KR930008244B1 - Multi-cable connecting device for a nuclear reactor - Google Patents

Abstract

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Description

Multiple cable splice for nuclear reactor

1 is a geometric diagram suitable for implementation in the present invention.

2 is a side schematic view of some of the components of the preferred embodiment.

3 is a side schematic view of some other components of the same embodiment.

4 is a partial rear view of the components of the same embodiment.

5 is a partial front schematic view of the same embodiment.

6 is a side schematic view similar to FIG. 2 illustrating the preferred embodiment and its surroundings in more detail.

* Explanation of symbols for main parts of the drawings

1, 18: connector board 2: connector

3: fixed frame 4: cable bridge

5: operation lever 6: alignment socket

7, 8, 9, 10, 11, 12, 13, 14, 15, 16: Link 17: Worker passage

19: head structure 20: alignment device

21: motor 22: controller

The present invention relates generally to nuclear reactors and, more particularly, to multiple cable connection devices for use with nuclear reactors for the connection and control of multiple reactor head cables.

The nuclear reactor has a control rod drive device, a displacement rod drive device, a rod position indicator, and a plurality of electric wires connected to the reactor head structure for powering other mechanical devices.

When reactor heads are to be interrupted or displaced for maintenance and fuel replacement, many of the wires connected with the reactor head must be segregated and displaced to allow the reactor head to open.

For example, in advanced pressurized water reactors, a variety of power and instrument cables will probably run from 300 to 500 strands for each reactor.

If the reactor had to be opened, each of these cables would have to be interrupted by maintenance staff and then reconnected later.

During this operation, it is imperative to shorten the duration of the worker's exposure as much as possible to radiation that can be emitted relatively strongly around the reactor head.

While the cables are quickly reconnected, there is a significant possibility of additional maintenance costs caused by long downtimes and more worker exposure.

Reactor downtime is a double cost since replacement power must be obtained while the reactor is not running.

Since the connection and disconnection of hundreds of electrical connections is performed quickly, there is a possibility that an operator may make the wrong attempt to connect another cable to a particular socket. Although each connection is plugged in, there are multiple cables that are not impossible to make incorrect connections, and at least the cable plug or socket will be damaged. In some cases, reactors and their associated devices are designed to reduce reactor downtime during fuel change.

For example, the concept of rapid fuel replacement, published by Frisch and Andrews on September 17, 1974, is described in US Pat. Nos. 3,836,429 and 3,836,430.

In accordance with heterogeneous technical concepts, the electric cable is fixed on a support structure or bridge which can be displaced and has a sufficient cable length to be displaced a little apart with the reactor head structure allowing access inside the reactor. The use of long cables with spare parts is necessary in conjunction with the rapid fuel change concept, since the constant system associated with the reactor head, e.g. a device for holding control rods, remains active during fuel change. To lose. However, long cables involved in quick fuel replacement systems, and even displaceable supports, are disturbing and require specific designs for the reactor and its associated equipment. They also require specific design for the containment area and cannot be retrofitted into existing installations.

An important object of the present invention is to provide a multi-cable connection and interruption device which helps to reduce the radiation exposure of the operator, shorten the down time, and prevent the mistake of damaging the connector.

For a specific object of the present invention, the present invention is directed to an apparatus for connecting a plurality of energy transport lines to a nuclear reactor head structure, and may be displaced relative to each other to insulate the energy transport lines together with the reactor head structure. Each unit connector, which is a pair of matching pairs of connectors and each multi-connection board comprising a plurality of unit connectors, includes a pair of matching pairs of cooperative connection substrates that are supported. It is interlocked when brought in with each matching pair of connectors fixed to match the position on the connecting board, and the connecting boards follow a precisely set track so that each pair of connectors of the matching connector meet in a precise and accurate line. Contact the supporting structure on one end to guide the And, it shows the characteristics by the displacement device which is attached to a connecting plate on the other end.

According to a preferred embodiment of the present invention, the linkage is used with a displaceable plate that provides horizontal and vertical motion, ie pure translational motion.

Every reactor head connection may be imagined using a pair of matched plates. In many cases, however, it would be more practical and convenient to use multiple matched plates in accordance with the present invention which connects to a particular group of lines selected by function and location.

In particular, it is progressive to intercept and connect a particular system in a set state that can be used, and the group of cables that must be connected and interrupted at this same time could be included in the same matching plate.

It is also within the concept of the present invention to include the connection of non-wiring lines using the same connecting substrate or independent connecting substrates. For example, energy supply lines for transporting instrument compressed air, vacuums, gases, hydraulic fluids, etc. may be connected and disconnected using devices consistent with the present invention.

The invention will further clarify the following description of the preferred embodiment shown, by way of example according to the drawings.

FIG. 1 illustrates the linkage of a camppe based on the preferred embodiment shown in FIGS. 2 to 6.

In Figure 1, which is a geometric diagram, the interlock is shown in its entirety. By convention, capital letters in the figures indicate joint joints, and capital letters pairs in the description refer to links or other fixed connection members. The solid line illustrates the linkage in the extended state while the dashed line illustrates the linkage in the folded (contracted) position.

The member (link or fixed connection) for assembling the interlock is composed of AB, BC, CD, DF, CH, CG, EH, AG, FG and AH; Among them, each member has a relationship of AB = CG = DF = AH, AG = BC = CD = GF = CH, DE = EH, and DF × ED = CD ² . The dashed lines dd, ee and ff illustrate the displacement of the length DF in the plane of the drawing in the direction perpendicular to the DF, in the expansion and contraction of the camlock's linkage assuming the position D'F 'in the contracted state. The transition line of each point D, E, and F is shown.

According to FIGS. 2 and 3 and 4, the interlock device of FIG. 1 is composed of a 'KITE interlock device' (BC, CD, CH, EH, AH) and a parallelogram interlock device (BC, CD). Preferred embodiments of the present invention are shown, which are separated from what constitutes (CG, AG, FG).

In particular with reference to FIGS. 2 and 4, the displaceable multi-connector board 1 comprising the multi-connector 2 is shown in FIG. 1 and has links A "H", B "H", It is attached to the fixed frame 3 by an extendable linkage formed by the kite linkage portion of the linkage of the camper consisting of C "H", C "D" and E "H".

The kite linkage portion of FIG. 2 corresponds to the very portion of the linkage of the campfire shown in FIG. 1 having the same letter identified.

This interlock is advantageously connected to a multiple connecting substrate 1 which can be displaced along the vertical center line g as shown in FIG.

2 also shows a cable bridge 4 with a fixed frame 3 fixed thereto.

The actuating lever 5 extending C "H" beyond the point C ", for example, exerts a force in a clockwise or counterclockwise direction on the actuating lever 5 which, for example, manually contracts or extends the kite linkage. Are interlocked.

Also shown is an alignment device 6 for precisely aligning the multiple connecting substrates 1 that can be displaced.

The movement of the multiple connecting substrate 1 which can be displaced is as C "D", B "C", E "H", A "H", and C "H", respectively, which constitute the kite linkage. It is limited to the trajectory set by the above-mentioned link (7), (8), (9), (10), and (11).

The connecting substrate 1 is attached to the fixed frame 3 via the links 7 and 8 and the links 9 and 10.

The link 7 is connected to one end of the connecting substrate 1 at the center point D "and the end of the link 8 at the center point C". The link 8 is at a separate end of the connection board connected to the fixed frame 3 at the center point B ". The link 9 connects the center point E" at the connection board 1 with the center point H ", and the link (10) connects the center point H "together with the fixed frame 3 connected to the center point A". The link 11 connects the link 9 and (10) to any motion of the link 7 and (8). Connect the center point H "along with the center point C" to be transferred to the associated motion.

3 shows a parallelogram linkage of the Kempe linkage. In the preferred embodiment described above, the parallelogram linkage is presented as a pair of linkages, in which one linkage of the pair is connected to the connecting substrate 1 along the line h while the other is connected to the line i. It is connected to the connection board 1 along FIG.

2 and 3 show a multiple connection substrate 1, a connector 2, a fixed frame 3, a cable bridge 4, and an alignment socket 6. The links C "'D"', B "'C"', and F "'indicated by reference numerals (12), (13), (14), (15), and (16), respectively. G "', A"' G "', and C"' G "'correspond to the member CD of FIG. 1, BC, FG, AG, and CG.

The kite interlock is described in connection with the second diagram, and is attached to the centerline g of the connecting board 1, but acts as a parallelogram interlocking device with side faces such as a stabilizer that ensures accurate inclination free displacement of the connecting board 1. It is provided as an interlock.

The link 12 is connected to one end of the plate 1 at the center point D "'and is connected to the link 13 at the center point C"'.

The link 13 connects the center point G "'with the fixed frame 3 at the turning point B"'. The plate 1 is also connected to the fixed frame 3 via links 14 and 15. The link 14 is connected to the plate 1 at the center point F "'and to the link 15 at the center point G"'. The link 15 connects the center point G "'with the fixed frame 3 at the center point A"'.

The link 16 connects the center point C "'with the center point G"' such that any movement of the links 12 and 13 is transmitted to the links 14 and 15. As described briefly above, one interlock in FIG. 3 is connected to the connecting substrate 1 at points D "'and F"' along the line h, while the other interlock is connected at the point D "along the line i. It is connected at 'and F'.

5 is an embodiment of the front side of a multiple connecting substrate 1 in accordance with the present invention showing the connector 2. The mating fixing plate with supplemental plug (not shown in FIG. 5) works with the plate 1 to complete the connection. Any suitable type of connector can be used in practice as long as the connector can be fully engaged by the movement guided by the interlock.

6 illustrates a more detailed preferred embodiment.

The kite interlock described in connection with the second diagram is described to clarify that it is shown. The actuating lever 5 is shown accessible from an operator passage 17 fixed to the cable bridge 4. In addition, the connection board fixed to the reactor head structure 19 so as not to be displaced together with the connection board 1 which can be displaced in order to connect and control the connector 2 by the displacement of the connection board 1 described above ( 18 is shown. The connecting substrates 1 that can be displaced are aligned in line by the alignment device 20 by engaging the connecting substrates 18 to which the plates 1 are fixed so as not to be displaced.

The interlock can be actuated by passive force, while the actuating lever 5 can be driven by a motor as shown by reference numeral 21.

The motor 21 can be controlled remotely.

Also shown by reference is the controller 22 for driving the motor 21 which is operated to stop the motor drive when the connector 2 is fully engaged and the contact 23 is brought into contact with the circuit beacon. . In other embodiments of the present invention, other displacement devices that provide precisely controlled movement may be replaced with the aforementioned interlock devices.

Such a displacement device may consist of a mechanical, electrical, hydraulic compressed gas or other power driven displacement device in that the motion is precisely controlled by track and closing or other guides.

Advantages of the present invention include reducing the radiation exposure of the operator, shortening the best path head assembly time, simplifying connection and interruption operations, eliminating possible plug and socket mismatches, and reducing the need for damage and maintenance of the plug and socket. It includes the features.

Claims (5)

A device for connecting a plurality of energy transport lines to a nuclear reactor head structure, the apparatus comprising: a pair of cooperative interconnection substrates supported to be displaceable relative to each other to insulatedly connect the energy transport lines together with the reactor head structure. Each unit connector comprising a plurality of unit connectors and each of the multiple connector boards including a plurality of unit connectors and one of the matching pairs of connectors, each of which the matching multiple connector board is fixed to a position on the matching multiple connector board. It is interlocked when brought in with a matched pair of connectors: each pair of connectors in the splicer is connected to the supporting structure on one end to accurately guide the connection board along a precisely set trajectory to meet in a precisely aligned line. Connection and attachment to one of the connection boards at the other end Eojineun multiple cable connecting apparatus for a nuclear reactor characterized by a displacement device. 2. A multi-cable connection device for nuclear reactors according to claim 1, wherein the other multi-connection substrate is attached to the nuclear reactor so that it cannot be displaced in place on the head structure. 2. A multi-table connection device for nuclear reactors according to claim 1, comprising a displacement device and an interlock device that can be expanded and contracted to be suitable for controlling the movement of the displaceable connecting substrate to pure translational motion. 4. A linkage according to claim 3, wherein the linkage comprises a single parallelogram linkage separated into two from a kite linkage, wherein each linkage is operated on a joint and horizontal plane away from the connecting substrate which can be displaced. The plane is presented as similar to the direction of motion of the connecting substrate which can be displaced, the kite interlock is articulated to the connecting substrate which can be displaced along its centerline, and the two parallelogram interlocks are connected to both sides of the kite interlock. Jointed to a displaceable splicing substrate adjacent to an opposite edge disposed in the above, wherein the kite interlock includes first, second, third, fourth, fifth links, and first 2nd, 3rd, 4th, 5th, and 6th center points; The first link is connected to the joint at the connecting substrate which can be displaced at the first center point and to the second link at the second center point, the second link to the support structure at the third center point, the first link and the second link. The link has the same length, and the third link is connected to the connecting substrate which can be displaced from the fourth center point at regular intervals from the first center point, and the third link is connected to the fifth center point of the fourth link. The fourth link is connected to the support structure at a sixth center point at regular intervals from the third center point, the fifth link connects the second center point and the fifth center point, and as soon as the fifth link forces the arm, the kite Extending from the actuator arm through the second center point to extend or collapse the linkage, the distance between the second center point and the fifth center point equal to the length of the first link. The distance between the first center point and the fourth center point is equal to the length of the third link, the length of the fourth link is equal to the distance from the third center point to the sixth center point, and the product of the third link length and the fourth link length is The parallelogram linkage is divided into sixth, seventh, eighth, ninth, tenth links, and seventh, eighth, and nineth , Lesson 10, lesson 11, and twelfth center point; The sixth link is articulated to the connecting substrate which can be displaced at the seventh center point and articulated to the seventh link at the eighth center point, the seventh link is connected to the support structure at the ninth center point, and the eighth link is the seventh link. It is connected to a connecting substrate which can be displaced at the tenth center point at a constant distance from the center point and connected to the ninth link at the eleventh center point, and the ninth link is articulated to the support structure at the twelfth center point at a constant distance from the ninth center point. The tenth link is connected to the eighth and eleventh center points, among which the sixth, seventh, eighth, and ninth links have the same length, and the first and the first of the kite interlock. It has the same length as the second link, and the tenth link has a length equal to the distance between the seventh center point and the tenth center point, and the distance between the ninth center point and the twelfth center point, and the tenth link is chi The multi-cable connecting apparatus for a nuclear reactor, characterized in that as four links of linkage. 5. The nuclear reactor of claim 3 or 4, wherein an actuator is connected to the linkage for extending or contracting the linkage, and a motor is provided for driving the actuator device. Cable connection.

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