Tapered pipe liquid nitrogen freezing ware

The utility model relates to a tapered pipe liquid nitrogen freezing ware, freezing pipe including leading -in subsurface, it has first liquid nitrogen air supply pipe to channel into in the freezing pipe, the department is put to the neighbouring freezing pipe's of lower extreme of first liqui...

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Main Authors YAN LIANGTAO, LIU WEIJUN, WANG XIANFENG, HUANG FEI, WANG LINGMIN, QIN YIXIONG, SHI KAICHAO, LIU JIEZHONG, DING YANGLONG, CAO HUACHUN, WEI YANPING, GUO SHENGCHAN, CHEN YUMING, XIN QINGLIAN, WANG ZONGJIN, WANG FENG, QI YANQIU
Format Patent
LanguageChinese
English
Published 24.10.2017
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The utility model relates to a tapered pipe liquid nitrogen freezing ware, freezing pipe including leading -in subsurface, it has first liquid nitrogen air supply pipe to channel into in the freezing pipe, the department is put to the neighbouring freezing pipe's of lower extreme of first liquid nitrogen air supply pipe low tube end position, the lower pipe end pipe diameter of neighbouring first liquid nitrogen air supply pipe is greater than the last pipe end pipe diameter of first liquid nitrogen air supply pipe and identical with a freezing pipe's lower pipe end pipe diameter, still be provided with first discharging pipe in the freezing pipe, first liquid nitrogen feeder sleeve sets up in first discharging pipe, the pipe diameter change position department of the neighbouring first liquid nitrogen feeder sleeve of lower pipe end of first discharging pipe, should freeze the lumen volume that the ware effectively reduces freezing pipe's lower pipe end, the bad conductor of heat because of the air, this tap
Bibliography:Application Number: CN20172235139U