At present, the hot high-grade electric atmospheric pressure boiler is a kind of thermal energy equipment with high temperature and high pressure. It is widely used in various industries, such as electric power, machinery, chemical industry and civil heating, which require the boiler to supply a large amount of heat energy. However, users are careful to pay attention to some items in order to ensure the normal operation of the equipment. So, let me give you the following interpretation of the operation of the atmospheric pressure boiler points for attention? The details are as follows:
1, attention should be paid to adjusting the water supply mode of the equipment at present, because the boiler and the system are separated from the system when the operation of the electric atmospheric hot water boiler is stopped, the users should pay attention to the operation of the electric atmospheric pressure boiler and the heating system respectively. In addition, the user should first put the boiler water to the lowest water level of the boiler expansion tank and then carry on the system water. At the same time, the gas in the equipment should be discharged when the system is filled with water. 2. pay attention to the test equipment ignition device before the ignition of the normal pressure boiler, the user in addition to the boiler auxiliary equipment inspection, but also should pay special attention to the automatic opening and closing valve opened is sensitive and reliable, but also should pay special attention to the automatic opening and closing valve opening is sensitive and reliable And pay attention to observe the boiler water level change, if the equipment stop running, its water level rises rapidly, it indicates that the automatic opening and closing valve leakage of the equipment is serious, the user should carry on the maintenance in time or replace the parts of the electric normal pressure boiler.
2, pay attention to the temperature change when the equipment is running, if the water temperature is too high, it is easy to cause the vaporization at the inlet of the circulating pump, so as to affect the normal operation of the equipment pump. Therefore, when using the equipment, users should pay attention to controlling the effluent temperature of the electric atmospheric pressure boiler, and the effluent temperature of the equipment should be controlled below 90 ℃. In addition, if the user needs a longer period of time to stop the operation of the more discounted electric atmospheric pressure boiler, the user shall close the valve of the boiler inlet and outlet. So that the circulating water in the equipment system is prevented from pouring into the boiler and the system height emptying phenomenon is formed so as to affect the re-start of the electric atmospheric pressure boiler.
It is reported that in March 15, Chifeng City, a special inspection of the pressure to carry out an internal inspection of industrial gas and steam boiler upgrade skills than the ability to test cum activity. Chifeng City, the special prosecutor, deputy director Jiao Wenxiang, deputy chief engineer Wang Shusen, deputy chief engineer Zhang Yulin and a pressure test of all personnel to participate. The ratio of the activity is divided into document review, site inspection, inquiry exchange three links, the city of Chifeng hotel comparison site inspection in WNS4-1.25-Q type of boiler.
In the field, compared to persons in accordance with the "boiler periodic inspection rules," "Boiler Safety Technology Supervision" and other relevant standards, test preparation equipment industrial gas steam boiler inspection, the document review, site inspection programs, projects, methods, inspection found defect assessment and treatment, inspection records and test the views of notice to fill in field operations and other aspects of comparison. Then the referee group of inspectors to participate in the comprehensive assessment ratio, the final nine inspectors compared the results were satisfactory. The ratio of inspectors to participate have said, by building a mutual learning platform for the exchange ratio of activities to enhance their own inspection techniques, in order to better carry out the annual inspection lay a solid foundation.
After comparison, the assessment team for each ratio of staff present in the actual operation problems raised rectification, so that each person than to recognize their lack of inspection in the presence of, as well as their ability to enhance the tailored inspection Program. In the future, I will continue to strengthen and enhance the inspection capabilities, adhere to the bottom line of thinking and problem-oriented, to provide a solid technical support for the safety of special equipment to hold the bottom line.
The reason you must know the problems of energy consumption boiler (boiler exhaust gas temperature) produce exhaust gas temperature of the boiler problem (1) shift the center position on the furnace flame, the exhaust gas temperature rises a multi-burner into the upper interlayer with the wind unreasonable . b upper stoker coal excessive. c burner tilt position shifted, resulting in the shift of the center position of the flame. d burner auxiliary throttle opening degree command deviations, lack of oxygen, pulverized coal combustion delayed. e a high-pressure fan outlet, wind speed is too large, the pulverized coal combustion furnace into the shift position. f leakage boiler, the furnace excess air factor export. g coal is too thick, ignition and slow combustion reaction. h low volatile coal, high ash, high moisture, ignition difficulties, to delay the combustion. i mill outlet temperature is low, the air entering the furnace temperature was lowered powder mixture, combustion delay. (2) When the boiler "four leak" for plugging, resulting in a superheater, reheater or economizer to reduce heat transfer area. (3) the supply air temperature is high. (4) high flue gas dew point temperature. (5) soot blowing equipment investment is not normal. (6) heating surface coking, fouling. (7) The air preheater ash fouling, heat transfer efficiency is lowered. (8) strict quality control, internal heating surface junction. (9) low water temperature.
Horizontal good-looking air premixed fired hot water boiler a few precautions, overpressure accident 1 boiler, steam boiler overpressure phenomenon of (1) a sharp rise in steam pressure, the pressure exceeds the allowable working pressure gauge pointer over the "red line" is still working pressure safety valve l high. (2) the operation of the device is the interlock overpressure protection, should send overpressure alarm signal, stops the air blowing, the wind, coal. (3) steam temperature and steam flow rate reduction increases. 2, to treat boiler overpressure (1) weakened rapidly burning, manually open the valve or bleed valve. (2) increase the water supply, while the lower reinforcing blowdown drum (It should be noted at this time to maintain the normal water level of the boiler), in order to reduce the temperature of the boiler water, thereby reducing the pressure in the boiler drum. (3) as a safety valve malfunction or all of the pressure gauge damage, emergency shutdown, safety valves and pressure gauges are to be repaired after the boost operation. When endanger the safe operation of (4) Boiler excessive pressure, blood pressure should take measures, but too fast buck is strictly prohibited. (5) boiler overpressure eliminate serious, to the shutdown of the boiler internal and external inspection, to eliminate the overpressure caused by deformation, leakage and other safety accessories and maintenance unqualified. Second, an accident boiler water, boiler water shortage (1) below the minimum safe water level line, or can not see the water level, the water level gauge glass (plate) as a white. (2) as a full-color water level gauge vapor instruction color. Low water level alarm signal (3) water level alarm occurs. (4) low water interlocking means, the water level should be below a prescribed value blower, Fan, grate reduction motor stops running. (5) a sharp rise in the superheater steam temperature, higher than the outlet steam temperature. (6) boiler exhaust gas temperature rises. (7) the water flow is less than the steam flow, causing Should the water tube due to tube cracking or economizer, an opposite phenomenon occurs. (8) When a serious water shortage, can smell the burnt smell. (9) When a serious shortage, the door can be seen from the red-hot waterwall tubes. (10) a serious water shortage, the furnace tube may rupture, then can hear the explosions, smoke and steam from the door, watching spray the fire door. 2, boiler water treatment (1) through the "waters", sentenced to severe water shortages, emergency shutdown must be prohibited blind to the boiler feed water. (2) through the "waters" sentenced to a slight lack of water, it should reduce fuel blast, the wind, and slowly feed water. Third, full water boiler 1 accident phenomenon (1) above the maximum allowable water level line, or can not see the water level, the water level gauge glass (plate) dark color boiler filled with water. (2) all of the water phase as a color level gauge indication color. High-water alarm signal (3) water level alarm occurs. (4) decreased superheated steam temperature. (5) water flow is not normally greater than the steam flow. (6) water in a large number of sub-cylinder, severe trap operation. (7) with a large amount of water steam severe, increased salinity, water hammer occurs in the sound of the steam pipe, the steam connection flange outwardly dripping take place. 2, steam boiler full of water treatment rinse water table, determined to be minor or serious full of water full of water. Method: Close water table, the water pipe connected cock, then open drain cocks As can be seen from the decreased water level, indicating a slight full of water, the water supply is stopped, the drain valve open, put to the normal water level. Such as severe filled with water due to take emergency shutdown measures.
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