Product Description

TVA Series Constant Torque Hydraulic Fluid Coupling

Application:

It is a hydraulic component of transmission of a kind of power type to the hydraulic coincidence machine of square type. Because its efficiency is high, the structure is simple, can drive load to start steadily , Improve performance of starting, improve kinetic energy strength, have protect function, can isolate sprain shaking and a, The load of balanced every electrical machinery in many drives chain of electrical machinery, And reduce the impact electric current of the electric netting, So used widely in some aspect, such as mining machinery, chemical industry, metallurgical industry, food, architecture, traffic,etc…

The characteristic and operation principle:

There are YOX type and TVA type 2 series in limit hydraulic coincidence machine of square type in our factory produces, YOX type is formed from initiative and passive parts mainly. The initiative ones include complement, front half is connected with the axle, latter half is connected with the axle, elasticity block,pump wheels and outer cover. passive parts Include the axle and turbine mainly The initiative link with former motives and some passive parts link with working machine.

The structure of TVA type is the same as YOX type basically, but the airtight pattern is adopted outside airtight, Have increased the structure of dismantling and putting.

The torsion of the original motive is transmitted by the job liquid in the coincidence machine. Pump change the kinetic energies into liquid mechanical energies . Turbine turn the kinetic energy of the liquid into the mechanical energy. The axle drives load through exporting. There is not mechanical connection between the wheel of pump and turbine.

Our products range:

+YOTCGP series Variable speed fluid coupling
+YOTCG series Variable speed fluid coupling
+YOTCHP series Variable speed fluid coupling
+YOTCHZ series Variable speed fluid coupling
+YOTCQ series Variable speed fluid coupling
+YOTCHF series Variable speed fluid coupling
+Constant fluid coupling, such YOX, TVA series.

Sample Product Photos:

Production Equipment Photos:

Mainly Cooperation Customer:

Raw material yard, ore beneficiation, sinter plant and pellet, coke oven plant, iron making plant, steel making plant.

Successful Projects Feedback:

Note: We also accept the repair work projects, and provide spare parts for variable speed fluid coupling. 
If you have any related projects need our proposal, feel free to contact us.
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fluid coupling

Fluid Coupling and Smooth Power Transmission during Starting and Stopping

A fluid coupling is designed to facilitate smooth power transmission during the starting and stopping phases of machinery and equipment. It achieves this by utilizing the principle of hydrodynamic torque transmission through a fluid medium.

Starting Phase: When power is initially supplied to the input shaft of the fluid coupling, the impeller (also known as the pump) begins to rotate, imparting energy to the fluid inside the coupling. As the fluid gains kinetic energy, it starts moving outward towards the turbine (also called the driven element) due to centrifugal force.

The kinetic energy of the moving fluid causes the turbine to start rotating, transmitting torque to the output shaft. During this starting phase, there is a slight time lag, known as the “slip,” between the impeller and the turbine. However, as the fluid coupling reaches its operational speed, the slip reduces, and the turbine matches the speed of the impeller, resulting in smooth power transmission from the input to the output shaft.

The fluid coupling’s ability to control the slip ensures a gradual and controlled acceleration of the driven equipment, minimizing stress on the drivetrain components and preventing sudden shock loads.

Stopping Phase: When power to the input shaft is reduced or cut off, the impeller slows down, and the kinetic energy in the fluid decreases. As a result, the fluid moves away from the turbine towards the center of the coupling, reducing the torque transmission between the input and output shafts.

This characteristic of the fluid coupling aids in smoothly decelerating the connected equipment, preventing sudden jolts or jerks during the stopping process. The ability to control the slip during deceleration ensures that the driven machinery comes to a gradual and controlled stop, enhancing safety and protecting the equipment from damage.

The combination of hydrodynamic torque transmission and the ability to control the slip makes fluid couplings ideal for applications where smooth power transmission during starting and stopping is essential. Industries such as mining, construction, metal processing, marine propulsion, and power generation benefit from the reliable and efficient performance of fluid couplings in various machinery and equipment.

fluid coupling

Fluid Couplings in Pumps and Compressors

Yes, fluid couplings can be effectively used in pumps and compressors to optimize their operation and improve overall efficiency. Here’s how fluid couplings are beneficial in these applications:

1. Smooth Starting: Fluid couplings provide a soft-start capability, which is particularly advantageous for pumps and compressors. During startup, the fluid coupling allows the pump or compressor to gradually reach the desired operating speed, reducing mechanical stress on the equipment and preventing sudden torque spikes.

2. Overload Protection: Pumps and compressors may experience sudden changes in load due to variations in fluid demand or system pressure. A fluid coupling acts as a torque limiter and protects the connected equipment from damage during such overload conditions. It slips and absorbs excess torque, preventing mechanical failures and downtime.

3. Torque Control: Fluid couplings enable precise control over the torque transmitted to the pump or compressor. This feature allows operators to adjust the output speed and torque to match the specific requirements of the application, ensuring optimal performance and energy efficiency.

4. Vibration Damping: The inherent damping properties of fluid couplings help in reducing vibrations in pump and compressor systems. This not only extends the life of the mechanical components but also enhances the reliability of the entire system.

5. Energy Efficiency: By eliminating the need for direct mechanical connections and providing smooth acceleration, fluid couplings contribute to energy savings in pumps and compressors. The reduction in shock loads and vibrations leads to lower energy consumption and improved overall efficiency.

6. Heat Dissipation: Continuous operations in pumps and compressors can generate heat, potentially affecting the equipment’s performance. Fluid couplings have the ability to absorb and dissipate heat, maintaining proper operating temperatures and ensuring consistent performance.

7. System Protection: In addition to overload protection, fluid couplings also protect pumps and compressors from torque fluctuations, which can occur during transient conditions. This protection prevents mechanical damage and enhances the longevity of the equipment.

Overall, fluid couplings offer several advantages in pump and compressor applications, including smooth starting, overload protection, torque control, vibration damping, energy efficiency, heat dissipation, and system protection. These benefits make fluid couplings a valuable component in optimizing the performance and reliability of pumps and compressors in various industrial settings.

fluid coupling

Examples of Industries Using Fluid Couplings

Fluid couplings find applications in various industries where smooth power transmission and torque control are required. Some common industries that commonly use fluid couplings include:

  • Mining: Fluid couplings are used in mining equipment such as conveyors, crushers, and excavators to provide controlled startup and overload protection.
  • Construction: Construction machinery like cranes, loaders, and piling rigs use fluid couplings for efficient power transmission and reduced shock loads.
  • Marine: Fluid couplings are employed in marine propulsion systems to optimize engine performance and protect against sudden load changes.
  • Steel and Metal Processing: Industries dealing with metal processing use fluid couplings in rolling mills, coilers, and metal forming machines for soft start and overload protection.
  • Pulp and Paper: Pulp and paper mills utilize fluid couplings in various equipment, such as chippers, conveyors, and pumps, for smooth power transmission.
  • Automotive: In automotive applications, fluid couplings can be found in torque converters, which provide smooth torque transmission in automatic transmissions.
  • Energy and Power Generation: Fluid couplings are used in power plants for applications like fans, pumps, and turbines to control power transmission and reduce mechanical stress during startup.
  • Wastewater Treatment: Fluid couplings are used in wastewater treatment plants for applications like aerators and pumps, ensuring efficient power transmission and equipment protection.
  • Food and Beverage: Industries dealing with food processing and beverage production use fluid couplings in various applications to ensure gentle power transmission and prevent sudden load shocks.
  • Chemical and Petrochemical: Fluid couplings are used in pumps and mixers in chemical and petrochemical processing to control torque and protect equipment.

These examples illustrate the versatility of fluid couplings and their widespread use across diverse industries to enhance the efficiency and safety of power transmission systems.

China supplier Tva Series Constant Torque Hydraulic Fluid Coupling  China supplier Tva Series Constant Torque Hydraulic Fluid Coupling
editor by CX 2024-03-30