On-site photos of the off-tank pumps at the LNG liquefaction plant
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http://bbs.hcbbs.com/attachments/month_1103/11030202498d53c8895c4b77a5.jpg Download (102.94 KB) 3 hours ago http://bbs.hcbbs.com/attachments/month_1103/1103020249554267684b70fb5b.jpg http://bbs.hcbbs.com/attachments/month_1103/1103020249da26e9b94852929e.jpg http://bbs.hcbbs.com/attachments/month_1103/11030202499e261eaf280f8ee8.jpg http://bbs.hcbbs.com/attachments/month_1103/1103020249ca6e4cd09f882d46.jpg http://bbs.hcbbs.com/attachments/month_1103/1103020249edef1cc6170f0762.jpg Download (104.62 KB) 3 hours ago These are photos of the external pumps at an LNG liquefaction plant in Yunnan, for reference only~~ Key points to note: 1. The pipes should be installed without any stress to prevent LNG leakage； 2. The pump’s inlet should be as close as possible to the storage tank, ideally within three meters, in order to prevent cavitation. 3. The pipeline between the storage tank and the pump’s inlet should have as few elbows, tees, and valves as possible, again to avoid cavitation. My QQ number is 9921156; feel free to discuss related issues
Pumps from CRYO-MACH in the United States
Reply 2# mw_mw123: Are there any fire separation requirements between the LNG pump and the storage tank?
Currently, the design seems to involve installing a fire isolation electric valve at the inlet of the pump; the control for this electric valve is located 15 meters away from the pump.
The motor of the LNG pump is explosion-proof; it’s best to keep the distance at less than three meters, as the pump is particularly sensitive to cavitation
There are hoses before and after the centrifugal pump, right? I wonder why this pump doesn’t experience ice spread
Yes, both the inlet and outlet of the pump are made of stainless steel hoses. I’m not sure what you mean by \"ice spread.\" ? Haven’t the pump head and hose both frozen over? A hose used to be a vacuum tube
The following is for reference only (personal opinion): 1. There is a metal bellows at the pump outlet, which is likely designed to prevent stress stretching. But the entrance is not visible. 2. This pump does not have a pre-cooling pipeline; I’m not sure if it’s not visible in the image?
As you can see in the 4th image, the inlet hose (frosted) is clearly visible, and there are also pre-cooling pipelines