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PICS of water-ring vacuum pump stabilizing energy-saving system in paper mill

Product Description

The PICS system mainly uses RENLE's dedicated frequency converter, PLC and pressure detection module for closed-loop control of the vacuum pump equipment, so as to achieve a constant vacuum in the vacuum system. This system uses a decoupling control method, which uses advanced algorithms to remove the associated influence of each series vacuum pump and obtain a stable and lasting good control effect.

working principle:

The PICS system mainly uses Renault's dedicated frequency converter, PLC and pressure detection module for closed-loop control of the vacuum pump equipment, so as to achieve a constant vacuum in the vacuum system. This system uses a decoupling control method, which uses algorithms to remove the associated influence of each series vacuum pump and obtain a stable and lasting good control effect.

Through the vacuum pressure detection module, it is used to measure the outlet pressure of the vacuum pump and become a standard signal, which is transmitted to the PLC analog input module. The analog input module converts the voltage signal into a digital quantity and inputs it to the CPU module. The CPU compares the vacuum degree set by the user with the measured vacuum degree, and then performs decoupling calculation. Finally, the standard signal is output through the analog output module and sent to the corresponding inverter to run at an appropriate speed, so that the vacuum degree reaches the set value. Set requirements. This system is supplemented by a water treatment unit developed by Qingdao Hainahua Automation Equipment to reduce the amount of water in the vacuum pump and greatly reduce the system load. According to the power calculation formula, the power consumption of the motor before and after the energy-saving transformation can be calculated, and the power consumption per unit time is the power consumption; at the same time, the voltage, current and power factor before and after the energy-saving transformation can be compared to calculate the energy saving. Power.

Features:

1. The power saving benefit is remarkable, and the power saving rate is as high as 25%-40%;

2. Ramp start function to eliminate the inrush current during traditional start;

3. The vacuum pressure is stable, controlled at ±1%, which effectively reduces the paper break rate and improves product quality;

4. Reduce the motor heating and the failure rate of the vacuum pump, effectively prolong the service life of the motor and reduce the maintenance cost;

5. Microcomputer intelligent control, automatic adaptation, automatic tracking, without manual adjustment, the whole system is closed-loop control;

6. Automatic conversion of power frequency and frequency conversion status, automatic fault alarm and switch to power frequency operation, without affecting normal operation;

7. The original water ring vacuum pump will not be adjusted, and the original vacuum pipeline layout will not be changed in principle;

8. Convenient installation, simple debugging, and the installation and debugging time does not exceed 8 hours;

Technical characteristics:

1. Control method: microprocessor program control;

2. Frequency control range: 0-50Hz, frequency resolution 0.1Hz;

3. Rated output voltage: 0%-100% of rated voltage is adjustable, with perfect soft start and soft stop functions;

4. Maximum overload current: low voltage 150% rated current for 1 minute, 200% rated current for immediate protection; high voltage 120% rated current for 1 minute, 180% of rated current for immediate protection;

5. Display and setting: Siemens touch screen has perfect parameter display, historical operating curve, various alarm records, vacuum setting and functional parameter changes;

6. Control performance: perfect control performance, reset, external fault detection, etc.;

7. Standard functions: current limit, speed tracking, frequency upper and lower limit, adjustable acceleration and deceleration mode, PID regulator, proportional linkage, remote control, etc.;

8. Protection function: overvoltage, undervoltage, overcurrent, current limiting, overheating, electronic thermal overload relay, fault protection and timing function;

Technical index:

Suitable for low-voltage inverter products, suitable for high-voltage inverter products

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