JPH0418639B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an apparatus for inspecting and performing work in areas with high radiation levels, such as reactor containment vessels (hereinafter referred to as PCVs) in nuclear power plants.

[Technical background of the invention]

When inspecting, monitoring, or working inside a place with high radiation levels such as a PCV, it is not desirable for workers to enter the PCV, and it is not possible to perform sufficient inspections or work due to radiation concerns. . For this reason, recently a rail has been installed in the inspection space, and the trolley and electrical parts are mounted on this rail.
Inspection work vehicles equipped with TVs and other equipment are installed in a movable manner for inspections, etc.

[Problems with background technology]

The rail of the conventional inspection work device described above has a structure as shown in FIG. 1 or 2. That is, in the one shown in FIG. 1, engaging parts 4 into which the rollers 3 of the inspection work vehicle 2 enter are formed on both sides of the rail 1, and a chain guide is provided separately from the rail 1 on the side of the rail 1. 5 and a leakage cable 6 are arranged. If such a structure is adopted, the space 7 in the center of the rail 1 is wasted, and especially when it is introduced into a PCV with little surplus space, it becomes difficult in terms of space and furthermore, it becomes difficult to set the route. Furthermore, since the trolley wire 8 is disposed on the lower surface of the rail 1, there is a risk of electric shock to the worker.

Furthermore, in the case of the rail shown in FIG. 2, a chain guide 5 is provided in the center of the rail 1.
The cables 9 and 10 must be placed in locations other than the space occupied by the rail 1, and additional time is required for cable processing. Therefore, there is a space problem similar to that described above, and the structure is unfavorable in terms of reliability and structure.

Further, as described above, the inspection work vehicle 2 has a truck portion and equipment integrated into one body. Here, the bogie section can be fully used for about 40 years, which is the life of the plant, but the equipment cannot be used for a long period of 40 years without requiring any repairs or replacements. For this reason, when replacing equipment for inspection or work, the entire truck must be replaced.
There is a problem in that replacements, repairs, etc. are extremely large-scale.

[Purpose of the invention]

The present invention has been developed in view of the above-mentioned conventional circumstances, and its purpose is to be able to be easily introduced into places with little surplus space such as PCVs, and to be able to easily install equipment such as electric appliances and TVs from trolleys. can be easily removed and installed, making it easy to replace and install.
It is an object of the present invention to provide a space-mobile inspection work device that allows repairs and the like to be easily performed and has improved workability.

[Summary of the invention]

In order to achieve the above object, the space-mobile inspection work device according to the present invention includes a rail disposed in the inspection work space that has a portion for accommodating cables, chains, trolley wires, leaky coaxial cables, etc.
In addition, by containerizing equipment for inspection or work, the equipment can be attached to and removed from the trolley that moves along the rails, and furthermore, the equipment can be containerized using an elevating device and a loading/unloading device. The outline of the system is to branch out from the trolley and transport it into and out of the inspection work space.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the accompanying drawings.

Fig. 3 shows an example of the organization of a trolley constituting a part of the inspection work device of the present invention.
A trolley 12 is movably attached to rails 11 disposed inside via rollers. These carts 12 are connected to each other, and each cart 12
Containers 13, 14, 15 are attached to. And in the front container 13 there is a TV 16
Also, inside the intermediate container 14 is a radioactivity detector 1.
7, and the rear container 15 is provided with a manipulator 18 for operation.

As shown in FIG. 4, the rail 11 is provided with a chain guide 19 at the center thereof, and engagement portions 21 into which rollers 20 of the truck 12 enter are formed on the left and right sides. And the engaging part 21
The trolley wire 23 and the leaky coaxial cable 24 are respectively accommodated in the accommodation parts 22 and 22 formed between the chain guide 19 and the chain guide 19, and the space between the accommodation part 22 and the upper surface of the rail 11 is provided with a space as required. A cable 25 is arranged.

In addition, as shown in FIGS. 5 to 8, the trolley 1
2 has a substantially flat plate shape, and a pair of support brackets 26...26 are attached to both sides, and the rollers 20 are attached to the support brackets 26, and side rollers 27 with built-in springs are provided, and lateral rollers 27 are installed. Prevents slippage and wobbling. Also,
Notches 28 and 29 are formed on both sides of the trolley 12,
A contact (trolley) 30 is provided in the notch 28 for power supply and signal transmission/reception. Further, keys 31, 31 are formed in the front and rear ends of the cart 12 in the width direction, and a connecting mechanism as shown in FIGS. 7 and 8 is provided at the center of the front and rear ends. There is. That is, a flange portion 32 is provided protrudingly at the front and rear ends, a connecting rod 34 is connected to the flange portion 32 via a joint 33, and the bogie 12 is connected to another bogie 12 or the above. It is connected to a chain in a chain guide 19 provided on the rail 11. Also, the connecting rod 34
The inside of the cable 35 is hollow, and the cable 35 is inserted into the hollow part to the extent that the degree of freedom of the coupling mechanism is not impaired, and the cable 35 is electrically connected.

FIG. 9 is an overall view of the container 13, and FIG. 10 is an overall view of the container 14.
A key groove 37 that fits with the key 31 of the trolley 12 is formed in the front and rear upper ends of the main body 36 of the main body 36 in the width direction, and the TV 16 is attached to the front part of the main body 36 via a support bracket 38. A light 39 is fixed to the bottom surface, and the inside of the main body 36 is used as an electrical compartment.In addition, on the upper left and right sides of the main body 36, there are containers 1
Holes 40, 40 for fixing 3 are formed. Further, slot antennas 41, 41 and connector detachers 42, 42 are provided symmetrically on the left and right sides of the upper surface of the main body 36, so that they can be used from either the left or right direction. Note that the slot antenna 41 is not necessary when using the cable 35 to use an antenna from another container. Similarly, the container 14 has holes 40 and 4 in the main body 36.
0, a keyway 37, a slot antenna 41, and a connector detacher 42.

As shown in FIG. 11, the connector connected to the connector socket 43 of the cart 12 and used to transmit and receive signals with other containers and to supply power from the contact 30 is connected to the main body 36 by a hinge 44. The cover 45 is rotatably attached to the housing, the cover 45 is biased in the closing direction by a spring, the connector 46 is disposed inside the cover 45, and the cable 47 is connected to the connector 46.
It is connected and detached by operating the rod 48.

Next, a lifting device used for branching the containers will be explained based on FIGS. 12 to 17.
FIG. 12 is an overall view of the lifting device 49, and FIG.
Figures 1 to 16 are exploded views. The elevating device 49 consists of a vertical fixed rail 50 and an elevating body 51 that ascends and descends along the fixed rail 50, and the fixed rail 50 consists of two rails 5, as shown in FIG.
A pair of supports 53, 53 are fixedly installed on the tops of the cable winders 2, 52, and a cable winder 54 is rotatably attached to the supports 53. A composite cable 55 consisting of a signal cable and a load-bearing cable is wound around the winder 54, and the lower end of this composite cable 55 is tied to a movable rail 56. This movable rail 56 has rollers 58 on both sides that abut the grooves 57 of the rail 52 from the inside.
In addition, ball rollers 60 having balls 59 are provided in the center of both sides, and the elevator moves up and down using the same principle as an elevator.

Further, a lift 61 is fixed to the movable rail 56 via a connecting portion 62. This lift 61 is provided with a pair of slide rails 63, 63 protruding forward, and a slide rail 65 of a slide portion 64 is engaged with this slide rail 63, so that the slide portion 64 can freely slide relative to the lift 61. I have to. The slide portion 64 is provided with a cylinder 66, and the claw 68 is rotated by the operation of the rod 67 of the cylinder 66. As a result of its rotation, the claw 68 enters the hole 40 of the container body 36 placed on the slide section 64, as shown in FIG. 17, and fixes the container to the slide section 64.

Next, the operation of the lifting device 49 will be explained based on FIGS. 17 and 18.

First, container 13 (hereinafter container is 1)
3), lower the lift 61 a little in the d direction, move the slide part 64 in the a direction, and move toward the container 13. Then, move the slide part 64 a little in the direction c to the position of the imaginary line,
The cylinder 66 rotates the claw 68 and engages the hole 40 to fix the container 13. Next, the rod 48 is operated by the actuation of the cylinder 66, the connector detacher 42 is detached, and the cover 45 is closed. Thereafter, the slide portion 64 is moved in the b direction to be in the state shown by the solid line.

Also, to introduce container 13 on the route,
With the container 13 fixed to the slide part 64, the slide part 64 is moved in the direction a, the key groove 37 of the container 13 is aligned with the key 31 of the truck 12, and the container 13 is pushed into the truck 12. Then, by operating the rod 48 in the same manner as described above, the connector detacher 42 is connected to the connector socket 43 of the cart 12. Next, the cylinder 66 is driven to move the pawl 68 into the hole 40.
After the lift 61 is released, the lift 61 is lowered a little, the slide portion 64 is moved in the direction b, and when it has returned completely, it is moved in the direction c to enter the standby state shown by the solid line.

In this way, when moving the container to another route, the above-mentioned branching operation is performed after moving the container up and down in the c direction or d direction to the height of the desired route. The driving means for the lifting device is not limited to the cylinder type, but may be any other type such as a chain type.

Next, transport the container 13 out of the PCV or
The loading/unloading device for loading into the building will be explained.

FIG. 19 is a schematic plan view of the loading/unloading device 70, in which a wall 71 of the PCV is provided with an airlock 74 that spans the inside 72 and outside 73 of the PCV. This airlock 74 has the shape of a secret box, and has openings 75, 76 formed on the inside and outside sides, and these openings 75, 76 can be opened and closed by doors 77, 78. Further, a horizontal branching device 79 is provided within the airlock 74, and a rail 80 is provided near the opening 76 to the outside, and a container conveying device as shown in FIGS. 20 and 21 is attached to this rail 80. has been established. This conveyance device has a container 1 mounted on a cart 81 having a structure similar to the above-described cart 12.
A box body 82 that accommodates 3 is attached. As shown in FIG. 21, this box body 82 has a door 83 on its side that can be opened and closed, and is opened and closed via a motor 84, a pulley 85, a wire 86, and a link 87 fixed to the front end surface of the box body. It is becoming more and more popular.

In addition, FIGS. 22 and 23 show the loading/unloading device 70.
This figure shows a horizontal branching device 79 that forms part of the airlock 74, and a horizontal fixed rail 90 is attached to a support 88 provided in the airlock 74 with bolts 89.
A shaft 92 with a worm gear 91 in the middle is rotatably attached between the columns 88 by a support 93, while a motor 94 is fixed to the fixed rail 90, and the rotation of the motor 94 is controlled via a gear 95. The signal is transmitted to the gear 96 into which the shaft 92 is inserted. Thus, by driving the motor 94, the worm gear 91 rotates. The worm gear 91 meshes with a connecting portion 97 slidably attached to the fixed rail 90, so that the rotating portion of the worm gear 91 causes the connecting portion 97 to move along the fixed rail 90. Further, the connecting portion 97 is provided with a drive device 98 consisting of a motor and a speed reducer.
The pinion 99 of No. 8 connects the connecting portion 97 and the fixed rail 9.
A movable rail 100 slidably disposed between the
It meshes with the rack 101. As a result, the movable rail 100 is driven by the drive device 98 in the direction a or b in the figure.
move in the direction. A frame 103 is attached to this movable rail 100 via a hinge 102 at c or d in the figure.
It is pivoted so that it swings in the direction. Furthermore, this frame 103 has a slide portion 104 similar to the slide portion 64 provided in the lifting device 49.
is attached so that it can be slid in the direction e or f in the figure.

Therefore, by this horizontal branching device 79, the trolley 1
2 or 81, the container 13 can be attached and removed. Note that although the horizontal branching device 79 shown in the figure is capable of attaching and detaching two containers at the same time, it is not necessarily limited to two containers, but is capable of attaching and detaching one or three or more containers. It's okay.

Next, the operation of the loading/unloading device 70 will be explained based on FIGS. 19 to 22.

First, to bring the container 13 into the PCV,
A cart 81 to which a box body 82 containing a container 13 is attached is moved along a rail 80 to a point A.
Then, the opening/closing device opens the door 83 of the box body 82, moves further to point B, and stops. The operations during this time may be performed simultaneously or separately.

Next, the door 77 of the airlock 74 is closed, and the door 78 is closed.
In the opened state, take out the horizontal branching device 79 from the opening 76 to the outside 73, and remove the horizontal branching device 7 from inside the box body 82.
The container 13 is received on the slide portion 104 of 9. In other words, the container 13 is moved from direction i to direction j. After this, the horizontal branching device 79 is
4 and close the door 78.

Next, the door 77 is opened, the horizontal branching device 79 is moved in the direction from e to f to point D, and the container 13 is transferred to the trolley 12 waiting at point E in the direction from h to g. Thereafter, the horizontal branching device 79 is returned to the airlock 74 and the door 77 is closed, completing the loading of the container.

Moreover, when carrying out the container 13 from the PCV, it is sufficient to perform the operation opposite to the above. Incidentally, the container may be stored in the box 82 inside the airlock 74 instead of outside the PCV 73.

Further, FIG. 24 is a system configuration diagram of the spatially mobile inspection/working device of the present invention, in which → indicates a power supply system and ⇒ indicates a signal system.

The power supply 105 or the emergency power supply 106 is the switching device 10
Power is supplied from the container 7 to the trolley 30 via the penetration 108, and from this trolley 30, power is supplied to the container 13. Further, power is directly supplied from the penetration 108 to the lifting device 49, the branching device 79, the loading/unloading device, the chain drive device, etc.

On the other hand, the external 73 of the PVCV 71 includes a memory 109, a computer 110, a printer 111,
Power is supplied to the CRT 112, controller 113, and upper processing device 114.

In addition, the signal system passes through the multiplexer 115 via the penetration 108 to the containers 13,
It is connected to the position signal 116 and each device 49, 79, etc., so that it can communicate with the information processing device 114. In addition, the computer 110 is centered around the memory 109, printer 111, and CRT1.
12, controller 113, which allows signals to be exchanged with the information processing device.

As described above, the inspection/work device according to the present invention carries a container into the PCV by operation from the outside,
Transfer the delivered container to the designated route,
Inspect the inside of the PCV or perform work inside the PCV,
Also, move the container in the PCV to another route,
Furthermore, containers that require repair or replacement are transported inside and outside the PVC. The above is an example of implementing the present invention; for example, if a device for adjusting the lift angle is added to the connection part with the movable rail,
It can also be moved up and down on the curved orbit of the frame.

〔Effect of the invention〕

As described above, first of all, regarding the rail, various members are incorporated within the space occupied by the rail itself, which is advantageous in terms of space and simplifies route design and installation. Further, the noise of the trolley to other machines is reduced, the leaky coaxial cable is less susceptible to the noise, and the risk of electric shock caused by a worker touching the trolley is reduced. Furthermore, damage to the cable or chain guide due to work or the like is reduced, and the structure of the support can be simplified.

In addition, since equipment for inspection and work has been containerized, it is easier to replace and repair it, and the equipment can be transported into the PCV later, allowing containers contaminated with radiation to be placed in boxes and safely transported to designated locations. It is possible to transport equipment, and equipment can be organized in a wide variety of ways. For example, if a new type of container is developed, the whole container can be replaced, and even if a container is damaged during LOCA, it can be replaced with a new one. Can be exchanged. In addition, containers can be designed to fit the space of the plant, containerization allows the necessary items to be used for the required amount of time, and one system can be distributed and installed to form a single system using carts along the route. It is also possible to do so.

Furthermore, the lifting device of the present invention attaches and detaches containerized equipment to and from the above-mentioned cart and loading/unloading device, and also lifts and lowers the containerized equipment along a vertical fixed rail equipped with a cable winder. It has both lifting and lowering functions, allowing route changes to be made easily, as well as being able to move up and down on a track that follows the frame of the PCV.

The safety and reliability of the inspection and work equipment as a whole is improved as the space occupied by the rails is reduced, and the containerization of the equipment allows it to be introduced into plants where it could not be introduced in the past.

This eliminates the need for workers to enter the PCV, reducing radiation exposure, and enables inspection and monitoring even while the plant is in operation, leading to improvements in reliability, availability, and safety, and allowing problems to be discovered early in the morning. Furthermore, it has many effects such as eliminating the risk of contaminating the route when transporting equipment contaminated with radioactivity out of the PCV.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of conventional rails, FIG. 3 is a side view of a part of the inspection/work device according to the present invention, and FIG. 4 is a cross-sectional view of the rail of the inspection/work device of the present invention. , Fig. 5 is a perspective view of the cart, Fig. 6 is a perspective view of the rollers of the cart, Fig. 7 is a perspective view of the coupling mechanism, Fig. 8 is an exploded view of the coupling mechanism, and Figs. 9 and 10 are the containers. , FIG. 11 is a sectional view of the connector detacher, FIG. 12 is a perspective view of the lifting device, FIGS. 13 to 16 are partially exploded perspective views of the lifting device,
7 and 18 are side views explaining the operation of the lifting device, FIG. 19 is a schematic plan view of the loading/unloading device, and FIG.
Figure 0 is a side view of a truck equipped with a box body, Figure 21 is a perspective view of the box body, Figure 22 is a perspective view of the horizontal branching device,
Figure 23 shows the - of Figure 22 of the horizontal branching device.
A cross-sectional view along the line, FIG. 24, shows the inspection and inspection of the present invention.
FIG. 2 is a system configuration diagram of a working device. 1, 11, 80...Rail, 2, 12, 81...
...Dolly, 5,19...Chain guide, 8,23
...Trolley wire, 9,10,25...Cable,
13, 14, 15... Container, 16, 17, 1
8...Equipment, 24...Leaky coaxial cable, 49...
...Lifting device, 50...Fixed rail, 51...Elevating body, 61...Lift, 64...Sliding part, 70
... Carrying in/out device, 71... Reactor containment vessel, 74
...Aerotsuku, 79...Horizontal branching device, 82...
...Box body.

Claims (1)

[Scope of Claims] 1. A rail forming a storage area for chains, trolley wires, and leaky coaxial cables, a trolley that moves along the rail, and a container for inspection that is separate from the trolley. Or work equipment and
A loading/unloading device equipped with a horizontal branching device disposed in an airlock that isolates the work space from the outside and configured to inspect the equipment and carry it into and out of the work space; A spatially mobile type characterized by comprising a lifting device that is attached to and removed from the cart and the loading/unloading device, and has a lifting body that lifts and lowers along a vertical fixed rail equipped with a cable winder. Inspection work equipment. 2. The rail has a chain guide for storing the chain in the center, an engaging part for storing rollers attached to the trolley on both sides of the chain guide, and a trolley wire between the chain guide and the engaging part. 2. The spatially mobile inspection work device according to claim 1, further comprising: a housing section for housing a cable; and a housing section for housing a cable. 3. The spatially mobile inspection work device according to claim 1, wherein the trolley is provided with a coupling device for coupling with another trolley.