What are the strict requirements for diesel engine power generation room?

Precautions for installation of diesel generator sets.

Whether it's a general generator generator generator, a generator generator, or a diesel generator;Whether it is a rented generator set or a purchased diesel generator set, ** is very high. How to extend the service life of the generator and maximize the delivery rate of the generator is a big problem. This article mentions some problems that should be paid attention to when installing generators, and summarizes them according to the long-term experience of human and mechanical and electrical machines in solving production and life for customers.

1. The installation site should be well ventilated, there should be enough air inlet at the generator end, and there should be a good air outlet at the diesel engine end. The area of the air outlet should be more than multiple times the area of the water tank.

2. The surrounding area of the installation site should be kept clean, and items that can produce acidic, alkaline and other corrosive gases and vapors should be avoided nearby. If conditions permit, fire extinguishing devices should be configured.

3. For indoor use, the smoke exhaust pipe must be channeled outdoors, the pipe diameter must be the diameter of the smoke outlet pipe of the silencer, and the elbow of the connected pipeline should not exceed 3 to ensure the smooth flow of smoke exhaust, and the pipe should be tilted down 5-10 degrees to avoid rainwater injection;If the exhaust pipe is installed vertically upward, a rain cover must be installed.

4. When the foundation is made of concrete, the levelness must be measured with a level ruler during installation, so that the unit is fixed on the basis of the level. There should be a special anti-vibration pad or foot bolt between the unit and the foundation.

5. The shell of the unit must have reliable protective grounding, and for the generator that needs to have a neutral point direct grounding, it must be neutrally grounded by professionals, and equipped with lightning protection devices, and it is strictly forbidden to use the grounding device of the mains power to carry out direct grounding at the neutral point.

6. The two-way switch between the generator and the mains must be very reliable to prevent reverse power transmission. The wiring reliability of the bidirectional switch needs to be verified by the local power supply department.

Since it is a computer room, the first thing is to prevent leakage and fire, and the most important thing is ventilation.

1. If conditions permit, the brand of the diesel generator set and the control panel are placed separately, and the control panel is placed in the operation room with soundproof facilities, and there is an observation window to facilitate the operator to understand and grasp the operation status of the unit in time. Yanan diesel generator solution: 4000-080-999).

2. When installing the exhaust muffler, the exhaust port should be placed outdoors, the exhaust intake pipe should not be too long, and the surface of the exhaust pipe should be wrapped with thermal insulation material if possible to reduce heat dissipation to the room.

3. There should be good ventilation conditions in the computer room, there should be enough fresh air around the air filter, and items that produce corrosive gases such as acid gas are not allowed to be placed in the computer room.

4. The machine room of the closed generator set generally does not need forced ventilation, and the air can be exhausted to the outside through the fan carried by the unit to promote the air convection in the machine room, but the corresponding air inlet and outlet should be set. If the machine room of the open unit needs to be forced to ventilate, the air inlet should be low, and the exhaust fan should be installed in the high position of the machine room, so that the high-temperature airflow can be discharged outdoors in time.

5. In addition to the ventilation requirements for the installation of the unit, the machine room should consider the requirements of lightning protection, sound insulation, vibration isolation, fire protection, lighting, and sewage discharge, and there should be heating measures in the northern region to make the unit start normally.

6. Fuel pipelines and cables should be laid in the groove plate or trench as far as possible, and the cables can also be laid in the wire pipes. The daily fuel tank can be placed indoors, but it should meet the requirements.

7. The space distance around the crew should be left to prevent other objects from attacking and carrying goods, so that the operator can inspect and maintain.

1. Corresponding measures need to be taken for the anti-virus channel set up between the diesel generator world key room and the control room.

2 First of all, it is necessary to ensure that the ventilation equipment of the anti-virus passage is unobstructed and effective, and regular inspection and maintenance should be carried out to ensure air circulation and timely removal of harmful gases.

3 In addition, the anti-virus channel should be equipped with emergency communication equipment, so that the staff can contact the outside world in time to assist in the rescue in the event of an unexpected situation.

4 At the same time, the sealing performance of the anti-gas passage door is also very important, and the sealing performance of the door is required to be good, which can reduce the entry of harmful gases into the passage and ensure the safety of staff.

5 Finally, regular drills should be conducted for the anti-virus channel to improve the ability of employees to respond to emergencies and ensure the safety of the diesel generator room and the control room.

The ventilation of the diesel generator room consists of two parts, the usual ventilation and the working ventilation.

Usual ventilation: The machine room of air-cooled and water-cooled generators is usually ventilated for 6 times, and the oil storage room is ventilated for no less than 3 times. For the machine room with gas fire extinguishing system, after the fire, the ventilation system is responsible for the elimination of indoor exhaust gas, but not accident ventilation; In order to ensure the safety of people, it is recommended to press the accident ventilation to set the start button.

Working ventilation: water-cooled diesel generators must consider the amount of air required for working oxygen consumption; The air-cooled generator has a large cooling air volume, generally adopts natural air intake, and the diesel engine comes with fan pressure discharge, but the diesel generator comes with a fan pressure head of only about 150pa, and when the shaft resistance is large, it is necessary to increase the fan to overcome the shaft resistance, and the general air inlet shaft has a large resistance, and the fan is added; If the resistance of the exhaust shaft is large, the exhaust fan is added.

The diesel generator room uses gas to extinguish fires, and solenoid valves should be set on the inlet and exhaust channels, and when the fire gas fire extinguishing starts in the diesel generator room, these valves are closed interlockedly to ensure the fire extinguishing effect.

The smoke exhaust of diesel generator is pressure exhaust, the flue gas temperature is high, the airflow speed is high, the flue gas needs to be discharged at high altitude, the smoke pipe should be considered thermal insulation, and the shock absorption hanger needs to be set up at the same time.

The diesel generator room must pay attention to ventilation and smoke exhaust, otherwise it will affect the use of the generator, resulting in damage to the generator, and for the company that can not cut off the power, the generator damage is a very bad thing.

Ventilation is a problem that should be paid special attention to in the design of the generator set machine room, especially when the machine room is located in the basement, it must be dealt with well, otherwise it will directly affect the operation of the diesel engine generator set. Generally, the exhaust air of the unit should be equipped with a hot air pipe, and it is not advisable to let the diesel engine radiator dissipate the heat in the engine room, and then extract it by the exhaust fan. There should be enough fresh air in the computer room.

When the diesel engine is running, the air exchange volume of the engine room should be equal to or greater than the sum of the fresh air volume required for the combustion of the diesel engine and the fresh air volume required to maintain the room temperature of the engine room. The amount of fresh air required to maintain room temperature is calculated by the following formula:

c = where c ——— the required fresh air volume (m3 s);

p——— diesel engine rated power (kw);

t——— temperature rise in the computer room ( ).

The fresh air volume required to maintain the combustion of the diesel engine can be obtained from the unit manufacturer, and if there is no information, it can be calculated according to the power requirement per kilowatt (the diesel engine power is equipped with a multiple of the kilowatts of the main power generation power of the generator). The ventilation of the diesel generator room generally adopts the exhaust air to set up hot air pipes, and the air inlet is a natural air intake. The hot air pipe is connected with the diesel engine radiator, and its connection is connected with a soft joint, the hot air pipe should be straight, if you want to turn, the turning radius should be as large as possible and the inside should be smooth, and the air outlet should be as close as possible and facing the radiator.

The air inlet and outlet should be arranged at both ends of the unit to avoid a short circuit in the airflow and affect the heat dissipation effect. The area of the air outlet and air inlet of the computer room shall meet the requirements of the following formula:

s1 s2.

S——— diesel engine heat dissipation area;

s1——— area of air outlet;

S2——— area of air inlet.

In cold areas, attention should be paid to the influence of air inlet and exhaust outlet on the temperature of the computer room, so as to prevent the temperature of the computer room from being too low and affecting the start of the unit. The connection between the tuyere and the outdoor can be set up with a damper, which is usually closed and can be automatically opened when the unit is running.

It is more reasonable to say that it is better to separate the ventilation and smoke exhaust in the oil storage room of the generator set.