fire pump set

Horizontal multi-stage fire pumps can be used to transport clear water without solid particles and liquids with physical and chemical properties similar to water. It is mainly used in pressurized water supply for fire protection system, heating, bathroom, boiler cold and warm water cycle pressurization, water supply for air conditioning and refrigeration system, and equipment matching and other occasions.

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.

Vertical turbine pumps, electric motor fire pumps, diesel engine fire pumps and submersible deep well pumps can all use mechanical seals, and mechanical seals with different materials and performances can be selected according to different environments. In pumps with different frequency of use, mechanical seals should be inspected and maintained according to actual conditions to ensure their long-term stability.

The name of the fire pump is the name of the fire pump. The pump used on fire protection. The fire pump is introduced to foreign products. According to different classification methods, it is divided into different types. It is widely used in environmental protection, water treatment, fire protection, etc. The department is used to pump all kinds of liquids. It is an ideal pump and fire system for creating non -leakage and pollution -free civilized workshops and civilized factories. The pump types are similar, but the raising and traffic are different. The selection basis for the fire pump should be considered according to the process of process and water drainage requirements.

Answer: First of all, we must understand the relationship between pressure and lift: pressure = liquid density * g * lift (g = 0.981). In fact, the fire water pump can not only transport water, as long as the physical and chemical characteristics and water liquid are fine, but most of them transport water in daily life. The density of water is 1 ton per cubic meter. It can be obtained from the above formula : Pressure=1000*0.981*lift, pressure=0.981*lift, at this time the pressure and lift are almost the same, so whether we refer to lift or pressure, it can basically be regarded as a parameter.

1. When the pipeline fire pump noise occurs, the most likely fault is the imbalance of the fire pump rotor. Since the water output of the fire pump mainly depends on the high-speed rotation of the rotor, when the rotor is unbalanced for some reason, it will cause the fire pump to deviate from the original rotation track during the rotation process, resulting in the fire pump appearing in the pipeline. When judging the failure of the rotor, it is mainly to replace the rotor of the pump or make a balance hole on the rotor blade of the pump to find out the balance difference.

2. The production noise of the fire pump pipeline has a certain effect. For example, forcing a small flow of a pipe “fire pump” to increase power to increase the original flow will create vibrations in the fire pump. Therefore, whether you use a pipeline fire pump or other types of water pumps, you should follow the water pump use standards to prevent the water pump from making noise, which will affect the service life of the water pump. The solution is to use the pump according to the instructions. If the efficiency of use is affected, it is recommended to replace the appropriate pipeline “fire pump” for use.

3. The installation did not meet the standards, resulting in abnormal noise from the pipeline fire pump. Fire pumps and fire hydrant pumps vibrate at a high frequency during operation, so they must be fixed during installation. If the bolt between the pump body and the base or between the base and the base is loose when installing the pipe fire pump, the transmission shaft between the pump body and the motor of the pipe pump will be bent. It lowered the concentricity and caused an imbalance in the fire pump rotor. This is one of the noise phenomena of fire pumps. In order to improve this phenomenon, the pump shaft of the fire pump needs to be balanced and then reinstalled. Finally, the base of the pump was reinforced.

4. Blockage of the impeller passage can also cause fire pump noise. When the internal flow channel of the fire pump is blocked by foreign matter, it will cause uneven resistance of the fire pump impeller and vibrate the fire pump. Therefore, it is necessary to regularly disassemble and maintain the fire pump to prevent foreign matter from blocking the pipeline.

5. The bearing of the fire pump is damaged. Bearing damage generally does not occur on the main body of an in-line fire pump. If there is a problem with the quality of the pump, or because some hard objects enter the pump body of the tube pump, the bearing is damaged, and the rotor is unstable at first. Causes noise from pipeline fire pumps.

6. Finally, cavitation, cavitation occurs in any type of pump, but some are obviously not noticeable. If cavitation occurs, consider raising the fire pump or increasing the pressure in the piping. If the cavitation phenomenon cannot be changed, the fire pump model needs to be redesigned and replaced.

1. Water filling treatment Before selecting the power-on power, make sure that the fire pump should be filled with water when it is turned off, and the suction should be increased to make the pressure difference larger and quickly clean up some acid-base reagents and other pollutants. Make sure to fill the water well.

2. Selection of electrified power The horsepower of the fire pump will be selected according to the size of the pump. Before electrifying the pump, carefully check the electrical power. Once the power is not grasped accurately, it is easy to cause insufficient suction. Therefore, in order to make it have sufficient suction, the power should be selected reasonably. If there is no electricity, the fire pump cannot be started, let alone used. But does it mean that the pump can be used as long as there is electricity? Not necessarily, the pump can only be used if the electrified power is reasonable and the voltage is within the normal range.

First of all, check whether the oil level is normal and cannot reach the oil mark line on the normal surface. If it is not, we must replenish it in time, but remember one thing, it cannot exceed the amount of the oil quantity indicator line.

Secondly, check the radiator. The water is appropriate. If it is not added in time, the water that needs to be added must be clean water, as long as it is clean water, or tap water is fine. Why not use groundwater, because impurities in groundwater can easily form scales in the water tank, which affects the cooling effect and is also prone to failure. In winter, we drive to preheat the car, add coolant to the car, and the fire pump is no exception. The weather in the north is very cold, so add the coolant to the fire pump according to the actual temperature.

Finally, check the installation of each part of the fire pump, such as whether they are stable, the connection between the screw and the screw, if there is any looseness, tighten the screw in time. To clean the fire pump, soak a canvas or dry cloth and wipe slowly on the body or on surfaces made of grease or dust.

When the water supply doesn’t have enough pressure, a fire pump can be an excellent solution to the problem, as long as the pump is sized correctly. The fire pump is selected by five factors: liquid delivery volume, device lift, liquid properties, pipeline layout and operating conditions.

In the daily maintenance of the fire pump, we need to meet the following requirements: we need to ensure that the water inlet and outlet pipes, the various components of the controller, and the diesel engine system can work normally, and ensure that the power part is firmly connected to the water pump. We also need to check the opening status of the pump room, fire pump system, and various valves to ensure that the pump room has good heat dissipation conditions and that the components of the pump are in normal working condition.

The EDJ fire pump set is composed of a fire pump, a dual-shaft extension motor and a diesel engine. One end of the output shaft of the dual-shaft extension motor is connected to the input shaft of the fire pump, and the other end of the output shaft of the dual-shaft extension motor is connected to the input shaft of the fire pump. One end of a clutch is connected, and the other end of the clutch is connected with the output shaft of the diesel engine. The fire water pump, the double-shaft extension motor, the clutch and the diesel engine are all fixed on the base. The double-shaft extension motor, the clutch and the diesel engine are respectively electrically connected with a control circuit through the action driving circuit. With dual-power fire pump, there is no need to configure a second fire pump, reducing floor space and manufacturing costs.

If the person on duty in the fire control room cannot start and stop the fire pump manually after the fire occurs, it will delay the timing of emergency rescue and fire extinguishing. Today ZJBetter is here to explain how to switch the working status of the electrical control cabinet of the fire pump, manually start and stop the pump group on site and remotely, so that everyone can use the fire pump to extinguish the initial fire source or slow down the fire before the fire rescue comes.

A small leakage of the centrifugal fire pump will generally not cause an accident, but it will affect the supply efficiency of fire fighting water or foam. Therefore, the fire pump with packing seal should be used to strengthen the inspection of sealing packing;

If it is found that the seal is not tight, the packing should be replaced in time to prevent the fire pump from leaking during operation and affecting its performance.

The fire pump should be installed firmly, and its firmness should be checked regularly, especially the anchor bolts or backrest bolts, to prevent the fasteners from loosening;

Strengthen monitoring by monitoring the vibration waveform of the pump during operation, regularly check and repair the wear between the impeller and the sealing ring, and discover and eliminate hidden dangers in time; when the vibration of the pump is found to be abnormal after starting, it should be decisively analyzed for cavitation phenomenon, whether the impeller is balanced, whether the pump shaft and the motor shaft are concentric or whether the shaft has been deformed, and then take corresponding measures.

Correctly select the supporting motor that matches the performance parameters of the pump to prevent the motor from being too small and overloaded for a long time; before starting the pump, check whether the outlet valve is fully closed to prevent the motor from being burned due to excessive starting current; The technical parameters of the motor require maintenance, check the power supply voltage and the current of each phase, and ensure that the error is within the allowable range.

Centrifugal fire pumps need to be manually filled with liquid before starting to clear the air accumulated in the pump casing. When filling the pump, ensure that the bottom valve of the suction line is well closed; For fire pumps, it is necessary to ensure that the automatic filling pump system works normally; regularly check the tightness of the suction pipeline to prevent the air from being sucked in due to poor sealing, and to avoid air binding during the operation of the pump and affect the work.

The fire-fighting water provided by most fire-fighting water sources needs to be pressurized by fire-fighting water pumps to meet the requirements for water pressure and water volume during fire-fighting, which is an important part of fire-fighting. In daily use, we often encounter fire pumps vibrating or making abnormal noises. What is the problem?
1. The installation is not firm and the fasteners are loos

2. Wear between impeller and seal ring

3. Improper installation of pump body and pump shaft

4. Cavitation causes abnormal sound inside the pump

The vertical turbine pump occupies a small area, is easy to install, has a wide range of spectrum coverage, and has higher efficiency than other pumps. The applicable range is also very wide, such as steel, metallurgical industry, thermal power plant, hydropower station, petrochemical industry, rivers, lakes , Reservoirs, seaside water intake, fire fighting, etc.

The function of the diesel fire pump is very powerful. We can set the control time during use, and it can be automatically charged, automatically started, as well as automatic alarm and automatic preheating functions. It is very reliable to use.

Flow: 5-400L/s
Head: 3-20Bar
Material:
HT200, SS304, Bronze
Caliber:65-350mm
Pressure: 0.3~1.5MPa
Speed:740-2900r/min

The full name of diesel engine fire pump is engineering diesel engine fire pump set, which can be automatically charged, automatically started, and has the functions of automatic alarm and automatic preheating. The diesel engine fire pump is usually used as a backup facility, so it will only start automatically when the fire signal comes, and when the electric water pump fails or the power supply is cut off. When it has a device for starting the pump at ultra-low pressure, its matching electric water pump control cabinet should also have a device for starting the pump at ultra-low pressure, and the lower limit of the two pumps should have a certain pressure difference.

Fire pump package comprises a combination of electric motor driven pump, diesel engine driven and electric motor driven jockey pumps that supply for fire suppression systems.
Fire pump package is required to comply with Local Civil Defense Authority regulations and International Codes of Practice e.g. National Fire Protection Association (NFPA).

ED Fire pump system is made of Electric pump +Diesel pump
Operation: 1 Duty (electric) + 1 standby (diesel engine)
Capacity: 25, 30, 50, 100, 150, 200, 300, 400, 500, 750, 1000…GPM with pressure 4, 5, 6, 8, 10… Bar.
Pressure vessel 25, 50, 75, 100…liters, pressure will be 0.6mpa, 1.0mpa, 1.6mpa, select according to pump head.

1、Inspection function: the equipment can automatically or manually inspect the fire pump at regular intervals according to the cycle you set.

3、Protection and alarm function: when the fire fighting system has a motor power failure, over-current, short-circuit, etc., the inspection cabinet will automatically issue alarm and protection function, and issue sound and light alarm signal.

4, remote monitoring and control function: inspection cabinet can communicate with the fire control centre through the bus, to achieve the purpose of monitoring the operation of the system in the fire control centre.

5、Water test function with pressure: the inspection cabinet can carry out water test with pressure on the pipeline system according to the configuration of the fire protection pipeline.

6, mobile phone SMS alarm function: Shanghai Xizhiquan inspection cabinet can be configured according to the needs of users, choose to configure mobile phone alarm.

1, The pump packing pressure is too tight or too loose leakage
Treatment: adjust the tightness of the gland
2, multi-stage water seal ring position offset leakage
Treatment: adjust the position of the water seal ring so that the water seal ring is exactly aligned with the water seal pipe mouth.
3、The fire pump packing wears too much or the sleeve wears out and leaks water
Treatment: Replace the packing or shaft sleeve

1, The fire pump in the installation, the pump bolt slack leakage
Treatment: adjust the front position of the fire pump, slowly tighten the screws of the outer ring of the pump body one by one, do not tighten one screw at a time
2、The sealing surface is not flat, the liquid in the pump will flow out to the pump along the place where the seal is not tight
Treatment: provide vertical multi-stage fire pump model parameters to replace the mechanical seal
3, Mechanical seal amplitude hair wear serious, seepage and water leakage occurred
Treatment: adjust the friction position of the seal ring, take out the seal ring, and then exchange the orientation equipment, such as the seal ring on the fastening spring loss of elasticity or cracking, can remove the spring, with the appropriate diameter of steel wire or wire tied
4、The fire pump body has sand holes or rupture
Treatment: Replace the pump body of the fire pump

What kind of terrain to choose what kind of water pump

This problem, in short, is the selection of water pumps. The following are the applicable way for you to choose water pumps from zjbetter. I hope they can help you choose water pumps and help you better. Choose the water pump that suits your design.
1. Confirm the use terrain
First understand the terrain in which the outfit is used, including temperature, moisture, air pressure, air cattiness, dustproof and leakproof conditions, and the position of dangerous areas.
2. Confirm operating conditions
Refers to the liquid face pressure( absolute) on the suction side of the liquid, the liquid face pressure on the discharge side, intermittent or nonstop work, fixed or mobile position, and the convenience of installation and conservation.
3. Confirm the nature of the medium
Medium temperature, viscosity, density, impregnated vapor pressure, solid flyspeck periphery and content, gas content, cattiness, volatility, trap, toxin.
4. elect the material of the pump bathe corridor
According to the physical and chemical parcels of the pumped medium above, the material of the inflow- passing corridor is determined.
5. Determine performance parameters
The performance parameters of the water pump can be determined by computation, analogy, test and other styles.
6. Determine the installation type
The installation of the channel is determined by the layout of the channel and the installation point, and there are direct connection, perpendicular and other types.
8. Determine the number of pumps
In general, spare pumps, especially fire pumps, are set up, and the number of pumps is named according to different situations.

There are numerous ways to maintain fire pumps and water pumps. The following styles are more effective. You can use them for reference
System 1 The installation of the pump set should be accurate and dependable, and there should be no egregious vibration duringoperation.However, or the bearing is hot to the touch( the temperature is advanced than 60 °C) and the water seepage in the seal of the pump shaft is further than 60 drops per nanosecond, the cause must be set up out and the fault should be excluded in time, If the pump makes abnormal noise when pumping water.
the
system 2 Screws that are squinched daily, similar as packing gland screws, irrigation entrapments,etc., should be disassembled with a suitable wrench and a reasonable necklace. You can put some slicking oil painting on it or wipe it regularly with an oil painting cloth to help rust; if the water drain screw isn’t used constantly, it’s easy to rust, so after buying a new water pump, you should first wind the water drain draw, and apply some machine oil painting and white lead oil painting on the screw thread, Change the new oil painting two or three times a time in the future.
the
System 3 If the pump is waxed with machine oil painting, the slicking oil painting should be replaced once a month; if it’s waxed with adulation, it should be replaced every six months. It should be noted that the water pump uses calcium- grounded grease, and the motor uses sodium- grounded grease, and they shouldn’t be used inaptly. Because sodium- grounded grease is hydrophilic, it’ll emulsify into froth and dissipate when it encounters water on the pump, while calcium- grounded grease is hysterical of high temperature, so it’s easy to melt when the temperature rises when used on a motor.

system 4 Don’t pump water with too important beach, so as to avoid unseasonable wear and tear of the impeller, mouth ring and shaft, and try to help water deficit operation. Running without water will damage the water seal, and the water pump is prone to water leakage or indeed no water.
System 5 After the irrigation and drainage season is over, the water pump should be precisely gutted and auditedimmediately.However, they should be repaired or replaced in time, and the corridor that should be waxed should be filled with suitable oil painting; Stylish stored in a dry place, If any damaged or misshaped corridor are set up to be unworkable.

The diesel engine fire pump has the characteristics of good startability, strong overload capacity, compact structure, convenient maintenance, simple use, and high degree of automation. It is a fire-fighting equipment with reliable performance. It can completely meet the fire water supply in various occasions of warehouses, docks, airports, petrochemicals, power plants, liquefied gas stations, textiles and other industrial and mining enterprises.

ED Fire pump system is made of Electric pump +Diesel pump
Operation: 1 Duty (electric) + 1 standby (diesel engine)
Capacity: 25, 30, 50, 100, 150, 200, 300, 400, 500, 750, 1000…GPM with pressure 4, 5, 6, 8, 10… Bar.
Pressure vessel 25, 50, 75, 100…liters, pressure will be 0.6mpa, 1.0mpa, 1.6mpa, select according to pump head.