Analysis of 5 Reasons for Excessive Temperature of Diesel Fire Pump
Published:
2022-01-10
The engine cooling system of the diesel fire pump adopts a double closed loop heat exchanger. The system has the advantages of high cooling efficiency and little impact on the ambient temperature of the pump room. The flow direction of cooling water from the pump outlet pipe to the heat exchanger is controlled by a ball valve to keep the cooling water temperature of the engine body between 85 and 95 ℃. If the water temperature is too high, you can increase the opening of the ball valve, increase the heat dissipation capacity of the heat exchanger, and reduce the temperature of the engine cooling water. Conversely, the opening of the ball valve can be closed to increase the temperature of the engine cooling water.
The engine cooling system of the diesel fire pump adopts a double closed loop heat exchanger. The system has the advantages of high cooling efficiency and little impact on the ambient temperature of the pump room. The flow direction of cooling water from the pump outlet pipe to the heat exchanger is controlled by a ball valve to keep the cooling water temperature of the engine body between 85 and 95 ℃. If the water temperature is too high, you can increase the opening of the ball valve, increase the heat dissipation capacity of the heat exchanger, and reduce the temperature of the engine cooling water. Conversely, the opening of the ball valve can be closed to increase the temperature of the engine cooling water.
For diesel fire pump sets, such as automatic control fire pump sets, an electromagnetic valve is added parallel to the ball valve in the thermal pipeline. Generally, the solenoid valve is closed, and cooling water can meet the engine cooling requirements through the gate valve. When the engine cooling water temperature exceeds 95 ° C, the solenoid valve will automatically open to increase the cooling water flow and reduce the engine cooling water temperature. After 20 seconds, if the water temperature of the diesel engine still exceeds 95 ° C, the automatic control system will issue an audible and visual alarm and summon staff to the scene to check the cause.
There are several reasons why the temperature of the diesel fire pump is too high:
1: Diesel fire pump overload operation. Therefore, during the operation of the fire pump, it is necessary to avoid high-speed and overload operation of the diesel engine.
2: The oil radiator of the diesel fire pump is blocked by foreign matters, resulting in poor heat dissipation;
3. The position of the oil temperature regulating switch of the diesel fire pump is incorrect. In summer, oil does not dissipate heat through the radiator;
4: The cylinder of the diesel fire pump leaks, and high-temperature gas enters the oil pan to heat the oil in the oil pan.
5: The cooling fan speed of the air cooler of the diesel fire pump is too low, which reduces the cooling intensity and increases the temperature of the diesel engine.
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Guangzhou FDGEN Automation Control Equipment Co., Ltd. is a private high-tech enterprise specializing in the research, development and production of control systems for internal combustion engines, alternators, power systems, diesel fire pumps, and other equipment.
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