The starting conditions of transformer oil discharge and nitrogen injection for fire extinguishing.
The transformer is one of the important equipment in the power system, and its safe operation is essential for the stability of the power system. However, transformer fire accidents occur from time to time due to internal short circuits, overloads, external ignition sources and other reasons in the transformer. In order to effectively deal with transformer fires, many power companies have adopted oil and nitrogen injection fire extinguishing systems. This article will introduce the starting conditions of transformer oil discharge nitrogen injection fire extinguishing in detail, so that readers can better understand the working principle and use method of the system.
1. The basic principle of oil and nitrogen injection fire extinguishing system.
An oil and nitrogen injection fire extinguishing system is a method of extinguishing a fire by removing oil from the inside of a transformer and injecting nitrogen. When a fire breaks out in a transformer, the system starts up in a very short time, quickly drains the oil inside the transformer, and injects a large amount of nitrogen into the transformer. Nitrogen is an inert gas that effectively dilutes oxygen in the air, thereby inhibiting the combustion of the flame. At the same time, nitrogen can also reduce the temperature inside the transformer, further accelerating the extinguishing of fires.
2. Starting conditions for oil drainage and nitrogen injection to extinguish fires.
The starting conditions of the oil and nitrogen injection fire extinguishing system usually include the following aspects:
1.Alarm signals from fire detectors.
The oil and nitrogen injection fire extinguishing system is usually connected to a fire detector, and when the fire detector detects a fire signal inside the transformer, it will send an alarm signal to the fire extinguishing system. After receiving the alarm signal, the fire extinguishing system will immediately start the oil discharge and nitrogen injection program.
2.The oil temperature of the transformer increases.
An increase in transformer oil temperature is one of the common signs of a transformer fire. When the transformer oil temperature exceeds a preset threshold, the extinguishing system also initiates the oil drain nitrogen injection program. This is usually achieved by installing a temperature sensor on the transformer.
3.The transformer oil level drops.
A drop in the transformer oil level can be caused by an oil leak inside the transformer or a fire. When the oil level drops below a preset threshold, the extinguishing system also initiates the oil drain nitrogen injection program. This is usually achieved by installing an oil level sensor on the transformer.
4.Manual start.
In addition to the above-mentioned automatic start conditions, oil drain nitrogen extinguishing systems are often equipped with a manual start button. When the staff finds that the transformer is on fire, they can immediately press the manual start button to start the oil discharge and nitrogen injection program.
3. Advantages of oil drainage and nitrogen injection fire extinguishing system.
The oil and nitrogen injection fire extinguishing system has the following advantages:
1.The fire is extinguished quickly.
The oil and nitrogen injection fire extinguishing system can drain the oil inside the transformer and inject nitrogen gas in a very short time, so as to quickly extinguish the fire.
2.Little damage to the equipment.
Compared with other fire extinguishing methods, the oil and nitrogen injection fire extinguishing system causes less damage to the transformer. Since nitrogen is an inert gas, it does not cause corrosion or damage to the equipment inside the transformer.
3.Environmental protection.
The oil and nitrogen injection fire extinguishing system will not produce any harmful substances and will not pollute the environment.
4. Precautions for the use of oil drainage and nitrogen injection fire extinguishing system.
When using an oil and nitrogen injection fire extinguishing system, the following matters need to be noted:
1.Check the system regularly.
In order to ensure the normal operation of the oil and nitrogen injection fire extinguishing system, it is necessary to regularly check whether all parts of the system are in good condition, including fire detectors, temperature sensors, oil level sensors, etc.
2.Keep the system clean.
The oil and nitrogen injection fire extinguishing system needs to be kept clean to avoid debris or dust entering the system and affecting its normal operation.
3.Code of Conduct.
When using the oil and nitrogen injection fire extinguishing system, it is necessary to operate in accordance with the operating procedures to avoid unnecessary accidents caused by misoperation.
In short, the oil and nitrogen injection fire extinguishing system is an effective transformer fire extinguishing method, which has the advantages of fast fire extinguishing speed, small damage to equipment, and environmental protection. When using the system, you need to pay attention to things such as keeping the system clean, regularly checking the system, operating specifications, etc., to ensure that it is working properly.