Abstract: The present application describes an intelligent hoisting method for a bridge deck crane system. The method involves determining the splicing heights at two key positions of the segment to be installed by measuring the alignment height of an already installed segment. The segment is hoisted, and the real-time heights at both positions are monitored. If one position reaches the splicing height while the other does not, the lifting point is adjusted until both positions align with their respective splicing heights. This method eliminates the need for reference marks or docking joints on the segment to be installed, thereby avoiding issues related to their precision and installation accuracy. Additionally, it simplifies the splicing operation by removing the need for pre-processing the segment, reducing the overall complexity of the process.

Abstract: An indirect heat pump system includes a refrigerant unit, a cold water handling unit, and a hot water handling unit. A cold water inlet of the cold water handling unit communicates with an evaporator; a cold water outlet of the cold water handling unit communicates with the evaporator; the cold water handling unit is connected to a plurality of loads in parallel. A hot water inlet of the hot water handling unit communicates with a condenser; a hot water outlet of the hot water handling unit communicates with the condenser; the hot water handling unit is connected to the loads in parallel; and a plurality of hot water two-way valves are disposed in pipelines of the hot water handling unit and are configured to control the on and off of the hot water in the loads.

Abstract: A refrigerant heat exchange apparatus includes an apparatus body, a first communication cavity, a second communication cavity, and first valve cores. A cold water unit and a hot water unit are disposed in the apparatus body. A first water inlet is disposed on the first cavity of the cold water unit. A first water inlet is disposed on the third cavity of the hot water unit. A first water outlet is disposed on the second cavity of the cold water unit. A first water outlet is disposed on the fourth cavity of the hot water unit. The first communication cavity communicates with the first cavity and the third cavity. The second water outlet communicates with the first communication cavity. The second communication cavity communicates with the second cavity and the fourth cavity. An indirect heat pump system includes the refrigerant heat exchange apparatus.

Abstract: The indirect heat pump system includes a refrigerant unit, a cold water handling unit, and a hot water handling unit. A cold water inlet of the cold water handling unit communicates with an evaporator; a cold water outlet of the cold water handling unit communicates with the evaporator; the cold water handling unit is connected to a plurality of loads in parallel A hot water inlet of the hot water handling unit communicates with a condenser; a hot water outlet of the hot water handling unit communicates with the condenser; the hot water handling unit is connected to the loads in parallel; and a plurality of hot water two-way valves are disposed in pipelines of the hot water handling unit and are configured to control the on and off of the hot water in the loads.

Abstract: Provided are a refrigerant heat exchange apparatus and an indirect heat pump system. A cold water unit and a hot water unit are disposed in the apparatus body of the refrigerant heat exchange apparatus. A first water inlet is disposed on the first cavity of the cold water unit. A first water inlet is disposed on the third cavity of the hot water unit. A first water outlet is disposed on the second cavity of the cold water unit. A first water outlet is disposed on the fourth cavity of the hot water unit. The first communication cavity communicates with the first cavity and the third cavity. The second water outlet communicates with the first communication cavity. The second communication cavity communicates with the second cavity and the fourth cavity. The second water inlet communicates with the second communication cavity.

Abstract: The invention discloses a double-tank oxidation pond for evaluating catalytic ozonation efficiency, comprising detachable tank bodies made of organic glass, movable ozone aeration pipes and sampling holes. Each tank body has three sections. The height of ozone aeration tube and the number of the holes can be adjusted. The holes are distributed at different positions of the tank bodies for real-time in-situ sampling. It is easy to observe the distribution profile of the gas, liquid and solid phases in the tank bodies. The square double-tank structure is similar to actual production process, and thus the experimental data is easy for computer simulation to enlarge to the actual production process. The size of the ozone aeration pipe and the position of holes in the tank can be adjusted to evaluate the catalytic ozonation effect of sewage treated by different aeration ways and aeration heights.

Abstract: The invention discloses a core-shell structured catalyst comprising a core covered with a shell. The core is made of hematite, tourmaline, germanium, maifanite or kaolin. The invention also provides a method for preparing the catalyst including mixing raw materials of the core with water to form seed-balls with a particle size of 2-4 mm; mixing the seed-balls with raw materials of the shell and water, such that the seed-balls are covered with the raw materials of the shell to form pellets with a particle size of 3-5 mm; processing the pellets at 60-90° C. and then calcining to active the pellets at 450-550° C. to obtain a core-shell structured catalyst. The invention further discloses use of the core-shell structured catalyst in the ozone oxidation reaction. In the invention, a core-shell structured catalyst with good morphology and catalytic performance is prepared, and the production cost of the catalyst is reduced.

Abstract: The invention discloses a double-tank oxidation pond for evaluating catalytic ozonation efficiency, comprising detachable tank bodies made of organic glass, movable ozone aeration pipes and sampling holes. Each tank body has three sections. The height of ozone aeration tube and the number of the holes can be adjusted. The holes are distributed at different positions of the tank bodies for real-time in-situ sampling. It is easy to observe the distribution profile of the gas, liquid and solid phases in the tank bodies. The square double-tank structure is similar to actual production process, and thus the experimental data is easy for computer simulation to enlarge to the actual production process. The size of the ozone aeration pipe and the position of holes in the tank can be adjusted to evaluate the catalytic ozonation effect of sewage treated by different aeration ways and aeration heights.

Abstract: The invention relates to a core-shell structured catalyst comprising a core covered with a shell, the core is made of hematite, tourmaline, germanium, maifanite or kaolin. The invention also provides a method for preparing the catalyst including mixing raw materials of the core with water to form seed-balls with a particle size of 2-4 mm; mixing the seed-balls with raw materials of the shell and water, such that the seed-balls are covered with the raw materials of the shell to form pellets with a particle size of 3-5 mm; processing the pellets at 60-90 ° C. and then calcining to active the pellets at 450-550 ° C. to obtain a core-shell structured catalyst. The invention further discloses use of the core-shell structured catalyst in the ozone oxidation reaction. In the invention, a core-shell structured catalyst with good morphology and catalytic performance is prepared, and the production cost of the catalyst is reduced.

Abstract: A freezing temperature controllable spray freezing tower for preparing micron-sized spherical ice particles includes a tower body, an atomization system, a material feeding system, a circulatory air supplying system, a refrigeration system and a tower wall cooling and thermal insulation system. An air storage cavity is formed at a top of the tower body, a freezing chamber is formed inside the tower body, a material collecting chamber is formed at a bottom of the tower body. The atomization system is in communication with the air storage cavity, the material feeding system is in communication with the atomization system, the circulatory air supplying system is in communication with the bottom of the freezing chamber and the refrigeration system respectively, the refrigeration system is connected to the air storage cavity and a tower wall of the tower body. Thus the operation is convenient and simple.

Abstract: A double-sealing type apparatus for collecting spray freeze ice ball particles and a collecting method for the double-sealing type apparatus are provided. The double-sealing type apparatus includes a collector, a collecting trolley, a vacuum pumping device, a heating device, a first sealing pad and a second sealing pad. The collector is arranged on the collecting trolley, and is provided with a collecting port. The collecting port corresponds to a discharging port at the bottom of a freezing tower. A water inlet is further provided at the collecting port, and the water inlet is in communication with a space formed by the aligning of the collecting port and the discharging port. Good sealing performance is achieved in a double-sealing manner including the sealing pads and the ice sealing, so as to smoothly transfer ice balls in the freezing tower.

Abstract: A freezing temperature controllable spray freezing tower for preparing micron-sized spherical ice particles includes a tower body, an atomization system, a material feeding system, a circulatory air supplying system, a refrigeration system and a tower wall cooling and thermal insulation system. An air storage cavity is formed at a top of the tower body, a freezing chamber is formed inside the tower body, a material collecting chamber is formed at a bottom of the tower body. The atomization system is in communication with the air storage cavity, the material feeding system is in communication with the atomization system, the circulatory air supplying system is in communication with the bottom of the freezing chamber and the refrigeration system respectively, the refrigeration system is connected to the air storage cavity and a tower wall of the tower body. Thus the operation is convenient and simple.

Abstract: A double-sealing type apparatus for collecting spray freeze ice ball particles and a collecting method for the double-sealing type apparatus are provided. The double-sealing type apparatus includes a collector, a collecting trolley, a vacuum pumping device, a heating device, a first sealing pad and a second sealing pad. The collector is arranged on the collecting trolley, and is provided with a collecting port. The collecting port corresponds to a discharging port at the bottom of a freezing tower. A water inlet is further provided at the collecting port, and the water inlet is in communication with a space formed by the aligning of the collecting port and the discharging port. Good sealing performance is achieved in a double-sealing manner including the sealing pads and the ice sealing, so as to smoothly transfer ice balls in the freezing tower.