China supplier Pipe Coupling, Ductile Iron Flexible Universal Coupling

Product Description

Pipe Coupling / Universal Joint Coupling / Universal Coupling

1. Application : 

*  used for pipe connection .
*  suit for Ductile Iron Pipe, Cast Iron Pipe, Steel, AC, Plastic pipe
*  Working pressure:  PN10 / PN16
*   Suit for Water, Neutral Liquids and Sewage

2. Features :

*   wide range of tolerance
*   corrosion resistance
*   allow angular deflection of +/- 4°

3.  List of Sizes :
 

Note: we accept your specific dimensions which are not included in the above list.

4. Project Cases :
 

5. Joint Product Series :

How do flexible couplings handle shaft misalignment in rotating equipment?

Flexible couplings are designed to handle shaft misalignment in rotating equipment, providing several key features that allow them to accommodate misalignment effectively. Here’s how they work:

• Angular Misalignment: Flexible couplings can handle angular misalignment, which occurs when the axes of the connected shafts are not perfectly aligned. The coupling’s flexible elements allow for slight angular deviation, ensuring that the torque can still be transmitted smoothly between the shafts.
• Parallel Misalignment: Parallel misalignment occurs when the connected shafts are not perfectly in line but run parallel to each other. Flexible couplings can compensate for this misalignment by utilizing their ability to flex or slide, allowing the shafts to remain connected while maintaining rotational integrity.
• Axial Misalignment: Axial misalignment refers to the situation where the connected shafts have a slight axial displacement. Some flexible couplings have specific designs to handle axial misalignment, allowing for limited movement along the axial direction without compromising the connection between the shafts.
• Double Flexing: Certain types of flexible couplings, such as the double-flexing couplings, can accommodate both angular and parallel misalignments simultaneously. These couplings use two sets of flexible elements to achieve this capability, providing a higher degree of misalignment compensation.

Overall, the flexibility of the coupling’s material and design allows it to bend, flex, or slide in response to the misalignment, reducing the stress on the connected equipment and ensuring smooth power transmission. By accommodating misalignment, flexible couplings help prevent premature wear, reduce vibration, and extend the service life of the rotating equipment.

Can flexible couplings be used in pumps, compressors, and fans?

Yes, flexible couplings can be used in pumps, compressors, and fans, and they are commonly employed in these types of rotating machinery. Flexible couplings offer several advantages that make them suitable for such applications:

• Misalignment Compensation: Pumps, compressors, and fans often experience misalignments due to various factors, such as thermal expansion, foundation settling, or component wear. Flexible couplings can accommodate angular, parallel, and axial misalignments, helping to maintain proper alignment between the driving and driven components.
• Vibration Damping: Flexible couplings help dampen vibrations in rotating machinery, which is essential for smooth operation and reduced wear on components. In pumps, compressors, and fans, vibration control is crucial to prevent premature failure and maintain reliable performance.
• Shock Load Absorption: These rotating machines may encounter shock loads during startup or shutdown, especially in reciprocating equipment like reciprocating pumps or compressors. Flexible couplings can absorb and mitigate the impact of such loads, protecting the connected equipment from damage.
• Reduced Maintenance: Flexible couplings with elastomeric elements or other self-lubricating features require minimal maintenance, leading to cost savings and reduced downtime in pumps, compressors, and fans.
• Energy Efficiency: Certain flexible coupling designs, such as beam couplings or certain elastomeric couplings, have low mass and inertia. This characteristic helps improve the energy efficiency of rotating machinery, which is particularly beneficial in large-scale pumps, compressors, and fans used in industrial applications.
• Adaptability: Pumps, compressors, and fans often have varying operating conditions and load profiles. Flexible couplings are adaptable to different operating environments, making them suitable for diverse applications.

In summary, flexible couplings offer several performance-enhancing features that make them well-suited for use in pumps, compressors, and fans. Their ability to accommodate misalignment, dampen vibrations, absorb shocks, and reduce maintenance requirements contributes to improved reliability, efficiency, and longevity of the connected rotating machinery.

Can you explain the different types of flexible coupling designs available?

There are several types of flexible coupling designs available, each with its unique construction and characteristics. These designs are tailored to meet specific application requirements and address different types of misalignment and torque transmission needs. Here are some of the most common types of flexible couplings:

• Jaw Couplings: Jaw couplings consist of two hubs with curved jaws and an elastomer spider placed between them. The spider acts as a flexible element and can compensate for angular and parallel misalignment. Jaw couplings are widely used in various industrial applications due to their simple design and effectiveness in handling misalignment and vibration damping.
• Disc Couplings: Disc couplings use thin metallic discs with a series of alternating slits and flanges to connect the shafts. The disc coupling design allows for excellent misalignment compensation, including angular, parallel, and axial misalignment. Disc couplings are known for their high torsional stiffness and precise torque transmission capabilities.
• Gear Couplings: Gear couplings consist of toothed hubs connected by an external sleeve with gear teeth. They are well-suited for applications with high torque and moderate misalignment. Gear couplings offer good misalignment compensation and high torque capacity, making them popular in heavy-duty industrial applications.
• Beam Couplings: Beam couplings use a single piece of flexible material, often a metal beam, to connect the shafts. The material’s flexibility allows for angular and axial misalignment compensation. Beam couplings are compact, lightweight, and provide low inertia, making them suitable for applications with high-speed requirements.
• Bellows Couplings: Bellows couplings consist of a bellows-like flexible structure that connects the two hubs. They can compensate for angular, parallel, and axial misalignment. Bellows couplings are known for their high torsional stiffness and ability to maintain constant velocity transmission.
• Oldham Couplings: Oldham couplings use three discs, with the middle one having a perpendicular slot. This design allows for angular misalignment compensation while transmitting torque between the hubs. Oldham couplings are often used when electrical isolation between shafts is required.

Each flexible coupling design has its strengths and limitations, and the choice depends on factors such as the application’s torque requirements, misalignment conditions, operating environment, and speed. Proper selection of the coupling type ensures optimal performance, efficiency, and reliability in various mechanical systems and rotating machinery.

editor by CX 2023-10-12