SU1623965A1 - Device for electromagnetic treatment of water - Google Patents

Abstract

The invention is inclined to devices for magnetic treatment of a fluid by an electromagnetic field and can be used for treating water in various sectors of a national economy. The aim of the invention is to increase the magnetic processing efficiency and productivity by oscillating an electromagnetic field and adjusting the frequency. A device for electromagnetic treatment of a liquid consists of an IC stator 1 of an asynchronous electric motor with a winding 2, which consists of a trope of plate windings, a magnetic conductor 3, (a ferromagnetic core 4 with a diamagnetic clamp 5, a coil of pipeline f, electrically insulating disks 7, face covers 8 , power supply with adjustable constant voltage at the output, thyristors, diode and control unit. 4 Il. (L OE. ee 00 co o ate

Description

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The invention relates to devices for magnetic treatment of a fluid by an electromagnetic field and can be used to treat water in various sectors of the national economy in order to reduce scale formation on the heating surface, as well as to improve its other technological qualities.

The purpose of the invention is to increase the efficiency of magnetic treatment and productivity by swinging an electromagnetic field.

Figure 1 schematically shows the location of the pipeline inside the stator of an asynchronous motor with phase windings; Fig. 2 illustrates the connection of the phase windings of the device; in Fig. 3, the oscillation of the magnetic field relative to the pipeline when the upper thyristor is turned on; figure 4 - the same, when turning on the lower thyristor.

The device consists of a stator 1 of an asynchronous electric motor with a winding 2 consisting of three phase windings 2a, 26, 2c (with the beginnings C ,,, C2, C-) and the ends Sc, C, C6, respectively) connected by a star or a triangle and magnetic core 3. Inside the stator 1, along its axis there is a ferromagnetic core 4 with a spiral groove and a diamagnetic insert 5, which is fixed rigidly with any known type of joint. In the gap between the magnetic core 3 of the stator 1 and the core 4 there is a diamagnetic coil of the pipeline 6. The coil of the pipeline 6 is wound onto the core 4 between the diamagnetic inserts 5. The entire system is fixed by the diamagnetic electrically insulating discs 7 and closed with end caps 8. The winding of the electromagnet 2c () starts C is connected to one output of the source 9 of the rectified regulated voltage. The windings 2a (C and C4) and 26 (C2-Cf) with C4 and C initiators with series-connected thyristors 10 are connected to another output of source 9. Parallel to windings 2a and 26, elements 11 are included compensating the inductive nature of windings 2a and 26 (for example, diodes ) and ensure reliable operation of thyristors 10 and adjustment

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the sweep frequency of the control unit 12, mainly in the range of 1-21 Hz.

The device works as follows.

A liquid (water) is passed through the coil of the pipeline 6, and a constant pulsating current with a switching frequency regulated by the block 12 flows through the windings 2. In the magnetic circuit 3 a magnetic force field is excited, creating the poles N and S. The windings 2 of the stator 1 of the asynchronous motor are turned on , for example, according to the scheme star (fig.Z). In the first case, the pulsed direct current flows through two windings 2a () and 2c (Cb-C3), creating in magnetode 3, as shown, two pairs of poles N and S, At the time of disconnection of the thyristor 10 connected in series with winding 2a, arising in it, the back EMF is reduced, due to the shunt effect of diode 11, which prevents the blocking voltage from winding 26 to the other thyristor 10 at the moment of its activation. After switching the thyristors K) (Fig. 4), the current flows through the windings 26 (C) and 2c (Ce-Ce), while the winding 2c (C, -C6) remains permanently connected. After switching the thyristors 10, the poles of the stator 1 in magnetroprode 3 seem to move along its circumference to the second position, and on the next switching to the initial (first) position, etc. Thus, a swinging magnetic field appears, i.e. the number of poles N and S relative to the coil of the pipeline 6 can be increased according to the switching frequency of thyristors 10. Magnetic power lines from one pole (N). The magnetic conductor 3 penetrates the coil of the pipeline 6 (one coil of the coil of the pipeline 6 is shown in FIG. 3) t through the ferromagnetic core 4, then penetrate the coil of the pipeline 6 and close at the other pole (S) of the magnetic circuit 3, which achieves the maximum intersection of magnetic fluxes created by the poles N and S with the fluid flow and effective Its processing. When fluid moves, it passes n turns of the coil of the pipeline 6, each time crossing 2p fK poles created in the magnetic core 3 (p is the number of

pairs of stator poles I; f is the oscillation frequency, regulated by block 12), i.e. subjected to n "2p. f-processing. So, according to figure 1 and fig.Z p 0.8; p 2 and, for example, with fK 2 2 Hz, we have n p 2p.f -64-fold processing. By increasing the switching frequency of the I2 unit, the oscillation frequency of the magnetic field is increased, which is equivalent to an increase in the number of poles and multiplicity, and consequently, an increase in the efficiency of liquid treatment.

The results of studies of the dependence of magnetic susceptibility on the multiplicity of intersection with magnetic flux show that the highest effect of magnetic treatment is achieved with a multiplicity of 35 to 42. With the lowest values of the device parameters (n 1; 2p 2) to provide a larger value of the specified multiplicity range, the sweep frequency fx should be equal to 21 Hz. With the largest parameters of the device, determined by the constructive structures (in Fig. 1, P8, Fig. 3p 4) to ensure a smaller value of the frequency range, the sweep frequency f takes a value of 1 Hz. Thus, it is effective to treat a liquid, for example, water, with its different salts. the content is carried out by adjusting the frequency of the swing of the magnetic field in the range of 1-21 Hz in one block 12, which does not require complicating the design of the device and additional equipment, i.e. it is universal. In addition, a wide range of the frequency of water treatment by adjusting the frequency of the oscillation of the magnetic field makes it possible to increase productivity by possibly increasing the flow rate of the liquid. For example, with a calculated fluid flow rate of 1 m / s and a processing ratio of 40 (device parameters: p 5, 2p 4, fK 2 Hz, an increase in the frequency of the swing by a factor of two allows in the first approximation to increase the speed to 2 m / s with the same processing efficiency .

The electromagnetic field voltage is also controlled by varying the supply voltage of the windings 2, which, together with the regulation of the duty cycle and the asymmetry of the sweeping frequency of the magnetic field by the control unit 12, expands the possibilities of determining the optimal operation mode of the device depending on the properties of the treated fluid.

Grooves with diamagnetic inserts 5 on the surface of the core 4 under the coil of the pipeline 6 form

kind of protruding pole

portions of core 4 on which magnetic field lines are concentrated. By this, the passage of the magnetic field lines between the pipeline 6 is weakened, and their inefficient sector areas are also eliminated on the sides, thereby ensuring the passage of the magnetic flux through the full cross section of the pipeline 6.

0 It also increases the efficiency of using an electromagnetic field, i.e. device performance.

Thus, the use of the present invention allows

5 due to the swinging of the magnetic field, adjusting the frequency of the swing and the tension of the field to increase the efficiency and productivity of water treatment with any salinity without introducing

0 additional electromagnets, as well as without increasing their size.

Claims (1)

Invention Formula A device for electromagnetic treatment of a liquid, containing a power source, a diamagnetic pipeline, an electromagnet with seal, a second and third windings, made in the form of an asynchronous motor stator and mounted outside the diamagnetic pipeline, as well as first and second thyristors, control, which passages are connected by the first and the second outputs of the control circuit, the first terminals of the first and second windings of the electromagnet are connected to the cathodes of the first and second thyristors, and their anodes are connected to the corresponding A power source, characterized in that, in order to increase the efficiency of magnetic treatment and productivity by swinging the electromagnetic field, PS-ry and second diodes are included in its composition, the control unit is adapted to control the frequency of the control pulses, and adjustable, the second output of the power source is connected to the first terminal of the third winding of the electromagnet, the second terminals of the first, second and third windings are connected to the anodes of the first and second diodes, the cathodes of which are connected to the cathodes of the first and second and third thyristor, respectively. Cr d Phie2 B  H Fig.d 0 - K} tooCJO -with tss 2 e