JPS59174790A - Automatic inspection device in movable container - 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] [Field of Application of the Invention] The present invention is directed to a nuclear reactor containment vessel (hereinafter abbreviated as PC■) in which the tip of an image guide is stored in an inspection vehicle that runs along a rail laid inside the reactor containment vessel (hereinafter abbreviated as PC■). The present invention relates to a mobile containment vessel inspection device suitable for closely monitoring various important equipment in a pPcV.

[Prior art]

As a conventional means of monitoring equipment inside the containment vessel, devices that move along the floor surface (platform) and running rails laid in the space inside the containment vessel have been considered. Because they are equipped with electronic parts such as parts, they are large and heavy and do not provide sufficient monitoring and inspection functions, and they also have drawbacks such as poor reliability under high temperatures and radiation.

[Purpose of the invention]

The purpose of the present invention is to address the shortcomings of conventional inspection equipment that moves along a running rail installed in the space inside the containment vessel, which has been considered as a means of monitoring equipment inside the containment vessel, such as high temperatures and poor reliability under radiation. An object of the present invention is to provide a highly reliable mobile containment vessel automatic inspection device.

[Summary of the invention]

In order to achieve the above purpose, the image guide tip and the purge guide tip are housed in an inspection device that moves along a traveling path installed in the containment vessel space, and the image guide is moved at a speed equal to the traveling speed of the inspection device. By centrally controlling the cable feed-out amount or take-up amount of the nozzle guide using a controller in the control panel, we have created a system configuration that allows the inspection device to closely monitor the object to be monitored. did.

[Embodiments of the invention]

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

FIG. 1 is a diagram showing a schematic configuration of an embodiment in which the present invention is applied in a PCM at the Boimizuya Nuclear Power Plant.

As is clear from Fig. 1, PCvl is the dry well 1
It consists of a dry well (a) and a suppression pool (1b), a dry well (b), a number of pipes (1), equipment, and structures that are densely arranged. Reference numeral 3 shown in this figure is a traveling rail of an inspection device 4 installed in the space inside the PCvl, and is fixed to various structures, piping, etc.

Figure 2 shows the system configuration. This system is an inspection device 4. Running rail 31 inspection device drive chain 7, image guide protection tube 13, purge guide protection tube 14. Drive mechanism section 41. It is composed of a control panel 34 and the like.

7. The inspection device 4 includes a light 17° that illuminates the object to be monitored; and an image guide 11. Objective lens 18 attached to the tip of the image guide. Transparent cover for protecting objective lens 19. A telescoping mechanism section 20 for bringing the image guide closer to the object to be monitored
．． A motor 21 that performs all control of the telescoping mechanism. A collector 9 that supplies power to the light 17 and motor 21. It consists of a protective tube 15 for the image guide, a storage tube 169 for the purge guide, a roller 10 for rolling the inspection device 4 along the traveling rail 3, and a fixed support 8 for fixing the inspection device 4 to the inspection device drive chain 7. Both are provided inside the PCv.

Outside the PCV are a roller 30 for feeding the image guide, a cable reel 31 for winding the image guide, a roller 33 for feeding the purge guide, and a roller 33 for winding the purge guide. A cable reel 32 to protect the inside of the image guide 1 PCV, a protection tube 13 that protects the inside of the image guide 1 PCV, a storage tube 14 that protects the inside of the purge guide = iPCV, a nozzle supply tube 25 that supplies purge gas to the inside of the image guide protection tube 13, and the purge gas. A purge valve 24 that supplies purge gas to the inside of the purge guide protection tube 14, and a purge supply pipe 25a1 that supplies purge gas to the inside of the purge guide. A pipe 27, a purge valve 26 for controlling the purge gas, and a gas pressure pongee machine 28.
, a barge gas cylinder/vehicle 29, an explosion valve 23 that constantly releases the image guide storage tube 13 when not inside the PCv, and a control panel 34 provided in the control room.

FIG. 3 is an internal structural diagram of the running rail 3.

As is clear from this figure, the running rail 3 is equipped with a trolley wire 6a for the light source 17, a trolley wire 6b for the telescopic mechanism control motor 21, and an image guide 11, a purge guide, etc. ↓ Cable duct designed to prevent sagging as well as protect 2) 3
It also has a and 3bk.

FIG. 4 shows a monitoring function block diagram. Inspection device 4f: When approaching the object to be monitored, the signal line 45 and drive control interface 37 are turned on by turning on the inertia device travel switch 38-a among the operation switch group 38 on the control panel 34.
, and signal lines 52 and 51, signals are transmitted to both inspection device drive side parts 37a and the image guide/purge guide drive mechanism part 41.

Inspection device drive mechanism section 37a that received inspection device travel No. 1g
By outputting all the signals to the inspection device drive mechanism section 42 through the signal line 60i, the inspection device drive mechanism section 42 moves the movement chain 7tl and connects the privately made chain 7 to the fixed support 8. The fixed inspection device 4 starts moving toward the object to be monitored.

Other than that, the output signal of the inspection device movement speed detector 42a attached to the inspection device drive mechanism section is centrally controlled via the signal line 61, the inspection device drive control section 37a1 signal line 52, the drive control interface 37, and the signal line 47. It is output to the controller 40. Also, the inspection device running signal? The received image guide and purge guide drive mechanism section 41 is connected to the signal line 54,
By outputting all signals to the image guide cable reel 311, the purge guide cable reel 32, the image guide feed roller 30, and the purge guide feed roller 33 through the image guide cable reel 311, the purge guide feed roller 33, and the purge guide 11, purge is performed. Controls the feeding, winding and winding of the guide 12. At this time, the signal of the detector 30.30a which detects the entire amount of image guide and purge guide (feeding, winding, etc.)
1, the signal is output to the general control controller 40 in the control panel 34 via the drive control interface 37 and the signal line 47.

The general control controller 40 receives the signals from the inspection device's traveling speed, image guide sending out/winding), and purge guide sending out/winding), and adjusts the image guide and purge kite sending timing in accordance with the four degrees of movement of the inspection device. 9) Output the control signal to the drive control interface 37 via the signal line 47, and output the control signal to the image guide, purge guide mm
It controls signals to the m structure section 41. With the above system, the image guide and the purge guide are controlled (i=011) (i=adjusted to the moving speed of the inspection device) to allow the inspection device to travel.

Next, supervisory control will be explained. When the inspection device 4 approaches the object to be monitored and is stopped, turning on 38-b of the operation switch group 38 on the control panel 34 turns on the light 17 that lights up the object to be monitored, and the object to be monitored is turned on. The image of the object is captured by the ITV camera 31a attached to the image guide cable reel through the objective lens 18 and the image guide 11, and after being converted into a nausea signal by the ITV camera 31a, the signal is transferred to the line 50 and the monitoring control interface. 36, signal line 43
The kidneys can be viewed on the TV monitor 35 on the control panel 34.

When monitoring the object to be monitored, if you want to monitor it closely, press 38-3 of the operation switch group 38 on the control panel 34.
CtON signal line 44, monitoring fftl control interface 36, Toro! j-#6b, the telescopic mechanism control motor 21 inside the inspection device is fully driven to extend the telescopic mechanism 20, and the telescopic mechanism control signal of the monitoring control interface 36 is sent to the signal line 49, the drive control interface. 37, Signal line 47tl - Supervisor i! 1
It is output to the J control controller 40, and the overall control controller 40 connects the signal line 47, the drive control interface 37,
By outputting an image guide advance signal to the image guide drive mechanism section 41 via the signal M51, the row 233 that performs the entire advance of the purge guide rotates, and the image guide is operated as required until the telescoping mechanism section 20 is extended. Performs transmission control.

Similarly, the expansion/contraction control of the telescopic rond can be stopped by transmitting the signal from the glue switch 20a inside the inspection device 4 to the monitoring control interface 36 via the trolley wire 6Ct- and cutting off the control signal of the telescopic wall structure control motor 21. The mechanism control motor 21 and the image guide feeding control are stopped by the drive control interface 37 via the signal line 49fc based on the signal from the monitor control interface 36. This is done by cutting off the image guide feed control signal.

The above system made it possible to monitor objects to be monitored.

Simultaneous control of the traveling control of the inspection device 40 and the control of the telescopic rock structure in the inspection device IT4 is achieved by interlocking the internal logic structure of the drive control interface 37 with a code.

Next, the control of the detonation valve 23 and purge valves 24, 24a and 26 will be explained.
When it turns on, it is output to the detonation valve 23 via the 1st key line 45, the drive control interface 37, the signal line 53, the valve control section 37b1 signal line 65, and the image guide protection tube 13 is ruptured. Purge valve 24.24a,
26 are used for turning purge gas on and off into the image guide protection tube 13, purge gas into the purge guide protection tube 14, and purge gas into the purge guide, respectively. switch group 38
By turning on all switches 38-e, f, and g, the signal line 45 and private control interface 37 signal i
53 to the valve control section 37b, and further to the 1g line 6.
2, 63, 64 for each purge valve 24, 24a, 2
6 It is possible to fully open. Purge valve 24, 243
To close ゜26, press 313- in the operation switch group 38.
This can be done by turning off the switches e, f, and g.

In addition, by using low-temperature N2 gas as the purge gas that is pressurized into the inertia device 4 through the entire purge guide 12, parts that need to be cooled, such as the motor 21 for controlling the telescoping mechanism in the inspection device, can be cooled. Of course, it is necessary to cool it down.

〔Effect of the invention〕

By fully adopting this system, the reliability of the inspection equipment, which runs along the 1-knoll installed in the reactor containment vessel using the conventional method, is reduced due to high temperatures and radiation levels. Since this solution can be solved, rapid monitoring and control using the control panel installed in the control room can be performed at all times even when the plant is in operation, reducing the exposure of patrol personnel by 41% and increasing the efficiency of the power plant! ll
This has the effect of significantly reducing the /l ratio.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a plaque to which the present invention is applied;
FIG. 2 is a block diagram of the stem of this invention, FIG. 3 is an internal block diagram of the inspection equipment #running rail of FIG. 2, and FIG. 4 is a block diagram of the monitoring function of the present invention.

Claims (1)

[Claims] 1. An image guide, which is a remote monitoring means for piping, valves, and other important equipment inside the reactor containment vessel; Inspection device equipped with a light to illuminate, a current collector for power supply to the light and the motor for controlling the telescopic mechanism 9. A purge guide that supplies purge gas to the inside of the inspection device, a trolley wire that supplies power to the inspection device, a purge guide, and an image guide. An inspection device equipped with a cable duct), a drive mechanism for sending out and winding up the purge guide and image guide, a drive mechanism that drives the storage tube and inspection device to move the purge guide and image guide into the storage container. A mobile containment vessel automatic inspection device comprising: a control panel provided in a control room; and cables connecting the control panel and each drive mechanism section.