Chinese
High-pressure liquid pressure sources are critical equipment used to generate high-pressure fluids in industrial and scientific research fields. To ensure their long-term stable operation and measurement accuracy, a systematic maintenance procedure must be followed. Below are the specific maintenance guidelines:
### **1. Daily Inspections**
1. **Visual and Connection Checks**
- Regularly inspect the container’s exterior and connection points for leaks, deformation, or corrosion.
- Address any issues immediately to prevent escalation.
2. **Valve and Gauge Checks**
- Ensure valves, pressure gauges, thermometers, and other accessories are functioning properly.
- Repair or replace any components showing abnormal readings or operational issues.
3. **Internal Cleaning**
- Regularly remove sediment and debris from inside the container to prevent corrosion and wear.
- Use specialized tools and methods for hard-to-reach areas.
### **2. Coating Maintenance**
1. **Coating Inspection and Repair**
- Periodically check the coating for peeling, cracking, or rust, and repair as needed.
- A well-maintained coating significantly extends equipment life.
2. **Coating Cleaning**
- Keep the coating surface clean to maintain its anti-corrosion properties.
3. **Anti-Corrosion Performance Testing**
- Use professional equipment to periodically test coating performance and repair any deficiencies promptly.
### **3. Pressure Testing**
1. **Regular Pressure Tests**
- Conduct pressure tests at specified intervals to verify the equipment’s pressure-bearing capacity and safety.
- Strictly adhere to operational procedures during testing.
2. **Test Record Management**
- Document test details, including time, pressure values, and personnel, for future reference.
### **4. Working Fluid Management**
1. **Fluid Selection**
- Use appropriate fluids such as distilled water, purified mercury, or alcohol, ensuring compatibility with the equipment.
2. **Fluid Replacement and Deaeration**
- Replace fluids regularly based on usage frequency and fluid properties.
- Ensure all air is purged from the system during replacement to maintain measurement accuracy.
### **5. Environmental Control**
1. **Temperature Control**
- Maintain ambient temperature within the range of (20±2)°C to (20±10)°C to avoid performance fluctuations.
2. **Humidity Control**
- Avoid humid environments; use dehumidifiers if necessary to prevent moisture damage to electronic components.
### **6. Seal Integrity Check**
- Pressurize the system to its upper limit and hold for a period to check for pressure stability.
- If pressure drops too quickly, inspect and repair sealing components.
### **7. Periodic Calibration**
1. **Calibration Interval**
- Perform calibration every two years to ensure measurement accuracy.
2. **Professional Calibration**
- It is recommended to entrust calibration to specialized institutions for reliable results.
### **8. Maintenance During Long-Term Inactivity**
1. **Pressure Relief**
- Fully depressurize the system before long-term storage to prevent component deformation.
2. **Pipe Protection**
- Seal exposed pipe openings or install dust covers to prevent contamination.
### **Summary**
Maintaining high-pressure liquid pressure sources involves daily inspections, coating protection, pressure testing, fluid management, environmental control, seal checks, periodic calibration, and storage precautions. Strict adherence to these measures will significantly enhance equipment reliability, stability, and service life.