High-temperature high-pressure steam valve sealing face on-site online heat treatment system

Abstract

The invention discloses a high-temperature high-pressure steam valve sealing face on-site online heat treatment system which comprises a medium-frequency induction inner heating power source, a medium-frequency induction outer heating power source, a first water cooling heating power source, a second water cooling heating power source, an air cooling cable and an induction coil. A heat treatment lifting device comprises a stepping motor, a sliding table, an L-shaped coil fixing flange disc, a valve cover end face, a sliding table positioning block and a device fixing threaded hole. The induction coil comprises high silica cloth, a disc-shaped coil, a mica plate and a mica plate fixing bolt. The medium-frequency induction inner heating power source is located on the right side of the first water cooling heating power source, and the medium-frequency induction outer heating power source is located below the medium-frequency induction inner heating power source. By means of the high-temperature high-pressure steam valve sealing face on-site online heat treatment system, it is guaranteed that the heat treatment technological requirements can be met in the welding or repairing process according to structure and environmental complexity of an on-site high-temperature high-pressure steam valve sealing face, light weight and miniaturization are achieved, on-site installation and operation are performed conveniently, and the sealing face crack tendency caused by excessively large valve body wall thickness is avoided.

Description

technical field [0001] The invention relates to a heat treatment system, in particular to an on-site heat treatment system for the sealing surface of a high-temperature and high-pressure steam valve. Background technique [0002] At present, when the sealing surface of high-temperature and high-pressure steam valves needs to be welded and repaired, the heat treatment methods of heat conduction on the outer wall or cutting the workpiece into a heating furnace are mainly adopted. However, these methods are not only time-consuming and labor-intensive, but also cannot meet the technical requirements of heat treatment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an on-site heat treatment system for the sealing surface of high-temperature and high-pressure steam valves, which can ensure that the heat treatment process requirements are met during the welding or repair process according to the complexity of the struct...

AI Technical Summary

Problems solved by technology

[0002] At present, when the sealing surface of high-temperature and high-pressure steam valves needs to be welded and repaired, the heat treatment methods of heat conduction on the outer wall or cutting the workpiece into a heating furnace are mainly adopted. However, these methods are not only time-consuming and laborious, but also the process requirements of heat treatment cannot be met.

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