Laying points of stainless steel elbow in pipeline.

Laying points of stainless steel elbow in pipeline:

1. In order to reduce the heat loss of the stainless steel elbow and prevent thermal deformation, the buried depth of the pipeline should be greater than 1.2 meters. (calculated from the top of the pipe). The burial depth in alpine regions should be appropriately deepened. At the same time, all pipes should be avoided to be laid below the water table.

2. For areas where the groundwater level is high or it is difficult to dig deep for other reasons, measures should be taken as far as possible to avoid water insulators before burying the pipes. In the absence of conditions, shallow excavation and deep burial can also be used, that is, a pipe trench is excavated 20 cm above the groundwater level, and then covered with soil to form an earth embankment.

3. After the pipeline is put into production, the maintenance will be more and more difficult. In order to prevent the deformation of pipes and stainless steel elbows, determine the soil cover, and the thickness of the cover in the shallow excavation and deep buried sections is not less than 1.5 meters.

4. Drawing and analyzing hydraulic gradient lines is helpful to study the working process and characteristics of pipes and stainless steel pipe fittings. When operating at increased flow rates and liquid viscosity, the end pressure will decrease with increasing hydraulic gradients.

5. The working conditions of the pumping station are discussed in detail using the steady-state pressure distribution diagram. When the pumping station operates at the flow rate "through the tank", the pressure map of each section is independent of the working conditions of the adjacent stainless steel pipe fittings. The pressure at the initial stage is determined by the work of the pumping station, while the pressure at the end is determined only by the liquid level in the tank.

6. As we know the characteristic curve of the pump, when the flow increases, the pressure generated by the pump decreases, so the pressure of the pump will be lower than the original working unit, and the steepness of the curve established by the stainless steel pipe fittings will also increase. Pump and line characteristics are a method of combining characteristic curves. Stainless steel elbows can change pipe characteristics by throttling and backflow.

7. During throttling, the pressure loss caused by the hydraulic resistance formed by the throttling element in the liquid flow limits the pressure behind the throttling element. When hydraulic resistance changes, throttling increases losses and reduces losses.

8. Since the throttling resistor is located in the pipe and stainless steel elbow and always flows in the liquid, there is always a pressure loss on the throttling resistor even if there is no need to limit the pressure.

9. Therefore, in the throttling adjustment, in order to compensate the loss on the throttling device, there will always be additional energy consumption in the process of oil transportation, usually these losses are 10-15kpa. That is, under the rated working conditions, the energy loss of the stainless steel elbow throttling mechanism is less than 1%.

The stainless steel elbow mainly plays the role of changing the pipe target through the elbow. According to the point of view, it can basically be divided into three normal situations. According to the difference of construction, abnormal elbows of other angles can also be manufactured. The material of stainless steel is slightly better than the use of carbon steel elbow. The chemical composition contained in it will keep the elbow from rusting and corrosion for a long time. With the rapid development of my country's stainless steel elbow market, the use and discussion of the core manufacturing techniques associated with it will definitely become the focus of attention of enterprises in the industry. If stainless steel pipe fittings manufacturers want to occupy a favorable position in the market, they must constantly expand new use boundaries and strengthen upgrades to cope with fierce competition.

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