In recent years, Hebei Province People's Government to respond positively to Blue Sky Battle action plan promulgated by the state, and all of 35t / h coal-fired boiler and below in the Hebei province out of the transformation process. First Hospital of Baoding respond positively to the call of the provincial government, eliminate serious pollution of the original coal-fired boiler hospital, citing energy saving steam boiler to natural gas as raw material. After a series of market research, WNS Series Split hospital condensing gas boiler boiler other fast soft spot.
WNS type gas steam boiler 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
10 tph WNS series gas-fired steam boiler renovation project for Urumqi Railway
ZOZEN has played an active role in promoting the process of "coal to gas". In particular, the WNS series of gas-fired steam boilers have gained a good reputation in the industry due to their safe and efficient performance. This gas-fired boiler features compact design and is equipped with boiler control, alarm and interlocking devices of water level and steam pressure to ensure safe and reliable boiler operation. And the large-diameter corrugated furnace and high-efficiency heat-conducting threaded tubes increase the heating surface. With the energy-saving device at the tail of the flue, the exhaust gas temperature is reduced below 60℃, and the thermal efficiency is as high as 98%, helping clients achieve their goal of energy saving and emission reduction.
SUMMARY gas steam boiler maintenance gas boiler twice monthly maintenance inspection item A. Fuel supply line: a filter cleaning gas oil; ignition gas conduit 2 airtightness inspection; 3 checks whether the flow line... B. inspection of the instrument: a flushing water table; 2 Syphons flushing; valve experiment. C. Check burner:.... The flame detector (photocell) cleaning the light receiving surface; second inspection oil pump pressure is normal; 3 checks the combustion flame is normal; 4 check burner, the burner sound is abnormal; 5 Cleaning revolutions cup; 6 o'clock washing water rod. . Check D. Intake system: a washing water filter; 2 reaches rated pump head and flow; 3 a check valve is working properly... E. daily drainage tank and the cleaning debris. Water quality testing, water testing furnace. F. Check the combustion consumption is normal. Every three months in addition to the maintenance items plus the inspection item inspection items: Electric Part A: 1 line is loose aging, failure; 2 check the reliability of electrical components, overload; Protection relay 3 is normal; B.... open soft low deactivation tank valve exclude sludge; C to test the boiler and then point interlocking means: 1. low water position; overpressure 2; 3 flameout 4. The exhaust gas temperature ultrahigh; D. et quality tobacco. detection: analysis of tobacco smoke constituents comprising temperature detecting tail, combustion is working properly checked. E. burner and boiler cleaning outer cleaning. Paul A. large projects each year hosts a body part of a comprehensive clean-up tobacco pipes, water pipes, front and rear smoke box, part of the furnace and the burnout chamber and smoke tubes ash collection. 1. inspection openings comprehensive inspection hole hand hole, manhole sealing soundness, and timely replacement of defective seals. 2. The overall comprehensive testing instruments, valves, comprising detecting pressure gauge and safety valve, the pressure controller and the electrode level controller tuning. Part B. burner: Burner cleaning turn round cup, ignition means, filter, pump, motor and impeller systems, throttle link means to add a lubricant. Re-awarded for combustion testing. C. access control section detecting electrical components, control lines, the control box clean ash collection, each control point is detected. D. water supply system maintenance water treatment plant to check whether water quality standards, a comprehensive clean soft water tank, to check the functioning of the pump and lift, clean check valve spool and so on.
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