#### **Product Overview**
This locking hydraulic cylinder is specifically designed for oilfield equipment (such as production trees, blowout preventers, well servicing rigs, etc.). It features a special structure that is **able to withstand high pressure and resist corrosion**, meeting the core requirements of the oilfield industry for **extreme environmental adaptability, safe locking, and rapid response**. It is suitable for key aspects such as wellhead device control, pipeline connection, and equipment positioning.
---
### **Core Advantages**
1. **Super High Pressure Tolerance**
- Working pressure: 35-70 MPa, Bursting pressure: 105 MPa
- Utilizes the **multi-layer prestressed wound cylinder tube** technology
- Piston rod surface: Laser cladding WC coating (hardness ≥ HRC65)
2. **Adaptation to Harsh Environments**
- The entire series is made of 316L stainless steel with nickel plating, resistant to H₂S/CO₂ corrosion
- Operates within a wide temperature range of -40℃ to +120℃ (optional electric heating model available)
- IP68 protection level, resistant to sand and salt spray erosion
3. **Intelligent Locking System**
- Dual redundant hydraulic locking mechanism + mechanical self-locking dual safety measures
- Real-time monitoring of locking force (optional 2000psi pressure sensor)
- Quick locking within 0.3 seconds in emergency situations
4. **Easy Maintenance Design**
- Modular valve block integration, allowing for quick on-site replacement in 10 minutes
- Self-compensating sealing system (lifetime ≥ 5 years)
- Non-disassembly oiling maintenance interface
---
### **Technical Specifications**
| Item | Standard Model | Enhanced Model | |---------------|---------------------|---------------------|
| **Cylinder Diameter** | Φ80 - 200mm | Φ250 - 400mm |
| **Locking Force** | 50 - 200T | 200 - 800T |
| **Working Pressure** | 35MPa | 70MPa |
| **Temperature Range** | -40℃ ~ +85℃ | -50℃ ~ +120℃ |
| **Sealing Material** | HNBR + PTFE composite | Fluororubber (FFKM) |
| **Corrosion Resistance Grade** | NACE MR0175 | NACE MR0103 |
| **Connection Standard** | API 6A/17D | API 16C |
---
### **Typical Applications**
- **Production Well Valve**: Hydraulic drive locking for main valves/pendant valves
- **Blowout Preventer Assembly**: Locking and position retention of the ram
- **Continuous Casing String Equipment**: Clamping control for the injection head
- **Wellhead Equipment**: Connection of the casing head/oil pipe head
---
### **Selection Guide**
1. **Matching of Working Conditions**:
- For shallow well operations: Standard type (35 MPa)
- For ultra-deep wells/high-pressure wells: Enhanced type (70 MPa)
- For oil fields with sulfur: Anti-sulfur special treatment type
2. **Safety Certification**:
- Mandatory: API 6A/17D
- For extremely cold regions: Additional ISO 10423 low-temperature certification is required
- For offshore platforms: DNV-GL certification is necessary
3. **Intelligent Configuration**:
- Routine operations: Mechanical locking type
- Automated well site: Electrically controlled proportional locking + 4-20mA feedback
---
### **Maintenance Plan**
1. **Daily Inspection**:
- Measure piston rod wear every week (≤ 0.05mm/year)
- Test hydraulic lock function every month
2. **Critical Maintenance**:
- Replace hydraulic oil and clean the system annually
- Conduct a comprehensive inspection of the sealing system every 3 years
3. **Fault Response**:
- Pressure leakage → Check valve block seal
- Locking failure → Test accumulator pressure
- Action jamming → Clean piston rod coating
---
### **Service Commitment**
- Provide **well condition adaptability analysis report**
- 48-hour emergency spare parts supply (for major oil fields worldwide)
- On-site technicians will be present within 72 hours
- Product lifespan **≥ 10 years**
Contact Now