Product Description
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Quick Details
| Material: | Copper | Technics: | Forged | Type: | Coupling |
| Place of Origin: | QIngdao, China (Mainland) | Model Number: | AT 21 | Brand Name: | AT |
| Connection: | Welding | Shape: | Equal | Head Code: | Round |
| Certificates: | CE ISO | Usage: | Plumbing & CHINAMFG System |
Packaging & Delivery
| Packaging Details: | Export netural packing (PCV bag,inner white box,master carton, Pallet.) or Cutomized packing as request. |
| Delivery Detail: | 30-45 days after receiving deposit |
Specifications
1.Quality Priority
2. OEM service
3. reasonable price
4. oversea service support
5. 321 stainless steel
ABOUT US:
As your one-stop source, AT PRECAST,we design, manufacturer and distribute precast concrete accessories including the Lifting Systems and Anchoring systems Coil and Ferrule Inserts. for Concrete and Prefabricated area.
As a leader in developing concrete accessory products, our main goal is to produce products that are safer, faster and more cost efficient.
With more than totally 50 years working experience, our entire staff is dedicated to provide you with the best customer service and competitive prices. Our sales force are able to answer your questions quickly and offer you technical support .
Assurance:
100% quality manufacturing.
We guarantee that our products meet your supplied specifications
Extremely competitive pricing
Delivery to your port or front door
4 —- 8 week lead times
We handle all paperwork
Partial container orders
Flexible payment options
Unique tooling options
Full range of packaging options from bulk to retail ready
Complete testing services available
FAQs:
1. Where is your location?
We are located in HangZhou City of China and are closed to Airport. It takes 30minuts by car from Liuting Airport our company.
2. How long has the company been established?
AT INDUSTRY was established in 2009. There is 6 years exporting experiences.
3. How many employees do you have?
Administration / sales 4
Engineering / design as our partner 8
Production as our partners 120
Quality assurance / inspection 10
4. Which countries do you export to?
U.S.A, Germany, France, Italy, UK, Brazil, Middle east of Asia, Thailand,
5. What proportion of your goods are exported?
100% of our production are exported to all over the world.
6. How long does it take to receive samples?
a) Pattern:30-45days after order
b) Sample:30days after pattern finishing.
c) The lead time is the general production period and does not include the transportation time.
7. New product development process
Got tooling order and sample order with 50% deposit—Hold a meeting with the relation dept. to ensure the developing schedule—Design pattern, fixture and gauge and making them in our house—mold steel buying—Machining—Inspection—Send out the sample with initial inspection report.
8. How long is the manufacturing lead time?
Mass Production: 90days after sample approval by yours.
The lead time is the general production period including the transportation time.
We could make some special production arrangement effectively if customer has urgent need.
9. What basis can we buy goods?
We generally offer customers prices FOB& CIF (Carriage, Insurance & Freight). The CIF includes the freight cost to your nominated sea port.
We do provide clearance of goods which needs to be handled by a local freight forwarder.
All local costs and taxes are the responsibility of the buyer. We are happy to offer advisement on shipping if required.
10. What are the payment terms?
Payment terms are negotiable and will improve for long term customers.
During the initial stages, we request 50% of tooling fee in advance with the balance payable on acceptance of samples.
Production orders can be negotiable. We prefer 50% deposit and the balance by T/T before sails. But sometimes T/T 30 days after sails would also acceptable.
11. Which currency can we buy in?
We can deal in USD / Euro currency / GBP.
12. How long does it take to ship goods from China by sea?
It takes about 5 weeks to European ports plus 1 week customs clearance, so you can get the container within 6 to 7 weeks. It takes about 2 weeks to east coast and 3 weeks to west coast US ports. All sea goods are shipped from HangZhou Port.
13. How long does it take to ship goods from China by air?
It takes about 7 days to all major destinations.
14. Can we visit the factory to conduct an audit?
Yes, you are welcome to visit our partner factory by prior agreement.
15. How do we retain client confidentiality?
We are happy to CHINAMFG Confidentiality Agreements with customers and will honor them.
16. Which languages do we do business in?
Although we do business with many countries around the world, we can only communicate effectively in Chinese English.
All information supplied should therefore be supplied in this form.
17. Is there a minimum volume of business required to conduct international purchasing?
There are no minimum volumes, but the prices of the goods, plus the fixed costs of importing makes it more economical to buy in high volumes. All potential customers will be assessed on an individual basis to determine if it appears a viable option for all parties to develop a relationship.
18. What type of parts you are specialized in?
Our business contains 2 areas,
1 is for construction precast including lifting system, rigging hardware metal parts.
Another is customized metal business of quality sand castings, investment castings, lost foam castings, hot forgings, cold forgings, stampings, machined parts, injectionmolded plastics parts, etc.
19. Which kind of equipments do you have?
Forging friction press 160Ton, 300Ton, 630Ton, 1200Ton
Casting CHINAMFG of 200kg, 500kg,1000kgs, 2000kgs
Press of 63ton, 120tons
CNC Machining center
CNC Vertical Lathe
CNC Lathe center
Boring machine
Drilling machine
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Fluid Couplings in Wind Turbines for Power Generation
Yes, fluid couplings can be used in wind turbines for power generation, and they play a significant role in optimizing the performance and efficiency of the turbine system. In a wind turbine, the fluid coupling is typically installed between the rotor hub and the main gearbox.
Here’s how fluid couplings are beneficial in wind turbines:
- Soft Start and Load Distribution: During the startup phase, the wind turbine experiences varying wind speeds, and a fluid coupling allows for a smooth soft start by gradually transferring torque from the rotor to the gearbox. This reduces mechanical stress on the components and prevents sudden load shocks.
- Torque Limiting: In high wind conditions, when the wind speed exceeds the rated limit, the fluid coupling can slip, decoupling the rotor from the gearbox. This torque limiting feature protects the gearbox and other drivetrain components from overloading and potential damage.
- Torsional Vibration Damping: Wind turbines are subject to dynamic loads and torsional vibrations due to wind gusts. The fluid coupling acts as a torsional damper, damping these vibrations and ensuring smoother and stable operation of the system.
- Overload Protection: If there is a sudden increase in wind speed, causing an overload condition, the fluid coupling helps absorb the excess torque and protects the turbine from overloading.
- Contamination Prevention: Wind turbine environments are often exposed to dust, dirt, and moisture. The fluid coupling provides an enclosed and sealed environment for the drivetrain, preventing contaminants from entering and extending the life of internal components.
- Redundancy: Some wind turbine designs employ multiple drivetrain stages, including redundant fluid couplings. This redundancy can enhance the reliability and safety of the turbine by providing backup systems in case of component failures.
- Energy Efficiency: By facilitating smooth start-ups and load distribution, fluid couplings contribute to the overall energy efficiency of the wind turbine system. This allows the turbine to harness wind energy more effectively and generate electricity efficiently.
Incorporating fluid couplings in wind turbines helps improve their overall performance, reliability, and lifespan while reducing maintenance requirements and operating costs. As a result, they are commonly used in modern wind turbine designs to optimize power generation from renewable wind resources.
Contribution of Fluid Coupling to the Overall Efficiency of a Mechanical System
A fluid coupling plays a crucial role in improving the overall efficiency of a mechanical system, especially in applications where smooth power transmission, soft-starting, and torque control are essential. Here’s how a fluid coupling contributes to system efficiency:
1. Smooth Power Transmission:
Fluid couplings provide a smooth and gradual transfer of power from the driving to the driven machinery. The absence of direct mechanical contact between the input and output shafts reduces shock loads and vibrations, leading to less wear and tear on the connected equipment. This smooth power transmission results in increased system efficiency and reduced downtime.
2. Soft-Start Capability:
Fluid couplings offer soft-starting functionality, which is particularly beneficial for high-inertia or heavy-load applications. During startup, the fluid coupling allows the input shaft to gradually accelerate the output shaft, preventing sudden jerks or torque spikes. Soft-starting not only protects the mechanical components but also reduces energy consumption during the starting phase, contributing to overall efficiency.
3. Torque Control:
Fluid couplings enable precise control over the torque transmitted between the driving and driven machinery. By adjusting the fill level or using variable speed couplings, the torque output can be fine-tuned to match the requirements of the application. This feature ensures optimal performance and energy efficiency, especially in systems where torque demand varies during operation.
4. Overload Protection:
In case of sudden overloads or jamming of the driven machinery, the fluid coupling acts as a torque limiter. It will slip and absorb excess torque, protecting the mechanical system from damage. This overload protection not only safeguards the equipment but also contributes to the longevity and efficiency of the entire system.
5. Heat Dissipation:
Fluid couplings can absorb and dissipate heat generated during continuous operations. This heat dissipation capability prevents the system from overheating, ensuring consistent performance and avoiding thermal damage to the machinery. By maintaining proper operating temperatures, the fluid coupling aids in improving overall efficiency.
6. Energy Savings:
With its ability to reduce shock loads and provide smooth acceleration, a fluid coupling can help save energy during starting and stopping cycles. The elimination of mechanical shocks and vibrations reduces energy losses, resulting in higher overall energy efficiency.
In summary, a fluid coupling enhances the overall efficiency of a mechanical system by providing smooth power transmission, soft-start capability, precise torque control, overload protection, heat dissipation, and energy savings. Its contributions to reduced wear and tear, energy-efficient operations, and enhanced equipment lifespan make it a valuable component in various 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 2024-04-15
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