Integrated control device for short-circuit self-cutoff of zero-point potential difference of electrolyzer

Abstract

The invention discloses an electrolytic cell zero-point potential difference short-circuit self-cutting integrated control device, including 501IP junction box, field instrument, potential difference equipment, engineer station, operation station, video equipment, buzzer; 501IP junction box, field instrument; The local junction box is placed on the site of the electrolyzer. The positive pole, negative pole and midpoint of the electrolyzer are respectively connected to the input end of the triple circuit breaker through the input cable, and the output end of the triple circuit breaker is connected to the 501IP alarm panel through the output cable. The triple circuit breaker Installed in the local junction box, the 501IP junction box converts the voltage difference signal of the electrolytic cell into a 4‑20MA current signal, and introduces the DCS control system and the paperless recorder respectively, and the DCS control system transmits the signal to the process operation station, and the process operation station Equipped with an external display device, the external display device centrally displays the 501IP alarm panel screen, and the DCS control system controls the buzzer to complete the sound alarm. The device set has low failure rate, low repair and maintenance cost, and more stable operation, which ensures the safe operation of production.

Description

technical field [0001] The invention relates to a circuit protection device, in particular to an electrolytic tank zero-point potential difference short-circuit self-cutting integrated control device. Background technique [0002] The traditional Asahi Kasei electrolytic cell zero point potential difference detection device is to monitor the voltage difference between the positive and negative sides of the electrolytic cell in real time, so as to judge whether the potential distribution of the positive and negative halves of the electrolytic cell is balanced, and avoid uneven potential distribution of the electrolytic cell When there are certain factors (such as membrane rupture, flow interruption, leakage, etc.), the current of the electrolytic cell can be cut off in time to avoid the continuation of the dangerous situation and ensure the safe operation of the equipment. The specific calculation method is as follows: [0003] The centering voltage of the positive terminal -...

AI Technical Summary

Problems solved by technology

[0005] The problem with the above technology is: the interlocking vacuum period caused by the temporary removal of the zero-point potential difference during the process of lifting and lowering the load of the electrolytic cell, and the potential safety hazard caused by the short circuit of the cable during this process

[0006] On the other hand, because the electrolyzer DC strong current signal on the existing 501IP alarm panel is directly introduced from the site, the cable transmission distance is long, other signal interference is strong, and the zero point potential difference often fluctuates, resulting in interlocking power outage of the electrolyzer

The failure rate of the alarm light on the 501IP alarm panel is increasing year by year. The alarm light is easily disturbed by the signal, and it will light up by mistake, resulting in a false alarm. When the alarm light fails, it will not light up, which will easily cause accidents; the existing 501IP alarm panel is all realized by hardware. The cost of equipment is high, the wiring is complicated, and fault finding is difficult, and there are electrical components on the board, which may easily cause signal interference to the equipment, cause false alarms, and affect the stable operation of the system

Images