Product Description
Densen Customized fluid coupling for conveyor, hydraulic gear fluid coupling,limited torque fluid coupling
| Product Name | Densen Customized fluid coupling for conveyor, hydraulic gear fluid coupling,limited torque fluid coupling |
| DN mm | 225~1312mm |
| Rated Torque | 2000~11950000N·m |
| Allowable speed | 1500~3000 RPM |
| Material | 35CrMo/ZG270/45# steel/Aluminum alloy |
| Application | Widely used in metallurgy, mining, engineering and other fields. |
Company Information
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.
Other Application Case
Spare parts
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Handling Overloads and Stall Conditions in Fluid Couplings
A fluid coupling is designed to handle overloads and stall conditions in power transmission systems. When an overload or stall occurs, the fluid coupling utilizes its unique operating principle to protect the drivetrain and the connected machinery:
- Slip Feature: One of the key characteristics of a fluid coupling is its ability to slip at high torque loads. When an overload situation arises, the fluid coupling allows some relative motion between the input and output sides, known as slip. This slip absorbs the excess torque and prevents it from being transferred to the driven equipment, effectively protecting it from damage.
- Fluid Circulation: During normal operation, the fluid inside the coupling circulates smoothly between the impeller and turbine, transmitting torque with minimal losses. However, when an overload or stall condition occurs, the fluid circulation may become turbulent, generating heat in the process. This heat dissipation helps in absorbing and dissipating the excess energy, preventing the transmission system from experiencing sudden stress.
- Automatic Reconnection: After an overload or stall condition, once the excess torque is dissipated through slip and heat, the fluid coupling automatically reconnects the input and output sides, resuming the power transmission. This automatic reconnection ensures that the system returns to normal operation once the overload situation is resolved.
- Sturdy Construction: Fluid couplings are designed with robust and durable materials to withstand high torque and thermal stresses during overload conditions. The strong construction ensures that the fluid coupling remains reliable and operational even after multiple overload events.
Overall, a fluid coupling’s ability to handle overloads and stall conditions makes it a reliable and essential component in various industrial applications. By providing overload protection and slip characteristics, fluid couplings help prevent costly damage to equipment, increase operational safety, and contribute to the longevity of the entire power transmission system.
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.
Maintenance Practices for Fluid Couplings
Regular maintenance is crucial to keep a fluid coupling in good condition and ensure its longevity. Here are the key maintenance practices:
- Fluid Level Checks: Regularly inspect the fluid level in the fluid coupling. Maintain the fluid level within the recommended range specified by the manufacturer.
- Fluid Quality: Monitor the quality of the fluid in the fluid coupling. Check for any signs of contamination, degradation, or discoloration. If the fluid shows signs of wear, replace it following the manufacturer’s guidelines.
- Fluid Replacement: As part of routine maintenance, consider replacing the fluid periodically, even if there are no visible signs of wear. Fluid replacement intervals may vary based on the application and operating conditions.
- Lubrication: Ensure proper lubrication of the fluid coupling components, including bearings and seals, as specified by the manufacturer.
- Inspections: Regularly inspect the fluid coupling for any signs of leaks, damage, or unusual noises during operation. Address any issues promptly to prevent further damage.
- Alignment: Verify that the fluid coupling is correctly aligned with the connected equipment. Misalignment can lead to premature wear and reduced performance.
- Coupling Bolts: Check and tighten the coupling bolts as needed to maintain proper coupling integrity.
- Temperature Monitoring: Monitor the operating temperature of the fluid coupling. Elevated temperatures may indicate an issue that needs attention.
- Vibration Analysis: Periodically perform vibration analysis to detect any abnormal vibrations that could indicate potential problems.
- Manufacturer Guidelines: Follow the maintenance guidelines and recommendations provided by the fluid coupling manufacturer.
By adhering to these maintenance practices, you can extend the life of your fluid coupling, improve its reliability, and minimize the risk of unexpected failures.
editor by CX 2023-11-16
