Apparatus for correcting deformation of reaction vessel and method for correcting deformation therefor

Patent metadata

Field	Value
Publication number	US-9463499-B2
Application number	US-201414162790-A
Country	US
Kind code	B2
Filing date	Jan 24, 2014
Priority date	Jan 25, 2013
Publication date	Oct 11, 2016
Grant date	Oct 11, 2016

Abstract

For aging deformation of a reaction vessel used for production of titanium sponge by the Kroll method, the deformation of the reaction vessel can be corrected to a desired deformation. The apparatus for correcting the deformation corrects by being inserted inside of the cylindrical deformation of the reaction vessel, the apparatus has multiple cylinder arms radially extendable to a circumference, a deformation-correcting head arranged on a top part of the cylinder arm, a hydraulic power unit connected to the cylinder arm and driving the deformation-correcting head, a detecting means for the stroke of the deformation-correcting head, and a measuring means for the pressing force against the reaction vessel. Furthermore, the method for correcting the deformation of the reaction vessel using the apparatus has a step of pressing the reaction vessel while adjusting stroke of the deformation-correcting head depending on an amount of deformation of the reaction vessel.

First claim

What is claimed is:

1. A method for correcting deformation of a cylindrical reaction vessel to correct deformation of the cylindrical reaction vessel by inserting an apparatus for correcting the deformation inside of the cylindrical reaction vessel, the apparatus for correcting the deformation, comprising:
multiple cylinder arms radially extendable to a circumference,
a plurality of deformation-correcting heads, each of the plurality of deformation-correcting heads being arranged on an outer end of each of the cylinder arms,
a hydraulic power unit connected to the cylinder arms and driving the deformation-correcting heads,
a stroke detector for detecting a stroke of the deformation-correcting heads,
an elevating device for supporting the cylinder arms and the deformation-correcting heads inside of the cylindrical reaction vessel, and
a damper connecting the elevating device with the cylinder arms and the deformation-correcting heads to absorb shock when the cylinder arms and the deformation-correcting heads oscillate upward and downward during a deformation-correcting operation,
the method for correcting the deformation comprising:
a step of inserting the apparatus for correcting the deformation into the cylindrical reaction vessel in a vertical direction by operating the elevating device, and
a step of pressing the reaction vessel while adjusting a stroke of the deformation-correcting heads based on an amount of deformation of the cylindrical reaction vessel,
wherein the apparatus for correcting deformation further comprises a sensor measuring an amount of deformation in a radial direction of an inner surface of the cylindrical reaction vessel,
a measured value measured by the sensor is transmitted to a computer arranged in a control room by a communication, and
the measured value is recorded in a recording device arranged in the computer.

2. The method for correcting the deformation of a cylindrical reaction vessel according to claim 1 ,
wherein an amount to be deformation-corrected of an entirety of the reaction vessel is calculated by the computer based on information of deformation of the cylindrical reaction vessel recorded in the recording device, and
the entirety of the reaction vessel is deformation-corrected based on the amount to be deformation corrected.

3. A method for correcting the deformation of the cylindrical reaction vessel by inserting an apparatus for correcting the deformation inside of the cylindrical reaction vessel, the apparatus for correcting the deformation, comprising:
multiple cylinder arms radially extendable to a circumference,
a plurality of deformation-correcting heads, each of the plurality of deformation-correcting heads being arranged on an outer end of each of the cylinder arms,
a hydraulic power unit connected to the cylinder arms and driving the deformation-correcting heads,
a stroke detector for detecting a stroke of the deformation-correcting heads,
an elevating device for supporting the cylinder arms and the deformation-correcting heads inside of the cylindrical reaction vessel, and
a damper connecting the elevating device with the cylinder arms and the deformation-correcting heads to absorb shock when the cylinder arms and the deformation-correcting heads oscillate upward and downward during a deformation-correcting operation
the method for correcting the deformation comprising:
a step of inserting the apparatus for correcting the deformation into the cylindrical reaction vessel in a vertical direction by operating the elevating device, and
a step of pressing the reaction vessel while adjusting a stroke of the deformation-correcting heads based on an amount of deformation of the cylindrical reaction vessel,
wherein an amount of extending of the cylinder arms is adjusted so that stress applied on the cylinder arms does not exceed a maximal deformation load of the cylindrical reaction vessel,
wherein the apparatus for correcting deformation further comprises a sensor measuring an amount of deformation in a radial direction of the inner surface of the reaction vessel,
a measured value measured by the sensor is transmitted to a computer arranged in a control room by a communication, and
the measured value is recorded in a recording device arranged in the computer.

Assignees

• Toho Titanium Co Ltd

Inventors

• Nakashima Satoru
• Tomita Tarou
• Sakagami Atsushi

Classifications

• B21D3/14 Primary

  Recontouring · CPC title

• B21D31/04

  Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal (B21D47/00 takes precedence; enlarging tube ends B21D41/02) · CPC title

• B21D41/02

  Enlarging · CPC title