JPH06258201A - Analyzing method for delivery gas - Google Patents

Abstract

PURPOSE:To prevent an artificial mistake by automatically carry out all the work except connection of a container to an analyzer. CONSTITUTION:At first, a supplying valve 10 is closed while a purging valve 9 is opened, so that a gas from a tank lorry 1 passes a pipe 4 and is exhausted with impurities inside the pipe 4 from the purging valve 9. After the elapse of fixed time, the purging valve 9 is closed and the supplying valve 10 is opened at the same time, and the gas flows into the analyzer 3, so that analysis is started. After predetermined time is passed, the supplying valve 9 is closed. The gas components are analyzed, and the analysis data are transmitted to a control device 6 by a cable 11. The analysis data inputted to the control device 6 are compared with the standard gas value stored previously, and then, analysis values are rearranged according to the predetermined format. The analysis value are printed in the specified format by a printer 7, so that an analysis table is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas analysis method immediately before shipping when a liquefied gas is shipped by a tank lorry or the like, directly from the tank lorry.

[0002]

2. Description of the Related Art When shipping a gas filled in a container from a gas manufacturing factory or the like, it is necessary to prepare an analysis table for examining gas components and submit it together with the gas to the delivery destination.

Therefore, it is necessary to prepare a shipping gas analysis table before departure. Conventionally, an analysis table has been created by visually reading the values of the analyzer and writing the values in the table.

[0004]

In the method described above, there are times when erroneous reading or writing errors occur.
If there is such an error in the analysis table, it may become a serious responsibility of the shipping side and labor is required. Therefore, improvement thereof has been desired.

In view of the above, it is an object of the present invention to provide an analysis method capable of automatically analyzing shipping gas without manpower.

[0006]

As shown in FIG. 1, the means for solving the problem according to the present invention detects the connection between the container 2 filled with the shipping gas and the analyzer 3 with the pipe 4, and the connection of the pipe 4. Then, a step of opening the purge valve 9 for a predetermined time to replace the gas in the pipe 4 with the shipping gas, and a step of closing the purge valve 9 and opening the supply valve 10 for sending the shipping gas to the analyzer 3 for a predetermined time. , The step of analyzing the sent gas, the step of comparing the analyzed gas data with that of the standard gas to determine whether it is within the reference range, and the identification data of the shipping gas entered in advance In addition, the shipping gas is analyzed by a step of separately outputting the analyzed data according to the determination result and a step of removing the pipe 4 connecting the container 2 and the analyzer 3.

[0007]

In the above means for solving the problems, when the container 2 filled with the shipping gas and the analyzer 3 are connected by the pipe 4, the purge valve 9 is opened to discharge the gas and the like remaining in the pipe 4. The tube 4 is filled with the gas to be analyzed. And
The purging valve 9 is closed and the supply valve 10 is opened to send gas to the analyzer 3.

The analyzer 3 analyzes the sent gas and outputs the analysis data to the controller 6. The control device 6 compares the analysis data with the data of the standard gas to determine whether or not it is within the allowable range, and adds the determination result to the analysis data based on the identification data of the shipping gas input in advance. Create an analysis table. Then, the analysis table is output from the printer 7. When the analysis work is completed, the tube 4 connected to the analysis device 3 is removed from the container 2.

[0009]

EXAMPLE As shown in FIG. 3, the automatic gas analyzer according to the present invention directly analyzes the components of the shipping gas such as liquefied nitrogen and liquefied oxygen filled in the container 2 of the tank truck 1 to prove the quality. A table is created, and an analyzer 3 for analyzing gas components, a pipe 4 for supplying an analyzing gas from the container 2 to the analyzer 3, and a connection between the analyzer 3 and the container 2 are detected. It comprises a detection sensor 5, a control device 6 for processing the data analyzed by the analysis device 3 to create an analysis table, and a printer 7 for printing the created analysis table.

The analyzer 3 uses two general gas analyzers and is built in the control panel 8. And
Each analyzer 3 analyzes a different composition.

The pipe 4 connects the container outlet of the tank truck 1 and the gas inlet of the analyzer 3, and a purge valve 9 for replacing the gas in the pipe with the shipping gas and the shipping gas to the analyzer 3. The feed valve 10 for feeding is interposed.

Each of the valves 9 and 10 is a two-position electromagnetic switching valve, is provided for the pipe 4 in the control panel 8, and the purging valve 9 is located closer to the tank truck than the supply valve 10. .

The detection sensor 5 is composed of a pressure sensor for detecting the pressure in the pipe 4, and when the container 2 and the control panel 8 are connected by the pipe 4 and gas is supplied from the tank truck side, the pressure in the pipe 4 rises. Then, this pressure increase is detected.

A 32-bit or 16-bit personal computer is used as the control device 6, and is connected to the control panel 8 and the printer 7 by a cable 11. In particular,
The analyzer 3 is connected via the A / D converter 12.

The control device 6 drives and controls the analysis device 3, the purging valve 9 and the supply valve 10 based on a predetermined program. When the detection sensor 5 detects the connection of the pipe 4, each valve 9, A function of opening and closing 10, and a function of judging whether or not the analysis data from the analyzer 3 is within the allowable range of the reference data of the standard gas stored in advance,
It has a function of outputting the identification data of the shipping gas such as the vehicle number of the tank truck 1 and the name of the delivery destination inputted from the keyboard or the magnetic card in the form of an analysis table of a predetermined format together with the analysis data.

Further, the control panel 8 is connected to an operation panel 13 provided with a start button, a stop button, a magnetic card reader and the like, and an operation of the operation panel 13 causes the control device 6 to operate. The position of the operation panel 13 is the tank truck 1
Workability is good if it is placed in a safe place near the connecting pipe 4.

Next, the procedure of automatic gas analysis will be described with reference to FIGS.

First, the control panel 8 is attached to the container 2 of the tank truck 1.
Connect the tube 4 from. Then open the valve of container 2,
Fill the tube 4 with shipping gas. At this time, the purge valve 9 is in a closed state.

As the pressure in the pipe 4 rises, the detection sensor 5 detects this and outputs a detection signal to the control device 6. Then, the control device 6 detects that the analysis device 3 and the container 2 are reliably connected. This informs the operator that the analysis is ready to start.
Here, press the start button on the control panel 13 (turn it ON)
Then, the signal is transmitted through the cable 11 and input from the control panel 8 to the control device 6. As a result, a series of gas analysis steps up to the preparation of the analysis table is started.

First, the supply valve 10 is closed and the purge valve 9 is opened. And the gas from the tank truck 1 is pipe 4
And is discharged from the purge valve 9. At this time, impurities in the pipe 4 are also discharged, and the pipe 4 is filled with the gas to be analyzed.

After a lapse of a predetermined time, the purge valve 9 is closed and the supply valve 10 is opened at the same time. The gas flows into the analyzer 3 and the analysis is started. After a predetermined time has elapsed, the supply valve 10 is closed.

When the gas component is analyzed by the analyzer 3, the data of the analog signal is converted into a digital signal and transmitted to the controller 6 by the cable 11. The analysis data input to the control device 6 is compared with the value of the standard gas stored in advance. The analytical values are sorted according to a predetermined format.

Further, the number or delivery destination of the tank truck 1 to be transported is input to the control device 6 using a keyboard or a magnetic card.

The control device 6 judges whether or not the analysis data is within the allowable range for the standard gas, and if it is within the allowable range so that the quality can be understood, it is black and outside the allowable range. In this case, an output signal is sent to the printer 7 so that it prints in red. Then, the printer 7 prints in a predetermined format to complete the analysis table.

When the analysis is completed, the pipe 4 is removed from the tank truck 1 and the shipping gas is shipped with an analysis table attached.

As described above, since all the other work is automatically performed except that the connection between the tank truck and the analyzer is manually performed, human error such as erroneous reading of data or erroneous description can be prevented. Therefore, the efficiency of analysis work can be improved.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention.

In this embodiment, the container and the pipe of the tank lorry are detached and attached, and the vehicle number and the delivery destination name of the tank lorry are input manually. The reading number is also read using a reading sensor, and the input of the delivery destination is linked with a comprehensive management system (for example, a production management system at the time of order receipt) so that the operator can press the start button on the operation panel It is also possible to complete the process from filling the gas to creating the analysis table.

Further, not only the tank lorry container but also a gas cylinder may be connected to the analyzer to analyze the gas in the gas cylinder.

[0030]

As is apparent from the above description, according to the present invention, all the other analysis-related work is automatically performed except that only the connection between the container and the analyzer is manually performed. It is possible to prevent human error such as erroneous reading and description error, and improve the efficiency of analysis work.

[Brief description of drawings]

[Figure 1] Flow chart of shipping gas analysis work

FIG. 2 is a control flowchart of the control device.

[Fig. 3] Configuration diagram of an automatic gas analyzer

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank truck 2 Container 3 Analyzing device 4 Tube 5 Detection sensor 6 Control device 7 Printer 8 Control panel 9 Purging valve 10 Supply valve 11 Cable 12 A / D converter 13 Operation panel

Claims (1)

[Claims] 1. A step of connecting a container filled with shipping gas and an analyzer with a pipe, and a step of opening a purge valve for a predetermined time when the connection of the pipe is detected to replace the gas in the pipe with the shipping gas. , Closing the purge valve and opening the supply valve for sending the shipping gas to the analyzer for a predetermined time, analyzing the sent gas, and comparing the analyzed gas data with the standard gas data The step of judging whether it is within the reference range, the step of outputting the analyzed data together with the identification data of the shipping gas that has been input in advance according to the judgment result, and the pipe connecting the container and the analyzer are removed. A method of analyzing shipping gas, comprising the steps of: