Booster pump relatively speaking, the flow and the transmission medium are not too high, so the choice of booster pump is mainly to consider the appropriate flow and head, booster pump selection based on the main process is based on water supply and drainage Requirements, from five aspects to consider, both the liquid delivery capacity, device head, liquid properties, pipeline layout and operating conditions.
First, the list of basic data:
1, the media properties: media name, specific gravity, viscosity, corrosion, toxicity and so on.
2, the medium contained in the solid particle diameter, content.
3, the medium temperature: (℃)
4, the required flow
General industrial pumps in the process can ignore the leakage in the pipeline system, but must take into account the process of change in the flow of the impact. Agricultural pumps If the use of open channel water, but also must consider the leakage and evaporation.
5, the pressure: suction tank pressure, drainage tank pressure, pipe system, the pressure difference (head loss).
6, pipe system data (diameter, length, pipe attachment type and number of suction pool to the pressure tank geometric elevation, etc.).
Selection knowledge of booster pump
The device characteristic curve should also be made if required.
In the design layout pipeline, should note the following:
A, reasonable choice of pipe diameter, pipe diameter, at the same flow rate, the flow velocity is small, the resistance loss is small, but the price is high, the pipe diameter is small, will lead to a sharp increase in resistance loss, the selected pump head increase, With the increase in power, costs and operating costs have increased. So should be considered from the technical and economic point of view.
B, the exhaust pipe and its joints should consider the maximum pressure can withstand.
C, pipe layout should be arranged as straight as possible to minimize the pipe fittings and to minimize the length of the pipe must be turned when the bending radius of the elbow pipe diameter should be 3 to 5 times the angle as much as 90 Lt; 0 & gt; C.
D, the pump must be installed on the discharge side of the valve (ball valve or globe valve, etc.) and check valve. The valve is used to adjust the operating point of the pump. The check valve prevents the pump from reversing when the liquid is backflow and prevents the pump from hitting the water hammer. (When the liquid backflow, it will have a huge reverse pressure, damage to the pump)
Second, determine the flow head
Determination of flow
A, if the production process has been given the minimum, normal, maximum flow, the maximum flow should be considered.
B, if the production process only gives the normal flow, should consider leaving a certain margin.
For the large flow low head pump with ns> 100, the flow margin is 5%. For the small flow high head pump with ns <50, the flow margin is 10% and 50≤ns≤100. %, Poor quality and poor operating conditions of the pump, the flow margin should be taken 10%.
C, if the basic data only to the weight flow, should be converted into volumetric flow.
First, the list of basic data:
1, the media properties: media name, specific gravity, viscosity, corrosion, toxicity and so on.
2, the medium contained in the solid particle diameter, content.
3, the medium temperature: (℃)
4, the required flow
General industrial pumps in the process can ignore the leakage in the pipeline system, but must take into account the process of change in the flow of the impact. Agricultural pumps If the use of open channel water, but also must consider the leakage and evaporation.
5, the pressure: suction tank pressure, drainage tank pressure, pipe system, the pressure difference (head loss).
6, pipe system data (diameter, length, pipe attachment type and number of suction pool to the pressure tank geometric elevation, etc.).
Selection knowledge of booster pump
The device characteristic curve should also be made if required.
In the design layout pipeline, should note the following:
A, reasonable choice of pipe diameter, pipe diameter, at the same flow rate, the flow velocity is small, the resistance loss is small, but the price is high, the pipe diameter is small, will lead to a sharp increase in resistance loss, the selected pump head increase, With the increase in power, costs and operating costs have increased. So should be considered from the technical and economic point of view.
B, the exhaust pipe and its joints should consider the maximum pressure can withstand.
C, pipe layout should be arranged as straight as possible to minimize the pipe fittings and to minimize the length of the pipe must be turned when the bending radius of the elbow pipe diameter should be 3 to 5 times the angle as much as 90 Lt; 0 & gt; C.
D, the pump must be installed on the discharge side of the valve (ball valve or globe valve, etc.) and check valve. The valve is used to adjust the operating point of the pump. The check valve prevents the pump from reversing when the liquid is backflow and prevents the pump from hitting the water hammer. (When the liquid backflow, it will have a huge reverse pressure, damage to the pump)
Second, determine the flow head
Determination of flow
A, if the production process has been given the minimum, normal, maximum flow, the maximum flow should be considered.
B, if the production process only gives the normal flow, should consider leaving a certain margin.
For the large flow low head pump with ns> 100, the flow margin is 5%. For the small flow high head pump with ns <50, the flow margin is 10% and 50≤ns≤100. %, Poor quality and poor operating conditions of the pump, the flow margin should be taken 10%.
C, if the basic data only to the weight flow, should be converted into volumetric flow.
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Booster pump, selection of knowledge, flow and head
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