Introduction to classification information of the

2022-08-12
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Introduction to classification information of electromagnetic pump

electromagnetic pump has no mechanical moving parts, simple structure, good sealing, reliable operation, and does not need shaft sealing. Therefore, it is used to transport some toxic heavy metals, such as mercury and lead, in the chemical and printing industries, in the nuclear power plant to transport liquid metals (sodium or potassium, sodium potassium alloys) as heat carriers, and also in the casting production to transport molten non-ferrous metals. The flow rate can reach 13000 m3/h, the pressure can reach 1.7 MPa, and the temperature can reach 1200 ℃

electromagnetic pump can be divided into AC pump and DC pump according to the form of power supply

according to the way of current feeding in liquid metal, it can be divided into conductive (conductive) electromagnetic pump and inductive electromagnetic pump. Direct current or alternating current is used for conductive electromagnetic pump. It has a tube made of non-magnetic refractory metal (see Figure), surrounded by magnets, and the magnetic line of force is perpendicular to the tube. When a current perpendicular to the tube and the magnetic line of force is applied, according to the left-hand rule, a mechanical force is generated to press the conductive fluid out of the tube. The conductivity type is generally a small pump, which is used for low pressure and small flow. In the conduction electromagnetic pump, the current is directly transmitted to the liquid state by the external power supply through the electrodes on both sides of the pump ditch. The ban on grade B1 thermal insulation materials was canceled. In the induction pump, the induction type uses multiple intersecting currents. Current is induced by alternating magnetic field. The latest induction electromagnetic pump is a linear induction pump, which is equipped with a flat, linear stator winding. The induction force is axial and the size is large. Large flow pumps belong to this type

according to different structures, it can be divided into plane pump and cylindrical pump

a device that uses the interaction of magnetic field and current in conductive fluid to make the fluid generate pressure gradient under the action of electromagnetic force, so as to promote the movement of fluid. In practice, it is mostly used to pump liquid metal, so it is also called liquid metal electromagnetic pump. The comprehensive mechanical performance of the electromagnetic pump has been significantly improved; General plastic processing equipment can be used to form products with different sections. The source forms can be divided into AC pump and DC pump; According to the way of current feeding in liquid metal, it can be divided into conductive electromagnetic pump and inductive electromagnetic pump; According to different structures, it can be divided into plane pump and cylindrical pump. In the conduction pump, the current is directly transmitted to the liquid metal by the external power supply through the electrodes on both sides of the pump ditch; In the induction pump, current is induced by alternating magnetic field. The electromagnetic pump has no rotating parts, simple structure, good sealing and reliable operation, so it is used to transport some toxic heavy metals, such as mercury, lead, etc. in the chemical and printing industries; In atomic energy and passenger car enterprises are also willing to pay a brand premium for high-quality batteries. In the power industry, it is used to transport metals with particularly active chemical properties, such as sodium, potassium, sodium potassium alloys; It can be used as a quantitative pump for active metals such as aluminum and magnesium in foundry enterprises, but now it is mainly used by large enterprises such as military industry. The disadvantage of electromagnetic pump is low efficiency,

the disadvantage of electromagnetic pump is low efficiency, which has not been widely used in smelting and casting industries

the electromagnetic pump is similar to the ordinary solenoid valve. It takes AC as the fixture on the experimental machine, which should be able to align into a line immediately. The current forms an alternating fixed magnetic field through the electromagnetic winding, interacts with the movable pump body, drives the pump body to vibrate, and promotes the liquid output

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