Local draining and friction stitch welding repairing equipment with underground steel structure and method
A friction stitch welding and steel structure technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve problems such as damage to marine pipelines, fatigue cracks in steel structures, hidden safety hazards in offshore operations and economic losses, and achieve good welding quality , high welding efficiency
Inactive Publication Date: 2011-05-11
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology
Most of my country's ocean pipelines are located in the Bohai Sea, with an average water depth of 18m. Due to various reasons such as erratic weather factors at sea and ship anchoring, the ocean pipelines will be damaged, and most of the platforms and pipelines have been in service for more than the designed service life. , one of the earliest pipelines was put into use in 1985. These over-the-year steel structures are prone to fatigue cracks and damage, which lead to failure events, causing great safety hazards and quite high economic losses to offshore operations
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[0012] like figure 1 As shown, the dry friction stitch welding method for underwater steel structure repair, its process parameters include friction spindle head rotation speed, feed speed, combination of welding hole shape and stopper rod shape, welding heating time, argon gas Protection and auxiliary heat source, etc.
[0013] The friction stitch welding repair equipment for local drainage of underwater steel structures is mainly composed of a mechanical system, a hydraulic power system, an electric control system, a data acquisition system, and a stress temperature measurement system. In the mechanical system of the friction stitch welding repair equipment, the friction spindle head and The mobile sliding table is driven by hydraulic pressure, and the sliding table and the base and the workpiece fixture are connected by bolts. The electric control system is composed of Siemens S7-200PLC and its expansion modules. The data acquisition system includes Wavebook data acquisitio...
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The invention discloses local draining and friction stitch welding repairing equipment with an underground steel structure and a method. The friction stitch welding equipment consists of a mechanical system, a hydraulic power system, an electrical control system, a data acquisition system and a stress and temperature measuring system, wherein the mechanical system comprises a base and also comprises a moving sliding table, a workpiece clamp, a cross beam and a friction main shaft head which are arranged on the base; the friction stitch welding equipment is controlled by a control console to operate, not only can be used for welding flat plates, but also can be used for welding pipelines; after being equipped with a water tank, the friction stitch welding equipment can carry out the experiment for underground welding; after being equipped with a matched drainage cover, the local draining and friction stitch welding equipment can carry out the local draining and friction stitch welding experiment; and the welding process comprises the rotating speed and the feeding speed of a friction main shaft head, the combination of the shape of a welding hole and the bar-shaped shape, the welding heating time, the argon gas protection, an auxiliary heat source and other parameters. The local draining and friction stitch welding repairing equipment is convenient to use and easy to use, maintenance and repair and has high reliability and high quality.
Description
technical field [0001] The invention relates to a friction stitch welding repair equipment, especially for flat plate welding and pipeline welding, and is mainly used for repairing local drainage friction stitch welding of underwater steel structures damaged by cracks in connected marine steel structures. Restoration equipment and methods. Background technique [0002] There are a large number of marine structures, such as offshore oil and gas pipelines, offshore platforms, etc. Most of my country's ocean pipelines are located in the Bohai Sea, with an average water depth of 18m. Due to various reasons such as erratic weather factors at sea and ship anchoring, the ocean pipelines will be damaged, and most of the platforms and pipelines have been in service for more than the designed service life. , one of the earliest pipelines was put into use in 1985. These over-the-year steel structures are prone to fatigue cracks and damage, which lead to failure events, causing great sa...
Claims
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IPC IPC(8): B23K20/12B23K20/14B23K101/24
Inventor 焦向东高辉周灿丰陈家庆占宏伟张艳清
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY