Product Description

 

Product Description

 basic information:

 

Technics	pushing	colours	Black / Galv
size	DN10-DN1200	Transport Package	Wooden Case
Certification	ASME, ANSI, DIN, JIS, BS, GB, KS, API	major port	xingang
HS Code	735710000	Origin	“WR”   china

  

 

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Company Profile

ZheJiang Wanrui Pipe Fitting Co., Ltd is located in Xinman Road Industrial Garden,known as “City of Pipe Fittings inChina”, in Xihu (West Lake) Dis. County, ZheJiang Province,with a registered  capital of CNY 5million and a land occupation  of 15,000m². This company faces ZheJiang -ZheJiang Expressway   to the west, ZheJiang Port to the north,and HangZhou Port to the east, thus is endowed with convenient transportation conditions and favorable geographical positions.
Equipped advanced production lines in China, this company is professional in the manufacture of pipe fittings like pipe bends, tapered pipes, tees, elbows and flanges etc. After being licensed for manufacture of pressure pipe comp-1nts inChina, this company successfully passed ISO9001 certification of quality system,and has been appointed as a fixed partner by China National Petroleum Corporation,the Ministry of Power of PRC and the Ministry of Chemical Engineering of PRC for years on end.
This company possesses 3 sets of large pushing equipments, 2 sets of large hydraulic equipments,two sets of mid frequency pipe bending equipments,one set of cold-extruding bend and elbow forming equipments of proprietary rights,as well as complete testing equipments. High/medium/low pressure pipe fittings manufactured by this company,including bends,elbows, tapered pipes, tees, pipecaps, flanges and sockets etc made of various materials like carbon steel, alloysteel, chrome molybdenum steel and wear-proof ceramics etc, have been wildly used in many large scale projects concerned with petroleum, chemical engineering,electricity, construction,and irrigation works etc.With its strong technical forces,advanced technical processes, perfect testing methods,scientific management and consummate post-sales services, this company, for years, has not only succeeded to contract pipe fittings manufacture for tens of large projects in China,but has managed to market its products in over 20 overseas countries and districts including North America,the EU, Middle East and Southeast Asia etc,and has won nice reputation and credit.
In this new round of development,this company will further implement its business concept of “Kind operation, human-orientation, scientific management and seeking excellence”, and is determined to seek development by following market trends and pursuing large-scale operation as a scientific principle;withServing the society and giving love” as a business mission, this company sincerely welcome clients home and abroad to come for visiting and business negotiations!

 

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Differences Between Rigid and Flexible Flange Coupling Designs

Flange couplings are essential components used in various mechanical systems to connect shafts and transmit power between them. Two common types of flange coupling designs are rigid flange couplings and flexible flange couplings. These designs differ in their construction and performance characteristics:

Rigid Flange Couplings:

Rigid flange couplings are designed to provide a solid and inflexible connection between two shafts. They are suitable for applications where shaft alignment is precise, and no misalignment is expected during operation. The key features of rigid flange couplings include:

• Stiff Construction: Rigid flange couplings are made from robust materials such as steel or aluminum. Their stiffness ensures that there is little to no flexibility, maintaining a solid connection between the shafts.
• No Misalignment Compensation: Rigid flange couplings do not accommodate any misalignment between the shafts. Therefore, proper alignment is crucial during installation to prevent undue stress on the shafts and connected equipment.
• High Torque Transmission: Due to their rigid design, rigid flange couplings offer high torque transmission capabilities, making them suitable for heavy-duty applications with precise alignment requirements.

Flexible Flange Couplings:

Flexible flange couplings, as the name suggests, offer some degree of flexibility and misalignment compensation between the connected shafts. They are used in applications where shaft misalignment, caused by factors like vibration, temperature changes, or minor installation errors, is likely to occur. The key features of flexible flange couplings include:

• Misalignment Compensation: Flexible flange couplings can tolerate angular, parallel, and axial misalignment to some extent. This helps to reduce stress on the connected equipment and enhances the overall performance and lifespan of the system.
• Vibration Dampening: The flexibility of these couplings allows them to dampen vibrations and shocks, making them suitable for systems where vibrations are a concern.
• Reduced Stress on Bearings: Flexible flange couplings can help reduce the stress on bearings and other connected components by absorbing misalignment forces.

When choosing between rigid and flexible flange couplings, it is essential to consider the specific requirements of the application. Rigid flange couplings are best suited for applications with precise alignment, while flexible flange couplings are ideal for systems where some degree of misalignment is expected. The selection process should also take into account factors such as torque capacity, shaft sizes, operating conditions, and maintenance requirements.

In conclusion, the choice between rigid and flexible flange coupling designs depends on the application’s alignment needs and the desired level of misalignment compensation and vibration dampening.

How Does a Flange Coupling Contribute to the Longevity of Connected Equipment?

A flange coupling plays a crucial role in enhancing the longevity of connected equipment by providing several key benefits:

• Shock and Vibration Damping: Flange couplings, especially flexible types, are designed to absorb and dampen shock loads and vibrations that may occur during the operation of rotating machinery. By reducing the impact of these forces on the connected equipment, the coupling helps prevent premature wear and fatigue, thus extending the lifespan of the equipment.
• Misalignment Compensation: In many industrial applications, shaft misalignment is unavoidable due to various factors like thermal expansion, foundation settling, and equipment repositioning. Flange couplings, especially flexible ones, can accommodate both angular and parallel misalignment, ensuring that the connected equipment operates smoothly even under such conditions. This helps prevent stress on the equipment’s bearings and other components, leading to longer service life.
• Torsional Vibration Control: Torsional vibrations can occur in rotating machinery, especially when sudden changes in load or speed happen. Flange couplings with proper torsional stiffness and damping characteristics help control these vibrations, reducing the risk of fatigue failure in the connected equipment.
• Reduced Wear and Tear: By minimizing shock, vibration, and misalignment-related stresses, a flange coupling helps reduce wear and tear on the connected equipment’s components, such as shafts, bearings, and gears. This reduction in wear contributes to the equipment’s overall longevity and decreases the frequency of maintenance and replacement.
• Protection Against Overloads: Flange couplings can act as a safeguard against unexpected overloads in the system. In cases where the equipment experiences excessive loads or torque spikes, the coupling can provide a level of protection by disengaging or slipping, preventing damage to the machinery.
• Optimized Power Transmission: A well-selected and properly installed flange coupling ensures efficient power transmission between the driving and driven shafts. The smooth and reliable transfer of power reduces the risk of power losses, heat buildup, and excessive strain on the connected equipment, which are all factors that could impact its longevity.
• Corrosion Resistance: Flange couplings made from corrosion-resistant materials are well-suited for applications in harsh environments, such as those involving moisture or corrosive substances. By protecting against corrosion, these couplings help maintain the integrity and durability of the connected equipment.

In conclusion, a flange coupling’s ability to dampen shocks, compensate for misalignment, control vibrations, and optimize power transmission contributes significantly to the longevity and reliable performance of the connected equipment, ultimately leading to reduced downtime and maintenance costs.

Limitations and Disadvantages of Flange Couplings

While flange couplings offer several advantages, they also have some limitations and disadvantages that should be considered when selecting them for a specific application:

• 1. Size and Weight: Flange couplings tend to be larger and heavier compared to some other coupling types. This can be a limitation in applications where space and weight are critical factors.
• 2. Higher Cost: Flange couplings can be more expensive to manufacture and install compared to simpler coupling designs like sleeve couplings or clamp couplings.
• 3. Complex Installation: Installing flange couplings may require more time and expertise due to their intricate design and multiple components, including bolts and gaskets.
• 4. Rigidity: Flange couplings are relatively rigid, which means they may not accommodate as much misalignment as flexible couplings. Excessive misalignment can lead to increased stress on the equipment and coupling, potentially resulting in premature failure.
• 5. Bolt Stress: Proper tightening of the bolts is crucial for the effective functioning of flange couplings. Over-tightening or under-tightening the bolts can lead to bolt fatigue or coupling slippage.
• 6. Noise and Vibration Transmission: Flange couplings, especially rigid designs, can transmit more noise and vibration compared to flexible couplings, potentially affecting the performance and longevity of connected equipment.
• 7. Maintenance: Flange couplings may require more frequent maintenance due to the presence of multiple components and the need to periodically check bolt tightness and gasket conditions.
• 8. Corrosion: Depending on the material used, flange couplings may be susceptible to corrosion in certain environments. Corrosion can compromise the integrity of the coupling and reduce its service life.

Despite these limitations, flange couplings are still widely used in various industrial applications due to their robustness, high torque capacity, and ability to handle heavy loads. Proper application, installation, and maintenance can help mitigate some of these disadvantages and ensure the reliable performance of flange couplings in a wide range of systems.

editor by CX 2024-01-12