JPS61502792A - Fluorine anion conductive glass - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] electromagnetic pump [Field of invention] In the present invention, electrical energy supplied to a liquid conductive medium is generated by electromagnetic interaction. Concerning electrical equipment that converts energy into moving conductive media, especially electromagnetic Regarding the pump.

[Prior art]

The efficiency of electromagnetic pumps does not exceed a few percent, in which case the supplied energy Most of the energy is consumed to heat the transmitted conductive medium and pump components. It will be done.

This is used in metallurgical applications to completely or partially penetrate into molten metal. This has a particularly unfavorable effect on the operating capacity of electromagnetic pumps.

Increase the strength in the material of the pump's magnetic system by heating the electromagnetic pump components. Decreasing the magnetic properties or completely destroying the component when it reaches the Curie point. This can also lead to breakdown of electrical insulation and transport of conductive media. This is similar to increasing the dissolution of pipe material.

The use of cooling systems tends to complicate the construction of electromagnetic pumps. Besides, it's cold Contact of the cooling medium with molten metal, especially electromagnetic pumps equipped with mag-path type magnetic circuits, are well known. (For example, French Patent No. 2,360,206, International Classification 2nd Edition HO2 N4/20° Published July 30, 1976). Directions for transporting conductive media It is surrounded by an open-circuit magnetic circuit at the junction of the section and the horizontal section.

The electromagnetic pump of the prior art described above further includes a closed magnetic circuit, and the closed magnetic circuit is It encloses a horizontal portion enlarged to accommodate the latter magnetic circuit.

The transfer of heat to the surrounding conductive medium is caused by the expansion of the above horizontal part and the part through which the flow passes. Equal to the width of the pipe (with pour, A, Verte, metallurgy, and the inlet between the gaps) A straight line with an opening for transferring conductive media and a cough line connected to the transfer line. Electrodes are provided for delivering a current to the conductive medium being delivered.

Another electrode is adjacent to the conduit on the opposite side. Run the pipe in a direction perpendicular to the pipe axis. A current flows between the electrodes within the filling conductive medium. If the conduit intersects a conductive medium The end opening of the conduit is used as the inlet opening for the transmission. Conductivity outside the conduit A conduit between the electrodes is used to prevent the sexual medium from having a shunt effect on the current distribution between the electrodes. The part has been moved sufficiently from the inlet opening. Therefore, the part of the pipe through which the current passes The heat transfer from It is hindered by

[Disclosure of the invention]

The present invention reduces overheating of conductive media in conduits for conveying conductive media, and An electromagnetic pump whose inlet opening is arranged in such a way as to therefore improve the efficiency of the pump. It is intended to provide a

The present invention provides a linear conduit for transporting a conductive medium using an inlet opening between magnetic poles. , and an electrode connected to the conduit for delivering an electric current to the conductive medium. According to the invention, the inlet opening is located on the side opposite to the electrode position. The cross-sectional area of the inlet opening is equal to or greater than the cross-sectional area of the conduit. This is achieved in electromagnetic pumps that are becoming larger in size.

Such a structural arrangement for the electromagnetic pump of the invention prevents excess conductive media in the conduit. A conduit through which electrical current is passed through a conductive medium within a container that serves to help reduce heat This is because it provides the shortest way to transfer heat from a conductive medium within.

[Brief explanation of the drawing]

The present invention will be appreciated upon consideration of the following detailed description of embodiments thereof, with appropriate reference to the accompanying drawings. It will be better understood if you look at it.

FIG. 1 is a schematic diagram (in partial longitudinal section) of an electromagnetic pump according to the invention; FIG. 2 is a sectional view taken along line 1--2 in FIG. 1, according to the present invention.

[Best mode for carrying out the invention]

Referring to Figure 1 of the accompanying drawings, the electromagnetic pump disclosed in the drawings is made of stainless steel. The body 1 has a cylindrical body 1 having a straight line disposed therein along its axis. It houses a linear conduit 2, the conduit being electrically conductive, the direction of movement of which is indicated by arrow B. This is for transporting the sexual medium 3.

Used to pump out magnesium alloys.

Arranged on the bottom of the main body 1 is an open-circuit magnetic circuit 4 and a circuit connected to the conduit 2. , and an electrode 5 designed to deliver a current to the conductive medium 3. In this specification In the embodiment of the disclosed invention, the surface of the electrode 5 is a continuation of the inner surface of the conduit 2.

It is connected to a conductive medium 3 in a container (not shown) which is energized. electrode 5 and the current conductor 6 are separated by a spacer 9 of electrically insulating material such as mica or glass fiber cloth. It is separated from the main body 1 by.

An inlet opening 10 is provided in the conduit 2 on the side opposite to the position of the electrode 5. , thereby ensuring that the current passes in a direction perpendicular to the axis of the conduit 2.

The end 11 of the conduit 2 arranged in the bottom part of the body 1 is directed towards the inlet opening 10. and is inclined at an angle α with respect to the axis of the conduit 2. The angle α depends on the viscosity and flow rate of the conductive medium 3. Depending on the angle between 0 and 45°, the conductive medium is injected into the inlet opening 10. The conduit 2 in is adjacent to the vertical wall on the bottom of the body. When adjacent like that, The part 12 of the bottom of the body 1 located above the opening 10 is parallel to the end 11 of the conduit 2. be. The main body 1 of the electromagnetic pump at the bottom part exceeding the height of the inlet opening 10 has a cross section. has a segment shape (Figure 2).

The conduit 2 is located between the magnetic poles 130 of the magnetic circuit 4 and has an expanded rectangular cross section. do.

Indeed, it is equal to or greater than that of conduit 2. The area ratio is It is in the range from 1 to 2.

Regarding the uniform current distribution in the conduit 2, the cross-sectional area of the inlet opening 10 and the area of the electrode 5 are The ratio is selected within the range of 0.5 to 165.

The electromagnetic pump according to the present invention operates as follows.

A part of the main body 1 of the electromagnetic pump (FIG. 1) is placed in a container (not shown). The conductive medium 3 is immersed in the conductive medium 3 to a depth such that the electrode 5 is immersed in the conductive medium 3. There is. The conductive medium 3 is delivered into the conduit 2 in the direction indicated by arrow C.

To start the electromagnetic pump, turn on power supply 7 (see arrow C). inside the conduit 2 in a direction perpendicular to its axis (in the direction shown) A current passes through.

This current induces a magnetic field in the magnetic circuit 4, whose vector is aligned with the axis of the conduit 2 and the electric current. perpendicular to the direction of flow. The result of the interaction between the magnetic field and the current in the conductive medium 3 As a result, an electric current is exerted by a force that moves the conductive medium along the conduit 2.

The heat released in the conductive medium 3 during the passage of the current through the conduit 2 is transferred to the opening 10. directly through the conductive medium outside the pump with lower temperature and suitably large volume. transferred to body 3.

Therefore, the amount of heating of the elements of the pump structure with the conduit 2 and the electrodes 5 is insignificant. It is. Another reason for low-grade heating is that the current flowing inside the body 1 is The point is that it only passes through one electrode 5 and the current conductor 6. pump The passage of an electric current through the surrounding conductive medium 3 effectively increases the temperature of the medium. It has no impact whatsoever.

Conventional electric currents result in overheating of the conductive medium being transferred by 70°C to 80°C. Compared to magnetic pumps, superheating in the electromagnetic pump of the present invention is between 15'C and 20°C. °C, which results in higher reliability of pump operation .

[Industrial application field]

Electromagnetic pumps are used for pumping various conductive liquids, especially electrolytes, molten metals and alloys. It is mainly used in industrial applications when transporting and flowing light metals such as magnesium-based alloys. Its usefulness is found.

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Claims (1)

[Claims] 1. a closed magnetic circuit in which a conductive medium is transferred between magnetic poles of the closed magnetic circuit; a straight conduit is arranged for the straight conduit to have an inlet opening, and the straight conduit has an inlet opening; In an electromagnetic pump, the inlet opening (10 ) is provided on the side of the conduit (2) opposite to the electrode (5), and the conduit (2) said inlet opening (1 0) is equal to the cross-sectional area of the pipe (2) or less than the cross-sectional area of the pipe (2). An electromagnetic pump characterized by its large size.