Fire Pump Equipment

Diesel engine fire pumps are mainly used in flood control and emergency municipal engineering, farmland irrigation, urban water supply and drainage, fire water supply, hydropower engineering, metallurgy, mining, petroleum, chemical and other industries, and play an important role in flood control and emergency conditions. A diesel engine fire pump is a machine that transports liquids or pressurizes liquids. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, suspoemulsions and liquid metals, etc., and can also transport liquid and gas mixtures. and liquids containing suspended solids. The technical parameters to measure the performance of the pump include flow rate, suction lift, lift, shaft power, water power, efficiency, etc.; according to different working principles, it can be divided into positive displacement pumps, vane pumps and other types. Positive displacement pumps use the change in the volume of their working chambers to transfer energy; vane pumps use the interaction between rotating blades and water to transfer energy, and there are centrifugal pumps, axial flow pumps and mixed flow pumps.

Mobile pump truck, also known as mobile pump truck or mobile pump station, replaces the original fixed pump station. Because of its vehicle-mounted installation, it is convenient and fast to operate. The main application occasions are: no fixed pumping station and no power supply area, assault flood control and drainage, emergency rescue, agricultural irrigation, aquaculture water supply, temporary water transfer, cofferdam pumping, industrial and municipal drainage, replacement of rainwater pumping station, etc.

China Better Technology Co., Ltd. has more than ten years of experience in the design, development, manufacture and sales of general fluid equipment. The self-produced and self-marketed model of the enterprise is exactly the advantage of the contemporary fluid equipment buyers in pursuit of cost performance . In the way of technological innovation, China • Better Technology Co., Ltd., with the help of high-tech production equipment, strictly controls the price of flood control mobile pump trucks. High cost performance, flood control and emergency mobile pump truck is the right buy here.

With the development of national science and technology, flood control and emergency mobile pump vehicles have also been well developed. Flood control and emergency mobile pump vehicles are also called mobile drainage pump vehicles. They are mainly suitable for drainage in areas without fixed pump stations and power sources, urban roads, and highways. Tunnel drainage, fire emergency water supply and other flood control and emergency rescue, as well as drainage in submerged areas, rivers, lakes, reservoirs, marine water environment treatment, agricultural drought-resistant water supply, temporary water transfer, etc. as a supplement to pumping stations, emergency pumping and drainage, etc., especially in urban waterlogging Drainage work in progress.

There are many types of multi-stage fire pumps, especially multi-stage fire pumps are more popular. Multi-stage fire pumps are a multi-functional product that can transport tap water and different liquids of various media, and can also be used in different Within the temperature range, different flow rates and different pressures can use multi-stage fire pumps. The application range of multi-stage fire pumps is very wide. It can be used in many industries such as petrochemical industry, medicine and food.

Diesel engine fire pump has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long life, convenient installation and maintenance, etc. This diesel engine pump set can transport clean water or other liquids whose physical and chemical properties are similar to water. It can also be used to transport hot water, oil, corrosive or abrasive media by changing the material of the pump’s flow parts, sealing form and adding a cooling system.

Diesel engine fire pumps are often used for emergency water supply in high-rise buildings, water companies, steel plants, wineries, chemical plants, hotels, hospitals, and other large-scale projects. Diesel engine fire pump is suitable for unattended emergency water supply system. The product has the characteristics of advanced technology, high degree of automation, superior performance, complete protection functions, reasonable structure, simple installation, and high cost performance. net pressure.

The mobile diesel engine drainage pump truck can quickly and flexibly arrive at the application site, transport the urgently needed water to the destination in a short time, or pump and drain the accumulated water on urban roads or airports in a short time in an emergency to achieve flood control and disaster relief The purpose of protecting the safety of people’s life and property.

The mobile pump truck has the characteristics of large flow rate, high suction lift and fast water filling speed. Pump trucks can be equipped with various pump products, such as end-suction pumps, mixed-flow pumps, self-priming pumps, etc., which are all pumps with large drainage flow and light weight. Urban roads, village roads, tunnel emergency and emergency drainage in various messy working conditions, especially in the case of low liquid level pumping and drainage, long-distance pumping and drainage, etc., the large flow drainage pump truck can quickly relieve the drainage pressure in emergency flood situations.

The trailer-type mobile pump truck is designed by the unique design of the pump body and the impeller flow channel using the principle of axial backflow and external mixing. It can be like a general self-priming clean water pump without installing a bottom valve and irrigation and diversion, and it can also be suction and discharge. Water bodies with large solid impurities and long fiber substances can be widely used in drought relief, flood control and drainage, municipal sewage discharge, emergency drainage, etc.

Fire pumps are used to pump various liquids. They are ideal pumps and fire protection systems for building non-leakage, pollution-free civilized workshops and civilized factories. They are often installed on fire trucks, fixed fire extinguishing systems or other fire-fighting facilities for transportation Special pumps for liquid extinguishing agents such as water or foam solutions. Fire pumps are widely used in environmental protection, water treatment, fire protection and other departments.

The diesel engine fire pump can form an automatic water fire water supply system with electric pumps and jockey pumps, and can be linked with the fire control center.
When the diesel engine fire pump set receives the starting command, if the mains power is cut off, the automatic control cabinet of the diesel engine will immediately send a start signal to the starting motor of the pump set, start the motor, start the diesel engine at idle speed, and then gradually adjust the throttle to accelerate the diesel engine until Rated speed. The control system will automatically monitor the operation of the diesel engine, such as the oil pressure, oil temperature, speed of the diesel engine, outlet pressure of the water pump, etc., and determine whether the diesel engine starts normally through automatic monitoring. If the start fails, the control system will send a restart signal, and if the three starts fail, the automatic control system will send a failure alarm. When the diesel engine fire pump set receives a signal that the pressure of the pipe network is restored or the mains power is restored to normal, the pump set will quickly slow down and stop automatically after monitoring the idle position for a period of time.

1. When installing the water inlet pipe, the horizontal section should be horizontal or upward
2. There are many elbows used on the water inlet pipe
3. The water inlet of the water pump is directly connected with the elbow
4. The last section of the water inlet pipe equipped with a bottom valve is not vertical
5. The position of the water inlet of the water inlet pipe is wrong
6. The outlet pipe is above the normal water level of the outlet pool

The lower the pumping head of the fire pump, the smaller the motor load. Under the misleading of this kind of misunderstanding, when purchasing a water pump, the head of the water pump is often selected to be very high. In fact, for centrifugal water pumps, when the pump model is determined, the power consumption is proportional to the actual flow of the pump. The flow rate of the water pump will decrease with the increase of the head, so the higher the head, the smaller the flow rate and the smaller the power consumption. Conversely, the lower the lift, the greater the flow and the greater the power consumption. Therefore, in order to prevent the motor from overloading, it is generally required that the actual pumping head of the pump should not be lower than 60% of the calibrated head.

The basis for the selection of fire pumps should be based on the process flow, water supply and drainage requirements, and be considered from five aspects, namely, liquid delivery volume, device lift, liquid properties, pipeline layout, and operating conditions. Fire pumps are mainly divided into vertical and horizontal types. The flow rate of the conveying liquid is one of the important performance data for pump selection. It is directly related to the production capacity of the entire device. The working conditions of the fire pump: flow rate: 2～1400m3/h, Head: 5～130m, maximum working pressure of the system: ≤1.6MPa, working temperature: -15℃～+80℃.

As the name implies, fire pumps are used in firefighting. They are divided into different types according to different classification methods. They are widely used in environmental protection, water treatment, firefighting and other departments to pump various liquids due to their fully sealed, leak-free, and corrosion-resistant characteristics. , It is the ideal pump for creating leak-free, pollution-free civilized workshops and civilized factories.

answer:
1. The raceways of the inner and outer rings are peeled off, cracked or severely worn.
2. The rolling body is out of round or the surface is peeled off, with cracks.
3. The cage is seriously deformed or worn, and the rolling elements cannot be fixed.
4. There is vibration or noise when turning, and there is reverse reversal or braking when stopping.
5. The fit clearance of the bearing exceeds the maximum value of the specified clearance.

answer:
1. Wrong installation direction
2. Loose or worn
3. Insufficient amount of lubricating oil, oil quality
4. Deformation of the oil throwing ring leads to failure to carry oil
5. Small axial clearance

answer:
1. Loss of rotation accuracy
2. Large rotation resistance
3. There is noise during operation.

Fire pumps are a type of pump used in fire fighting. Compared to ordinary pumps, fire pumps have higher standards and requirements in terms of sealing, corrosion resistance and operational efficiency. Before running the fire pump equipment, we need to discharge the gas inside the pump, do you know what is the significance of doing so? The following is the answer from Shanghai Xizhiquan.

1. If there is gas inside the fire pump, then the equipment cannot form a sufficient vacuum during operation, resulting in the liquid not being able to be sucked up. This phenomenon is called gas binding, and is a phenomenon that often results from many operators not understanding this operation.
2, understand the formation of gas binding causes, we will understand how to avoid this problem occurs. Before the fire pump equipment is started, the pump casing needs to be filled with liquid. In the pump suction pipe mouth need to be equipped with a non-return valve, can effectively avoid the pump in the liquid due to gravity into the low tank, if the pump position is low, there is no need to carry out filling the pump.
3. The compressed gas inside the fire pump will occupy a certain space in the fire pump, making it impossible to seal it.

Therefore, the operation of deflating the fire pump before putting it into use can increase the vacuum of the equipment and increase the pumping capacity of the pump, thus effectively improving the efficiency of the equipment and reducing the waste of resources.

In the fire fighting pipeline pump, according to the different installation methods can be divided into vertical fire pumps and horizontal fire pumps, many people have questions about these two common pumps, what is the difference between the two? Shanghai Xizhiquan will explain the difference between horizontal and vertical pumps.

Obviously, different installation methods take up different space. Vertical pipeline pumps are installed vertically, covering a relatively small area, and vertical fire pumps do not require a foundation, while horizontal fire pumps need to be equipped with a base.

According to the different structures of the two pumps, it can be concluded that there is also a certain difference in the ease of maintenance of the two types of fire fighting pipeline pumps. The impeller of the vertical fire pump needs to be dismantled from top to bottom, which makes maintenance more difficult; the horizontal fire pump only needs to have the inlet pipe removed so that the impeller can be overhauled, which is relatively simple.

Due to the different inlet and outlet pipe directions, the pipeline connection between vertical and horizontal is also different. As the vertical pump is a bottom-up structure, while the horizontal fire pump is longitudinally arranged on the base, so the motor of the vertical pump and the pump body are connected in the form of sub-mouth connection, while the horizontal pump needs to use couplings to connect with the motor, and the horizontal pipeline pump needs to be corrected regularly.

Translated with www.DeepL.com/Translator (free version)

Diesel engine fire pumps are often used for emergency water supply in high-rise buildings, water companies, steel plants, wineries, chemical plants, hotels, hospitals, and other large-scale projects. The diesel emergency water supply pump set is suitable for unattended emergency water supply systems. The product has the characteristics of high automation, superior performance, complete protection functions, reasonable structure, simple installation, and high cost performance. When the factory suddenly loses power, the diesel emergency water supply pump set automatically starts to replenish pipe network pressure.

Electric fire pumps are mainly used for pressurized water supply for fire protection systems, and can also be used for drainage of factories and mines. Mainly used in industrial and mining enterprises, engineering construction, high-rise buildings and residential area fire hydrant water supply system, automatic sprinkler fire extinguishing water supply system.

The biggest difference between a diesel engine fire pump and an electric water pump is that it has its own independent power supply system—the battery. Therefore, the start-up and operation of the diesel engine fire pump can be completely separated from the mains.

The diesel engine fire pump is usually used as a backup facility, and it will only start automatically when the electric water pump fails or the power is cut off when the fire signal comes. When equipped with an ultra-low pressure pump starting device, the matching electric pump control cabinet should also be equipped with an ultra-low pressure pump starting device, and the lower limit of pump starting should have a certain pressure difference. Of course, it is also possible to design a control system that is more suitable for customer needs according to customer requirements.

1. The weight of the pipeline should not be borne on the pump, otherwise the pump will be easily damaged.

　　2. The pump and motor are of integral structure. The pump and the motor are an integral structure. It is calibrated by the manufacturer at the time of shipment, so there is no need to adjust the contract when installing it. This makes installation very easy.

　　3. The foot bolt must be tightened during installation. The pump should be inspected at regular intervals to prevent it from loosening. To prevent the pump from vibrating violently when starting up and affecting the performance of the pump.

　　4. Before installing the pump, check carefully whether there are any hard objects (such as stones, iron sand, etc.) in the flow channel of the pump that may affect the operation of the pump, so as to avoid damaging the overflow parts when the pump is in operation.

　　5. For easy maintenance and safety in use. Install a regulating valve on the pump’s throttle and a pressure gauge near the pump’s throttle, and for high head pumps. To prevent water hammer. A check valve should also be installed in front of the outlet gate valve to cope with sudden power failure and other loss of power accidents, thus ensuring that the pump operates under suitable working conditions and increasing the service life of the pump.

　　6. The pump is used in suction range situations. It should be equipped with a bottom valve, and the pipeline should not have too many bends in the mouth of the flume, and there should be no water leakage or air leakage in the same inch. To avoid affecting the suction performance of the pump.

　　7, in order not to make impurities burst into the pump and block the flow channel to affect the performance. A filter should be installed in front of the pump’s flume.

　　8, the installation of pipeline bary for the rotation of the pump rotor parts, should be no grinding sound or jamming phenomenon, otherwise the pump should be disassembled to check the reasons.

1, Vertical fire pump, multi-stage sectional structure. The pump inlet and outlet flanges are in the same straight line, the impeller is hydrodynamically balanced, axial force, a guide bearing at the lower end of the pump. The shaft is fixed to the motor shaft by means of a clamping coupling. The outer cylinder is a stainless steel cylinder.

　　2, The shaft seal is mechanically sealed.

　　3, The pump is driven by the motor and rotates in a clockwise direction when viewed from the motor end.

　　4, The pump outlet is equipped with an exhaust valve (air nozzle), which can ensure that the gas in the pump can be completely exhausted.

　　5, The impeller can be made of bronze. Avoid rusting between the impeller and the guide vane after long-term shutdown.

A multistage pump is a multistage centrifugal pump in which two or more impellers are installed on the pump shaft and connected in series to work together. A horizontal multistage centrifugal pump refers to a multistage pump in which centrifugal pumps with two or more impellers are combined. The multistage centrifugal pump is characterized by high efficiency and energy saving, wide range of use, special purpose, stable operation, long service life, convenient installation and maintenance, etc.

Fire pumps are water intake equipment for fire facilities. At least one or two fire pumps are equipped. Our commonly used fire pumps are electric fire pumps and diesel engine fire pumps. The difference between them is that electric fire pumps require power system supply. In the event of a power failure, the diesel engine fire pump can start at any time to compensate for the original position of the electric fire pump.

The fire pump is mainly used to deliver water in the fire system. As an indispensable tool for the fire system, the fire pump has the characteristics of simple structure and stable performance. Due to these advantages of high performance and low energy consumption, the safety and efficiency of the fire pump are far ahead of the pipeline tools of the same purpose.