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LF refining furnace electrode regulator redundancy control switching method
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A redundant control and regulator technology, applied in the direction of electrical program control, sequence/logic controller program control, program control, etc., can solve the problems of switching electrode regulators, equipment damage, disrupting the rhythm of steelmaking production, etc. Achieve high reliability and good stability
Active Publication Date: 2015-12-09
CHINA NAT HEAVY MACHINERY RES INSTCO
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[0003] The purpose of the present invention is to overcome the failure of the existing electrode regulator of the LF refining furnace to judge and switch to the redundant electrode regulator in time, which disturbs the rhythm of steelmaking production and even causes equipment damage
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Embodiment 1
[0024] In order to overcome the failure of the electrode regulator of the existing LF refining furnace to be able to judge and switch to the redundant electrode regulator in time, it will disturb the steelmaking production rhythm and even cause equipment damage.
[0025] Such as figure 2 As shown, the switching method for redundant control of LF refining furnace electrode regulator provided by the present invention includes the following steps:
[0026] Step 1: Setting
[0027] Set the pulse number variable a between PLC9 and electrode regulator-10, the initial value of a is a', when PLC9 sends a pulse signal to electrode regulator-10, a=a+1, when PLC9 receives the electrode regulator When a pulse signal returned by 10, a=a-1;
[0028] Set the pulse number variable b between PLC9 and electrode regulator two 8. The initial value of b is b'. When PLC9 sends a pulse signal to electrode regulator two 8, b=b+1, when PLC9 receives electrode regulator When a pulse signal returned by 8 is, ...
Embodiment 2
[0047] On the basis of Example 1, as a preference, the f 1 =f 2 =10Hz. The a'=10 and b'=10.
[0048] It should be further explained that the switching method for redundant control of the electrode regulator of the LF refining furnace includes the following steps:
[0049] Step 1: Setting
[0050] Set the pulse number variable a between PLC9 and electrode regulator-10, the initial value of a is 10. When PLC9 sends a pulse signal to electrode regulator-10, a=a+1, when PLC9 receives electrode regulator-1 10 When a pulse signal is returned, a=a-1;
[0051] Set the pulse number variable b between PLC9 and electrode regulator two 8. The initial value of b is 10. When PLC9 sends a pulse signal to electrode regulator two 8, b=b+1, when PLC9 receives electrode regulator two 8 When a pulse signal is returned, b=b-1;
[0052] PLC9 periodically sends a pulse signal with a frequency of 10 Hz to the electrode regulator 10 through the pulse transmitter, and the electrode regulator 10 returns a puls...
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Abstract
The invention belongs to the technical field of an LF refining furnace electroderegulatorcontrol system, particularly relates to an LF refining furnace electroderegulator redundancy control switching method, and is used for fault judgment and automatic switching of LF furnace electrode regulators. According to the LF refining furnace electrode regulator redundancy control switching method, the operation state of the mutually redundant electrode regulators is judged in real time in production, and another electrode regulator is automatically switched on when a fault occurs so that the LF refining furnace electrode regulator redundancy control switching method has characteristics of being high in reliability, great in stability, low in cost and convenient for maintenance.
Description
technical field [0001] The invention belongs to the technical field of an electrode regulator control system of an LF refining furnace, and in particular relates to a switching method for redundant control of an electrode regulator of an LF refining furnace, which is used for fault judgment and automatic switching of the electrode regulator of an LF refining furnace. Background technique [0002] Since the LF refining furnace has the characteristics of fast production rhythm, fast heating speed and high heating efficiency in the steelmaking process, if the electrode regulator fails to judge and switch to the redundant regulator in time, it will directly affect the steelmaking production rhythm. In severe cases, it may cause equipment damage. Contents of the invention [0003] The purpose of the present invention is to overcome the failure of the existing electrode regulator of the LF refining furnace to judge and switch to the redundant electrode regulator in time, which d...
Claims
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