Plane Rapid Gate Double Acting Hydraulic Cylinder QPKY

Custom Hydraulic Cylinder for Hydraulic Hoist in Water Conservancy and Hydropower

Product Summary

The QPKY plane rapid gate double acting hydraulic cylinder is a custom-built piston-type cylinder engineered for hydraulic hoist systems in water conservancy and hydropower projects. This double acting hydraulic cylinder is designed to open, close, position, and lock water gates under high pressure and heavy load, ensuring reliable flood control, water storage, and flow regulation. With a design holding force specification reaching 5000 kN, this cylinder provides the necessary capacity to quickly and smoothly close emergency gates under critical conditions, protecting powerhouses and core units. Our cylinders are manufactured by Changzhou Hydraulic Complete Equipment Co., Ltd., a factory established in 1990 with over 35 years of experience in hydraulic hoist equipment.

Key Selling Points

• High Holding Force (5000 kN): The cylinder design meets the 5000 kN holding force specification for hydraulic hoists, ensuring reliable closure of tailrace emergency gates during unit failure or pipeline rupture, instantly cutting off tailrace flow to safeguard the underground powerhouse.
• Precision Flatness Control (0.05 mm/m²): The structurally complex gate slot cover plate integrates precision devices with flatness error strictly controlled within 0.05 mm per square meter, ensuring seamless fit between cover plate and gate slot for smooth installation and commissioning.
• Nonstandard Customization: This cylinder is a nonstandard piston-type hydraulic cylinder, customizable in bore, stroke, mounting, and materials (carbon steel, alloy steel, stainless steel) to meet specific project requirements.
• Rugged for Harsh Conditions: Designed for outdoor or underwater installation, capable of withstanding water impact, vibration, humidity, sand, particle wear, and oil emulsification, with good sealing, anti-cavitation, and corrosion resistance for reliable performance.
• Certified Quality Management: Manufactured under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certified systems, ensuring design, development, production, and service quality.
• Flexible Supply Conditions: MOQ of 1 piece, delivery within 15~60 days depending on product type, standard export packaging, and T/T payment terms.

Technical Specifications

Models and Options

This QPKY series is available as custom-engineered solutions based on your project specification. Configuration options include bore size, stroke length, mounting style, port positions, and special features for emergency operation. The cylinder can be manufactured in different material grades – carbon steel, alloy steel, or stainless steel – depending on environmental requirements. As a nonstandard product, each unit is designed to match your hydraulic system and gate hoist control requirements.

Materials and Structure

• Material Options: Carbon steel, alloy steel, and stainless steel are available. Selection depends on the operating environment; stainless steel offers enhanced corrosion resistance for submerged installations.
• Structure: Piston-type cylinder designed for double-action operation, providing controlled movement in both extend and retract directions.
• Sealing System: Advanced sealing arrangement to handle high pressure, water impact, and particle wear, with anti-cavitation and corrosion resistance.
• Testing: Each cylinder undergoes 100% testing before delivery to ensure operating reliability.

Applications

The QPKY hydraulic cylinder is specifically applied in water conservancy and hydropower projects for hydraulic hoist systems. Typical applications include:

• Opening, closing, positioning, and locking of hydraulic gates
• Flood control and drainage
• River regulation
• Gate hoist control in pumped storage power stations
• Emergency closure of tailrace gates

It also suits mechanical/marine/mining equipment, oil industry, vehicles, energy, and port facilities where reliable linear actuation is required.

Customization

As a nonstandard hydraulic cylinder manufacturer, we support full customization to match your exact system requirements. Our in-house engineering team (20 engineers) works from your drawings or concepts to deliver a tailored cylinder. Customization options include cylinder dimensions, mounting interfaces, stroke length, port connections, material selection, color, special coatings, and sealing upgrades. We can also provide complete hydraulic hoist systems including cylinder, hydraulic power unit, and electrical control system.

Case Study

Pumped Storage Power Station – Gate Hoist Control

In a recent project for a pumped storage power station, our QPKY hydraulic cylinders were used for gate hoist control in water conservancy and hydropower engineering. The client required reliable closure of the tailrace emergency gate under emergency conditions. The design specification for the holding force of the core hydraulic hoist reaches 5000 kN, enabling rapid and smooth closure of the tailrace emergency gate. On-site measurement confirmed that the structurally complex gate slot cover plate achieved a flatness error of 0.05 mm per square meter, ensuring a seamless fit between cover plate and gate slot. This installation has operated effectively for over 10 years.

FAQ

Inquiry Information

For more details or to request a quote, please contact:

Miss. Zhang
Tel/WhatsApp: +8615906122063
Email: zzl@czhydraulic.com
Address: NO.1 Xinhui Road, Wujin High-Tech Development District, Changzhou City, Jiangsu Province, China

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