39results about How to "Avoid overheating problems" patented technology

The supercritical CO with uniform combustion and anti-corrosion and anti-coking disclosed in the present invention 2 The boiler and boiler system include the main combustion chamber, the upper furnace, the folding flame angle and the flue. The cross-section of the main combustion chamber is circular, oval or N-shaped, and N>4, and there are at least four Burner group, each group of burner nozzles corresponding to each burner group includes recirculation air nozzles, primary air nozzles and secondary air nozzles, and there are symmetrically distributed side recirculation air nozzles on both sides of the primary air nozzles. The nozzles and side recirculation air nozzles are used to feed recirculated flue gas or a mixture of recirculated flue gas and secondary air into the main combustion chamber, and the primary air nozzles are used to feed primary air or primary air and secondary air into the main combustion chamber. The mixed gas of the circulating flue gas, the secondary air nozzle is used to send the secondary air or the mixed gas of the secondary air and the recirculating flue gas into the main combustion chamber, so that the supercritical carbon dioxide boiler and the boiler system are loaded evenly, and avoid the boiler wall High temperature corrosion and coking and slagging occur.

The embodiment of the invention discloses a heating control method, device, equipment and medium for a windshield glass of a helicopter. The method includes: acquiring the current temperature of the windshield when the collection time is reached; determining the temperature difference that matches the temperature difference according to the temperature difference between the current temperature and the historical temperature of the windshield at the previous collection time. heating power; after controlling the heating device to heat the windshield according to the heating power, return to the operation of obtaining the current temperature of the windshield when the collection time is reached, so as to control the windshield according to a constant temperature rise Speed ​​heating to target heating temperature. The above technical solution improves the controllability of the windshield heating rate when the helicopter windshield glass defogging and anti-icing functions are turned on, ensures the normal operation of the windshield glass, and avoids the problem of overshooting of the windshield glass heating up.

The invention discloses a boiler starting method for preventing oxide skin generation of a 1,000 MW octagonal tangent circle boiler and a secondary combustion accident of a tail flue. Boiler warming is carried out before a combustor is put into operation, then, the combustor is put into operation, and the operation of the combustor is adopted according to the following operation principles that all large oil guns in an AB layer and part of large oil guns in a CD layer are put one by one, and when the outlet pressure of a boiler steam-water separator reaches 0.3 MPa, all micro oil guns in an A layer are put, and then a powder manufacturing system of the A layer is put into operation; and at the thermal state flushing and temperature rising and boosting stage, part of or all large oil guns quit one by one according to the pulverized coal combustion situation, and at the load rising stage, powder manufacturing systems are put into operation layer by layer according to the load situation. According to the method, the temperature rising rate of a heating surface of the boiler in the starting process can be controlled, and the good combustion effect of the pulverized coal in a hearth can be guaranteed; and generation of pipe oxide kin of the heating surface of the boiler is effectively prevented, and the purposes of preventing secondary combustion of the tail flue and the detonation accident of the hearth can be achieved.

The invention discloses a manufacturing process of a grinding, casing milling and well repairing tool. Firstly, a to-be-machined casing is sleeved with a mold, the end portion of the mold is provided with inner edges extending towards the axis, and gaps are reserved between the inner edges and the end face of the to-be-machined casing; after the to-be-machined casing and the mold are preheated to a surfacing temperature, the end face of the to-be-machined casing is coated with soldering flux, and surfacing of priming weld layers is started; YD hard alloy particles are subjected to horizontal surfacing in the gaps; and after the surfacing is completed, the mold is dismantled, the welded tool is subjected to postwelding heat preservation and is cooled after heat preservation is performed for a period of time, and welding is completed. A filling material can flow in the gaps between the mold and the casing due to the welding manner, the particles are distributed evenly to achieve the purpose of the horizontal surfacing, the above welding temperature is stable, the temperature loss is avoided as much as possible, the welding strength and the welding efficiency are improved, and therefore the impact toughness, the abrasion resistance, the service life and other indexes of the tool are improved. The invention discloses the mold for manufacturing the grinding, casing milling and well repairing tool at the same time.

The invention discloses a surface coating device for new energy power components. The invention relates to the technical field of new energy machinery and includes a base. Vacuum equipment, the top of the inner side of the tank is fixedly connected with a bombardment mechanism, the upper position of the surface of the bombardment mechanism is fixedly connected with a dust suppression mechanism, the bottom of the inner side of the tank is fixedly connected with a stirring mechanism, and the top of the stirring mechanism is fixed A mixing mechanism is connected, said bombardment mechanism comprising a connecting wall. The new energy power component surface coating device solves how to separate and effectively stir the protective gas of each component through the combined use of the stirring mechanism, the mixing mechanism, the bombardment mechanism and the dust reduction mechanism, and the coated component and the carrying platform The surface in contact cannot be coated, and how to make the evaporated ions of the target material fully contact the surface of the electrical component.

The invention provides a separation process of ethylene-rich cracking dry gas and for an ethylbenzene production device and belongs to the field of petrochemical industry. Through coupled processes ofmembrane separation, compression condensing and rectification, the ethylene-rich cracking dry gas is separated into a low-concentration ethylene raw material and a high-concentration ethylene raw material which are respectively used for a dry-gas-process ethylbenzene production device and a high-pressure liquid-phase process ethylbenzene production device. Through graded use, the problem that a reactor for preparing ethylbenzene through dry gas exceeds temperature is avoided, sufficient and reasonable utilization of high-concentration ethylene is realized, and ethylbenzene production energy consumption can be lowered remarkably. A preposed membrane separation unit can deeply dewater, stable low-temperature condensing can be ensured, most hydrogen can be removed, carbon binary pressure canbe increased, and cryogenic energy consumption can be lowered remarkably; reasonable depressurizing gasification and cold recycling of demethanation liquid-phase products are realized, and refrigeration needs are reduced remarkably.