can be of a smaller diameter than before, which reduces the installation work time. can be made shorter than before.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the gas filling apparatus of the present invention, FIG. 2 is a block diagram of another embodiment, and FIG. 3 is a block diagram of a conventional gas filling apparatus. 3...Cylinder to be filled, 4...Gas supply path, 5...
Filling valve, 6...Bit, 7...Load cell, 8...
・Drain port, 9... Weighing part, lO... Fixed side, 11.
... Movable side, 12.13... Leaf spring, I5... Mounting stand.

Claims (1)

[Claims] 1. The weight of the cylinder to be filled is measured by a weighing section, and when the weighing value of the weighing section reaches a specified value, the valve installed in the gas supply path to the filling valve is closed. With,
The weighing section is connected between the upper and lower parts of the fixed side and the upper and lower parts of the movable side by a pair of mutually parallel leaf springs to form a roberval mechanism, and a load cell is interposed between the fixed side and the movable side. A gas filling device comprising: a mounting base on which a cylinder to be filled is placed on the end face of the movable side;