China supplier Customized Double Disc Clamp High Torque Coupling Shaft Motor Coupling

Product Description

Customized double disc clamp high torque coupling shaft motor coupling

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Equipment

Typical case of diaphragm coupling applied to variable frequency speed control equipment

JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant

According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.

It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.

Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.

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Comparison of Disc Couplings with Other Coupling Types

When comparing disc couplings with other coupling types like jaw couplings and elastomeric couplings, several factors come into play:

• Flexibility: Disc couplings offer high flexibility and misalignment compensation, similar to elastomeric couplings, making them suitable for applications with angular, axial, and parallel misalignment.
• Torsional Stiffness: Jaw couplings are known for their high torsional stiffness, which is suitable for precision applications. Disc couplings offer a balance between flexibility and stiffness.
• Misalignment Compensation: Disc couplings excel in accommodating misalignment, whereas elastomeric couplings and jaw couplings are better suited for lower degrees of misalignment.
• Vibration Damping: Elastomeric couplings provide excellent vibration damping due to their rubber elements. Disc couplings can also dampen vibrations to some extent.
• Compactness: Jaw couplings and elastomeric couplings are relatively compact, making them suitable for space-constrained applications. Disc couplings are larger in size but offer higher torque capacity.
• Torque Capacity: Disc couplings generally have higher torque capacity compared to elastomeric couplings and jaw couplings.
• Installation and Maintenance: Disc couplings and elastomeric couplings are typically easier to install and require less maintenance compared to jaw couplings.
• Material Options: All three coupling types are available in various materials, allowing for compatibility with different environments.

The choice between disc couplings, jaw couplings, and elastomeric couplings depends on the specific requirements of the application, including torque, misalignment, vibration, and stiffness considerations. Each coupling type has its strengths, and selecting the right one involves evaluating these factors to achieve optimal performance and reliability.

Impact of Number and Configuration of Disc Packs on Coupling Performance

The number and configuration of disc packs in a disc coupling have a significant impact on its overall performance. Here’s how:

• Number of Disc Packs: Increasing the number of disc packs can enhance the coupling’s torque capacity and stiffness. This allows it to handle higher levels of torque while maintaining its flexibility to accommodate misalignment.
• Configuration: Different configurations, such as single-flex, double-flex, or multiple-flex, offer varying degrees of angular misalignment compensation and torsional stiffness. Single-flex configurations provide greater misalignment capacity, while double-flex configurations offer improved torsional stiffness.

Choosing the appropriate number and configuration of disc packs depends on the specific application requirements:

• Torque Transmission: Applications with high torque demands may benefit from a higher number of disc packs to ensure reliable torque transmission.
• Misalignment Compensation: Applications with moderate misalignment may opt for configurations that offer higher angular misalignment compensation.
• Torsional Stiffness: For applications where torsional stiffness is critical, a configuration with multiple-disc packs may be preferred.
• Space Limitations: Consider the available space and coupling dimensions when choosing the number and configuration of disc packs.
• Dynamic Behavior: Depending on the application’s dynamic behavior and vibration characteristics, the appropriate configuration can be selected to minimize resonances.

Ultimately, the selection of the number and configuration of disc packs in a disc coupling should be based on a thorough understanding of the application’s torque, misalignment, and stiffness requirements to optimize coupling performance and reliability.

Challenges and Solutions for Misaligned Disc Couplings

Misalignment in disc couplings can lead to several challenges, but these issues can be effectively addressed using appropriate measures:

• Reduced Efficiency: Misalignment can cause increased friction and wear, leading to energy losses and reduced coupling efficiency. Regular maintenance and proper alignment can help mitigate this issue.
• Vibration and Noise: Misalignment often results in vibrations and noise in the machinery. This can impact the overall performance of the system and cause discomfort to operators. Ensuring precise alignment and using vibration-damping solutions can minimize these effects.
• Premature Wear: Disc couplings experiencing misalignment may wear out prematurely due to uneven loading and stress concentrations. Optimal alignment and using coupling models designed to handle misalignment can extend the coupling’s lifespan.
• Imbalanced Loads: Misalignment can lead to imbalanced loads on the coupling discs, causing uneven stress distribution. This can lead to fatigue and failure. Using spacer elements between the discs and proper alignment can distribute the loads more evenly.
• Reduced Accuracy: In applications requiring precision positioning, misaligned disc couplings can result in inaccurate measurements or positioning. Implementing accurate alignment practices and selecting couplings designed for precise applications can mitigate this challenge.
• Temperature Rise: Misalignment-induced friction generates heat, leading to temperature rise in the coupling and adjacent components. This can potentially affect the material properties and lead to premature wear. Proper alignment and selecting appropriate lubrication can manage temperature rise.

Addressing misalignment challenges involves a combination of careful installation, routine maintenance, alignment checks, and using coupling designs that offer flexibility and resilience to misalignment. Regular monitoring and addressing misalignment issues promptly can help ensure the longevity and optimal performance of disc couplings.

editor by CX 2024-01-12