6results about How to "Long-term stable performance" patented technology

The application discloses a rotary air preheater with a multilayer annular heat pipe, relates to the technical field of air preheating, and comprises an outer shell, an inner rotor, a center cylinder, a flue gas inlet, an air outlet, a flue gas outlet, an air inlet, a disturbance mechanism, a ring pipe group, a driving piece and a corrugated plate group. The center cylinder is coaxially arranged at the center position in the outer shell, the inner rotor is rotationally arranged on the outer wall of the center cylinder, the outer wall of the inner rotor is rotationally connected with the inner wall of the outer shell, the inner rotor is driven by the driving piece located at one side of the outer shell, the flue gas inlet and the air outlet are formed in the top end of the outer shell, and the flue gas outlet and the air inlet are formed in the bottom end of the outer shell. The corrugated plate group and the ring pipe group are arranged in the inner rotor, and a plurality of disturbance mechanisms are circumferentially arranged on the inner wall of the ring pipe group. The flue gas and the air are transversely washed to the annular heat pipe, the heat exchange coefficient of the flue gas and the air is strengthened, the deposition rate and deposition amount of ammonium bisulfate on the heated surface can be significantly slowed down, and the safety risk is reduced.

The application discloses a kind of nanometer zero-valent iron for electric reduction of nitrate synthesis ammonia and its preparation method and application.The catalyst is nanometer zero-valent iron material for electric reduction of nitrate synthesis ammonia, using one-step method and by regulating and controlling cobalt reagent dosing amount, nanometer zero-valent iron for electric reduction of nitrate synthesis ammonia with different cobalt content is prepared.The application includes using the catalyst as cathode, in the double-chamber electrolytic cell and direct current power supply double-chamber flow electrolytic cell system equipped with three electrodes, ammonia is prepared by electrocatalytic reduction of nitrate, and ammonia is recovered by acid absorption liquid device.The catalyst delays the problems of easy passivation of nanometer zero-valent iron and serious hydrogen evolution side reaction in the process of electrochemical reduction of nitrate, accelerates the reduction rate of nitrate, improves the ammonia selectivity and faraday efficiency of nitrate, and shows stable application performance in the process of actual wastewater electrocatalytic long-term treatment.

This utility model discloses a connecting sealing lock and its RF connector, including a connecting cylinder disposed on the outer periphery of two sets of RF connectors. Connecting washers are provided at both ends of the connecting cylinder, and a sealing gasket is provided on the inner wall of the connecting cylinder between the two sets of connecting washers. A locking plate is provided at the tail end of the connecting cylinder. A slot for inserting the locking plate is opened at the end of the connecting cylinder away from the locking plate, and a locking element is provided at the slot to secure the locking plate into the slot. This utility model forms a stable multi-point, multi-structure connection through the insertion of the locking plate into the slot and the fixing by the locking element, effectively resisting external interference, ensuring a tight fit of the RF connector, guaranteeing stable signal transmission, and reducing the risk of signal interruption and transmission quality degradation.

The utility model relates to the technical field of metal corrosion prevention, and discloses a sacrificial anode corrosion prevention device, which comprises a protection cylinder, a plurality of sacrificial anodes, a plurality of sacrificial anodes and a plurality of sacrificial anodes, the protection cylinder comprises a bottom plate, a plurality of side rods and an upper cover, the side rods are detachably arranged on the bottom plate and equidistantly arranged along the edge of the bottom plate, the upper cover is detachably arranged at the upper ends of the side rods, and an anode connecting seat is arranged on the side wall of the upper cover; the positioning seat is detachably arranged between the side rods, and a plurality of positioning notches are formed in the positioning seat at equal intervals. The utility model has the advantages that the anode blocks are uniformly distributed, the air permeability is enhanced, the electrolyte circulation is facilitated, the whole anode block has a certain bearing effect, and the deformation during burying is prevented.

This invention relates to a method for preparing and applying a superhydrophobic expanded graphite coating. The invention addresses the problems of complex preparation processes, high costs, or insufficient mechanical stability in existing technologies. The method uses expanded graphite as the main raw material and adds epoxy resin to prepare a superhydrophobic expanded graphite coating with photothermal properties. The coating is uniformly sprayed onto the surface of circular nickel foam using a spraying technique, resulting in a multifunctional superhydrophobic expanded graphite photothermal evaporator with sustainability, corrosion resistance, recyclability, self-cleaning capabilities, and water purification abilities. This invention belongs to the field of superhydrophobic coating preparation technology.

This utility model discloses an edge protection ring for electrical cable routing, specifically relating to the field of cable routing protection technology. It includes a protective end face, one end of which has a plug-in portion for insertion into the inner wall of one end of a metal cable tray. A protective cavity is formed on the inner side of the protective end face to accommodate the electrical cable, preventing wear caused by friction between the cable and the metal cable tray or other metal components. A snap-fit ​​component is provided on the plug-in portion for positioning and fixing the plug-in portion to the inner wall of the metal cable end. This utility model not only effectively prevents cable wear but also has the advantages of convenient installation, reliable positioning, and high durability, and can be widely used in electrical cable routing protection scenarios.