SU898575A1

SU898575A1 - Electromagnetic induction pump

Info

Publication number: SU898575A1
Application number: SU762333269A
Authority: SU
Inventors: Юрий Федорович Меренков; Игорь Васильевич Попоков
Original assignee: Отдел физико-технических проблем энергетики Уральского научного центра АН СССР
Priority date: 1976-03-10
Filing date: 1976-03-10
Publication date: 1982-01-15

Description

Изобретение относится к электромагнитным насосам переменного тока для жидких токопроводящих сред и может быть применено для перекачивания жидких металлов в особенности под высокими давлениями.The invention relates to electromagnetic pumps for alternating current for liquid conductive media and can be used for pumping liquid metals in particular at high pressures.

Известен электромагнитный индукцион- ⁵ный насос с винтовым каналом, работающий на основе силового воздействия вращающегося магнитного поля, созданного распределенной по пазам трехфазной обмоткой возбуждения, на перекачиваемую среду [1].Known electromagnetic induction ⁵ The pump is a helical channel running through force influence of the rotating magnetic field generated by the distributed three-phase excitation winding grooves, on the pumped medium [1].

Недостатками насоса являются сложность конструкции из-за наличия зубчатого Индуктора и -неудовлетворительные удельные массовые и энергетические показатели.The disadvantages of the pump are the design complexity due to the presence of a gear inductor and unsatisfactory specific mass and energy indicators.

Наиболее близким к предлагаемому по ,5 технической сущности и достигаемому результату является индукционный насос, содержащий магнитопровод с однофазной обмоткой возбуждения и канал с шиной, состоящей из продольных боковых частей и короткозамыкающей части на выходном 20 конце канала. Работа насоса основана на взаимодействии переменного магнитного поля с током, наведенным в перекачиваемой среде этим полем и замыкающимся по электропроводящей шине [2].Closest to the proposed technical essence, 5 and the achieved result is an induction pump containing a magnetic circuit with a single-phase field winding and a channel with a bus consisting of longitudinal side parts and a short-circuit part at the output 20 end of the channel. The operation of the pump is based on the interaction of an alternating magnetic field with the current induced in the pumped medium by this field and closed via an electrically conductive bus [2].

Недостатко.м его являются повышенные электрические потери мощности в шине, которые приводят к снижению КПД насоса.Its disadvantage is increased electrical power loss in the bus, which leads to a decrease in pump efficiency.

Цель изобретения — повышение КПД насоса за счет снижения электрических потерь мощности в продольных частях шины.The purpose of the invention is to increase the efficiency of the pump by reducing electrical power losses in the longitudinal parts of the tire.

Указанная цель достигается тем, что насос содержит, по крайней мере, два параллельно расположенных в магнитном поле канала, соединенных между собой продольными частями шины, а короткозамыкающие части шин соседних каналов установлены по разные стороны магнитопровода. Рядом расположенные каналы гидравлически соединены друг с другом с одной стороны магнитопровода так, что образуется последовательное, соединение каналов.This goal is achieved by the fact that the pump contains at least two channels located parallel to each other in the magnetic field, interconnected by the longitudinal parts of the bus, and short-circuit parts of the tires of adjacent channels are installed on opposite sides of the magnetic circuit. The adjacent channels are hydraulically connected to each other on one side of the magnetic circuit so that a sequential connection of the channels is formed.

На фиг. 1 изображен насос с тремя каналами; поперечный разрез; на фиг. 2 — то же, продольный разрез.In FIG. 1 shows a pump with three channels; cross section; in FIG. 2 - the same, longitudinal section.

Насос содержит магнитопровод, состоящий из полюсных сердечников 1 и ярма 2.The pump contains a magnetic circuit, consisting of pole cores 1 and yoke 2.

Однофазная обмотка 3 расположена на полюсных сердечниках. Проводящая сре3 да прокачивается по трем параллельным каналам 4, 5 и 6, расположенным в зазоре между полюсными сердечниками. К боковым стенкам каналов на длине полюсных сердечников присоединены продольные части 7 шины таким образом, что для двух 5 соседних каналов они являются общими. Короткозамыкающие части 8 шины соседних каналов установлены по разные стороны полюсного сердечника 1. Рядом расположенные каналы соединены друг с другом с одной стороны полюсных сердечников с ^,0помощью соединительных патрубков 9 так, что образуется последовательное соединение каналов.Single-phase winding 3 is located on the pole cores. The conductive medium is pumped through three parallel channels 4, 5, and 6 located in the gap between the pole cores. To the side walls of the channels along the length of the pole cores are connected the longitudinal parts 7 of the bus so that for two 5 adjacent channels they are common. Short-circuiting parts 8 of the bus of adjacent channels are installed on opposite sides of the pole core 1. The adjacent channels are connected to each other on one side of the pole cores ^{, 0} by means of connecting pipes 9 so that a series connection of the channels is formed.

Насос работает следующим образом.The pump operates as follows.

При подключении обмотки 3 к однофаз- ₁₅ной сети переменного тока в зазоре между полюсными сердечниками наводится знакопеременное магнитное поле. При взаимодействии этого поля с наведенными в проводящей среде токами, замыкающимися по продольным, и короткозамыкающимися ²⁰частями шины, в каждом из каналов создаются усилия, направленные в сторону короткозамыкающих частей шины.When connected to a single-phase winding 3 ₁₅ hydrochloric AC in the gap between pole core induces an alternating magnetic field. When this field interacts with currents induced in the conductive medium, closing along the longitudinal, and short-circuited ²⁰ bus parts, forces are created in each channel directed towards the short-circuit bus parts.

Наличие у рядом расположенных каналов общей продольной части шины приво- ₂₅дит к тому, что наведенные в ней ЭДС от поля соседних каналов направлены встречно. Это позволяет значительно снизить относительные потери мощности от токов в замыкающей шине, что приводит к росту КПД насоса. Например, при трехканальном зо исполнении насоса потери мощности в шине снижаются в 2 раза, кроме того, улучшаются удельные габаритно-массовые показатели насоса.The presence of adjacent channel common longitudinal portion of the tire ₂₅ privo- dit to that induced therein by the EMF field adjacent channels directed oppositely. This can significantly reduce the relative power loss from currents in the closing bus, which leads to an increase in the efficiency of the pump. For example, with a three-channel pump design, power losses in the tire are reduced by 2 times, in addition, the specific overall and mass characteristics of the pump are improved.

Claims

(54) ELECTROMAGNETIC INDUCTION PUMP The invention relates to electromagnetic pumps for alternating current for conductive liquids and can be used for pumping liquid metals, especially under high pressures. A screw-channel electromagnetic induction pump is known that operates on the basis of the force effect of a rotating magnetic field created by a three-phase field winding distributed across the grooves on the pumped medium 1. The drawback of the pump is the complexity of the design due to the presence of a serrated inductor and poor specific mass and energy performance. The closest to the proposed technical essence and the achieved result is an induction pump comprising a magnetic core with a single-phase excitation winding and a channel with a bus consisting of longitudinal side portions and a shorting portion at the output end of the channel. The operation of the pump is based on the interaction of an alternating magnetic field with a current m, induced in the pumped medium by this field and closing the ms across the electrically conductive busbar 2. Its disadvantage is the increased electrical power losses in the busbar, which lead to a decrease in pump efficiency. The purpose of the invention is to increase the efficiency of the pump by reducing the electrical power loss in the longitudinal parts of the jacket. This goal is achieved by the fact that the pump contains at least two channels arranged parallel to each other in the magnetic field, interconnected by longitudinal parts of the woman, and short-circuiting parts of the buses of adjacent channels are installed on opposite sides of the magnetic circuit. Nearby, the arranged channels are hydraulically connected to each other on one side of the magnetic circuit so as to form a series-connecting channels. FIG. 1 shows a pump with three channels; cross section; in fig. 2 - the same, longitudinal section. The pump contains a magnetic core consisting of pole cores 1 and rm 2. A single-phase winding 3 is located on pole cores. The conductor is pumped through three parallel channels 4, 5 and 6, located in the gap between the pole cores. To the side walls of the channels on the length of the pole cores, the longitudinal parts 7 of the tire are connected in such a way that for the two adjacent channels they are generally formed by them. The short-circuit busbar parts 8 of adjacent channels are installed on opposite sides of the pole core 1. Nearly located channels are connected to each other on one side of the pole cores by means of connecting pipes 9 so that a series connection of the channels is formed. The pump works as follows. When the winding 3 is connected to a single-phase AC network, an alternating magnetic field is induced in the gap between the pole cores. When this field interacts with currents induced in the conductive medium, closing along the longitudinal, and shorting 20 parts of the tire, forces are created in each channel directed towards the shorting parts of the tire. Palichi near a number of channels of a common longitudinal part of the women leads to the fact that the induced electromotive forces in it from the floor of adjacent channels are directed oppositely. This makes it possible to significantly reduce the relative power loss from the currents in the closing bus, which leads to an increase in pump efficiency. For example, with a three-channel pump version, the power loss in the pinch is reduced by a factor of 2, and the specific overall mass parameters of the pump are also improved. Claims of Invention Electromagnetic induction pump for liquid conducting media comprising magnetic core with excitation winding and channel with bus consisting of longitudinal parts and short-circuit part at the output end of the channel, characterized in that with the aim of increasing efficiency by reducing electrical power losses in the longitudinal parts of the tire, the pump contains at least two channels parallel in the magnetic field, interconnected by the longitudinal parts of the tire, adjacent channels located hydraulically s with each drugo.m one side of the yoke so as to form a series connection of channels, and the short-circuiting portion tires mounted adjacent channels on opposite sides of the magnetic circuit. Sources of information taken into account in the examination 1. I. A. Tyutin. Electromagnetic pumps for liquid metals. Ed. Academy of Sciences of the Latvian SSR, Riga, 1959, p. 63, fig. 27.

2. Merenkov Yu. F., Stepanov V. G. Basic relations for a flat transformer-type linear pump with electromagnetic asymmetry. Collection of materials for the V Tallinsko. Meeting on electro-magnetic flowmeters and electrical fluid conductors. Issue 2, Tallinn, 1971, p. 55, fig. 1 (prototype).