JPS6122293A - Measuring device in nuclear-reactor reactor - 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 a device for measuring three-dimensional power distribution within the core of a nuclear reactor, and in particular, to a device that simultaneously measures neutron information and temperature information in a single system. The present invention also relates to an in-reactor measurement device that is capable of performing predetermined data geography and analysis and displaying the results.

First, in accordance with the overall layout of the in-reactor measurement device shown in FIG. 1, the configuration of this type of device and its operation will be explained as a premise for understanding the present invention. .

In FIG. 1, l is the reactor main body, which includes the reactor core, and from here on, simple 3 is the guide from /j path selection device 6 for selecting the insertion path into the reactor core. The simple 3 guided toward the tube t and the guide tube t are selectively connected via a device such as a seal table. The /j' passage selection device 6 and the 6 passage selection device j for operation mode selection are also connected by a guide tube t, and the passage selection device 6 and the driving device q are also connected by a guide tube t. connected by. In addition, a 6-passage selection device is installed in the guide tube t that connects the 6-passage selection device j and the drive device tei! A pull-out limit switch 7 is provided between the drive device and the drive device, and a safety switch 1 is provided between the drive device and the drive device. Also, the drive system for inserting the specified detector into the reactor core is basically a drive system and a 6-path selection device! and /j path selection device 6. The drive units are actually connected, and one detector is connected to each drive unit. And the same number of l! as the driving devices V! The outlet side pressure of each passage selection device 6 is connected to /j simple 3's, and in addition to 7 simple 3's for calibration, up to 60 simple 3's can be extended to the core. ing. 10 is a measurement control device for these. Further, the plurality of thermocouples 2 provided on the upper core plate 2tVc are connected to the reactor temperature measuring device 2 via the cold junction compensation box 30, and are further connected to the measurement control device io and the reactor temperature measuring device 2 through the cold junction compensation box 30. The measuring device 31 is connected to the process computer system 26.

Next, the configuration and operation of a conventional drive system, a conventional measurement control device, and a conventional temperature measurement device for such an in-reactor measurement device are shown in FIGS. 1 to 7, respectively. I will explain based on this.

[Prior art]

FIG. 2 systematically shows the drive system of a conventional detector. In this figure, // is the storage area of the detector, l is the calibration passage, and 13 is the input pipe section. 1, and the other numerical symbols represent the corresponding parts shown in FIG. In such a drive system, when no measurement work is being performed, the detector stored in the storage area //
It is pulled out to the pull-out limit switch by a command from the measurement control device IO (FIG. 1) to the drive device IO. Note that the safety limit switch 1 is provided to back up this pull-out switch.

The selection operation regarding which simple position in the core is to measure the power distribution is performed by the measurement control device i.

This is done by selecting the 6 passage selection device j, is passage selection device 1 by giving a predetermined command from the 6 passage selection device j, is passage selection device 1, and thereby the preparation for inserting the detector into the desired simple 3 is completed.

That is, for example, all of one one-passage selection device is "stored (
When "S)" is selected, a total of two detectors are stored in a predetermined storage area. Also, all of them are
When "Normal (N)" is selected, for example, for the drive device terminal with the symbol "person", a route is selected that goes through the 6-passage selection device yo with the same symbol "A" and reaches the 13-passage selection device i6 with the same symbol "A". Ru. For example, when the device with the symbol ``Person'' in the drive device l/- selects "Calibration (C)", this causes the 6-path selection device with the same symbol person!
A path is selected to reach the calibration path via the calibration path, and the detector is to be used in the corresponding calibration path. Also, for example, when the device with the symbol ``Person'' in the driving device Hiro selects [alternator]/(person/)J, this will change the selection device 5 from 6 passage selection device 5 with the same symbol to the 75 passage with symbol B. The route leading to the selection device 6 will be selected.

“Alternate Toko (person)” and “Alternate J (
A, 7) J also selects a different predetermined route.
) It is understood that the The 11 guide tubes t on the output side of the 1-path selection device 6 are, for example, 1
By sequentially selecting the simples from number to 15, it is possible to specify the simples to be used at a certain point. The preparation work for inserting the detector into Simple 3 described above is performed in this way.

In such a state, the detector connected to the driver 4I&c of the stand shown by A-D is connected to the measurement control device 1.
It is inserted into the reactor core by the drive control signal given to the drive device from 0, and the axial power distribution at a selected simple position in this core is measured, and the result is It is transmitted to the measurement control device 10 via the drive device.

Then, after the measurement operation in the core λ is completed, the used detector is pulled out to the corresponding pull-out limit switch and then stops its operation.

/1 While sequentially rotating the passage selection device 6 to select a different simple, by repeating the above-described insertion and withdrawal operations of the detector into the core, the axial direction at all simple positions in the core can be changed. The measurement control device i executes the measurement of the output distribution and obtains the result.

The three-dimensional power distribution within the reactor core is determined by subjecting the signals transmitted to the reactor to predetermined processing. That is, the detection signal from each detector is sent to the measurement control device rtt.

The data is sent to the process computer system 4 via , and subjected to predetermined data processing to determine the three-dimensional power distribution within the core.

Next, the configuration and operation of a conventional measurement control device will be explained with reference to FIG.

This is to control the drive of the detector in the drive system described above, as well as to apply some degree of geography to the signal obtained as a result of the measurement operation. In FIG. 3, the measurement control device 10, which is shown as a block indicated by a dashed line, is provided with necessary devices in a solid state. That is, the first keyboard /4(a, first peripheral microcomputer /ja, - first cobot memory /Aa, /?a, first data link controller lzaa, first line A first peripheral system consisting of a printer /Pa and a first floppy disk 10&, the first peripheral microcomputer /ja, and the first cobot memories /6a.

/? a and the first data link controller/ff
a are connected to each other by a first memory path controller 4/a, and the first line printer/9a and the first floppy disk 20a are connected to the first data link controller/la. and a first keyboard /&b, a first peripheral microcomputer /, tb, and one first cobot memory /Ab.

/? b. No. 1 first link controller/gb.

A first peripheral system consisting of a first line printer/9b and a second) Yotsubi Disco Ob, and a first peripheral microcomputer/! ;b.

The one first cobot memory /Ab, /? b and the first data link controller ltb are interconnected by a first memory path controller 4tb, and the first data link controller/lb is connected to the first line printer/lb and the first floppy disk. disk 20b
The first peripheral system is connected to the first peripheral system, consisting of the first drive control microcomputer tacho/a and g/process summer/θ coco a connected by the first process X10 buscoja. 1st
, wherein the first drive control microcomputer tacho/a is connected to the first cobot memory/A.
a, /4b, and the first drive control microcomputer tacho /b and the first process 110 cocob, which are connected by a first process X10 bus 2 kb. a first control system consisting of a microcomputer tacho for controlling the first drive;
b is the above-mentioned No. 1. Second cobot memory/ria.

The first control system connected to /7b is configured within the measurement control device 10. In addition, 3 is the detector drive system, which consists of 2 drive system members/,
It is divided into B/, C/ and D', and the front E first process 110 here a is divided into drive system A/,
The first process 11 is connected to the remaining drive lines C' I D'& C.

Note that the first . First mail (t
) Moribus 211a and -g-b each have the first. A first computer interface A and a first computer B are provided, and these interfaces are connected to the first computer interface A and B in the process computer system 26, respectively. It is connected to the first I10 boat roller a and roller b.

In the measurement control device gIt, lO having such a configuration, assuming that the first keyboard lhiroa is selected for operation, the first peripheral microcomputer /ja has one 1sl cobot memory /ja. 6a.

/7m, the first microcomputer tacho/a for drive control is controlled via the former, and the first microcomputer tacho/b for drive control is controlled via the latter.

These 14t and the first drive control microcomputer tacho/a, co/1) are connected to the first and first processes (1) and (1), respectively.

Via Coco A and Coco B, the drive systems PER/, B/ and C/, P/ in the detector drive system CoJ are controlled.

In this way, the signal from each of the detectors is one first
The data is transmitted to the first peripheral microcomputer/, ta via the cobot memories tba, i7a'tA.

The first peripheral microcomputer/ja collects data based on the transmitted signal and sends this data to a first line printer l, which is a peripheral device, via a first data link controller/fa. a and the first floppy disk drive Oh. That is, in this case, the first peripheral system in the measurement control device 10
and operated in conjunction with the first control system. In addition, the data collected as described above is input from the first I10 boat roller a to the process computer system roller via the first computer interface a, and after predetermined correction calculations are performed, various types of The analysis is performed, and the resulting updated information about the core status is stored, for example, on a corresponding floppy disk or displayed on the screen of a required display device.

Furthermore, when the first keyboard/llb is selected for operation, the first peripheral system within the measurement control device 10 is operated together with the first and first control systems.

In such a measurement control device IO, first and first drive control microcomputers 2/a.

When a failure occurs in one of the K/k), for example the latter, K is
The healthy first drive control microcomputer-/a controls its own drive systems A' and B',
Next, the drive system CI, which is not originally part of the company, p
/ will also be controlled.

A block diagram of a conventional furnace temperature measuring device 31 is shown in FIG. In this figure, the coolant temperature at the core outlet is measured by up to 13 thermocouples installed on the upper core plate 2g in the reactor, and this core outlet temperature signal and the thermocouple A compensation signal (resistance signal) from the temperature measuring resistor of the cold junction compensation box 30, which is maintained at a constant temperature of 5&C, is input to the furnace temperature measuring device 31 to perform the cold junction temperature compensation of 9. The above core outlet temperature signal is
The temperature is branched at this furnace temperature measuring device 31, and is transmitted directly to the process computer system, and is also transmitted to the first analog input machine JA& via the scanner unit 3.

(ll) In addition, the compensation signal from the resistance temperature sensor is converted into a voltage signal by the resistance-voltage conversion unit 35, and then directly transmitted to the process computer system Colo.
It is also transmitted to the analog input machine JA&. and,
These first. 1st analog input crab unit JA & , Ji
The output signal from b is the main memory IJ, ? Predetermined arithmetic processing is performed by the third data processing microphone, four computers, and the temperature of the thermocouple or resistance temperature detector selected by the operation unit 4to, the average temperature at the core exit, the minimum temperature, Crab knit 37 with digital maximum temperature,
Display unit via digital output Kaninit 3g)
/ is displayed, and the average, minimum, and maximum temperatures at the core exit are displayed in analog output 3? It is continuously recorded on the third recorder octopus via.

The conventional in-reactor measurement device described above requires an operator to monitor both devices in parallel in order to monitor the measurement control device 10 for measuring the in-reactor neutron flux and the reactor core state. there were.

In addition, in order to accurately grasp the state inside the reactor core, it is necessary to send both neutron flux information and temperature information to the process computer system 14, and perform the specified data processing. The system becomes huge, which is not economical, and it also has the disadvantage of not being able to immediately provide information to operators to quickly grasp the tertiary power distribution of the reactor core and make a comprehensive evaluation. there were.

[Summary of the invention]

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional device, and its purpose is to provide a means for performing predetermined data processing on temperature information from a furnace temperature measuring device within a measurement control device. The system has greatly improved functionality, allowing central monitoring of the three-dimensional power distribution inside the reactor by simultaneously measuring neutron flux information and temperature information with a single device and performing the necessary data processing. An object of the present invention is to provide an in-reactor measurement device including a measurement control device.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. In FIG. S, the same reference numerals as in FIG. 3 indicate the same or corresponding parts. The differences in configuration from the conventional device shown in FIG. 3 above will be explained as follows: 1. The first data processing microcomputers Google a and Doug
．． 24<k). and the data processing microcomputer aIIB.

1IFb is the 11th first process I10 bus 11 respectively.
, datb and the third. No. Hiro's process l10uta,
It is connected to the core side via 1I4b to receive signals from the thermocouple 2D and the resistance temperature detector.

Also, 1st. The second recorders IIEa and 1Itb are also connected to the first recorders IIEa and 1Itb, respectively. The first analog output unit F7a and the first analog output via Hiroki b. It is connected to the first memory pathcoor or, , 2+b. In this way, a measurement control device 10' with improved functionality is constructed.

Next, the operation of the embodiment of the present invention having the above configuration will be explained. The basic method of measuring the neutron flux inside the reactor is the same as that shown in FIG. The neutron flux distribution information collected by the first drive control microcomputer tacho/a, co/1) is the first. First data processing microcomputer 1Ila.

<ztb allows correction calculations and various necessary analysis operations to be performed. Regarding temperature measurement inside the furnace, signals from multiple thermocouples are sent to the upper IC via the 3rd and 3rd dub inputs I/o Il and 6b. 1st. No. 4 data processing microcomputer 4t41
The necessary arithmetic processing is performed in steps a and 41b, and the first. The various information selected with the first keyboard //Ia, /4tb, that is, the temperature information from the thermocouple or resistance temperature detector, the average temperature, minimum temperature, and maximum temperature at the core exit are displayed on the first keyboard.
．． The average temperature, minimum temperature, and maximum temperature at the core outlet are displayed on the display screen of the appropriate display device corresponding to the first keyboard /41a, /4(b). Continuously recorded on 'la, 4'lb.

In addition, the above-mentioned data processing microcomputer 1I44
a, lFb are redundant, so these means or the third. The second process l104<Aa.

If either one of the 1Iib systems fails, the data (l
j) Evening processing can be carried out without any problems.

In the above embodiment, one pair of data processing microcomputers was provided separately from the one pair of peripheral microcomputers, but it is possible to integrate the two to perform both peripheral device control and data processing. It's okay.

In addition, although we have shown an example in which 1 pair of recording needles are provided separately from 1 pair of line printers, the component equipment can be downsized by providing a trend logger that has both digital trend function and analog trend function. You can also do that.

Furthermore, in the above embodiment, each of the l pairs of data processing microcombinators measures all the thermocouples, but the thermocouples are divided into co-systems, and the thermocouples of each system are measured. may be distributed and measured among the l pairs of data geography microcomputers.

〔Effect of the invention〕

As explained above, according to the present invention, since the neutron flux distribution measuring device and the furnace temperature measuring device are integrated (1 group), the cost of the overall system can be reduced, and the furnace temperature measuring device can be reduced. It becomes possible to comprehensively process the output distribution information in a single device. Therefore, information necessary for monitoring the inside of the furnace can be displayed on the display device and immediately notified to the operator without depending on the operation of external devices such as a process computer system.

In addition, since the data processing microcomputers are provided redundantly, even if one of them fails, the remaining microcomputers can continue to perform the required measurements and data processing.

[Brief explanation of drawings]

FIG. 1 is an overall layout diagram of an in-reactor measurement device to which the present invention is applied, FIG. 2 is a diagram of a conventional detector drive system, and FIG. 3 is a diagram of a conventional measurement control device. FIG. 1 is a block diagram of a conventional furnace temperature measuring device, and FIG. S is a block diagram of an embodiment of the present invention. /-・Reactor, Co.. Core, 3.. Simple, Da.. Drive device, S.. Gutter selection device, 6../j' Passage selection device, Ri.. Pull-out limit switch, g.. Safety limit switch,?・・Guide tube, 10°/0′・・Measurement control device, //・Storage area, /J・・Calibration passage, 13・
・llY unit, /4'a. /4Zbe-1st. First keyboard, /, ta, /j
b・-1st. First peripheral microcomputer, /4a
,/? a...- first cobot memories, /Ab, /
7b--Two first 1-boat memories, /lla, It
ba・1st. First data link controller, /? a
,/deb-・1st. First line printer, Ko Oa, Ko ob - 1st. First floppy disk, ko/a, ko/b... 1st. First drive control microcomputer, coco al coco b1 1st. 1st process r/o
, Ko3...Detector drive system, 2'la, Koda b...
i/, first memory path, coja, 2. tb...g/,
g co-process I/θ bus, co-4... process it 1
31 m system, 24aβ1b...1st. 1st X1
0 boat, 27a, 2b...first, first computer interface, t--upper core plate, hump...thermocouple, 30...cold junction compensation box, 31...furnace temperature measuring device,
33...Main memory, 3da...Scanner unit, 3jT
...Resistance-voltage conversion unit, 36a, 36b...1st. First analog input crab knit, 3ri...digital input crab knit, 3t...digital output crab knit, 4t
O...operation unit), F/...display unit), 4<lI
a. 141b, J Co. 1st. first. 3rd data processing microcomputer, 4', ta, 4', tb-1st. First process I/o bus, 4tAa, +6b
*s 31st da process I/O, 41ria, lI
? b, 39 @ *1st, 1st. Third analog output, era. 4ttb, 4tco...1st. first. Third recording needle. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] The detection device is inserted from a drive device outside the reactor core via a path selection device for selecting an operation mode and a path selection device for selecting an insertion path for insertion of a predetermined detector into a desired position in the core. In a device for measuring the three-dimensional power distribution in the reactor core by a measurement control device based on signals from the reactor, means for measuring the neutron distribution in the reactor core, and monitoring and measuring the temperature in the reactor. A nuclear reactor in-reactor measurement system characterized by being integrally provided with a means for performing predetermined processing on this information, incorporating a redundant means for performing predetermined processing on this information, and including a means for displaying the result of the processing. Device.