JPS61209392A - Underwater television device - 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 (Industrial Application Field) The present invention is an underwater television used for failure inspection of fuel transfer equipment, control rod replacement equipment, etc. underwater in a reactor cavity in a reactor containment vessel. It is related to the device.

(Prior art, problems) Conventionally, failure inspections of fuel transfer equipment, control rod replacement equipment, etc., which were performed underwater in the reactor cavity in the reactor containment vessel, were performed from the operation floor above the water surface of the pool. Underwater television cameras and lighting equipment are suspended separately in the water of the reactor cavity using wire ropes, and workers manipulate the wire ropes to operate the underwater television cameras and lighting equipment individually, adjusting their height and inclination. However, the adjustment of underwater television cameras and lighting equipment is time-consuming and
Problems include the fact that the underwater television camera is shaken, making it difficult to observe the water, and it takes a lot of time to conduct one inspection.

(Objective of the Invention, Means for Solving Problems) The present invention has been developed to solve the above-mentioned problems. A support rod is installed vertically, a 1X14 firefly member with a posture that is rotated around a vertical axis is attached to the lower end of the support rod, and an illuminated underwater television camera that is rotated around a horizontal axis is attached to the attitude adjustment member. It is characterized by a configuration in which a telescopic drive mechanism for the support rod and a rotation drive mechanism for the attitude adjustment member and the underwater television camera are provided;
Underwater lighting can be achieved by providing a support rod that is extendable and retractable on a mounting frame that projects above the water surface of the pool, and attaching a posture adjustment member equipped with an illuminated underwater television camera to the lower end of the support rod. The fixing performance has been improved as well as the vertical adjustment of the attached underwater TV camera, and the attitude adjustment member at the bottom end of the support rod can be rotated around the vertical axis, and the attitude adjustment member can be used to rotate the illuminated underwater TV camera around the horizontal axis. By attaching a driving mechanism, the underwater television camera's directional performance has been improved and remote control has been made possible, significantly improving underwater operational performance, inspection performance, and reliability, and solving the above-mentioned problems. We are here to provide underwater television equipment.

(Embodiment of the invention) An embodiment of the present invention is shown in FIGS. 1 to 7.
In Fig. 1, (α) is a pool in the reactor cavity, etc., and a pedestal (5) is fixed to the draining hole (4) of the pit, and a pedestal (6) is further fitted to the pedestal (5). The supporting metal fittings (6a) of the frame (6) are provided protrudingly, and the pool (α
) A telescopic support rod (3) that is constructed on a mounting frame (5, 6) that protrudes above the water surface and that can be expanded and contracted in the length direction.
The flange (3α) fixed on the upper part of the support bracket (6α) is fitted into the tip of the support fitting (6α) to support it, and the support rod (3) is supported and suspended on the tip of the mounting frame (5, 6). In this configuration, the winch (8) for telescopic operation of the support rod (3) is installed on the mount (on top of the mounting base) that is fixed on the top of the support rod (3).
) is provided and configured as a telescopic drive mechanism. The winch (8) has a mechanism that moves an illuminated (zoom type) underwater television camera (1) (described later) up and down by the expansion and contraction of the support rod (3).

The expansion and contraction mechanism of the support rod (3) is not limited to the telescope type, but may be a structure in which a plurality of support rods are connected with a joint so that they can be relatively expanded and contracted.

Further, an attitude adjusting member (2) which is rotatably operated around a vertical axis is attached to the lower end K of the support rod (3), and an attitude adjusting member (2) which is rotatably operated around a horizontal axis is attached to the lower end of the attitude adjusting member (2). An underwater television camera (1) with illumination is disposed to constitute an underwater television apparatus.

The attitude adjustment member (2) will be described in detail. As shown in FIG.
A shaft Ql with a K gear (11) is installed vertically, a main body α2 is attached to the core shaft Ql via a bearing so that it can be rotated on a vertical shaft, and a motor 0 with a reducer is attached to the main body α3. The gear α on the output shaft side of the motor αj is fixedly connected to the shaft α.
The motor (13
When the gear α is rotated, the gear Q4 rotates on the gear αB, and the shaft (1
1, that is, a rotational drive mechanism (13, 14, 1
0,11) K is configured.

Further, to describe in detail the cast configuration and rotational drive mechanism of the illuminated (zoom type) underwater television camera (1) disposed on the attitude adjustment member (2), as shown in FIG. 2) A rotation axis αη is provided at the bottom of the main body of the mackerel,
A mounting bracket (1
1, an underwater television camera with illumination (1) is removably attached to the underwater television camera with illumination (1), and the underwater television camera with illumination (1) is attached to the horizontal axis (rotation The motor (1"9 output shaft side worm (161 is a form oil fixed to the rotation axis αη) is arranged to be rotated around the rotation axis αη) and is fixed to the main body α2. aυ, the motor (19) connects the worm αe, the worm wheel 08, the rotating shaft αη, and the mounting bracket (19) to the illuminated underwater television camera (1
) is indicated by the arrow (a) around the horizontal axis relative to the posture adjustment member (2) K.
Rotary drive mechanism (15, 1) that is rotated as shown in (b)
6, 17, 18, 19).

Furthermore, the above-mentioned pedestal (
6) - As shown in Fig. 3, a pair of side plates (6b) connected by connecting plates (6C) (6C)
) C6b"), the supporting metal fittings (6α) protruding from the side plates (6h) (6b), and a pair of abutment plates (64) fixed and in contact between the lower sides of the side plates C64) C6b) (6g)
and the handle (6b) fixed on the side plate C6b) (6b).
6f) From (6f) onwards, the upper part of the support rod (3) is fitted into the tip of the support fitting (6cL), and a ring part for supporting the 7 langes (3α) is provided. (The ring portion has a hole with a shape corresponding to the cross-sectional shape of the support rod (3).)
) As shown in FIG. 4, a pair of end plates (5α) (5α
) are integrally connected by a pair of connecting plates C5b) C3h), and the connecting plates C54) C5b) and end plates (5α) (
5cL) and a connecting plate (5b) fixedly installed between the
A plurality of guys arranged on the inner side of (5b))'
d) Drain (4) as shown in Figure 4 (C).
It is a trap structure that is fitted into the trap and fixed with bolts, etc.

The pedestal (5) and the pedestal (6) are, as shown in FIG. 5, a mounting pedestal that is attached to the drainer (4) and protrudes above the water surface of the pool to support and hang the support rod (3). (5, 6
)It has become. To explain another embodiment of the frame fixed to the handrail of the crane deck, as shown in Fig. 6, stoppers <20
h) Fix C204) and hollow material (20C) (20
') to the beam (20α) and stopper (20b) (zob)
and connect the column (20C) (20C) to the connecting plate (20d
), and fix the support plate (20) to the beam (204), and use the pusher u (2
Press the pillar (20C) (20
By sandwiching it between (2) and (2), the pedestal (2) is attached to the handrail QDK.

Furthermore, to explain the pedestal @ of another embodiment in which the support rod (3) is supported and hung vertically using the pedestal (A),
As shown in FIG.
b) is fixed, a supporting metal fitting (22c) is attached to the pedestal (22) by an appropriate means and protrudes, and the pillar C
22b) (22b) are connected by a chevron (22d),
Guy fixed to the bottom of the pedestal (22α)
) and (22f) are fitted to the beam (20) of the pedestal (A), and a moving handle (22y) (22y) is fixed to the side of the pedestal (22α). As shown in Figure 5, the support rod (3) is supported and hung vertically at the tip of the support fitting (22c), and the crane deck is supported by the mount (A) and the mount @. It is configured as a mounting frame (20, 22) that is attached to the handrail (211) and supports and suspends the support rod (3).

(Function) Since the embodiment of the present invention has the above-described configuration, when using the underwater television device of the present invention in the reactor containment vessel, it is necessary to (4)
Fix the mounting frame (5, 6) to the pool (α), protrude above the water surface of the pool (α), and use the support bracket (5α) to support and hang the support rod (3) as shown in Fig. 5. The mount (6) is moved laterally using the handle (6f) to inspect the fuel transfer device, control rod replacement device, etc.

Or handrails of fuel handling cranes inside the reactor containment vessel and spent fuel pit cranes inside the fuel handling building Q1)
Attach the mounting frame (20, 22) (Figs. 6 and 7), support the support rod (3) with its support metal fittings (22C), and hang it vertically. It can be used for visual inspection of spent fuel assemblies, checking for foreign objects in spent fuel racks and fuel exchange canals, etc.

When in use, the support rod (3) is extended and contracted in the vertical direction using a winch (see Figure 8-1) to provide illumination (wide type).
Raise and lower the underwater television camera (1) and use the attitude adjustment member (2)
The main body (1'J
At the same time, the underwater television camera (1) is placed in a horizontal plane at 36
00 full rotation operation, and one rotation drive mechanism (15, 1
6, 17, 18, 19), the underwater television camera (1) can be rotated around the horizontal axis, and the height, direction, and inclination of the underwater television camera (1) can be freely controlled remotely, and inspection performance is significantly improved. It has been improved.

In addition, the pedestal <5> (6), (21 units, support rod (3)
, attitude adjustment member (2), underwater television camera with illumination (1)
It can be easily disassembled and assembled, and its light weight and size make it convenient for transportation and storage.

(Effects of the Invention) As described above, the present invention supports and suspends the support rod (3), which is extendable and retractable, on the mounting frame (5, 6-20, 22) protruding above the water surface of the pool (α). At the same time, an attitude adjustment member (2) that is rotated around a vertical axis is attached to the lower end of the support rod (3), and an illuminated underwater television that is rotated around a horizontal axis on the attitude adjustment member (2). Since the camera (1) is provided, and the expansion and contraction drive mechanism of the support rod and the rotation drive mechanism of the attitude adjustment member and the underwater television camera are attached,
The directivity and fixation performance of the illuminated underwater television camera underwater has been significantly improved, and remote control is now possible.
It has excellent inspection performance and reliability, and has a relatively simple structure that can be assembled and disassembled, making it extremely convenient for transportation, storage, etc.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that the design can be modified in any way without departing from the spirit of the present invention. be.

[Brief explanation of the drawing]

Figure 1 is a side view showing the overall configuration of the present invention, and Figure 2 is a side view showing the overall configuration of the present invention.
An enlarged side view showing a partial cross section of the posture adjustment member shown in the figure, No. 3
Figures (A), (B), and (C) are plane, side, and front views showing the mounting frame for the drainer in Figure 1, and Figures 4 (A), (B, and C).
Figure 5 is a side view showing the mounted state of the frame shown in Figures 3 and 4, Figures 6 (A), (B) C) is a plane, side and front view showing the frame for mounting on the handrail, Figures 7 (A) and (B)
(C) is a plane, side, and front view of the pedestal mounted on the pedestal of FIG. 6. α: Pool 1: Underwater television camera with lighting 2: Attitude adjustment member 3: Support rod 5.6.20.22: Mounting frame 8: Telescopic drive mechanism (winch) 13.14, 10.11: Rotation drive mechanism (attitude (For adjustment parts) Sub-agents: 2 patent attorneys and non-Kaimoto important documents Figure 3 (C) Figure 4 (C)

Claims (1)

[Claims] A support rod that is extendable and retractable is installed vertically on a mounting base that projects above the water surface of the pool, and an attitude adjustment member that is rotated around a vertical axis is attached to the lower end of the support rod. An underwater television set comprising: an illuminated underwater television camera that is rotatably operated around a horizontal axis; an extension and contraction drive mechanism for the support rod; and a rotational drive mechanism for the attitude adjustment member and the underwater television camera. Device.