The conveying characteristics test bench for an 18-meter pipeline involves several factors, some of which include pipe diameter, pipe material, fluid properties, flow rate, etc. Since your question is broad, I will give you a brief overview of some aspects that may be relevant:
1.Pipe Diameter: Pipe diameter is one of the important factors affecting conveying characteristics. Larger pipe diameters typically allow for greater flow through and reduce the resistance of the fluid.
2.Pipe material: The choice of pipe material affects the efficiency and reliability of conveying. Different materials have different properties such as corrosion resistance, strength, and thermal conductivity.
3.Fluid properties: The type and nature of the fluid being conveyed can also significantly affect the conveying characteristics. For example, there may be differences in the behavior of water, oil, and gas in pipelines.
4.Flow velocity: Flow velocity refers to the speed at which a fluid moves through a pipe. The right flow rate can improve the conveying efficiency. However, excessively high flow rates can lead to pressure loss and pipe wear.
5.Pipe layout: The layout of the pipe, including bending, branching, and elevation changes, can have an impact on the transport characteristics. Proper piping design can reduce energy loss and fluid resistance.
6.Temperature and pressure: The temperature and pressure at which the liquid or gas is being transported are also important considerations. High temperatures or pressures may require the use of specially designed piping and equipment.
7.Resistance and Pumping Stations: Resistance in pipelines is mainly caused by factors such as friction and bending of pipelines. The location and design of the pumping station can have an impact on the efficiency of the conveying.
Taking these factors into account, the transport characteristics can be calculated and optimally designed to ensure that the fluid conveyed in the 18-meter pipeline can achieve the desired results. Specific calculations and analyses may require knowledge of fluid mechanics, piping design, and other fields.