The operation and maintenance of thermal power plant mainly includes centralized control operation, electrical operation, boiler operation and other posts. The main work every day is:

I. The main work contents of centralized control operation are as follows:

1, in strict accordance with the power plant operation procedures, to ensure safe operation;

2. Inspect the system on time, and fill in inspection records, operation records and handover records.

3, regularly check the power generation operation equipment, etc. ;

4, complete other work assigned by the leadership.

Second, the main contents of electrical operation are as follows:

1. Cooperate with the chief electrical attendant and monitor to complete the electrical operation and maintenance, and cooperate with the chief electrical attendant and monitor to maintain the safe, stable and economical operation of the electrical system;

2. Complete the operation and maintenance of electrical specialty;

3, responsible for the preparation of electrical switching operation ticket;

4. Obey the orders of the main electrical attendant and monitor;

5. Complete all kinds of switching operations, synchronization, generator-transformer group disconnection and other operations of the electrical system;

6, when the unit is abnormal and failure, assist the chief electrical attendant and monitor to complete the relevant operations;

7, regularly responsible for the inspection of electrical system equipment;

8. Supervise and guide Indonesian employees to complete the inspection of electrical system;

9. Complete relevant reports of electrical specialty on time and accurately;

10, complete all tasks assigned by leaders at all levels of the company.

Three, boiler operation main work content is as follows:

1. Cooperate with the main attendant and the boiler monitor to comprehensively monitor the operation of the boiler, and cooperate with the main attendant and the boiler monitor to maintain the safe, stable and economic operation of the boiler and complete the operation and maintenance of the boiler;

2, obey the orders of the boiler main attendant and boiler monitor;

3, complete the boiler ignition, boiler stop and other operations;

4, when the unit is abnormal and failure, assist the chief attendant and monitor to complete the relevant operations;

5. Responsible for the regular inspection of boiler equipment;

6. Supervise and guide Indonesian employees to complete boiler inspection;

7, timely and accurately complete the boiler professional report;

8. Complete all tasks assigned by leaders at all levels of the company.

2. What do thermal power plant maintenance do every day?

The operation and maintenance of thermal power plant mainly includes centralized control operation, electrical operation and boiler operation. The daily main work is as follows: 1. The main work of centralized control operation is as follows: 1. Strictly follow the operation rules of power plant to ensure safe operation; 2. Inspect the system on time, and fill in inspection records, operation records and handover records. 3, regularly check the power generation operation equipment, etc. ; 4, complete other work assigned by the leadership.

2. The main work contents of electrical operation are as follows: 1. Cooperate with the chief electrical attendant and monitor to complete the electrical operation and maintenance work, and cooperate with the chief electrical attendant and monitor to maintain the safe, stable and economical operation of the electrical system; 2. Complete the operation and maintenance of electrical specialty; 3, responsible for the preparation of electrical switching operation ticket; 4. Obey the orders of the main electrical attendant and monitor; 5. Complete all switching operations, synchronization, generator-transformer group disconnection and other operations of the electrical system; 6, when the unit is abnormal and failure, assist the chief electrical attendant and monitor to complete the relevant operations; 7, regularly responsible for the inspection of electrical system equipment; 8. Supervise and guide Indonesian employees to complete the inspection of electrical system; 9. Complete relevant reports of electrical specialty on time and accurately; 10, complete all tasks assigned by leaders at all levels of the company. 3. The main work of boiler operation is as follows: 1. Cooperate with the chief attendant and the boiler operation monitor to maintain the safe, stable and economical operation of the boiler and complete the operation and maintenance of the boiler; 2, obey the orders of the boiler main attendant and boiler monitor; 3, complete the boiler ignition, boiler stop and other operations; 4, when the unit is abnormal and failure, assist the chief attendant and monitor to complete the relevant operations; 5. Responsible for the regular inspection of boiler equipment; 6. Supervise and guide Indonesian employees to complete boiler inspection; 7, timely and accurately complete the boiler professional report; 8. Complete all tasks assigned by leaders at all levels of the company.

3. What are the daily maintenance and regular work of small steam turbines in power plants? The more detailed, the better.

1. Keep the following technical indicators: 1, steam pressure: (absolute) rated: 3.43±0.5 MPa, the highest 3.9MPa, the lowest 3. 1MPa2, steam temperature: rated 435℃, the highest 445℃ and the lowest 420℃.

3. Speed regulating oil pressure:1.08mpa. Pulse oil pressure: the first-stage pulse oil pressure is 0.225MPa, and the second-stage pulse oil pressure is 0. 1MPa (condensation condition).

5. The inlet oil pressure of the main oil pump is 0. 17MPa. 6. Fuel tank oil level: max +3, min-1807, axial displacement: 0.45~ 1, maximum. 1.2, minimum value. 0. 18, lubricating oil pressure: 0.12-0.1.08mpa.

10, the exhaust temperature with load shall not exceed 53℃, when it exceeds 60℃, start the water spray desuperheater, and the empty load shall not exceed 100℃. 1 1, and the vacuum is not lower than -0.086MPa.

12, bearing vibration is not more than 0.05mm, the maximum is not more than 0.08 mm.. 13, the oil temperature is 35-40℃, the bearing temperature is not higher than 85℃, and the oil return temperature is not higher than 65℃.

2. During the operation of the steam turbine, the following items should be monitored and adjusted frequently: 1, main steam temperature, pressure and vacuum, load, rotating speed and generator stator temperature. 2. The oil temperature, oil pressure and oil level of each part of the fuel tank.

3. Check the following items every 30 minutes. (1) Opening of main oil pump and speed regulating valve.

(2) Axial displacement. (3) Oil temperature and oil return at the inlet and outlet of each bearing.

Listen to the sound of main oil pump, bearing cylinder, front and rear shaft seals and other rotating parts. Listen at any time when the working conditions of the unit change. (4) Water temperature at the inlet and outlet of the generator.

(5) Changes of high and low feed, outlet water temperature and steam temperature. (6) Operation of each part of the air extractor and flowmeter.

4, pay attention to the meter readings, recorded once an hour, when the meter is not normal, should find out the reason, report to the monitor, listen to the voice of the main oil pump, bearing cylinder, front and rear shaft seals and other rotating parts once an hour (when the unit working conditions change, you should always listen). 5. When the working condition of the steam turbine changes, attention should be paid to the vibration thermal expansion indication and axial displacement, and the monitor should be reported if any abnormality is found.

6. Pay attention to (1) steam pressure, steam temperature, vacuum, exhaust temperature and bearing vibration when increasing or decreasing load. (2) Pay attention to the change of pressure in the balance box.

(3) The speed regulating steam valve moves smoothly without jamming. If there is any jam, report it to the monitor immediately. (4) Pay attention to the condenser water level.

7, according to the load change, in accordance with the provisions, high and low heater. III. Periodic Test and Switching Work Serial Number Test Project Day-shift Operator Guardian 1 Main Valve Activity Test Once a Day-shift Driver Monitor 2 Thermal Signal and Electromechanical Signal Test ~ ~ 3 Measure Turbine Vibration on Monday ~ ~ 4 Refueling at the lever twist of the control valve on Monday ~ Maintenance ~5 Jet Pump 10 Monthly Day ~ Driver ~ 0/5 Monthly Day. 25th to 7th of each month, insulation measuring switch of circulating water pump 5th to 8th of each month, insulation measuring test of electric oil pump 25th of each month ~ 10, insulation measuring switch of feed water pump 30th of each month ~1/oil cooler switch 20th of each month ~ 12, insulation measuring of condensate pump switch. Kloc-0/0 ~13 ~ After the overspeed test and maintenance of Kloc-0/5 emergency breaker, the day shift driver runs for 2000h h. Operation Director 16 Low-voltage trip test of emergency button after overhaul ~ ~ 17 Measure the insulation of drain pump on the 7th day of each month after overhaul ~ IV electrical monitoring of water supply deaerator. Equipment maintenance test method: 1. The main valve test will slowly close the main valve twice and then open it. Turn back half a turn to observe whether the main valve is flexible and free from blockage. 2. Vacuum system leak test (1) to keep the condenser water level. 2. Contact the control room to stabilize the unit load at the economic load, close the air valve of the main air extractor, record readings every minute, and test for 5 minutes. The vacuum drop rate is 0.002MPa per minute, and the maximum can not exceed 0.005MPa. For example, when the vacuum drops rapidly, the vacuum drop rate is 0.005 MPa.

(3) After the test, fully open the air door and record the test results in a special record book. 3. The overspeed test (1) of the emergency interrupter shall be carried out under the following circumstances: ① Start for the first time after overhaul.

(2) After shutdown, the speed control system has been dismantled or the emergency protector has been adjusted. (3) After the steam turbine runs for 2000 hours.

(4) When restarting after long-term downtime (downtime is greater than 1 month). (2) Preparation for overspeed test.

(1) The unit maintains idling operation. ② Prepare portable tachometer and tools.

③ The test speed is normal. (4) Manual emergency protector, the main valve adjusting valve is closed tightly, the main valve is opened, and the normal speed is restored.

(3) Test operation procedure ① Manual synchronizer handwheel, rotating speed 50- 100 rpm, rotating speed 33 15-3360 rpm. At this time, the emergency protector should act. If it doesn't move, stop braking immediately and check the adjustment. (2) After the emergency protector acts, close the main valve and manually set the synchronizer to the low position.

(3) Reduce the speed to 3000 rpm and do it again. ④ Requirements for overspeed test; In the same situation, it should be done three times. In three consecutive action tests, the difference between the first and second action speeds should not exceed 0.6%( 18 rpm), and the difference between the third action speed value and the average value of the first and second actions should not exceed 1%(30 rpm).

(5) After the test, the test results shall be recorded and reported to the shift supervisor.

4. Basic knowledge of power plants

1, electrical equipment fire, what kind of equipment can be charged to put out the fire? Answer: 12 1 1 carbon dioxide and carbon tetrachloride dry powder (the two answers are correct) 2. According to the frequency of electric shock accidents, which months of the year are the most concentrated months of electric shock accidents? A: What is the maximum voltage in safe voltage from June to September 3rd? Answer: 42 volts. 4. What is a safe DC current through people? Answer: 50mA5. What is the prescribed AC safety current through the human body? Answer: 10mA6. What should I do first to get an electric shock? And then do what right away? Answer: electric shock rescue; Artificial respiration.

7. How many kinds of protective devices are there to prevent direct lightning in our factory? Answer: lightning rod; Lightning protection network; Lightning eliminator. 8. When the conductor is grounded, the closer the human body is to the grounding point, the higher the step voltage, and the farther the distance, the lower the step voltage. Generally speaking, the step voltage can be regarded as zero.

A:/kloc-within 0/0m, 20m away from 30m away from A: B9. Low-voltage test pens are generally suitable for AC and DC voltages below () volts .. A: 220 B: 380 C: 500 A: C 10. The lighting facilities on the construction site should take measures to prevent electric shock ().

A: Wear insulating gloves B: Cut off the power C: Stand on the insulating board A: B 1 1. Whether the person who gets an electric shock can be rescued depends on () A: How to get an electric shock B: The magnitude of human body resistance C: The voltage of electric shock D: Can you leave the power supply as soon as possible for emergency rescue A: D 12: What is the main purpose of eliminating static electricity on the pipeline? Answer: Grounding 13, what is safe voltage? Answer: Under various environmental conditions, when the human body comes into contact with a charged body with a certain voltage, its tissues (such as skin, heart, viscera, respiratory organs and nervous system, etc. ) will not be damaged, and this voltage is called safe voltage. 14. What are the main factors that affect the harm of current to human body? A: The main factors are: current, human body resistance, duration of power-on, current frequency, voltage, current path and human body condition.

15, start the motor after it stops running. How many times does the hot state allow hot start? How many times is it allowed to start continuously in cold state? A: 1 time; 16, 2~3 times that of electric machinery and equipment used for construction, what protective measures should be taken? Answer: Protective grounding must be adopted and grounding must be repeated at the same time. 17, what are the two parts of electrical safety measures? A: Organizational measures and technical measures.

18, what are the main ways to get rid of low-voltage power supply? Answer: (1) cut off the power supply; (2) cut off the power cord; (3) Pull down the power cord; (4) Pull away the person who gets an electric shock; (5) Take corresponding rescue measures. When taking the above measures, pay attention to the use of insulation tools that meet the corresponding voltage level.

19, what is the sequence of disconnectors during power transmission? Answer: Connect the bus side first and then the line side. 20. Can the switch of distribution box switch be opened with load?

A: No.21. What kind of power tools must be used when using hand-held or mobile power tools in places with explosion and fire danger? A: There are explosion-proof measures.

22. How many volts of safe voltage should be used when using portable appliances or lighting lamps in wet workplaces or metal containers? Answer: 12V. 23, motor test run, can you move together and immediately press the stop button? Why? A: No.

The starting current is 6~7 times of the rated current, and stopping it immediately will burn out the switch. 24. Most motors in our factory are explosion-proof motors. What is the explosion-proof grade? Answer: dIIBT425, the explosion-proof motor of our factory, is it a waterproof motor? Answer: No.26, when the process load does not reach the rated load, the motor will not be overloaded, will it? Why? A: No.

Medium change, pump failure and motor failure will all lead to overload. 27, why not do fire tickets, temporary electricity tickets are not allowed to pick up temporary electricity? Answer: Temporary power consumption is the power consumption that generates sparks, which easily leads to electric shock safety accidents and fire and explosion accidents. You must apply for fire tickets and temporary electricity tickets, and take certain safety measures at the construction site before you can receive temporary electricity.

28, indoor lighting circuit electrical equipment, the total capacity of each circuit should not exceed how many kilowatts (1)1; ( 2 ) 2 ; ( 3 ) 3 。 A: (2) 29. The capacity of the socket should be adapted to the power load. How many electrical appliances are allowed to be connected to each socket? Answer: 1 30, when the relative humidity in the workplace is more than 75%, the working environment is easy to get an electric shock: (1) dangerous; (2) Particularly dangerous; (3) General answer: (1 )3 1. In order to prevent accidents caused by electrostatic sparks, all equipment metal pipelines and non-conductive materials pipelines used for processing, storing and conveying various combustible gases, liquids and powders must have (1) sufficient resistance; (2) It has a sufficiently small resistance; (3) Grounding 3 32. The power cord and wires of electric tools should be yellow-green double-color wires.

(1) phase; (2) working zero line; ③ Protective grounding. Answer: (3) 33. The most effective measure to ensure the personal safety of electrical maintenance personnel is.

(1) hang a signboard; (2) placing obstacles; (3) Maintenance equipment grounding and short circuit. Answer: (3) 34. From a safety point of view, there must be an obvious.

(1) signboard: (2) grounding position; (3) the disconnection point. Answer: (3) 35 The confirmation that the equipment or line has no electricity shall be subject to the instruction manual.

(1) voltmeter; (2) electroscope; (3) Disconnect the signal. A: (2) 36. It is forbidden to get close to various electrical equipment such as distribution boards (boxes), switches and transformers.

(1) Set fire extinguishers; (2) setting up fences; 3) Stack inflammable, explosive, damp and other items that affect the operation. Answer: (3) 37. In ordinary houses and offices, if the main purpose is to prevent electric shock, the leakage protection switch with leakage action current of mA should be selected.

( 1 ) 6 ; ( 2 ) 15 ; ( 3 ) 30 。 Answer: (3) 38. The power cord of portable electric tools and its switch board (box) must be used.

(1) double-layer plastic copper-core insulated conductor; (2) Double-stranded copper-core plastic cord; (3) Copper-core rubber insulated sheath or copper-core PVC insulated sheath cord. Answer: (3) 39. In general, the power cord length of portable electric tools should not exceed 100 meters.

( 1 ) 2 ; ( 2 ) 3 ; ( 3 ) 4 。 A: (2) 40. For hand-held power tools that are not used for a long time, insulation resistance must be measured before use, which requires i.