KR100680483B1 - Horizontal and Vertical Shifter of Nuclear Fuel Conveyor - Google Patents

Abstract

The present invention relates to a horizontal and vertical conversion device of the nuclear fuel transfer device, when the fuel replacement, the transfer of the spent fuel from the fuel building to the containment building or the spent fuel drawn from the reactor from the containment building to the fuel building more easily and safely It is to be handled.

The configuration of the present invention comprises a fuel transport pipe is installed to serve as a passage between the fuel building and the containment building, and the fuel transport pipe to transport the fuel-mounted portion on which the fuel is mounted by a support structure which is provided and supported in each of the fuel building and the containment building. Horizontal vertical conversion device of the machine, the wire rope is installed in the support structure in the nuclear fuel building and connected to move by the winch, and the transfer platform is connected to one side of the wire rope in the upper portion of the support structure to move by the wire rope And, it is connected to the transfer table and the fuel mounting portion is rotatably coupled to the structure consisting of a fuel carrier to make it possible to travel through the fuel transfer pipe between the fuel building and the containment building.

The present invention having such a configuration does not erect a fuel-mounted portion carrying nuclear fuel transported at the time of replacement of nuclear fuel in water from a nuclear fuel building to a containment building, or vice versa, using a separate hydraulic device as in the prior art. It is possible to provide a horizontal and vertical switching device for a nuclear fuel transfer machine that can be fixed and horizontally and vertically switched without any concern about contamination due to hydraulic oil leakage.

Description

A Horizontality and Verticality Conversion Apparatus of Nuclear Fuel Carrier}

1 is a view showing a horizontal vertical switching device according to the present invention,

2 is a front view of a transport table and a fuel transport unit of the horizontal vertical switching device according to the present invention;

3 is a plan view of a transport table and a fuel transport unit of the horizontal vertical conversion device according to the present invention;

4 is a view showing a state in which the bar of the engaging member installed on the upper portion of the support structure provided in the nuclear fuel building horizontal horizontal conversion device according to the present invention and the rotating disc,

5 is a view showing a state in which the bar of the engaging member installed on the upper portion of the supporting structure provided in the containment building of the horizontal vertical switching device according to the present invention and the rotating disc,

Figure 6 is a partial cutaway perspective view showing the structure of the stopper according to the present invention,

Figure 7a is a view showing the operating state of the horizontal vertical conversion device according to the present invention, a view showing the structure of the fuel transport and fuel mounting portion located in the nuclear fuel building,

FIG. 7B is a view of a state in which the fuel discharging part is inclinedly rotated by being rotated while being rotated while the rotation disc is caught by the bar of the locking member in the state of FIG.

FIG. 7C is a view of a state in which the rotating disc is rotated while being caught by the bar of the locking member so that the fuel mounting portion is rotated in the horizontal direction and inserted between the support plates of the fuel carrier, in the state of FIG.

FIG. 7D is a view illustrating a state in which the gas is moved further in the state of FIG. 7C and begins to enter the fuel transport pipe; FIG.

FIG. 7E is a view showing a state moved further in the state of FIG. 7D and exited from the fuel transport pipe; FIG.

Figure 7f is a view showing a state moved further in the state of Figure 7e completely out of the fuel transport pipe,

FIG. 7G is a view of a state where the fuel loading unit in a horizontal state is inclined by a rotation disc being caught by a bar of a locking member provided on a support structure provided in the containment building in the state of FIG. 7F;

FIG. 7H is a view of a state where the fuel mounting part is erected in the vertical direction by moving further in the state of FIG. 7G. FIG.

* Explanation of Signs of Major Parts of Drawings *

10: nuclear fuel building

20: containment building

30: fuel transfer pipe

40,41: support structure

42,43: locking member

42a, 43a: bar

50: fuel loading department

51: support piece

60,70: Wire Rope

61,71: Roller

80: transfer table

81: connector

90: fuel transport unit

91: support plate

92: wheels

93: axis

94: rotating disc

94a, 94b: combined groove

100: stopper

101: support wall

102: latch member

103: support groove

The present invention relates to a horizontal and vertical switching device of the fuel transporter, and more particularly, to the transfer of the fuel from the fuel building to the containment building or the transfer of the spent fuel drawn from the reactor from the containment building to the fuel building when the fuel is replaced. It is to make it easier and safer to handle.

In general, since the nuclear fuel transfer equipment handles nuclear fuel, which is a radioactive material, the main structure and the operation part are to be operated underwater (about 10 m) by filling the tank with water to prevent the driver's radiation exposure when the equipment is operated. The driving device for supplying power to the operating unit is installed on an operating floor rather than underwater.

Fundamentally, the fuel mounting part for transporting fuel is a device for transporting nuclear fuel. The fuel is put in one of the two storage spaces to move the fuel through a fuel transport pipe installed between the fuel building and the containment building.

For such fuel transfer, the driving equipment of the conventional nuclear fuel transfer facility comprises a winch for reciprocating the fuel mounting part from the containment building to the nuclear fuel building, and a hydraulic device for operating the fuel mounting part vertically and horizontally.

The winch is composed of an electric motor, a reduction gear, a coupling and a drum for driving the wire rope, and the hydraulic device is composed of a hydraulic actuator, a pipe and a cylinder.

Here, the cylinder, which is an operation unit of the hydraulic device, is a device for converting a fuel transporter from horizontal to vertical and vertical to horizontal through an expansion and contraction operation. One hydraulic device is installed in each of the nuclear fuel building and the operating floor of the containment building. It is operated by the power supplied from.

In addition, the winch is installed on the operating floor of the nuclear fuel building to secure the wire rope to the conveyer to push or pull the conveyer to move the fuel mounted to and from the fuel building and containment building to transport the fuel to both buildings. To do.

However, the winch for reciprocating the fuel mounting part from the containment building to the nuclear fuel building and the hydraulic cylinder operating the fuel mounting part vertically and horizontally are difficult to maintain because it is operated in about 10m of water in the reactor coolant, and the weakness of the hydraulic device. If foreign substances enter the cooling water due to phosphorus leakage, enormous economic loss and environmental pollution can occur.

In addition, since the hydraulic device is separately required in each of the buildings (containment building and nuclear fuel building), there is a problem in that enormous manufacturing costs are required according to facility preparation, and maintenance costs are also increased.

Accordingly, the present invention was invented to solve the above-mentioned conventional problems, by only removing the hydraulic device in order to prevent the above-mentioned conventional risk, only the winch installed in the operating floor of the existing reciprocating device It is an object of the invention to provide a horizontal and vertical switching device for a nuclear fuel feeder that is made safer and easier to maintain by allowing the upright machine to operate.

The present invention for achieving the above object is provided with a fuel transport pipe to act as a passage between the nuclear fuel building and the containment building, the fuel mounting portion is composed of a support structure which is provided and supported in each of the nuclear fuel building and the containment building A horizontal vertical switching device of a nuclear fuel feeder for transporting the fuel, the wire rope is installed in the support structure in the fuel building and connected to be moved by the winch, and the wire rope is connected to one side of the wire rope from the upper portion of the support structure to the wire rope. And a fuel carrier configured to be movable by being connected to the carrier and the fuel carrier being rotatably coupled to the fuel mounting part so as to be movable through the fuel transport pipe between the nuclear fuel building and the containment building. .

The fuel carrier is provided with support plates at intervals on both sides, and wheels are provided at the lower portions of the support plates to smoothly move from the upper part of the support structure along the longitudinal direction, respectively.

In addition, each side of the support plate is provided with a rotating disk to rotate through and coupled to the fuel mounting portion and the shaft, respectively.

The rotating disc has two coupling grooves formed on both sides of the shaft. One side of this coupling groove is rounded.

In addition, the upper portion of the support structure, the locking member for fixing the engaging groove of the rotary disk provided in the support plate of the fuel transport unit by the movement of the transfer table is fixed.

In addition, the lower portion of the support structure is a structure that is provided with a stopper to be fixed when the fuel mounting portion is erected vertically.

The stopper has a structure including a support wall, a latch member having a tension extending from the support wall to hold both sides of the fuel mounting portion, and a support groove for temporarily fixing in contact with a support piece protruding and formed in one fuel mounting portion. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a horizontal vertical switching device according to the present invention,

2 is a front view of a transport table and a fuel transport unit of the horizontal vertical switching device according to the present invention;

3 is a plan view of a transport table and a fuel transport unit of the horizontal vertical conversion device according to the present invention;

4 is a view showing a state in which the bar of the engaging member installed on the upper portion of the support structure provided in the nuclear fuel building horizontal horizontal conversion device according to the present invention and the rotating disc,

5 is a view showing a state in which the bar of the engaging member installed on the upper portion of the supporting structure provided in the containment building of the horizontal vertical switching device according to the present invention and the rotating disc,

6 is a perspective view showing the structure of the stopper according to the present invention;

Figure 7a is a view showing the operating state of the horizontal vertical conversion device according to the present invention, a view showing the structure of the fuel transport and fuel mounting portion located in the nuclear fuel building,

FIG. 7B is a view of a state in which the fuel discharging part is inclinedly rotated by being rotated while being rotated while the rotation disc is caught by the bar of the locking member in the state of FIG.

Figure 7c is further moved in the state of Figure 7b is rotated while the rotation disc is caught on the bar of the engaging member rotated in the horizontal direction the fuel mounting portion is inserted between the support plate of the fuel carrier,

FIG. 7D is a view illustrating a state in which the gas is moved further in the state of FIG. 7C and begins to enter the fuel transport pipe; FIG.

FIG. 7E is a view showing a state moved further in the state of FIG. 7D and exited from the fuel transport pipe; FIG.

Figure 7f is a view showing a state moved further in the state of Figure 7e completely out of the fuel transport pipe,

FIG. 7G is a view of a state where the fuel loading unit in a horizontal state is inclined by a rotation disc being caught by a bar of a locking member provided on a support structure provided in the containment building in the state of FIG. 7F;

FIG. 7H is a view of a state where the fuel mounting part is erected in the vertical direction by moving further in the state of FIG. 7G. FIG.

In the present invention, as shown in the figure, the fuel transfer pipe 30 to serve as a passage between the nuclear fuel building 10 and the containment building 20 is installed, respectively in the nuclear fuel building 10 and the containment building 20 A horizontal and vertical switching device of a nuclear fuel feeder, which is composed of support structures 40 and 41 which are provided and supported to transport the fuel mounting part 50 on which the nuclear fuel is mounted, and performs the operation underwater when the nuclear fuel is replaced.

The wire rope 60 is installed on the support structure 40 in the nuclear fuel building 10 and connected to be moved by a winch (not shown) installed outside the water, and the wire rope 60 at the upper portion of the support structure 40. (70) and one side is connected to the transport table 80 is formed long in the horizontal direction to move by the wire rope 60, 70, and the fuel mounting portion is connected to the transport table 80 to be movable 50 is rotatably coupled to the structure consisting of a fuel transport unit 90 to be made possible through the fuel transport pipe 30 between the fuel building 10 and the containment building 20.

Although not shown, the winch to move the wire rope 60, 70 as a normal equipment, installed outside the water, and used as a drive motor and a winding drum, detailed structure and operation description Is omitted.

The valve 31 is provided at the end of the fuel transfer pipe 30. The valve 31 is to perform the opening and closing operation of the fuel transfer pipe 30, and since the conventional structure, detailed description thereof will be omitted.

The wire ropes 60 and 70 are provided to be movable via a plurality of rollers 61 and 71 provided on each element of the support structure 40.

In addition, the wire ropes 60 and 70 are connected to the conveyer 80 to connect the conveyer 80 to one side of the lower portion of the conveyer 80 to form a connector 81, the wire The ropes 60 and 70 are fixed.

In addition, the fuel mounting portion 50 has a structure in which the fuel inlet forms a funnel and has a rectangular shape having an empty space therein.

Here, the fuel transport unit 90 is provided with a pair of support plates 91 at intervals on both sides, and smoothly at the upper portions of the support structures 40 and 41 along the longitudinal direction, respectively, below the support plates 91. The wheel 92 is provided to be movable.

In addition, each side of the pair of support plate 91 is provided with a rotation disk 94 for rotating through and coupled by the fuel mounting portion 50 and the shaft 93, respectively.

The rotating disc 94 has two coupling grooves 94a and 94b formed on both sides of the shaft 93. One side of the coupling grooves 94a and 94b is rounded and formed shorter than the other side. The rounded portion passes through the bars 42a and 43a of the locking members 42 and 43 to be described later. It is to be possible.

In addition, the support plate 91 of the fuel transport unit 90 by the movement of the transfer table 70, the upper portion of the support structure (40, 41) respectively installed in the fuel building (10) and the containment building (20). Locking members 42 and 43 are fixed to the engaging groove (94a) (94b) of the rotating disc 94 provided in the hook to rotate.

The locking members 42 and 43 are installed in the support structure 40 in the fuel building 10 and the containment building 20, but have different structures installed in the fuel building 10 and the containment building 20. That is, the locking member 42 installed in the nuclear fuel building 10 has a support 42 which stands vertically, and a bar 42a protruding in the transverse direction on the upper portion of the support 42 is formed to the rotation disc ( 94 to catch the locking groove, the locking member 43 is installed in the support structure 41 in the containment building 20 is provided with a bar (43a) is located in the lower portion is caught by the rotation disc 94 The groove is caught and rotated.

In addition, the lower portion of the support structure 40, 41 is a structure that is provided with a stopper 100 to be fixed when the fuel mounting portion 50 is standing vertically.

The stopper 100 includes a support wall 101 vertically entered, a latch member 102 having tension to hold both sides of the fuel mounting portion 50 while extending laterally from the support wall 101; The support groove 102 is formed in contact with the support piece 51 formed in one fuel mounting portion 50 to be temporarily fixed.

In the present invention having such a configuration, when transporting nuclear fuel for nuclear fuel replacement, that is, when transporting from the fuel building 10 to the containment building 20, since there is a risk of radioactive leakage, the transport apparatus of the present invention is The operation takes place while submerged.

Basically, in the state in which the fuel mounting portion 80 is erected in the vertical direction, the fuel rod portion 80 is moved by the upper portion of the support structure 40 provided in the nuclear fuel building 10. The wire rope 60 is held by a winch (not shown). When pulled, since the connector 81 of the transfer table 80 connected to the wire rope 60 is moved at the same time, the transfer table 80 starts to move from the right side to the left side in the drawing.

Then, the support plate 91 of the fuel carrier 90 connected to the end of the carriage 70 also starts to move by the wheel 92. When the fuel transport unit 90 reaches a predetermined position of the support structure 40, as shown in FIG. 7A, a stopper 100 is provided at the lower portion of the support structure 40, by the stopper 100. The fuel mounting portion 80 is fixed or the fuel mounting portion 80 is locked and fixed to the stopper 100 from the beginning.

The stopper 100 is provided with a latch member 102 having a tension on both sides at intervals in the transverse direction from the standing support wall 101, the fuel mounting portion 50 enters between the latch member 102 At the same time, the support piece 51 which protrudes and is formed in one side of the fuel mounting part 50 is fixed while being fitted into the support groove 103 of the stopper 100.

In this state, the nuclear fuel may be introduced from the upper portion of the fuel mounting portion 50 and transferred to the containment building 20. At this time, the winch is pulled again to pull the wire rope 60, and the predetermined structure of the support structure 40 is provided. The engaging grooves 94a of the rotation discs 94 provided on the support plate 91 are caught by the bars 42a of the locking members 42 fixedly installed at the positions, and the fuel transport unit 90 is continuously moved. As shown in FIG. 7B, the rotating disc 94 rotates naturally because the hanging bar 42a is eccentrically positioned.

Accordingly, the fuel mounting portion 50, which is coupled to be rotatable simultaneously through the rotating disk 94 and the shaft 93, is rotated and lying in the horizontal direction to be inserted between the supporting plates 91, and continues to move, FIG. 7C. And as shown in Figure 7d, the bar 42a is released from the engaging groove (94a) of the rotary disk 94 to pass through the fuel transfer pipe (30).

When passing through the fuel transfer pipe 30, it meets the containment building 20, the support structure 41 is also provided in the containment building 20, the fuel transport unit 90 is reached, at this time the support structure 41 7E and 7F, as shown in FIGS. 7E and 7F, coupling grooves of the bar 43a of the locking member 43 and the rotating disc 94 provided on both sides of the support plate 91 are provided. When the 94b is caught and rotated, accordingly, as shown in FIGS. 7G and 7H, the fuel mounting portion 50 also rotates to stand in the vertical direction, and when the fuel mounting portion 50 is completely built in the vertical direction. It is fixed while being caught by the latch member 102 of the stopper 100 disposed below the support structure 41.

Here, when conveyed in the state of FIG. 7E to FIG. 7F, due to one rounded portion of the engaging groove 94b formed in the rotating disc 94, it is smooth when caught by the bar 43a of the locking member 43. It can be inserted smoothly.

On the contrary, in the case where it is desired to transfer from the containment building 20 to the nuclear fuel building 10 again, if it is operated in the reverse order of operation, the transfer is smooth.

As described above, the present invention does not erect a fuel-mounted portion carrying nuclear fuel transported in the water at the time of replacement of the nuclear fuel from the nuclear fuel building to the containment building, or vice versa. There is no concern about contamination due to leakage, and there is an effect that it is possible to provide a horizontal and vertical switching device of a nuclear fuel transfer machine that can be fixed mechanically and reliably, horizontally and vertically.

Although the present invention has been described for the embodiments of the present invention based on the accompanying drawings for convenience, it is obvious that various modifications and changes are possible within the scope of the technical idea of the present invention.

Claims (9)

A fuel transport pipe 30 is installed to serve as a passage between the nuclear fuel building 10 and the containment building 20, and the support structure 40 is provided and supported in the nuclear fuel building 10 and the containment building 20 respectively. 41) is a horizontal and vertical conversion device of the nuclear fuel feeder to transfer the fuel mounting portion 50 is mounted nuclear fuel, A wire rope 60 installed on the support structure 40 in the fuel building 10 and connected to be moved by a winch; A transfer table 80 which is connected to one side of the wire ropes 60 and 70 at an upper portion of the support structure 40 to move by the wire ropes 60 and 70; The fuel mounting unit 50 is rotatably coupled to the transfer table 80 to be movable, and the fuel is allowed to travel through the fuel transfer pipe 30 between the nuclear fuel building 10 and the containment building 20. Horizontal vertical switching device of the nuclear fuel feeder, characterized in that it comprises a carrying unit (90). The method according to claim 1, The fuel transport unit 90 is provided with a support plate 91 at intervals on both sides thereof, so as to be able to move smoothly in the upper portions of the support structures 40 and 41 along the longitudinal direction, respectively, at the bottom of the support plate 91. Horizontal vertical switching device of the nuclear fuel feeder, characterized in that the wheel 92 is provided. The method according to claim 2, Each side of the support plate 91 is provided with a rotating disk 94 for rotating and penetrating and coupling by the fuel mounting portion 50 and the shaft 93, respectively. Device. The method according to claim 3, The rotating disc (94) is a horizontal vertical switching device of the nuclear fuel feeder, characterized in that two coupling grooves (94a) (94b) are formed on both sides of the axis (93). The method according to claim 4, One side of the coupling groove (94a) (94b) is a horizontal vertical switching device of the nuclear fuel transfer, characterized in that the rounding process. The method according to claim 1 or 2, In the upper portion of the support structure (40) (41), the coupling groove (94a) (94b) of the rotary disk 94 provided in the support plate 91 of the fuel transport unit 90 by the movement of the transfer table (70) The horizontal vertical switching device of the nuclear fuel feeder, characterized in that the locking member (42) (43) to allow the rotation to be caught. The method according to claim 1 or 2, Under the support structure (40) (41), the horizontal vertical switching device of the nuclear fuel feeder, characterized in that the stopper 100 is provided to be fixed when the fuel mounting portion 50 is standing vertically. The method according to claim 7, The stopper 100 is a nuclear fuel feeder, characterized in that the support wall 101 and the latch member 102 having a tension extending from the support wall 101 to hold both sides of the fuel mounting portion 50 is formed Horizontal and vertical switching device. The method according to claim 8, The support wall 101 of the stopper 100 is horizontally vertical of the nuclear fuel feeder, characterized in that a support groove 102 is formed so as to be temporarily fixed in contact with the support piece 51 protruding and formed in the fuel mounting part 50. Switching device.

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