Changchun Hofu Technology Co., Ltd.
Hotline: +86-431-80606168
This system adopts a dual-module design of pressure control and flow control, enabling a single unit to serve two purposes:
Pressure Control Mode
Based on a closed-loop control algorithm, the system uses an electrical signal to drive a proportional valve, outputting pilot air pressure to control the main valve's opening. It continuously monitors the output pressure and automatically adjusts it to achieve precise tracking and stable maintenance of the target pressure.
Flow Control Mode
Based on a closed-loop control algorithm, the system calculates the flow rate in real time using the pressure difference before and after the throttling element, indirectly achieving precise flow regulation through pressure control, without requiring additional flow meters.
| Component | Function Description |
|---|---|
| Electro-proportional component | Converts electrical signals into corresponding pneumatic outputs as the pilot control stage |
| Pressure servo main valve | Controls the opening of the main valve spool based on pilot air pressure, achieving linear regulation of high-pressure gas |
| Throttling element + dual pressure sensors | Measures the pressure difference across the throttling element to calculate the flow rate in real time |
| Industrial control unit | Runs the control algorithm and performs signal acquisition and processing |
The system establishes a flow calculation model applicable to different flow conditions based on gas dynamics theory. After determining the effective flow parameters of the throttling element through calibration tests, the system can directly control the flow without a flow meter.
| Advantage | Description |
|---|---|
| High-Precision Control | Utilizes a closed-loop control algorithm, meeting the requirements of high-end industrial applications |
| Single Unit for Dual Functions | A single hardware system can switch between pressure or flow control via software, reducing equipment investment costs |
| Automated Operation | Supports target value setting, real-time feedback, and automatic adjustment, minimizing manual intervention and improving operational efficiency |
| Industrial-Level Reliability | Has been successfully applied in actual industrial production, verifying the system's stability and durability |
| No External Flow Meter Required | Flow regulation is achieved by calculating the pressure difference in the flow control mode, simplifying the system configuration |
This technical solution is suitable for various industrial and research scenarios that require precise control of gas pressure and flow:
| Industry | Application Scenario |
|---|---|
| Hydrogen Energy | Hydrogen refueling pressure control at hydrogen stations, pressure regulation of hydrogen storage tanks |
| Petrochemical Industry | Stabilization of pipeline gas pressure, precise gas flow ratio in reactors |
| Semiconductor Manufacturing | Pressure control in process chambers, flow regulation of special gases |
| Aerospace | High-pressure gas source simulation for ground test stands, testing of fuel supply systems |
| Vehicle Engineering | Gas supply pressure control for internal combustion engines, testing of pneumatic braking systems |
| Biopharmaceuticals | Non-sterile gas delivery in fermenters, pressure maintenance in cleanrooms |
| Scientific Research | Various gas dynamics experiments, material testing platforms |
Changchun Hufu Technology Co., Ltd. specializes in the R&D and manufacturing of precision gas pressure control systems. We combine modern embedded control technology, high-precision sensing technology, and industrial-grade actuating components to launch a series of products suitable for multiple scenarios:
We provide complete gas path design and control integration from low pressure to ultra-high pressure according to specific customer needs:
| Value Dimension | Description |
|---|---|
| Improved Control Accuracy | Precise control algorithms ensure the stability of gas pressure and flow, enhancing process consistency |
| Reduced System Cost | The dual-function design reduces equipment investment, eliminating the need for additional flow meters |
| Simplified System Integration | Integrated design reduces peripheral components, lowering system complexity |
| Enhanced Operational Efficiency | Automated control minimizes manual intervention, improving operational efficiency and safety |
| Reliable Technical Support | Provides full-process professional technical services from scheme design to on-site commissioning |
Gas precision control technology is playing an increasingly critical role in more and more high-end manufacturing and research fields. We are committed to becoming your reliable gas control partner with our professional technical capabilities, reliable product quality, and attentive service support.
If you have any needs for gas pressure/flow control products or technical inquiries, please feel free to contact us.