Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Spiral liquid nitrogen freezing device with external liquid supply pipe and method thereof
The invention discloses a novel liquid nitrogen freezing device and a method thereof, and the novel liquid nitrogen freezing device and the method thereof are suitable for freezing and reinforcing construction. The novel liquid nitrogen freezing device comprises the liquid supply pipe and an air return pipe, wherein the air return pipe is a straight pipe, the liquid supply pipe is of a spiral structure and is wound on the outer side of the air return pipe, the lower end of the liquid supply pipe is in communication with the lower part of the side wall of the air return pipe to form a freezingcirculation, the spiral structure on the liquid supply pipe is a plurality of liquid supply pipe spiral rings, the sizes of the liquid supply pipe spiral rings are matched with the hole diameters of freezing holes, the vertical spacing of the liquid supply pipe spiral rings at different positions can be adjusted according to engineering needs, the freezing effect of the vertical different positions is controlled through different spacings, vertical difference freezing is achieved, the requirements of volume expansion after liquid nitrogen gasification and different flow rates are met, and different freezing effects are achieved. The flowing direction of liquid nitrogen poured into a circulating system is changed, the strength of freezing pipes is high, the stability problem of the freezingpipes when the deep high ground pressure stratum is frozen is effectively solved, the structure of the novel liquid nitrogen freezing device is simple, and the freezing effect of the stratum at different depths is controllable.
本发明公开了一种新型液氮冻结器及方法，适用于冻结加固施工。包括供液管和回气管，回气管为直管，供液管为螺旋结构缠绕在回气管的外侧，供液管的下端与回气管侧壁下方连同形成冻结循环，供液管上的螺旋结构为多个供液管螺旋圈，供液管螺旋圈的尺寸与冷冻孔的孔直径匹配，不同位置的供液管螺旋圈的竖向间距可根据工程需要调整，通过不同间距来控制竖向不同位置的冻结效果，实现竖向的差异冻结，满足液氮气化后体积膨胀以及不同流速的要求，实现不同冻结效果。改变了灌入循环系统的液氮流动方向，高冻结管的强度，有效解决深部高地压地层冻结时冻结管的稳定性问题，其结构简单，不同深度范围地层的冻结效果可控。
Spiral liquid nitrogen freezing device with external liquid supply pipe and method thereof
The invention discloses a novel liquid nitrogen freezing device and a method thereof, and the novel liquid nitrogen freezing device and the method thereof are suitable for freezing and reinforcing construction. The novel liquid nitrogen freezing device comprises the liquid supply pipe and an air return pipe, wherein the air return pipe is a straight pipe, the liquid supply pipe is of a spiral structure and is wound on the outer side of the air return pipe, the lower end of the liquid supply pipe is in communication with the lower part of the side wall of the air return pipe to form a freezingcirculation, the spiral structure on the liquid supply pipe is a plurality of liquid supply pipe spiral rings, the sizes of the liquid supply pipe spiral rings are matched with the hole diameters of freezing holes, the vertical spacing of the liquid supply pipe spiral rings at different positions can be adjusted according to engineering needs, the freezing effect of the vertical different positions is controlled through different spacings, vertical difference freezing is achieved, the requirements of volume expansion after liquid nitrogen gasification and different flow rates are met, and different freezing effects are achieved. The flowing direction of liquid nitrogen poured into a circulating system is changed, the strength of freezing pipes is high, the stability problem of the freezingpipes when the deep high ground pressure stratum is frozen is effectively solved, the structure of the novel liquid nitrogen freezing device is simple, and the freezing effect of the stratum at different depths is controllable.
本发明公开了一种新型液氮冻结器及方法，适用于冻结加固施工。包括供液管和回气管，回气管为直管，供液管为螺旋结构缠绕在回气管的外侧，供液管的下端与回气管侧壁下方连同形成冻结循环，供液管上的螺旋结构为多个供液管螺旋圈，供液管螺旋圈的尺寸与冷冻孔的孔直径匹配，不同位置的供液管螺旋圈的竖向间距可根据工程需要调整，通过不同间距来控制竖向不同位置的冻结效果，实现竖向的差异冻结，满足液氮气化后体积膨胀以及不同流速的要求，实现不同冻结效果。改变了灌入循环系统的液氮流动方向，高冻结管的强度，有效解决深部高地压地层冻结时冻结管的稳定性问题，其结构简单，不同深度范围地层的冻结效果可控。
Spiral liquid nitrogen freezing device with external liquid supply pipe and method thereof
一种供液管外置的螺旋形液氮冻结器及方法
SHI RONGJIAN (Autor:in) / YU MINGYUE (Autor:in) / ZHU LEI (Autor:in) / HUANG FENG (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen