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Dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method

A technology of hydraulic system and sector segment, applied in the field of continuous casting equipment maintenance in the metallurgical industry, can solve the problems of low judgment accuracy, harsh working environment, high labor intensity, etc., so as to improve product quality, improve process control level, and increase economy. effect of benefit

Inactive Publication Date: 2012-01-11
HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is difficult to operate, the working environment is harsh, and labor-intensive, especially the problems of low judgment accuracy and inability to quantify

Method used

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  • Dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method
  • Dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method
  • Dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: The locking device of the hydraulic system of the sector section is faulty.

[0028]When the constant pulling speed, constant water volume, and displacement sensor feedback value are stable within 10 cycles, the "PLC S7-400" sends an instruction to "PLC S7-300" to lock the hydraulic system of the sector, and the hydraulic system of the 6# sector is At this time, the hydraulic oil in the upper and lower chambers of A hydraulic cylinder, B hydraulic cylinder, C hydraulic cylinder, and D hydraulic cylinder on the sector remains closed, and the hydraulic oil in the upper and lower chambers of the "PLC S7-300" will be transferred from "PLC S7-300" to "PLC S7- 400” feeds back the change of oil pressure in this sector, taking the data in hydraulic cylinder A as an example, the following table shows:

[0029]

[0030] The process of judging the relationship between P0 and P1 is as follows: when the pressure difference between P1 and P0 is 4.7 MPa and is greater ...

Embodiment 2

[0031] Embodiment 2: The seal at the piston in the sector hydraulic cylinder fails.

[0032] When the constant pulling speed, constant water volume, and displacement sensor feedback value are stable within 10 cycles, the "PLC S7-400" sends an instruction to "PLC S7-300" to lock the hydraulic system of the sector, and the hydraulic system of the 7# sector is At this time, the hydraulic oil in the upper and lower chambers of A hydraulic cylinder, B hydraulic cylinder, C hydraulic cylinder, and D hydraulic cylinder on the sector remains closed, and the hydraulic oil in the upper and lower chambers of the "PLC S7-300" will be transferred from "PLC S7-300" to "PLC S7- 400” feeds back the change of oil pressure in this sector, taking the data in hydraulic cylinder A as an example, the following table shows:

[0033]

[0034] The process of judging the relationship between P0 and P1 is as follows: when the pressure difference between P1 and P0 is 4.72 MPa, which is greater than ...

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Abstract

The invention relates to a dynamic slight press fan-shaped section hydraulic system leakage fault on-line judging and early warning method, which belongs to the technical field of continuous casting equipment maintenance in the metallurgical industry. The method has the technical scheme that (1) a roll gap control system PLCS7-300 sends a 'fan-shaped section hydraulic system locking' order to a remote station PLCS7-300; (2) the pressure value of the fan-shaped section hydraulic system is fed back; (3) the value of a fan-shaped section displacement sensor is fed back; (4) the roll gap control system PLCS7-400 judges the feedback pressure value of the hydraulic system and the value of the fan-shaped section displacement sensor combinedly; and further the results are output to a continuous casting master control system. With the method disclosed by the invention, roll gap control loss caused by the leakage fault of the hydraulic system can be prevented, the actual roll gap is controlledto meet the scope designed by the technology, the contraction taper of the roller gap is ensured to guarantee casting blank quality, an early warning function is played to protect fan-shaped section equipment, key equipment is monitored comprehensively and managed automatically in the whole continuous casting production process, the continuous casting production is stabilized, the technical control level is improved, the product quality is improved, and economic benefits are created.

Description

technical field [0001] The invention relates to an online judgment and early warning method for a leakage fault of a hydraulic system of a dynamic soft-pressed fan section, and belongs to the technical field of continuous casting equipment maintenance in the metallurgical industry. Background technique [0002] Dynamic soft reduction technology is a technology recognized in the world today that can significantly improve the internal quality of the slab. This technology is to compensate for the shrinkage of the slab by taking a real-time special reduction amount at the end of the solidification of the slab. This technology can significantly improve the quality of the slab. The dynamic soft reduction technology segment adopts the hydraulic execution method to control the change of the roll gap to realize the difference of the billet reduction. The hydraulic system is the direct driving force of the segment, and the execution of the hydraulic system of the segment directly deter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/16
Inventor 李贵阳彭兆丰许斌吝章国唐恒国李金波范佳
Owner HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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