Relationy accelerator

 

(57) Abstract:

The accelerator can be used for acceleration of a rigid body (anchor) a relatively large mass. The accelerator contains N pairs of rails installed insulation intervals one above the other and N - 1 stationary conductive jumper. The optimized ratio of the geometric dimensions designs and specifications. In addition, the additional stationary jumper, connected in parallel to the existing and installed in the same plane with the corresponding existing stationary jumpers on the outer perimeter of the cross section of the channel relationname accelerator. Half of the even number of stationary jumper is installed on the free external proprietry in the same plane pairs with the ridges of the other half. Insulators, rails and anchors have developed mating surface. Conductive jumper anchor yourself on the insulator anchor with the possibility of displacement in the plane of the pairs of rails, perpendicular to the direction of movement of the armature. The invention provides improved reliability. 5 C.p. f-crystals, 9 Il.

The invention relates to linear electric motors and can be proetel, contains the channel formed by three pairs of electrically isolated parallel rails and anchor containing three electrically isolated from other conductive jumpers, each of which has a sliding electrical contact with the respective pair of rails. The anchor is mounted for movement along the channel. A separate pair of rails connected to different sources of electrical energy. The use of three pairs of rails allows you to obtain the necessary accelerating force at smaller values of the current in each pair of rails and the corresponding jumpers anchors, and thus reduces losses on the active resistance of rails and bridges anchors [1].

The disadvantage of this device is the complexity of the design of the electric power source and conductors for transmission of electrical energy from the source to the accelerator channel.

The closest in technical essence and the achieved technical result and chosen for the prototype is relationy accelerator containing accelerator channel formed by N identical pairs of electrically isolated conductive parallel rails mounted stationary in Elektrisola the kami respectively one above the other, anchor containing N electrically isolated from each other electrically conducting plates, each of which is fixed on the insulator anchor and slidable on the respective pair of rails. In addition, there are N-1 stationary conductive jumpers connecting the intake side of the second rails of the i-th pair of first rails i+1 pairs (where i=1.. . N-1) and envelopes for external proprietry cross-sectional relationname accelerator, and the first rail of the first pair and the second rail of the N-th pairs bred for connection to a source of electrical energy. Thus, the N pairs of rails are connected in series stationary jumpers. In this relationem accelerator uses a single source of electrical energy, which can simplify the design of conductors and to reduce losses of electricity during transmission from the source to the accelerator.

The disadvantage of this relationname accelerator is its relatively low reliability due to the need to use more high-voltage electric power source. This is due to high value of the initial input, and linear inductance. The input inductance is determined by inductivist the initial input inductance dangerous overvoltages when switching on the power source, high inductance requires a high voltage source with a high speed of the armature. A simple increase of the insulation gaps increases dielectric strength, but leads to a decrease linear inductance, and hence accelerating the anchor force. Therefore, to improve the reliability required to optimize the ratio of basic technical characteristics and the main geometric dimensions of the structure and in the framework of optimizing restrictions, to take additional measures to increase the electric strength relationname accelerator.

The technical result of the present invention is to improve reliability by optimizing the geometrical dimensions of the design relationname accelerator, reducing the initial input inductance, increasing the electric strength of insulating gaps, improve the reliability of the sliding contacts.

To achieve the technical result of the proposed to improve relationy accelerator containing accelerator channel formed by N identical pairs of electrically isolated conductive parallel rails mounted stationary in elektroiskorovym cor the air gaps, respectively, one above the other, anchor containing N electrically isolated from each other electrically conducting plates, each of which is installed on the common insulators armature slidable on the rails of the respective pairs and N-1 stationary conductive jumpers connecting the intake side of the second rails of the i-th pair of first rails i+1 pairs (where i=1... N-1). The improvement lies in the fact that the ratio of quantities technical specifications (operating voltage and current, resistance, speed and weight of the anchor) and the geometric dimensions relationname accelerator (the length of the channel X, the size of the caliber D and C and the width of the rail (b) is determined by the mathematical expression:

< / BR>
Lp> m V2/(Id2X) (2)

Lp= 210-7N2{[(D+b)/b+1]2Lp(D+C+2 b)+[(D+b)/b-1]2Lp(D+C) - 2[(D+b)/b]2Ln(D+C+b)-2 Lp(C+b)} (3)

where Lp- inductance relationname accelerator GN;

m is the mass of anchor kg;

Um- the maximum permissible voltage at the input terminals relationname accelerator, B;

R is the total resistance of conductive elements relationname accelerator, Ohm;

Id- the effective value of current rail is I, m/s;

N is the number of pairs of rails relationname accelerator;

D is the distance between the sliding contact surfaces of one jumper, anchor, m;

b - the width of the rail, m;

C - the total height of the set N of rails and insulating gaps between them, m

The optimal length of the channel relationname accelerator is determined by the following mathematical expression:

X = m V3/[Id(Um- RId)] (4)

To reduce the initial voltage by reducing the input inductance introduced additional stationary electrically conductive jumper connected in parallel to the existing stationary conductive lintels. These existing and additional jumpers are installed in pairs in the same plane as the outer perimeter of the cross section relationname accelerator.

In the preferred design option relationname accelerator half of the even number of stationary electrically conductive jumpers are installed on the free external proprietry cross-sectional relationname accelerator with the ridges of the other half of the pairs in the same plane.

The electrical insulation between corresponding rails adjacent pairs have respitatory installed on the insulator anchor with the possibility of displacement in the plane of the pairs of rails perpendicular to the direction of movement of the anchor along the guide insulators anchor.

The essence of the proposed invention is illustrated the accompanying drawings. In Fig. 1, 2, 3 shows a drawing relationname accelerator containing N (in this example N= 3) pairs of rails in three projections. In Fig. 4 and 5 show two projections of the preferred option design input relationname accelerator. In Fig. 6 and 7 shows the mating surfaces of the insulators. In Fig. 8 and 9 shows the structure of an armature in two projections.

In Fig. 1 shows relationname accelerator side. Slanted double hatching highlighted in the cross section of the stationary insulators 1 and horizontal hatching section insulators 2 a movable armature. The first conductive rails 3 and second conductive rails 4 (section not shown) installed in parallel with the insulating intervals one above the other. Three conductive jumper 5 anchors installed on the insulator 2 anchors with the possibility of sliding on the rails above. Two fixed conductive jumper 6 is connected to the side of the entrance channel of the accelerator, respectively, with the second rails 4, the first and second pair and the first rails 3 the second and third pair. Jumper 6 is installed on the outer proprietry cross-sectional relationname ascarite free external proprietry cross-sectional relationname accelerator in the same plane with the corresponding stationary jumper 6. In addition, in the drawing: X - the length of the channel relationname accelerator, C is the total height of the set N of rails and insulating gaps between them.

In Fig. 2 shows relationname accelerator on top. Slanted double hatching highlighted in the cross section of the stationary insulators 1 and vertical shading insulation 2 rolling anchors. As shown in Fig. 1 shows conductive rails 3 and 4, conductive jumper 5 anchor insulator 2 anchors, fixed jumpers 6 and additional stationary jumper 7. Letters A and B noted the conclusions of the rail 3 of the first pair and the rail 4 of the third pair, designed for connection to a source of electrical energy. In addition, mark: D - distance between the sliding contact surfaces of one jumper, anchor, b is the width of the rail.

In Fig. 3 shows relationname accelerator from the entrance. Slanted double hatching selected, for clarity, visible stationary insulating part 1, and the horizontal stroke of the insulators 2 a movable armature. As shown in Fig. 1 shows conductive rails 3 and 4, conductive ridges 5 of the armature, a stationary conductive jumper 6 and additional stationary comproved the accelerator, which marked the stationary insulators 1, the insulators 2 anchors, conductive rails 3 and 4, conductive ridges 5 of the armature and the stationary conductive jumper 6.

In Fig. 5 shows a side view of the input part of the preferred designs relationname accelerator, which marked the stationary insulator 1 and the stationary conductive jumpers 6, installed in pairs in the same plane cross section of the channel.

In Fig. 6 and 7 shows the stationary insulator 1 insulator 2 anchors, a pair of conductive rails 3 and 4 and conductive jumper 5 anchors.

In Fig. 8 and 9 shows the insulator 2 anchors, as well as conductive jumper 5 anchors. Arrow V indicates the direction of movement of the armature during acceleration, and an arrow Y indicates the direction of possible movement jumper 5 anchors on the insulator 2 anchors.

Operating current is selected from the conditions of the allowed energy loss in the active resistance of rails and bridges. The inequalities (1), (2) and equation (3) by setting the maximum allowable operating voltage Um, the operating current Idrequired speed of the armature V and mass m anchor determines the ratio of the geometric dimensions relationname accelerator: it is achieving the desired speed of the armature V, and the inequality (1) provides electrical design strength, as this input voltage will not exceed the allowable operating voltage Um. Thus, specifications relationname accelerator associated with structural characteristics of the mathematical expression that provides the desired reliability in achieving the desired technical characteristics.

The optimal value of the geometric dimensions is obtained by choosing the length of channel X in the formula (4). Using the obtained value of X, the inequalities (1) and (2) determine the required magnitude of the linear inductance Lp. Then, for the obtained values of the linear inductance expression (3), we obtain the ratio of the number of pairs of rails of the accelerator N, and basic dimensions of the channel cross section with a railgun. Given the caliber of the anchor is determined by the dimensions D and C, we can uniquely determine the value of b for different number of pairs of rails N. the ratio of the dimensions b, C and D can be defined by specifying their concrete values based on other criteria. For example, the values of b and C can be chosen from the conditions of the limitations on the current density and the value of D in the above proposed mathematical way. In the initial position the anchor is located at the entrance relationname accelerator, and the source of electrical energy (not shown) connected to the leads A and B of the conductive rails 3 and 4. When the supply of electric energy on outputs A and B receive a voltage, relatively low due to the low value of the input impedance, which is achieved by the presence of additional stationary jumper 7. The total input impedance is reduced due to the fact that the inductance of the fixed bridges in this design reduced more than twice. The circuit consisting of the initial sections of rails 3 and 4 jumper 5 anchors each pair of rails connected in series with a fixed jumpers 6 and additional jumpers 7 electric current. In the result of the interaction of magnetic fields of the current rails and jumpers anchor occurs ampere is:

F = 0,5 LpId2(6)

Under the influence of this force, the anchor rapidly moved along the rails by the arrow. Thus the effective voltage at the input relationname accelerator is:

Ud= (LpV+R)Id(7)

When direct current electric power source that provides a constant accelerating anchor the power amp is transalation the intervals between adjacent same rails 3 and 4 and the insulating gaps between the conductive vias 5 anchors, due to the developed surface of the specified isolation is achieved by high voltage surface breakdown and thus ensures an improved allowable working tension.

The preferred embodiment of the device of Fig. 4, 5 principle of operation corresponds to the above except that when the supply of electric energy of the initial overvoltage at the input between terminals A and B are lower than in previous designs. This is achieved by the fact that the input impedance of this option is lower due to the reduced inductance of shorter initial findings sections of rails 3 and 4 to connect the stationary jumper 6.

It is shown in Fig. 6 and 7 embodiments of the developed surface of the fixed insulation 1 between adjacent rails 3, and between the rails 4 and mating with a surface of the insulator 2 anchors between the conductive vias 5 anchors provide high voltage electrical breakdown along the surface of the insulators with relatively thin insulation directly between the conductive elements. High voltage electrical breakdown allows you to raise the value of the permissible operating voltage and thereby increase the="ptx2">

Option isolation, shown in Fig. 7, in which a stationary insulation 1 developed into isolation 2 anchors, is preferred. In this embodiment, the insulation sheet 1 is safer work when compressive efforts, caused by flow of the operating current on the rails due to less deformation of the insulator 1, and therefore, less friction on the mating surfaces.

A feature of the anchor shown in two projections in Fig. 8 and 9, consists in the following. When moving under the action of forces amps along the canal in the direction of arrow V of conductive ridges 5 of the anchor slide on rails relationname accelerator. Because these jumpers installed on the insulator 2 anchors with the possibility of lateral movement relative to each other and an insulator 2, in the Y direction, when passing through areas with uneven or when sliding on rails installed with errors in position, for example when the offset position of the pairs of rails relative to each other, a separate jumper 5 anchors are moved in the transverse direction Y, without causing distortions, jamming, violations of the electrical contact at the other jumpers. Guides for lateral movement are surface isolatola solution allows to increase the reliability relationname accelerator by increasing the electric strength of the structure. This is achieved by choosing the optimal geometrical dimensions for the specified technical characteristics of the mathematical expressions, the reduction of the input impedance by reducing the inductance of the fixed jumpers installed at the entrance of the accelerator, the creation of the developed surface of the insulators, ensuring durability at a valid operating voltage. Reliable electrical contact between the ridges of the anchor rails and reduces the likelihood of a surge as a result of its violations, and also reduces erosion of the contact surface with the appearance of the plasma contact.

Literature

1. Antonios Chllita, Brian L. Maas, Davi P, Bauer and Mark Heyse, IEEE Transactions on Magnetics vol. 29, N 1, January, 1993, p.793.

2. James G. Moldenhauer and Gene E. Hauze, IEEE Transactions in Magnetics vol. MAG-20, No. 2, January, 1984, p.283.

1. Relationy accelerator containing insulating housing, an anchor and a few N pairs of parallel conductive rails forming the channel of the accelerator and fixed in the housing so that the first tracks of all pairs and second rails all pairs separated by insulating gaps, the anchor includes electrically isolated from each other electrically conductive jumper on the number of rails N, set the factors connected with the first rails i + 1 pairs (where i = 1 ... N - 1) through a stationary electrically conductive jumpers, and the first rail of the first pair and the second rail of the N-th pairs bred for connection to a power source, characterized in that the parameters relationname accelerator are connected in the following ratio

< / BR>
Lp> m v2/(Id2x),

Lp= 2 10-7N2{[(D + b)/b + 1]2Lp(D + C + 2 b) + [(D + b)/b - 1]2Lp(D + C) - 2 [(D + b)/b]2Lp(D + C + b) - 2 Lp(C + b)},

where Lp- inductance relationname accelerator, N.;

m is the mass of anchor kg;

Um- the maximum permissible voltage at the input terminals relationname of the accelerator;

R is the total resistance of conductive elements relationname accelerator, Ohm;

Id- true RMS current relationname accelerator, AND;

X - the length of the channel relationname accelerator, m;

V is the maximum speed of the armature, m/s;

N is the number of pairs of rails relationname accelerator;

D is the distance between the sliding contact surfaces of one jumper, anchor, m;

b - the width of the rail, m;

C - the total height of the set N of rails and insulating gaps between them, m

2. Relationy accelerator for ro>d(Um- R Id)].

3. Relationy accelerator on PP.1 and 2, characterized in that the additional stationary electrically conductive jumper connected in parallel to the existing stationary conductive lintels, with existing and additional jumpers are installed in pairs on the outer periphery in the same plane cross-section relationname accelerator.

4. Relationy accelerator on PP.1 and 2, characterized in that half of the even number of stationary electrically conductive jumper installed in pairs on the outer periphery in the same plane cross-section railgun with the ridges of the other half.

5. Relationy accelerator on PP.1 to 4, characterized in that the electrical insulation between corresponding rails of adjacent pairs and the electrical insulation between the ridges anchors have developed mating with each other surface.

6. Relationy accelerator on PP.1 to 4, characterized in that the electrically conductive jumper anchors installed on the insulator anchor with the possibility of displacement in the plane of the pairs of rails, perpendicular to the direction of movement of the armature.

 

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