A Rotary compensator (Rotary Joint or Rotating Union), also known as a Rotary Joint or swivel Joint, is a special mechanical device used to transfer fluids (such as steam, hot water, cooling water, oil, etc.) between a fixed pipe and a Rotating component without affecting the Rotary motion. It allows one or more fluid channels to pass through a rotating shaft while remaining sealed and preventing fluid leakage.
The main components of the rotary compensator:
Housing: The housing is the body part of the rotary compensator, usually made of metal, providing structural support and protecting the internal components.
rotating part (Rotating Element): This part is connected to the device that needs to be rotated and is able to rotate freely about the central axis.
Stationary part (Stationary Element): This section is typically connected to a fixed fluid supply line and does not rotate with the rotating section.
Seals: Located between the rotating part and the stationary part, ensuring that fluid does not leak from the interface between the two. The seal may be in the form of a packing seal, a mechanical seal, or a bellows seal.
Bearings: Support the rotating part to ensure its smooth rotation. The bearings may be rolling or sliding bearings, depending on the application requirements.
Lubrication system (Lubrication System): To reduce friction and extend service life, many rotary compensators are equipped with lubrication systems to ensure that bearings and other moving parts are properly lubricated.
flow diversion device (Flow Directing Components): Some designs include deflectors or other forms of deflectors to optimize fluid flow paths and improve efficiency.
Dust Covers/Guards: Protect the rotary compensator from outside dust, impurities, especially when working in harsh environment is particularly important.
Connection interface (Connection Interfaces): Interface, typically flanged or threaded, for connecting the rotary compensator to the fluid supply pipe and to the rotary equipment.
Rotary compensators must be designed and manufactured taking into account factors such as operating temperature, pressure, fluid type, and rotational speed to ensure that they can operate reliably under specific application conditions. Choosing the right rotary compensator is essential to guarantee the safety and efficiency of the equipment.