The Selection of Fire Pump

The water that is used for firefighting always needs to be pressurized by fire pump so as to reach the requirement of pressure. And the defects of fire pump set probably cause a great loss that could have been avoided. The function of fire pump should superior than the water in life and production, so it is important to choose a qualified fire pump for firefighting.

The United States stipulates that the maximum flow of fire fighting pump should be 150% of designing flow; the minimum head is 65% of the head of selected work-yard. When the fire pump is closed, the maximum head is 140% of the head of selected work-yard, the pump flow is 1-2L/S, the head is 1.1-1.2 times on the head of fire pump. And a flow meter should be installed on the outlet pipe of fire pump, its range should reach 175% of selected pump flow. A pressure gauge which is up to 89mm in diameter should also be fixed on the outlet pipe. All these parameters can be used as references for designers and purchasers.
The function of pump regulator in supply system is to maintain the normal pressure of fire pump. The pressure of pump regulator can be determined by the pressure of the system, its pressure should normally 0.1Mpa-0.2Mpa higher than the main pump, or 1.1-1.2 times of the main pump. As to the flow of pump regulator, the NFPA20 (1996 Edition) set that the flow of Pressure Maintenan Pumps/Jockey Pumps/Make Up Pumps is not less than the amount of leakage of the system under normal conditions. And the pressure of pump regulator should be sufficient to maintain the system pressure.
According to a survey that the flow of pump regulator is always between 0.5L/S to 2.0L/S in many countries, the water hammer may exist when the pump is closed without pressure tank in the system. The flow of pump regulator is recommended within 1.0L/S-2.0L/S, the pressure of it should be 0.1Mpa-0.2Mpa higher than the main pump, or 1.1-1.2 times of the main pump. And a pressure tank should be installed in system, if not, the controller of pump regulator should be paid more attention to avoid the pump regulator starting frequently because of the effect of water hammer. Only in this way can a fire pump system work normally. And these standards can also be applied to electric fire pump.
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How to Choose the Best Fire Pump in the Fire Ptotection System

In our daily life,a street motorcycle pump is an ordinary device when we are riding a bicycle or motorcycle. As we need to pump air into our tires when we have flat tyres.But when you meet a fire dizaster,the fire pump is also a essential equipment.It works similiarly to the street motorcycle pump.The only difference is fire pump which is used to  pump water or foam into the burning places.Of course,the fire fighting pump is crucial to the design of fire control system whose heart is made of  water or foam,providing power for fire fighting medium.The fire pump has its own characteristics.It requires intermittent duty,high reliability and wide operating range.We can choose different ways of driving to the same parameters of the pump.So when we design the whole system,we should compare and choose rather carefully.It is centrifugal pump whioh is widely used in the fire control design.It main includes:the opportune pump,S(SH)pump,DL pump,D pump and XB pump.Now many manufacturers have introduced a variety of special pump for fire protection.In addition to the using places of individual large flow and high head,we can always choose the suitable parameters pump in aboveall models,with the protection reference of Model GDL in gereral fire design.Model GDL owns the advantage of occupying small area,adjusting in and out of the watergate direction,covering wide water pump parameters.Especially in commerce-residence building fire control design,for the purpose of saving land,basically adopts DL pump group.Then I shall deal you a perfect hand for choosing the right pump,combining with the various aspects of working place,driving mode and cost,etc.

A fire pump is a part of a fire sprinkler*s water supply and can be powered by electric,diesel or steam.It*s a big investment for us to design a fire-fighting pump system.It costs us a lot to get an optimum fire pump.

1.Read the manual first.
Try to read the manual carefully and get to know the pump is suitable to be used.As it*s always used at the time when we facing danger,we must operate it properly.

2.Make a shedule for checking.
After a period of time,we should check every part of the whole system.Besides,we should especially check the fire pump set,as it consists of group of fire pump,power source,control cabinet and auxiliary device.You must check one by one.

3.Solve the problem right away.
When you find the device or components a little unusual,if you can solve it,do it right now.If you can*t,don*t put it off till tomorrow,ask somebody who can solve to do it.

4.Seek help from Internet.
Chat with someone who is using the same pump.Remember your are not the only one who used the fire pump.You can share the experience with other friends.

5.Keep in touch with the after sale service department.
Remember this department*s telephone number.If you meet any difficulties or troubles while you are using the pump,call them right away.They can provide professional services.

It is the most dangerous place at the fire-buring place.We should not start to dig a well when we become parched with thirst.Hope you can find the pump with great satisfaction.
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The maintenance of diesel powered fire pump

The biggest difference between diesel powered fire pump and electric water pump is that they have their independent power supply system - storage battery, so it can start and operate normally without the support of electric supply. Diesel fire pump is usually used as standby facility. It will start automatically only when the fire signals appear, and a failure occurs at electric water pumps or the power goes off.

The maintenance of diesel fire pumps is the most simple and the most economical, so extending service life and reducing use cost become very important. The daily maintenance can keep the following steps:
1. Check the fuel quantity of fuel tank, and fill up it if needed.
2. Check the oil level of the oil sump, and it belows the scale line, refuel to the specified amount, but it should not exceed the upper limit.
3. Check the oil level of the fuel injection pump speed controller, and you should refuel if it doesn't reach the specified degree line.
4. Check if there is enough lubricating grease in the oil filling nozzle of the water pumps. Take the oiling nozzle off the diesel circulating water pump and observe if there is enougn lubricating grease inside. If no, infuse it with abundant lubricating grease.
5. Check if there is enough water inside the water tank, and replenish the water if needed. It is suggested to use clean water such as tap water or clean river water. If use the ground water directly, it will generate scale incrustation inside the water tank, which will influence the cooling effect and cause failure. So ground water can be used only if being softened.
Although diesel fire pump is highly automated, some human factors may make it fail to work. So in order to ensure the reliability of the entire control system, the organized daily maintenance is necessary.
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