Omnibearing observation device for interior of hot chamber

Abstract

The invention relates to the technical field of nuclear fuel aftertreatment and hot chamber observation in the nuclear industry, in particular to a hot chamber interior all-dimensional observation device which comprises a radiation-resistant flexible mechanism, a corrugated pipe replacement mechanism, a lead box door opening and closing mechanism and a lead box. A camera is controlled to turn by stretching and retracting of a left cylinder and a right cylinder of an angle control mechanism of a radiation-resistant flexible mechanism, a lead box door opening and closing mechanism capable of being opened and closed is arranged on the front end face of the lead box, and the outer side face of the front end of the lead box is connected with a corrugated pipe replacing mechanism. A plurality of corrugated pipe replacement parts which are vertically arranged and are used for protecting the camera from irradiation are arranged in the corrugated pipe replacement mechanism; according to the invention, the camera can observe the interior of the hot chamber in all directions to obtain high-quality images of all areas of the hot chamber, the lead box door opening and closing mechanism can protect the camera from being polluted by radiation environment in the hot chamber, and the service life of the camera is prolonged.

Description

technical field [0001] The invention relates to the technical field of nuclear fuel reprocessing and hot chamber observation in the nuclear industry, in particular to a device for omnidirectional observation inside a hot chamber. Background technique [0002] Due to the high radioactivity of spent fuel assemblies or components contaminated with radioactive substances produced in nuclear facilities, after storage and transportation to reprocessing facilities, corresponding physical and chemical operations need to be carried out in thermal chambers to achieve volume reduction and resource recovery purposes , the hot cell is a place with shielding, sealing, ventilation and isolation in nuclear reprocessing facilities, which is used to observe, contain, shield and perform corresponding process operations on high-radioactive substances to prevent radioactive substances from leaking into the environment and causing pollution , to ensure that the operator will not be exposed to rad...

AI Technical Summary

Problems solved by technology

[0005] First, the power manipulator is used to move the camera and to pick up, transport, and cut radioactive materials. When moving the camera, it will occupy the limited resources of the power manipulator. The power manipulator and the camera are two independent devices, which are prone to circuit breakers when moving. Winding, resulting in damage to the line and other faults;

[0006] Second, when the camera is working, the power manipulator takes it out of the lead box and puts it into the thick-walled cavity of the hot chamber. The surface of the camera will be contaminated with radioactive substances. Putting it in a lead box will cause radiation damage to the camera, and the service life of the camera will be shortened by radiation;

[0007] Third, there is a cavity in the thick wall of the heat chamber, which is used to place the camera. There is a dome cover outside the cavity, and the moving camera can adjust the lens zoom through the dome cover. Due to the limitation of the cavity space, the camera can only move forward and backward in the channel. Translation, cannot rotate the angle, resulting in limited observation range, there is a gap in the assembly of the cavity and the dome, a small amount of radioactive material flows out through the cavity to the hot outside through the gap, not only irradiating the camera, but also causing radiation damage to external workers or instruments ;

[0008] Fourth, the thick observation window is integrated on the wall of the hot chamber for direct visual observation of objects or phenomena in the hot chamber. Due to the thick wall of the hot chamber, there are dead spots in the observation, and some areas cannot be observed, so direct visual observation cannot Precise measurement of distances and spatial dimensions inside the hot cell, which does not allow to obtain high-quality images of all areas of the hot cell

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