To Ensure The Reliable Operation Of Tubular Heater Measures
To ensure the reliable operation of Tubular Heater measures
To ensure the reliable operation of the Tubular Heater measures are the following:
1 Optimize the design and installation of Tubular Heaters to prevent internal fouling
Electric heating pipe blown fault is the largest number of occurrences in all faults, mainly caused by excessive internal fouling. Due to the replacement of electric heating pipe duration is longer, when the occurrence of multiple electric heating pipe blown, the heater outlet temperature will not meet the system requirements, will affect the unit load and even downtime for a long time, to bring huge economic losses. Therefore, in the selection of Tubular Heater, the design and installation phase of the system should focus on the internal fouling problem. The Tubular Heater manufacturer should be asked to increase the distance between the electric heating pipe and the inner wall of the main body, and the standby electric heating is arranged in the lower part.
2 the Tubular Heater control cabinet to improve ventilation, to ensure that Zhou Bian environment temperature does not exceed 25 ℃
As the SCR power regulator thyristor work when the heat and has a SCR over-temperature interlock protection trip function, when the SCR operating temperature exceeds 70 ℃ when triggering its temperature control element action, interlock contactor trip. Equipment operation due to Tubular Heater control cabinet internal cooling problems and the working environment temperature problems caused by equipment outage failure occurs. Thus improving the Tubular Heater control cabinet ventilation, to ensure that the working temperature is very important. In the heater control cabinet before ordering, manufacturers should be required in the design of high-power cabinet cooling fan, to expand the air inlet area, cabinet size should be designed and reasonable enough to reserve the remaining space. Control cabinet where the power distribution room to install at least two air conditioners to ensure that the distribution room temperature maintained at 25 ℃ below.
3 to strengthen the Tubular Heater inspection, timely detection of equipment abnormalities and processing
The unit in the operation of the power generation operation personnel, equipment inspection staff and maintenance personnel should check the daily operation of the Tubular Heater and control cabinet, and do a good job with the relevant data before the same type of comparative analysis to ensure that the equipment found in advance Hidden and dealt with. (2) inspection, recording and analysis of the Tubular Heater out, the entrance of the wind pressure, the pressure should be in the direction of the valve should be in the correct position, (3) check the heater body ground wire is intact, whether the installation is connected firmly to avoid the occurrence of personal electric shock accident; (3) check the heater body grounding wire is intact, (4) Check the bottom of the SCR power regulator fan and cabinet cooling fan is running well, if the need to stop the need to immediately replace the new fan; (5) check the control cabinet where the power distribution room air conditioning is normal, (6) measuring the SCR operating temperature of the SCR power regulator, such as measuring the value close to 70 ℃ should take measures to improve the ventilation and heat to its temperature drop, if necessary, to stop the group (7) record the maximum running current of each group of Tubular Heaters, and compare with the previous data, such as running current Large drops larger value, the thermostat parameters can be adjusted to improve the heater power.
4 do a good job of regular maintenance and maintenance of Tubular Heaters
During the maintenance or quiescence of the unit, the Tubular Heater shall disconnect the main power switch and carry out the relevant test and disassembly inspection. After the unit is shut down, the Tubular Heater should be tested immediately to ensure that the problem is detected and sufficient time for processing. Test items comprising: each of three-phase DC resistance and insulation resistance of each phase and make a record. If the insulation resistance is found to be less than 1MΩ, the cable head should be disassembled and the insulation resistance of the cable and the heating tube should be measured separately to distinguish the cable problem or the heating tube problem. The discovery phase DC resistance unbalance, electric cables and pipes should also were measured to determine the specific location and quantity. At the same time do a good job of tube heater core inspection work, remove the heater inside the fouling, cleaning the electric tube to carry out cleaning, check the appearance and fastening of the heating tube, tighten the control cabinet to connect the wire, check, check the thermometer and Whether the thermostat action is normal. Before starting the unit, the insulation resistance of the heater should be measured again. If the insulation resistance of the individual group is low, it is prohibited to put the electric power into operation and prevent the electric tube or cable from being damaged. Should be passed into the media in advance, the inside of the heater dry and dry, when the insulation resistance can be put into operation after passing.