BTC bearing
Publish: 2021-05-29 17:27:02
1. 1. Process water interruption treatment
(1) fault phenomenon
1. Low process water pressure alarm signal is sent out
2
3. The liquid level of relevant slurry tank drops< 4. The vacuum belt dehydrator and vacuum pump trip
(2) cause analysis
1< 2. The outlet valve of process water pump is closed
3. The liquid level of the process water tank is too low, and the process water pump trips< 4. Process water pipe is broken< (3) treatment method
1. Confirm that the linkage of vacuum belt dehydrator and vacuum pump is normal
2. Stop the operation of gypsum discharge pump
3. Stop feeding immediately and stop the operation of filtrate pump
4. Find out the cause of process water interruption, report to the shift supervisor and branch station in time, and restore the water supply as soon as possible
5. According to the liquid level of flushing water tank and cake flushing water tank, stop the operation of corresponding pumps
6. During the treatment, the temperature and liquid level of the absorption tower and the liquid level of the limestone slurry tank shall be closely monitored, and the treatment shall be carried out according to the short-term shutdown regulations if necessary< (1) fault phenomenon
1; Desulfurization booster fan trip; Sound and light alarm
2. The red light of desulfurization booster fan is off, the yellow light is on, and the motor stops running
3. Desulfurization bypass baffle and absorber ventilation baffle open automatically, and inlet and outlet flue gas baffle close automatically
4. If the pulp feeding system is put into automatic mode, the chain will stop the pulp feeding< (2) cause analysis
1. Press the accident button< 2. The desulfurization booster fan loses power
3. The recycle pump of absorption tower was stopped completely
4. The pressure loss of desulfurization device is too large or the inlet and outlet flue gas baffles are not opened in place< 5. The bearing temperature of booster fan is too high
6. The temperature of motor bearing is too high
7. The temperature of motor coil is too high
8. Excessive vibration of fan bearing
9. Electrical fault (overload, overcurrent protection, differential protection action)
10. Surge of booster fan
11. The st content in hot flue gas is too large< The boiler load is too low
(3) treatment method
1. Confirm that the desulfurization bypass baffle and absorption tower ventilation baffle open automatically, and the inlet and outlet flue gas baffle close automatically. If the interlock is not good, it should be handled manually
2. Check the cause of booster fan trip. If it is caused by interlock action, it can be restarted after the system returns to normal
3. If it is caused by the fault of the fan equipment, it should be reported to the shift supervisor and the depot in time, and contact the maintenance personnel for treatment. It is forbidden to restart the fan before the fault is verified and handled< If the operation can not be resumed in a short period of time, it shall be handled according to the regulations of short-term shutdown; Recirculation pump trip; Sound and light alarm signal is sent out
2. The red light of the recirculation pump is off and the green light is on, and the motor stops running
3. Interlock and open the bypass baffle and smoke exhaust baffle, shut down the booster fan, and close the inlet and outlet flue gas baffle of two units< (2) cause analysis
1, 6kV power interruption< 2. The liquid level of absorption tower is too low< (3) treatment method
1. Confirm that the interlock action is normal. Confirm that the desulfurization bypass baffle and absorption tower ventilation baffle of the two units are opened automatically, and the booster fan trips; The inlet and outlet flue gas baffles of the two units are closed automatically. If the booster fan does not trip and the baffle does not work properly, it should be handled manually
2. Find out the cause of the recirculation pump trip and deal with it according to relevant regulations
3. Report to the shift supervisor and the depot in time, and inform the relevant maintenance personnel if necessary
4. If the operation cannot be resumed in a short time, it shall be handled according to the relevant provisions of short-term shutdown
5. Depending on the flue gas temperature in the absorption tower, turn on the flushing water of the demister to prevent the rubber lining of the absorption tower and the damage of the demister< (1) fault phenomenon
1. 6kV bus voltage disappears, sound and light alarm signal is sent out and CRT alarm is given
2. The running desulfurization equipment trips and the 6kV motor of the corresponding bus stops
3. The corresponding 380V bus of this section will lose power, and the corresponding 380V load will lose power and trip< (2) cause analysis
1, 6kV bus fault
2. The generator of the unit trips and the standby power fails to be put into operation
3. Fault standby power supply of desulfurization transformer failed to put into operation< (3) treatment method: 1. Confirm whether the interlock trip action of desulfurization is completed. If the damper action of each flue is not good, switch the automatic operation to manual operation immediately
2. Confirm that the power supply of USP section and DC system is normal, the working power switch and standby power switch are in the off position, and disconnect all load switches
3. Contact the shift supervisor and electrical maintenance personnel to find out the cause of the fault and restore the power supply
4. If the interlock of the feeding system does not work, the feeding should be stopped manually
5. Pay attention to monitor the temperature changes in the flue gas system, and manually open the flushing water valve of the demister when necessary
6. Close the regulating baffle of booster fan to the minimum position, and be ready to restart the desulfurization device
7. If the 6kV power supply can not be restored in a short time, the slurry in the pipeline and pump body shall be discharged as soon as possible according to the relevant regulations of shutdown to avoid deposition
8. If the 380V power supply is interrupted, it shall be handled according to the corresponding regulations< (1) fault phenomenon
1. 380V power interruption & quot; Acoustic alarm signal is sent out
2. When 380V voltage indicates zero, the low voltage motor trips
3< (2) cause analysis
1. Corresponding 6kV bus fault< 2. Desulfurization low pressure trip< 3. 380V bus fault< (3) treatment method
1. If it is caused by 6kV power failure, it is treated as short-term shutdown
2. In case of 380V single section fault, check the fault cause and equipment action, disconnect the power switch and load switch of the section, and report in time
3. When the 380V power supply is completely cut off and the power supply cannot be restored within 8 hours, the standby equipment should be used to drain the slurry from all pumps and pipes and wash them in time
4. Power supply caused by electrical protection action shall not be blindly forced to send power.
(1) fault phenomenon
1. Low process water pressure alarm signal is sent out
2
3. The liquid level of relevant slurry tank drops< 4. The vacuum belt dehydrator and vacuum pump trip
(2) cause analysis
1< 2. The outlet valve of process water pump is closed
3. The liquid level of the process water tank is too low, and the process water pump trips< 4. Process water pipe is broken< (3) treatment method
1. Confirm that the linkage of vacuum belt dehydrator and vacuum pump is normal
2. Stop the operation of gypsum discharge pump
3. Stop feeding immediately and stop the operation of filtrate pump
4. Find out the cause of process water interruption, report to the shift supervisor and branch station in time, and restore the water supply as soon as possible
5. According to the liquid level of flushing water tank and cake flushing water tank, stop the operation of corresponding pumps
6. During the treatment, the temperature and liquid level of the absorption tower and the liquid level of the limestone slurry tank shall be closely monitored, and the treatment shall be carried out according to the short-term shutdown regulations if necessary< (1) fault phenomenon
1; Desulfurization booster fan trip; Sound and light alarm
2. The red light of desulfurization booster fan is off, the yellow light is on, and the motor stops running
3. Desulfurization bypass baffle and absorber ventilation baffle open automatically, and inlet and outlet flue gas baffle close automatically
4. If the pulp feeding system is put into automatic mode, the chain will stop the pulp feeding< (2) cause analysis
1. Press the accident button< 2. The desulfurization booster fan loses power
3. The recycle pump of absorption tower was stopped completely
4. The pressure loss of desulfurization device is too large or the inlet and outlet flue gas baffles are not opened in place< 5. The bearing temperature of booster fan is too high
6. The temperature of motor bearing is too high
7. The temperature of motor coil is too high
8. Excessive vibration of fan bearing
9. Electrical fault (overload, overcurrent protection, differential protection action)
10. Surge of booster fan
11. The st content in hot flue gas is too large< The boiler load is too low
(3) treatment method
1. Confirm that the desulfurization bypass baffle and absorption tower ventilation baffle open automatically, and the inlet and outlet flue gas baffle close automatically. If the interlock is not good, it should be handled manually
2. Check the cause of booster fan trip. If it is caused by interlock action, it can be restarted after the system returns to normal
3. If it is caused by the fault of the fan equipment, it should be reported to the shift supervisor and the depot in time, and contact the maintenance personnel for treatment. It is forbidden to restart the fan before the fault is verified and handled< If the operation can not be resumed in a short period of time, it shall be handled according to the regulations of short-term shutdown; Recirculation pump trip; Sound and light alarm signal is sent out
2. The red light of the recirculation pump is off and the green light is on, and the motor stops running
3. Interlock and open the bypass baffle and smoke exhaust baffle, shut down the booster fan, and close the inlet and outlet flue gas baffle of two units< (2) cause analysis
1, 6kV power interruption< 2. The liquid level of absorption tower is too low< (3) treatment method
1. Confirm that the interlock action is normal. Confirm that the desulfurization bypass baffle and absorption tower ventilation baffle of the two units are opened automatically, and the booster fan trips; The inlet and outlet flue gas baffles of the two units are closed automatically. If the booster fan does not trip and the baffle does not work properly, it should be handled manually
2. Find out the cause of the recirculation pump trip and deal with it according to relevant regulations
3. Report to the shift supervisor and the depot in time, and inform the relevant maintenance personnel if necessary
4. If the operation cannot be resumed in a short time, it shall be handled according to the relevant provisions of short-term shutdown
5. Depending on the flue gas temperature in the absorption tower, turn on the flushing water of the demister to prevent the rubber lining of the absorption tower and the damage of the demister< (1) fault phenomenon
1. 6kV bus voltage disappears, sound and light alarm signal is sent out and CRT alarm is given
2. The running desulfurization equipment trips and the 6kV motor of the corresponding bus stops
3. The corresponding 380V bus of this section will lose power, and the corresponding 380V load will lose power and trip< (2) cause analysis
1, 6kV bus fault
2. The generator of the unit trips and the standby power fails to be put into operation
3. Fault standby power supply of desulfurization transformer failed to put into operation< (3) treatment method: 1. Confirm whether the interlock trip action of desulfurization is completed. If the damper action of each flue is not good, switch the automatic operation to manual operation immediately
2. Confirm that the power supply of USP section and DC system is normal, the working power switch and standby power switch are in the off position, and disconnect all load switches
3. Contact the shift supervisor and electrical maintenance personnel to find out the cause of the fault and restore the power supply
4. If the interlock of the feeding system does not work, the feeding should be stopped manually
5. Pay attention to monitor the temperature changes in the flue gas system, and manually open the flushing water valve of the demister when necessary
6. Close the regulating baffle of booster fan to the minimum position, and be ready to restart the desulfurization device
7. If the 6kV power supply can not be restored in a short time, the slurry in the pipeline and pump body shall be discharged as soon as possible according to the relevant regulations of shutdown to avoid deposition
8. If the 380V power supply is interrupted, it shall be handled according to the corresponding regulations< (1) fault phenomenon
1. 380V power interruption & quot; Acoustic alarm signal is sent out
2. When 380V voltage indicates zero, the low voltage motor trips
3< (2) cause analysis
1. Corresponding 6kV bus fault< 2. Desulfurization low pressure trip< 3. 380V bus fault< (3) treatment method
1. If it is caused by 6kV power failure, it is treated as short-term shutdown
2. In case of 380V single section fault, check the fault cause and equipment action, disconnect the power switch and load switch of the section, and report in time
3. When the 380V power supply is completely cut off and the power supply cannot be restored within 8 hours, the standby equipment should be used to drain the slurry from all pumps and pipes and wash them in time
4. Power supply caused by electrical protection action shall not be blindly forced to send power.
2. 1. Implicated rotation of cylinder
the implicated rotation of cylinder and piston e to the action of bearing is fixed or stopped by three 45 degree grooves or Z-M threads. But to stop properly, not because of the external interference force to make the cylinder deviation, oblique and abnormal work
2. Pay attention when installing the clutch on the shaft
when installing the clutch on the shaft, use special tools to pressurize the hollow shaft tube as far as possible, and do not impact the cylinder or other vulnerable parts
3. Installation of shaft end of pulley and gear
the radial force center of pulley or gear shall be aligned with the bearing center of two groups of bearings inside the flange as far as possible. Excessive offset will affect the service life of the proct
4. Bearing related
generally, the sealed bearing is maintenance free, and a few parts need to be properly supplemented with grease according to the relationship between the use environment, usually 1 to 6 months
5. Avoid overload operation
the safety factor of 1.5 to 2 times of the torque should be adopted as far as possible in proct selection, which will cause damage to the tooth surface or rece the service life
the above are matters needing attention. If you are helpful, please adopt them. Thank you
the implicated rotation of cylinder and piston e to the action of bearing is fixed or stopped by three 45 degree grooves or Z-M threads. But to stop properly, not because of the external interference force to make the cylinder deviation, oblique and abnormal work
2. Pay attention when installing the clutch on the shaft
when installing the clutch on the shaft, use special tools to pressurize the hollow shaft tube as far as possible, and do not impact the cylinder or other vulnerable parts
3. Installation of shaft end of pulley and gear
the radial force center of pulley or gear shall be aligned with the bearing center of two groups of bearings inside the flange as far as possible. Excessive offset will affect the service life of the proct
4. Bearing related
generally, the sealed bearing is maintenance free, and a few parts need to be properly supplemented with grease according to the relationship between the use environment, usually 1 to 6 months
5. Avoid overload operation
the safety factor of 1.5 to 2 times of the torque should be adopted as far as possible in proct selection, which will cause damage to the tooth surface or rece the service life
the above are matters needing attention. If you are helpful, please adopt them. Thank you
3. Configuration type: home learning type
accessory category proct name price
CPU Intel Celeron D315 2.26g (bulk) 270.00
motherboard elite 945pl-a 688.00
memory Kingston 256MB DDRII 533 200.00
hard disk Seagate coldfish 7200.7 80g 7200 to 8m (serial port) 415.00
CD-ROM Samsung golden general 16x DVD recorder (black gold version) ts-h552d 359.00
video card Seven rainbow radium wind 9550 ch gold 440.00
speaker rambler r103t 110.00
keyboard and mouse set colorful k7008p + m308bp office master enhanced version 75.00
LCD B71 1499.00
total: 4056
because you said that you have plans to upgrade in the future, specially selected a 945 motherboard for you, after this motherboard you can upgrade absolutely, because Your requirements are not high, so I chose a CPU with enough memory for you.
the memory is only 256M. If you don't play games, it's enough. A hard disk is in place. If you choose 8m serial port, you don't need to move after upgrading. The chassis doesn't choose DVD recorder. The display is LCD, but I suggest that the memory should be changed to 512M.
that's all
accessory category proct name price
CPU Intel Celeron D315 2.26g (bulk) 270.00
motherboard elite 945pl-a 688.00
memory Kingston 256MB DDRII 533 200.00
hard disk Seagate coldfish 7200.7 80g 7200 to 8m (serial port) 415.00
CD-ROM Samsung golden general 16x DVD recorder (black gold version) ts-h552d 359.00
video card Seven rainbow radium wind 9550 ch gold 440.00
speaker rambler r103t 110.00
keyboard and mouse set colorful k7008p + m308bp office master enhanced version 75.00
LCD B71 1499.00
total: 4056
because you said that you have plans to upgrade in the future, specially selected a 945 motherboard for you, after this motherboard you can upgrade absolutely, because Your requirements are not high, so I chose a CPU with enough memory for you.
the memory is only 256M. If you don't play games, it's enough. A hard disk is in place. If you choose 8m serial port, you don't need to move after upgrading. The chassis doesn't choose DVD recorder. The display is LCD, but I suggest that the memory should be changed to 512M.
that's all
4.
Address: near No.18 Wenzhuang Road, Fucheng town
5. Drink is the token of drinkchain
uses: 1. You can buy drinks directly or cash in the stock exchange
2. Incentive assets and handling charges used in drink ecosystem
③ it is used as a community reward for drink
drink will never issue additional shares. With the continuous development of drink and ecology, its value will be higher and higher.
uses: 1. You can buy drinks directly or cash in the stock exchange
2. Incentive assets and handling charges used in drink ecosystem
③ it is used as a community reward for drink
drink will never issue additional shares. With the continuous development of drink and ecology, its value will be higher and higher.
6. In the new administrative district of Shushan District, Hefei city
the address is No. 100, Dongliu Road, but it's quite new
a better way to find it is: there is a Tesco at the intersection of Qianshan Road and Wangjiang Road, and Tesco will see the building after passing a big road. There is an underpass tunnel near Qianshan Road in the south 2nd Ring Road, where you can see the building
take bus No.166, 129, 18 to the municipal government office area.
the address is No. 100, Dongliu Road, but it's quite new
a better way to find it is: there is a Tesco at the intersection of Qianshan Road and Wangjiang Road, and Tesco will see the building after passing a big road. There is an underpass tunnel near Qianshan Road in the south 2nd Ring Road, where you can see the building
take bus No.166, 129, 18 to the municipal government office area.
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