JPH07198096A - Gas charging device - Google Patents

Abstract

PURPOSE:To improve workability by setting an address memory corresponding to a cylinder placing part, and storing the gas charging quantity every address of the memory to control a solenoid valve in a device for automatically charging gas such as LP gas in a gas cylinder carried onto a turntable. CONSTITUTION:Electronic scales 3, 4 are installed at the carry-in path 1 and carry-out path of a turntable A, and the measured signals are inputted to a control panel A carried-in cylinder T is transferred by the turntable A. During this transfer, gas having passed a charging valve 10 from a gas distributor 5 is charged in the cylinder T, and the gas flow at the gas charging time is measured by a flowmeter 9. In such a charging device, an air distributor 6 and an electricity distributor 7 are installed at the center part on the turntable A, and a solenoid valve and a controller 33 are disposed around the distributors 6, 7. An address memory corresponding to a cylinder placing part is set to the controller 33, and the solenoid valve is controlled according to the gas charging quantity stored every address of the memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas filling device for LP gas or the like, and more particularly to an improvement of a device for automatically filling a gas container carried onto a turntable with a predetermined amount of gas such as LP gas.

[0002]

2. Description of the Related Art The applicant of the present application, as an automatic LP gas filling device, places a container on an electronic scale installed in a carry-in passage of a turntable and weighs it, and calculates a gas filling amount based on the measured value. While the container is being transferred by a turntable, the container is filled with a predetermined amount of gas through a gas distributor and a filling valve, and further, a gas distributor, an air distributor, a solenoid valve, a controller and an optical fiber rotary. An apparatus using a joint was proposed (Japanese Utility Model Laid-Open No. 62-34296). It is composed.

[0003]

In the embodiment, the above-mentioned conventional apparatus has a structure in which the solenoid valve and the controller are fixedly installed under the turntable. Therefore, when the apparatus is installed in the filling factory, the solenoid valve is installed. , The controller wiring is troublesome, the workability is poor, maintenance and inspection are inconvenient, and the responsiveness between the flow meter and the controller is low, so the instantaneousness of the closing operation of the filling valve is poor and the filling amount accuracy can be obtained. I couldn't do it.

In view of such circumstances, it is an object of the present invention to provide a gas filling device which improves the workability of factory installation, is easy to maintain and inspect, and improves the filling amount accuracy and the filling accuracy. .

[0005]

On the above turntable, an air distributor and an electric distributor are installed in the central part, a solenoid valve and a controller are arranged around these distributors, and a necessary peripheral part is provided. A number of container mounting portions are arranged at equal intervals, and a gas distributor is installed above the central portion so that the gas distributor rotates integrally with the table. Connect gas supply pipes and gas distribution pipes in various ways, and install a flow meter and a filling valve in each of these filling hoses, and connect air hoses to the above air distributor in various ways. A hose is connected to each filling valve via the solenoid valve to open and close the filling valve, and the controller has a central processing unit and has an address memory corresponding to the container mounting portion. The memo The respective solenoid valves and flowmeters are connected correspondingly to each address, and an optical fiber rotary joint is arranged on the upper axial center of both distributors, and the central cavity of both distributors is used to control the controller. It is characterized in that an optical distributor and an electric distributor are installed in a central portion on a turntable, and a solenoid valve and a controller are arranged around the distributor so as to make optical communication with a control panel.

[0006]

According to the present invention, since the solenoid valve and the controller are arranged on the turntable, the workability of the installation is improved and the maintenance and inspection are easy, and the solenoid valve, the flow meter and the controller are both turntable. On top,
Further, the controller has a central processing unit and has an address memory corresponding to the container mounting portion, the gas filling amount is input and stored for each address of the memory, and the solenoid valve is operated by the operation of each flow meter. Since it is operated, the responsiveness of the signal command is improved and the closing operation of the filling valve is instantaneous.

[0007]

1 is a schematic plan view of an LP gas filling apparatus shown as an embodiment of the present invention, and FIG. 2 is a sectional side view thereof.
In the figure, A is a turntable, 1 is a carry-in path, 2 is a carry-out path,
3 and 4 are electronic scales, 5 is a gas distributor, 6 is an air distributor,
7 is an electric distributor, T is a container not filled with gas, T'is a container filled with gas, B has a central processing unit CPU, and is connected to an input operation part b, electronic scales 3, 4 and a controller 33 described later. It is a control panel. The turntable A is horizontally rotatably installed on the floor and is continuously rotated at a low speed by the drive unit 11.

On the turntable A, container mounting portions P ₁ , P ₂ ... P _n are positioned and arranged at regular intervals on the same circumference, and gas filling hoses 8 are provided in the vicinity of the respective mounting portions. The supporting rod 12 for holding is set up. Further, on the turntable A, the air distributor 6 and the electric distributor 7 are arranged in a multi-stage manner in the central portion thereof, and the solenoid valve 15 and the controller are provided around the air distributor 6.
33 is installed and the container mounting parts P ₁ , P ₂ ... P
_The same number as the columns 30, 30, ... Are erected, and the platform 31 is erected on the columns 30, 30 ... to support the gas distributor 5 on the platform 31, and the gas distributor 5 is Rotate together with turntable A.

The controller 33 is a central processing unit CPU
, And has an address memory corresponding to each of the container mounting portions P ₁ , P _2, ... P _n . The gas distributor 5 has a single structure and includes a tank 13, a gas supply pipe 14, and a high-pressure swivel 32.
LP gas is supplied from above the turntable A via the container, and the container mounting portions P ₁ , P ₂ ...
A number of gas distribution pipes S ₁ , S ₂ ... S _n corresponding to P _n are connected in various ways. Each of these distribution pipes S ₁ , S ₂ ...
... S _n is piped to the support columns 30,30, and the support columns 30,30 ...
The flow meter 9 fixed to the above is connected, and the tip thereof is connected to the corresponding filling hose 8 of the supporting rod 12 through the connector 17.

According to the above-mentioned columns 30, 30, ..., The gas distributor 5 can be supported by utilizing the space above the air distributor 6, and the gas distribution pipe S which is diverged in various ways.
₁ , S ₂ …… S _n can be neatly piped along each of the columns 30, 30 ..., and the piping on the turntable A, which tends to be complicated, can be neatly organized, and piping work and inspection work are easy. Can be done

At the tip of each filling hose 8 is provided a filling device 8'that is attached to and detached from the upper end opening of the container T, and the filling device 8'is provided with a filling valve 10 which is opened and closed by air. . The air distributor 6 comprises an air rotary joint including an inner fixed cylinder and an outer rotary cylinder, and air hoses h ₁ and h ₂ for distributing air to the rotary cylinder.
h _n are arranged and their respective air hoses h ₁ , h ₂ ... h _n
Is connected to the corresponding filling valve 10 via the solenoid valve 15 on the turntable A, the filling valve 10 is opened when the solenoid valve 15 is turned on, and when the solenoid valve 15 is turned off. The filling valve 10 is closed and operated. Electric distributor 7
Is a hollow electric rotary joint, the wiring branched to the outer periphery of which is connected to the controller 33, and each solenoid valve 15 is connected to the controller 33 for control. still,
The solenoid valves 15 ... May be separately arranged, or may be centrally arranged in one place.

The flow meter 9 is a turbine flow meter, which measures the flow rate by counting the number of pulses formed by the flow of gas, and is connected so that its pulse signal is transmitted to the controller 33. It That is, the pulse signal of each flow meter 9 is transmitted to the controller 33 and the number of pulses is counted. When a predetermined number of pulses corresponding to the gas filling flow rate is counted, a signal for operating the solenoid valve 15 is output from the controller 33 to close the filling valve 10.

The control panel B is equipped with a central processing unit CPU and is connected to the electronic scales 3 and 4 and the input operation section, the gas filling amount is calculated based on the data of the weighing and the like from these, and the filling amount data is obtained. When the container T is sent to the controller 33 and placed on one of the container mounting portions P ₁ , P ₂ ... P _n of the table 1, the gas filling amount is stored in the address memory corresponding to the container mounting portion. It

Optical communication between the controller 33 and the control panel B is carried out through an optical fiber rotary joint 34. The optical fiber rotary joint 34 is disposed on the upper part of the air distributor 6, more specifically, on the axial center of the air distributor 6 and the electric distributor 7, and uses the central cavity of both distributors 6 and 7 to connect the optical fiber 35. Make the wiring. Further, the control panel B is connected to a host computer H arranged in an office or a management office, and required data such as a customer name corresponding to the container T and a standard filling gas amount are input / output.

In the figure, 17 'is a filling hose 21 for specific gravity correction.
Is a discharge path for discharging a defective container, and 20 is a support rod for supporting the hose 21.

The gas filling operation of the above apparatus will be described. After the operator inputs the required data regarding the container T to be carried in by the input operation section b, the containers T of predetermined rods are successively carried into the carry-in path 1 and the container T is loaded. When the container T that has reached the electronic scale 3 is transported on the carry-in path 1 and weighed on the scale 3, the data is sent to the controller 33 by the control panel B calculating the gas filling amount. Then, the container T is moved onto the turntable A, and the container placement parts P ₁ and P located at the carry-in port are moved.
When sequentially placed on ₂ ...... P _n, loading data stored in the controller 33 is stored in the address of the memory of the controller 33 corresponding to the container placement unit _{P 1, P 2 ...... P n} .
When the operator sets the filling device 8 ′ in each container T, the container T, which rotates together with the turntable A, moves to the O of the solenoid valve 15 controlled by the controller 33 during the moving operation.
A predetermined gas filling amount is filled by the N, OFF operation and the flow meter 9.

The gas filling flow rate Q in the control panel B is as follows.
Is calculated by the following equation. (W is the specified weight of gas, W ₁ is the weight of the container including the remaining amount of gas, w is the tare data of the container, r is the specific gravity of the gas, K is the temperature coefficient, and W, w, and r are input from the input operation unit in advance. After inputting, W ₁ is transmitted from the electronic scale 3 and K is transmitted from the temperature correction circuit.) After that, the filler 8 ′ is automatically detached from the container T ′ at the time when it reaches the carry-out port, and the container T ′. Is placed on the electronic scale 4, and the excess and deficiency of gas filling weight: {W ₄ = W−W ₁ '
-W; W ₁ 'is the weight data measured by the electronic scale 4}
Is calculated by the control panel B and checked, and the container T ′ within the allowable range is sent to the carry-out path 2 and the container T ′ in an excess / deficient state exceeding the allowable range is sent to the discharge path 18, respectively.

The above work is continuously carried out, and gas filling is performed.
Work is done. In the above work, the container T
Container mounting part P on the table A₁, P₂...... P_nPut on
Sometimes, the filling amount data stored in the controller 33
Is the container mounting part P₁, P₂...... P_nTo the memory address corresponding to
Since it is stored, the container mounting part P₁, P ₂...... P_nBe sure to
Even if it is not in order, for example, due to delay in weighing and loading work
There is no problem even if the container T is placed by skipping the order of the equipment parts.
There is no risk of incorrect filling due to the positioning of the container. In addition, in the present invention
For safety reasons, explosion-proof measures should be taken for electrical wiring.
Has been applied.

[0019]

According to the present invention, since the solenoid valve and the controller are arranged on the turntable, the workability of installation is improved, maintenance and inspection are easy, and the gas filling amount calculated by the control panel is calculated. Is stored in the address memory of the controller on the turntable, and the filling valve is opened / closed by communication with the solenoid valve and the flowmeter on the turntable, so the response of the signal command is improved and the filling valve is closed. And the filling amount accuracy is improved.

Further, since the controller is provided with an address memory corresponding to the container mounting portion, there is no problem even if the container mounting portion is skipped and the container T is placed due to a delay in weighing and carrying-in work. There is no risk of erroneous filling, and filling accuracy can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing the outline of the device of the present invention.

FIG. 2 is a sectional view taken along line (II)-(II) of FIG.

FIG. 3 is a block diagram.

[Explanation of symbols]

A: Turntable B: Controller 1: Carry-in path 3, 4: Electronic balance 5: Gas distributor 6: Air distributor 7: Electric distributor 8: Filling hose 8 ':
Filler 9: Flowmeter T: Container 33: Controller 34: Optical fiber rotary joint S ₁ , S ₂ ... S _n : Gas distribution pipe

Claims (1)

[Claims] 1. An electronic scale installed on a turn-in path of a turntable for weighing a container, a control panel connected to the electronic scale and having a central processing unit, and opened while the container is transferred by the turntable. And a filling valve for supplying gas from the gas distributor to the container, and a flow meter for measuring the gas flow rate at the time of gas filling, and the gas filling amount is determined by the central processing unit based on the measured value of the electronic scale. In the LP gas filling device that calculates and controls the gas filling operation, an air distributor and an electric distributor are installed in the center of the turntable, and a solenoid valve and a controller are provided around the distributor. Along with the arrangement, a required number of container mounting portions are arranged at equal intervals on the outer peripheral portion, a gas distributor is installed above the central portion, and the gas distributor is configured to rotate integrally with the table. Moth A gas supply pipe is connected to the distributor from the upper side of the table and gas distribution pipes are connected in various ways, and a flow meter and a filling valve are arranged in each of these filling hoses, and an air hose is attached to the air distributor. Connect in various ways,
These air hoses are connected to each filling valve via the solenoid valve to open and close the filling valve, and the controller is equipped with a central processing unit and has an address memory corresponding to the container mounting section. Then, each solenoid valve and the flow meter are connected correspondingly to each address of the memory, an optical fiber rotary joint is arranged on the upper axial center of both the distributors, and the central cavity of both distributors is used. A gas filling device, characterized in that the controller and the control panel are optically communicated with each other.