JPH05248596A - Liquefied gas filling device with mixing and filling function - Google Patents

Abstract

(57) [Summary] [Object] To provide a liquefied gas filling device with a mixing and filling function capable of filling a plurality of types of liquefied gas into a container to be filled without much labor and time. [Structure] A container to be filled with liquefied gas is placed, and a measuring unit 2
In the liquefied gas filling device that fills the liquefied gas into the filled container 1 while measuring the weight of the liquefied gas including the filled container by the switching valve 5 connected to a plurality of types of liquefied gas supply parts, A key input unit 13 for inputting a mixing ratio of the liquefied gas to be filled, a calculation unit 21 for calculating each filling target weight to be filled in the filling container 1 from the residual gas weight of the filling container 1 and the liquefied gas mixing ratio. When the filling weight of each liquefied gas reaches the filling target weight, the control unit 22 which closes the filling valve 6 to stop the filling of the liquefied gas, and which is operated when the filling is stopped to notify the outside of this filling stop. Buzzer 15 and provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquefied gas filling device having a mixing and filling function for filling a plurality of types of liquefied gas into a container to be filled.

[0002]

2. Description of the Related Art In recent years, a liquefied gas filling device for filling a liquefied gas into a filling container has been put into practical use.

A liquefied gas filling device of this type is shown in FIG.
As shown in FIG. 3, a container 1 to be filled with liquefied gas is placed, and a weighing unit 2 for measuring the weight of the filled liquefied gas including the container 1 to be filled, a propane gas supply unit 3, and a butane gas supply unit 4 are provided. A switching valve 5 connected to the switching valve 5 for selecting and switching any one of these liquefied gases, and a filled container 1 connected to the switching valve 5 and placed on the measuring unit 2.
The liquefied gas filling part 7 with a filling valve 6 for filling the liquefied gas into the container, the barcode scanner 9 for reading the unique number of the filled container 1 from the barcode label 8 attached to the filled container 1, and the unique number A storage unit 10 that stores the type of the liquefied gas to be filled, the tare weight, and the liquefied gas standard filling amount of the corresponding filled container 1, and a calculation unit 11 that calculates the residual gas amount and the actual filling amount of the filled container 1. And a control unit 12 that controls them.

Reference numeral 13 is a key input section, which is the container 1 to be filled.
If the bar code label 8 is not present or has not been registered, the tare weight of the container 1 to be filled, the liquefied gas standard filling amount, the unique number, etc. can be input through the key input unit 13. It has become. Further, 14 is a display unit for displaying the actual filling weight and the like, and 15 is a buzzer for notifying the end of filling to the outside.

This liquefied gas filling device performs the operation shown in FIG. First, when the container 1 to be filled is placed on the measuring unit 2 and connected to the liquefied gas filling unit 7, the unique number of the container 1 to be filled is read by the barcode scanner 9 (step S
1) Then, the tare weight or the liquefied gas standard filling amount of the container 1 to be filled is called from the storage unit 10 (step S2). Then, the tare weight of the filled container 1 is subtracted from the total weight of the filled container 1 measured by the weighing unit 2, the residual gas weight of the filled container 1 is calculated by the calculation unit 11, and the liquefied gas standard filling amount is calculated. The target gas weight is calculated by subtracting the residual gas weight (step S3). After that, the filling valve 6 is opened to fill the liquefied gas into the container 1 to be filled (step S4), and at the same time, the actual filling weight of the liquefied gas in the container 1 is detected by the measuring unit 2 and the calculating unit 11. And compared with the target filling weight (step S5). Then, when the actual filling weight of the liquefied gas in the filling container 1 reaches the filling target weight, that is, the weighing data reaches the sum of the weight of only the filling container 1 and the liquefied gas standard filling weight, the filling valve 6 is closed. At the same time, the buzzer 15 notifies the clerk of the end of filling (steps S6 and S7).

As a result, by simply reading the unique number of the container 1 to be filled by the barcode scanner 9, the liquefied gas filling operation can be automatically performed.

[0007]

By the way, since propane gas and butane gas have different heat quantities during combustion, propane gas and butane gas are mixed at a predetermined mixing ratio when it is desired to obtain an intermediate heat quantity. May be filled,
In the liquefied gas filling device having the above-mentioned conventional configuration, only either one of propane gas and butane gas can be automatically filled, and it takes a lot of time and effort to fill a mixture of plural kinds of liquefied gas. There was a problem.

That is, when propane gas and butane gas are mixed and filled at a predetermined mixing ratio, first, the weight of the residual gas in the container 1 to be filled, the liquefied gas standard filling weight, and the liquefied gas mixing ratio (weight mixing ratio). ), The staff calculated the actual filling weights of propane gas and butane gas to be filled in the filled container 1. The display unit 1 of the liquefied gas filling device
While watching the actual filling weight displayed in 4, first, when the butane gas is filled up to the target weight, the stop switch (not shown) is pressed to temporarily stop the filling operation, and then the propane gas supply unit The switching valve 5 was switched to the 3 side, and propane gas was automatically charged again. Therefore, not only a lot of labor is required, but it is also necessary to monitor the filling weight of butane gas with the liquefied gas filling device at all times while filling the butane gas.

The present invention solves the above problems, and provides a liquefied gas filling device with a mixing and filling function capable of filling a plurality of types of liquefied gas into a container to be filled without much labor and time. It is intended.

[0010]

In order to solve the above-mentioned problems, the first means of the present invention is to measure the weight of liquefied gas including the container to be filled with a container to be filled with liquefied gas. And a switching valve that is connected to a supply unit for a plurality of types of liquefied gas and that selects and switches any one liquefied gas from these liquefied gases, and is connected to this switching valve through a filling valve, Liquefied gas filling section for filling the liquefied gas into the filled container placed on the weighing section, input section for inputting the mixing ratio of the liquefied gas to be filled, tare weight of the filled container and liquefied gas of the filled container The residual gas weight of the container to be filled is calculated based on the standard filling amount, and each target filling weight to be filled in the container to be filled from the residual gas weight of the container to be filled and the liquefied gas mixture ratio input from the input unit. Calculating unit for calculating And a control unit that detects the actual filling weight based on the data from the calculation unit and closes the filling valve to stop the filling of the liquefied gas when the actual filling weight of each liquefied gas reaches the filling target weight, And a stop state output unit that is activated when the filling is stopped to inform the outside of the stop of the filling.

A second means of the present invention is to install a container to be filled with liquefied gas, to measure the weight of the liquefied gas including the container to be filled, and to supply a plurality of kinds of liquefied gas. Connected to the switching valve with a drive unit for selecting and switching any one of these liquefied gases, and a switching valve connected to this switching valve via a filling valve and mounted on the measuring unit. The liquefied gas filling part for filling the liquefied gas into the filled container, the input part for inputting the mixing ratio of the liquefied gas to be filled, the tare weight of the filled container and the liquefied gas standard filling amount of the filled container. A calculating unit that calculates the residual gas weight of the filling container and calculates each filling target weight to be filled in the filling container from the residual gas weight of the filling container and the liquefied gas mixture ratio input from the input unit, Data from the weighing unit and the calculation unit The actual filling weight is detected based on the parameter, and when the actual filling weight of each liquefied gas reaches the filling target weight, the filling valve is closed to stop the filling of the liquefied gas, and the switching valve is operated by the drive unit. And a control unit for starting the filling of the other liquefied gas by switching.

[0012]

According to the first means, the calculation target calculates the filling target weight of each liquefied gas, and when the actual filling weight of each liquefied gas reaches the filling target weight, the filling valve is closed to close the liquefied gas. By stopping the filling of fuel and notifying the outside of this filling, the clerk only needs to switch the switching valve when the stop of the filling is notified, and the monitoring of the filling amount while supplying butane gas is unnecessary. Therefore, the mixing and filling work can be efficiently performed.

By the second means, when the charging of each liquefied gas is stopped, the switching valve is switched by the drive unit to start the charging of the remaining liquefied gas, thereby performing the mixing and charging work. Can be done automatically.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same functions as those of the conventional one are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 1, the liquefied gas filling device with a mixing and filling function is connected to a metering unit 2 on which a liquefied gas filling container 1 is placed, a propane gas supply unit 3 and a butane gas supply unit 4. Switching valve 5, a liquefied gas filling unit 7 with a filling valve 6, a bar code scanner 9 for reading the unique number of the filled container 1, the type of liquefied gas filled in the filled container corresponding to the unique number, and the tare weight. And a storage unit 10 that stores the liquefied gas standard filling amount and the like, the residual gas weight,
A calculation unit 21 for calculating the residual gas weight and each filling target weight to be filled in the filled container 1, a control unit 22 for controlling these, a key input unit 13, and a buzzer 15 as a stopped state output unit are provided. ing.

Next, the control operation by the control unit 22 of the liquefied gas filling apparatus with the mixing and filling function will be described with reference to FIGS. 2 and 3. First, as shown in FIG.
The container 1 to be filled is placed on the measuring unit 2 and the liquefied gas filling unit 7 is placed.
When connected to, the staff causes the bar code scanner 9 to read the unique number of the container 1 to be filled from the barcode label 8 (step S11), and the tare weight of the container 1 to be filled or the liquefied gas is stored from the storage unit 10. The standard filling amount is called (step S12).

Next, the type of the liquefied liquefied gas is determined from the data in the storage unit 10, and at this time, the control unit 22 determines whether it is a single type or a mixed type (step S1).
3). When propane gas or butane gas alone is filled, the weight of only the filled container 1 is subtracted from the total weight of the filled container 1 measured by the measuring unit 2 and the residual gas weight of the filled container 1 is calculated by the calculation unit 21. And the target filling weight is calculated by subtracting the residual gas weight from the liquefied gas standard filling amount (step S14). After the switching valve 5 is switched to the propane gas supply unit 3 or the butane gas supply unit 4 in advance, the filling valve 6 is opened to fill the container 1 to be filled with the predetermined liquefied gas up to the filling target weight. The filling valve 6 is closed, and the buzzer 15 indicates the end of filling.
And the like (steps S15 to S18).

On the other hand, when filling both liquefied gases,
As shown in, when the mixture ratio of butane gas and propane gas is input from the key input unit 13 (step S21), the residual gas weight is calculated and the actual filling amount of butane gas is calculated from the mixture ratio and the residual gas weight. It is calculated (step S22). For example, when the standard filling amount of liquefied gas in the container 1 to be filled is 50 kg, the residual gas weight is 5 kg, and the mixing ratio of butane gas and propane gas is 1: 2, the actual filling amount of butane gas is 15 kg. It is calculated that there is. Then, the filling valve 6 is opened (step S23) while the switching valve 5 is connected to the butane gas supply unit 4 side in advance, and the filling valve 6 is filled when the butane gas is filled up to the actual filling amount (15 kg). Is opened (steps S24 and S25), the buzzer 15 is sounded, and the staff is informed that the butane gas filling has been stopped (step S26).

After that, an operator connects the switching valve 5 to the propane gas supply unit 3 side (step S27) and notifies the switching operation to open the filling valve 6 to automatically fill the propane gas. When the final target filling weight is reached, the filling valve 6 is closed and the buzzer 15
Informs the clerk of the end of filling (step S28).
~ S32).

As a result, the clerk can carry out the mixing and filling work by a simple operation such as switching the switching valve 5 from the butane gas supply section 4 side to the propane gas supply section 3 side when the buzzer 15 sounds, which has been conventionally done. Monitoring of the filling amount while supplying butane gas is unnecessary. Therefore, the mixed filling of the liquefied gas can be performed efficiently.

FIG. 4 shows a liquefied gas filling apparatus with a mixing and filling function according to another embodiment of the present invention. As shown in FIG. 4, in the liquefied gas filling apparatus with a mixing and filling function, a switching valve 5 is provided. A drive unit 23 is provided, and the control unit 22 can control the switching direction of the switching valve 5 via the drive unit 23.

In this configuration, as shown in FIG.
When the butane gas filling is completed, the switching valve 5 is automatically switched to the propane gas supply unit 3 side via the drive unit 23, and the propane gas is filled subsequent to the butane gas filling. As a result, the butane gas and the propane gas can all be automatically filled, and the liquefied gas can be mixed and filled more efficiently.

In the above embodiment, the buzzer 15 is used to notify the end of butane gas filling, but the end of butane gas filling may be displayed on the display unit 14 or output to an external terminal. Further, it can be applied to a system in which the barcode scanner 9 or the like is not provided and which manually inputs the unique number of the filled container 1. Further, in the above embodiment, the case where two types of liquefied gas are mixed has been described, but it goes without saying that the present invention is also applicable to the case where three or more types of liquefied gas are sequentially mixed and filled. Further, the switching valve 5 can also be used as the filling valve 6.

[0024]

As described above, according to the present invention, the calculation target unit calculates the filling target weight of each liquefied gas, and when the filling weight of each liquefied gas reaches the filling target weight, the filling valve is turned on. By closing and stopping the filling of liquefied gas,
The clerk only has to switch the switching valve when the stop of the filling is notified, and it is not necessary to monitor the filling amount while the butane gas is being supplied, and the efficiency of the mixed filling operation can be improved.

When the filling of each liquefied gas is completed, the switching valve is switched by the drive unit to start the filling of the remaining other liquefied gases, whereby all the mixing and filling work can be performed automatically. It is possible to further improve the efficiency of the mixing and filling work.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a liquefied gas filling device with a mixing and filling function according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a control flow of the liquefied gas filling device with the same mixing and filling function.

FIG. 3 is a flowchart showing a control flow of the liquefied gas filling device with the same mixing and filling function.

FIG. 4 is a block diagram showing a configuration of a liquefied gas filling device with a mixing and filling function according to another embodiment of the present invention.

FIG. 5 is a flowchart showing a control flow of the liquefied gas filling device with the same mixing and filling function.

FIG. 6 is a block diagram showing a configuration of a conventional liquefied gas filling device.

FIG. 7 is a flowchart showing a control flow of the conventional liquefied gas filling device.

[Explanation of symbols]

 1 Container to be Filled 2 Metering Section 3 Propane Gas Supply Section 4 Butane Gas Supply Section 5 Switching Valve 6 Filling Valve 7 Liquefied Gas Filling Section 10 Memory Section 13 Key Input Section 15 Buzzer (Stop State Output Section) 21 Computing Section 22 Control Section 23 Drive Department

Claims (2)

[Claims] 1. A liquefied gas filling device having a mixing and filling function of filling a plurality of types of liquefied gas into a container to be filled,
A container to be filled with liquefied gas is placed, connected to a weighing unit for measuring the weight of liquefied gas including the container to be filled and a supply unit for a plurality of types of liquefied gas. A switching valve for selecting and switching between two liquefied gases, and a liquefied gas filling section for connecting the liquefied gas to a filling container placed on the measuring section and connected to the switching valve via a filling valve An input unit for inputting the mixing ratio of liquefied gas,
The residual gas weight of the filled container is calculated based on the tare weight of the filled container and the liquefied gas standard filling amount of the filled container, and the residual gas weight of the filled container and the liquefied gas mixing ratio input from the input unit are calculated. And a calculation unit for calculating each target filling weight to be filled in the container to be filled, and the actual filling weight is detected based on the data from the measuring unit and the calculating unit so that the actual filling weight of each liquefied gas is the target filling. Mixed filling having a control unit that closes the filling valve to stop the filling of the liquefied gas when the weight is reached, and a stop state output unit that is activated when the filling is stopped and notifies the stop of the filling to the outside. Liquefied gas filling device with function. 2. A liquefied gas filling device having a mixing and filling function for filling a plurality of types of liquefied gas into a container to be filled,
A container to be filled with liquefied gas is placed, connected to a weighing unit for measuring the weight of liquefied gas including the container to be filled and a supply unit for a plurality of types of liquefied gas. A switching valve with a drive unit for selecting and switching between two liquefied gases, and a liquefied gas filling unit that is connected to the switching valve via a filling valve and fills a container to be filled placed on the measuring unit with the liquefied gas And an input section for inputting the mixing ratio of the liquefied gas to be filled, and the tare weight of the container to be filled and the residual gas weight of the container to be filled based on the standard amount of liquefied gas of the container to be filled and the container to be filled. Of the remaining gas weight and the liquefied gas mixture ratio input from the input unit to calculate each target filling weight to be filled in the container to be filled, and the actual filling based on the data from the measuring unit and the arithmetic unit. Liquefaction by detecting weight When the actual filling weight of the gas reaches the filling target weight, the filling valve is closed to stop the filling of the liquefied gas, and the drive unit switches the switching valve to start the filling of other liquefied gas. A liquefied gas filling device with a mixing and filling function, which includes a control unit for controlling the gas.