Product Overview
XBC Series Diesel Fire Pump Set is a product suitable for fire protection and sprinkler facilities in construction projects with high efficiency, long service life and high reliability (no failure of starting after long-term disuse).
XBC Series Diesel Fire Pump Set can be used to transport clean water below 80°C without solid particles or liquids with physical and chemical properties similar to water. On the premise of meeting the fire protection conditions, it also takes into account the working conditions of life and production water supply. The product can be used for independent fire water supply system, fire protection and life shared water supply system, and can also be used in construction, municipal administration, industry and mining, water supply and drainage, ships, field operations and other occasions.
XBC diesel fire pump is installed together with electrical instruments and other equipment as a complete set, with complete functions, high degree of automation, compact structure, automatic fault alarm and receiving start signal, completing the start procedure, and can quickly put into full load operation. The unit can be equipped with shock absorber, rubber flexible joint, and bellows silencer at the exhaust port according to demand. In case of insufficient fuel, low battery voltage, high lubricating oil temperature, overspeed, etc., an alarm device is provided to ensure that the diesel engine starts in a low-temperature environment. The entire system is safe, reliable and easy to use.
Main features
1. The electric pump is the main fire pump and can start automatically according to the fire situation;
2. Equipped with a constant pressure pump to maintain constant pipe network pressure;
3. The XBC series diesel engine fire pump is a backup fire pump and automatically starts when there is no power supply for fire fighting;
4. The diesel engine pump starts when the electric pump fails.
Products Application
The XBC type diesel engine fire pump group is mainly used for pressurized water delivery in fire protection system pipelines. It can also be used for industrial and urban water supply and drainage, pressurized water delivery in high-rise buildings, long-distance water delivery, heating, bathrooms, boiler hot and cold water circulation pressurized air conditioning refrigeration system water delivery and equipment matching.
Structure
The pump body and pump cover of the XBC series diesel engine fire pump are split from the back of the impeller, which is usually called the rear-opening structure. Its advantage is that it is easy to repair. During the repair, the pump body, suction pipeline, discharge pipeline and motor do not need to be moved. It is only necessary to remove (lengthen) the intermediate connecting piece of the coupling to withdraw the rotor component for repair.
The pump housing (i.e. the pump body and pump cover) constitutes the working room of the pump. The impeller, shaft and rolling bearing are the rotor of the pump. The suspension bearing component support component supports the rotor component of the pump, and the rolling bearing bears the radial and axial forces of the pump.
In order to balance the axial force of the pump, most pumps are equipped with sealing rings in front and behind the impeller, and a balancing hole is provided on the rear cover plate of the impeller. Since the axial force of some pumps is not large, no sealing ring and balancing hole are provided on the back of the impeller.
The axial sealing ring of the pump is composed of a packing gland, a packing ring, and a packing to prevent air inlet or large amounts of water leakage. If the impeller of the pump is balanced, the cavity with soft packing is connected to the impeller inlet. If the liquid at the impeller inlet is in a vacuum state, it is easy to enter along the surface of the sleeve. Therefore, a packing ring is installed in the packing cavity through the small hole on the pump cover to lead the pressure water in the pump chamber to the packing ring for sealing. If the impeller of the pump does not have a balancing hole, since the liquid pressure on the back of the impeller is greater than the atmospheric pressure, there is no leakage problem, so the packing ring can be omitted.
To avoid shaft wear, a sleeve protection is installed at the part where the shaft passes through the packing cavity. An O-ring is installed between the sleeve and the shaft to prevent air intake or water leakage along the mating surface.
The transmission mode of the pump is connected to the motor through an extended elastic coupling. The rotation direction of the pump, from the drive end, is clockwise.
The inlet and outlet flanges of the pump are designed according to the 1.6Mpa pressure, and the pipeline is convenient to match.
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