With the rapid development of Yuncheng's economic construction and urban construction, the fire situation has become increasingly severe. The existing fire-fighting vehicles and equipment can no longer meet the needs of the current fire rescue work. In order to improve the fire-fighting and fire-fighting rescue capability, fire-fighting bubble cars are more involved in firefighting work. At the current stage, China’s social and economic development has been developing rapidly. More and more high-rise buildings have emerged, and large-scale petrochemical enterprises have continued to emerge, placing higher demands on foam fire engines. The following briefly describes the structure of a foam fire truck.
1. foam fire extinguisher foam <br> principle <br> small relative density, fluidity, persistence and strong anti-burning, low thermal conductivity, high adhesion. These physical properties enable it to quickly cover the surface of the combustion fluid, which can block the transmission of flammable vapors, air, and heat, plus the cooling effect, which serves to extinguish the fire.
2. The foam fire configuration and operation principle of a foam fire <br> <br> vehicle chassis and special equipment mounted thereon moiety. Foam fire trucks produced at home and abroad mostly use the second-class universal car chassis provided by vehicle manufacturers. Its special devices mainly include power take-off devices, water foam tanks, equipment boxes, pump rooms, fire pumps, vacuum pumps, foam mixing devices, and fire guns. Its working principle is: through the power takeoff device, the power of the chassis engine of the automobile is output, and a set of transmission device drives the fire pump to work. Through the fire pump, the foam proportion mixing device mixes the water and the foam according to a certain ratio, and then passes the fire monitor. And foam fire extinguisher spray fire. Therefore, it is required that the chassis of the vehicle must meet a certain load quality and engine power. At present, national standards have been formulated, and the chassis is selected according to the national standard of GB6244-86 "General chassis series, type, basic parameters and technical requirements of fire engines", and GA39.5-92 "General Technical Conditions for Foam Fire Vehicles" is added according to the industry standard. The requirements of A must be that the power used by the engine must meet its requirements.
â—Ž Power output device The domestic foam fire engine adopts the power take mode of the main vehicle engine. The power takeoff arrangement can take many forms. At present, the medium and heavy foam fire engines mostly use the power takeoff device between the main clutch and the transmission. Sandwich PTO (transmission front) and shaft take power (transmission rear) two forms. The sandwich-type power take-off device is used to take out the power of the main engine and transmit it to the water pump through the transmission system to drive the water pump to operate, and a double-acting function can be realized. Most of the current use of this form.
â—Ž Water - Foam Tank Water - The foam tank is the main container for fire extinguishing agents on foam fire trucks. According to the development of the fire protection industry, various materials can be used. In the 1980s and 1990s, polyester fiberglass reinforced plastics were used. Now Gradually developed to use high-quality carbon steel materials and stainless steel materials.
â—Ž Equipment box The equipment box adopts the steel frame welded structure and the inner aluminum alloy plate or steel plate is applied. In recent years, the layout of the interior of the equipment box can be divided into four types: fixed-segment type, that is, each compartment frame is fixed type and can not be adjusted; the active segmentation type, that is, the split frame is made of aluminum alloy profiles. Aluminum plate, adjustable spacing; push-pull drawer type, which is made into a push-pull type of drawer for easy access to equipment, but the production is more complex; rotary rack type, that is to say each compartment is made into a small rotating equipment to cut files, imported foreign fire Many cars use this form. At present, the domestically-made new models use four forms for comprehensive use, and are rationally arranged according to the actual structure.
â—Ž Fire Pumps The fire pumps that are currently deployed in domestic foam fire engines can be roughly classified into three types: atmospheric pumps (low pressure pumps), ie, single-stage centrifugal pumps such as BS30, BS60, BS40, and R100 (import); Fire pump, multi-pole centrifugal pump. Such as 20.10/20.40, 20.10/30.60, 20.10/35.70, KSP1000 (import), etc.; high and low pressure pumps, such as NH20.NH30 (import), 40.10/6.30, etc., the fire pump configuration with the center and the rear of the points.
â—Ž Pump room The pump room is the same as the equipment box. Most of them are fully rigid frame welded structures. In addition to placing fire pumps, they are generally placed in pump-related equipment space for firefighters to operate.
â—Ž Foam Proportioning Unit Foam Proportioning Unit is the main equipment for extracting and delivering foam liquid in air foam fire extinguishing system. It can mix water and foam in proportions, generally 3%, 6%, and 9%. At present, China's foam proportioner is mainly based on foam liquid with a 6% mixture ratio. The mixer is generally divided into PH32, PH48 and PH64. In recent years, high-low pressure pumps have been introduced into production, and medium- and low-pressure pumps have used ring-pumped air-foam proportioning devices, which are integrated with the pump design. For example, the CB series car fire pumps produced by a company in China and the imported NH20, NH30 in Luxembourg Pumps, etc., are essential for foam fire trucks.
1. foam fire extinguisher foam <br> principle <br> small relative density, fluidity, persistence and strong anti-burning, low thermal conductivity, high adhesion. These physical properties enable it to quickly cover the surface of the combustion fluid, which can block the transmission of flammable vapors, air, and heat, plus the cooling effect, which serves to extinguish the fire.
2. The foam fire configuration and operation principle of a foam fire <br> <br> vehicle chassis and special equipment mounted thereon moiety. Foam fire trucks produced at home and abroad mostly use the second-class universal car chassis provided by vehicle manufacturers. Its special devices mainly include power take-off devices, water foam tanks, equipment boxes, pump rooms, fire pumps, vacuum pumps, foam mixing devices, and fire guns. Its working principle is: through the power takeoff device, the power of the chassis engine of the automobile is output, and a set of transmission device drives the fire pump to work. Through the fire pump, the foam proportion mixing device mixes the water and the foam according to a certain ratio, and then passes the fire monitor. And foam fire extinguisher spray fire. Therefore, it is required that the chassis of the vehicle must meet a certain load quality and engine power. At present, national standards have been formulated, and the chassis is selected according to the national standard of GB6244-86 "General chassis series, type, basic parameters and technical requirements of fire engines", and GA39.5-92 "General Technical Conditions for Foam Fire Vehicles" is added according to the industry standard. The requirements of A must be that the power used by the engine must meet its requirements.
â—Ž Power output device The domestic foam fire engine adopts the power take mode of the main vehicle engine. The power takeoff arrangement can take many forms. At present, the medium and heavy foam fire engines mostly use the power takeoff device between the main clutch and the transmission. Sandwich PTO (transmission front) and shaft take power (transmission rear) two forms. The sandwich-type power take-off device is used to take out the power of the main engine and transmit it to the water pump through the transmission system to drive the water pump to operate, and a double-acting function can be realized. Most of the current use of this form.
â—Ž Water - Foam Tank Water - The foam tank is the main container for fire extinguishing agents on foam fire trucks. According to the development of the fire protection industry, various materials can be used. In the 1980s and 1990s, polyester fiberglass reinforced plastics were used. Now Gradually developed to use high-quality carbon steel materials and stainless steel materials.
â—Ž Equipment box The equipment box adopts the steel frame welded structure and the inner aluminum alloy plate or steel plate is applied. In recent years, the layout of the interior of the equipment box can be divided into four types: fixed-segment type, that is, each compartment frame is fixed type and can not be adjusted; the active segmentation type, that is, the split frame is made of aluminum alloy profiles. Aluminum plate, adjustable spacing; push-pull drawer type, which is made into a push-pull type of drawer for easy access to equipment, but the production is more complex; rotary rack type, that is to say each compartment is made into a small rotating equipment to cut files, imported foreign fire Many cars use this form. At present, the domestically-made new models use four forms for comprehensive use, and are rationally arranged according to the actual structure.
â—Ž Fire Pumps The fire pumps that are currently deployed in domestic foam fire engines can be roughly classified into three types: atmospheric pumps (low pressure pumps), ie, single-stage centrifugal pumps such as BS30, BS60, BS40, and R100 (import); Fire pump, multi-pole centrifugal pump. Such as 20.10/20.40, 20.10/30.60, 20.10/35.70, KSP1000 (import), etc.; high and low pressure pumps, such as NH20.NH30 (import), 40.10/6.30, etc., the fire pump configuration with the center and the rear of the points.
â—Ž Pump room The pump room is the same as the equipment box. Most of them are fully rigid frame welded structures. In addition to placing fire pumps, they are generally placed in pump-related equipment space for firefighters to operate.
â—Ž Foam Proportioning Unit Foam Proportioning Unit is the main equipment for extracting and delivering foam liquid in air foam fire extinguishing system. It can mix water and foam in proportions, generally 3%, 6%, and 9%. At present, China's foam proportioner is mainly based on foam liquid with a 6% mixture ratio. The mixer is generally divided into PH32, PH48 and PH64. In recent years, high-low pressure pumps have been introduced into production, and medium- and low-pressure pumps have used ring-pumped air-foam proportioning devices, which are integrated with the pump design. For example, the CB series car fire pumps produced by a company in China and the imported NH20, NH30 in Luxembourg Pumps, etc., are essential for foam fire trucks.
Zhejiang Botuolini Machinery Co.,Ltd , https://www.chinaplungerpump.com