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Underwater welding globular transfer real-time monitoring device and method

A droplet transfer and real-time monitoring technology, applied in auxiliary devices, welding equipment, welding equipment, etc., can solve the problems of unable to clearly image, unable to separate droplets and bubbles, etc., and achieve good observation, convenient operation and wide applicability. Effect

Active Publication Date: 2014-08-27
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is a mature technology and widely used in the traditional arc welding droplet transfer monitoring process, but this method cannot be realized in the underwater welding droplet transfer monitoring process. The main problem is that: due to the A large number of air bubbles and the disturbance of water around the welding area will cause great refraction and reflection to the optical path of the imaging system of this method, which cannot be clearly imaged; at the same time, due to the large number of air bubbles near the molten droplet, this method cannot distinguish the molten droplet from the air bubbles. effectively separate
At present, there is no report on the real-time monitoring technology of molten droplet transfer in underwater welding at home and abroad.

Method used

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  • Underwater welding globular transfer real-time monitoring device and method

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Embodiment 1

[0035] Embodiment 1: as figure 1 The shown x-ray receiver 10 is a flat panel detector. A real-time monitoring device for underwater welding droplet transition, which is mainly composed of a lead chamber 1, an X-ray source 2, a welding mechanism 3, a welding electrical signal acquisition unit 5, a remote control mechanism 9, and a flat panel detector. The X-ray source 2 and the flat-panel detector are respectively placed at both ends of the welding workpiece 6 to ensure that the center position of the emission end of the X-ray source 2 and the center position of the input end of the flat-panel detector remain on the same horizontal line, forming an angle of 180°. Adjust the position of the welding torch 4 in the welding mechanism 3 to ensure that the end of the welding torch 4 is within the observation field of view, so as to ensure that the arc region 8 and the welding droplet 7 are within the observation field of view during the welding process. Before the welding operation ...

Embodiment 2

[0036] Embodiment 2: as figure 2 The shown x-ray receiver 10 is an image intensifier. The underwater welding droplet transition real-time monitoring device is mainly composed of a lead chamber 1, an X-ray source 2, a welding mechanism 3, a welding electrical signal acquisition unit 5, a remote control mechanism 9, a high-speed camera 11 and an image intensifier. The high-speed video camera 11 adopts an electric three-variable lens. The X-ray source 2 and the image receiver are respectively placed at both ends of the welding workpiece 6 to ensure that the center position of the emission end of the X-ray source 2 and the center position of the input end of the image receiver remain on the same horizontal line, forming an angle of 180°. Adjust the position of the welding torch 4 in the welding mechanism 3 to ensure that the end of the welding torch 4 is within the observation field of view, so as to ensure that the arc region 8 and the welding droplet 7 are within the observati...

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Abstract

The invention relates to an underwater welding globular transfer real-time monitoring device and method. The device comprises an X-ray source, an X-ray image receiver, a welding electric signal collecting unit and a remote control mechanism. The X-ray source emits an X-ray which penetrates through an electric arc area above a welding workpiece, a globular transfer X-ray image is formed and is projected to the X-ray image receiver, and the X-ray image receiver converts the globular transfer X-ray image into a visual image which is sent to a computer in the remote control mechanism. The welding electric signal collecting unit synchronously collects welding voltage and welding current in the welding process. Collected image signals and welding electric signals are transmitted to the computer in the remote control mechanism in real time, and the welding globular transfer process is monitored in real time through the computer. The underwater welding globular transfer real-time monitoring device and method have the advantages of being slightly affected by the welding environment, and being high in applicability, high in image quality, capable of conducting microarea observation, high in image collection frequency, capable of achieving remote control and convenient to operate, and the like.

Description

technical field [0001] The invention belongs to the field of welding process monitoring, and in particular relates to a real-time monitoring device and method for underwater welding droplet transition. Background technique [0002] In recent years, the ocean has become the main field of competition for countries all over the world. The development of large oil and gas fields and coalbed methane, the construction of underwater workstations, the deployment and maintenance technology of submarine observation networks, the maintenance, disassembly and safety guarantee of offshore platforms all cover underwater welding. technology. Due to the particularity of the underwater welding technology, the metallurgical process, mass transfer and heat transfer process and the traditional welding method have undergone great changes. The interaction mechanism of the droplet transfer process, arc shape, welding process and underwater environment The research level of welding metallurgy mech...

Claims

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Application Information

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IPC IPC(8): B23K37/00
CPCB23K9/0061B23K9/0953B23K9/0956
Inventor 郭宁冯吉才王美荣郭伟
Owner HARBIN INST OF TECH AT WEIHAI
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