https://www.myziyuan.com/
- hwlsz
- 一，填充坯料（师）1，空气供应油泵锁定启动条件有鼓风机运行油泵（停止），鼓风机控制油压（低），低于（1.3mp）的备用油泵，润滑油压力低于（0.08MPa））。停止允许条件是空气停止延迟（30s）和轴承温度（<70 ° C), (two oil pumps) is operated and the blower (control oil pressure) is not low. 2, the water capacity at the boiler water pressure test is ( 575 m3), the water capacity of the boiler is (188 m3). 3. Under the BMCR working condition, the reheat steam advances (3.87 / 3.67 MPa), the water temperature is (279.3 ° C), the superheated steam pressure is (17.4 MPa). 4, the conditions for the MFT relay reset are: (MFT relay power supply is normal), (there is no MFT trip condition), (the furnace is blown). 5, after the furnace is heated, when the furnace temperature is heated to (100-120 ° C) or (boiler ignition), the value is reported to stop the bottom heating. After the boiler is hot, after stopping heat, each record (expansion indication) once. 6. When a single fan is stall, it should immediately (off small) atmospheric moving leaf blanket. 7. The boiler body is blowing as a unit load (210mW) or more. If the boiler is poor, the electric coal ratio exceeds (1: 6), and the boiler should be stopped immediately when the furnace flue gas temperature decreases. 8, during the boiler body and flue blow ash process should be tightly monitored (empty preserved current), (empty premium entrance, one or two winds) pressure difference, (flue gas) differential pressure parameters, prevent empty preservation bursts Block. 9. The main factor affecting the change in water is (boiler load), (combustion conditions), (water pressure). 10. Quality of pulverized coal is mainly referred to (pulverized fineness), (uniformity) and (moisture). 11. In the boiler operation, the secondary wind rate should be controlled (60 ~ 70%). Normally, the temperature of the wind is not less than (30%). In any case, the oxygen content in front of the empty pre-instrument shall not be lower than (2%). 12. In the hot loss of the boiler, the largest (exhaust) is heat loss. The main factor affecting its loss is (exhaust temperature) and (exhaust). 13. The gas source of the thickness of the coal-thickness unit is (compressed air), effect (measurement) and (purge). 14, when the emission entrance to smoke(120 ° C) When the air preheater is stopped, when the furnace exit smoke is less than (80 ° C), the fire is stopped. 15. When the slip parameter is stopped, the average temperature restriction rate is controlled (0.5 ° C / min ~ 0.8 ° C / min), and the maximum does not exceed (1 ° C / min). The load change rate does not exceed (3 mW / min), and the main vapor pressure drop rate is controlled (0.05 ~ 0.1 MPa / min). 16. The blower sub-set stops There is a blower motor leaf (minimum <3%), (stop) the air motor, (off) the air outlet electric baffle. 17, a fan protection has (MFT) signal, one wind turbine before and after Bearing temperature alarm value (90) Trip value (≥100 ° C) delay (3s). A wind turbine motor front and rear bearing temperature alarm value (85) trip value (≥95 ° C) delay (3s). One fan motor stator winding temperature alarm value (130) Trim down value (≥135 ° C) delay (3S) 18, primary fan protection has a fan bearing vibration (horizontal, vertical) alarm value (6.3): Trip value (≥11) Delay (3S). The exit electric damper (all customs) is exit 120s after the fan runs. Two oil pump (full stop) without delay trip, the hydraulic oil pressure () without delay tripping. This side empty pre-preserved (main motor or auxiliary motor) is stopped. 19. The fuel oil used in our factory is (# 0, # - 10). 20, large oil gun atomization (simple mechanical atomization) oil gun force (750) kg / h (12) only. Oil micro pulverized coal burner gun atomization (spray nozzle) oil gun output (single) 120 (100-150) operating pressure (0.8 to 1.2) Total Number of (8) (2 per corner) 21, a combustor when the alignment of the sections on both sides of the flue gas temperature does not exceed the flue (50) ℃. When two blowers are running, it should be maintained (balanced). 22, when the boiler burned normally, observed the flame (golden) color, no obvious Mars, fire inspection (no blinking); 23 Perform boiler body and flue steam blowing. 24, the boiler MFT should be placed in the perimeter wind door, the burning wind doors, and all the second wind turbines in (purge position, ready-to-open) position 25, and the adjustment of the steam temperature should be mainly (the flue gas) side, (steam Edward 26. If the boiler MFT action is fire extinguishing, it should immediately confirm the MFT action.The first reason, and confirmed that all fuels have been completely cut, otherwise manual intervention is closed (the furnace fuel gas pipe is returned to the oil speed valve) (all angle oil gun speed valve). All (powder systems) stop, coal separators (export fast valve) are closed, and each separator (blown door) is closed, (hot, cold) damper is closed. (A, b once) the fan joint. 27, when the furnace exit temperature is greater than (540 ° C) or (unit grunger network), the soot temperature probe automatically exits. 28, three-tiered return air preheater heat storage element is (enamel) and (carbon steel) heat storage element. 29. When the water on the boiler, the water should be slow, uniform, and the water flow is controlled in (80 to 120) T / h. (Winter water time is controlled in the winter, summer control in ≮ 2 hours) If the water temperature is adjacent to the carbag wall temperature, it is possible to properly increase the water speed, but should always maintain the temperature difference of the lower wall temperature of the air bag is not more than (56 ° C). 30. The air volume (30% - 40%) BMCr is blown by the boiler furnace, 5 minutes, and maintain the furnace outlet negative pressure (-50-- -100) PA. Second, the short answer (minute) 1, after the MFT action, the adjustment and precautions when the parking furnace does not stop the boiler ignition? 1) The boiler ventilation is over, will lead, the blower is adjusted, the total air volume satisfies the ignition requirements, adjust the negative pressure-50 ~ -100Pa, and the boiler reflvested as soon as possible. 2) Shutnating a fan early, sealing the fan operation, open the A1 layer separator outlet pneumatic shutter, full open A mill mixing damper, slightly open A coal-free machine thermal exhaust door and both sides capacity The wind doors, turned on the coal mill, controlling the amount of ventilation in the coal mill, prevents sudden massive pulverized coal from entering the furnace, adjusting the perimeter of the A million of 35% - 45%. 3) The diagonal is invested in two oil guns to adjust the opening scale of the A layer micro oil unit oil supply to ensure the oil pressure of the micro oil system. The body of the gun should be normal. 4) After the microf oil is in normal, start the A coal mill operation, due to a large amount of powder in the grind, should pay attention to the control of the capacity damper should be gradually opened, prevent sudden increase in powder, pay attention to the control of heat load, prevent the mainstallurgical pressure rise The overheating of the main vapor temperature is lowered, and the control of A is grinded to the coal, and the normal coal level of the grinding machine is maintained. 5) If the boiler burning is not or the oil gun is not angry, replace other layers of oil guns in time. After the pour, adjust the AB layer secondary damper opening degree 40 ~ 50%. Ensure that the burning is good, preventing the steam temperature dropping too fast. 2, stop furnace does not stop the boiler, warming, step-up period operational main points and precautions 1) should pay attention to the temperature of the steam temperature matches the cylinder metal temperature, pay attention to the change in temperature difference, and the stop value should be stopped. 2) Pay attention to monitoring unit vibration, axial displacement, inflation, bearing temperature and other parameter values in the normal range, to protect the action when the stop value is maintained, otherwise it should be manually stopped immediately. 3) Check the generator seal oil system, hydrogen cooling system is operating normally, oil note - the hydrogen pressure difference variation to maintain oil - hydrogen differential pressure in the normal range. 4) After the boiler is ignited, as the flow of cold steam in the furnace, the re-heat steam temperature still has a falling process, but the steam pressure will rise, the main steam heat loss will drop, at this time, the post-florat is opened. Containers and overheats are hydrophobic, and must not operate on the side of the plane. The main steam overhelation should be strictly monitored. When the coal is increased, the rapid increase in steam pressure should be prevented from being rapidly decline. At this time, the boiler EBV valve can be opened, and the increase in the control of the main vapor pressure is not lowered. 5) When the main steam is stable and after the main steam is rebounded, the unit is loaded according to the pressure rising speed. However, it is necessary to do the following coordination: When the load is too slow to cause a decrease in steadyness of the steam pressure, the load is too fast to cause the unit load imbalanced air temperature drop, so the load speed is maintained to maintain the stability of the main steam pressure and the main vapor temperature does not reduce the principle. . 6) The boiler steam is lowered, the parameter begins to pick up, and the parameter is restored to the front parameters before the jumper, the boiler can heat up as soon as possible, gradually increase the grinding machine force and the number of runners, the boiler is warmed up the boost speed, manual increase The motor valve position gradually increases the vehicle load. 7) Restoration, boiler parameters are a rapid rise process, to prevent overwesome. The load is raised to 60 mW - 80MW to stabilize for 20 minutes. To turn heated electric door before each cut, according to exit steam temperature levels, adjust the temperature reduction of water to prevent overheating. During low load stages, the amount of water is too large. 8) When the load is rising to 50MW, it should be switched in time to switch the plant by the unit, according to the steam pressure, restore the normal operation of the two steam pump as soon as possible. 9) After the boiler is extinguishing, when the load is low, it should be noted that the boiler main steam pressure cannot be too high, preventing high pressure of high steam overheating is low. Try to shorten the boiler recovery time and prevent the boiler heat storage capacity, resulting in unit parameters. 10) During the boiler recovery process, if the air supply level or main steamThe heat of the vehicle cannot be maintained, and the shutdown should be immediately turned to prevent damage to the steam turbine. 3, blower allowable start conditions: 1 in the same side empty preservation run 2 concentric wind turbine operation 3 lubricating oil station work normal 4 fan bearing temperature <80 ° C 5 motor bearing temperature <85 ° C 6 motor coil temperature <110 ° C 7 outlet block Pan 8-moving leaf <3% 9 air blower motor is in the remote control state 10 No comprehensive fault 4 The air motor blower is delayed for 15 seconds, and the fan exit electric baffle releases the moving leaf 5, the primary fan allows the start condition: empty preserved main motor or the auxiliary motor has run a fan in the remote control state once the wind turbine Ye Guan once fan Export baffle Tong side air machine running on the same side blower running a fan without comprehensive failure One fan motor bearing temperature is not greater than 85 ° C primary fan bearing temperature is not greater than 90 ° C Temperature Motor winding temperature is not more than 125 ° C oil pump operation, hydraulic pressure is normal 6, air preheater main drive motor start condition: empty preserved variable frequency cabinet in remote control mode empty preserved master (secondary) # 1 power supply no abnormal empty presser main (secondary) # 2 power supply no abnormal empty pre-instrument master ( Secondary) Motor No Fault Fire Test Probe Fault (Type) (ie the probe is not faulty) No fire alarm empty preserved (main) motor does not run empty preserved support bearing and guide bearing temperature Normal motor oil pump start 7, air preheating Protection (chain): Air preheater guide bearing oil temperature high 70 85 air preheater thrust bearing oil temperature high 70 85 air preheater fire alarm point temperature high, fire alarm 250 air preheater export smoke 145 air preheater import and export flue gas differential pressure 0.9A empty orthogonal ingredients Import and exit secondary wind differential pressure 0.8A empty ortho import and exit primary pressure 0.34 Guide or support bearing temperature greater than 55 degree cooling oil pump chain start guide or Supporting the bearing temperature less than 45 degrees Cooling oil pump chain stops operation 8, empty preserved main or secondary motor overcurrent causes and processing: Cause: Motor overload or transmission failure; seal too tighten or rotor bending card; foreign matter enters stuck; Or support bearing damage; the empty kettle is fired; the components are rutyed with the rotor end face with the sector plate. Treatment: If the current is too large, the motor is overheating, and should immediately report the value long, put the oil gun to help, stop the partial abrasive machine, reduce the load to 150MW, the same side delivery, air machine, close the side empty pre-preservationOut, the entrance wind blowing plate, the temperature of the smoke is lower than 200 degrees, stopping its operation, contacting the maintenance; if the rotor end face is too tightened with the fan plate friction or radial seal, it should be contacted and re-adjusted; if it is an empty preservation The fire is caused, and after the shipment is delivered to the same side, the air premium should be turned off immediately, the entrance to the wind is turned, and the empty preservation is rotated, and the fire extinguishing device will be put into the fire; if the motor is overcurrent protection, empty pre- When the operator is stopped, then the same side, the blower should interlock the trip, otherwise it should be manually stopped. If the unit coordinated control input, the RB protection should move, otherwise it should be put into the oil gun to help, reduce the load to 150MW, and Upper down the coal mill; if the current exceeds the rated value, and the current fluctuates no slow trend, emergency stop with the same side, the fan, close the empty preserved wind, and do everything possible to maintain empty premium Turn until its imported smoke temperature <200 ° C; if the empty pre-instrument is stopped and its main motor or the auxiliary motor is still running, it should be put into the oil gun to help, stop the coal mill, reduce the load to 150MW, stop On the same side, the wind turbines, close the side empty preserves, the entrance wind blowboard, and then stop the empty preserved operation of the motor, contact the maintenance process. 9, the oil supply pump lock start (any condition) # 1 oil supply pump interlock input, and # 2, # 3, the oil supply pump operation status is all disappeared, the joint # 1 oil pump # 1 oil supply pump interlock, After at least one running 60s in the oil supply pump, the oil supply is low (<2.8MPa) delay 2S, Lianzheng # 1 oil pump 10, oil angle logic exits the step? 1 Off Oil and Electromagnetic Expression Valve Initial 2 Confirm that the ignition gun is in place 3 open the steam solenoid valve and the ignition gun automatically fires 15 seconds after exiting 4 Purificing 30 seconds After the steam solenoid valve automatically shuts down 5 automatically exit oil When the gun 11, when the coal mill is running, what happens, the coal mill trip? 1 The coal mill is running, the two lubricant pumps are stopped, delayed 5S; 2 coal mills are running, two coal-free signals, delayed 30 minutes; 3 coal-proof machines, Correspondingly, both the lower two-layer burners do not detect flames, the same layer 4 take 3 delays 2S; 4 accident button is stationary; 5 coal mill lubricant station control disk power supply trip; 6 coal mill is high 60 ° C, delay 3S; 7 grinding machine motor with a bearing temperature of 90 ° C, delay 2S; 8 MFT action; 9 two-in-one fan is stopped; 10 has a coal machine, but the coal machine entranceOne wind pressure is low (4kPa), delay 15s. (Currently, it is enforced) 11 grinding machine operation, the driving end inlet is less than 40%, and the coal mill is not allowed. (Currently, it is enforced) two sealing winds are stopped; 13 on site spray oil system fault, delayed 30 minutes; 14 reducer lubricants below 0.05 MPa, delayed 3 minutes; 15 reducer lubricating oil At 80 ° C, delayed 2 minutes; 12 When a coal mill trip occurs, which items should be automated, otherwise it should be manually intervened: 1 correspond to two to the coal machine trip; 2 grinding machine export coal tube pneumatic shutter door 3 Waste machine inlet mixing damper automatically to 10% opening degree; 4 gear spray oil system stops; 5 coal coal machine once wind hot door; 6 coal coal machine once; 7 coal coal machine once Regulating the damper; 13, coal ignition allowance? 1) No MFT trip signal; 2) Fire inspection cooling air (6kPa); 3) Secondary wind / furnace differential pressure Normal (≥600Pa); 4) One wind mother tube Pressure is suitable (> 4 KPA）; 5）空气量大于30％; 6）操作至少一个密封风扇，密封风压合适（> 10kPa）; 7）至少一个风扇操作; 9）吹扫已完成; 10）有一个点火源; 14，煤圈机开始允许吗？ 1煤火允许将2个润滑油系统正常，低压润滑油泵出口油压正常; 3两个高压油泵正在运行和输出压力正常; 4主要缩减箱油泵运行和油制剂是正常的; 5幅度慢速传输和离合器点; 6牙科密封风扇操作; 7每个密封风电门都是开放的; 8煤入入入密密风风风;;;;;;;;风停止，到煤门密封风门; 10需要在侧面分离器出口门（4）上抛光; 11次阻尼器吹扫门完全关闭; 12煤机入口混合物已打开; 13煤轴承温度小于50°C; 14废液机电机轴承温度小于70°C; 15煤绕组温度小于110°C; 16出口温度超过55℃，小于80°C; 17主电机无电机故障;没有跳闸信号的18台无煤机。
- 2021-08-20 22:09:11
- 免注册用户
- 直喷式粉末系统的主动性是：（1）简单系统，设备较少，捷径，投资省。 （2）煤粉没有中间停留，气体粉的温度不太高，爆炸的危险较小。 （3）粉末粉末系统的研磨功耗低。直接吹粉体系统的主要缺点是：（1）煤磨机的运行随锅炉负荷而变化，因此不能在经济努力下运行。 （2）异常异常失效将直接影响锅炉工作。然而，对于大容量锅炉，锅炉配备多种煤磨机，并且发生了交替和维护的事故。这种缺点不是主要问题。 （3）直接给药粉末系统利用扭矩作为风，温度低，水蒸气，是对火不利的，因此挥发性低，水分不适合直接吹粉体系统。 （4）当锅炉负荷变化时，通过给煤机实现煤的调节，并且有一个大的滞后。
- 2021-08-20 22:07:24
- gyq
- 制粉系统运行中主要控制哪几个参数它们之间有怎样关系,制粉系统运行中主要控制磨煤机入口负压，磨煤机出入口差压及磨煤机出口气粉混合物的温度。它们三者随给煤量变化而变化，当给煤量增加时，磨煤机出入口差压增大，入口负压会变小，出口气粉混合物温度降低。此外，当关小排粉机入口档板时，磨煤机入口差压及出入口差压都变小。开大磨煤机入口热风门，则入口负压变小，出入口差压变大，出口气粉混合物温度升高。
- 2021-08-20 22:07:24
开通会员