Welding joint conveying device on inner surface of piping

Abstract

The invention provides a welding joint conveying device on the inner surface of a piping. The length of a fixing part can be adjusted according to the size of the piping, and the device does not need to be remanufactured according to the size of the piping, so the cost can be lowered; and the device is not related with a manufacturing factory of welding joints, so the installation becomes easy, and the using range can be greatly enlarged. The device comprises a linkage chuck used as a main body, a fixing part for fixing the main body inside the piping, a rotary drive motor for generating power required by welding the piping along the circumferential direction, a rotary drive part for transferring the power of the rotary drive motor to a rotary cover, the rotary cover rotating along the circumferential direction of the piping, a rotary part mounting rod connected with the rotary cover, a back-and-forth conveying motor for generating power required by welding the piping along the lengthdirection, a drive part for transferring the power of the back-and-forth conveying motor to the length direction of a welding joint part, the welding joint part moving along the length direction of the piping, a motor controller, a wireless camera, a wireless receiving part, a camera controller, and a display part.

Description

technical field [0001] The present invention relates to a welding head conveying device for the inner surface of a pipe, and relates to a pipe interior capable of performing internal welding of the main pipe, that is, the connection part of the cooling material pipe of the atomic furnace, during the replacement construction of the steam generator in a nuclear power plant. Surface welding head conveyor. Background technique [0002] In general, the steam generator of a nuclear power plant is one of the most important core machines for generating steam required for electric power production by a steam turbine and a generator, and it is a device that functions as follows: The high-temperature, high-pressure primary cooling water (PRIMARY COOLANT) generated by the atomic furnace flows through the inner surface of the tube, heats the cold feed water (FEED WATER) outside the tube to generate steam, and then supplies the steam to the turbine. [0003] When carrying out the replac...

AI Technical Summary

Problems solved by technology

[0003] When carrying out the replacement construction of the above-mentioned steam generator, since the welding is carried out after the operation of the above-mentioned steam generator, the working time is limited in the above-mentioned working environment where the surrounding is radioactively contaminated, and in this kind of work People who work in the environment must wear bulky and heavy protective gear, so the movement, sight and work ability are greatly restricted. Therefore, a welding conveyor for performing operations such as the above is actually being developed recently.

[0004] The conventional track-type welding head conveying device is a way to move the above-mentioned welding head along the track, so when the above-mentioned welding head or the above-mentioned track is changed to other styles, they cannot be combined with each other. Requirements for remodeling, or unusable issues

[0005] In addition, the conventional welding device is a device that uses a circular track on the inner surface to transport the welding head and perform welding. It does not have the function of transporting the above-mentioned welding head along the length direction of the pipe, but it is correctly positioned along the welding line when the track is installed. After installation, the above welding head can be welded along the welding line

[0006] Therefore, it is troublesome to install the rails correctly, and when the slipping phenomenon during transportation occurs due to the friction between the rails and the welding head, it cannot be adjusted, and there is a problem of poor welding.

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