5-kilometer transmission line
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Is transporting diesel or gasoline over 5 kilometers considered a long-distance pipeline? Besides installing expansion joints, what other issues need to be considered from a design perspective? When transporting crude oil, should temperature degradation also be taken into consideration?
Long-distance pipelines refer to long-distance pipelines (usually over 50 km in length) that are used by production sites, storage and transportation facilities, and end-users to transport commercial media such as oil and gas. These pipelines cross provinces and cities, as well as rivers and roads, and are equipped with pressure pumping stations. It is designed in accordance with standards such as GB50253 and 50251. I think what the original poster is referring to belongs to industrial pipelines. ‘ For reference only. :handshake :victory:
I’m wondering if there are any exchanges regarding design experience in this area? There are small villages along the way, 2 intersections, and no other obstacles.
Expansion joints are not necessary; the pipeline stress level meeting the specifications is sufficient. If crude oil pipelines are not insulated, temperature drops need to be taken into consideration.
5 kilometers is not a long distance for transmission. In addition to installing expansion joints, it is also necessary from a design perspective to consider a safe distance from residents
There are no clear standards for long-distance pipelines; they can be considered long-distance pipelines (they should be classified as such from the time of production), or they may not be. It’s the same with the pipelines used for internal transportation within oil fields – in reality, there isn’t much difference, or rather, these pipelines can also be regarded as a type of long-distance pipeline. It’s correct to design them in accordance with the specifications for long-distance pipelines.
Mainly, thermal expansion and contraction caused by temperature changes are considered, followed by flow rate and resistance.
There are small villages along the way, 2 intersections, and the height issue also needs to be taken into account. To reduce costs, several gantries can be installed； Reduce backflow and venting along the line ；
Thank you all. I’ve looked up some information over the past couple of days, and it seems I now have a general idea of things.
Temperature? It depends on the areas you pass through. Of course, drastic changes need to be taken into consideration, but generally they’re not necessary
It is determined by who designs it; any qualified design firm can earnestly follow the specifications. If it’s designed by myself, I still say to study the *standards carefully.
There are two points to consider outside of the regulations: one is whether the intersection is above ground or underground; if it is located on the outskirts of a town, it is necessary to consult the local planning authorities. Secondly, crude oil pipelines need to account for reverse flow to ensure safety during shutdowns.