Product Description
Product Description
Dry couplings are the smart choice for the transportation of hazardous fluids.Compared with traditional couplings, it greatly improves the connection speed: during the unloading process, the built-in valve of the coupling is closed in advance, avoiding the liquid leakage or volatilization to the surrounding environment, reducing the chance of the operator coming into contact with the toxic medium, and safeguarding the safety of the personnel. The female end of the connection with the pipeline has an integrated swivel function, which reduces the fatigue damage of the pipeline.
Advantages:
√ Easy handling through high transmission ratio
√ Self-locking when fully connected
√ Integrated swivel joint
√ Lightweight
√ Minimal maintenance
√ Field-oriented function principles
√ Approval in accordance to WHG (DIBT-Approval is incl.)
√ Approval in accordance to ATEX Zone 1
Application:
– For fast and secure fluid transfer like lye and acids, fuels and oils, seawater, tap water, waste water, gas, superheated steam, compresses air, LPG, sludge, foodstuffs, pharmaceutical products between pipes, hoses, tanks and equipment.
– Widely used in power station construction, chemical and pharmaceutical industry, oil industry, offshore drilling, shipbuidling, loading/unloading(aircraft, tank trucks, filling stations, ships), tank cleaning, and food beverage industry.
Product Parameters
Dry Coupling Parameters:
| Product name | Dry Quick Break Coupling |
| Customized support | OEM, ODM |
| Place of Origin | ZheJiang , China |
| Technics | Casting |
| Materials | Stainless steel / Brass / AL, More Customized |
| Connection | Male and Female |
| Size | 3/4″-2″ |
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Cooperation
RUNXI’s products are exported to more than 30 countries, such as Iran, Russia, USA, The UK, DAE, Korea, Vietnam, Iraq, Singapore, Indonesia, Azerbaijan and Japan,and some African countries, etc. We have obtained high praise from clients domestic and abroad due to the excellent quality and competitive price.
At RUNXI & JIAYAO Company, emphasis is placed on human resource development as we believe in the Group’s philosophy “Organization Development through Self Development”. We have competent professionally qualified and experienced staff in each of our functions. The Company assists & encourages its employees for their professional qualifications and also invests in developing staff through in-house, out-sourced and international training.
Company Profile
JIAYAO CO., LTD.(For manufacturing) & HangZhou RUNXI INTERNATIONAL TRADE CO., LTD. (For export) are located in Yuying Street, Guangchuan Town, Jing County, HangZhou City, ZheJiang Province, China. we are a technology-based enterprise which is specialized in the area of R&D, marketing of multiply rubber products, rubber hose production line and telecommunication towers.
Our company specializes in Telecom towers, High pressure hoses, Hydraulic hoses, SAE & DIN series hoses, Drilling Rotary hose, Choke & Kill Line, Bop hoses, Suction and Discharge hose, Fabric hoses, Metal Flexible hose, Fireproof hose, Silicone hose, Hose Assembly, and Hose Production Line, etc.
Packaging & Shipping
Certifications
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white wearable woven bags. If you have legally registered patent,
we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages
before you pay the balance.
Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.
Q4. How about your delivery time?
A: Generally, it will take 20 to 60 days after receiving your advance payment. The specific delivery time depends
on the items and the quantity of your order.
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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.
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.
Advantages of Using Fluid Couplings in Power Transmission Systems
Fluid couplings offer several advantages in power transmission systems, making them well-suited for various industrial applications. Here are some of the key benefits:
- Smooth Power Transmission: Fluid couplings provide a smooth and gradual transfer of power from the engine or motor to the driven load. This helps to reduce shock and stress on the entire powertrain, leading to smoother operation and extended equipment life.
- Overload Protection: Fluid couplings act as a mechanical fuse in power transmission systems. When the load exceeds a certain threshold, the fluid coupling will slip, preventing excessive torque from reaching the driven load and protecting the machinery from damage.
- Torsional Vibration Damping: They effectively dampen torsional vibrations, reducing the risk of resonance and fatigue failure in the drivetrain. This is particularly important in applications with varying loads and speeds.
- No Mechanical Wear: Fluid couplings have no physical contact between the input and output components, resulting in minimal mechanical wear. This characteristic reduces maintenance and extends the service life of the coupling.
- Simple Design: The design of fluid couplings is relatively simple compared to other mechanical power transmission devices, leading to lower manufacturing costs and ease of maintenance.
- Energy Efficiency: In certain operating conditions, such as during startup or idling, fluid couplings can offer energy-saving benefits. They allow the engine to run at a constant speed while smoothly transmitting power to the load.
- Wide Range of Applications: Fluid couplings are versatile and can be used in various industrial machinery, including conveyors, crushers, pumps, fans, marine propulsion systems, and more.
Despite these advantages, fluid couplings also have limitations, such as a slight power loss due to slip and limited torque multiplication compared to torque converters. Therefore, the choice between a fluid coupling and other power transmission devices depends on the specific requirements of the application.
editor by CX 2024-05-09