Product Description
Densen customized fluid coupling for Rolling mill,Conveyor hydraulic coupling,flexible coupling for construction machiner
| Product Name | Fluid coupling for Rolling mill,Conveyor hydraulic coupling,flexible coupling for construction machinery |
| DN mm | 16~190mm |
| Rated Torque | 40~25000 N·m |
| Allowable speed | 4500~200 kN·m |
| Material | 45#steel,aluminum |
| Application | Widely used in metallurgy, mining, engineering and other fields. |
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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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Why Choose Us
1. One stop service:
We have 5 own factories and 50+ sub-contractors located in different areas of China to offer you one-stop manufacturing and purchasing services to help you save time and reduce procurement cost.
2. Your eyes in China:
Our commitment to quality permeates from quoting, scheduling, production, inspection to deliver into your warehouse, our QC team will remark the errors if has on QC documents for your checking before delivery as your 3rd party.
3. Your R&Dconsultant:
With professional engineers team and 29 years manufacture experience ,we would help you work out problems during new parts’ development, optimize design and recommend the most cost-effective solution.
4. Your Emergency Solver:
With continued grown factories team and our QC teams located in different areas, if customers need to expedite the delivery, we would be able to adopt another factory to produce together immediately.
5. Quality Guaranty:
No matter how long time the products delivered, we are responsible for the quality. In case the products be rejected, we would replace them or return fund according to your demand without hesitation
FAQQ1. Are you a manufacturer or a trader?
Manufacture, we have 5 own foundries, 4 in ZheJiang Province, 1 in ZHangZhoug Province
Q2. Do you have MOQ request?
1 pcs per order is ok with us , unless material is seldom used.
Q3. If I only have a sample,without drawings, can you quote then manufacture for me?
Just send us the sample, we would have the sample simulated and measured by professional equipment then issue formal drawings for
you , at the same time, we could help you optimize the design according to your demand and related processes’ feasibility.
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Can fluid drive couplings handle both angular and axial misalignments simultaneously?
Yes, fluid drive couplings are designed to handle both angular and axial misalignments simultaneously. The hydrodynamic principle used in fluid drive couplings allows them to accommodate misalignments between the driving and driven shafts in multiple directions.
Angular misalignment occurs when the axes of the driving and driven shafts are not perfectly parallel. Axial misalignment, on the other hand, refers to the misalignment of the two shafts along their common axis. In many real-world applications, both types of misalignment may exist.
Fluid drive couplings utilize a hydraulic fluid film to transmit torque between the impellers (pump and turbine) of the coupling. This fluid film creates a flexible and lubricating barrier between the impellers, enabling them to rotate independently of each other. As a result, the coupling can accommodate angular misalignment by allowing the impellers to tilt and follow the misaligned shafts’ angular positions.
Simultaneously, the fluid film also permits axial movement between the impellers, allowing the coupling to compensate for axial misalignment. When axial misalignment occurs, the fluid film cushions the impellers and permits axial displacement to occur without excessive stress or wear on the coupling.
The ability of fluid drive couplings to handle both angular and axial misalignments is one of their significant advantages over rigid mechanical couplings. Mechanical couplings, such as gear couplings or rigid couplings, are more sensitive to misalignments and may lead to premature wear, vibration, and increased stress on the connected machinery in case of misalignment.
However, it is essential to note that while fluid drive couplings can tolerate a certain degree of misalignment, excessive misalignment can still lead to reduced performance and increased wear over time. Regular monitoring of the coupling’s condition and addressing any significant misalignment issues is crucial to maintaining optimal performance and ensuring the longevity of the fluid drive coupling and the power transmission system it serves.
Can fluid drive couplings be used in applications requiring continuous variable speed control?
Yes, fluid drive couplings can be used in applications requiring continuous variable speed control. The unique design and operating principle of fluid drive couplings allow them to provide smooth and precise speed regulation over a wide range of operating speeds.
Fluid drive couplings utilize a hydrodynamic torque transmission mechanism, where the amount of torque transmitted between the driving and driven elements is determined by the amount of fluid present in the coupling’s working chamber. By adjusting the fluid level, the coupling’s output speed can be continuously varied.
The fluid level in the coupling can be controlled manually, automatically, or electronically, depending on the specific application requirements. Here are some methods used to achieve continuous variable speed control with fluid drive couplings:
- Manual Adjustment: In some applications, the fluid level in the coupling can be adjusted manually by operators. By changing the fluid level, the speed of the driven element can be continuously controlled, providing versatility in the system’s operation.
- Hydraulic Control: Certain fluid drive couplings incorporate hydraulic control systems to adjust the fluid level automatically. These control systems respond to changes in the driving element’s speed or load and modulate the fluid level to maintain the desired speed at the driven element.
- Electrical Control: Advanced fluid drive couplings can be equipped with electrical control systems that use sensors and feedback loops to precisely regulate the fluid level. This enables accurate and automated speed control based on the system’s requirements.
Continuous variable speed control offered by fluid drive couplings is advantageous in various applications, including conveyor systems, industrial mixers, pump drives, and certain types of marine propulsion. The ability to smoothly adjust the speed helps optimize energy consumption, reduce wear and tear on equipment, and enhance overall process efficiency.
Additionally, fluid drive couplings provide overload protection, which is crucial in applications requiring variable speed control. When the system experiences sudden load fluctuations or overloads, the fluid drive coupling can slip to protect the connected machinery from damage.
It is important to select the appropriate fluid drive coupling model with the required variable speed control capabilities based on the specific application’s speed range, torque demands, and control requirements. Working closely with the coupling manufacturer and understanding the system’s operating conditions will ensure the optimal coupling is chosen to achieve smooth and efficient variable speed control.
What are the key design considerations when using fluid drive couplings in power transmission systems?
When incorporating fluid drive couplings into power transmission systems, several key design considerations should be taken into account to ensure efficient and reliable operation. These considerations include:
- Torque and Power Ratings: Determine the required torque and power ratings of the fluid drive coupling to match the demands of the power transmission system. The coupling should be capable of handling the maximum torque and power output without exceeding its capacity.
- Speed Range: Evaluate the speed range of the power transmission system and ensure that the selected fluid drive coupling can operate effectively across this range. Consider the maximum and minimum speeds the coupling can handle to avoid operational limitations.
- Fluid Type and Viscosity: Select the appropriate hydraulic fluid type and viscosity based on the operating conditions, temperature range, and load requirements of the power transmission system. The fluid should maintain its properties within the system’s temperature and pressure limits.
- Slip Control: Consider whether slip control is necessary for the application. Some systems may require controlled slip to protect against sudden overloads or to enable smoother start-ups.
- Environmental Conditions: Evaluate the environmental factors that may impact the fluid drive coupling’s performance, such as temperature variations, humidity, and the presence of contaminants. Choose a coupling with suitable sealing and protection against external elements.
- Overload Protection: If the power transmission system is susceptible to overloads or shock loads, select a fluid drive coupling that offers effective overload protection to prevent damage to the system components.
- Space Constraints: Consider the available space for installing the fluid drive coupling. Some couplings may have specific dimensional requirements that need to be accommodated within the system design.
- Misalignment Tolerance: Assess the potential misalignment between the driving and driven shafts and choose a fluid drive coupling that can tolerate the expected misalignment to prevent excessive wear and failure.
- Mounting and Alignment: Ensure proper mounting and alignment of the fluid drive coupling within the power transmission system. Correct alignment is crucial to prevent premature wear and ensure efficient power transfer.
- Application Specifics: Consider the unique requirements of the power transmission system, such as start-up frequency, duty cycle, and load variations. These specifics may influence the choice of fluid drive coupling type and configuration.
Properly addressing these design considerations will result in an optimized power transmission system with a fluid drive coupling that meets the performance, safety, and efficiency requirements of the application. Collaboration with experienced fluid power engineers and coupling manufacturers is beneficial in selecting the most suitable fluid drive coupling and ensuring its proper integration into the power transmission system.
Regular maintenance and monitoring of the fluid drive coupling’s performance are essential to identify any potential issues early and ensure the continued reliable operation of the power transmission system.
editor by CX 2024-04-12
