Product Description
DeDensen Customized fluid coupling for conveyor, hydraulic gear fluid coupling,limited torque fluid coupling
| 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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Limitations and Disadvantages of Using Gear Couplings
While gear couplings offer many advantages, they also have some limitations and disadvantages that should be considered when selecting coupling solutions for specific applications:
- Cost: Gear couplings can be more expensive compared to other types of couplings, especially when precision machining or specialized materials are required. The initial investment might be higher, but the long-term benefits may outweigh the cost.
- Size and Weight: Gear couplings are generally larger and heavier than some other coupling types. This can impact the overall size and weight of the machinery, which may be a concern in applications with limited space or weight restrictions.
- Maintenance: Gear couplings require regular maintenance, including lubrication and periodic inspection to ensure proper functioning. Neglecting maintenance can lead to premature wear and failure.
- Backlash: Like other gear mechanisms, gear couplings may have some inherent backlash due to the clearance between gear teeth. This slight play can affect precision applications where accurate motion transmission is critical.
- Noise and Vibration: Gear couplings can generate more noise and vibration compared to flexible couplings, especially at higher speeds. This can be a concern in applications that require low-noise operation.
- Misalignment Tolerance: While gear couplings can handle moderate misalignment, they may not be as forgiving as flexible couplings in accommodating significant shaft misalignment.
Despite these limitations, gear couplings remain a popular choice for many applications, particularly in heavy-duty industrial settings where they excel in transmitting high torque and handling demanding conditions. Proper selection, installation, and maintenance can help mitigate some of the disadvantages, making gear couplings a reliable choice for power transmission in various industries.
editor by CX 2024-03-27