Rotary multi-pole moment field electromagnetic propeller

Technical Field

The invention belongs to the electromagnetic emission Technical Field, in particular, it relates to rotating multi-pole moment magnetic field based on the configuration of the electromagnetic propulsion device.

Background Art

Electromagnetic emission comprises an electromagnetic propulsion and electromagnetic ejection, means to promote by electromagnetic force device for projectile reaches a certain speed, due to the initially are used as military weapons, therefore also called electromagnetic gun. Conventional electromagnetic thruster can be divided into two major categories: a guiding rail type (guide rail gun), b is the coil (coil gun, reconnection artillery).

The current, conventional electromagnetic thruster there are some principal defect or facing certain technical difficulties. Guiding rail type electromagnetic thruster structure is simple, it utilizes two parallel large current the rail is located in the high-intensity magnetic field to accelerate the conductive armature. Because the adjacent under trillion An Ji current, armature, part of the guide rail, and the like to endure the extremely large heat flow impact, easy to cause serious ablation and surface exfoliation; guide rail of the sliding contact between the-armature will also have a molten, the guide rail is easy to produce at the outlet of the electric arc, these are serious constraints the service life of the guiding rail type electromagnetic propulsion, projectile outlet speed and system improve the emission efficiency. Coaxial coil type accelerator is the earliest electromagnetic propulsion forms, it is to use a series of long magnetism traveling wave sequence is generated by the coil of the solenoid to accelerate projectile coil (or induction eddy current armature) to achieve accelerated. Coaxial direct solenoid-coil type electromagnetic thruster to the projectile armature of the electromagnetic component role is reflected mainly in the radial direction, the radial stress to the accelerating force is far greater than the shaft, resulting in fluctuation generated by projectile movement of the armature, may be and the inner wall of the conduit-phase collision, therefore, the system is not high utilization rate of the electromagnetic force, the projectile armature ohmic loss is large, multi-level driving coil array of the energy consumption and energy storage is also relatively high, these factors cause propulsion efficiency is low, it is difficult to improve the performance, but also multi-stage propulsion accurate synchronous control system is complicated, easily causes the drive coil error operation to the loading current.

Content of the invention

In view of the shortcoming of the prior art, the purpose of this invention is the future-oriented high-speed, large mass and efficient emission requirements, solves the problems that the conventional coil type electromagnetic propeller shaft to accelerate the relatively small electromagnetic force for the defect of the components, to use multi-stage driven rotating multi-pole moment field to electromagnetic propulsion and transmitting, design of rotor multi-pole moment field electromagnetic propulsion mode, power supply circuit and the control mode, to protect projectile armature rotation-stabilized to the accelerated motion.

The purpose of this invention is realized through the following means:

Rotary multi-pole moment field electromagnetic thruster, is mainly composed of a field coil, projectile armature, power supply circuit, projectile position detection sensor and a synchronous exact control chip, the coils multipole moment by the magnetic field coil, is arranged in different levels of the coil groups multipole moment the direction of projectile movement of the armature; multipole moment coil group and the projectile armature is arranged between the conduit-of-flight; multipole moment coil assembly in each coil is connected with the power supply circuit in order to obtain the discharge pulse current.

Adopting the solution of the present invention, single-stage multipole moment to the configuration of the magnetic field coil of the center of the radial magnetic field is generated, and the electromagnetic force of the ring current interaction principal component is the axial acceleration force. In the multi-stage driven rotating multipole moment in of the magnetic field coil, magnetic field multipole moment the plane of the extension along the longitudinal direction and to reverse, the multi-stage drive coil under the action of the timing pulse current produces a rotation advancing magnetism traveling wave , magnetism traveling wave the change of the induced eddy current in the projectile armature, and eddy-current and magnetic field interact multipole moment to produce electromagnetic force, the projectile armature with the axial acceleration forces, ring to the role of the torque and lateral restoring force, the projectile armature can be rotated stably accelerated motion.

The invention rotary multi-pole moment field electromagnetic thruster to the projectile armature produces the axial direction of the stronger effect electromagnetic accelerating thrust; with electromagnetic accelerating force, transmitting projectile mass, high exit speed, rotary motion balance, suspension stability, the advantage of high efficiency and environmental protection. The invention can be widely applied to locomotive propulsion, rocket boosting, electromagnetic forming and the field of rotary digging machinery and the like, special recommendations for use in a vacuum pipeline transportation technology.

Description of drawings as follows:

Figure 1 to the invention rotates the multi-pole moment field electromagnetic thruster embodiment of the schematic diagram of the structure.

Figure 2 the Figure 1 embodiment of the overall system block diagram.

Figure 3 to the invention single-stage multi-principle of electromagnetic thruster moment field schematic cross-sectional diagram.

Figure 4   to the invention rotary multi-pole electromagnetic thruster moment field schematic cross section of an electromagnetic force.

Mode of execution:

The embodiment of Figure and with the further description of this invention.

multipole moment projectile coil assembly extending in the direction of the movement of the armature, between the adjacent two groups of coil multipole momentmultipole moment coil can be directly overlap, multi-stage drive coil of the torsion angle is zero, in other words, each stage driving coil are arranged side by side, the symmetrical multi-pole moment field without rotary effect to the projectile armature, projectile armature can meet the transverse stability. However, the advantages of more embodying the invention is of the structure of a spiral angular distribution, in other words multipole moment projectile coil assembly extending in the direction of movement of the armature and torsion are arranged at the same time, between the adjacent two groups of coil multipole momentmultipole moment coil takes the form of spiral angle distribution.

Combined with Figure 1 and Figure 2 of the present invention can be seen a three-stage rotary eight pole moment field electromagnetic thruster structure of embodiment, the spiral angle is 15 degrees.

The invention can be determined according to the requirements of the emission conditions of reasonable to design the outlet of the progression of the speed setting, by the projectile to the form of the number of pole pairs of the selected coil multipole moment , the rotational speed of the projectile is to set the level of the angle of torsion of the coil. Three stage rotary eight pole moment field electromagnetic thruster of the embodiment of the structure can be used as the structure of the invention a example solution : the propeller system includes three levels of eight-pole moment field driving coil group 1, projectile armature 2, flight conduit 3, power supply circuit 4, projectile position detection sensor 5, synchronous exact control chip and 6, and the like. Wherein, the power supply circuit 4 comprises a pulse capacitor, diode, power switch and its drive circuit, mainly for multipole moment supplying pulsed current to the driving coil, such as by variable frequency generator can also be provided other power supply. Each of the stages are connected in series in the multi-pole moment coil current, by a separate pulse the capacitor to discharge the same obtained by the diode connected in parallel with a driving coil of the fly-wheel. multipole moment magnetic field of a coil assembly 1 to the coil of copper or superconducting coil, the coil is made of copper in this example; projectile armature 2 can be a good conductor or superconductor aluminum sleeve, in this example by the good conductor of sight made to a plurality of tetrahedral structure, slotted at the front end, to the rear end of the; flight conduit 3 made by rigid insulating pipe, this embodiment can adopt the glass tube or insulating plastic pipe; projectile position sensor 5 to a laser range finder, is used for detecting the position of projectile movement of the armature, to analyze its movement speed; projectile position detection sensor 5 and a power supply circuit 4 of the power switch driving circuit is respectively connected with the synchronous precision control chip 6 is connected with the, synchronous accurate control chip 6 projectile motion receiving and processing real-time detection of the position information, in order to control the pulse capacitor circuit of the power switch is turned on.

Three stage rotary eight pole moment field electromagnetic thruster working process is as follows: initially, a capacitor is charged to the pulse in advance, the working voltage to reach the set; projectile armature from the static state or in a certain initial velocity into the 1st stage eight pole moment field the drive coil, the initial speed can be composed of a spring ejection acceleration obtained; when the projectile armature is moved to the 1st-stage driving coil when a predetermined position, the projectile armature position sensor detects that the signal, the synchronous control chip obtain the signal and controlling the trigger power switch is turned on, the pulse capacitor corresponding to the 1st stage multi-pole moment coil to discharge in series, each polar moment field coil produce the transient magnetic field and to generate eddy current in the projectile side, multi-pole moment field to generated by the coil of the center of the ring to the radial magnetic field towards the eddy current to produce electromagnetic force to the direction of movement of, the electromagnetic force for driving the projectile armature is accelerated motion. When the projectile armature is sequentially moved to the 2nd three-stage driving coil, by the same laser sensor to detect the projectile reaches the predetermined position, synchronous logic chip control pulse power supply circuit of the power switch are sequentially turned on, multi-stage drive coil to produce the rotary forward along the axial direction of the multi-pole moment fieldmagnetism traveling wave , the magnetism traveling wave induction projectile armature by electromagnetic force, the armature in the flight projectile can be ensured as in the accelerated motion of the rotation is stable.

Combined with Figure 3 and Figure 4 the working principle of this invention to have a better understanding, single-stage, multi-pole moment field electromagnetic thruster of the principle such as Figure 3 shows, the emission patterns based on the linear induction motor principle and heavy type coil launch technology, when the pulse current applied to the magnetic field coil multipole moment when connected in series, capable of generating the magnetic field coil multipole moment to B of the center of the radial magnetic field, because the transient magnetic field of the induction effect, multipole moment small independent coil assembly in the projectile side of the coil in reverse eddy current induced J, a plurality of small coil common role is generated in the projectile armature ring current effect. In this way, multi-pole moment coil with the radial magnetic field generated by the projectile armature on the ampere force generating eddy current effects, the main component of the electromagnetic force to the projectile armature is shown as axial acceleration forces, and a smaller radial compressive force. As compared to conventional straight having electromagnetic propeller shaft to the defect of the relatively small acceleration forces, has the obvious advantage of this invention. multipole moment magnetic field coil type electromagnetic thruster use of magnetic force electrically can be enhanced, the emission efficiency of the system.

For rotating multi-pole moment field electromagnetic thruster multi-stage transmission, when the projectile armature arrives at all levels of the drive coil in the vicinity of the predetermined position, to the levels in the order of the drive coil pulse current wherein, the epipolar moment coil and twisting action of the longitudinally-extending, multi-stage dipole moment in the coil can be the space to produce magnetism traveling wave. The magnetism traveling wave in the projectile armature induction the axial vortex J_z and toroidal vortex J_φ, and multipolar interactions B moment diameter to the magnetic field, by the axial acceleration forces of the projectile armature, ring to the torque and transverse repulsive force (restoring force), projectile armature eddy current with electromagnetic signal such as Figure 4 indicated by the: projectile armature 2 of the axial acceleration forces the F_z, angular torsional-F_φ, annularly and torque M_z. Axial acceleration forces accelerate the projectile armature motion in the longitudinal direction, the circumferential torque for guaranteeing projectile armature for rotary movement, transverse repulsive force as the projectile armature suspension stabilizing providing restoring force, the three direction of the electromagnetic force, and projectile armature motion and high speed stability. This is also the invention another large prominent advantage, and can be extended to the use of multi-field.

With conventional direct solenoid-type coil electromagnetic propeller shaft to accelerate the electromagnetic force for the defect of insufficient compared with the weight of, the outstanding advantage of this invention is: rotating multi-pole moment field electromagnetic thruster application multipole moment magnetic field configuration, the electromagnetic emission, to the projectile armature produces the axial direction of the stronger effect electromagnetic accelerating thrust; multi-stage driven rotating multi-pole moment field coil can produce a multi-polar rotation advancing magnetism traveling wavemoment field , to produce the axial acceleration forces to the projectile armature, to the torque ring, and the role of the horizontal restoring force; the propeller has a electromagnetic accelerating force, transmitting projectile mass, high exit speed, rotary motion balance, suspension stability, the advantage of high efficiency and environmental protection. The invention rotary multi-pole moment field electromagnetic propulsion mode can be widely applied in the locomotive propulsion, rocket boosting, electromagnetic forming, and the field of rotary digging machinery and the like, special recommendations will the invention for use in a vacuum pipeline transportation technology.

The above shown and described the main feature of the invention, invention essence, the basic principle, technical, and Mode of execution, those of skill in the art will be aware that, here, the embodiment is in order to help the reader understand the principle of this invention, without departing from the present invention, on the premise of and scope, the invention will also have various other changes and improvements, should be understood as within the scope of protection of this invention. The invention requires that the scope of protection of the right by the attached claims and invention and define the equivalent.