Energy and Water Conservancy
Precision Power: Hydraulic Solutions for Energy & Water Conservancy
The energy and water conservancy sectors demand robust, high-performance solutions to operate reliably under extreme pressures and challenging environmental conditions. Toleng Hydraulics provides specialized hydraulic systems and components engineered to meet these rigorous industry standards, ensuring safety, efficiency, and long-term durability.
In the energy sector, our hydraulic cylinders are critical for the complex machinery used in oil and gas extraction. For demanding wellsite applications, we supply heavy-duty cylinders for fracturing trucks and cementing trucks, where precise control and immense force are required to manage high-pressure fracturing processes and well cementing operations. Furthermore, Toleng Hydraulics supports the development of renewable energy. We provide customized hydraulic solutions for ocean power generation systems, helping them withstand harsh marine environments while converting wave or tidal energy. In traditional wind power generation, our hydraulic units are used for pitch control, yaw brakes, and service cranes, enhancing turbine performance and reliability. We also contribute to the infrastructure of solar photovoltaic power generation by supplying cylinders for the solar tracking systems that position panels for maximum sunlight exposure, thereby optimizing energy output.
By combining engineering expertise with a focus on customization, Toleng Hydraulics delivers the precision and power required to advance projects in energy production and water management, solidifying our role as a key partner in these critical industries.
- High-pressure hydraulic cylinders for fracturing trucks, designed to withstand extreme pumping conditions and ensure reliable well stimulation operations
- Precision cementing cylinders for cementing trucks, featuring wear-resistant materials and corrosion protection for consistent slurry mixing and injection
- Marine-grade hydraulic cylinders for ocean power generation systems, engineered for corrosion resistance and long-term reliability in saltwater environments
- Hydraulic pitch and yaw cylinders for wind turbines, enabling precise blade adjustment and safe rotor positioning in varying wind conditions
- Solar tracking cylinders for photovoltaic installations, allowing for smooth, automated panel positioning to maximize energy absorption throughout the day
- Custom-engineered hydraulic systems for water conservancy applications, including gate control, dam maintenance, and flood defense mechanisms
References + Applications
Customized hydraulic cylinders forCementing Truck
Oil and gas well cementing operations are among the most demanding in the energy sector, requiring equipment that can withstand extreme pressures, abrasive slurries, and continuous operation in remote locations. During a multi-well cementing campaign in a West Texas oil field, a fleet of 700-type cementing trucks was deployed to secure casing strings and perform squeeze cementing jobs at depths exceeding 4,500 meters. These units operated around the clock under desert conditions, pumping hundreds of tons of cement slurry and completion fluids. Toleng Hydraulics provided custom-designed hydraulic cylinders for these cementing units, including plunger pump cylinders, mixing system cylinders, and auxiliary function cylinders.
Plunger Pump Cylinder (High-Pressure Fluid End):
Piston Diameter: 90 mm (plunger type)
Piston Rod Diameter: N/A (plunger design)
Stroke: 160 mm
Working Pressure: 70 MPa (10,150 psi)
Function: Drives the triplex plunger to pump cement slurry into the wellbore at high pressure for primary cementing and squeeze operations .
Mixing System Cylinder (Slurry Mixer):
Piston Diameter: 63 mm
Piston Rod Diameter: 35 mm
Stroke: 300 mm
Working Pressure: 21 MPa
Function: Controls the density control valve and recirculation mixer to maintain precise slurry weight within ±0.1 lb/gal during continuous mixing .
Discharge Manifold Cylinder (High-Pressure Routing):
Piston Diameter: 80 mm
Piston Rod Diameter: 45 mm
Stroke: 250 mm
Working Pressure: 70 MPa (10,150 psi)
Function: Operates the high-pressure manifold valves to redirect slurry flow between different discharge lines without manual intervention .
Radiator Shutter Cylinder (Cooling System):
Piston Diameter: 50 mm
Piston Rod Diameter: 25 mm
Stroke: 150 mm
Working Pressure: 16 MPa
Function: Automatically adjusts radiator shutters to maintain optimal engine and transmission temperatures during prolonged pumping operations in 50°C ambient heat .
Hydraulic System Charge Pump Cylinder:
Piston Diameter: 70 mm
Piston Rod Diameter: 40 mm
Stroke: 200 mm
Working Pressure: 25 MPa
Function: Controls variable displacement pumps that power the centrifugal charging pumps for the main plunger pump fluid end .
Technical Highlights:
137.9 MPa The high-pressure fluid end cylinders on the cementing pumps are engineered to withstand burst pressures exceeding 200 MPa, featuring high-strength alloy steel construction with specialized heat treatment for erosion resistance. Operating at continuous pressures up to 70 MPa, these cylinders deliver flow rates exceeding 1,700 L/min while pumping abrasive cement slurries containing silica sand and ceramic proppants .
All cylinders incorporate advanced erosion-resistant coatings and specialized seal systems designed to withstand the extreme abrasion from cement particles, with tungsten carbide plunger coatings providing up to 3x longer service life in continuous slurry pumping applications. The sealing arrangement maintains integrity in operating temperatures ranging from -30°C to +50°C while resisting chemical attack from cement additives and acids .
Integrated non-contact position sensors provide real-time feedback for automated density control and remote operation, enabling precise ±1 mm accuracy for manifold positioning and automated cement head operation from the 30-meter remote control station, ensuring crew safety during high-pressure pumping operations
Heavy-duty hydraulic cylinders for Ocean Power Generation in China
This advanced Wave Energy Converter (WEC) belongs to the offshore renewable energy generation category.
Toleng supplies the specialized hydraulic components and cylinders for this marine power system, enabling a rated power output of 750 kW per unit. The hydraulic cylinders ensure smooth energy capture from irregular wave patterns and provide powerful, controlled conversion to electrical energy, thereby improving grid stability and reducing levelized cost of energy (LCOE).
Technical Specifications:
Maximum Wave Height Operation: 6 meters
Rated Power Output: 750 kW
System Displacement: 12 tons (power take-off unit)
Operational Depth: 50 meters (seabed installation)
Hydraulic Cylinders are manufactured by Toleng Hydraulics.
| Cylinder Type | Piston Diameter | Stroke | Working Pressure |
|---|---|---|---|
| Power Take-Off Cylinder | 280 mm | 2,500 mm | 280 bar |
| Accumulator Charging Cylinder | 160 mm | 800 mm | 250 bar |
| Mooring Tension Cylinder | 200 mm | 1,500 mm | 220 bar |
| Access Hatch Actuator | 63 mm | 300 mm | 160 bar |
Technical Highlights:
The 280 mm bore Power Take-Off cylinders are engineered to capture the low-frequency, high-force motion of ocean swells. Operating at peak pressures up to 280 bar, they convert linear wave motion into hydraulic flow, driving a generator to produce consistent electricity even as wave intensity varies.
All cylinders feature marine-grade materials including super-austenitic stainless steel pistons rods and specialized bronze bushings, designed to withstand continuous immersion in seawater. They maintain reliable performance in temperatures ranging from -10°C to +35°C.
The cylinders incorporate integrated accumulators and manifold blocks directly mounted to the cylinder body, creating a compact Power Take-Off (PTO) unit. This design minimizes external piping and potential leak points in the sensitive marine environment. Advanced redundant seal systems with PTFE-based energizers provide protection against saltwater ingress while maintaining zero internal leakage for efficient energy transfer.
Some of our Applications
Fracturing truck
Cementing Truck
Ocean Power Generation
Wind Power
Solar Photovoltaic Power Generation