JP2002297201A - Valve operation mistake preventing system and valve operation instructing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve operation mistake preventing system capable of preventing the operation mistake of a valve mounted on a conduit through which fluid such as gas is running, as much as possible. SOLUTION: A valve operation instruction statement is transmitted from a task instructing server 100 arranged in an office to a note-sized personal computer 300 of a job site operator through communication. The situation of an operation to be performed by the job site operator (for example, the measured values of the both edges of a valve from a pressure gauge 400 and a valve number read by a bar code reader 308) is transmitted to the task instructing server 100 as necessary, and automatically checked according to preset data, and checked by a supervisor. Only when the checked result is OK, the job site operator is instructed to progress to the next step. Also, a valve 406 is provided with an opening/closing lock device 406a, and only when it is confirmed that a valve to be operated is correct, the lock is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve erroneous operation prevention system and a valve operation instruction system, and more particularly to a valve erroneous operation prevention system and a valve operation instruction system for preventing erroneous operation of a valve provided in a conduit through which a fluid such as gas flows.

[0002]

2. Description of the Related Art When supplying city gas or the like, a high / medium pressure supply system is often used from the viewpoint of improving the supply efficiency. The gas sent through the conduit at high / medium pressure is decompressed by a governor (pressure regulator), and then sent to general households and the like through the conduit.

[0003] Valves for controlling the flow of gas are provided at key points in the gas conduit. When operating the valve, it is necessary to monitor the gas pressure in the conduit outside the decompression section. Therefore, a valve operation instruction which details procedures for monitoring and confirming the pressure and operating the valve is prepared. In the presence of the supervisor, field workers perform the work in accordance with the instructions of the valve operation order, and the work performer, the time of the work, the work content, etc. are recorded on paper.

[0004]

However, the valve operation process is complicated, and there is a possibility that an erroneous valve operation is performed and a gas supply failure accident occurs.

[0005] In addition, there is a problem in that the efficiency of work is poor because a supervisor is required to visit each site in valve operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a valve erroneous operation prevention system capable of minimizing erroneous valve operation.

A further object of the present invention is to provide a valve erroneous operation prevention system which can improve the efficiency of valve operation.

[0008]

According to one aspect of the present invention, there is provided a valve erroneous operation prevention system comprising: a valve operation instruction unit for sequentially instructing a field operator on a valve operation procedure; Code input means for inputting a code for identifying the valve number of the target valve,
In response to the input of the code, there is provided a judging means for judging whether or not the valve to be operated is correct, and an output means for outputting an instruction to release the valve lock based on the judgment result of the judging means.

[0009] Preferably, the code is a bar code.
According to another aspect of the present invention, a valve erroneous operation prevention system includes a detecting unit that detects a pressure near a valve, a determining unit that determines whether a detection result by the detecting unit is within an allowable range, and a determination result of the determining unit. Output means for outputting an alarm based on the information.

It is desirable that the valve erroneous operation prevention system automatically issues an instruction to the next step based on the input result.

[0011] Preferably, the valve erroneous operation prevention system comprises:
Further provided is a means for automatically printing and storing a result detected by the detection device or input of a work result of the governor operation or the valve operation.

Preferably, the detecting means detects a pressure near a valve located at a remote place (site). Preferably, the valve erroneous operation prevention system further includes a governor operation instruction means for sequentially instructing a field worker on a governor operation procedure, and a governor operation result input means for inputting a result of the governor operation, and an input of the governor operation result input means. The operation of the next step is instructed based on the result.

Preferably, the valve erroneous operation prevention system comprises:
By communicating with a terminal of a field worker, erroneous operation of a valve at a remote location is prevented.

According to another aspect of the present invention, a valve operation instruction system includes the valve erroneous operation prevention system according to any one of the above, performs operation confirmation at each operation step, and instructs operation of the next step. Perform

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A valve erroneous operation prevention system according to one embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a valve erroneous operation prevention system. Referring to the drawing, the system is mainly composed of office equipment, communication equipment, and on-site equipment.

The office equipment includes a business instruction server 100
And a modem 102. The communication facility includes a telephone line 200 and a wireless antenna 202.

The on-site equipment includes a communication device (cellular phone, PHS, etc.) 302 for communicating with the wireless antenna 202.
A modem 304, a worker's notebook personal computer (an example of a portable terminal) 300, a CCD camera 306 for photographing the operating state of the valve as a moving image in real time,
A bar code reader 308 is provided for reading a bar code from a number tag with a bar code provided near the valve.

FIG. 2 is a diagram for explaining a situation in which the present system is used. Referring to the figure, an opening / closing lock device 406a that locks the operation of the valve 406 is provided on the valve 406 to be operated.

The valve 406 is normally locked by the opening / closing lock device 406a and cannot be operated. Through the worker's laptop 300 etc.
A lock release signal is sent to the opening / closing lock device 406a, whereby the valve is unlocked and the valve 406 is released.
Becomes operable.

The valve 406 is locked by a lock pin (not shown) being engaged with the valve. The lock is released by moving the lock pin by the actuator. As a method of moving the lock pin, a method using air, a method using electromagnetic force, a method using a motor, a method using mechanical force, and the like are considered.

Also, in consideration of an emergency, a password is directly input to the opening / closing lock device 406a.
It is desirable that the lock be released.

A number tag 408 with a bar code for identifying the valve is provided near the valve 406.

FIG. 3 is a diagram showing a specific example of the number tag 408 with a bar code. As shown in the figure, the number tag 408 with a bar code describes a valve number and a bar code that can be visually recognized by an operator.

The bar code is transferred to a bar code reader 308.
, The number of the valve that the operator is trying to operate is input to the system. Thereby, it is possible to automatically determine (or the supervisor of the office) whether the valve is correct as an operation target.

A pressure gauge 400 can be connected near the valve 406 (for example, both ends, one end, etc.). The pressure measured by the pressure gauge 400 is input to the worker notebook computer 300 as digital data.

Further, the governor 500 includes a pressure sensor,
A valve opening sensor and a remote control device are provided, and the primary / secondary pressure is monitored. Data relating to the operating state of the governor, such as data from the pressure sensor and the valve opening sensor, is transmitted to the worker notebook computer 3 via the communication unit 502.
00 and the job instruction server 100. The governor 500 can be operated via the business server 100 in the office or the worker's notebook computer 300.

Further, the image of the valve when the valve is remotely operated is input to the worker notebook computer 300 in real time as a moving image using the CCD camera 306 (see FIG. 1).

The bar code data, the valve pressure data, the governor data, the valve image data, and the like input to the worker's notebook computer 300 are sequentially transmitted to the business instruction server 100 by communication. This allows the supervisor to know the status of the remote operation of the valve operation while in the office. Further, the supervisor can instruct the site worker by communication that the procedure should proceed to the next procedure (step) or that the work should be redone.

Next, an actual valve operation procedure in the present system will be described with reference to FIG. (1) First, the valve operation command recorded in the job instruction server 100 is transmitted from the job instruction server 100 to the worker notebook computer 300 (or the worker notebook computer 300 downloads). The valve operation instruction is displayed on the screen of the worker notebook computer 300, as shown in FIG.

As shown in FIG. 4, on the screen of the worker notebook computer 300, the procedure (step) of valve operation is performed.
Are instructed in order. The steps currently required by field workers are:
The image is enlarged and displayed in the center of the screen (in FIG. 4, “procedure 7” is the current procedure to be performed and is enlarged and displayed).

Thus, the field worker can operate the valve in accordance with the instructions on the screen, and the procedure can be prevented from being mistaken. Also, pressure data for each procedure,
Using the image data, barcode data, and the like, it is checked by a supervisor of the office whether the work in the procedure has been normally performed (or the system may automatically perform the check). If the check result of one procedure is OK, an instruction to proceed to the next procedure is issued to the field worker, and if the check result is not OK (NG
A) a warning is output to the field worker. For example, in the example of FIG. 4, the valve number (which is specified by the barcode reader) of the valve that the field worker tried to operate was incorrect, so that a warning to confirm the valve number again is issued. When such a warning is issued, the field worker is not instructed to proceed to the next procedure.

In the process of operating the governor 500, pressure data, valve opening degree data, and the like read by the sensor are sent to the worker notebook computer 300 and the work instruction server 100 via the communication unit 502.

(2) The field worker uses the bar code reader 308 to read the number tag 40 with a bar code in accordance with the valve operation instruction displayed on the notebook computer 300 of the worker.
8 is read.

(3) The read data is sent to the business instruction server 100 as valve number data. Here, the supervisor confirms that the valve to be operated is correct. This confirmation may be automatically performed by the worker notebook computer 300 or the work instruction server 100.

(4) As a result of checking the valve number, if the valve is correct, a valve lock release signal (such as a password) is transmitted from the work instruction server 100 to the opening / closing lock device 406 a via the worker's notebook personal computer 300.
Sent to

(5) As a result, the valve is unlocked, and the operator's notebook computer 300 instructs the next procedure. If the valve is operated before the valve lock is released, the operation cannot be performed because the lock is not released, and the sensor is operated by the open / close lock device 406a.
It is desirable that an alarm be output upon detection of an alarm.

(6) When operating the valve, the pressure is monitored by the pressure gauge 400, and the measurement result is automatically described in the instruction manual and sent to the work instruction server 100.

The valve operation procedure, pressure and the like are automatically checked by the supervisor or the operator's notebook computer 300 or the work instruction server 100 which is set and recorded in advance.
If not, a warning is issued.

(7) The operation record of the valve (operating time, operator name (or operator code), etc.) is stored in the operator notebook computer 300 and the job instruction server 100.

(8) The valve operation instruction sheet in which the operation record such as the operation time is entered is stored in the notebook computer 300 of the operator.
Is transmitted to the business instruction server 100. Also, in the worker notebook computer 300, the business instruction server 10
It is possible to print out the valve operation instruction even at 0.

Thereafter, the primary decision is made by the supervisor, and the decision by the higher-order decider follows. In addition,
This decision may be made electronically.

Note that there is an instruction such as "open the valve gradually" as an instruction of the valve operation. To check this procedure, a moving image of the valve operation is transmitted to the work instruction server 100 as shown in FIG. Can be

Next, referring to FIGS. 6 and 7, a valve operating procedure performed by a field worker will be described.

Step (1): The site worker goes to the site and turns off the power of the anticorrosion facility in accordance with the valve operation instruction displayed on the screen of the notebook computer of the worker. The work time at this time is automatically recorded. Further, the person who has performed the work inputs his / her own code (person in charge code, etc.) to the worker notebook computer 300 (or may input the code by reading the person in charge ID card). The information that the power has been turned off is
Input from the anticorrosion facility to the valve misoperation prevention system.
Based on the information, it is determined whether or not to proceed to the next procedure, and an instruction is given to a site worker.

Step (2): Next, the related governor pressure-up operation is remotely performed using the notebook computer 300 of the worker at the site. This may be done by remote control from the office. At this time, the work time and the pressure value are recorded by inputting the person in charge code. Further, the governor pressure increase information is input from the governor to the valve erroneous operation prevention system, and is used to determine whether or not to proceed to the next procedure.

Step (3): The field worker performs a stop test of the decompression base governor, and if it is lower than the back pressure (the minimum pressure required for supply) specified by the instruction, an alarm is issued. At this time, the time at which the test was performed, the pressure detected by the sensor, and the valve opening are automatically recorded. Also, the person in charge code is recorded. Further, the adjustment function inspection result is input and recorded in the valve erroneous operation prevention system. By determining the test result (pressure) by the system, it is determined whether or not the next procedure may be performed.

Step (4): The field worker goes out to the vicinity of the valve and reads the valve number using a bar code reader. As a result, the number is collated.

Step (5): If the valve numbers match, the valve lock is automatically released in the system (or the release may be performed by remote control by an operator).

Step (6): The site worker gradually closes the valve while monitoring the pressure across the valve. At this time, the time and pressure are automatically recorded. Further, a person in charge code is input. Further, if necessary,
The image of closing the valve with the CD camera is the job instruction server
0 is transferred. As a result, it is possible to visually check the valve operation in the office.

If the pressure at both ends of the valve decreases after the valve is closed, an alarm is issued to the notebook computer 300 of the site worker.

Step (7): The field worker performs the decompression work at the decompression base governor. At this time, the time, the pressure, the valve opening, and the person in charge code are recorded. The depressurized state (pressure state) is input to the system, and it is determined whether or not to proceed to the next step.

Step (8): The field worker constantly monitors the primary / secondary pressure with the governor and the valve. Pressure and time are recorded automatically. If an abnormality occurs in the pressure inside or outside the pressure reducing section, an alarm is output.

Step (9): The on-site worker closes the pressure boundary valve. That is, in the case of the EFG governor,
Close the outlet valve and check with the opening meter. In case of FG governor, close the input valve. Check with the travel meter. In the case of the RG governor, the main valve of the base governor is closed.

At this time, the time is automatically recorded. Also, the person in charge code is input and recorded. Further, an image of the valve closing by the CCD camera is sent to the work instruction server 100 as needed. Thereby, the valve closing operation can be visually confirmed in the office. An instruction is given as to whether or not to proceed to the next step according to the result of the visual check and the like.

Step (10): The field worker gradually opens the valve. At this time, the pressure gauge 400 monitors the pressure increase in the decompression section, and the time is automatically recorded in the system. Also, the person in charge code is recorded. Also here, an image of the valve opening by the CCD camera is transmitted to the job instruction server 100 as needed. Based on the data input to the system, it is determined whether or not to proceed to the next step.

Step (11): The field worker restores (operates and checks) the governor. At this time, the screen
The governor piping diagram is displayed as shown in FIG. Although the case of Reynolds governor is illustrated here, a governor figure suitable for the operation target is displayed. The on-site worker clicks on a corresponding part on the screen according to the governor operation procedure. For example, after removing the body weight, the field worker clicks on the part (2). Then, the display of the weight on the screen is erased. After closing the main valve of the governor body, the site worker clicks on the part (3). Thereby, the valve operation can be performed without fail.

The state of input / output pressure and the degree of valve opening may be confirmed at the office by the governor 500.

The test result of the adjustment function is automatically input to the system by communication. Also, the time is automatically recorded. Further, a person in charge code is input. Also, if necessary, an image from the CCD camera is transmitted to the work instruction server 1.
Sent to 00.

Step (12): The worker's notebook personal computer 300 is used to remotely lower the pressure of the related governor. The time is automatically recorded and the person in charge code is entered. Further, the pressure is confirmed by the system, and it is determined whether or not the process can proceed to the next step.

Step (13): The field worker turns on the power of the anticorrosion facility in accordance with the instruction of the valve operation instruction.
At this time, the time is automatically recorded and the person in charge code is input. Information that the power is turned on is input to the system, and it is determined that the work has been completed.

FIGS. 8 to 10 are flowcharts showing processing performed by the supervisor (operator) of the office, the notebook computer (portable mobile), and the field worker.
It is a flowchart which shows the process from confirmation of a valve number to valve closing work.

First, in step S201, the service instruction server 100 transmits a valve operation instruction. The valve operation instruction is received by the worker's notebook computer, and the field worker confirms the contents in step S203.

After that, in each stage, the operation status at the site is all sent to the job instruction server 100, and the supervisor can remotely monitor the operation status.

In step S205, the field worker prepares for a work procedure (step). Step S20
At 7, the site worker asks for the execution of the procedure. Specifically, the field worker double-clicks a cell of a procedure desired to be performed in the displayed valve operation instruction.

In step S209, the worker notebook computer 300 issues a valve number reading confirmation instruction to the field worker. Specifically, a message such as "Please check the valve No. tag" is displayed on the screen of the worker's notebook computer.

In step S211, the field worker determines the valve number. Confirm the bill and enter the barcode.

In step S213, it is determined whether the input bar code matches the code of the valve to be operated. If not, step S2
At 13a and S213b, an alarm is output to the supervisor and the site worker. Then, an instruction to read the valve number is issued again (step S209).

If the barcodes match, an instruction to release the valve lock mechanism is issued in step S215. Then, the site worker is notified that the valve lock has been released.

In step S217, an instruction to confirm the pressure at both ends of the valve is issued to the field worker. In response to this, in step S219, the field worker closes the valve while monitoring the pressure at both ends of the valve with a sensor. At this time, the measured pressure is automatically recorded.

The measured value of the pressure is sent to the work instruction server 100, and monitoring by the supervisor is performed in real time.

In step S221, relevant governor pressure data is received. In step S223, it is determined whether the pressure data is within the allowable value range. If NO, an alarm is output to the supervisor and the field worker.

If "YES" in the step S223, an input instruction of a work result is issued to a site worker in a step S225. In response to this, in step S227,
Input processing of work results is performed by field workers. Specifically, at this time, the field worker inputs only the person in charge code. Operation time, measurement pressure, etc. are all automatically recorded.

As described above, according to the present embodiment, the valve operation instruction is transmitted to the portable terminal such as the notebook computer of the worker of the field worker. The on-site worker only has to perform the operation in accordance with the procedure (step) displayed on the screen, so that the on-site operator's operation error can be reduced. In addition, a check is performed for each procedure of the valve operation instruction, and it is possible to proceed to the next procedure only when the check result is OK. Therefore, it is possible to reduce an accident due to an operation error of a field worker. is there.

Further, the supervisor can monitor the valve operation at a remote place while staying in the office, so that the supervisor does not need to go to the site and supervise as in the related art.
As a result, the number of valve operating personnel can be reduced.

In the above embodiment, the worker's notebook personal computer is used for the on-site equipment. However, a portable terminal such as a mobile phone, a PHS, a PDA (personal digital assistant) may be used instead. . Further, in the present embodiment, the valve number is specified by the bar code, but the valve may be specified by reading a code other than the bar code.

Further, the program executed by the business instruction server and the worker notebook personal computer can be recorded on a recording medium such as a CD-ROM, a floppy disk, a DVD-ROM, or a memory and provided to the user.

In the present embodiment, the work instruction server and the worker's notebook personal computer are communicated wirelessly, but wired communication may be used. Further, the communication may be performed using the Internet or the like.

Further, if the system is provided with a function of automatically inputting and outputting the result of operation of the governor operation and valve operation, or the result detected by the detecting device, the convenience is increased.

Further, according to the present invention, it is also possible to provide a valve operation instruction system for performing work confirmation at each operation step and instructing the operation of the next step.

In this embodiment, a system for preventing erroneous operation of a gas valve has been described as an example. However, erroneous operation of a valve in pipes of tap water, petroleum, chemicals, and other liquids and gases is prevented. The present invention can be applied to a system.

The embodiments disclosed this time are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a valve erroneous operation prevention system according to one embodiment of the present invention.

FIG. 2 is a diagram for explaining a situation in which the system is used.

FIG. 3 is a diagram showing a specific example of a number tag with a bar code.

FIG. 4 is a view showing a valve operation instruction document displayed on a screen of an operator's notebook computer.

FIG. 5 is a diagram showing a state in which a moving image of a valve operation is sent to the work instruction server 100.

FIG. 6 is a flowchart for explaining a valve operation procedure performed by a field worker.

FIG. 7 is a flowchart following FIG. 6;

FIG. 8 is a flowchart showing a procedure performed by a supervisor (operator), a worker's notebook computer, and a field worker.

FIG. 9 is a flowchart following FIG. 8;

FIG. 10 is a flowchart following FIG. 9;

FIG. 11 is a diagram showing a specific example of display of a governor piping diagram.

[Explanation of symbols]

100 business instruction server, 102 modem, 200 telephone line, 202 wireless antenna, 300 worker notebook computer, 302 mobile phone, 304 modem, 306
CCD camera, 308 barcode reader, 400
Pressure gauge, 406 valve, 406a open / close lock device, 4
08 Number tag with barcode, 500 governor, 502
Communication unit.

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Akira Fukuda 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Prefecture F-term in Osaka Gas Co., Ltd. (reference) 3J071 AA02 AA12 AA13 BB11 BB14 CC11 DD36 EE02 EE06 EE07 EE24 FF03 5H209 AA11 BB03 CC09 CC11 CC13 DD05 DD08 FF06 GG05 GG06 GG08 GG11 HH02 HH28 JJ09

Claims (8)

[Claims] 1. A valve operation instructing means for sequentially instructing a field worker on a valve operating procedure, a code inputting means for inputting a code for identifying a valve number of a valve to be operated from a site, and a response to the input of the code A valve erroneous operation prevention system comprising: a determination unit that determines whether a valve to be operated is correct; and an output unit that outputs an instruction to release a valve lock based on a determination result of the determination unit. 2. The valve erroneous operation prevention system according to claim 1, wherein the code is a bar code. Detecting means for detecting pressure in the vicinity of the valve; determining means for determining whether a result of detection by the detecting means is within an allowable range; and outputting an alarm based on the result of determination by the determining means. A valve erroneous operation prevention system comprising output means. 4. The valve erroneous operation prevention system according to claim 3, wherein said detection means detects a pressure near a remote valve. 5. A governor operation instruction means for sequentially instructing a field worker on a governor operation procedure, and a governor operation result input means for inputting a result of the governor operation, wherein the input result of the governor operation result input means is further provided. 5. The valve erroneous operation prevention system according to claim 1, wherein an operation of a next step is instructed based on the operation. 6. A valve erroneous operation according to claim 1, further comprising means for automatically printing and storing a result detected by the detection device, or input of a work result of governor operation, valve operation. Prevention system. 7. The valve erroneous operation prevention system according to claim 1, wherein erroneous operation of a remotely located valve is prevented by communicating with a terminal of a field worker. 8. A valve operation instruction system comprising the valve erroneous operation prevention system according to claim 1, wherein the operation confirmation is performed for each operation step, and the operation instruction of the next step is issued.