CS243933B1 - Device for moving the body for inspection and repair of the reactor pressure vessel - Google Patents

Abstract

The solution concerns a device for moving a body for inspections and repairs of a reactor pressure vessel, which can achieve sliding and rotational movement of this body. The essence of the solution is that it consists of a moving screw and a toothed nut, which is rotatably mounted on two axial bearings, between which there is a segment, the nose of which fits into the groove in the moving screw and this segment can be fixed with respect to the base plate by an electromagnetic clutch. This achieves a reduction of the lifting and rotating mechanism into a single unit. The solution can be used where it is necessary to achieve sliding and rotational movement with one device.

Description

243933

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for moving the body for inspecting and repairing a reactor pressurized vessel to provide displaceable and rotational movement of the body.

For periodic inspections and possible repairs of the reactor pressure vessel, it uses a crane to move the body for inspection and repair. As a result of the inaccurate Choc Mechanism of the cranes, frames occur, the body is deflected from the vertical position, the body setting is difficult, and the error coordinates. Crane cannot be used other. work. Devices have been developed to allow both vertical and rotary movement of the telescope for the control and repair of the reactor pressure vessel without the use of a crane. No. 211853, there are mechanisms for rotating and sliding on a platform supported by the reactor.

The circular platform is rotated by a moving mechanism. Electric motors gearboxes are synchronized on the circular surface to ensure vertical movement.

The drawbacks of these solutions are eliminated by the device for moving the control container in the pressure vessel of the reactor according to the invention, which consists in that it consists of a movement screw and a nut with an o-tooth which is rotatably mounted on two axial bearings, between them is seg- ment, whose nose fits into the groove in the movable bolt, and this segment can be fixed by the electromagnetic clutch to the foundation plate. In this way, the training of lifting and rotary mechanics into one unit is achieved. The advantage of the present solution is that the reduction of the lifting and rotating mechanism into one unit significantly reduces the number of moving parts, eliminates the complicated production of large-size gear and bearings, and the whole device can be manufactured from commonly available parts.

The supporting structure for the device can be chosen optimally, which does not have the design of the device in a predetermined shape. Drive synchronization is not required. The drive of the whole device is reduced to one shaft, the desired effect can be achieved by a single motor with speed control, or by two motors for lifting and rotating.

FIG. 1 shows a sectional view of the overall assembly of the device, FIG. 2 shows a section through the A-A movement screw, FIG. 3 shows a view of the segment with the nose, FIG. on the electromagnetic clutch.

The device consists of a movement screw 1 with a nut 2 with a toothing forming a stator 3 of a worm gear. The toothed nut 2 is housed in the upper bearing 4 and the upper axial bearing 8. In the bearing 5, the upper axial bearing 8 and the lower axial bearing 9 there is a segment 8 whose nose fits into the groove in the movement screw 1 and which is part of the electromagnetic coupling 7. This can be moved in the axial channel in a hexagonal selected foundation dock 10. The components of the device are housed in the gearbox housing 11.

The body for inspection and repair of the reactor pressure vessel is hinged on the moving screw 1 and exerts a force Q. The drive of the device is carried out by screw screws formed by screw 3 and nut 2 with toothing. By rotating the toothed nut 2, the load Q, which is suspended on the movement screw 1, also performs a rotational movement, since the friction of the moving screw 1 and the tooth 2 is greater than the friction in the upper housing 4, in the bearing 5 and in the lower axial bearing 9.

The upper axial bearing 8, together with the gear 2 with the toothing, segment 6, forms a moving screw 1 and a load Q, hinged by a moving screw 1, a rotating screw. When the electromagnetic coupling 7 is switched on, the rotational movement of the movement screw 1 with respect to the base plate 10 is prevented and the toothed nut 2 rotates on the axial bearing 8. The movement screw 1, together with the load Q, is raised and flashed. In this case, the shape of the electro-magnetic coupling 7 prevents it from rotating with respect to the base plate 10 and at the same time permits axial movement of the electromagnetic coupling 7 in a corresponding recess in the base plate 10. The bearing 5 extends radially segment 6.

The upper bearing 4, in addition to the radial guide of the toothed nut 2, captures the axial force F arising from the suspension of the device with the body for checking and repairing the reactor pressure vessel for the crane.

The invention can be used in general sterling where it is necessary to achieve a rotary movement by one device.

Claims (2)

ARTICLE 243933 ARTICLE A device for moving the body for the repair of a reactor vessel of a pressure vessel consisting of a motion screw and a gear nut, characterized in that the gear nut (2) is rotatably mounted on an upper axial bearing (8) and an axial bearing. a recess bearing (9) and between these bearings (8, 9) is a segment (6) that engages the groove in the motion screw (1j, wherein the segment (6) is part of the electromagnetic coupling (7). 2 sheets of drawings