There are several oil pumps in the turbine generator set, and what role does each play

In the gasoline injection system, the fuel pump is an extremely critical component, and once the fuel pump fails, the car will have various undesirable symptoms.

1. What problems will a failure of the fuel pump bring to the car?

1. There is acceleration weakness, and there is a phenomenon of azole car when refueling urgently. 2. It is not easy to start when starting, and it takes a long time to hit the key. 3. Abnormal noise, there is a buzzing sound when driving. 4. The engine fault light is on. 5. Abnormal engine shaking.

Second, the life of the gasoline pump pump.

1) Theoretically, this thing should have the same life as the car, so there is no limit to the number of kilometers and time.

Some of the manifestations after the gasoline pump is damaged:

1. When the pump core is damaged, when the fuel supply system is working, there is no sound of the gasoline pump running when the key door is opened;

2. When the pump body is damaged, the engine cannot be started because the pressure relief and fuel pressure cannot reach the specified fuel pressure value, and it cannot be atomized well.

3. Don't wait until the gasoline lamp alarm is not refueled, because the gasoline pump relies on gasoline to conduct heat and cool down, and when the gasoline liquid level is too low, it will not play a role in cooling and heat dissipation, reducing the service life.

2) Failure of gasoline pump: Gasoline pump check valve damage: no residual pressure, resulting in difficulty in starting.

Centrifugal pump impeller wear: the oil supply pressure is reduced, and the acceleration is weak. Carbon brush wear:

The gasoline pump stops and cannot be started, in this case you can knock on the bottom of the fuel tank and the oil pump can still run. Mechanical faults such as rotor stagnation: The working current of the oil pump increases, resulting in damage to the relay or fuse.

Second, maintenance suggestions.

1. Most of the electric fuel pumps used in existing vehicles are installed in the fuel tank. Some vehicle access panels allow the replacement pump to be removed without disassembling the fuel tank.

2. The fuel pump in the tank is submerged in the gas to help them keep it cool will destroy the fuel pump.

3. The fuel filter should be replaced when the fuel pump is replaced.

4. A blocked fuel filter or a problem with the electrical system driving the fuel pump may cause symptoms similar to those of a failed fuel pump. Confirm that the pump is the problem before it is replaced.

5. Gasoline is highly flammable to avoid fire and personal injury.

What is the sequence of low oil pressure linkage of each oil pump in the lubricating oil system of the turbine generator set?

The low-oil pressure linkage sequence of the oil pump is that after the lubricating oil drops to a certain level, the AC lubricating oil pump is linked, and finally the accident oil pump (DC lubricating oil pump) is linked.

The function of the main oil pump of the steam turbine is to supply oil to the bearings of the unit, lubricate and cool the bearings. Stable and sufficient pressure oil is supplied to the speed control system and protection device.

The main oil pump is one of the important auxiliary parts of the steam turbine, which is installed inside the front box of the unit and provides all the lubricating oil and safety oil for the unit at full speed of the steam turbine. During the start and shutdown of the steam turbine, the lubricating oil and safety oil of the unit are provided by the auxiliary AC lubricating oil pump and the high-pressure starting oil pump. The use of the main oil pump can not only save the power of the plant, but also prevent the risk of oil and tile burning due to the power failure of the AC lubrication pump.

The working principle of the main oil pump: the main oil pump is a volute type double-suction centrifugal pump, which is installed on the turbine rotor in the front bearing seat, directly driven by the steam turbine spindle, and rigidly connected with the steam turbine spindle. Because this drive mode of the main oil pump can use the kinetic energy of the rotor to supply oil to the bearing between the inertia periods, it is the most reliable.

It has a large capacity, a stable outlet pressure, and the main oil pump can supply all the oil required by the lubricating oil system when operating at or near the rated speed. In addition, it also supplies a backup oil source for the generator seal oil system. The main oil pump cannot suction oil on its own, and must constantly supply pressure oil.

During the start and shutdown period, the main engine AC oil pump is supplied with oil, and the oil is supplied to the main oil pump by the oiler when the rated speed or volt circle is close to the rated speed, and the main oil pump is connected to the inlet of the oil injector when the main oil pump collapses and has a pipeline back to the oil tank, and there is a backstop door to prevent the oil from flowing backwards from the system, and is connected to the high-pressure sealed oil standby header. Mechanical overspeed shut-off and manual shut-off oil manifold are also connected here via throttle holes. When the unit is operating normally, the inlet pressure of the main oil pump is about, and the outlet oil pressure is about.

Dear, hello, I'm glad to answer for you, When the steam turbine generator set is turned on, the starting sequence of each oil pump, the warm pipe to the main valve, check the opening state of each auxiliary machine and pipeline valve 2, 1-2 hours before the rolling, put the head into the high oil temperature to 25 ° 3, 10 before the rush - the regret - 20 minutes, successively put in the auxiliary equipment, establish a vacuum 1) open the circulating water pump 2) put in the condensate pump, maintain the water level of the hot water well 3) turn on the water jet pump 4) when the cold state is put into the shaft seal cooler, 5) When the pressure equalization box is in the hot state, the first pressure equalization box is put in, and then the shaft seal cooler is put into the shaft seal cooler 6) After all the parameters meet the conditions of the flushing gas, turn on the high-pressure oil pump, open the brake to establish the security oil pressure, check whether the starting valve handwheel and the main valve are rotated to the end, and reset various alarm signals to ETS 7) Open the starting valve, and adjust the speed valve to 08) Open the main valve 9) There is no alarm information on the 505 display screen, press the reset button and the run button on the 505 to punch the gas machine 10) Pay attention to the outlet oil temperature of the oil cooler at 45° during the flushing process, adjust the oil temperature to 35°-45°11) to 3000r min, and after normal, put into the gas machine for protection.

Kiss! Hello Xixu, happy to answer your <>

When the steam turbine generator set is turned on, the starting sequence of each oil pump is as follows: start the circulating pump first, mainly to provide cooling water (including condensate pump) to the auxiliary engine. Otherwise, the condensate pump will not be able to start and start the condensate pump again.

1. The condenser must first establish a certain liquid level. 2. Start the condensate pump to establish a vacuum for the vacuum pump (Venturi pump) jet, and then the water returns to the condenser. 3. The condenser always maintains a certain liquid level, and when the liquid level is high, it is sent to the boiler through the self-adjusting valve.

Generator refers to the mechanical equipment that converts other forms of energy into electrical energy, which is driven by water turbines, steam turbines, diesel engines or other power machinery, and converts the energy generated by water, air flow, fuel combustion wheel or nuclear fission into mechanical energy and transmits it to the generator, and then converts it into electrical energy by the generator. Generators have a wide range of uses in industrial and agricultural production, national defense, science and technology, and daily life. There are many forms of generators, but their working principles are all based on the laws of electromagnetic induction and electromagnetic forces.

Therefore, the general principle of its construction is to use appropriate magnetic and conductive materials to form magnetic circuits and circuits that carry out electromagnetic induction with each other, so as to generate electromagnetic power and achieve the purpose of energy conversion. I hope my reply will help you <>

Do you have any other questions?

Summary. The role of the turbine pump is to direct the liquid coolant to the turbine to cool and stabilize the operating temperature of the turbine. This increases the efficiency and reliability of the turbine and ensures its proper operation.

The function of the steam turbine pump is to direct the liquid coolant to the steam turbine early in the morning to cool and stabilize the dust finch operating temperature of the steam turbine. This improves the efficiency and reliability of the turbine and ensures its proper operation.

I'm sorry I don't understand, but can you elaborate on that?

The role of a steam turbine pump is to direct the liquid coolant to the steam turbine to improve efficiency and reliability, and to ensure proper operation.

Most of the main oil pumps are driven by the main shaft of the steam turbine, which has the characteristics of large flow rate and stable outlet pressure, that is, the head-flow characteristics are gentle, so as to ensure the stable oil supply to the steam turbine speed regulation system and bearings under different working conditions. The main oil pump cannot be self-priming, so in the main oil pump is in operation, it needs to have pressure oil provided by the ejector to supply the main oil pump inlet.

In the process of rotor stationary or starting, the high-pressure starting oil pump replaces the main oil pump, and the high-pressure oil pump should be started first before the unit is started to supply the oil for the speed regulation system. After the unit enters the working speed, stop the high-pressure starting oil pump as a backup.

A high-pressure auxiliary oil pump is used when the unit is turned on and flushed, which plays the role of replacing the main oil pump.

An AC lubricating oil pump is used to supply oil to the turbine generator bearing in the state of cranking after the shutdown.

A DC lubricating oil pump is used to supply oil to the turbine generator when the power supply of the plant is interrupted or the AC lubricating oil pump fails.

The main oil pump is to supply pressure oil to the regulating security system and the oil injector when the unit is operating normally and at 3000 rpm.

There are four functions: one is to provide lubrication for the bearing, the other is to cool the bearing, the third is to provide sealing oil for the generator, and the fourth is to provide lubricating oil for the cranking device.

Lubricating oil is provided, and power oil is provided for the security system.