1. Variable Frequency Drive (VFD) Replaces Valve Throttling
Using a high-voltage VFD (or hydraulic coupling) converts the throttling loss of "closing the valve" into increased efficiency through "reducing the motor speed," resulting in an average energy saving of 25–33%.
2. On-demand segmented operation
The system automatically switches between 1-point, 2-point, and 3-point modes based on the number of descaling points, corresponding to 45 Hz, 48 Hz, and 50 Hz outputs, eliminating the "big horse pulling a small cart" problem.
3. Accumulator + VFD Synergy
During the descaling interval, the pump replenishes water to the
accumulator at a low speed. During descaling, the accumulator and pump
supply water simultaneously, minimizing the time the pump operates at
high speed and reducing overall power consumption by over 20%. 4.
Reduced Speed and Standby During Non-Operating Hours
During idle time such as roller changes, warming, and maintenance, the
frequency is directly reduced to 15–30 Hz. Motor power is proportional
to the cube of the speed, reducing energy consumption to 7–12% of full
load.
5. Intelligent Minimum Flow Valve Discharge
During low-speed operation, the minimum flow valve automatically opens
to dissipate heat, avoiding inefficient circulation and reducing excess
energy waste.
6. Pump Lifecycle Management
Using big data to monitor vibration, current, and temperature rise,
early warning of failures is provided, optimizing maintenance cycles and
reducing high-consumption operation during faults, saving an additional
3–5% in energy.

Company Profile
Petrel's foreign trade share takes around 50%. To meet standards and requirement of different foreign clients, Petrel continuously improve its production management.
Petrel improves product management system by ensuring the trackability of raw material sourcing, heat treatment process, and machining accuracy. The codes on key parts allow Petrel to track which steel mill supplies the material, which factory conducts the heat treatment, inspection records of fine machining, etc.
To sustain products' high quality, Petrel heavily invests its calibration lab by importing various inspection equipment, such as spectrometers, Brinell hardness gauges, coordinate measuring machine, etc.
To promote and sustain a high level of productivity and safety, Petrel also pays attention to employee training, which includes 6s lean methodology, instructions of equipment, standards, requirement of production process, etc.
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