Power transmission is the movement of energy from a source to an output device that performs work.
Some of the power transmission equipments include- Thruster brake, Gear Coupling, Pin Bush Couplings etc.
Coupling is a device that connects two shafts in a mechanical system in order to transfer motion. Couplings are of two types, rigid couplings and flexible couplings. Rigid Couplings is a type of coupling used to connect shafts that are in alignment. It is the simplest type of coupling.
Flexible Couplings is a type of coupling that can connect aligned shafts or flex to accommodate shafts that are slightly misaligned. Various types of flexible couplings are available commercially. Such as gear coupling, Pin bush coupling and chain coupling.
Pin bush couplings are used in general Engineering applications for reliable vbeltguys under normal shaft misalignment. Couplings dampen shocks and vibrations. Progressively increasing stiffness characteristics of special shaped buffers ensure control of vibrations amplitude for protection of equipment. Couplings can take considerable overloads. Standard range has hubs of Cast Iron. For special applications couplings with forged steel hubs are available. Also available are couplings with Brake Drum Couplings with spacer.
Expansion joints are used in piping systems to absorb thermal expansion or terminal movement where the use of expansion loops is undesirable or impractical. Expansion joints are available in many different shapes and materials.
Metallic Expansion Joints (Bellows)
Metallic Expansion ducts are installed in pipe work and duct systems to prevent damage caused by thermal growth, vibration, pressure thrust and other mechanical forces. There is a wide range of metallic bellows designs in a variety of materials. Options range from the simplest convoluted bellows used in petroleum refineries. Materials include all types of stainless steels and high grade nickel alloy steels. Any pipe connecting two points is subjected to numerous types of action which result in stresses on the pipe. Some of the causes of these stresses are:
• internal or external pressure at working temperature
• weight of the pipe itself and the parts supported on it
• movement imposed on pipe sections by external restraints
• thermal expansion
Non Metallic Expansion Joints (Rubber)
Rubber Expansion Joint is a non metallic expansion joint. It is a flexible connector fabricated with metallic reinforcements designed to provide stress relief in piping systems due to thermal changes. When flexibility for this movement cannot be designed into the piping system itself, an expansion joint is the ideal solution. Rubber joints compensate for lateral and angular movements preventing damage and undue downtime of plant operations.
The special construction of the rubber joints can solve problems like- Vibration, Noise, Shock, Corrosion, Abrasion, Stresses, Load Stress, Equipment Movement, Vibration, Pressure Pulsation and Movement in a Piping System.