How to stop the diesel engine fire pump rightly？
The diesel engine fire pump can be installed together with the fire control cabinet. It has complete functions, high-degree automation, compact structure, automatic fault alarm and receiving the start signal. It can complete the starting procedure by itself and can quickly put into full-load operation. The unit can be equipped with the damper, rubber flexible joint and exhaust port with bellows silencer as required. Insufficient fuel, low battery voltage, high-temperature lubricating oil, over speed, etc., with the alarm device to ensure diesel engine can start in the low temperature. The entire system is safe and reliable and easy to use. At present, diesel engine fire pumps have been widely used in environmental protection, water treatment, fire fighting, and other departments to pump all kinds of liquids, is to create a leak-free, pollution-free civilized workshop, civilized factory.
In general, the main control methods for diesel engine fire pumps are as follows:
1. Manual control: The diesel engine fire pump is manually pressed by the control panel button, and the running process is automatically completed by a preset program.
2. Automatic control: After the equipment receives fire/pipe network pressure or other automatic control signals, it responds to start/stop.
3. Remote control: Remote monitoring, remote control, remote communication, and remote adjustment are realized by the computer through the communication network.
4. manual control: in the case of equipment maintenance or other special needs, you can manually start and manually complete the various operating procedures (at this time the diesel engine fire pump intelligent control system no longer works)
At present, diesel engine fire pumps generally use emergency power generation diesel engines as driving equipment and confuse emergency power generation diesel engines with fire pump diesel engines. Simply consider the emergency power generation diesel engine as a fire pump diesel engine after considering a certain power margin. This is just a quantitative view of the emergency power generation diesel engine as a fire pump diesel engine from the power point of view, and it has not changed in essence or is an emergency power generation diesel engine. Instead of a dedicated diesel engine for fire pumps. The basic unit of diesel engine mobile fire pump consists of the diesel engine, underframe, radiator and fan, high-elastic coupling, water pump, diesel tank and control panel. The pump is directly coupled to the diesel engine through a high-elastic coupling or diaphragm coupling and is mounted on a common channel steel frame. Cooling of the engine is performed by the engine-driven fan to cool the cooling water tank. The entire cooling system forms a closed loop and the water tank is also mounted on the chassis. The control panel and the unit are separated, and the two are connected by a control cable, a signal cable, and a power cable. The basic unit is suitable for fire protection systems with backwater sources. If the fire protection system requires the pump unit to have a water diversion function, an automatic water diversion device may be installed on the basis of the basic unit. The emergency power generation diesel engine will stop due to high cooling temperature and low oil pressure shutdown, the fire pump diesel engine will only stop under over speed conditions.
In use, the stop of diesel engine fire pumps is a part that many people will ignore, and this is more critical, which will have an impact on the effective service life of the
equipment:
1. Before stopping, remove the load at first, then adjust the oil supply speed control handle, gradually reduce the speed to 700~1000 r/min, and then dial the stop handle to stop after running for a few minutes.
2. After stopping, the electric key should be dialed back to the middle position to prevent the battery current from flowing backward. After stopping in winter or cold areas, open the drain valve on the side of the body, fresh water pump, oil cooler (or U-shaped cooling tube) and radiator, etc., and drain the cooling water to prevent freezing and cracking. If antifreeze is used, no need to drain cooling water.
3. In case of emergency or special circumstances, in order to avoid the stopping accident caused by a serious accident of the diesel engine, the emergency stopping handle is dialed at this time, and the diesel engine can stop immediately.