JPH041411Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a multi-blade swing valve heating and cooling mechanism that is applied to heating and shielding peripheral equipment for inspection during the service life of fast breeder reactors and the like.

[Conventional technology]

Conventional heating and cooling mechanisms cannot be installed with gate valves, etc. due to the layout and the running of the inspection machine, so we are considering using a gas curtain system to suppress the high-temperature gas blowing up from below, as shown in Figure 3. Although it was
This gas curtain method had insufficient heating and cooling effects.

[Problem that the invention attempts to solve]

By installing a mechanism with high heating and cooling effects that is almost unaffected by the layout constraints of other surrounding equipment and does not become an obstacle when the inspection machine moves in the passageway, the gas curtain system can be installed. This reduces the heat load on the equipment and prevents the inspection equipment installed above from becoming too hot.

[Means for solving problems]

A swing valve system with a multi-blade valve plate with internal insulation material was adopted to create a heating and cooling mechanism that is compact enough to accommodate layout constraints and highly effective at heating and cooling without interfering with the running of the inspection machine. A necessary path for the inspection machine to travel is formed in the center of the multi-vane valve plate so that it can be swung open and closed when necessary.

In addition, the multi-vane valve plate is held in the anti-gravity direction by a torsion spring to reduce the load when opening and closing.

[Effect]

When the shielding mechanism is closed, segment-shaped valve plates fitted with heat insulating material gather inside the casing to form a flat plate, and cross the inside of the casing to shut off the valve. Cables pass through the passage notch when the valve plate is closed. When the shielding mechanism is opened, the segment-shaped valve plate opens along the inner wall of the casing to form a cylindrical space at the position of the shielding mechanism, through which inspection equipment and the like can pass.

〔Example〕

An embodiment of the present invention is shown in FIGS. 1 and 2, and the structure and operation will be explained based thereon.

The cylindrical casing 1-1 is connected to guide cylinders 1-2, 1-3 for inspection machines, etc., which are partially shown, and a heat insulating material 15-3 is laid around the outer periphery to form a boundary for a passage for inspection machines, etc. There is. A cylindrical valve seat 2 inside a heat insulating material 15-2 is attached to one end of the casing 1-1, and rotatably supports a plurality of fan-shaped vane valve plates 3.

A heat insulating material 15-1 is installed inside the valve plate 3, a hinge 6 fixed to the shaft 4 is attached to the outer circumferential part, a torsion spring 7 held by the shaft 4 is attached, and the central part is attached to the hinge 6 fixed to the shaft 4. A required number of cutouts 3a are provided for passage of cables, wires, chains, etc. of an inspection machine (not shown). The plurality of shafts 4 fixed to the hinge 6 of the valve plate 3 are connected to the valve seat 2.
It is rotatably supported on the support part 2b of the
(or worm wheel 8).

The torsion spring 7 is held by the shaft 4, and is attached to the valve plate 3 on one side and the support portion 2c of the valve seat 2 on the other side, and is set to act in the anti-gravitational direction of the valve plate 3.

The worm wheel 8 is rotatably supported by the support portion 2a of the valve seat 2, and both ends thereof are connected to the universal joint 5-1.
is connected to the adjacent shaft 4. The worm wheel 8 is also engaged with a worm 9 rotatably supported by a bearing unit 10 attached to the casing 1-1.

The other end of the worm 9 is connected via a universal joint 11 to a shaft/bearing unit 12 connected to a drive device 13. The universal joint 11 and the shaft/bearing unit 12 are connected to be slidable in the axial direction so that differences in thermal expansion can be absorbed. Drive device 13
The shaft/bearing unit 12 is mounted on a frame 14, which is partially illustrated.
installed on.

When a main body such as an inspection machine (not shown) passes, the drive device 13 is operated from the state shown in FIG.
Through the bearing unit 12, the universal joint 11, the worm 9 and the worm wheel 8, the universal joint 5-1,
The rotation is transmitted to the shaft 4, the universal joint 5-2, the shaft 4, etc., and the valve plate 3 is fully opened. After the main body of the inspection machine, etc. has passed, it is returned to the state shown in Figure 1 by performing the reverse operation, so that only the cables, wires, chains, etc. of the inspection machine, etc. can pass through. When pulling back the main body of the inspection machine, etc., perform the above procedure in reverse.

[Effect of idea]

The multi-vane valve plate is fully opened only when the main body of the inspection machine, etc. passes, and is closed at other times, leaving a notch for the passage of small diameter members such as cables, wires, chains, etc. , the amount of high-temperature gas blowing up from below can be reduced, the heat load on the gas curtain device can be greatly reduced, and the heating effect can be enhanced.

In addition, since the load on the driving device is reduced by the multi-blade valve plate swing method and torsion spring, the entire device becomes compact and is hardly subject to any restrictions on placement.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of an embodiment of the multi-blade swing valve heat shielding device of the present invention, Fig. 2 is a plan view of Fig. 1, the upper half is a cross-sectional view taken along line A-A in Fig. 1, and the lower half is It is a BB sectional view of FIG. 1. FIG. 3 is an overall configuration diagram of conventional equipment. 1...Casing, 2...Valve seat, 3...Valve plate,
3a... Cable passage notch, 4... Shaft, 5
... Universal joint, 6 ... Hinge, 7 ... Torsion spring, 8 ... Worm wheel, 9 ... Worm, 10 ... Bearing unit, 13 ... Drive device,
15...Insulation material.

Claims (1)

[Scope of utility model registration request] In a shutoff device installed in a cylindrical passage communicating with a high-temperature atmosphere, the outer periphery of a fan-shaped valve plate that is divided radially into a plurality of parts to form a disc-shaped valve plate as a whole and that has a heat insulating material inside is connected to the inner wall of the cylindrical passage. The fan-shaped valve plate is pivoted at the same time by a drive mechanism to open and close the cylindrical passage, and the fan-shaped valve plate is provided with a cutout for passage of cables so that the cables can be opened and closed when the valve plate is closed. A multi-blade swing valve type heating and cooling device characterized in that the notch can be penetrated.