JP2006244072A - Plant state simulation method and system - Google Patents

Abstract

[PROBLEMS] To easily simulate the state change in the system by operating and opening / closing the device, and to display the state change so that the state change can be identified. It is an object of the present invention to provide an in-plant state simulation method and system capable of visually examining the operation state and the like.
A plant information management server and a display terminal (20a to 20c) are basically configured. The plant information management server 10 stores in advance the intelligent P & ID 15 and the intelligent 3D model 16 based on the information of the P & ID conversion DB 13 and the 3D model conversion DB from the 2D P & ID file 11 and the 3D CAD model file 12, respectively. Keep it.
[Selection] Figure 1

Description

  In the operation and maintenance of the plant, the present invention simply simulates changes in the state (pressure / fluid) in the plant by operating / stopping the equipment and opening / closing the valve, and the intelligent P & ID and connection information are obtained. The present invention relates to an in-plant state simulation method and system that can be visualized on a display by a three-dimensional model.

  In the conventional maintenance of plant facilities, information on the facilities and equipment that are subject to maintenance varies from construction drawings, piping instrumentation diagram (PIPING & INSTRUMENTATION DIAGRAM, hereinafter referred to as P & ID), equipment ledger, and maintenance records. Therefore, in order to identify the equipment that needs to be maintained and to collect information on the equipment, even workers familiar with the facilities and equipment required a great deal of labor. In addition, when operating devices and valves during operation and maintenance work, it has been difficult to visually and beforehand confirm changes in the state of the system due to the operations.

As a conventional plant facility maintenance technique, for example, there is a system drawing display method and a drawing management apparatus disclosed in JP-A-6-274135 (Patent Document 1). This is because the facility system diagram is stored as graphic data so that the connection of the system can be understood, and the affected system can be identified from other systems by judging the affected system by operating the open / close element of the system. Is displayed on the display device.
Further, there is a technique called a plant maintenance support system disclosed in Japanese Patent Laid-Open No. 2001-356813 (Patent Document 2). This consists of a three-dimensional model that allows the plant to be managed to be viewed from a free viewpoint, and a function for bridging this three-dimensional model and the maintenance management database is set on the menu, and each part has a predetermined function. This is a system provided with means for linking maintenance management data. This three-dimensional model has an effect that it is possible to easily see a difficult-to-see place by looking at a point requiring attention in a complicated plant from a different viewpoint or by placing a viewpoint inside the plant apparatus.

  Further, there is a technology called a plant facility maintenance system disclosed in Japanese Patent Application Laid-Open No. 2002-341930 (Patent Document 3). This improves the work efficiency of the maintenance work by systematically managing the facility / equipment information necessary for the maintenance of the plant equipment and the operation information thereof.

Furthermore, there is a technique called an intelligent method of piping instrumentation system diagram disclosed in Japanese Patent Laid-Open No. 2002-342384 (Patent Document 4). This is a piping instrumentation system diagram that makes it possible to make intelligent diagrams (non-attribute CAD drawings) drawn by existing non-attribute CAD (CAD that draws lines and symbols by simple figures) that do not consider any attributes. It is an intelligent method.
JP-A-6-274135 JP 2001-356913 A JP 2002-341930 A JP 2002-342384 A

  However, the technique disclosed in Patent Document 1 has a problem that “only the identification display of the range affected by the opening and closing in the system diagram is displayed, and the change in the state due to the operation is not displayed”.

  Further, the technique disclosed in Patent Document 2 states that “although the three-dimensional model is used to link with maintenance data, the valve cannot be opened and closed on the model. Similarly, there is a problem that the state change due to the operation is not displayed.

  In addition, the technology disclosed in Patent Document 3 states that “the operation state of the device is variable and the color of the device itself is changed on the display screen, but the connection relationship associated with the change of the device operation (including opening / closing) state”. The state change in the system cannot be predicted, and the result cannot be displayed.

  Furthermore, the technique disclosed in Patent Document 4 is “a technique that enables an attribute-free CAD to be an intelligent piping instrumentation system diagram that holds connection information”. It was necessary to devise.

  The present invention has been made in view of the above problems, and by simulating the state change in the system by operating and opening and closing the device, by displaying so that the state change can be identified, It is an object of the present invention to provide an in-plant state simulation method and system capable of visually grasping a state in a system (fluid type, pressure state, etc.) and examining an operation procedure.

  The invention according to claim 1 of the present invention defines a unique ID and connection ID of piping / equipment and then prepares an intelligent P & ID and an intelligent 3D model, and a pressure-dependent device and component. The process of defining pressure-dependent devices / parts that define the flow, the step of setting flow-direction-dependent components that set the flow direction-dependent devices and pressure changes of parts, and the operation of setting the pressure changes of components that are in operation The pressure change setting process, the initial state of the system and the current operating state of the equipment and valves, the initial state setting process in the system, and the valve and fluid pressure simulation by operating the valves and equipment It has a propagation simulation process by the operation of equipment and a result display process to display the simulation result, making it easy to change the state in the plant The in-plant state simulation method is characterized in that the simulation is performed and the result is displayed.

  The invention according to claim 2 of the present invention includes a plant information management server having an intelligent P & ID and an intelligent 3D model, and a display terminal, and uses the plant state simulation method according to claim 1 to A plant internal state simulation system characterized by simply simulating changes in internal state and displaying the results.

  The present invention makes it possible to easily and visually identify the pressure state and fluid type at a corresponding location in the plant with a simple pressure setting. In addition, the result of the state change in the pipe is immediately recognized by the valve operation on the display, and the operation procedure can be examined and the procedure manual can be created while simulating on the screen. Furthermore, identification display of the high-pressure line and classification display of the type of fluid in the pipe are possible, so that it becomes very easy to assist the operation of the valve and examine the response in an emergency.

  Prior to the detailed description of the present invention, the terminology will be explained. First, attributeless CAD refers to CAD in which lines and symbols are drawn with simple lines and figures. In addition, intelligentization converts lines and figures drawn in attributeless CAD to those that have attributes (piping, equipment, piping parts, instrumentation parts, etc.) that each means, and that have connect information. That is. The graphic attributes refer to layers (layers), colors, line types, line widths, shapes, cell names, and the like possessed by two-dimensional and three-dimensional (hereinafter also abbreviated as 2D and 3D) CAD graphics. Further, the component attribute means information such as a unique device number, line number, component number, instrument number, size, and specification held by a component (device, piping, instrument, etc.). Further, the in-pipe attribute means a fluid attribute in the pipe, and represents pressure and fluid type (including distinction between gas and liquid). Although not dealt with in the following description, there is another temperature attribute as an in-pipe attribute.

  FIG. 1 is a configuration diagram of a system according to the best mode for carrying out the present invention. This system is configured based on a plant information management server 10 and display terminals 20 (20a to 20c). The plant information management server 10 stores in advance the intelligent P & ID 15 and the intelligent 3D model 16 based on the information of the P & ID conversion DB 13 and the 3D model conversion DB from the 2D P & ID file 11 and the 3D CAD model file 12, respectively. Keep it. In this system, both the two-dimensional P & ID and the three-dimensional model are handled, but either one is sufficient as the system and should be appropriately selected depending on the scale and type of the plant.

  The P & ID conversion DB 13 has P & ID drawing information, component attributes, and connection information, and each may be a separate and independent DB (in this case, the P & ID conversion DB 13 is a generic meaning of a DB group) It may be composed of one DB. Furthermore, the DB itself may be built in the plant information management server 10 or may be built in a server separate from the plant information management server 10. Similarly, the 3D model conversion DB 14 also has graphic information, component attributes, and connection information.

  Further, the plant information management server 10 is connected or built in with a plant management information DB 17, a maintenance information DB 18, and a book data DB 19. In addition, it is also connected to a supervisory control facility (DCS or the like) 21 to capture operation information (measured values such as device / valve open / closed state and line pressure value), and the results of arithmetic processing and simulation are displayed on display terminals 20a to 20c. Is displayed.

  Next, a detailed processing flow will be described with reference to FIG.

(1) Definition of unique ID and connection ID of piping / equipment for intelligentization (S100)
Each pipe (line), component / equipment has a unique ID (system ID) associated with 2D or 3D graphic information, and a connection ID is always defined at the connection end. FIG. 3 is a diagram illustrating definitions and setting examples of unique IDs and connection IDs in piping / equipment. FIGS. 3A and 3B show valves and pipes, respectively. As in this example, it usually has one unique ID and two connection IDs, but there are also cases of three or more connection IDs such as a three-way valve or a device.

  FIG. 3C is an example of a series connection of a valve and a pipe. Valve ==> unique ID (ID: 3000), connection 1 (ID: 2001200), connection 2 (ID: 2001201), pipe ==> The unique ID (ID: 3001), connection 1 (ID: 2001201), and connection 2 (ID: 2001202) are defined.

(2) Preparation of intelligent P & ID (S101)
In P & ID, drawn piping lines, instrumentation lines, equipment, piping parts, and instrumentation parts use P & ID that has been made intelligent in advance, and can be displayed and operated on the WEB. This intelligent P & ID holds connection information of each component (device, valve, etc.) and line (piping), and the mutual connection relationship is stored in the connection information DB.

(3) Preparation of intelligent 3D model (S102)
In the 3D model, without using the plant 3D CAD for creating the model, a viewing system capable of displaying the shape data and component attributes is used for display / operation, and the connection information DB (taken out from the 3D CAD) is used. Create) and display the propagation results of pressure and fluid from the mutual connection. The above is the preparatory process for preparing in advance, and then the process for setting the fluid type and the pressure attribute is entered.

(4) Definition of pressure-dependent devices and parts (S200)
Pre-define equipment / parts that contribute to pressure setting into five types: (a) booster equipment (b) step-down equipment (c) pressure-holding equipment (d) open equipment (e) general parts. Table 1 shows the definition of the pressure-dependent device / part and the setting of the change (this will be described later).

(5) Pressure change setting for flow direction dependent devices and parts (S300)
Some devices and valves have a fixed flow direction, and as shown in Table 2, their inlet / outlet and single-flow components are set.

(6) Pressure change setting for parts in operation (S400)
Equipment and valves can be set to operating states such as operation / stop, open / close, etc. At this time, as shown on the right side of Table 1, the pressure state change when the operation state is set in advance. .

(7) Initial state setting in the system (S500)
Set the initial state in the system. First, when there is no operating device in the corresponding system and the fluid is in a stationary state, the initial state setting is completed by sequentially setting the open / close state of the valve, the pressure, and the retained fluid at the start of the work. This setting method will be described in detail below with reference to FIG.

  In addition, when the system state at the time of work is in the operating state and there is a flow, it is necessary to construct the system state, and the result of sequential execution of propagation simulation in the operation of the equipment and valve opening / closing operation described later Is handled as an initial state (current operation state) (S601).

(A) Initial setting of apparatus state in system In order to set an initial in-pipe state, first, all of the pressure-dependent apparatuses (equipment 1 to 3 in Table 1) are stopped. This is to set the in-pipe state when stationary (no flow) to the initial state. This operation can also be performed at the display terminal (or operation terminal), but as a default value, all the pressure dependent devices can be collectively designated as an initial state in a stopped state.
(B) Initial setting of valve open / close state Next, the valve open / close state is set. These operations are performed at the display terminal (or operation terminal), the displayed valves are selected, and opening / closing operations are sequentially instructed. These results in (8) and (9) can be identified by the display color of the corresponding device / valve. At this point, all fluid types and pressures in the system remain at initial values (or default values).
(C) Setting of fluid type and static pressure in the system Next, as the initial system state, the fluid type and pressure state of the pipe and the pressure holding device are set. For this, a pressure holding device or a line (pipe) is selected, and a fluid type and a pressure value are input. At this time, a section closed by a valve or the like can be selected and set at a time. For this reason, the valve in the line in the above (b), which has been opened in advance, requires less setting operation if it is opened. FIG. 3D shows an example of the set static pressure state and fluid type.
<Pressure state setting>
The pressure state set in the closed section is given a pressure value for each connection ID of each part.

Valve ==> Connection 1 (ID: 2001200): Pressure = Undefined
Connection 2 (ID: 2001201): Pressure = 0.1
Piping ==> Connection 1 (ID: 2001201): Pressure = 0.1
Connection 2 (ID: 2001202): Pressure = 0.1
Connection 3 (ID: 2001203): Pressure = 0.1
Connection 4 (ID: 2001204): Pressure = 0.1
<Setting of fluid type>
A fluid type symbol is assigned to the ID of each line (tube).

Piping (ID: 3001, 3002, 3003): Fluid = W (water)
(D) An unset point is checked, and the setting of the fluid type and static pressure state in the system is completed. At an unset point, pressure = 0, fluid = undefined (or default fluid at the time of design) are set. When the setting of the static state is completed, the propagation simulation mode by the operation of the device and the opening / closing operation of the valve from the next operation terminal is described.

(8) Propagation simulation by operating valves and equipment (S600 in Fig. 2)
FIG. 5 is a diagram for explaining the flow of fluid / pressure propagation simulation by operating valves and equipment. When the device or valve to be operated is first selected, and then the stop mode → operation mode, valve opening / closing operation is performed, the fluid in the pipe moves from the higher pressure to the lower pressure. In the propagation simulation mode, this phenomenon is simply processed as a propagation step, and the fluid and pressure change results in the system are immediately and visually displayed.

  The details of the propagation step in the system when operating the device / valve are shown in FIG. For example, when the terminal is instructed to open the V-1 valve, the pressure values at the connection points (connection ID) at both ends of the valve are compared, the flow direction is set from the higher to the lower, and the fluid propagation (prop Gate). At the same time, pressure propagation considering pressure loss is performed. At this time, the pressure loss that occurs when passing through parts, pipes, fittings, etc. is not strictly calculated, and a process is performed in which ΔP (a minute value that can be processed by the system) is uniquely determined as a minute pressure loss. . As a result, the flow direction is determined without fine input such as the pipe diameter and fluid physical properties, and a macro pressure value higher than the actual one can be easily extracted and displayed. This propagation step is performed sequentially, including branching, to the end point of the flow (end point of the system such as a closing valve or equipment). As a result, alarms in the case of abnormal system pressure (comparison with the design pressure, etc.) and operation results are displayed on the display terminal (on the intelligent P & ID or intelligent 3D model) in different colors according to the fluid type and pressure classification. (S700) enables easy confirmation.

  Moreover, the measured value of a pressure gauge etc. can also be taken in from monitoring control equipment (DCS etc.) as a fixed point measured value. This makes it possible to perform correction with higher accuracy. Fluid settings can be set by preparing not only the planned fluid during normal operation but also the fluid type data during actual work so that it can handle air (O2) purge and N2 purge during startup and maintenance work. I have to.

It is a block diagram of the system which concerns on the best form for implementing this invention. It is a figure which shows an example of the detailed processing flow of this invention. It is a figure explaining the definition and setting example of unique ID and connection ID in piping and apparatus. It is a figure explaining the flow of initial state setting in a system. It is a figure explaining the flow of propagation simulation of fluid and pressure by operation of a valve and apparatus. It is a figure which shows the detail of the propagation step in the system at the time of apparatus and valve | bulb operation.

Explanation of symbols

10 Plant information management server 11 2D P & ID
12 3D CAD model 13 P & ID conversion DB
14 3D model conversion DB
15 Intelligent P & ID
16 Intelligent 3D model 17 Plant management information DB
18 Maintenance information DB
19 Book data DB
20a-c Display terminal 21 Monitoring and control equipment (DCS, etc.)

Claims (2)

After defining the unique ID and connection ID of the piping / equipment, the preparation process of preparing the intelligent P & ID and intelligent 3D model,
The process of defining pressure-dependent devices and parts for defining pressure-dependent devices and parts,
A flow direction dependent component setting process for setting the pressure change of the flow direction dependent device and the component;
A process for setting a pressure change during operation for setting a pressure change for a component in an operating state; and
The initial state setting process in the system for setting the initial state of devices and valves or the current operating state,
Propagation simulation process by operation of valves and equipment that simulates propagation of fluid and pressure by operation of valves and equipment,
A plant state simulation method comprising: a result display step of displaying a simulation result, wherein a change in the plant state is simply simulated and the result is displayed. A plant information management server having an intelligent P & ID and an intelligent 3D model;
A display terminal,
An in-plant state simulation system characterized in that, by using the in-plant state simulation method according to claim 1, a change in the in-plant state is simply simulated and a result is displayed.