Spraying and quenching device for steel pipe, petroleum well pipe and drill pipe medium frequency heat treatment system

Abstract

This invention provides a kind of spray quenching equipment in the frequency treatment system of steel pipe, tube and drill pipe of oil well. The sprinkler is a circle distribution and the inlet pipe is connected with the pump. The spray quenching angle switch equipment is installed onto the sprinkler. Several muzzles are fixed to the sprinkler, which are distributed in taper or sector shape. All of the muzzles are symmetric set, the diameter of which is from 1.2mm to 4mm. The center line of the spray quenching equipment is coinciding with that of the steel pipe , tube and drill pipe. The advantages are: the continuum spray quenching process with product line can make the work pieces quenched properly. The average flatness of a 10-meters long work piece can come up to the US standard API, which is 0.2% of the total length from one end to the other. It couldn' t exceed 3.175 mm within 1524mm long. The spray pressure is controllable, the equipment can cool down quickly and the jam can be removed quickly. The angle of the muzzle is adjustable, which can reduce the backwater when the work pieces pass the spray quenching area.

Description

technical field [0001] The invention relates to a spray quenching device used in intermediate frequency heat treatment systems for steel pipes, petroleum oil well pipes and drill pipes, and belongs to the technical field of heat treatment. Background technique [0002] The prior art adopts a general spraying device. Because of its structure, steel pipes, petroleum oil well pipes and drill pipes cannot be quenched rapidly and evenly in the continuous spraying along the line due to its structure. Oil well pipes and drill pipes have a large amount of bending deformation, and the straightness reaches the American API standard, which is 0.2% of the total length measured from one end of the pipe to the other end. Within 1524mm of each end, not to exceed 3.175mm. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, and propose a spray quenching device that is more suitable for intermediate frequency heat treatment s...

AI Technical Summary

Problems solved by technology

[0002] The prior art adopts a general spraying device. Because of its structure, steel pipes, petroleum oil well pipes and drill pipes cannot be quenched rapidly and evenly in the continuous spraying along the line due to its structure. Oil well pipes and drill pipes have a large amount of bending deformation, and the straightness reaches the American API standard, 0.2% of the total length measured from one end of the pipe to the other end

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