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 Couplings in Marine Propulsion Systems
Yes, fluid couplings can be and are commonly used in marine propulsion systems. They offer several advantages that make them well-suited for such applications:
- Smooth Power Transmission: Fluid couplings provide smooth power transmission, which is beneficial for marine propulsion where abrupt changes in power delivery can be detrimental to the vessel’s stability and performance.
- Torque Limiting: In marine applications, fluid couplings can act as torque limiters, protecting the propulsion system and engine from sudden torque surges and overloads, which can occur during maneuvers or when encountering resistance in water.
- Impact Damping: The hydrodynamic principle of fluid couplings helps dampen impacts and shocks in the propulsion system, reducing wear and tear on the components and extending their lifespan.
- Load Sharing: In multi-engine marine setups, fluid couplings facilitate load sharing between engines, ensuring each engine contributes its share of power to achieve optimal propulsion efficiency.
- Start-up Performance: Fluid couplings enable controlled and gradual acceleration during start-up, which is crucial for large vessels and applications where sudden torque spikes could damage the drivetrain or disturb the vessel’s balance.
- Overload Protection: The fluid coupling’s ability to slip at high loads provides inherent overload protection to the marine propulsion system, safeguarding it against potential damage.
Fluid couplings used in marine applications are specially designed to withstand the harsh conditions of the marine environment, including exposure to saltwater, humidity, and vibration. They are available in various sizes and configurations to accommodate different marine vessel types and power requirements.
Overall, fluid couplings offer reliable and efficient power transmission solutions for marine propulsion systems, contributing to the safe and smooth operation of the vessel.
Role of Fluid Coupling in Torque Multiplication and Power Transfer
A fluid coupling is a mechanical device used to transmit power between two shafts without direct physical contact. It operates on the principles of fluid dynamics and hydrokinetics to enable torque multiplication and efficient power transfer. Here’s how a fluid coupling achieves these functions:
- Hydrodynamic Torque Converter: A fluid coupling is essentially a hydrodynamic torque converter. When the input shaft (driving shaft) rotates, it sets the transmission fluid inside the coupling in motion. The fluid experiences centrifugal forces, creating a high-velocity zone near the outer circumference and a low-velocity zone near the center. This velocity difference generates torque in the fluid coupling, allowing power to be transmitted from the input shaft to the output shaft (driven shaft).
- Torque Multiplication: One of the primary advantages of a fluid coupling is its ability to provide torque multiplication. During startup or when the load on the driven shaft is initially low, the fluid coupling slips to some extent, which allows the input shaft to rotate at a higher speed than the output shaft. This speed difference results in torque multiplication, enabling the fluid coupling to handle higher loads during acceleration or heavy starting conditions.
- Power Transfer Efficiency: Fluid couplings offer high power transfer efficiency due to the hydrodynamic nature of their operation. The smooth and continuous transmission of power through the fluid medium minimizes energy losses and mechanical wear, leading to more efficient power transmission compared to mechanical clutches or direct-coupling methods.
- Load Adaptability: Fluid couplings automatically adjust their slip to adapt to changing load conditions. When the load on the output shaft increases, the fluid coupling slips more, allowing the output shaft to slow down slightly and match the load demand. This load adaptability ensures smooth and stable power transfer even under varying operating conditions.
Fluid couplings are commonly used in applications where torque multiplication and smooth power transfer are essential. They find widespread use in heavy machinery, mining equipment, conveyors, crushers, marine propulsion systems, and many other industrial applications. By efficiently transferring power while providing torque multiplication, fluid couplings help optimize the performance and longevity of power transmission systems.
Proper selection of the fluid coupling based on the application’s torque and power requirements is crucial to ensure optimal torque multiplication and power transfer. Additionally, regular maintenance and monitoring of the fluid coupling’s condition are essential to maintain its efficiency and reliability over time.
Controlling Torque and Rotational Speed with Fluid Couplings
A fluid coupling plays a crucial role in controlling torque and rotational speed in power transmission systems. The principle behind its operation allows for smooth torque transmission while offering some level of speed control:
- Torque Transmission: When power is applied to the input side (also known as the driving side) of the fluid coupling, the impeller starts to rotate and accelerates the transmission fluid inside the housing. The kinetic energy of the moving fluid creates a rotating flow pattern that transfers torque to the output side (also known as the driven side) of the coupling. This torque transfer enables the connected machinery or equipment to start smoothly without any shock loading.
- Slip: In a fluid coupling, there is always a slight difference in speed between the input and output sides due to the viscous nature of the fluid. This speed difference is known as slip. The slip allows the fluid coupling to protect the connected components from sudden torque spikes and vibrations. If the output side experiences an abrupt load increase or jam, the slip absorbs the excess torque, preventing damage to the drivetrain.
- Speed Control: While fluid couplings are not as efficient in speed control as variable-speed drives, they do offer some inherent speed control characteristics. The amount of slip in the fluid coupling affects the output speed relative to the input speed. By adjusting the fill level of the fluid coupling or using different fluid viscosities, it is possible to fine-tune the speed at which the output shaft rotates. However, it’s important to note that this speed control is limited compared to other speed control mechanisms.
Overall, fluid couplings provide a reliable and efficient means of controlling torque during power transmission. Their ability to dampen torsional vibrations and provide overload protection makes them suitable for various applications where smooth torque transfer and protection against shock loads are essential.
editor by CX 2024-04-29
