Wheel dehumidifier has obvious applications in many industrial production, especially in the metal smelting industry, in this regard, Tilling wheel dehumidifier Edge Xiao from the wheel dehumidifier to deal with the cause of failure, and pointed out the corresponding improvement methods for safe operation, for the future purchase, use and maintenance of effect equipment provides a theoretical basis.

The centrifuge is mainly composed of a rotor and a stator, including a rotor impeller and a shaft, the impeller has a blade, in addition to the balance disc and a part of the shaft seal, the main body of the centrifuge is the shell (cylinder), and the stator has a diffuser, a bend, a reflux device, an outlet pipe, an exhaust pipe and a part of the shaft seal.

When the impeller rotates at a high speed, the gas rotates accordingly, and under the action of centrifugal force, the gas is thrown into the rear diffuser, forming a vacuum area at the impeller. At this time, fresh air enters the impeller, the impeller keeps rotating, the gas keeps sucking out and throwing out, so as to maintain the continuous flow of gas.

The rotary dehumidifier increases the pressure of the gas through the change of kinetic energy, when the rotor with a blade rotates, the blade drives the gas to rotate and do work to the gas, so as to obtain kinetic energy, after entering the stator part, due to the expansion of the stator, the speed can be converted into the required pressure, the speed decreases, the pressure increases.

At the same time under the guidance of the stator part into the lower impeller to continue pressurizing, and finally discharged from the volute. For each rotary dehumidifier, in order to meet the pressure required by the design, each rotary dehumidifier is set up with an infinite number of stages and segments.

Fault performance: After the runner dehumidification locomotive trips, watch the alarm record on the spot, showing "the final stage temperature is too high". After the reset, check that nothing is abnormal and start running.

Analysis and processing: According to the trend of the running parameters of the runner dehumidifier, the current before tripping drops to 55 amps, the first and second stage impeller vibrates, the IGV and the vent valve work together, and the exhaust steam pressure curve fluctuates. At the same time, check the trend of 10KV voltage.

The voltage in this period decreased from 10.22KV to 9.46KV, and the grid voltage was in a low voltage state during this period. It can be judged that when the current drops to 55 amps, it has entered the surge protection zone of the rotary dehumidifier. During this period, the surge phenomenon of the wheel dehumidifier occurred, resulting in the unit protection tripping.

Fault: wheel dehumidifier start-up trip, go to the scene to see the trip record, showing the final stage inlet temperature high alarm, surge alarm. Field inspection of the intake filter and exhaust showed no abnormality. Then, two start-up test runs were carried out, and the surge occurred about 5-10s after the start, and then the alarm was stopped. (About 5s after starting, the display system pressure quickly rises to 4bar, and the opening of the inlet guide vane is 0 points).

Troubleshooting: The inlet guide vane and vent valve of the runner dehumidifier were disassembled and checked and the operation test was carried out. The inlet guide vane blades were not stuck and the operation was normal; Check the action of the exhaust valve plate without falling off or sticking; Check the outer filter plate of the air intake filter with more dust, and the filter plate is relatively clean; The intake filter element was replaced, and the air muffler was inspected on the spot, and abnormal conditions such as spray traces were found in the lower part; Before starting, manually turn the car before starting, and then test. The machine is up and running normally.

Comprehensive analysis and prevention: the shutdown failure factors of surge are mainly dirty intake filter element; Condensation buildup at the exhaust muffler leads to exhaust blockage (on the other hand, consider poor drainage of the interstage cooler or leakage of the cooler itself).

Wheel dehumidifier has obvious applications in many industrial production, especially in the metal smelting industry, in this regard, Tilling wheel dehumidifier Edge Xiao from the wheel dehumidifier to deal with the cause of failure, and pointed out the corresponding improvement methods for safe operation, for the future purchase, use and maintenance of effect equipment provides a theoretical basis.

The centrifuge is mainly composed of a rotor and a stator, including a rotor impeller and a shaft, the impeller has a blade, in addition to the balance disc and a part of the shaft seal, the main body of the centrifuge is the shell (cylinder), and the stator has a diffuser, a bend, a reflux device, an outlet pipe, an exhaust pipe and a part of the shaft seal.

When the impeller rotates at a high speed, the gas rotates accordingly, and under the action of centrifugal force, the gas is thrown into the rear diffuser, forming a vacuum area at the impeller. At this time, fresh air enters the impeller, the impeller keeps rotating, the gas keeps sucking out and throwing out, so as to maintain the continuous flow of gas.

The rotary dehumidifier increases the pressure of the gas through the change of kinetic energy, when the rotor with a blade rotates, the blade drives the gas to rotate and do work to the gas, so as to obtain kinetic energy, after entering the stator part, due to the expansion of the stator, the speed can be converted into the required pressure, the speed decreases, the pressure increases.

At the same time under the guidance of the stator part into the lower impeller to continue pressurizing, and finally discharged from the volute. For each rotary dehumidifier, in order to meet the pressure required by the design, each rotary dehumidifier is set up with an infinite number of stages and segments.

Fault performance: After the runner dehumidification locomotive trips, watch the alarm record on the spot, showing "the final stage temperature is too high". After the reset, check that nothing is abnormal and start running.

Analysis and processing: According to the trend of the running parameters of the runner dehumidifier, the current before tripping drops to 55 amps, the first and second stage impeller vibrates, the IGV and the vent valve work together, and the exhaust steam pressure curve fluctuates. At the same time, check the trend of 10KV voltage.

The voltage in this period decreased from 10.22KV to 9.46KV, and the grid voltage was in a low voltage state during this period. It can be judged that when the current drops to 55 amps, it has entered the surge protection zone of the rotary dehumidifier. During this period, the surge phenomenon of the wheel dehumidifier occurred, resulting in the unit protection tripping.

Fault: wheel dehumidifier start-up trip, go to the scene to see the trip record, showing the final stage inlet temperature high alarm, surge alarm. Field inspection of the intake filter and exhaust showed no abnormality. Then, two start-up test runs were carried out, and the surge occurred about 5-10s after the start, and then the alarm was stopped. (About 5s after starting, the display system pressure quickly rises to 4bar, and the opening of the inlet guide vane is 0 points).

Troubleshooting: The inlet guide vane and vent valve of the runner dehumidifier were disassembled and checked and the operation test was carried out. The inlet guide vane blades were not stuck and the operation was normal; Check the action of the exhaust valve plate without falling off or sticking; Check the outer filter plate of the air intake filter with more dust, and the filter plate is relatively clean; The intake filter element was replaced, and the air muffler was inspected on the spot, and abnormal conditions such as spray traces were found in the lower part; Before starting, manually turn the car before starting, and then test. The machine is up and running normally.

Comprehensive analysis and prevention: the shutdown failure factors of surge are mainly dirty intake filter element; Condensation buildup at the exhaust muffler leads to exhaust blockage (on the other hand, consider poor drainage of the interstage cooler or leakage of the cooler itself).