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Large pressure vessel outer integral post-welding heat treatment system

A pressure vessel and post-heat treatment technology, which is applied to heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of large volume, long length, and large diameter of large pressure vessels, so as to ensure uniformity, eliminate residual stress, and improve service life. The effect of longevity

Pending Publication Date: 2018-12-18
江苏力沃新能源科技股份有限公司
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Problems solved by technology

Due to the large diameter, length and volume of welded large pressure vessels, traditional heat treatment methods cannot perform overall heat treatment on such large vessels

Method used

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  • Large pressure vessel outer integral post-welding heat treatment system
  • Large pressure vessel outer integral post-welding heat treatment system
  • Large pressure vessel outer integral post-welding heat treatment system

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Embodiment Construction

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] Such as Figure 1 ~ Figure 3 As shown, an integral post-weld heat treatment system for a large pressure vessel in this embodiment includes a heat treatment weldment 7, and three sets of heat supply systems are arranged outside the heat treatment weldment 7, and each set of heat supply systems includes sequentially connected The temperature-regulating fan 1, the hot blast stove 2 and the distribution air box 3, the distribution air box 3 of the three sets of heating systems are respectively provided with the first temperature control air duct 4, the second temperature control air duct 5 and the third temperature control air duct 6 , the opening side of the heat treatment weldment 7 is provided with a return air cavity 9, and the first temperature control air duct 4, the second temperature control air duct 5 and the third temperature cont...

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Abstract

The invention relates to a large pressure vessel outer integral post-welding heat treatment system. The large pressure vessel outer integral post-welding heat treatment system comprises a heat treatment weldment, the heat treatment weldment is externally provided with three sets of heat supply systems, and each set of the heat supply systems comprises a temperature-regulating fan, a hot-blast stove and a distributing wind box which are connected in sequence. The distributing wind boxes of the three sets of heat supply systems are separately provided with first temperature control air ducts, second temperature control air ducts and third temperature control air ducts. A return air cavity is formed in the open side of the heat treatment weldment, and the first temperature control air ducts,the second temperature control air ducts and the third temperature control air ducts separately penetrate through the return air cavity to extend into the heat treatment weldment. The large pressure vessel outer integral post-welding heat treatment system can perform integral heat treatment for large pressure vessels, through the three sets of heat supply systems, the heat treatment weldment is subjected to district heating, and the temperature is controlled jointly, the uniformity of the heat treatment temperature is effectively ensured, the residual stress of welding seams is eliminated, andthe service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to an integral post-weld heat treatment system outside a large pressure vessel, belonging to the technical field of post-weld heat treatment of pressure vessels. Background technique [0002] Post-weld heat treatment of pressure vessels is the key process in the final stage of pressure vessel manufacturing and installation. The quality of post-weld heat treatment directly affects the overall internal quality of the pressure vessel. Unlike weld defects, post-weld heat treatment cannot be reworked, and heat treatment takes a long time and costs a lot. The effect of post-weld heat treatment is guaranteed by the post-weld heat treatment process. Therefore, the faithful execution of post-weld heat treatment process is the key to ensure the effect of post-weld heat treatment. The uniformity of heat treatment temperature, the rationality of holding time, and the accuracy of temperature measurement are all key. For large pressure vessel...

Claims

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Application Information

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IPC IPC(8): C21D1/34C21D9/50
CPCC21D1/34C21D9/50
Inventor 谢国良
Owner 江苏力沃新能源科技股份有限公司
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