JPS6039196B2 - Driving operation display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention detects the moment when a valve changes state in a complex system, clearly distinguishes between valves that have changed and valves that have not changed, and provides an operation display that facilitates operation monitoring. It is related to the device.

In recent years, in nuclear power generation facilities, from the perspective of enhancing safety, it is required to improve operational efficiency by strengthening operational monitoring of complex systems and early detection of troublesome equipment. One such example is the operation display of the waste treatment system of a nuclear power system. By the way, as a conventional device for early detection of troublesome equipment, there is an operation display device that displays the operating status of valves in a complicated system.

This simply displays the result of a valve change on a display. For example, a mechanical control point (hereinafter referred to as a limit switch) detects that the valve has operated and displays it on the display, and conversely, a limit switch indicates that the valve has returned. It is detected by a switch and displayed on the display. However, such operation display devices simply display the results of equipment operation, and cannot monitor changes in valve operation, making it impossible to monitor intermediate valve openings. . The present invention was developed in view of the above circumstances, and its purpose is to reliably detect whether a device has operated, such as instantaneously detecting changes in the operation of valves and other devices, and to detect devices that are subject to complex system operation. It is an object of the present invention to provide a driving operation display device that can easily monitor the system progress process by making it possible to instantly know the state of change in the system.

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

FIG. 1 shows a schematic configuration of a driving operation display device according to the present invention using a block circuit.

That is, as shown in FIG. 1, an operation command is given from the operation command circuit ST to the valve V and the state change detection circuit DET to operate them, and the change in the operation of the valve V at that time is detected by the state change detection circuit via the limit switch LS. DET is sensed, and the sensed signal is used to operate the flicker relay FR, causing the indicator L to flicker to indicate that the change has started. As a result, the operator senses that the corresponding valve V has changed, and after confirming the change, the operator can arbitrarily perform a return operation with a command from the return command circuit RS, so that the flicker display on the display L will be lit in a static state. There is. FIG. 2 shows in detail an example of an implementation circuit of such a driving operation display device, and a specific example of this circuit will be described below.

That is, in FIG. 2, 1 is a positive wire busbar, 2 is a negative power supply busbar, and a valve 12 having a selector switch 3 and an operation auxiliary relay 15 connected in parallel is connected in series between these busbars. A normally closed point 4 that moves with the selection switch 3 and a contact 9 that automatically closes when a condition is established are connected in series in parallel with the selection switch 3. The circuit up to now is one block, and similarly any number of circuits can be provided as many as the number of valves owned by the system. Here, only symbols are attached to the relevant items and their explanations are omitted. Also, one end of the automatic return type return switch 18 is connected to the positive bus bar 1, and the other end is connected to the limit switch 19 and the operation auxiliary relay contact 15.
-1 is connected in series to one end of the auxiliary relay 22, and the other end is connected to the negative bus bar 2. limit switch 19
-1 and a series circuit of the operation auxiliary relay contact 15-1, and a similar series circuit of the glue mitt switch 19-2 and the operation auxiliary relay 15-2, and the contact 22 of the auxiliary relay 22.
-1 respectively. The circuit excluding the conventional automatic return type return switch is one block, and similarly any number of circuits are provided as many as the number of valves owned by the system, all of which are connected to the return switch 18. Here, only symbols are attached to the relevant items and their explanations are omitted. On the other hand, 30 is a first-phase AC single-phase power supply bus, 31 is an AC single-phase second-phase power supply bus, and an arbitrary number of auxiliary relays 22, 23, 24, . . . n are provided between these two buses. The parallel circuit of contacts 22-2, 23-2, 24-2, . . . n-2 and the flicker relay 25 are connected in series.

In addition, a limit switch 19- is connected to the first phase power bus 30.
Connect one end of 3 and connect the other end to flicker relay contact 25
-1 and the auxiliary relay normally closed contacts 22-3 are connected to one end of the green lamp G of the display 26 through a parallel circuit, and the other end is connected to the second phase power supply bus 31. Similarly, one end of the limit switch 19-4 is connected to the first phase power supply bus line 3,
The other end is connected to one end of the red lamp of the display 26 through a parallel circuit of the flip relay contact 25-2 and the auxiliary relay normally closed contact 22-4, and the other end is connected to the second phase power bus 31.
Connect to. The circuit so far has been one block, and similarly any number of circuits can be provided as many as the number of valves owned by the system. Here, only symbols are attached to the relevant items and their explanations are omitted. Next, the operation of the driving display device configured as described above will be described.

First, the state in which one valve operates will be described. A display corresponding to the valve 12 is provided on the display 26, and the selection switch 3 is used when the valve is manually operated as desired, and the selection switch 4 is used when the valve is automatically operated. When the selection switch 3 is closed or closed by manual selection, the valve 12 is energized, and at the same time, the valve 12 operates in the opening direction and the operation auxiliary relay 15 is also energized. When the selection switch 3 is bribed, the manual operation is canceled, the solenoid of the valve 12 becomes de-energized, the valve 12 works in the closing direction, and at the same time the operation auxiliary relay 15 becomes de-energized. When the other selection switch 4 is automatically selected and closed and the automatic condition contact 9 is opened, the valve 12 and the operation auxiliary relay 15 are energized in the same manner as described above, and when the automatic condition contact 9 is opened to cancel the establishment,
The valve 12 and the operation auxiliary relay 15 are not energized. Furthermore, it is linked to the valve 12 and the mitt switches 19-1 and 19-
As shown in FIG. 3, 3 is a contact that closes when the valve 12 is at a fully open position or less, and limit switches 19-2 and 19-4 are contacts that close when the valve 12 is at a fully open position or more. now,
If the valve 12 is energized by manual selection or automatic selection,
The auxiliary relay 22 is energized from the return switch 18 via the limit switch 19-1 and the normally open contact 15 of the operation auxiliary relay 15, and the contact 22-1 is self-holding, and the contact 22-2 activates the flicker relay 25. Excite.

Here, when the valve 12 is fully closed, the indicator 26 indicates the limit switch 19-3 and the normally closed contact 2 of the auxiliary relay 22.
2-3, the green lamp is lit statically, while the red lamp on the same display is off. Therefore, in such a state, the above-mentioned flicker relay 25 operates, so that the contact point 25-1 operates as a flicker relay, and the contact point 22 of the auxiliary relay 22 connected in parallel to this contact point 25-1 operates. Since -3 becomes an open circuit, the line lamp starts blinking. This flashing display causes valve 1 to
It can be immediately sensed that valve 2 has changed duty, and then the valve 12
As the limit switch 19-4 moves from the closed state to the open direction, the limit switch 19-4 also becomes closed, and the red lamp also changes from being off to flickering. In this state, both lamps flicker. It can be determined that the valve 12 is at the intermediate opening position. Furthermore, when the valve 12 is in the fully open position, the limit switch 19-3 becomes a junction,
The green lamp goes out and only the red lamp continues to flicker, and at this point it can be determined that the valve 12 is fully open. Since this flicker state continues until the return switch 18 is operated, the flicker display is displayed until the operator confirms it, so that monitoring will not be missed. After that, when the system returns to normal, the contact 22-4 of the auxiliary relay 22 is closed, and the red lamp changes to a stationary state. The above is valve 1
Having described the case where 2 changes from closed to open, next we will discuss the case where it changes from closed to closed. When the selection switch 3 is opened or the automatic condition contact 9 is released, the valve 12 becomes de-energized, and the auxiliary relay 22 is energized through the limit switch 19-2 and the normally open contact 15-2 of the operation auxiliary relay 15. The flicker relay 25 operates by closing the normally open contact 22-2 of the auxiliary relay 22. Due to the operation of this flicker relay 25, its contact 25-2 flickers through the limit switch 19-4, so the red lamp starts blinking, and when the valve 12 is fully closed, the red lamp goes out and only the green lamp turns on. The green lamp will continue to blink, and by opening the return switch 18 after confirmation, the green lamp will change to a stationary lighting state. In this way, the green lamp and the red lamp display three types of indications depending on the valve opening: static lighting, flashing, and static extinguishing, and the display range is shown in FIG. 4.

Figure 4 shows green lamp display range A and red lamp display range B when the vertical axis is the fully open position of the valve and the machine axis is the fully closed position of the valve.
, and the shaded area C where both ranges overlap is the intermediate opening degree. Further, the display state of the self-display method from the valve close to the valve fully open is shown in FIG. 5 as a time chart. In other words, this time chart shows that when the valve starts operating from a fully closed state, the green lamp that was lit at rest begins to flicker, allowing you to sense that the valve has operated, then turns off, and then turns red. The lamps also start flickering, and it can be determined that the valve is in the intermediate opening position by flickering both lamps, and when it approaches full open, the green lamp that was flickering will automatically turn off and switch to red. This indicates that only the lamp continues to flicker. The above operation display is an explanation for one circuit of normal operation, but even if there are multiple valves, each display can be monitored reliably.

In addition, even if you operate the reset switch arbitrarily, the flicker display on the display will not stop while the valve is changing from closed to closed or vice versa, so you can operate the reset switch at will without missing any monitoring. However, there is no problem with monitoring. On the other hand, considering the case where the valve operates momentarily due to a deliberate operation or an erroneous signal, if the selection switch 3 is closed by mistake during the manual position, the operation auxiliary relay operates instantly, so the auxiliary relay 22 is self-holding. By doing so, the operator can immediately check the status on the Fritzker display. Furthermore, even if a valve momentarily operates due to some kind of erroneous signal during automatic operation, a flicker display is displayed in the same way, so it can be immediately determined which valve has malfunctioned. Therefore, by combining it with an alarm, abnormal conditions can be quickly communicated to operators, which is useful for early troubleshooting. In the above embodiment, the case of valves, especially electric valves, was described, but it can also be applied to the control status monitoring of power system disconnectors and electrically operated disconnectors, and the central control room can collectively monitor a large number of devices. It is possible. In addition,
The invention is not limited to the embodiments described above and shown in the drawings. Various modifications can be made without changing the gist of the invention. As described above, according to the present invention, in the system operation control of a plurality of valves or electric motors (hereinafter referred to as equipment), the operating change state of the equipment during normal mode operation is displayed by flicker on the display. Devices that are not in operation are lit statically, so the system progress can be clearly understood and the operating status of the devices can be easily monitored.

In addition, by combining it with an alarm to reliably detect the operation of equipment due to erroneous operation, erroneous signals, and the operation of these devices at a single point in time, and to provide a flicker display, malfunctioning equipment can be immediately discovered and operators can Eliminating the need for constant monitoring can contribute to reducing burdens and early detection of defects.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an outline of the driving operation display device according to the present invention, Fig. 2 is a circuit diagram showing an embodiment of the present invention, and Fig. 3 shows the operation according to the valve opening degree of the IJ mitt switch shown in Fig. 2. FIG. 4 is a developed diagram showing the lamp display range according to the valve opening degree, and FIG. 5 is an evening chart showing the display state of the display device in the same embodiment. 3-8...Selection switch, 9-11...
・Automatic condition contact, 12-14...Valve, 15-1
7... Operation auxiliary relay, 18... Return switch, 19-21... Limit switch,
22-23...Auxiliary relay, 25...Flicker relay, 26-28...Display device. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1 Operating devices for valves and other equipment, a detector that detects the opening position of the equipment, and a stationary sensor with a different color such as red or green that detects whether the equipment is in the fully open or fully closed position. When the detector detects that the device is operated from the fully open or fully closed position, the indicator displays both the illuminated state and a different color on the display simultaneously until the device reaches the fully closed or fully open limit. A flashing device that blinks, and when the operation of the device goes from fully closed to fully open, among the flashing displays on the indicator caused by the flashing device, when the fully open limit is reached, the flashing display on the side that becomes stationary at the fully closed position is turned off. A driving operation display device consisting of a device that causes a blinking display on the side that lights up stationary in the fully open position to return to the static lighting state upon confirmation and return.