Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Artificial stratum freezing system with staged refrigeration and construction method thereof
The invention relates to an artificial stratum freezing system with staged refrigeration and a construction method thereof. The system comprises a pre-buried pipeline, a feeding end control valve, a output end control valve, a brine delivery mechanism, and a carbon dioxide delivery mechanism. The pre-buried pipeline is buried in a to-be-frozen area in a soil body and comprises a feeding end and an output end; the feeding end control valve is mounted at the feeding end of the pre-buried pipeline, and the feeding end control valve comprises a first inflow port, a second inflow port and an outflow port communicated with the feeding end; the output end control valve is mounted at the output end of the pre-buried pipeline, and the output end control valve comprises an inlet port, a first discharge port and a second discharge port which are communicated with the output end; the brine delivery mechanism is connected with the first inflow port and the first discharge port; and the carbon dioxide delivery mechanism is connected with the second inflow port and the second discharge port. In the early stage of freezing, salt water with low cost is adopted for freezing, and when the freezing efficiency of the salt water is obviously reduced, liquid carbon dioxide is utilized for freezing, so that efficient freezing continues to be kept, the whole-course freezing efficiency is improved, and the construction cost is reduced.
本发明涉及一种分阶段制冷的人工地层冻结系统及其施工方法，包括：预埋管路，埋设于土体中待冻结的区域内，预埋管路包括送入端和输出端；送入端控制阀，安装于预埋管路的送入端上，送入端控制阀包括第一流入端口、第二流入端口以及与送入端连通的流出口；输出端控制阀，安装于预埋管路的输出端上，输出端控制阀包括与输出端连通的进入端口、第一排出端口以及第二排出端口；盐水输送机构，与第一流入端口和第一排出端口连接；二氧化碳输送机构，与第二流入端口和第二排出端口连接。在冻结前期采用成本较低的盐水进行冻结，当盐水冻结效率明显下降时，再利用液态二氧化碳进行冻结，以继续保持高效地冻结，提高了全程冻结的效率，降低施工费用。
Artificial stratum freezing system with staged refrigeration and construction method thereof
The invention relates to an artificial stratum freezing system with staged refrigeration and a construction method thereof. The system comprises a pre-buried pipeline, a feeding end control valve, a output end control valve, a brine delivery mechanism, and a carbon dioxide delivery mechanism. The pre-buried pipeline is buried in a to-be-frozen area in a soil body and comprises a feeding end and an output end; the feeding end control valve is mounted at the feeding end of the pre-buried pipeline, and the feeding end control valve comprises a first inflow port, a second inflow port and an outflow port communicated with the feeding end; the output end control valve is mounted at the output end of the pre-buried pipeline, and the output end control valve comprises an inlet port, a first discharge port and a second discharge port which are communicated with the output end; the brine delivery mechanism is connected with the first inflow port and the first discharge port; and the carbon dioxide delivery mechanism is connected with the second inflow port and the second discharge port. In the early stage of freezing, salt water with low cost is adopted for freezing, and when the freezing efficiency of the salt water is obviously reduced, liquid carbon dioxide is utilized for freezing, so that efficient freezing continues to be kept, the whole-course freezing efficiency is improved, and the construction cost is reduced.
本发明涉及一种分阶段制冷的人工地层冻结系统及其施工方法，包括：预埋管路，埋设于土体中待冻结的区域内，预埋管路包括送入端和输出端；送入端控制阀，安装于预埋管路的送入端上，送入端控制阀包括第一流入端口、第二流入端口以及与送入端连通的流出口；输出端控制阀，安装于预埋管路的输出端上，输出端控制阀包括与输出端连通的进入端口、第一排出端口以及第二排出端口；盐水输送机构，与第一流入端口和第一排出端口连接；二氧化碳输送机构，与第二流入端口和第二排出端口连接。在冻结前期采用成本较低的盐水进行冻结，当盐水冻结效率明显下降时，再利用液态二氧化碳进行冻结，以继续保持高效地冻结，提高了全程冻结的效率，降低施工费用。
Artificial stratum freezing system with staged refrigeration and construction method thereof
分阶段制冷的人工地层冻结系统及其施工方法
SUN MIN (Autor:in) / WU YUANHAO (Autor:in) / ZENG ZHEN (Autor:in) / HE LONGPENG (Autor:in) / WEI FULU (Autor:in)
03.08.2021
Patent
Elektronische Ressource
Chinesisch
Artificial stratum freezing method utilizing low-temperature carbon dioxide to cyclic refrigeration
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2020