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Crystallizer taper on-line maintenance and hydraulic control system

A technology of hydraulic control system and crystallizer, which is applied in the safety of fluid pressure actuating system, components of fluid pressure actuating system, fluid pressure actuating device, etc., can solve the problems of complex structure of driving device, leakage of molten steel, and large space occupation. , to achieve the effect of online thermal width adjustment control

Active Publication Date: 2016-07-13
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the mold taper maintenance equipment in the field of continuous steel casting at home and abroad usually uses a servo motor to drive a ball screw push rod to control the narrow side of the mold. Due to the complex structure of the drive device composed of the servo motor and the ball screw, it takes up a lot of space. In addition, too many transmission links lead to excessive gaps. During the long-term molten steel casting process, the taper of the crystallizer changes due to the bulging force of the billet during the long-term molten steel casting process, resulting in safety production accidents such as billet quality problems and molten steel leakage.

Method used

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  • Crystallizer taper on-line maintenance and hydraulic control system

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Effect test

Embodiment 1

[0020] This embodiment provides a hydraulic control system for mold taper on-line maintenance, including an electromagnetic reversing valve 4, a high-response valve 5, and a hydraulic cylinder 10. The pressure oil port P of the electromagnetic reversing valve 4 and the main pressure pipeline PO is connected, the main oil port B of the electromagnetic reversing valve 4 is connected with the pressure oil port P of the high-response valve 5, and the main oil port A of the high-response valve 5 is connected with the piston chamber of the hydraulic cylinder 10, and the high-frequency response The main oil port B of the valve 5 is connected with the piston rod cavity of the hydraulic cylinder 10, and the oil return port T of the high-response valve 5 is connected with the main oil return line TO;

[0021] A displacement sensor 11 is installed on the hydraulic cylinder 10, and the displacement sensor 11 is connected to the electrical control cabinet 12 through a cable. connect.

[0...

Embodiment 2

[0027] On the basis of Embodiment 1, this embodiment provides a mold taper online maintenance hydraulic control system, and a first one-way Valve 201, the main oil port A of the first one-way valve 201 is respectively connected with the oil return port T of the electromagnetic reversing valve 4 and the oil return port T of the high-response valve 5, and the main oil port B of the first one-way valve 201 is connected with The main oil return pipeline TO is connected.

[0028] The first one-way valve 201 is used to prevent the oil in the main oil return line TO from entering the control system, causing the position of the hydraulic cylinder 10 to change. At the same time, the opening pressure of 2 bar can improve the operating performance of the high-response valve 5 for control.

Embodiment 3

[0030] On the basis of Embodiment 2, this embodiment provides a hydraulic control system for maintaining the taper of the crystallizer on-line. control check valve 601, the control oil port X of the first hydraulic control check valve 601 is connected to the main oil port B of the electromagnetic reversing valve 4, and the drain port Y of the first hydraulic control check valve 601 is connected to the first single Connect to main oil port A of valve 201;

[0031] A second hydraulically controlled check valve 602 is provided between the main oil port B of the high-response valve 5 and the piston rod chamber of the hydraulic cylinder 10, and the control oil port X of the second hydraulically controlled check valve 602 is connected to the solenoid switch. The main oil port B of the valve 4 is connected, and the drain port Y of the second hydraulic control check valve 602 is connected with the main oil port A of the first check valve 201 .

[0032] In this embodiment, the first h...

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Abstract

The invention provides a crystallizer taper on-line maintenance and hydraulic control system which comprises an electromagnetic reversing valve, a high-frequency response valve and a hydraulic cylinder, wherein a pressure oil hole P of the electromagnetic reversing valve is communicated with a main pressure pipeline; a main oil hole B of the electromagnetic reversing valve is communicated with the pressure oil hole P of the high-frequency response valve; a main oil hole A of the high-frequency response valve is connected with a piston cavity of the hydraulic cylinder; the main oil hole B of the high-frequency response valve is connected with a piston rod cavity of the hydraulic cylinder; an oil return hole T of the high-frequency response valve is communicated with a main oil return pipeline. By adopting the crystallizer taper on-line maintenance and hydraulic control system, crystallizer taper on-line position maintenance control required by provided taper signals can be precisely, reliably and automatically achieved accruing to a crystallizer taper set by a process; moreover when a crystallizer needs on-line width adjustment, on-line width adjustment and control can be achieved through the control system; meanwhile continuous long-time molten steel casting operation can be implemented through the control system even in an accident state, and severe safety production accidents such as molten steel leakage caused by variation of the crystallizer taper can be avoided.

Description

technical field [0001] The invention belongs to the technical field of hydraulic control for continuous steel casting, and in particular relates to a hydraulic control system for on-line maintenance of crystallizer taper. Background technique [0002] At present, the mold taper maintenance equipment in the field of continuous steel casting at home and abroad usually uses a servo motor to drive a ball screw push rod to control the narrow side of the mold. Due to the complex structure of the drive device composed of the servo motor and the ball screw, it takes up a lot of space. And too many transmission links lead to excessive gaps, and the taper of the crystallizer changes due to the bulging force of the billet during the long-term molten steel casting process, resulting in safety production accidents such as billet quality problems and molten steel leakage. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned problems ...

Claims

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Application Information

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IPC IPC(8): F15B21/08F15B20/00B22D11/057
CPCB22D11/057F15B20/00F15B21/08F15B2211/70F15B2211/765
Inventor 丘铭军郭星良陈国防宁博
Owner CHINA NAT HEAVY MACHINERY RES INSTCO