Metal Bellows Expansion Joints
To begin, metal expansion joints are also referred to as metal bellow expansion joints, metallic expansion joints, exhaust bellows, and metal bellows. Furthermore, metal bellow expansion joints are helpful for thermal expansion and movement in pipelines. Additionally, they consist of different parts.
Firstly, the main part of the metal expansion joint is the metal bellow. Furthermore, the bellow also is the body of the joint. Additionally, bellows can be made out of different metals. Next is a connector at both ends, this is usually a flange. Then is a tie rod. Moreover, choosing if a tie rod is needed, depends on the application. Also piping metal expansion joints are chosen according to the three basic types of movement: axial, angular and lateral. They also have usage in various sectors, like energy productions, paper industry, chemical industry, water treatment, oil and gas.
Metallic Expansion Joints
In short, a metallic expansion joint by itself accommodates axial, longitudinal and angular movements in a pipelines, ducts and vessels. The addition of accessories to a metal expansion joint increases the complexity but also it’s capabilities. In addition, the accessories for the expansion joints include, liners, weld ends, flanges, collars, hollow reinforcing rings, solid root rings, equalizing rings, control rods, limit rods, and tie rods.
In brief, when you can’t use a rubber or fabric expansion joint, there are several types of metal expansion joints you could use. However, each type of expansion joint is designed to operate under a specific set of design conditions. Furthermore, some of the most common types of expansion joints are round and rectangle expansion joints, single expansion joints, formed metal bellows, laminated bellows expansion joints, expansion compensators, universal expansion joints, externally pressurized expansion joints, and bellows pump connectors.
Single Metal Expansion Joints
In this paragraph, I’m going to tell you about single metal expansion joints. For instance they have one bellow. In addition to, axial compression and extension, the lateral and angular movement can be accommodated. Therefore, they do not restrain the internal pressure thrust. However, the piping designer must provide the system with separate anchoring and guiding to resist the pressure thrust. Furthermore, where small thermal movements are involved and proper anchoring and guiding is feasible, a single metal expansion joint is the most economical installation.
Universal Metal Bellows
For the most part universal metal bellows consist of two metal bellows separated by a pipe spool. Usually this configuration helps with large lateral movements. In addition to axial compression and extension and angular deflection. Also metal expansion joints have no restraints to resist pressure thrust. Therefore, the piping designer must provide separate anchoring to handle pressure thrust.
Exhaust bellows are also known as exhaust expansion joints or corrugated flexible pipe and are around heat. Therefore, metal exhaust bellows are usually designed for high temperature.
Finally while choosing a metal expansion joint customer must know the following. Firstly all the size of the joint. Secondly pressure at which the system operates. Next is the temperature at which the system operates. Last of all, the possible direction of deflection.