boiler inspector exam question papers

After the system control principle of vertical gas-fired steam boiler inspector exam question papers is turned on the power switch, click the pump control switch to turn on the position, carry on the boiler feed water to rise to the normal position, click the burner power switch, click the start button. The power supply of the control system is turned on and the burner enters the working state. According to the operation procedure of the program controller, the low-fire combustion is carried out first and then into the fire-burning state, and the boiler enters the normal operation stage. When the water level rises to the high water level, the output high water level alarm signal light is lit, accompanied by the sound of the electric bell, and the protection shutdown is realized to cut off the power supply of the controller. When the water level rises to + 30mm, the pump stops running, and when the water level drops to-30mmm, the pump automatically restarts, When the water level drops to ±50mm, the output is extremely high, the warning signal light is lit at the very low water level, accompanied by the sound of the electric bell, and the power supply of the controller is cut off by protecting the shutdown of the furnace. When the pressure rises to 0.72MPa, the overpressure signal, the sound of the electric bell, alarm and cut off the power supply of the control system to realize the emergency shutdown of the furnace. When the pressure exceeds the upper limit of the regulating pressure, the controller outputs a small fire signal to close the fire valve and open the small fire valve to burn in a small fire. When the pressure falls below the lower limit of the regulating pressure, the controller outputs a fire signal to open the fire valve to burn the fire. When the burner failure occurs, the combustion controller automatically closes the valve to stop combustion. When the exhaust temperature is higher than 250 ℃, there is a blue light, accompanied by the sound of the electric bell, and the protection shut down the power supply of the controller.

Shandong Mining Group in the six months after the boiler inspector exam question papers use, users submit a report to our company, our company started in 2017 using WDR0.5-0.8-Ⅱ electric fast Boiler Co., Ltd. of heating steam boiler. Large output, stable and reliable, high degree of automation, simple operation, do especially in terms of security is in place. After-sales service is very timely response to our technical consulting reply quickly and accurately. Whether it is party party products or fast fast service. My company is very satisfied. --customer feedback

2, different heat loss

In order to maintain sufficient coal-fired boilers burning efforts require the use of human or other device to stop adding coal-fired furnace, when the need intermittent operation, it takes a long time to start again to increase the furnace temperature, pressure fire will produce great heat loss, and very easy to start and stop the gas boiler can quickly heat up the intermittent operation, thereby reducing heat loss in this process.

Select the textile mill steam boiler inspector exam question paperss need pay attention to what our country is not only a large agricultural country, but also a major industrial country, the use of steam boilers more and more enterprises. Steam boilers for the chemical industry, pharmaceutical companies, chemical plants, cement plants, steel mills and other thermal energy, these companies plant an important and indispensable component. Even some plants need to arrange inspection departments of routine testing boiler water ph value meets the needs of process water. Visible status steam boiler in the enterprise is still very important. 1, first of all good safety performance, good safety performance steam boiler is worthy of our choice. When we discuss what a good quality steam boiler? Generally assess its safety performance. Steam boiler explosion message appears often on television and in newspapers, national authorities will also be listed as accidents. As can be seen, in the first place it should be safe factory production, so need to choose from a manufacturer steam boiler trusted to ensure safety. 2, energy saving and environmental protection in recent years, in order for residents to return to the blue sky, the State Environmental Protection Agency inspection of the factory air pollution is particularly strict, while the country has been promoting energy conservation in heavy industry. Specializing in the production can also be optimized to improve the steam boiler section, making it meet the national standard industrial energy efficiency and environmental protection. 3, after-sale protection, then, we should choose those aftermarket manufacturer warranty. If the steam boiler failure, hot water or steam supply system will be cut, the plant will not be able to continue production. If a glitch occurs, the plant can repair overhaul, major fault will need to notify the manufacturer's service sector, and therefore the need for timely and responsible for after-sales service.

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