JPS6017395A - Alarm device for nuclear power plant - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an alarm device for a nuclear power plant, and in particular to a good news display that collectively displays abnormal conditions in a nuclear power plant on a cathode ray tube (CRT) or the like. This invention relates to an alarm system for a nuclear power plant that incorporates the system into a central control panel.

[Technical background of the invention and its problems]

Generally, nuclear power plants are equipped with a central control panel in the central control room, and normal startup, shutdown, and reactor output control in a nuclear power plant are all remotely controlled by this central control panel, and each part of the nuclear power plant is controlled remotely. It is designed to monitor driving conditions. As shown in Figure 1, the central control panel 1 has a table-like appearance, and various data during operation of the nuclear power plant is converted into electrical signals and transmitted.The front panel displays various types of data. A large number of alarm display panels 2 and cathode ray tubes 3 (hereinafter referred to as CRTs) are installed to display alarm contents, so that the operating status of each part of the power plant can be monitored at a glance. The above-mentioned alarm display panel 2 is a small box-shaped casing containing a lamp, whose front opening is closed by pasting a transparent plate with various alarm items engraved on it, and as shown in Figure 1, the front opening of the small box-shaped casing is closed. A large number of them are arranged. When an abnormal state of the power generation plant is detected, a lamp corresponding to the detected content is turned on to display the content of the alarm, and at the same time, a buzzer (not shown) is sounded to issue an alarm. This alarm display panel 2 displays a large number of alarm contents, about 100 points, so when an abnormal condition occurs, the supervisor can immediately and accurately determine whether the alarm display panel 2 is lit or not, and the alarm state There was a fear that it would be difficult to accurately grasp the aspects of In addition, in general, when one abnormal condition occurs, other abnormal conditions often occur in a chain reaction, resulting in frequent alarms, making it difficult to accurately and quickly determine the operating status of each part of the power plant. There was a fear that the situation would be further exacerbated. Furthermore, the alarm display panel 2 and CRT 3 both turn on and off for each reporting item and display alarms digitally, making it difficult to grasp continuous alarms for the entire power plant9. There is a need for an alarm display device that can more intuitively grasp the continuity and mode of conditions and accurately and quickly judge the operating status of each part of a power plant. Research on warning analysis and warning prediction has already been carried out, but there is also a strong demand for skilled supervisors to grasp all information about power plants without limiting the range or type of reports.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and it is possible to more intuitively understand the continuity and progress of alarm conditions in a nuclear power plant, and accurately and quickly determine the mode of alarm conditions in each part of the power plant. The purpose of the present invention is to provide an alarm system for nuclear power plants that can be used to judge the situation.

[Summary of the invention]

In order to achieve the above-mentioned object, the alarm device for a nuclear power plant according to the present invention is configured as follows.

The central control panel, which monitors the operating status of a nuclear power plant and alerts you to the nature of the abnormality when an abnormality occurs, quantitatively collects the magnitudes of multiple types of detection values from various detectors that detect abnormal conditions in the nuclear power plant. It is constructed by providing an alarm display device that displays and issues an alarm.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a warning device for a nuclear power plant according to the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of an embodiment of the alarm system for a nuclear power plant according to the present invention, and reference numeral 10 in the figure indicates a nuclear power plant.

The nuclear power plant 10 is equipped with a large number of various hoisting devices (not shown) that detect process variables such as temperature, coolant flow rate, liquid level, and pressure in order to monitor the operating status of each part of the power plant 10. There is. The various detection values detected by these many various detectors (not shown) are input to the signal transmitter 12, where they are converted into electrical signals etc. and sent to the central control room.
It is transmitted to the central control panel 14 of No. 3. On the other hand, central control panel 1
4, a control signal 15 for remotely controlling the operation of each part of the nuclear power plant 10 is output from the central control panel 14 and transmitted to the nuclear power plant 10 and the plant simulator 16 via the signal transmitter 12. It has become. The plant simulator 16 simulates various abnormal states of the nuclear power plant 10 and transmits various simulated alarm signals 17 corresponding to the abnormal states to the central control panel 13 via the signal transmitter 12. That is, on the screen of the CRT 18 of the alarm display device, which will be described later, provided in the central control panel 13,
A simulated abnormal state of the power generation plant 10 is displayed. Therefore, various alarm conditions, including special alarm conditions that occur extremely rarely, can be appropriately displayed on the screen of the CRT 18, and the supervisor who monitors the central control panel 14 can It is possible to learn the alarm display patterns of various alarm states in advance.

For this reason, it is possible to train the lifeguards so that they can respond calmly and accurately when a warning is actually displayed.

The central control panel 13 includes an alarm display panel 19 and a CRT 18.
The alarm display panel 19 is constructed by arranging a large number of semi-transparent plates engraved with various alarm items attached to the front opening of a small box-shaped casing containing a lamp to close the opening. . On the other hand, as shown in FIG. 3, the CRT 18 forms a large number of rectangular display blocks 18b on the CRT screen 18a by appropriately partitioning a large quadrilateral frame vertically and horizontally. These display blocks 18b correspond to each alarm item on the alarm display panel 19, and when the lamp on the alarm display panel 19 is turned on, the corresponding display block 18b is also displayed. This display block 18b is, for example, displayed in black in a normal state and red in an abnormal state.

When an abnormal state occurs in the nuclear power plant 10, the detection signal 11 output from various detectors (not shown) installed in the power plant 10 is transmitted to the signal transmitter 12, which controls the central control room 13. It is transmitted to the board 14. Here, the detection signal 11 is compared with the alarm setting value, and if the alarm setting value is exceeded, the display block 18b drawn on the screen 18a of the CRT 18 is changed from black, which indicates a normal state, to red, which indicates an abnormal state. Display it. Further, if the abnormal state occurring in the nuclear power plant 10 progresses in a desired direction, the number of red displays in the display block 18b of the CRT 18 is increased in accordance with the state of progress, and a warning is displayed.

That is, it is possible to visually determine whether the abnormal state of the power generation plant 10 is progressing or decreasing based on the increase or decrease in the number of red displays on the display block 18b. Furthermore, it is impossible for the supervisor of the central control panel 14 to experience in advance abnormal conditions that are considered to occur extremely rarely in the nuclear power plant 10. Therefore, a simulated alarm signal 17 that simulates the extremely rare abnormal state described above is transmitted from the plant simulator 16 to the CRT of the central control panel 14 via the signal transmitter]2.
18.

The CRT 18 displays the display block 1 on the CRT screen 18a.
．． 8b, the red display pattern of the display block 18b is unique depending on the state of the abnormal state, and the observer can recognize the red display pattern of the display block 18b and identify the state of the abnormal state. It can be learned in advance.

In the above embodiment, a CRT was used as the alarm display device, but the present invention is not limited to this. For example, a light emitting diode display, a liquid crystal display, a plasma display, etc. can be used to An alarm may be displayed for abnormal conditions all at once.

〔Effect of the invention〕

As described above, the present invention provides an alarm display device that quantitatively displays the magnitude of multiple types of detection values from various detectors for detecting abnormal conditions in a nuclear power plant at once and issues an alarm on a central control panel. Since the alarm is provided at the same time, alarms can be displayed all at once in a display pattern that corresponds to the abnormal state of the nuclear power plant. Therefore, it is possible to intuitively understand the abnormal state of the nuclear power plant very easily from the alarm display pattern, and it is possible to quickly and accurately judge and respond to abnormal state alarms.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a conventional central control panel, Fig. 2 is a block diagram showing an embodiment of an alarm system for a nuclear power plant according to the present invention, and Fig. 3 is a screen diagram showing a large number of display blocks. FIG. 3 is a front view of the CRT depicted above. ■...Central control panel, 2,19...Alarm display panel, 3.
-・CRT, 10...Nuclear power plant, 11...
・Detection signal, 12... Signal transmitter, 13...- Central control room, 14... Central control panel, 15... Control signal, 1
6... Plant simulation device, 17... Simulated alarm signal,
18...CRT, 18a...CRT screen, 18b.
...Display block. Applicant's agent Hisatoshi Hatano l Figure

Claims (1)

[Scope of Claims] 1. A central control panel that monitors the operational status of the nuclear power plant and issues an alarm regarding the details of the abnormality when an abnormality occurs, is equipped with a central control panel that monitors the operating status of the nuclear power plant and issues an alarm regarding the nature of the abnormality when an abnormality occurs. 1. An alarm device for a nuclear power plant, comprising an alarm display device that quantitatively displays the magnitude of a plurality of detected values at once and issues an appropriate alarm. 2. Claim 1, characterized in that the central control panel is connected to various detectors in the nuclear power generation ground via a signal transmitter that performs appropriate signal processing on detected values and enables transmission. A warning device for a nuclear power plant described in . 3. The alarm display device has a cathode ray tube, and display pieces of a desired shape drawn on the screen of the cathode ray tube are displayed quantitatively at once according to the magnitude of the detection value from the detector. An alarm device for a power plant according to claim 1, characterized in that: 4. The alarm device for a nuclear power plant as set forth in claim 1, wherein the alarm display device includes at least one of a light emitting diode display, a liquid crystal display, and a plasma display. 5. The central control panel inputs the control signals output from the central control panel and electrically transmits them via a signal transmitter to a plant simulator that outputs a simulated alarm signal that simulates abnormal conditions in the nuclear power plant. The alarm device for a nuclear power plant according to claim 2, wherein the alarm device is connected to a nuclear power plant. 6. The alarm display device has a plurality of circular or rectangular display pieces arranged on the screen of the cathode ray tube to display a linear or bar-shaped display, and these display pieces are displayed quantitatively according to the magnitude of the detected value from the detector. 5. The nuclear power plant information system according to claim 4, wherein the display pieces are displayed at once, or the display pieces are color-coded according to appropriate stages of the detected values.