large factories light oil-fired hot water boilers
The main difference between the fuel gas boiler thermal control of the basic requirements of fuel gas boiler room in claim 1. The thermal control of the basic fuel gas boiler fuel gas boiler main features of the gas boiler grate firing combustion system is different in that, mainly in the nature of the fuel and combustion different. Fuel gas boiler combustion system has the following two characteristics: 1) If not properly controlled combustion process, the furnace can form a large number of combustible gas mixture, when mixed gas deflagration, the furnace may cause an explosion, causing heavy casualties and property losses. 2 combustion) of fuel gas boiler combustion space, the combustion speed, load responsive. 2. controlled boiler fuel gas and fuel gas requirements of the boiler combustion system adapted to, the following basic requirements for the fuel gas boiler automatic control system: (1) reliable system configured to prevent fuel gas boiler explosion, the design of the fuel gas boiler when automatic control system must be designed to give priority to the reliability of a system, the detection system may employ protective control system provided separately, if necessary. In the selection of microcomputer control system, it is necessary to adopt a dual configuration instructions manual and the necessary back-up of important parameters such as measures to improve the reliability of the control and protection systems. (2) starting the program control strict fuel gas boiler shutdown should process control, rigorous testing of the fuel during the start-stop system, air supply system and a flame monitoring system, since a failure to avoid the shutdown process. (3) timely protection should be reported depending on the circumstances, the choice of the following associated with the combustion system alarm and interlock protection projects: 1) drum level limit alarm and interlock protection. 2) Overpressure drum (temperature of hot water for boiler overtemperature) alarm and interlock protection. 3) flameout interlock protection. 4) Low oil pressure interlock protection (oil-fired boiler). 5) high oil temperature interlock protection (oil-fired boiler). 6) low oil temperature interlock protection (oil-fired boiler). 7) Low gas pressure interlock protection (gas boiler) 8) Interlock high gas pressure (gas boiler). 9) wind down interlock protection. 10) Burner flange interlock limit switch. 11) combustible gas leak alarm. 12) earthquake interlock protection. (4) a fast system response when running the fuel gas boiler abnormal combustion flame is off, the automatic control system required to be quickly cut off the fuel supply, to prevent the fuel into the furnace, thus requiring automatic control system fast enough response speed. (5) When the load adjustment linkage fuel gas boiler load changes, fuel regulator response speed faster than the response speed of the air supply system. When the load suddenly increases, the rate of increase of fuel greater than the corresponding rate of increase in the amount of air, resulting in incomplete combustion, soot is produced; when the load is reduced suddenly, fuel reduced speed, resulting in high oxygen smoke. For small boiler-off control of combustion increase or decrease should match the amount of increase or decrease in the wind, or it may cause flameout. Thus in the design of automatic control system, should be considered synchronized adjustment of combustion air. (6) field instrumentation for explosion-proof gas boiler automation systems, field instrumentation should be used in explosion-proof instrument.
In October 2016, my company and the China Dunhuang International Hotel signed a ZWNSL2.1-1.0 / W-Y.Q vacuum condensing gas large factories-fired hot water boilers to provide heating and hot water for the hotel. The boiler implementing the response to the national policy of environmental protection requirements and local environmental protection departments on a series of low nitrogen emission standard boiler requirements, in terms of design, manufacture, installation and other sectors have strict checks to ensure that the boiler safe and stable operation.
Fuel steam boiler fuel steam boiler: Features: 1. Reburning fuel steam boiler corrugated liner tee horizontal central fire tube structure absorbs most of the heat, high temperature flue gas when the flue gas reaches the wheelhouse, may be reduced to 720. deg.] C, lower than 400 deg.] C or more other structures, thus greatly improving the the operating conditions of the boiler tube sheet area evenly heated. The present invention reduces the scale of production, prolong the service life; burning back at the center of three-loop configuration, when the return uncombusted portion two loop complete combustion at high temperature, the fuel can be burned again, generation of NOx is reduced, saving energy, effective protection of the environment. 2. The use of threaded pipe, a corrugated liner, advanced technology and good thermal expansion properties, clever use of the thermal expansion of the inner bellows and cold shrink, strong turbulence and good interference properties, high heat transfer coefficient, high thermal efficiency. three. Expansion tank located in the upper boiler, the water level to facilitate inspection and an exhaust port having a diameter of 400mm, to facilitate inspection and maintenance the boiler internals. 4. The introduction of Western Europe original combustion engine and automatic computer control devices, reliable operation of computer disk unit over-temperature protection, water protection, fault protection and self-flame burner malfunction alarm functions, ensure that the boiler safe and normal operation; respectively combustion machine the first stage ignition and the second stage ignition control, and record the operating time of the burner, in order to ensure economical operation of the boiler, reducing fuel consumption. Temperature control set free, clock function, the oil level control, automatic fault-point display, 04: 00 to facilitate the daily time switch functions, operation and management. The direct heating to produce hot water, the heat exchanger may be used in a multiple stage machine. The heating temperature can meet different requirements, to provide a hot water bath. 6. It can be used with a heat exchanger, in order to meet the needs of high-rise buildings; water-cooled grid, cool, less investment, effective, and long service life. 7, after the wet structure, hinged front panel open structure, easy maintenance and repair. Eight. Atmospheric design, absolutely safe; smoke-free clean, in line with national environmental requirements. 9. The outer mirror stainless steel or cold spray, nice.
Matters needing attention in installation of Gas-fired BoilerGas-fired boiler also says that gas-fired heating boiler is a kind of boiler which uses gas combustion to heat water to satisfy people's heating. It belongs to the category of domestic boiler. By gas-fired heating boiler we usually refer to gas-fired atmospheric large factories-fired hot water boilers, gas including natural gas, liquefied gas, city gas, coke oven gas, biogas and so on. There are explosion-proof doors on the rear of the fuel-fired boiler or on the smoke pipe, and the position of the explosion-proof doors should be conducive to the discharge of the explosion. In cases where explosive gas may endanger the safety of operators, a pressure relief guide tube shall be installed on the explosion-proof door. The installation of boilers, auxiliary machines and water treatment equipment shall be in accordance with the technical requirements of the equipment manufacturing plant. . The equipment foundation must wait until the equipment arrives and checks correctly with the design drawing before construction. 3. When installing the equipment, avoid the equipment, and the installation material should be stacked on the floor. When using building column, beam lifting equipment, the bearing capacity of beam and column must be verified in advance. 4. After installation of oil, gas, hot water and steam pipes, the pressure test acceptance shall be carried out according to the Code for Construction and acceptance of Industrial Metal Piping Engineering GB 50235 / 1997.