In the piping systems of industrial sectors such as petroleum, chemical engineering, and electric power, spring supports and hangers are critical components for ensuring safe operation. They absorb pipeline displacements through the deformation of elastic elements, balance loads, and prevent pipeline damage caused by factors like thermal expansion and contraction as well as vibration, thus well-deserving the title of the "invisible guardians" of pipelines.
Classified by structure and function, spring supports and hangers mainly fall into three categories:
Constant-force spring supports and hangers: Leveraging the principle of leverage, they can maintain a constant load throughout the entire displacement range of the pipeline. They are suitable for scenarios with large displacements and high requirements for load stability, such as high-temperature steam pipelines.
Variable spring supports and hangers: Their load adjusts linearly with displacement. They are applicable to pipelines with small displacements where load changes are acceptable, such as cold water pipelines.
Rigid supports and hangers: Without elastic elements, they only provide fixed support and are used for static pipelines with no displacement or minimal displacement.
When selecting spring supports and hangers, three core parameters require focused attention:
Rated load: It must be accurately matched with the actual weight of the pipeline. Excessive load deviation will lead to the failure of the supports and hangers or pipeline deformation.
Displacement capacity: It should be determined based on data such as the thermal displacement and vibration displacement of the pipeline during operation, ensuring that the stroke of the supports and hangers can fully cover the displacement range.
Operating temperature: Elastic elements made of different materials have different temperature resistance performances. For example, carbon steel springs are suitable for temperatures ranging from -20℃ to 200℃, while stainless steel springs can withstand high temperatures above 400℃. Selection should be made according to the temperature of the pipeline medium.
There are strict requirements for the installation and maintenance of spring supports and hangers. During installation, it is necessary to ensure that the springs are in the preset "cold-state" or "hot-state" position to avoid excessive initial stress. During operation, regular inspections are required to check for rust and deformation of the springs and the clarity of load indicator plates. If problems such as spring breakage and excessive displacement are found, timely replacement is necessary to prevent safety accidents like pipeline leakage and collapse.
As an important part of the piping system, the rational selection and maintenance of spring supports and hangers are directly related to the safety and stability of industrial production, and constitute a crucial link that cannot be ignored in the operation and maintenance of industrial equipment.
