JPS6081601A - Testing device - Google Patents

Abstract

PURPOSE:To make various kinds of a set values maltiform and highly accurate by patterning a control signal to be outputted, generating the patterned signal as an open loop control signal and switching a non-testing state to a testing state for open loop control by van pressing. CONSTITUTION:A CPU12 is provided with a condition setting signal output circuit 15 to execute open loop control for the starting control of variously generated events and extracts a driving signal to a flow rate adjusting valve 2 from a pattern output data table 14 as a patterned signal to attain the open loop control. The formed pattern data are stored in a magnetic disc 23, converted into an electrical signal by a process I/O device 19 as a high speed cycle signal of the circuit 15 and the electrical signal is sent to a testing equipment 1 through a signal switch 9. Receiving a control signal for the non-testing state, from a programmable controller, a van press switching auxiliary circuit 17 outputs the pattern data to the van press.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a testing device a equipped with means for arbitrarily controlling various events in experimental equipment and a function of evaluating its behavior.

[Technical background of the invention and its problems]

An example of experimental equipment that generates various events without a trench is a nuclear reactor core simulation system, and the test equipment will be described below.

In the reactor core, uranium combustion companions and control rods that control uranium fission (nuclear fission increases when removed from the fuel rod and decreases when inserted) are arranged in an orderly manner, and cooling water (pure water) circulates between them. The uranium undergoes nuclear fission and receives the heat generated, producing high-temperature, high-pressure steam. The steam rotates a steam turbine, thereby obtaining a square that rotates a generator Yir jQ that is directly connected to the steam turbine.

When placing importance on the safety of nuclear reactors, it is necessary to confirm the current safety standards of nuclear reactors using experimental equipment, assuming accidents that would never occur in reality.

For example, a hypothetical accident could be that a pump that circulates cooling water to a nuclear reactor core stops due to loss of pressure. In this case, the rapid reduction in the circulating flow rate to the reactor core reduces the heat transfer from the fuel rods to the coolant in the reactor I, and the liquefaction rate of the flow rate is much lower than that of the heat output liquefaction. Because it is large, the reactor core is placed in harsh thermal conditions.

FIG. 1 shows the configuration of the test equipment for conducting the above experiments, in which 1 is the experimental equipment, flow rate regulating valves 2. Flow rate sensor 31 consists of a steam generation heater, a simulated fuel section, a steam circulation pump, and a steam cooling device (not shown in the figure). A control panel 4 serves as a component for controlling the experimental equipment, and includes a programmer sol controller 5, and adjusts the experimental equipment 1 by switching the glomerar controller 5 to manual mode or automatic mode. Perform manual operation or feedback control of the valve. In addition, the programmable controller is connected to each regulating valve to be operated. Reference numeral 6 denotes a control signal output from the programmable controller 5, which serves as a drive signal for the flow rate regulating valve 2. 7 is an analog input amount from the flow rate sensor 3, which is a feedback signal indicating the flow rate of steam (otherwise there are steam temperature and pressure). The feedback signal 7 is inputted not only to the programmable controller 5 but also to a data recorder 8-- and is recorded for data analysis.

Experiment method-C using this testing device is to record thermal behavior on the data recorder 8 using the control panel 4 in order to cause various events to occur in the experimental equipment 1.

The programmable controller 5 performs feedback control on the experimental equipment and constantly controls the experimental equipment.

However, in the test equipment with the above configuration, there are restrictions on the types of various setting values that can be used to prevent various events from occurring, and there are also restrictions on the relationship between setting values, for example, when two setting values change relatively. It was not possible to make connections, and it was not possible to repeatedly test the same content. That is, it has been difficult to achieve diversification of occurrence events, high precision, and reproducibility.

[Purpose of the invention]

The present invention solves the above-mentioned problems, can handle the diversification and high precision of various setting values for event occurrence, easily performs test reproducibility, and allows It is an object of the present invention to provide a test device that allows a bread press to switch a control signal to a non-test state or vice versa.

[Summary of the invention]

In the present invention, various occurring events are controlled by Ogunruso control, and in order to make this possible, the control signal to be output is A? It is characterized in that it is generated as an open-loop control signal, and that it switches bumplessly from a state in which no testing is being performed to a test state in which open-loop control is performed.

[Embodiments of the invention]

The present invention will be described below with reference to embodiments shown in the drawings.

Fig. 2 shows the configuration of a test device according to an embodiment of the present invention, in which the same reference numerals as in Fig. 1 indicate the same or corresponding parts, and the points different from Fig. 1 are the activation of various occurring events. a controllable central processing controller 12; and the central processing controller 12.
The point is that a signal switcher 9 is added to appropriately switch between the control signal from the programmer sol controller 5 and the control signal from the programmer sol controller 5.

In order to enable activation control of various occurrence events, the central processing control unit 12 is equipped with a condition setting signal output circuit 15 to perform open loop control. Turn output data table 1
4 as a patterned signal. Also,·
A signal processing function called Gunpress switching auxiliary circuit 17 is provided,
From the programmable controller 5 to the central processing control unit
The control signal is smoothly handed over to 'f and 12.

Hereinafter, the details of the functions of the test device will be explained step by step in a nuclear reactor core thermal M motion simulation experiment.

First of all, in order to start up the experimental equipment 1 to a state where experiments can be performed, the programmable controller 5 in the control panel 4
Shift feedback control (including hand i:lj7 operation)
The reactor is then set to high temperature and high pressure conditions similar to the operating conditions of a nuclear reactor.

Next, we will perform test control using the start-up 1b1 control signal, but first we will start with the start-up control signal that is required during open loop control and the turned data M and '+'.

Explain about orthotropy.

Here, the output data is patterned and sent, for example, when the coolant circulating in the reactor core decreases.
The heat removal effect from the fuel rods decreases and the exothermic temperature of the fuel rods begins to rise rapidly, but when simulating the thermal behavior at that time, it is necessary to This is because it is necessary to output various set values such as the flow rate of the experimental equipment 1.

To set this data, the operator must use the display device 21 and keyboard device 2 before starting the test.
2. The display @21 has a third
As shown in figure a, a table is displayed, and the output elapsed time and output data are inputted sequentially into the table using the keyboard device 22. This data is graphed in the third screen.
Figure b. This is no! Turn output data table 1
4, which changes stepwise over the course of one hour, and is sent as a start control signal to the flow rate regulating valve 2 of the experimental equipment 1 at the same time as the test starts. The created i4 turn data is stored in the magnetic disk 23, loaded into the pattern output data table 14 at the start of the test, and sent to the process input/output device 19 as a high-speed cycle signal by the condition setting signal output circuit 15. It is converted into a stain signal and sent to the experimental equipment 1 via the signal switch 9. Also, while the startup control signal is being output, changes in various set values from the experimental equipment 1 are read into the data recorder 8, and after the test is completed, the collected contents are displayed in a graph on the display device 21 for data analysis. Bangless switching auxiliary circuit 17 in the central processing control unit 12
If the programmable controller 5 takes over the control signal in the non-test state and outputs pattern data, if a deviation occurs between the final value of the control signal in the non-test state and the initial value of the turn data output value, the pattern output will not be normal. It was established to solve this problem, as it is no longer carried out.

When the test is started and the central processing controller 12 takes over control from the programmable controller 5, the bumpless switching auxiliary circuit 17 immediately sets the arm turn output value to match the initial value of the open-loose control. Feedback control is started.

Reference numeral 16 denotes a deviation signal detection unit that detects the feedback control target value (set the initial shift of pattern data) set by the control data processing unit 13 and the feedback signal 20 inputted from the experimental equipment 1 through the process input/output device 19. The deviation output value of the control signal is calculated from and outputted to the flow rate regulating valve 2 of the experimental equipment 1 by the bread press switching auxiliary circuit 17.

This feedback control continues for several tens of seconds until the handover signal in the non-test state becomes stable, that is, until the deviation settles within the permissible range, and then switches to open-loose control. Switching to open roots control or vice versa is effected by a signal switch 18.

The bottom of the groove also switches to a pan press when switching from a test state in which open loop control is performed to a non-test state, that is, when a control signal is switched from the central processing controller 12 to the programmable controller 5.

Even during open-loop control in the central processing control unit 12, the control signal 10 is always read as a branch signal to the programmable controller 5 and output to the signal switch 9 as a signal at the same level. It is placed in a non-testing state at 1 o'clock in the month. At the same time as the No. 1a switch 9 switches to the programmable controller 5 side, the control signal 6 that was in the non-test state is sent to the experimental setting 1, and the programmable controller 5 subsequently sends the feedback signal 7 to the experimental setting υSt 1
Read more and prepare for the next exam.

In this way, in this embodiment, the open-loose control method that outputs pattern data is used for various generation purposes. ;: control can be realized and still enable bangless switching from non-probation state to trial state or vice versa.

In the above embodiment, the initial value of the control signal of the central processing controller 12 when control is taken over from the programmer sol controller 5 is used as the initial value of the pattern output data.
Pan press switching can be performed in the same way by directly inputting the control 1 signal 6 outputted from the programmable controller 5 into the central processing controller 12 as its initial value.

〔Effect of the invention〕

As described above, according to the present invention, by creating glossy turn data and generating it as an open loop control signal, various occurring events can be accurately simulated.
In order to smoothly move from a test state to a non-test state (or vice versa) and increase test efficiency, there is still a central processing unit that performs open-loop control and a programmable controller that controls the non-test state. Control switching can be performed smoothly.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a conventional test device, Fig. 2 is a block diagram of a test device according to an embodiment of Misfire J, and Fig. 3a is a screen diagram of a pattern data list displayed on a display. , FIG. 3b is a graph showing the output values of the pattern data on a pen recorder or the like. l... Experimental equipment, 2... Flow rate adjustment valve, 3... Flow rate sensor, 4... Control panel, 5... Programmable controller, 6.10... Control signal, 7... Feedback Signal, 8... Data recorder, 9... 1 language switch, 12... Central processing control unit, 13... Control data processing unit, 14... Pattern output data table, 15... =A ('l=setting signal output circuit, 16.
... Deviation signal generator, 17... Pan press switching auxiliary circuit, 18... Signal switch, 19... Floss input/output device, 20... Feedback signal, 21... Display display device, 22・・・Key is a device, 23・
...Magnetic disk. (7317) Agent Patent Attorney Noriyuki Chika (and 1 others)
Figure 1 Figure 2

Claims (1)

[Claims] Means for starting and controlling the various events as a control system for experimental equipment that generates various events, and their actions IJh f:
In a test drive device equipped with a means for evaluating, the former is divided into two groove-bottom elements, - a groove-bottom element having means for activating each of the above-mentioned events, and the other is a groove-bottom element having a means for activating each of the above-mentioned events. The test equipment is characterized in that the experimental equipment is controlled while appropriately switching these two groove bottom elements to a pan press as component elements.