urgent: Some questions about magnetic pumps
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This post was last edited by llssyy on 2011-12-15 16:28. May I ask everyone?* * ： 1. The relationship between the shaft power of the magnetic pump and its torque (calculation formula) 2. What impact does the magnetic pump's orifice ring have on other parameters such as flow rate and head? 3. How should the coupling of the magnetic pump be selected? According to what principles, is it better to use an elastic block or a diaphragm type? 4. Is it necessary to calculate the strength of the magnetic pump shaft? If so, how is it calculated? That’s all for now, I hope you all * * With help, it is best to give some magnetic pump manufacturers how to determine the pump parameters. :lol
Why is no one replying? Please help me, I need it urgently
1. The calculation formula is generally kept confidential by manufacturers. 2. The mouth ring has no impact, and is mainly used to prevent wear of the magnetic pump impeller. The impact is on the inducer 3. The coupling needs to be aligned on site, which is troublesome. If it is within 30KW, it is recommended to use a flange direct connection. The motor shaft is connected to the external magnetic steel elastic pin 4. The shaft is stationary, so only the dynamic load can be calculated.
Upstairs, I would like to ask, how is the torque of the magnet calculated?
I suggest you buy a copy of Zhao Kezhong's Magnetic Drive Technology and Equipment, which has more detailed instructions.
Magnetic drive technology and equipment----Compiled by Zhao Kezhong may be helpful to you http://bbs.hcbbs.com/viewthread.php?tid=247378&page=1 Go download it
Good stuff, but it’s a pity that I don’t have any wealth anymore, I’m so depressed :(
Magnetic pump ------ idling, dry pumping, it is recommended to install a pump anti-idling protector, which will automatically stop within 2 seconds when idling, to protect the pump from damage Electronic sample address: http://www.dnpump.com/PicUp/200910162202501.pdf If you want less maintenance, choose the matching anti-aircraft dry-rotation protector to save trouble!
Please ask everyone* * ： 1. The relationship between the shaft power of the magnetic pump and its torque (calculation formula) 2. What impact does the magnetic pump's orifice ring have on other parameters such as flow rate and head? 3. How should the coupling of the magnetic pump be selected? According to what principles, is it better to use an elastic block or a diaphragm type? 4. Is it necessary to calculate the strength of the magnetic pump shaft? If so, how is it calculated? That’s all for now, I hope you all * * With help, it is best to give some magnetic pump manufacturers how to determine the pump parameters. answer: 1. Motor torque Calculate the "torque" of the motor, the unit is N·m (Nm), the calculation formula is T=9549 * p/n. P is the rated (output) power of the motor. The unit is kilowatts (KW). The denominator is the rated speed n and the unit is revolutions per minute (r/min). P and n can be found directly from the motor nameplate. Pump shaft power N=QρH/102 There is a coefficient of 1.05-1.15 between motor power and pump shaft power. 2. The gap between the mouth ring of the magnetic pump increases, the flow rate decreases, and the measuring range decreases. 3. The selection of coupling, the pin cost is low, but it is not suitable for use in places with high power. It is easy to be damaged. The elastic diaphragm is high cost and has a long life, so it is suitable for high power occasions.
1. The calculation formula is generally kept confidential by manufacturers. 2. The mouth ring has no impact, and is mainly used to prevent wear of the magnetic pump impeller. The impact is on the inducer 3. The coupling needs to be aligned on site, which is troublesome. If it is within 30KW, it is recommended to use a flange direct connection. The motor shaft is connected to the external magnetic steel elastic pin 4. The shaft is stationary, so only the dynamic load can be calculated.