HJL30 Elevator Low-Noise Power Unit
- Low-Noise IE4 Electrical Motor CE Certified
- Hand Pump Emergency Power Supply
- Proportional Valve makes Accurate Flow Control
- Emergency Lowering Handle For Power Loss
- Description
- Hydraulic Schematic Diagram
The elevator submersible Proportional Valve Power Unit is an innovative hydraulic power system specifically designed for hydraulic elevators. It represents an upgraded solution from dual-valve and triple-valve power units. Utilizing electro-hydraulic proportional valve control ensures precise operation and smooth, seamless acceleration and deceleration. Designed for easy on-site installation and commissioning, the unit incorporates internationally renowned proportional flow valves (such as HydraForce or HYDAC), achieving a breakthrough in flow control technology for hydraulic elevators.
Features
High-Precision Dynamic Response
Microsecond-level closed-loop control: Equipped with high-frequency voice coils (frequency response ≥ 100 Hz) and a PID controller with 0.1% resolution, achieving flow adjustment response time ≤ 10 ms. This ensures a smooth acceleration curve without jolts (acceleration fluctuation < 0.05 m/s²).
Comfort-Optimized Design (Optional, requires compatibility with the electronic control system)
Adaptive flow matching: Automatically calculates the optimal flow curve based on car load (detected via pressure sensor) and target speed (e.g., increased flow during empty load for faster descent), reducing inertial impact during start and stop phases. Passenger-perceived vibration ≤ 12 cm/s² (exceeding ISO 18738-1 standards).
Full-Stroke Linear Compensation
Integrated pressure feedback valve combined with temperature-viscosity compensation algorithm achieves flow control accuracy of ±0.5% FS, completely eliminating the flow step phenomenon common in traditional throttle valves.
Multi-Mode Operation Strategy (in coordination with the electronic control system)
Enables near-imperceptible transitions during descent acceleration and deceleration.
Work Performance Comparison
| Control Method | Dual-Valve / Triple-Valve System | Imported Proportional Flow Valve System |
| Speed Smoothness | Stepped speed changes, noticeable jerk for passengers | Continuously variable speed control, smooth and continuous acceleration curve |
| Leveling Accuracy | ±10mm (relies on mechanical limit) | ±2mm (closed-loop correction with photoelectric switch) |
| Field Debugging | Requires higher debugging experience from workers | Easy debugging, only requires adjusting the control current of the amplifier board |
