5results about How to "Large adjustment ratio" patented technology

The utility model relates to an SNCR (selective non-catalytic reduction) denitration high-kinetic-energy long-distance spraying and atomizing spray gun which comprises a spray gun pipe with the length not less than 1m, a spray gun nozzle is arranged at the front end of the spray gun pipe, the rear end of the spray gun pipe is connected with an atomizer, an atomizing cavity is arranged in the atomizer, the front end of the atomizing cavity is communicated with the rear end of the spray gun pipe, and the atomizing cavity is communicated with the spray gun pipe. The rear end of the atomizing cavity is communicated with the compressed air channel, and a liquid atomizing nozzle is arranged on the side wall of the atomizing cavity. According to the utility model, the liquid is efficiently atomized under the mutual shearing action of high-speed gas and low-speed liquid in the atomizing cavity, and then the atomized reducing agent is pushed and conveyed to a destination through high-pressure compressed air or steam, so that the effect of mixing the reducing agent and flue gas is achieved. The spray gun has the advantages of wide adjustment ratio, good atomization quality, low gas consumption, small change of an atomization taper angle along with working conditions and the like.

The invention relates to the technical field of rockets, in particular to a regulating valve, an engine and a rocket. The regulating valve comprises a first valve body and a second valve body, a fluid channel is formed in the first valve body, a first valve seat and a valve element are arranged in the fluid channel, a first grating structure is formed in the first valve seat, and a second grating structure is formed in the valve element; the driving mechanism is connected with the valve element and used for driving the second grating structure to move, and a flow channel with the overflowing area steplessly adjusted is formed between the second grating structure and the first grating structure. According to the regulating valve, the engine and the rocket, the driving mechanism drives the second grating structure to move, stepless regulation of the gas flow can be achieved, the regulation ratio of the regulating valve is increased, and therefore the requirement for precise control over the flow of a rocket propellant is met.

The utility model discloses a premixer with a high regulation ratio and an energy-saving environment-friendly water heater, the premixer comprises a shell, an air inlet, an air adjustable inlet channel, an air straight-through inlet channel, a premixing cavity, a fuel gas inlet and a regulation baffle plate, the air adjustable inlet channel is provided with a fuel gas inlet channel, and the air straight-through inlet channel is provided with an adjusting baffle plate; the fuel gas inlet channel is provided with a fuel gas inlet adjusting opening facing an opening of the premixing cavity, and the adjusting baffle is used for adjusting the gas circulation area of the air adjustable inlet channel and the fuel gas inlet adjusting opening. According to the premixer, the air adjustable inlet channel, the air straight-through inlet channel, the fuel gas inlet channel, the premixing cavity and the like are improved, and the adjusting baffle is used in cooperation, so that the adjusting baffle can dynamically adjust the air inflow of air and fuel gas along with the pressure difference change in the cavity, premixing is conducted in the premixing cavity, and the air and fuel gas mixing efficiency is improved. The water heater can adopt a more reasonable combustion proportion, the adjustment ratio of soft fire is wider, the water heater can adapt to different air sources, temperature control is more accurate, and bathing is more comfortable in summer.

The present invention discloses a vertical water pipe built-in premixed membrane wall cooling burner and a gas boiler, the gas boiler includes a burner, a furnace, a heat exchanger and a flue; the burner adopts a combustion mode of built-in premixer and membrane wall cooling, with a central side-by-side tube bundle or an arc side tube bundle as the burner head, the furnace is two semi-cylindrical spaces surrounded by the burner and the heat exchanger, the heat exchanger is a water pipe bundle connected to the upper and lower annular headers and expanded along 1 to 3 circles of circular arcs; the burner and the heat exchanger can be swapped; after the premixed gas is burned by the burner, the flue gas generated flushes the relative heat exchange area and is collected and discharged by the flue. The present invention has a compact structure, low resistance and high heat exchange efficiency; the gas flow is short, the mixing and distribution are uniform, explosion-proof, and the safety is high, and it is suitable for the blending of natural gas and low / zero carbon fuels and the combustion of pure fuels; the combustion temperature is low, the load is uniform, the adjustment ratio is large, and the NOx emission is low; the burner and the heat exchanger are connected to the header by an integral or partially detachable flange, and the maintainability is high.

The utility model discloses a double fluid spray system, this double fluid spray system includes: pump station system and spray gun, and pump station system includes liquid path device, gas path device, control cabinet and spray system pump station, and liquid path device is connected spray system pump station through water inlet pipe, and gas path device is connected spray system pump station through air inlet pipe, and spray system pump station is connected with the water ring pipe and gas ring pipe among humidification device through water path pipeline and gas path pipeline, and humidification device still is installed heat resistance, and humidification device is humidification tower or humidification pipeline, and three heat resistances are arranged on humidification device, and eight spray guns are arranged on water ring pipe and gas ring pipe, and four are not controlled spray guns, and four are the spray gun of being controlled in group. Through the work of eight spray guns, four are not controlled spray guns, and four are controlled spray guns, have the advantage that the working condition is adjusted flexibly, and the adjustment ratio is big, and atomization quality is high, and the demand of system is satisfied.