4results about How to "Improve oxygen removal efficiency" patented technology

The utility model provides a deoxygenization device for a steam circulation system, which comprises a water tank and a deoxygenization head mounted at the top of the water tank, the deoxygenization head is internally provided with a rotating film device, a water spraying assembly and a filler liquid steam net from top to bottom in sequence, the top of the deoxygenization head is provided with an exhaust port, the side of the deoxygenization head is provided with a water inlet and a steam inlet, and the water inlet is communicated with the water tank. The water inlet comprises a condensed water inlet and a make-up water inlet which are communicated with the rotating film device, and a high-pressure heater drainage inlet formed above the water spraying assembly, and the steam inlet comprises a first-stage steam inlet communicated with the rotating film device and a second-stage steam inlet formed below the filler liquid-steam net; the high-pressure heater drainage inlet is connected with a water inlet pipe, and the water inlet pipe comprises a water inlet connector and a flow stabilizing cover arranged at the tail end of the water inlet connector. According to the deoxygenization device, the water inlet pipe is arranged at the high-pressure heater drain water inlet, the flow stabilizing cover is arranged at the tail end of the water inlet pipe, the high-speed flow state of high-pressure heater drain water is changed, and the deoxygenization rate and the system operation stability are effectively improved.

The application provides a deoxidizing agent suitable for medium and high pressure boilers and a preparation method thereof, wherein the deoxidizing agent contains the following raw materials in parts by weight: 20-40 parts of an organic reducing agent, 10-20 parts of an amino heterocyclic compound, 4-8 parts of a hydroxylamine compound, 2-8 parts of a dispersing agent, 3-6 parts of a neutralizing agent, 2-6 parts of modified sodium alginate, 1-3 parts of modified lignin and 20-40 parts of deionized water. The deoxidizing agent is high-temperature resistant, has outstanding dissolved oxygen removal capacity, is suitable for a medium and high pressure boiler water supply system, has a corrosion prevention effect, solves the corrosion problem of boilers, pipelines and heat exchangers, and is environmentally friendly, safe, almost non-toxic and harmless, and has a good market prospect.

A gantry integrated additive and subtractive composite manufacturing equipment, comprising a machine tool base, a forming platform connected above the machine tool base, a 3-axis gantry milling subtractive device arranged in a sealed forming chamber, a powder feeding mechanism, a powder laying mechanism and a tool magazine installed on the forming platform, a forming base plate arranged in the middle of the forming platform, the forming base plate being connected with a forming cylinder, the forming cylinder being located inside the machine tool base; an optical path system mounting plate is arranged on the upper part of the sealed forming chamber, and an optical path system of an SLM additive device composed of a laser, a beam expander collimator, an optical lens module and a laser galvanometer is arranged on the optical path system mounting plate, the laser galvanometer being opposite to the forming base plate; the 3-axis gantry milling subtractive device and the tool magazine cooperate to realize tool changing; the size of the sealed forming chamber is reduced, the function of adding metal powder during the machining process is realized; the quantitative powder feeding and powder laying functions are realized; good motion sealing performance is achieved, and the machining precision of complex part structures is improved.

The utility model discloses a nozzle for oxygen -removing apparatus, including fixed base, the inner wall fixedly connected with bearing of fixed base, the inner wall fixedly connected with the rotating tube of bearing, the top fixedly connected with connecting rod of rotating tube, the top end equidistance fixedly connected with fan blade of connecting rod, the inner wall top end of rotating tube is provided with the taper mouth, the outer side equidistance of connecting rod is provided with the inner hole of rotating tube, the both ends of inner hole are linked with the bottom of taper mouth and rotating tube respectively The utility model relates to the technical field of boiler oxygen -removing apparatus, solve in prior art, the nozzle for oxygen -removing apparatus is directly fixed in the bottom of water supply pipeline, in the use, the ejection direction and angle of water flow and steam are more fixed, cause the mixing effect of water flow and steam to be undesirable, influence oxygen -removing efficiency and heat exchange effect to high equipment energy consumption problem of leading to.