JPH06187323A - Plant facility diagnostic device - Google Patents

Abstract

PURPOSE:To obtain a diagnostic result with high reliability by correcting patrol data at the time of a diagnosis of the facilities of a plant into a proper value at need and diagnosing the facilities under optimum conditions. CONSTITUTION:This diagnostic device is provided with a patrol data input device 1 which inputs the patrol data at the time of plant patrol inspection on an interactive basis, a patrol data storing means 5 which stores the patrol data inputted to the patrol data input device 1, a patrol data extracting means 9 which takes specific patrol data among history patrol data stored in the patrol data storage means 5 at a request to display the patrol data and generates an extracted data file, a data altering means 11 which alters the patrol data in the extracted data file according to an alteration request from a customer engineer, a facility diagnostic means 13 which diagnoses the facilities according to the patrol data in the extracted data file at a facility diagnosis execution request from the customer engineer, and a display means 15 which displays the patrol data in the extracted data file and the diagnostic result from the facility diagnostic means 13 on the screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant facility diagnostic apparatus for performing facility diagnostics in a power plant, for example, based on data of a plant inspection inspection carried out as a part of maintenance work.

[0002]

2. Description of the Related Art Conventionally, in equipment maintenance work at a power plant, check items are written several times a month by a field technician who is a skilled technician in order to confirm the operating status of equipment and the presence or absence of equipment component abnormality. Handwritten with a recording sheet,
Or, collect the patrol data using a portable data input device such as a handy terminal, compare the data with the threshold value unique to each data based on the data, and check the equipment according to the judgment of maintenance personnel. If it was found to be abnormal, repairs were being made to address this.

[0003]

When a computer is used for this equipment diagnosis, maintenance personnel collect the measurement data to be diagnosed in the power plant on site. Among the inspection data, there is data that is judged by the five senses of the maintenance staff using the readings of the meter and the auditory, visual, and olfactory peculiar to the inspection of the power plant, and is manually registered in the handy terminal. Therefore, there may be a case where an erroneous input or an omission is made, or a maintenance person cannot pass or fail to judge whether the maintenance is normal or abnormal on the spot. Therefore, when the facility diagnosis is performed using such patrol data as it is, the data that originally does not get caught in the threshold value deviates from the threshold value, or there is a path or failure as shown in FIG. In order to
Until now, the diagnostic result may be "unknown", and it has not been possible to obtain a reliable diagnostic result. FIG. 6 shows a logical expression of the phenomenon of high cooling water temperature. In the figure, A indicates the collected data at the time of the inspection inspection, and B and C indicate independent rules. For example, B: lubricating oil temperature measured value> lubricating oil temperature upper limit value (60 ° C.) C: cooling water temperature measured value> cooling water temperature upper limit value (60 ° C.).

The present invention has been made in consideration of such a point, and it is displayed in advance on the screen to confirm whether there is any erroneous input or omission of the target inspection data before the facility diagnosis is performed. However, by changing the patrol data that seems to be erroneous input to an aptitude value, or by entering an aptitude value that is estimated from other conditions in the item that was missed or passed, a more reliable diagnosis result can be obtained. It is an object of the present invention to provide a plant equipment diagnostic device that can obtain the above.

[0005]

That is, a plant equipment diagnostic apparatus of the present invention stores a patrol data input device for inputting patrol data collected during a plant patrol inspection, and patrol data input to the patrol data input device. Patrol data storage means for sequentially storing, and specified patrol data is extracted from the history patrol data stored by the patrol data storage means based on a patrol data display request from a maintenance staff,
Patrol data extraction means for creating an extraction data file,
The inspection data extracted by this inspection data extraction means is modified according to the change request from the maintenance staff, and the changed data is written into the extracted data file, and the extracted data file is converted into the extracted data file by the facility diagnosis execution request from the maintenance staff. Equipment provided with equipment diagnosis means for performing equipment diagnosis based on the recorded inspection data, and display means for displaying on-screen the inspection data extracted by the inspection data extraction means and the diagnostic result issued by the equipment diagnosis means. Is characterized by.

[0006]

In the above structure, the patrol data input device is
For example, a portable handy terminal is used, and the data read by the maintenance staff in an interactive manner and used to judge the meter readings and the device status are registered therein.

The patrol data storage means reads the patrol data registered in the patrol data input device and stores it in a patrol data file together with past data. The patrol data extraction means receives the patrol data display request from the maintenance staff, extracts the specified patrol data from the patrol data file,
The data is displayed on the display device by the display means and is simultaneously stored in the extracted data file.

The data changing means accepts a change request from the maintenance staff for the inspection data displayed on the display device, and writes the change data input by the maintenance staff in the extracted data file.

The equipment diagnosing means makes equipment diagnosis based on the inspection data stored in the extracted data file in response to a diagnosis execution request from the maintenance personnel, and displays the result on the display device by the display means.

As a result, the inspection data at the time of equipment diagnosis of the plant is confirmed by the maintenance personnel and corrected to an appropriate value if necessary, so that equipment diagnosis can be performed under optimum conditions and high reliability is achieved. The diagnostic result can be obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the plant equipment diagnostic apparatus of the present invention. In the figure, 1 is a patrol data input device that collects patrol data, and 3 is an equipment diagnosis processing device that processes the data collected by the patrol data input device 1 to diagnose plant equipment.

The facility diagnosis processing device 3 is provided with a patrol data storage means 5 for taking patrol data from the patrol data input device 1 and storing it in the patrol data file f1. The history of patrol data is stored in the patrol data file f1. Reference numeral 7 is an input / output device for interacting with maintenance personnel, and comprises a display device 7a such as a CRT and an input device 7b such as a keyboard and a mouse.

Further, in the equipment diagnosis processing device 3, the inspection data extracting means 9 for extracting inspection data from the inspection data file f1 based on the request from the maintenance personnel inputted by the input / output device 7, and the inspection data extracting means. By the extracted data file f3 for storing the inspection data extracted in 9, the data change means 11 for rewriting the data in the extracted data file f3 based on the data change request from the maintenance staff, and the equipment diagnosis execution request from the maintenance staff. Equipment diagnosis means 13 for executing equipment diagnosis using the data in the extracted data file f3, diagnosis result file f5 for saving the diagnosis result output from the equipment diagnosis means 13, and inspection data or diagnosis in the extracted data file f3 Display means 15 for displaying the diagnosis result in the result file f5 on the display device 7a is provided.

Next, the operation of the plant equipment diagnostic device having the above-mentioned configuration will be described. First, at the time of plant inspection, maintenance personnel collect inspection data, such as generator output, bearing temperature and other meter readings and data that determine the condition of the equipment, at the site,
For example, it is input and registered in the portable patrol data input device 1 of the handy terminal in an interactive manner.

FIG. 2 and FIG. 3 show the flow of a series of processes in the equipment diagnosis processing device 3. The following is a description with reference to these figures, and the inspection data registered in the inspection data input device 1 is: It is read by the inspection data storage means 5 of the equipment diagnosis processing device 3 (step 21) and stored in the inspection data file f1 (step 22). In the inspection data file f1, the inspection data collected at the time of inspection inspection of the plant is sequentially and chronologically saved in the order of date.

The inspection data extraction means 9 determines whether or not a display request for the inspection data from the maintenance personnel is input from the input / output device 7 (step 23). The patrol date attached to the patrol data stored in f1 is taken out,
A screen as shown in FIG. 4 is displayed on the display device 7a via the display means 15 (step 24). Next, when the maintenance staff selects a desired patrol date (measurement date) 31 from the date data displayed on the display device 7a with a mouse or the like and selects the data display execution button 33 on the screen (step 25),
The inspection data extraction means 9 extracts the inspection data of the date designated by the maintenance staff from the inspection data file f1 (step 26) and saves it in the extracted data file f3 (step 27). When the inspection data is stored in the extracted data file f3, the display means 15 calls the inspection data in the extracted data file f3 and displays it on the display device 7a in a screen as shown in FIG. 5 (step 28). At the same time, the same patrol data is passed to the data changing means 11.

The data change means 11 receives the inspection data displayed on the display device 7a from the display means 15, and if there is a data change request from a maintenance person (step 2).
9) The inspection data is changed (step 30) and saved in the extracted data file f3 (step 31). This data change request is the measured value 3 of the item changed by the maintenance personnel in FIG.
5 is selected with a mouse or the like, data is changed by key input, and then the data change button 37 is selected, so that the data change means 11 is notified. The data changing unit 11 receives the data number information indicating the number of data at which the inspection data is changed, the change value and the data change request signal, and the point of the corresponding data number in the inspection data received from the display unit 15. Is replaced with the changed value and written into the extracted data data file f3.

When the maintenance staff confirms the inspection data on the screen of the display device 7a as shown in FIG. 5 and selects the equipment diagnosis execution button 37 with the input device 7b such as a keyboard or mouse, the equipment diagnosis execution request is issued. The equipment diagnostic means 13 is notified (step 32). Upon receiving the equipment diagnosis execution request, the equipment diagnosis unit 13 extracts the inspection data from the extracted data file f3 (step 33), and executes the equipment diagnosis based on the extracted inspection data (step 34). The result of the equipment diagnosis made by the equipment diagnosis means 13 is stored in the diagnosis result file f3 (step 35) and displayed on the display device 7a by the display means 15 (step 3).
6).

If the maintenance personnel confirms the diagnosis result displayed on the display device 7a and selects the end button in step 37, a series of processing is ended. Further, when the continue button is selected in step 37, the screen as shown in FIG. 5 is displayed again on the display device 7a, the process returns to the data changing process of step 29, and the facility diagnosis process is executed in the same manner. It

In step 25, by selecting the past measurement date on the screen shown in FIG. 4, the past data is displayed in a list, and the inspection data is changed and the facility diagnosis is executed based on the inspection data. Naturally, it is also possible to obtain a diagnostic result.

As described above, in the above configuration, since the inspection data collected by the maintenance personnel is displayed on the display device 7a, erroneous input or omission may be made to the inspection data to be targeted before performing the facility diagnosis. You can check if there is such a thing. In addition, if there is erroneous input or patrol data that seems to be missed, change it to an appropriate value, or use data that is unique to the patrol of the power plant as a value estimated by maintenance personnel from the data around it (for example, cooling water If the outlet temperature is unknown and the cooling target oil temperature is 50 ° C, it is assumed that the cooling water outlet temperature is between 40 and 50 ° C), and equipment diagnosis can be performed based on that data. Since the means 13 receives the equipment diagnosis execution request from the maintenance staff and executes the equipment diagnosis, it is possible to eliminate the equipment diagnosis due to an error or deficiency of the input data and obtain a more reliable diagnosis result.

In addition to the above, in the above embodiment, the cause of the failure can be simulated by arbitrarily changing the inspection data of the device or the like and performing the facility diagnosis.

[0024]

As is apparent from the above description, according to the present invention, it is possible to display on the display device whether or not there is an erroneous input or omission of the target inspection data before performing the facility diagnosis. By doing so, it is possible to check the data to be diagnosed in advance, change the inspection data that seems to be erroneous input or missed input to an appropriate value, or input an analogy value to the path data during plant inspection and execute facility diagnosis. As a result, equipment diagnosis due to deficiencies or errors in input data can be eliminated, and more reliable diagnosis results can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a plant equipment diagnosis apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a first half processing flow of the equipment diagnosis processing device according to the present invention.

FIG. 3 is a flowchart for explaining the latter half of the processing flow of the equipment diagnosis processing device according to the present invention.

FIG. 4 is a diagram illustrating a screen for displaying desired patrol data.

FIG. 5 is a diagram illustrating a display screen of a patrol data list.

FIG. 6 is a diagram for explaining a problem in a conventional plant equipment diagnostic apparatus.

[Explanation of symbols]

 1 ...... Patrol data input device 3 .... Equipment diagnosis processing device 5 ...... Patrol data storage means 7 ......... I / O device 9 ......... Patrol data extraction means 11 ......... Data change means 13 ... Equipment diagnostic means 15 ... Display means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigenobu Shirata No. 1 in Toshiba Fuchu factory, Fuchu-shi, Tokyo (72) Inside the Fuchu factory, Toshiba Corp. (72) No. 1 in Shiba, Toshiba, Fuchu factory, Tokyo

Claims (1)

[Claims] 1. A patrol data input device for inputting patrol data collected during a plant patrol inspection, patrol data storage means for sequentially storing patrol data input to the patrol data input device, and patrol data from a maintenance staff. Based on the display request of the inspection data storage means, the inspection data extraction means for extracting the specified inspection data from the history inspection data stored by the inspection data storage means and creating an extraction data file, and the inspection data extracted by this inspection data extraction means Data modification means for modifying the modified data according to the modification request from the maintenance staff and writing the modified data to the extracted data file, and equipment based on the patrol data recorded in the extracted data file according to the equipment diagnosis execution request from the maintenance staff. Facility diagnosis means for performing diagnosis, and the inspection data extracted by the inspection data extraction means Plant equipment diagnosis device according to claim diagnostic results issued by viewing the data and equipment diagnosis means further comprising a display means for displaying on the screen.