Stainless steel vertical centrifugal pump
Centrifugal pump, I believe we will not unfamiliar, and in this site for everyone to explain the relevant knowledge of centrifugal pumps, and today to explain the contents of this article is also a certain relationship with the centrifugal pump, the following will be stainless steel vertical Centrifugal pump knowledge for everyone to do a brief description of the hope that we can learn the knowledge of this chapter.
Stainless steel vertical centrifugal pump selected the main control parameters for the pump flow Q, head H, efficiency η, power, speed n, working pressure, the necessary NPSH (NPSH) and so on.
Structural Characteristics of Stainless Steel Vertical Centrifugal Pump
1, single-stage stainless steel vertical centrifugal pump for the vertical structure, import and export of the same caliber, and located in the same center line, the same as the valve can be installed in the pipeline, compact and beautiful appearance, small footprint, low building investment.
2, impeller mounted directly on the motor shaft, the axial size is short, compact, pump and motor bearing configuration is reasonable, can effectively smooth the pump operation of the radial and axial load, thus ensuring a smooth pump operation, Vibration is not, low noise.
3, the shaft seal mechanical seal or mechanical seal combination, the use of imported titanium alloy seal ring, medium-sized high-temperature mechanical seal and the use of carbide material, wear seal, can effectively extend the mechanical seal life.
4, easy installation and maintenance, without disassembly piping system.
Stainless steel vertical centrifugal pump works
The mechanical energy of the prime mover is transmitted to the liquid by the action of the rotating impeller on the liquid. As the role of centrifugal pump from the impeller inlet flow to the exit process, the speed and pressure energy can be increased by the impeller discharge of liquid through the pressure out of the room, most of the speed can be converted into pressure energy, and then along the discharge pipeline Out, at this time, the impeller at the entrance due to the discharge of liquid to form a vacuum or low pressure, the liquid in the suction tank in the liquid pressure / atmospheric pressure, was pressed into the impeller inlet, then, rotating impeller on continuously Inhalation and discharge of liquid.
Introduction of Stainless Steel Vertical Centrifugal Pump
Stainless steel vertical centrifugal pump
Selection of Stainless Steel Vertical Centrifugal Pump
Reasonable selection of pumps, need to consider the pump unit, pumping station investment and operating costs and other comprehensive technical and economic indicators, so that in line with economic, security, the principle of application. Specifically include the following aspects:
1), should choose high efficiency, low noise, energy-saving pumps, is strictly prohibited to choose out of the product.
2), should be based on the design flow, the required lift pump selection, and consider the pump due to wear and tear and other reasons resulting in decreased pump output can be calculated by the lift H multiplied by 1.05 ~ 1.10 coefficient after the election pump; should select the characteristic curve with the flow Large pump head down gradually, so that the pump work is stable, reliable work in parallel; and pump operating point should be maintained in the efficient range of operation, so that both energy-saving and difficult to damage parts.
3), when the water supply pipe network without regulatory facilities, should adopt the speed pump or rated speed pump group running water supply. Pump the maximum amount of water should not be less than the district water supply design flow, and fire conditions should be checked.
When a single pump can meet the requirements, it is not appropriate to adopt more than one parallel; if it is necessary to use more than one parallel operation or the size of the pump to match the number of pumps to reduce the number of pumps should be used as much as possible; Mode, the model, the number of units should not be too much, generally not more than two models, the pump should be close to the range of head; parallel operation of each pump should still run within the efficient area.
5), frequency control pump (group) design of water flow should be guaranteed to meet the life of the water supply system in the design of the maximum flow requirements. (QH curve) and should not be selected in the QH curve of the extension line, the design of the most unfavorable operating point should be selected (double power supply or dual circuit power supply); pump operating point should be selected in the pump characteristic curve (QH curve) At the right end of the high efficiency section of the pump characteristic curve, the point where the maximum water outflow from the pump is high and the head is low but satisfies the requirement is the intersection of the low point of the pump efficiency curve and the pipe characteristic curve. Pump speed range of work as far as possible in the pump efficiency section; speed range should be located in the pump water supply between 25% to 100%; equipment should have automatic control of water level.
6), life pressurized water supply pump unit should be set to spare pump, standby pump water supply capacity should be greater than the maximum running water pump capacity, the pump should automatically switch, run alternately.
7), the pump with the motor voltage should be the same, and the power supply system should be the same as the national grid power supply standard.
The use of stainless steel vertical centrifugal pump
Vertical pipe centrifugal pump, for conveying water and physical and chemical properties similar to the water of the base liquid used for industrial and urban water supply and drainage, high-rise building pressurized water, garden irrigation, fire pressurization, long-distance transmission, HVAC Refrigeration cycle.
Bathroom and other cold water cycle pressurization and equipment support, the use of temperature T is less than 80 degrees Celsius.
Summary, this chapter describes the stainless steel vertical centrifugal pump, and analysis of the structural characteristics of stainless steel vertical centrifugal pump, stainless steel vertical centrifugal pump works, stainless steel vertical centrifugal pump selection points and the use of stainless steel vertical centrifugal pump knowledge , I hope this will give you a larger reference value, the work will help!
Centrifugal pump, I believe we will not unfamiliar, and in this site for everyone to explain the relevant knowledge of centrifugal pumps, and today to explain the contents of this article is also a certain relationship with the centrifugal pump, the following will be stainless steel vertical Centrifugal pump knowledge for everyone to do a brief description of the hope that we can learn the knowledge of this chapter.
Stainless steel vertical centrifugal pump selected the main control parameters for the pump flow Q, head H, efficiency η, power, speed n, working pressure, the necessary NPSH (NPSH) and so on.
Structural Characteristics of Stainless Steel Vertical Centrifugal Pump
1, single-stage stainless steel vertical centrifugal pump for the vertical structure, import and export of the same caliber, and located in the same center line, the same as the valve can be installed in the pipeline, compact and beautiful appearance, small footprint, low building investment.
2, impeller mounted directly on the motor shaft, the axial size is short, compact, pump and motor bearing configuration is reasonable, can effectively smooth the pump operation of the radial and axial load, thus ensuring a smooth pump operation, Vibration is not, low noise.
3, the shaft seal mechanical seal or mechanical seal combination, the use of imported titanium alloy seal ring, medium-sized high-temperature mechanical seal and the use of carbide material, wear seal, can effectively extend the mechanical seal life.
4, easy installation and maintenance, without disassembly piping system.
Stainless steel vertical centrifugal pump works
The mechanical energy of the prime mover is transmitted to the liquid by the action of the rotating impeller on the liquid. As the role of centrifugal pump from the impeller inlet flow to the exit process, the speed and pressure energy can be increased by the impeller discharge of liquid through the pressure out of the room, most of the speed can be converted into pressure energy, and then along the discharge pipeline Out, at this time, the impeller at the entrance due to the discharge of liquid to form a vacuum or low pressure, the liquid in the suction tank in the liquid pressure / atmospheric pressure, was pressed into the impeller inlet, then, rotating impeller on continuously Inhalation and discharge of liquid.
Introduction of Stainless Steel Vertical Centrifugal Pump
Stainless steel vertical centrifugal pump
Selection of Stainless Steel Vertical Centrifugal Pump
Reasonable selection of pumps, need to consider the pump unit, pumping station investment and operating costs and other comprehensive technical and economic indicators, so that in line with economic, security, the principle of application. Specifically include the following aspects:
1), should choose high efficiency, low noise, energy-saving pumps, is strictly prohibited to choose out of the product.
2), should be based on the design flow, the required lift pump selection, and consider the pump due to wear and tear and other reasons resulting in decreased pump output can be calculated by the lift H multiplied by 1.05 ~ 1.10 coefficient after the election pump; should select the characteristic curve with the flow Large pump head down gradually, so that the pump work is stable, reliable work in parallel; and pump operating point should be maintained in the efficient range of operation, so that both energy-saving and difficult to damage parts.
3), when the water supply pipe network without regulatory facilities, should adopt the speed pump or rated speed pump group running water supply. Pump the maximum amount of water should not be less than the district water supply design flow, and fire conditions should be checked.
When a single pump can meet the requirements, it is not appropriate to adopt more than one parallel; if it is necessary to use more than one parallel operation or the size of the pump to match the number of pumps to reduce the number of pumps should be used as much as possible; Mode, the model, the number of units should not be too much, generally not more than two models, the pump should be close to the range of head; parallel operation of each pump should still run within the efficient area.
5), frequency control pump (group) design of water flow should be guaranteed to meet the life of the water supply system in the design of the maximum flow requirements. (QH curve) and should not be selected in the QH curve of the extension line, the design of the most unfavorable operating point should be selected (double power supply or dual circuit power supply); pump operating point should be selected in the pump characteristic curve (QH curve) At the right end of the high efficiency section of the pump characteristic curve, the point where the maximum water outflow from the pump is high and the head is low but satisfies the requirement is the intersection of the low point of the pump efficiency curve and the pipe characteristic curve. Pump speed range of work as far as possible in the pump efficiency section; speed range should be located in the pump water supply between 25% to 100%; equipment should have automatic control of water level.
6), life pressurized water supply pump unit should be set to spare pump, standby pump water supply capacity should be greater than the maximum running water pump capacity, the pump should automatically switch, run alternately.
7), the pump with the motor voltage should be the same, and the power supply system should be the same as the national grid power supply standard.
The use of stainless steel vertical centrifugal pump
Vertical pipe centrifugal pump, for conveying water and physical and chemical properties similar to the water of the base liquid used for industrial and urban water supply and drainage, high-rise building pressurized water, garden irrigation, fire pressurization, long-distance transmission, HVAC Refrigeration cycle.
Bathroom and other cold water cycle pressurization and equipment support, the use of temperature T is less than 80 degrees Celsius.
Summary, this chapter describes the stainless steel vertical centrifugal pump, and analysis of the structural characteristics of stainless steel vertical centrifugal pump, stainless steel vertical centrifugal pump works, stainless steel vertical centrifugal pump selection points and the use of stainless steel vertical centrifugal pump knowledge , I hope this will give you a larger reference value, the work will help!
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Stainless steel vertical centrifugal pump, related knowledge, structural feature
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