Hot water boiler for users to solve the "coal" urgent at present, energy conservation and building sustainable economic model has become a national priority, but only our coal utilization hovering around 30%, far below the 78 % of the international average. Steam boiler is an energy conversion device, the energy input to the boiler fuel chemical energy, electrical energy, thermal energy and other forms of high temperature flue gas, and after converting the boiler, the steam output having a certain outside thermal energy, high-temperature hot water or an organic carrier. Biomass boiler categories: biomass boilers Horizontal, vertical biomass boilers. Biomass gas thermal oil heaters, biomass drying steam boiler manufacturers, biomass hot water boiler, biomass oil furnace. Gas-fired steam boiler burner underlying mode, two-pass configuration, the fuel combustion, the boiler operation is stable and take up less space, while the spoiler is inserted smoke tube, smoke slow speed, increase heat transfer, a high thermal efficiency, reducing user fees Therefore, improving the utilization of coal combustion has become essential. Currently, coal-fired hot water boiler control system to achieve precise control and real-time monitoring. By controlling the water temperature, the fan speed to achieve a controlled, to ensure the stable combustion furnace pressure and coal, which saves coal, but also to ensure safety. Industrial production in the boiler and heating primary energy into secondary energy of important equipment, has been widely used in industrial production and daily life. Coal-fired hot water boiler control scheme is reasonable and convenient way to monitor, steady state operation, the whole process of thoughtful service, users get a good feedback. I believe in the future, coal-fired hot water boiler intelligent control scheme can serve a wider field of industrial production, as well as hotels, schools, hotels, residential heating, bath, hot water and other fields, coal cost savings for users, improve combustion efficiency, ensure the safe operation provide a solid guarantee. Completely solve the problem of long-term accumulation of the user, the water temperature stable. Water temperature set by the ambient temperature, grate speed difference adjustment according to the actual water temperature and the set temperature of the water, i.e. adjusting the amount of coal boiler, to ensure the stability of the water temperature. Outstanding energy saving. Grate speed changes to the feedforward signal, in conjunction with flue gas oxygen content signal or the furnace temperature, blower speed control using the PID algorithm, to ensure full combustion of the coal, to improve the utilization of coal, reduce emissions of harmful substances. Excellent safety performance. To change the fan speed as a feedforward signal, the PID control calculation and induced draft fan speed according to the furnace pressure value, to ensure the stability of the furnace pressure. This paper introduces a control algorithm based on the level of intelligence of the new big jump lag PID. After control of embodiment, given a certain waiting time to observe the effect, and to determine whether further embodiment control, multi-parameter input and multiple output control mode based on performance parameters.
November 5, Ministry of Industry announced the latest "national industrial energy-saving technologies and equipment Recommended List (2018)", the star product of fast boiler - premix wing-type vacuum condensing hot water boiler, with ultra-low nitrogen oxide emissions and excellent energy-saving effect with this honor. "Energy saving" was first presented in the "" Eleventh Five-Year "Plan", the entry point to do by reducing energy waste and reduce emissions in terms of both economic development and adhere to common development and environmental protection. Since 2015, the state has increased efforts to promote energy-efficient technology and equipment, mechanical and electrical products each year in all types of energy-saving aspects of the work of judges, party fast with a strong technical ability to create many types of environmentally friendly products, as the heavy regulars honor.
WNS type gas drying steam boiler manufacturers system control principle: ①, after WNS type gas steam boiler on the power switch, click on the pump control switch open position, after boiler feed water rises to the normal position, click-burner power switch, clicking the start button, the control system power is on, the burner into the working state, according to the operation program for the controller, to be re-ignition burner fires into the combustion state, the boiler enters normal operation this stage. ②, high output level when the water level rose to a high level alarm signal indicator light, when the water level rises to the pump stops running + 25mm, the water pump when the water level falls -25mmm automatic restart, when the water level falls -50mm, outputs a low level alarm indicator light, with bell sound, and cut off the power to the controller to achieve protection shutdown, -75 mm when the water level falls, the output signal of low water level indicator light. ③, when the pressure is raised 0.73MPa, the output signal of the first indicator light overpressure, combustion conditions and off the controller circuit, the controller stops the shutdown. Output when the pressure rises above a second overpressure 0.75MPa signal issued bell sound, alarm and cut off the power supply control system implemented emergency stop. Regulating the pressure when the pressure exceeds the upper limit, the controller output signal of a small fire fire closed valve, a valve to open the small kerosene ignition burner. When the lower limit pressure drops below the regulated pressure, the controller outputs the fire signal to open fuel valve fire, the fire to burn. ④, after the failure of the burner failure occurs, the burner control valve is automatically shut down to stop the oil combustion. Vertical coal-fired steam boiler structural features
Gas boiler which has few parts of the main gas boiler: the enclosed pipe chimney pipe tube sheet base gas outlet steam dryer Confining the majority of the peripheral tubes to form a complete gas boiler. The main effect of gas boiler: the combustion of the fuel is heated by the feedwater temperature and the exothermic heat of the flue gas with a heated surface, so that a final water into superheated steam having a quality of qualified certain parameters. The water in the boiler to go through preheating, evaporation, overheating in three stages in order to become superheated steam. In fact, in order to improve the efficiency of the steam power cycle, there is a fourth stage, i.e. re-superheating stage, soon after the high pressure turbine expansion work to reduce the pressure and temperature of the steam back to the boiler is heated and then sent to the low pressure turbine cylinder continues to work. In order to meet these four phases change, the boiler must be arranged in the respective heating surface, i.e. the economizer, water wall, superheater and reheater. Superheater and reheater disposed in an upper horizontal flue backpass and functions of the fuel system is to ensure the desired fuel burner. The fuel oil burner system are: tubing and fittings, pumps, solenoid valves, nozzles, heavy oil preheater. The gas burner mainly a filter, pressure regulator, solenoid valve, and then firing solenoid valve, the fuel valve. Economizer disposed in the lower back pass. In order to utilize flue gas heat of heated air required for combustion, usually air preheater arranged after the economizer. Some additional preheating large boiler superheater heating surface or in the furnace, and then heat-receiving surface.Free Chat
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