How to prevent mechanical damage to pipelines and how to maintain them

{1} Oil pipeline design should pay attention to the prevention of mechanical damage

1. Low temperature damage

When the working environment temperature of the oil pipeline is too low, the pressure and impact force that the pipeline can withstand are greatly reduced due to the low temperature, which easily leads to damage. Therefore, in the actual operation process, when the operating temperature is equal to or lower than minus 20 ℃, low-temperature materials should be selected according to the actual requirements. However, in the design process, attention should be paid to the influence of local environmental temperature, or when liquefied gas undergoes rapid gasification, the metal temperature value of the pipeline should be considered, and a lower temperature should be designed for impact testing according to relevant regulations

2. High temperature damage

In the process of designing pipelines, it is necessary to consider that when the structure and properties of metal materials deteriorate at high temperatures, some common creep failures occur. When the metal material is at a melting point temperature of (0.3~0.5) Tm, strain occurs under constant stress. With time, the strain increases, leading to deformation and stable creep developing to creep and even fracture.

. Furthermore, due to the physical properties of carbon steel itself, it is easy for pipelines to experience physical strength if they are exposed to high temperatures for a long time. This will cause the stainless steel gear pump pipeline to break and cause serious losses to the device when it reaches its service life, so the tendency of graphitization should be considered in the design process

How should stainless steel gear pumps be maintained on a daily basis

When transporting oil products, gear oil pumps are often used as pump types because of their simple structure, convenient operation, affordable price, and wide range of applications. Therefore, gear pumps are very popular as a type of pump. Gear pumps rely on a pair of gears to engage and form a pressure to transport liquids. Because gears require lubricating liquids, most gear pumps are used to transport oil, so gear pumps are mostly referred to as gear oil pumps. However, gear pumps also have their limitations because they cannot transport oils containing solid impurity particles. If there are impurities in the material, other pumps such as the CYZ type self priming pump can only be used

Gear oil pumps are generally made of two common materials: stainless steel and cast iron. Stainless steel gear pumps have corrosiveness and are stronger than cast iron materials. Therefore, if the environment is harsh, we generally recommend using stainless steel gear oil pumps. The commonly used gear oil pumps include KCB gear oil pump, YCB arc gear oil pump, and WCB portable gear oil pump. These three types of gear pumps all have stainless steel and cast iron materials, but their purposes are different. KCB gear pumps are more common, while YCB arc gear pumps have lower noise and higher pressure; The WCB handheld gear pump is a small flow gear pump that can only be used in situations such as fuel dispensers or oil extraction drums