Robotic Books
I will share my reading books and other references here. Come back often to check out.
Here's a list of ROS books available at Amazon.com website.
Book to read for Robot Development using Microsoft Robotics Developer Studio (MSRDS), the hardware to use is Lego Mindstorms NXT Robot.
Start Here! Learn the Kinect API
Learn the fundamentals of programming with the Kinect™ API—and begin building apps that use motion tracking, voice recognition, and more.
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Introduction: Marine butterfly valves are crucial components in the maritime industry, playing a vital role in controlling the flow of fluids onboard ships and offshore platforms. Understanding their design, functionality, and applications is essential for ensuring efficient and reliable operation in marine environments.
ReplyDeleteDesign and Construction: Marine butterfly valves are typically designed with a disc or plate that pivots on a central axis within the pipe. This disc, resembling the wings of a butterfly, can be rotated to either permit or restrict the flow of fluids. The valve operates by turning the disc parallel to the flow direction to allow fluid passage or perpendicular to block the flow.
These valves are constructed using materials that can withstand the corrosive effects of seawater and harsh marine conditions. Common materials include stainless steel, bronze, and other corrosion-resistant alloys. Additionally, marine butterfly valves are often equipped with sealing materials such as EPDM or Viton to ensure tight shut-off and prevent leakage.
Applications: Marine butterfly valves find applications in various onboard systems, including:
Ballast Systems: Controlling the flow of water for stability and trim adjustments.
Cooling Water Systems: Regulating the flow of seawater for engine cooling and heat exchange.
Bilge Systems: Managing the discharge of wastewater and bilge water.
Fuel Oil Transfer Systems: Controlling the flow of fuel oil for propulsion and power generation.
These valves are preferred for their compact design, lightweight construction, and ease of operation, making them suitable for use in confined spaces aboard vessels.
Maintenance and Inspection: Regular maintenance and inspection of marine butterfly valves are essential to ensure optimal performance and prevent failures. This includes lubrication of moving parts, checking for signs of corrosion or wear, and testing valve operation to verify functionality.
Conclusion: Marine butterfly valves play a critical role in the safe and efficient operation of marine systems. Understanding their design, applications, and maintenance requirements is essential for ensuring reliable performance and safety at sea.
Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly
valve, check valve, gate /Knife gate valve. We have certificates: CE, ISO, BV, DNV foundry and
products approval. Now we have our own independent R & D, manufacturing, assembly and
warehousing workshops; we have professional pre-sale and after-sale technical support and
perfect services.
Below is our wafer butterfly valve of marine valves,if you need to check more information,
please click here:https://www.tanghaivalve.com/wafer-type-butterfly-valve-th-btv-aw/.Please contact us if you need more support, please contact us freely: [email protected].
We are committed to “Build a top valve enterprise; Be a reliable partner!”
Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!
A concentric type butterfly valve with a resilient seat is a type of valve commonly used in various industries for flow control. Let’s break down its components:
ReplyDeleteConcentric Design: In this design, the centerline of the stem (the shaft that controls the opening and closing of the valve) is also the centerline of the disc (the “butterfly” part of the valve). This design allows for smooth flow regulation and minimal turbulence.
Butterfly Valve: This valve uses a disc as the flow control element. The disc is mounted on a shaft in the center of the valve’s body. When the valve is open, the disc is parallel to the flow, allowing fluid to pass through. When the valve is closed, the disc is perpendicular to the flow, blocking it.
Resilient Seat: The seat of the valve is the part where the disc makes contact when the valve is closed. Resilient seats are made from materials like EPDM (ethylene propylene diene monomer) or NBR (nitrile butadiene rubber). These materials are resilient, meaning they can deform slightly to ensure a tight seal when the valve is closed. Resilient seats also provide good resistance to wear and tear and are suitable for a wide range of operating temperatures.
wafer type double stems butterfly valve (2)
In practical terms, a concentric type butterfly valve with a resilient seat is often used in applications where a tight shut-off is required, such as in water treatment plants, HVAC systems, and various industrial processes. The resilient seat ensures a reliable seal, and the concentric design allows for smooth operation and minimal pressure drop across the valve.
wafer type butterfly valve (7)
Tianjin Tanghai Valve Co., Ltd. is a professional marine valve manufacturer, including butterfly valve, check valve, gate /Knife gate valve. We have certificates:
CE, ISO, BV, DNV foundry and products approval. Now we have our own independent R & D, manufacturing, assembly and warehousing workshops; we have professional pre-sale and after-sale technical support and perfect services.
Please contact us if you need more support, please contact us freely: [email protected].
We are committed to “Build a top valve enterprise; Be a reliable partner!”
Friends from all over the world are welcome to visit us for evaluation, guidance, and orders!
A double plate check valve, also known as a dual plate check valve or wafer check valve, is a type of non-return valve commonly used in various fluid systems on ships. It is designed to allow fluid to flow in one direction while preventing backflow, ensuring that the fluid flow is unidirectional. Here are some key features and details about double plate check valves used in ship valves:
ReplyDeleteKey Features of Double Plate Check Valves
1,Dual Plates: The valve has two spring-loaded plates or discs that open when fluid flows in the desired direction and close when there is a reversal of flow. This design ensures a quick response to changes in flow direction.
2,Wafer Type Design: These valves have a compact and lightweight wafer design, making them easy to install between flanges in a pipeline. They occupy less space compared to other types of check valves.
3,Non-Slam Closure: The spring-loaded mechanism ensures a non-slam closure, reducing the risk of water hammer, which can cause damage to the piping system.
4,Low Pressure Drop: The dual plate design offers minimal resistance to flow, resulting in a low-pressure drop across the valve.
5,Material Options: These valves are available in various materials such as stainless steel, cast iron, and other alloys to suit different types of fluids and environmental conditions, including seawater applications.
6,Versatility: Suitable for a wide range of applications including ballast systems, cooling systems, fuel systems, and bilge systems on ships.
Advantages in Marine Applications
1,Space-Saving: The compact design is particularly advantageous in the confined spaces typically found in marine engine rooms and other shipboard locations.
2,Durability: Marine environments are harsh, and the materials used in these valves are selected for their corrosion resistance and durability.
3,Maintenance: Double plate check valves are designed for easy maintenance, which is critical in marine operations where downtime needs to be minimized.
4,Efficiency: By preventing backflow and ensuring a unidirectional flow, these valves contribute to the efficiency and reliability of the ship’s fluid systems.
Common Uses on Ships
Ballast Water Systems: Ensuring the correct flow direction in ballast water management, crucial for the stability and balance of the ship.
Cooling Water Systems: Used in engine cooling systems to ensure the proper flow of seawater or freshwater for cooling purposes.
Fuel Systems: Preventing backflow in fuel lines, which is critical for the safe and efficient operation of ship engines.
Bilge Systems: Ensuring the proper discharge of bilge water and preventing backflow into the bilge.
Installation and Maintenance Tips
Proper Alignment: Ensure the valve is correctly aligned with the flow direction indicated on the valve body during installation.
Regular Inspection: Periodic inspection and maintenance are essential to ensure the valve operates correctly and to prevent potential failures.
Material Compatibility: Select the appropriate material for the valve based on the specific application and the type of fluid being handled to avoid corrosion and other issues.
In summary, double plate check valves are a critical component in shipboard fluid systems, providing reliable performance, efficiency, and ease of maintenance, which are essential for the safe and effective operation of maritime vessels.
A double plate check valve, also known as a dual plate check valve or wafer check valve, is a type of non-return valve commonly used in various fluid systems on ships. It is designed to allow fluid to flow in one direction while preventing backflow, ensuring that the fluid flow is unidirectional. Here are some key features and details about double plate check valves used in ship valves:
ReplyDeleteKey Features of Double Plate Check Valves
1,Dual Plates: The valve has two spring-loaded plates or discs that open when fluid flows in the desired direction and close when there is a reversal of flow. This design ensures a quick response to changes in flow direction.
2,Wafer Type Design: These valves have a compact and lightweight wafer design, making them easy to install between flanges in a pipeline. They occupy less space compared to other types of check valves.
3,Non-Slam Closure: The spring-loaded mechanism ensures a non-slam closure, reducing the risk of water hammer, which can cause damage to the piping system.
4,Low Pressure Drop: The dual plate design offers minimal resistance to flow, resulting in a low-pressure drop across the valve.
5,Material Options: These valves are available in various materials such as stainless steel, cast iron, and other alloys to suit different types of fluids and environmental conditions, including seawater applications.
6,Versatility: Suitable for a wide range of applications including ballast systems, cooling systems, fuel systems, and bilge systems on ships.
Advantages in Marine Applications
1,Space-Saving: The compact design is particularly advantageous in the confined spaces typically found in marine engine rooms and other shipboard locations.
2,Durability: Marine environments are harsh, and the materials used in these valves are selected for their corrosion resistance and durability.
3,Maintenance: Double plate check valves are designed for easy maintenance, which is critical in marine operations where downtime needs to be minimized.
4,Efficiency: By preventing backflow and ensuring a unidirectional flow, these valves contribute to the efficiency and reliability of the ship’s fluid systems.
Common Uses on Ships
Ballast Water Systems: Ensuring the correct flow direction in ballast water management, crucial for the stability and balance of the ship.
Cooling Water Systems: Used in engine cooling systems to ensure the proper flow of seawater or freshwater for cooling purposes.
Fuel Systems: Preventing backflow in fuel lines, which is critical for the safe and efficient operation of ship engines.
Bilge Systems: Ensuring the proper discharge of bilge water and preventing backflow into the bilge.
Installation and Maintenance Tips
Proper Alignment: Ensure the valve is correctly aligned with the flow direction indicated on the valve body during installation.
Regular Inspection: Periodic inspection and maintenance are essential to ensure the valve operates correctly and to prevent potential failures.
Material Compatibility: Select the appropriate material for the valve based on the specific application and the type of fluid being handled to avoid corrosion and other issues.
A wafer concentric type butterfly valve is a type of butterfly valve commonly used in various industries, including marine applications. Here’s a brief overview of its features, selection considerations, and usage:
ReplyDeleteFeatures:
Concentric Design: The wafer concentric butterfly valve features a concentric design where the stem passes through the center of the disc, ensuring a uniform seal around the circumference. This design minimizes turbulence and pressure drop while providing efficient flow control.
Wafer Style: These valves have a wafer-style body, which means they fit between two flanges without the need for additional bolts or nuts. This compact design saves space and facilitates easy installation and removal.
Resilient Seating: Most wafer concentric butterfly valves come with resilient seat materials such as EPDM or NBR, which provide excellent sealing properties and resistance to wear, corrosion, and chemicals.
Bidirectional Sealing: The concentric design allows for bidirectional sealing, meaning the valve can be installed in either direction without affecting its performance.
Manual or Actuated Operation: Wafer concentric butterfly valves are available in manual or actuated configurations. Manual valves are operated by hand, while actuated valves can be controlled remotely using pneumatic, electric, or hydraulic actuators for automated flow control.
Selection Considerations:
Size and Pressure Rating: Choose a valve size and pressure rating suitable for the intended application and operating conditions. Consider factors such as flow rate, system pressure, and compatibility with existing piping.
Material Construction: Select valve materials compatible with the fluid being handled and the environmental conditions. Common materials include stainless steel, carbon steel, ductile iron, and various alloys.
Seat Material: Consider the type of seat material (e.g., EPDM, NBR, PTFE) based on the fluid properties (e.g., temperature, viscosity, chemical compatibility) and sealing requirements.
Operation Type: Decide whether manual or actuated operation is preferred based on the level of automation required, accessibility, and control system integration.
Standards Compliance: Ensure the selected valve complies with relevant industry standards and certifications for quality, performance, and safety, such as ANSI, API, ISO, and marine classification societies’ requirements.
Usage:
Installation: Properly install the wafer concentric butterfly valve between flanges using appropriate gaskets and fasteners according to manufacturer specifications and industry standards.
Operation: Operate the valve manually or remotely using the designated controls, following established procedures for opening, closing, and adjusting the flow as needed.
Maintenance: Implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and longevity.
Monitoring: Periodically monitor the valve’s operation and condition for signs of leakage, wear, or malfunction, and take corrective action as required to prevent downtime or safety hazards.
Emergency Response: Establish protocols for responding to valve failures, leaks, or other emergencies, including shutdown procedures, isolation measures, and contingency plans to mitigate risks and minimize disruptions.
By considering these factors and following best practices for selection, installation, and maintenance, wafer concentric butterfly valves can effectively control flow and provide reliable performance in marine applications and other industrial settings.
A butterfly valve used in marine applications, often referred to simply as a marine butterfly valve, is a critical component in ship systems for controlling the flow of fluids such as water, fuel, and various other liquids.
ReplyDeleteHere’s an overview Features:
corrosion Resistance: Marine environments expose valves to corrosive elements like saltwater. Hence, marine butterfly valves are typically made from materials such as bronze, stainless steel, or other corrosion-resistant alloys.
Compact Design: Space is often limited aboard ships, so marine butterfly valves are designed to be compact and lightweight while still providing efficient flow control.
Resilient Seating: Many marine butterfly valves feature resilient seating made of materials like EPDM or NBR, which offer excellent sealing properties and resistance to wear, corrosion, and chemicals.
Bidirectional Sealing: Butterfly valves are inherently bidirectional, meaning they can effectively seal flow in both directions, allowing flexibility in installation and operation.
Manual or Actuated Operation: Marine butterfly valves can be operated manually using a hand lever or wheel, or they can be equipped with pneumatic, electric, or hydraulic actuators for remote operation and automation.
Selection Considerations:
Size and Pressure Rating: Choose a valve size and pressure rating suitable for the intended application and system requirements aboard the ship.
Material Compatibility: Select materials compatible with the fluids being handled and resistant to corrosion in the marine environment.
Sealing Material: Consider the type of sealing material based on temperature, pressure, and fluid properties to ensure reliable performance and longevity.
Operation Type: Determine whether manual or actuated operation is preferable based on accessibility, control requirements, and automation needs.
Compliance and Certification**: Ensure the selected valve meets relevant industry standards and certifications for marine applications, such as those from classification societies like DNV, ABS, or Lloyd’s Register.
Usage:
Installation: Install the marine butterfly valve correctly according to manufacturer specifications, ensuring proper alignment, bolt torquing, and gasket sealing between flanges.
Operation: Operate the valve using the designated controls, whether manual or actuated, following established procedures for opening, closing, and adjusting flow rates as needed.
Maintenance: Implement a regular maintenance schedule to inspect, clean, lubricate, and replace components as necessary to ensure optimal performance and reliability.
Monitoring: Periodically monitor the valve’s operation and condition for signs of leakage, wear, or malfunction, and take corrective action as required to prevent downtime or safety hazards.
Emergency Response: Establish protocols for responding to valve failures, leaks, or other emergencies, including shutdown procedures, isolation measures, and contingency plans to mitigate risks and minimize disruptions. By considering these factors and adhering to best practices for selection, installation, operation, and maintenance, marine butterfly valves can effectively control flow and contribute to the safe and efficient operation of ship systems.