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HEATING DEVICE FOR IN-SERVICE WELDING OF OIL AND GAS PIPELINE FOR OIL AND GAS TRANSPORT
HEATING DEVICE FOR IN-SERVICE WELDING OF OIL AND GAS PIPELINE FOR OIL AND GAS TRANSPORT
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机译：油气输送管道在役焊接加热装置
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摘要
A heating device for in-service welding of oil and gas pipeline, which comprises a heating section, a heat dissipation section and a constant temperature section, wherein the heating section and the heat dissipation section are mounted on an oil and gas pipeline. The heating section heats the oil and gas pipeline to simultaneously heat the wall of the oil and gas pipeline and fluid in the oil and gas pipeline. A work station to be welded is heated by utilizing flowing of the fluid and heat conduction of the wall of the oil and gas pipeline. The heat dissipation section is mounted on the oil and gas pipeline. The heat dissipation section recovers the heat of the oil and gas pipeline by utilizing state change of a heat transfer medium in the heat dissipation section and also transfers the heat to the heating section through the constant temperature section
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