JPH01316599A - Liquefied gas charging apparatus - Google Patents

Abstract

PURPOSE:To increase the reliability and security of gas charging by supplying a rotary table with power of electric power supply through an explosion-proof rotary transformer and transmitting a control signal through an optical fiber and a rotary optical joint. CONSTITUTION:An explosion-proof liquefied gas charging apparatus 3 is installed in each section 2 of a rotary table 1. around the margin of an opening 15, an explosion-proof stator 16 and a rotor 17 are installed on the rotary table 1 for forming an explosion-proof rotary transformer 18. Inside of the stator 16, a stationary type column 23 is installed and a rotary optical joint 24 is installed concentrically with the rotary transformer 18. A signal line 25 composed of an optical fiber is led to the rotary optical joint 24 starting from a control unit and passing through the inside of the colum 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquefied gas filling device for filling a container such as a cylinder with a liquefied gas such as LP gas.

BACKGROUND ART When filling a container with liquefied gas, the container is placed on a weighing platform, and the weighing platform measures the total weight of the container and the gas filled into the container. Then, by detecting that the weighed value matches a set target value, it is generally sensed that the container has been filled with a predetermined amount of liquefied gas, and the filling operation is then completed. .

As a conventional liquefied gas filling device, there is one in which a plurality of the above-mentioned weighing platforms are installed in the circumferential direction on a rotary table. According to such a device, while the rotary table is rotating, a container to be filled is carried onto a weighing platform, a filling nozzle is connected to the container, and a predetermined amount of liquefied gas is filled while weighing the container. Then, after the filling nozzle is removed from the container after filling is completed, the container is carried out of the rotating table.

An electronic device such as an old FA machine is installed on the rotary table, and a slip ring is used to connect the power line and signal line between the control device outside the rotary table and the electronic equipment on the rotary table. used.

Problems that Komei is trying to solve However, when connecting FFI, F lines, and signal lines with slip rings, (1) It is weak in terms of explosion-proof safety, so it is not always possible to fill it with liquefied gas such as LP gas. (i) The reliability of the slip ring itself is low, which poses a problem in terms of the reliability of the entire system.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to solve these problems and to make it possible to connect power lines and signal lines with fewer explosion-proof problems and with sufficient reliability.

Means for Solving the Problems 1-Means for Accomplishing the above-mentioned object In order to achieve the above object, the present invention is capable of mounting a rotary table and a container to be filled, and filling the container with liquefied gas, A plurality of explosion-proof liquefied gas filling machines arranged in the circumferential direction, an explosion-proof rotary transformer that is composed of a stator and a rotor on the rotary table side, and can supply power to the rotary table side, and a control O outside the rotary table. The structure includes an optical fiber and an optical rotary joint for transmitting a control signal between the device and the equipment on the rotary table.

Function: According to this configuration, power lines are coupled by an explosion-proof rotary transformer instead of a conventional slip ring, and signal lines are coupled by an optical fiber and an optical rotary shield.

Embodiment In FIGS. 1 to 3, reference numeral 1 denotes a rotary table, and its upper surface t has, for example, eight partitions 2. It is divided into... Each compartment 2. ... are each provided with an explosion-proof liquefied gas filling ψt13.

Each liquefied gas filling machine 3 has a main body part 4 and a 31-volume part 5 on the right side. As shown in FIG. 3, the measuring section 5 is equipped with a todoroki lifting device 7 such as a load cell having a free roller 6.
A container 8 to be filled is placed on this free roller 6.

The top of the free roller 6 is one height above the top surface of the rotary table 1, and the top of the free roller 6 is one height above the top surface of the rotary table 1.
The container 8 can be easily carried out from the container.

The main body 4 is provided with an operation panel 9 for manual operation, and a keyboard 10° display section 11 and the like are arranged on this operation panel 9. 35 is a filling nozzle, 36
is a hose for this filling nozzle 35. A liquefied gas supply tube 12 is led from above into the center of the rotary table 1, and a distribution section 13 is provided at the tip of the liquefied gas supply tube 12. The distribution unit 13 and each liquefied gas filling machine 3 are
They touch each other at the distribution pipe 14! has been done.

An opening 15 is formed in the center of the rotary table 1, and a stator 16 made of a fixed coil is arranged concentrically with the rotary table 1 inside the opening 15. On the rotary table 1 that is placed around the periphery of the opening 15,
Rotor 1 composed of stator 16 and concentric coils
7 is provided. Both the stator 16 and the rotor 17 have an explosion-proof structure, and together form an explosion-proof rotary transformer 18.

A cover 19 for the rotary transformer 18 is placed on the rotor 17, and the distribution section 13 is supported by this cover 19.

20 is a control device such as a computer;
a g From 20? A tf'ifA line 21 is connected to the stator 16. The output from rotor 17 is
It is used as a power source for filling 113. Figure 1 shows rotors 17 to 8! Power line 22 to [3 is shown.

A fixed support column 23 is provided inside the stator 16,
An optical rotary joint 24 is provided at the upper end of this column 23 so as to be concentric with the rotary transformer 18 .

Reference numeral 25 denotes a signal line composed of an optical fiber, which is led from the control device 20 to the optical rotary joint 24 through the inside of the support column 23. The optical fiber 26 from the optical rotary joint 24 is connected to a repeater 27 on the rotary table 1, which converts the optical signal into an electrical signal,
The converted electrical signal is distributed from the repeater 27 to each filling machine 3 via a signal line 28.

An identification medium 29 such as a bar code is attached to the container 8 to be filled, and recognition data of the container 8, such as a 10 code of the container 8, is written into the identification medium 29.

Reference numeral 30 denotes a reading device such as a barcode reader, which is provided near the loading port 31 of the container 8 onto the rotary table 1, and is connected to the control Il device 20 via a data line 32. 33 is an unloading port from the rotary table 1.

Next, liquefied gas filling work based on the above configuration.

I will explain about it.

First, the container 8 to be filled is carried into the loading port 31, and this container 8
The reading device 30 reads out the data read out from the identification medium 29 attached to the identification medium 29 . read data,
That is, the recognition data of the container 8 is sent via the data line 32 to the flilJIIli device 2G. Control 08iW
Based on the sent recognition data, 12G reads and confirms the tare IL rating, IiX weight, 0a weight weight, etc. of the A8 capacity from the internal file based on the sent recognition data.

Thereafter, from the loading port 31, the container 8 is placed on top of the filling 13 of the compartment 2 located corresponding to the loading port 31, and the filling nozzle 35 is connected to the container 8.

Since the filling preparation is completed in this state, the operator operates the filling start switch on the keyboard 10 of the operation panel 9 of the liquefied gas filling 11113.

The filling start signal is controlled via the optical rotary joint 24, signal line 25, etc.! l device 20. In the control device 20, a filling start signal is sent to the liquefied gas filling 813 at the stage when both the aforementioned target filling weight is confirmed and confirmation that the filling start switch has been operated is performed. Then, the liquefied gas that had reached the filling machine 3 from the liquefied gas supply pipe 12 via the distribution pipe 14 is transferred to the container 8 through the filling nozzle 35 by opening the pulp inside the filling machine 3.
Filling begins.

When filling is started, the next liquefied gas filling 613 is positioned corresponding to the loading port 31. Therefore, the same operations as described above are repeated one after another for new containers 8. On the other hand, the container 8 whose filling has started is filled with the target weight of liquefied gas while the rotary table 1 rotates in this manner.

At this time, power is supplied to each filling machine 3 installed on the rotary table 1 via an explosion-proof rotary transformer 18.

Note that the power supply to the electric vJR that drives the rotary table 1 is the same as in the prior art, and therefore a description thereof will be omitted.

The data such as rated charge @heavy lifting read by the control aO device 20 based on the recognition data from the reading device 30 is read by the control aO device 20.
It is transferred from the ID device 20 to the filling machine 3 via the signal line 25, optical rotary joint 24, etc.

The filling machine 3 fills the container 8 with a predetermined amount of liquefied gas while measuring the weight of the container 8 and the liquefied gas filled in the container 8 using the measuring grip 7 based on these data.

After filling is completed, fill based on the weighing data of weighing machine 7.
A check is made for excess or deficiency of l11. If there is no excess or deficiency, the filling amount and other data are sent to the control device 20 and recorded. On the other hand, if it is determined that the filling amount is excessive, the transfer of data such as the filling amount to the control device 20 is prohibited. On the other hand, if it is determined that there is a shortage, just by operating the above-mentioned filling start switch again, only the shortage amount is additionally filled.

In this way, filling of the container 8 is completed while the rotary table 1 rotates once, and the container 8 after filling is carried out to the unloading port 33 and shipped. Note that the container 8 that is determined to be overfilled is shipped after degassing or the like is performed.

Control! Between the llV device 20 and the rotary table 1, the explosion-proof rotary transformer 18 is used to transfer the filling n3.
Since power is supplied from the power source and control signals are transmitted through the signal line 25 made of optical fiber and the optical rotary joint 24, its reliability and safety are satisfactory.

In addition, conventionally, data such as the ff1 bag value and rated filling amount of the container 8 were manually set on each filling machine, which was inconvenient. and a reading device e1 connected to the control device 20.
By using 30, the operation can be simplified. Furthermore, in the past, the over/under check after filling was carried out using a measuring device separate from the filling machine, but as mentioned above, the control 611
By also performing this check on the liquefied gas filling machine 3 connected to g=M 20, the operability and cost for filling can be improved.

In the above example, the container 8 is placed on the filling machine 3 from the loading 1] 31, and while the rotary table 1 rotates once, filling with liquid gas and checking the amount of filling is carried out, and then the container is filled from the unloading port 33. The container 8 is being carried out after the work is completed. However, if the capacity of the filling NA 113 is sufficiently large compared to the capacity of the container 8, it is possible to complete filling and checking the amount at a time when the rotary table 1 has rotated by half, for example. It is possible. In such a case, it is convenient to change the unloading position from the rotary table 1 accordingly. Alternatively, the loading position on the rotary table 1 may be changed while the unloading position remains the same. The loading and unloading positions of the containers 8 can be changed as appropriate in the control system [20] based on the data unique to the containers 8 read from the identification medium 29 by the reading device 30 as described above. can. Alternatively, the operator may determine the type of container 8 and change it manually.

Furthermore, loading, filling, checking for excess and shortage, and unloading of the first container are carried out in a part of the rotation path of the rotary table 1, and a second container is loaded in another part of the rotation path of the rotary table 1.
It is also possible to perform similar filling operations on other containers. In this way, it is efficient because a plurality of containers can be filled while the rotary table 1 rotates once.

Effects of the Invention As described above, according to the present invention, power is supplied to the rotary table by an explosion-proof rotary transformer, and control signals are transmitted by an optical fiber and an optical rotary joint. Good reliability and safety can be achieved when filling with liquefied gas.

[Brief explanation of the drawing]

Fig. 1 is a front view of a liquefied gas filling IJA device according to an embodiment of the present invention, Fig. 2 is a plan view of the same device, and Fig. 3 is a detailed view of the liquefied gas filling machine in Figs. 1 and 2. It is. 1... Rotation 7-pull, 3... Liquefied gas filling machine, 7.
...Measurement mark, 8...Container to be filled, 9...Operation panel, 18...Explosion-proof rotary transformer, 20...1lil
J control device, 24... Optical rotary joint, 25...
- Signal line (optical fiber), 26... Optical fiber, 29... Identification medium, 30... Reading device. Agent Yoshihiro Morimoto 1st figure f - 11 times also tail 3 - - J7 + - Force "Skatsu filling collapse g - 1 cover 4 @ Tsubasa q - operation nogunel tg - - pB stab L type once ψ 云 L and cis 24--one point rotary ^ I〉to 2S-1-I divination? Rai〉(cusp) 1 I/?) 26---
Marufino ζ 29--- bu;to koshi I ☆fu [I book 7o ---
tAa+Out #X Fig. 2 Fig. 3

Claims (1)

[Claims] 1. A rotary table and a container to be filled, which can be filled with liquefied gas, and a plurality of explosion-proof liquefied gases arranged circumferentially on the rotary table. An explosion-proof rotary transformer consisting of a filling machine, a stator, and a rotor on the rotary table side that can supply power to the rotary table side, and a control signal between the control device outside the rotary table and the equipment on the rotary table. A liquefied gas filling device comprising: an optical fiber and an optical rotary joint for transmitting; 2. An identification medium on which identification data of the container to be filled is recorded and attached to the container to be filled, means capable of reading the data recorded on the identification medium, and a container mounted on the liquefied gas filling machine. a manual operation unit for transmitting a filling start signal to the device; and means for starting an actual filling operation when both the signal from the reading means and the filling start signal are issued. The liquefied gas filling device according to claim 1.