Product Description
Densen customized fluid coupling,constant fluid coupling,fluid coupling yox
| Product Name | Fluid coupling,constant fluid coupling,fluid coupling yox |
| DN mm | 16~190mm |
| Rated Torque | 40~25000 N·m |
| Allowable speed | 4500~200 kN·m |
| Material | 45#steel |
| Application | Widely used in metallurgy, mining, engineering and other fields. |
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Equipment
Application Case
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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Impact of Fluid Coupling on the Overall Reliability of a Power Transmission System
A fluid coupling can significantly contribute to the overall reliability of a power transmission system in various ways:
- Smooth Power Transmission: Fluid couplings facilitate smooth power transmission between the driving and driven components, minimizing shocks and vibrations during startup and operation. This reduces the risk of sudden failures or damages to connected equipment.
- Overload Protection: Fluid couplings offer inherent overload protection by allowing controlled slip during sudden load changes or overloads. This protects the system from excessive stresses and prevents damage to the motor and driven machinery.
- Reduced Mechanical Wear: The smooth operation of fluid couplings reduces mechanical wear on connected components, such as gearboxes, belts, and chains. This results in longer service life and decreased maintenance requirements.
- Increased Equipment Life: By reducing stress and wear on the entire power transmission system, fluid couplings can extend the service life of motors, gearboxes, and other components. This enhances the overall reliability of the system over an extended period.
- Enhanced System Safety: The ability of fluid couplings to protect against shock loads and overloads enhances the safety of personnel working with or near the machinery. It prevents sudden and unpredictable movements, reducing the risk of accidents and injuries.
- Stable Performance: Fluid couplings maintain a constant speed ratio between the driving and driven shafts, ensuring stable and predictable performance of the power transmission system. This predictability aids in maintaining process stability and efficiency.
Incorporating a properly sized and selected fluid coupling into a power transmission system can improve its reliability, reduce downtime, and prevent costly breakdowns. Regular maintenance and monitoring of the fluid coupling also play a crucial role in ensuring long-term reliability and trouble-free operation.
Cost Implications of Using Fluid Couplings in Comparison to Other Power Transmission Methods
The cost implications of using fluid couplings in power transmission depend on various factors, including the application requirements, the size of the system, and the operational conditions. While fluid couplings offer several advantages, they may have different cost considerations compared to other power transmission methods like mechanical clutches, VFDs (Variable Frequency Drives), and direct mechanical drives.
1. Initial Investment:
The initial cost of a fluid coupling can be higher than that of a mechanical clutch or a direct mechanical drive. Fluid couplings contain precision components, including the impeller and turbine, which can impact their initial purchase price.
2. Maintenance Costs:
Fluid couplings are generally considered to have lower maintenance costs compared to mechanical clutches. Mechanical clutches have wear and tear components that may require more frequent replacements, leading to higher maintenance expenses over time.
3. Energy Efficiency:
Fluid couplings are highly efficient in power transmission, especially during soft-start applications. Their ability to reduce shock loads and provide a smooth acceleration can result in energy savings and operational cost reductions.
4. Space and Weight:
Fluid couplings are usually more compact and lighter than some mechanical clutches, which can be advantageous in applications with space constraints or weight limitations.
5. Specific Application Considerations:
The suitability and cost-effectiveness of fluid couplings versus other power transmission methods can vary based on specific application requirements. For example, in soft-start applications, fluid couplings may be the preferred choice due to their ability to reduce mechanical stress and protect connected equipment.
6. Lifespan and Reliability:
While the initial cost of a fluid coupling might be higher, their longevity and reliability can lead to lower overall life cycle costs compared to other power transmission methods.
In conclusion, the cost implications of using fluid couplings in power transmission depend on the particular application and the total cost of ownership over the equipment’s lifespan. Although fluid couplings may have a higher initial investment, their long-term reliability, energy efficiency, and lower maintenance costs can make them a cost-effective choice in many industrial applications.
Key Components of a Fluid Coupling and Their Functions
A fluid coupling consists of several essential components that work together to transfer torque and facilitate smooth power transmission. The key components and their functions are as follows:
- Impeller: The impeller is the primary input element of the fluid coupling. It is directly connected to the driving shaft and rotates with it. The impeller’s function is to churn and circulate the fluid inside the coupling, creating a flow that generates a hydrodynamic torque.
- Runner/Turbine: The runner, also known as the turbine, is the output element of the fluid coupling. It is connected to the driven shaft and rotates with it. As the fluid from the impeller flows onto the runner, it causes the runner to rotate and transmit torque to the driven load.
- Fluid: The fluid, typically hydraulic oil, is the medium that transmits torque from the impeller to the runner. It fills the space between the impeller and the runner and allows the torque transfer to take place through hydrodynamic action.
- Filler Plug: The filler plug is used to add or drain the fluid from the fluid coupling. It allows for the adjustment of fluid levels, which can influence the coupling’s performance characteristics.
- Seal Ring: The seal ring prevents the fluid from leaking out of the fluid coupling and ensures that the coupling operates with maximum efficiency and minimal losses.
- Bearing: The bearing provides support for the input and output shafts, allowing them to rotate smoothly. Bearings are critical for maintaining alignment and reducing friction within the fluid coupling.
These key components work together to create a hydrodynamic torque transfer, enabling the fluid coupling to smoothly transmit power and torque from the driving shaft to the driven shaft without any physical contact between the two shafts.
editor by CX 2024-04-25