JP2001356813A - System for supporting plant maintenance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for allowing even an inexperienced maintenance manager to easily operate an inspection task in a complicate plant structure and under complicate conditions accompanied with this as shown in a drawing. SOLUTION: In this plan maintenance supporting system using a computer, a plant to be managed is constituted of a three-dimensional model which can be viewed from a free point of view, and a function for bridging the three- dimensional model and a data base for maintenance control is set on a menu, and the prescribed maintenance control data are linked to each site.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance support system for efficiently and centrally managing maintenance management and safety management of various plants. More specifically, the present invention relates to a maintenance management system for a plant having a complicated configuration such as an oil refinery plant.

[0002]

2. Description of the Related Art The maintenance of plants having complicated piping and vessels, such as petroleum refining, petrochemical, and nuclear power plants, is carried out with the aim of long-term stable operation of equipment, such as reactors, various towers, heat exchangers, etc. Various non-destructive inspections are periodically conducted for each part of the pressure vessel and piping system to monitor the equipment status.

In particular, with respect to the thickness decrease due to corrosion and abrasion of the apparatus, constant thickness measurement is continuously performed, and the remaining life is predicted from the thinning tendency of the thickness. Further, in response to diversification of products and raw materials, sophistication of operation such as high-load operation, and severer operation, more sophisticated and more detailed equipment maintenance than ever before is required. For this reason, the amount of data handled in the maintenance work is steadily increasing, and is becoming enormous.

[0004] In order to support such maintenance work, the inventors of the present application have proposed a navigator (such as an inspection drawing) for a facility maintenance management work in accordance with the flow of diagnosis work by a maintenance technician. (Guidance screen), a maintenance system and inspection information required for diagnosis can be browsed on the same screen, and a search system has been developed to support various inspection tasks from the measurement of wall thickness, the planning of non-destructive inspection plans to the management of inspection history. .

[0005] In particular, in carrying out this system, studies have been made on a system for displaying control items in a plant, for example, a wall thickness measurement point on a screen. A search system that digitizes figures such as drawings to create figure data, creates a database of information on each section of the figure, creates an information database, and combines the figure data with the information database to enable computer processing of information search. developed.

More specifically, as described in Japanese Patent Application Laid-Open No. H6-149953 (title of the invention: method for setting switch buttons for instruction), which has already been filed by the present applicant, means for digitizing graphics are provided. Separately, an instruction switch button is set, and software and various memories are prepared as switch button setting means.

[0007]

However, the method disclosed in Japanese Patent Application Laid-Open No. H6-149953 is intended for maintenance management using a two-dimensional drawing. For a maintenance manager who is not always familiar with such IT technology, it is difficult to perform a search operation using this screen display. In the future, it is thought that a more and more complicated plant structure and complicated drawings will be increased, and under such conditions, a system that can be easily inspected even by an unskilled maintenance manager is desired.
An object of the present invention is to provide a system that can efficiently perform maintenance management even in such a complicated plant system without requiring a skilled technician.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a plant maintenance support system using a computer comprises a three-dimensional model which allows a plant to be managed to be viewed from a free viewpoint. A system for setting a function for bridging the three-dimensional model of the three-dimensional model with a maintenance management database on a menu and linking predetermined maintenance management data to each part is provided.

According to the present invention, a plant to be managed is constituted by a three-dimensional model so that the plant can be viewed from any viewpoint. Each part of the three-dimensional model can be registered as a maintenance place, and various maintenance management data can be linked. By instructing a specific part of the image displaying the three-dimensional model, the maintenance management data can be called.

That is, the present invention is a system for setting a function for bridging a three-dimensional model and a maintenance management item on a menu screen and linking predetermined parts with predetermined maintenance management data. Here, the part that bridges the maintenance management item and the three-dimensional model is a component having an attribute linked to a means for digitizing a figure, specifically, an elbow, a nozzle, or the like that matches the original image of the real thing. Refers to part of the drawing.

[0011] Through the part that can image this real thing,
Maintenance managers can approach maintenance management data,
Even if you did not enter the search item with the command of the search function of the 3D model viewer and displayed the related maintenance management data, which could only be understood by experts as before,
The inspection can be performed in a simple and easy way.

Searching using a three-dimensional model is particularly effective when searching and monitoring from multiple directions in multiple directions. At the same time, by providing highlights such as colors at places where the wall thickness is severe, more visual inspection is effective by utilizing the three-dimensional model. The present invention can efficiently perform maintenance management even in such a complicated plant system without requiring a skilled technician.

FIG. 1 shows a conceptual diagram of the system of the present invention.
The three-dimensional model and the inspection management list are bridged through the menu screen where the parts are set, and the maintenance management data is displayed on the target part of the three-dimensional model with one click of a button from the maintenance management item table displayed on the menu Can be displayed. In addition, by allowing the inspection results to be called from the model screen, contrary to this work flow,
The maintenance manager can easily understand the surrounding situation by easily managing the maintenance data and viewing the model.

The maintenance support system is provided with means for linking predetermined maintenance management data to each part. That is, there is provided a means for newly or additionally specifying a dangerous place to be subjected to maintenance management.
In the case of a maintenance site such as an oil plant, the link target must be selected by different standards and methods for each individual plant. To that end, the maintenance manager newly
Alternatively, when an inspection item and an inspection point are additionally set, the inspection object is clicked on the screen of the three-dimensional model viewer to specify the linked inspection data. Accordingly, a function of writing data for setting a link in the text file of the attribute data of the motel and the inspection management database is provided.

[0015]

FIG. 2 is a flowchart showing the operation of an example of the system according to the present invention. System 1 of the present invention
Consists of three-dimensional model sections 2 to 9 and maintenance management data sections 11 to 14. The linking of the sections is performed by a graphical user interface (hereinafter, referred to as GUI) setting unit 5. An operation example in which a maintenance engineer actually performs inspection / diagnosis work using the system of the present invention will be described.

First, a predetermined initial menu 2 is opened, and a main menu of the three-dimensional model 3 of the entire plant apparatus is called. The basic function of the invention is fulfilled by the part having the attribute as a key embedded in the menu. In other words, this part is a common key that has attributes indicating inspection items such as pipe elbows and reducers, inspection data, inspection locations, etc., and links maintenance management data such as inspection management lists with 3D models. Refers to the part with. A predetermined menu to be searched is selected and selected from the main menu 4 of the maintenance support system 1 called via this part.

As shown in FIG. 1, the main menu 4 has a function of bridging a database of management items such as daily inspection items in a plant inspection with a three-dimensional model and is displayed on the menu. The target part of the three-dimensional model can be displayed on the screen with one click of a button from the management item table. By operating through this menu screen, the maintenance manager can very easily call up the inspection result even for a complicated three-dimensional model. In addition, by enabling the inspection result to be called from the model screen, the inspector can easily understand the surrounding situation by managing the inspection data and viewing the model.

The retrieved main menu search conditions are sent to the GUI setting unit 5 and registered. On the other hand, this GUI setting unit is searched by the information search routine 9 from the information database 14 in the maintenance management section described later, and the storage location of the called data is presented. When the data of the target part needs to be updated, a means for linking the maintenance management data to the predetermined parts is provided to instruct the main part 4 to zoom in on the selected plant three-dimensional model 6A. Sent to the screen 7A.

It is desirable to add a function of writing data for setting a link to a text file of model attribute data and a maintenance management database by designating inspection data to be linked to the system.
For example, when a maintenance technician sets a new maintenance item / location, the maintenance technician clicks an object on the three-dimensional model viewer screen. As a result, the inspection work can be performed without the inspection staff having to learn CAD operations or complicated data editing.

For the selected menu, the plant 3D model of the entire inspection target apparatus is displayed on the display 6A, and the screen is zoomed up. On the other hand, the assigned portion is sent to the search key detection routine 8 while giving the attributes of the entire apparatus. Similarly, a search item zoomed up on the screen 7A is selected and sent to the search key detection routine 8. This search key is sent to an information search routine 9 which serves as a contact point when a desired information search is performed.

Next, the maintenance management data section used in the present invention will be described. In this section, data such as various predetermined measurements, various inspection results and maintenance inspection contents and results are sequentially input to the measurement data input unit 11 as measurement data. These are changed and updated as needed. Such information is secondarily processed (data registration processing, data analysis evaluation, forecasting, etc.) by fusing it with standard management data such as a threshold value for processing management and an inspection cycle sent from the standard registration database 13. The processing unit 12 performs a life calculation process, and is finally stored in the information database 14 as history data, evaluation information, diagnosis information, and pre-life information.

This data is, as described above, one of G
The path is sent to the GUI setting unit 5 for UI setting. On the other hand, the information database receives the information search search from the information search routine 9 and sends the search result to the information search routine. In order to display the search result, the inspector displays the component target of the entire apparatus on the plant three-dimensional model 6B so as to be visually recognized. Zoom up the screen as needed. On the other hand, information (for example, a wall thickness trend graph) is displayed on the screen for each selected item, and the inspection proceeds.

As an example of a method of forming an object constituting a plant in a virtual three-dimensional space on an image display device, there is a method of expressing the object as a polyhedron, that is, a polygon. The modeled three-dimensional figure is represented by (X, Y, Z) coordinates of each vertex. The three-dimensional figure modeled in the virtual space can be displayed on the screen by associating it with the image display space (specifically, the screen of the variable display device). When changing the viewpoint and zooming in or out,
The projection center in the perspective transformation, that is, the viewpoint is coordinate-transformed,
The viewing direction of the moving object can be changed. Zooming in is performed when the viewpoint is closer to the moving object, and zooming out is performed in the distance.

The surface pattern on the three-dimensional figure can also be expressed as a polygon, but this would increase the coordinates of the vertices, and would require a long time for the three-dimensional coordinate conversion calculation, which is not practical. Therefore, in general, a pattern pattern on the surface is separately prepared as a texture, and the texture is attached when a three-dimensional figure is displayed in the image display space.

In this way, the memory only holds the vertex coordinates of the polygons constituting the three-dimensional figure and the image data of the texture, and then expresses various three-dimensional figures by calculation when concretely displaying the image. Becomes possible.

A coordinate transformation is performed to represent the movement of the object.
As a result of the coordinate transformation, the object can be rotated, reduced, enlarged, inverted, translated, etc. by changing the coefficient of the matrix shown in the transformation formula. For example, as shown in FIG. 3, the object can be rotated by a predetermined angle around the x-axis, and the entire object can be rotated by performing the same transformation on the vertices of all the polygons. Next, FIG. 4 shows a specific example of perspective transformation using a matrix in which a three-dimensional solid figure is transformed into a two-dimensional plane by projection perspective transformation. To change the viewpoint, the coordinates of the projection center may be changed. Thus, the direction in which the target object is viewed can be changed. Of course, the coordinates of the entire target object may be converted without changing the coordinates of the viewpoint.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of construction of an inspection support system will be described. FIG. 5 shows a conceptual diagram of accessing the thickness measurement management data and the leak location management data and browsing the information via the maintenance support support system main menu.

The maintenance management data is linked to the three-dimensional CAD model, the maintenance management data is called from the main screen menu, and the search for the data matching the specific location is enabled. In this case, the portion where the thickness measurement management data is linked is the elbow portion, and the portion where the leak location management data is linked is the flange and the valve portion. In this way, the maintenance manager can access the menu-mediated parts without using unfamiliar commands,
The search operation can be easily performed. The work flow is shown below.

When the inspection technician conducts a diagnostic operation by detecting damage or the like in the piping or equipment as a result of the inspection, the inspection information browsing function can be used to easily access the three-dimensional model from the main menu of the maintenance support support system. Inspection technicians use CAD drawings and maintenance management data according to the flow of their own thoughts, browse target inspection point information and wall thickness trend graphs, etc. from drawings that they are accustomed to, and examine and evaluate damaged parts. It is possible to predict the remaining life and determine repair, remodeling and renewal.

As a result, the execution plan of the thickness measurement and various non-destructive inspections is calculated from the inspection cycle and the inspection execution record, and the selection of the inspection part to be executed in the designated period and the inspection contents can be accurately and easily performed. Can assist in planning.

For example, without using a three-dimensional model, a thickness instruction sheet, an inspection execution instruction sheet, and the like can be output as planning materials via a maintenance support system menu. It is also possible to output an instruction for each of a plurality of request destinations. Further, since various inspection plans can be centrally managed, the inspection work can be reliably performed.

[0032]

According to the system of the present invention, by using a three-dimensional model, it is possible to change the viewpoint of a cautionary point of a complicated plant, or to place a viewpoint inside the plant equipment to easily see a difficult-to-see place. Is now available.
Furthermore, by linking to maintenance data without instructing each command, even a non-skilled maintenance technician can easily operate the inspection point on the centralized management screen to determine the maintenance requirements. Can be performed, and there is an effect that drastically reduces errors in maintenance management.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of the system of the present invention.

FIG. 2 is a flowchart showing an operation example of the system of the present invention.

FIG. 3 is an explanatory diagram for converting a three-dimensional object into a two-dimensional plane by projection perspective transformation.

FIG. 4 is an explanatory diagram of perspective transformation.

FIG. 5 is a conceptual diagram of access to wall thickness measurement management data and leak location management data and information browsing in an embodiment of the system of the present invention.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuto Kobayashi 2-1-1, Tsurumichuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside Chiyoda Kako Construction Co., Ltd. (72) Inventor Jun Takasu, Tsurumi-chuo, Tsurumi-ku, Yokohama-shi, Kanagawa 2-12-1 Chiyoda Kako Construction Co., Ltd. (72) Inventor Koji Hoshino 2-12-1, Tsurumi Chuo, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture F-term in Chiyoda Kako Construction Co., Ltd. 5B075 ND30 NK37 PP03 PP13 PQ02 PQ32 5H223 AA01 BB01 EE06 FF03

Claims (1)

[Claims] In a plant maintenance support system using a computer, a plant to be managed is constituted by a three-dimensional model that allows the plant to be viewed from a free viewpoint, and the three-dimensional model of the three-dimensional model and a database for maintenance management are provided. A plant maintenance support computer system, comprising: means for setting a part for bridging on a menu and linking predetermined parts with predetermined maintenance management data.