Problems with pipes and elbows
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Today, while looking at the diagrams, I noticed that many pipes had tees fitted to them, with no equipment installed in between. Why not use pipes with an opening size matching that of the equipment? What other meanings could increasing the larger end have? This post was last edited by hanxue on 2009-2-5 15:03.]
OP, please change the title of the post; a title like this will be deleted.
The pipe size should be determined by calculating the pressure drop in the pipes. As for whether the nozzles of the equipment differ from the pipes, it depends on whether the equipment is of the e*sting type
1. From a process perspective: for example, the suction pipeline of the pump narrows from large to small. 2. From a cost perspective: larger-sized valves are much more expensive than smaller-sized ones. 3. Connection of various device interfaces. 4. The design institute is irresponsible; it acts arbitrarily without any reason.
The diameter of a pipe is not determined based on the size of the equipment’s outlet; it also can’t be arbitrary. Instead, it is determined through engineering calculations, taking into account factors such as the medium flowing within the pipe, pressure drop, flow rate, and material used. The diameter of equipment outlets is often predetermined by the manufacturer as part of the complete set of components, such as in pumps and compressors; for this reason, it is common to see reducers attached to both the inlet and outlet of pumps.
Pipelines have an optimal flow velocity, and under conditions such as flow rate and material properties, there is a most suitable pipe diameter. Once the pipe diameter and equipment interfaces are determined, the size difference between them is bridged by reducers, which connect them together. The difference in pipe diameter at the two ends of the large and small sections is usually not significant; a too large difference often requires other methods to compensate for it. Commonly used ones include the SH3408-96 series, etc.
For some materials, it is necessary to reduce the flow rate before they enter the equipment in order to lessen the impact of these materials on the internal components of the equipment; in such cases, reducers are also required.
The size of the nozzle on the finalized equipment is fixed, whereas the size of the pipe is determined through technical calculations and usually varies; therefore, reducers are often installed at the nozzle area
Pipes and elbows are related to the pressure within the pipe; when it is necessary to increase the pressure, the pipe should go from thick to thin, while when it is necessary to reduce the pressure, it should go from thin to thick