Drag chains in oil refinery inspection systems

Drag chains in oil refinery inspection systems


In oil refinery inspection systems, the use of drag chains has become increasingly important. These chains play a crucial role in ensuring the smooth operation and longevity of the inspection equipment. In this article, we will explore the various aspects of drag chains and their significance in the oil refinery industry.

1. Understanding Drag Chains

Drag chains, also known as cable carriers or energy chains, are mechanical systems used to guide and protect cables and hoses in dynamic applications. They are typically made up of interconnected links or segments that allow for flexibility and easy movement. Drag chains are designed to endure harsh operating conditions, such as extreme temperatures, chemicals, and mechanical stress.

2. Importance of Drag Chains in Oil Refinery Inspection Systems

Oil refinery inspection systems involve the use of advanced equipment that requires precise movement and positioning. Drag chains play a vital role in these systems by providing a reliable and secure method of cable and hose management. Here are some key reasons why drag chains are essential:

2.1 Cable and Hose Protection

Drag chains offer excellent protection to cables and hoses by keeping them organized and preventing excessive bending, twisting, or tangling. This protection ensures the longevity of the equipment and minimizes the risk of cable or hose damage, which can lead to costly repairs and downtime.

2.2 Enhanced Equipment Performance

By eliminating cable and hose interference, drag chains optimize the performance of oil refinery inspection systems. Smooth movement and uninterrupted operation enable accurate data collection, efficient inspections, and improved overall productivity.

3. Types of Drag Chains

There are various types of drag chains available for oil refinery inspection systems. Each type offers unique features and benefits based on specific application requirements. Here are some commonly used drag chain types:

3.1 Flexible Chain

Flexible chains are designed to provide maximum flexibility and bending capability while maintaining structural integrity. They are ideal for applications that require extensive movement in tight spaces or complex routing.

3.2 Plastic Drag Chain

Plastic drag chains are lightweight, corrosion-resistant, and suitable for applications where weight reduction is essential. These chains offer excellent chemical resistance and can withstand harsh environmental conditions.

3.3 Bushchains

Bushchains, also known as enclosed or tube-style chains, provide a high level of protection to cables and hoses. They feature a fully enclosed design, which shields the components from external contaminants, such as dust, dirt, and moisture.

3.4 Tabletop Chain

Tabletop chains are commonly used in oil refinery inspection systems that require smooth and precise linear movement. These chains offer high load-bearing capacity and low friction, ensuring reliable operation even under heavy loads.

3.5 Multiflex Chain

Multiflex chains are designed to accommodate various cable and hose sizes within a single chain. This versatility makes them suitable for applications with different requirements or those that undergo frequent changes in cable or hose configurations.

4. Application Scenarios

Drag Chain Application Scenarios

Drag chains find extensive use in oil refinery inspection systems across multiple applications. Here are some typical scenarios where drag chains play a vital role:

4.1 Robotic Inspection Systems

Robotic inspection systems require precise cable and hose management to ensure smooth movement and accurate data collection. Drag chains provide the necessary protection and guidance for these systems, enabling efficient inspections in hazardous or hard-to-reach areas.

4.2 Conveyor Systems

Conveyor systems are widely used in oil refineries for material handling and transportation. Drag chains help organize and protect cables and hoses on conveyor belts, ensuring uninterrupted operation and minimizing the risk of damage or downtime.

4.3 Remote Monitoring Systems

Remote monitoring systems rely on cables and hoses for data transmission and power supply. Drag chains maintain the integrity and reliability of these connections, even in challenging environments, allowing for accurate and efficient monitoring of refinery operations.


Drag chains are indispensable components in oil refinery inspection systems. They provide vital cable and hose protection while optimizing equipment performance. With a wide range of available types, drag chains can be tailored to specific application requirements. As a leading company in the Chinese chain market, our products, including drag chains, flexible chains, plastic drag chains, bushchains, plastic chains, tabletop chains, and multiflex chains, are manufactured using state-of-the-art equipment. We pride ourselves on delivering high-quality products, competitive pricing, and excellent customer service. Contact us today to discuss your customization needs.

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Author: Czh