Sealing and drying device of photoelectric mechanism

Abstract

The invention discloses a sealing and drying device of a photoelectric mechanism. The device comprises a container, an outer bush, an inner bush, a cover body and a transparent observing plate; one end of the container is open; the outer bush is arranged in an opening of the container and is in sealed connection with the container, and the outer bush comprises a first end and a second end, whereinthe first end is provided with a first through hole communicated with the interior of the container and the interior of the outer bush, and the second end is provided with a second through hole; theinner bush is located in the outer bush from the second through hole and is movably connected with the outer bush in a sealed mode, a drying agent is contained in the inner bush, and through holes making the interior of the outer bush communicate with the interior of the inner bush are arranged in the inner bush; the transparent observing plate is arranged on the cover body, and the cover body isconnected to the inner bush in a sealed mode; and the inner bush can move close to or away from the first through hole so as to close or open the first through hole. According to the device, the stateof the drying agent is convenient to observe, and the interior of the container can be isolated through the inner bush, and nitrogen leakage or internal pollution in the container cannot be caused when the drying agent is replaced.

Description

technical field [0001] The invention relates to the technical field of photoelectric measurement and control, in particular to a sealing and drying device of a photoelectric mechanism. Background technique [0002] In the photoelectric mechanism (that is, the photomechanical system), in order to protect the photomechanical system from environmental erosion, it is often placed in a sealed structure, especially the infrared optical system used or installed at sea or near the sea, in order to prevent moisture, salt spray For the erosion of infrared lens and mechanical structure, the infrared optical system is usually placed in a nitrogen sealed container with a pressure of 1.1 atmospheres, and a drier containing a desiccant is placed inside the sealed container. This method cannot know whether the desiccant is invalid. You can only periodically open the container cover to check or replace the desiccant, so that the optical lens and mechanical structure are fully exposed to the ...

AI Technical Summary

Problems solved by technology

[0002] In the photoelectric mechanism (that is, the photomechanical system), in order to protect the photomechanical system from environmental erosion, it is often placed in a sealed structure, especially the infrared optical system used or installed at sea or near the sea, in order to prevent moisture, salt spray For the erosion of infrared lens and mechanical structure, the infrared optical system is usually placed in a nitrogen sealed container with a pressure of 1.1 atmospheres, and a drier containing a desiccant is placed inside the sealed container. This method cannot know whether the desiccant is invalid. You can only periodically open the container cover to check or replace the desiccant, so that the optical lens and mechanical structure are fully exposed to the humid air by the sea, which will damage the optical-mechanical structure. In addition, nitrogen will also leak after opening the container cover. Generally, in the use environment of photoelectric mechanisms There is no supplementary nitrogen device in the system, and it is necessary to provide a special supplementary nitrogen device or transfer the container to a site specially equipped with a supplementary nitrogen device for supplementary nitrogen, which increases the cost

The above-mentioned shortcomings are not only inconvenient to observe the state of the desiccant, but also easily cause erosion when replacing the optical-mechanical system, and the replacement cost remains high

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