BTC axial flow fan

2. 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.

3. ABB Inverter, Ta TB TC
is the output point of inverter relay, if you want to use it to control the cooling fan
the relay output type can be set to run, that is, when the frequency converter starts to run, the contact is closed to start the corresponding fan, and when the frequency converter stops, the electric shock is broken to stop the fan.

4. 1. The connection between teeth is small in volume, but the torque transmitted is several times of other equal volumes
2. There is no slip and torque loss in 1:1 constant value transmission
3. The connection or separation is instantaneous and quick
4. The integrated structure is easy to install without worrying about the tooth contact axis
5. It needs to be connected at low speed, but it can run at high speed
6. It can be used either dry or wet.

5. BTC (buttress thread coupling) trapezoidal thread coupling is an API standard thread connection type, which is commonly used in the connection of petrochemical pipes or tools, such as floating collar, guide shoe and pipe shoe used in cementing operation. The pitch is 8 teeth per inch and the tooth height is 1-1.2 mm. The external thread part 1 is designed with - 15 ° The end face shoulder 4 is connected with - 15 of internal thread part 2 after tightening ° Internal torque shoulder interference fit, after the internal and external threaded parts are tightened, at least one circle of threads closely fit, the top surface of thread teeth of threaded parts is parallel to the oil pipe axis, and the inner diameter D2 of internal thread 2 is approximately the same as that of external thread 1. Trapezoidal thread has excellent sealing performance, high connection strength and good anti torque make-up ability, so it can be used as an alternative to thickened thread or replace thickened thread in practical engineering

6.

The longest distance from the canvas to the air outlet of the central air conditioner can be half a meter. Canvas only plays the role of soft connection, the insulation effect is poor, can not be considered as an air ct. So the shorter the better

flexible connection is required for all equipment that has vibration ring operation and needs to be connected with pipes (whether water pipes or air pipes), so as to avoid vibration being transmitted to the user side through pipes. Flexible materials must meet the material requirements of the specification

for example, pressure, fire resistance, moisture resistance, etc., the processing length also needs to meet the requirements of design and acceptance specifications, the specifications must be consistent with the specifications of connecting pipes, the section size shall not be changed, and the installation shall be smooth and straight with a certain margin. The flexible material is canvas, which is only suitable for places without fire and moisture requirements

< H2 > extended data:

application characteristics of air conditioning canvas:

1. Due to the pipeline connection, system error is inevitable, which can better eliminate the installation error

It has the function of sound absorption and vibration isolation, which can effectively rece the noise and vibration of the fan system

3. Temperature range: low temperature - 70 ℃ to high temperature 230 ℃

It has excellent fire resistance and long service life

Good flexibility, flexibility and flexibility

application scope of air conditioning canvas:

7. Connection of air circulation fans in shopping malls, supermarkets, hotels and office buildings

8. Dust removal system of clinker machine in cement plant, st discharge place

Dust and fiber in chemical instry, as well as highly active media, such as the junction of steam and flue gas

7.

Main maintenance categories: control system (uncontrolled temperature and humidity, sensor replacement and door lock replacement)
refrigeration system: filling various kinds of refrigerant (R404A, R502, f13, R23, R134a, r508b, isc89)
heating system: (maintenance of heater, replacement of solid state relay, contactor, time relay, intermediate relay Replace the humidifier)
Mechanical System: (replace the motor, fan, transform the box, re foaming, add wire holes)
humidity system: (repair the filter, temperature and humidity sensor, clean the water circuit, replace the wet cloth, etc.)
in order to avoid the impact test e to machine failure, our company launched the machine quarterly maintenance, so that your machine is in the best condition
meet the standard: GB / t2423.1.2 gb10592-89 GJB150
model: hyts-50a
inner box size: 400 x 350 x360mm (WHD)
temperature range of test tank: - 40 ℃ ~ + 150 ℃
temperature setting range of high temperature tank + 60 ℃ ~ + 200 ℃
heating rate of high temperature tank: about 5 ℃ / min on average
cooling rate of low temperature tank: about 1.5 ℃ / min on average
temperature fluctuation: ± 5 ℃
temperature deviation: ± 2.0 ℃
temperature recovery time: ≤ 5 minutes
high and low temperature exposure time: more than 30 minutes
inner box material: mirror stainless steel plate (Sus # 304 1.0 mm thick)
outer box material: stainless steel plate (Sus # 304 1.0 mm thick)
loading capacity of sample shelf: 30kg
sample weight: ≤ 8kg
box structure
the box is processed by CNC machine tool, with beautiful appearance, And the handle without reaction is adopted, which is easy to operate
the inside of the box is made of imported high-grade stainless steel (SUS304) mirror panel, and the outside of the box is made of A3 steel plate sprayed with plastic, which increases the appearance texture and cleanliness
the make-up water tank is located at the lower right part of the control box, and has automatic water shortage protection, which is more convenient for the operator to replenish water
the large observation window is equipped with lighting to keep the box bright, and the embedded tempered glass in the heating body is used to observe the condition of the box clearly at any time
the pipeline of humidification system is separated from the control circuit board, which can avoid the failure e to water leakage of humidification pipeline and improve the safety
the pipeline circuit system of waterway system is opened by door, which is convenient for maintenance and repair
a double-layer high temperature resistant high tension sealing strip is used between the door and the box to ensure the tightness of the test area
the left side of the box is equipped with a test hole with a diameter of 30mm or 50mm or 100mm, which can be used for external test power line or signal line The hole diameter or the number of holes should be increased when ordering)
the bottom of the machine is made of high-quality Pu movable wheels
1 high and low temperature impact test chamber 1. Volume, size and weight 1. Nominal inner volume 100L 1. 2. Inner chamber size w650mm × H460mm × D370mm 2. Performance index 2.1. Test environmental conditions: ambient temperature + 25 ℃, relative humidity ≤ 85% Test method GB / T 5170.2-1996 temperature test equipment 2.3 high temperature chamber 2.3.1 preheating temperature range + 60 ℃～ + 200 ℃ 2.3.2 heating time + 60 ℃→ + 200 ℃≤ 20min Temperature range - 78 ℃～ 0 ℃ 2.4.2. Cooling time + 20 ℃～ - 70 ℃≤ 80 min note: cooling time is the performance of the low temperature chamber when it operates alone 2.5. Laboratory (sample area) 2.5.1. Test mode pneumatic damper switching 2 temperature zone or 3 temperature zone 2.5.2. Temperature impact range (+ 60 ～ + 125) ℃ / (- 40 ～ - 10) ℃ 2.5.3. Temperature fluctuation ± 0.5 ℃ 2.5.4. Temperature deviation ± 2.0 ℃ 2.5.5. Temperature recovery time
recovery condition ≤ 5min
sample: plastic encapsulated integrated circuit (uniformly distributed) sensor position: upwind side of sample table 1 recovery condition high temperature exposure + 125 ℃: 30min
ambient temperature exposure: --
low temperature exposure: - 40 ℃: 30min
sample weight: 7.5kg 2.6. Meet the test standard GB / T 2423.1-2001 test a: low temperature exposure Temperature test method
GB / T 2423.2-2001 test B: high temperature test method
GB / t2423.22-2002 test n: temperature change test method test Na
GJB 150.3-1986 high temperature test
GJB 150.4-1986 low temperature test
GJB 150.5-1986 temperature impact test
(load see 4.5.5, no active thermal load) 3. Structural features 3.1. Air conditioning channel fan, heater Evaporator, damper, temperature sensor 3.2. Standard configuration of test box: 1 lead hole, located on the left side of the box, large and small φ 25mm × 100 mm long round hole type
sample shelf: 4 sample baskets, bearing capacity (uniform distribution) 2 sample baskets, each bearing capacity (uniform distribution): 5 kg 3.3. Adjusting feet and adjusting wheels adjusting feet: 4, supporting test chamber with
adjusting wheels: 6, moving test chamber with 3.4, Right handle (see "5.12. Appearance diagram of test chamber") 3.5. Circulating fan
high temperature / ambient temperature exposure
low temperature exposure
high temperature preheating mixing 3 φ， 400W, centrifugal
3 φ， 400W, centrifugal
1 φ， 50W, axial flow 3.6. Control panel controller display screen, fault indicator, timer, USB interface, overtemperature protection setter, main power switch, RS-485 communication interface, sample power control terminal, external alarm output terminal 3.7. Mechanical room refrigeration unit, water connection and drainage device, exhaust fan 3.8. Main power leakage circuit breaker, controller, power distribution board Cooling fan, high and low temperature circulating fan motor 3.9. Heater nickel chromium alloy electric wire heater
heater control mode: non contact equal cycle pulse width molation, SSR (solid state relay) 3.10. Power line hole and drain hole are located on the back of the box 4. Electrical control system display 10.4 inch 640x480 dot matrix, TFT color LCD display operation mode, program mode, setting mode, Chinese menu, touch screen mode, input program capacity 20 programs. Each program has a maximum of 3 steps; Each program can set 2000 cycles setting range, the upper limit of preheating temperature of high temperature chamber is + 220 ℃
the lower limit of precooling temperature of low temperature chamber is: - 80 ℃
test chamber (sample area): upper limit of temperature impact is + 10 ℃; Temperature impact lower limit - 10 ℃, display resolution temperature: 1 ℃
time: 0.1min, input thermocouple communication function
(optional) RS-485 interface, with local and remote communication function (ras-2003 monitoring software, RS-485 / RS-232 converter, one COM port and one USB port of PC are required); Up to 16 devices can be connected at the same time, the maximum cumulative cable length is 800m, the control mode is anti integral saturation PID, the fuzzy algorithm
BTC balance temperature control mode has curve recording function, and the ram with battery protection can save the set value, sampling value and sampling time of the device; The maximum recording time is 60 days (when the sampling period is 1.5min), a USB function USB disk (capacity not less than 256M) and a PC special software CD. The test curve data stored in the controller can be transferred to the USB flash disk. The test data / curve can be displayed and printed directly through the special software of PC (the printed data is marked with non modifiable mark); Or convert the recorded data to an access data file that can be read by Microsoft office. The test curve data recorded by the controller are: 3-way temperature setting temperature, upwind temperature and downwind temperature auxiliary function fault alarm and cause, processing prompt function, fault record, overtemperature protection, upper and lower limit temperature protection, power-off protection, sensor upwind and downwind selection, test pause, alarm output, time signal output, test end output, temperature arrival output, temperature detection output Timing start and automatic stop function, self diagnosis function software use environment
(provided by the user) IBM PC compatible machine, CPU above P Ⅱ, memory above 128M, Simplified Chinese Windows2000 or simplified Chinese WindowsXP operating system 5. Safety protection device 5. 1. Compressor overpressure of refrigeration system
compressor overheating
compressor over flow
circulating cooling water supply under pressure 5. 2. Laboratory temperature too high, too low protection (built-in controller)
laboratory temperature too high, too low protection (built-in controller) 5 Low protection
laboratory door opening protection 5.3. Other main power supply phase sequence and open phase protection relays
leakage circuit breaker, sample power supply control terminal, external alarm output terminal
high / low temperature chamber over temperature protection switch, high / low temperature chamber over temperature protection (built-in controller)
thermal relay of circulating fan, motor temperature switch
compressed air pressure switch, high / low temperature chamber over temperature protection switch, high / low temperature chamber over temperature protection (built-in controller)
thermal relay of circulating fan, motor temperature switch Exhaust valve 6. The third-party verification equipment shall be verified by the national environmental testing equipment quality testing center before leaving the factory, and an inspection report with a validity period of two years shall be issued