CN106300877B - A kind of Electromagnetic Control helicla flute accelerator - Google Patents

Abstract

The invention discloses an electromagnetically controlled spiral groove acceleration device, comprising: a magnetic field generating device for generating an alternating magnetic field, which includes a silicon steel sheet iron core and a winding wound inside the silicon steel sheet iron core; a spiral groove along the axis It is arranged in the magnetic field generating device to convert the rotational speed of the accelerated body into an axial linear motion speed; the accelerated body cooperates with the spiral groove through an external thread, and two sides are symmetrically embedded in it. The NdFeB permanent magnet with the opposite magnetic level; the input power supply device, including a high-power inverter generator and a power consumption meter connected sequentially between the unidirectional AC power supply and the magnetic field generator through a circuit, are used to adjust the frequency of the input AC power Realize the rotation speed adjustment of the magnetic field. The invention has a simple structure, realizes the acceleration of the accelerated object by using the alternating magnetic field and the application of the spiral groove, and is expected to become a novel electromagnetic orbital acceleration device.

Description

An electromagnetically controlled spiral groove acceleration device

technical field

The invention relates to a spiral groove acceleration device based on electromagnetic control, and is especially suitable for the electromagnetic acceleration device.

Background technique

The phenomenon that a current-carrying conductor is stressed in a magnetic field is one of the important phenomena in electromagnetism. Through the interaction between electricity and magnetism, the phenomenon of mechanical force is generated, and electromagnetic energy is converted into kinetic energy. In the field of accelerated launch, most of the launch devices that belong to chemical launch can no longer meet the requirements of ultra-high kinetic energy for launch capability. In this case, a new generation of ultra-high-speed electromagnetic launch acceleration technology has been produced, and electromagnetic energy has been used as the power source of the propulsion system. The so-called electromagnetic accelerated launch is to place a magnetic object on a specific spiral groove, and use an external magnetic field to act on its force and torque, and quickly change the direction of the magnetic field through the change of the high-frequency magnetic field. Attracting and driving the object to rotate, the slope nature of the mounted spiral groove converts the axial high-speed rotation into the axial linear acceleration motion.

Contents of the invention

The new acceleration method used in this paper mainly relies on Faraday's law of electromagnetic induction. The overall principle of the drive is to use the force and torque of the external magnetic field on the magnetic object to act on the accelerated object in the form of magnetic torque. body. Relying on the cooperation of the helical device and the helical groove of the accelerated body, the kinetic energy of the rotation is converted into the axial linear kinetic energy to complete the acceleration.

The technical scheme adopted in the present invention is:

An electromagnetically controlled spiral groove acceleration device, comprising:

The magnetic field generating device is used to generate an alternating magnetic field, which includes a silicon steel sheet iron core and a winding wound inside the silicon steel sheet iron core;

a spiral groove, arranged in the magnetic field generating device along the axis, for converting the rotational speed of the accelerated body into an axial linear motion speed;

The accelerated body cooperates with the spiral groove through external threads, and two NdFeB permanent magnets with opposite magnetic poles are embedded symmetrically on both sides;

The input power supply device includes a high-power inverter and a power consumption meter that are sequentially connected between the single-phase AC power supply and the magnetic field generator through a circuit, and is used to adjust the rotation speed of the magnetic field by adjusting the frequency of the input AC power.

Further, the silicon steel sheet iron core is arranged in a cylindrical shape in the magnetic field generating device, and is formed by stacking and pressing silicon steel sheets with a thickness of 0.5 mm and insulating varnish between the sheets. The inner surface of the silicon steel sheet iron core is along the Straight slots are evenly distributed in the axial direction, and the same windings are arranged one by one at the same center to form a zigzag form and wind in the straight slots.

Further, the silicon steel sheet iron core is provided with gaps between adjacent windings to form ventilation grooves for heat dissipation.

Further, the winding includes a main winding and a starting winding connected in parallel, and a phase-splitting capacitor is connected in series to the starting winding, so that the phase difference between the current of the starting winding and the main winding is approximately 90 degrees, and the main winding and The starting windings differ by 90 degrees in the spatial position of the assembly, and generate a rotating magnetic field in space to drive the rotation of the accelerated body.

Further, the power consumption meter adopts WL258 power consumption meter.

Further, the material of the spiral groove is 7075 aluminum alloy.

Further, the material of the accelerated body is PTFE wear-resistant plastic.

Further, the external thread of the accelerated body is equal to the pitch of the internal thread of the spiral groove, the lead angle Ψ of the thread is equal, and the direction of rotation is the same.

Compared with the prior art, the present invention mainly relies on Faraday's law of electromagnetic induction, uses the force and torque of the external magnetic field on the magnetic object, acts on the accelerated body in the form of magnetic torque, and relies on the accelerated body The combination of the external thread and the spiral groove converts the kinetic energy of the rotation into the linear kinetic energy of the axial direction to complete the acceleration, and has many advantages such as flexible and convenient control, simple structure and easy implementation, stability and durability.

Description of drawings

Fig. 1 is a top sectional view of the main body of the accelerator.

Fig. 2 is a partial schematic diagram of the front section of the electromagnetic generating device.

Figure 3 is a phase-splitting circuit diagram of the electromagnetic generator.

Fig. 4 is a sectional view of the emitting accelerated body.

Figure 5 is a diagram of the input power supply device.

In the figure: 1-magnetic field generating device, 2-accelerated body, 3-spiral groove, 4-silicon steel sheet core, 5-winding, 6-main winding, 7-starting winding, 8-phase split capacitor, 9-neodymium Iron-boron permanent magnet, 10-high-power inverter, 11-internal thread, 12-power consumption meter.

Detailed ways

The patent will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the implementation of the patent is not limited thereto.

Example

As shown in Figures 1 to 5, an electromagnetically controlled spiral groove acceleration device includes:

The magnetic field generating device 1 is used to generate an alternating magnetic field, and includes a silicon steel sheet iron core 4 and a winding 5 wound inside the silicon steel sheet iron core 4;

The spiral groove 3 is arranged in the magnetic field generating device 1 along the axis, and is used to convert the rotational speed of the accelerated body 2 into an axial linear motion speed;

The accelerated body 2 cooperates with the spiral groove 3 through the external thread 11, and two NdFeB permanent magnets 9 with opposite magnetic poles are embedded symmetrically on both sides;

The input power supply device includes a high-power inverter 10 and a power consumption meter 12 sequentially connected between the single-phase AC power supply and the magnetic field generator 1 through a circuit, and is used to adjust the rotation speed of the magnetic field by adjusting the frequency of the input AC power.

Specifically, as shown in FIG. 2 , the silicon steel sheet iron core 4 is in the shape of a cylinder and is installed in the magnetic field generator 1 , which is a part of the main magnetic flux circuit of the motor. In order to reduce the loss of the silicon steel sheet core 4, it is formed by stacking and pressing silicon steel sheets with a thickness of 0.5mm and insulating varnish between the sheets. The inner surface of the circumference of the silicon steel sheet iron core 4 has straight grooves evenly distributed along the axial direction.

Specifically, as shown in Figure 3, the winding 5 is divided into a main winding 6 and a starting winding 7. Since the input single-phase alternating current cannot generate a rotating magnetic field, a starting winding 7 is added in parallel to the device, and the starting winding 7 should be connected in series. A suitable phase-splitting capacitor 8 makes the current of the main winding approximately 90 degrees out of phase. In this way, two currents with a difference of 90 degrees in time are passed into two windings with a difference of 90 degrees in space, and a (two-phase) rotating magnetic field will be generated in space. Under the action of this rotating magnetic field, the accelerated body 2 is driven to rotate . It should be noted that several rectangular coils of the same coil group are embedded one by one according to the same central position and arranged in a zigzag pattern. In order to increase the heat dissipation area, the silicon steel sheet iron core 4 is provided with gaps between adjacent windings 6 to form ventilation grooves 41 for heat dissipation.

As shown in FIG. 4 , two NdFeB permanent magnets 9 are embedded and placed on both sides of the accelerated body 2 to complete its force bearing function. As a rare earth permanent magnet material, NdFeB has the advantages of extremely high magnetic energy product, coercive force and high energy density. In the magnetic field generating device 1 , the force of the induced magnetic field is embedded in the two poles of the accelerated body 2 to drive the accelerated body 2 to rotate. It should be noted that when the two NdFeB permanent magnets 9 are placed, the two magnets must ensure that the opposite magnetic poles ensure that the magnetism is opposite, so as to ensure that the overall magnetic flux lines pass through completely. The external thread 11 of the accelerated body 2 cooperates with the internal thread of the spiral groove 3, which plays an important role in converting the axial rotation into the axial linear motion. The external thread 11 of the accelerated body 2 needs to be kept equal to the pitch of the internal thread of the spiral groove 3 , the lead angle Ψ of the thread is equal, and the direction of rotation is the same. The accelerated body 2 is mostly made of PTFE wear-resistant plastic, the wear-resistant plastic plate has high impact strength, and the friction coefficient is between 0.07-0.11, which is close to zero friction. It is resistant to chemical corrosion and can be resistant to corrosion by acids, alkalis, salts and other media.

The spiral groove 3 is mainly responsible for transforming the axial rotation into the axial linear motion. The spiral groove 3 is made of 7075 aluminum alloy. Aluminum alloy has low density, but relatively high strength, which is suitable for this operating environment, high-speed operation, high strength, and anti-magnetic working environment. Its wear resistance and corrosion resistance are enhanced by certain hard anodizing or the incorporation of surface sprayed titanium alloy materials.

The power consumption meter 12 is a WL258 power consumption meter.

As shown in Figure 5, in order to adjust the rotation speed of the magnetic field, the most direct way is to directly change the input AC frequency for speed regulation. The frequency conversion device for alternating current can be completed by using a high-power alternating current inverter. The high-power inverter 10 first converts the alternating current into direct current, and then switches the direct current with electronic components. The frequency can be adjusted within a certain range and become alternating current. The periodic change of the magnetic field generated by the magnetic field generating device 1 directly affects the rotational speed of the magnetic field, so that the rotational speed of the object to be accelerated 2 can be adjusted within a certain range. The main setting parameters are related to the rising angle of the spiral groove 3 and the effective acceleration distance. Through the direct monitoring of the power consumption meter 12, the power consumption parameters of the overall device can be intuitively obtained, and effective and safe adjustments can be made within a corresponding range.

This embodiment provides a non-magnetic accelerated body 2 with NdFeB permanent magnets 9 at both poles and a spiral groove 3 that rotates and rises at a certain helix angle as the basic accessories, and at the same time, the AC input processed by the AC inverter 10 is applied externally. The magnetic field generator 1 generates a rotating magnetic field. After the rotation of the external driving magnetic field begins to generate a phase difference, the relative rotation angle a of the magnetic poles between the accelerated body and the external driving magnetic field changes. The rotation speed of the magnetic field generated by the magnetic field generator 1 gradually increases, and the magnetic driving force is generated under the mutual attraction of the same-sex magnetic poles of the NdFeB permanent magnet 9. When the driving torque is greater than the static friction generated by the accelerated body 2 in the working environment When the resistance torque is reached, the accelerated body 2 starts to rotate. The accelerated body 2 has an external thread 11 inside, and the external thread 11 of the accelerated body 2 cooperates with the internal thread of the spiral groove 3, and the accelerated body 2 converts a part of the axial rotation into Axial linear speed achieves the purpose of accelerating launch. By adjusting the rotation speed and direction of the magnetic field, the speed control and positioning of the accelerated body 2 are adjusted.

The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (7)

1. a kind of Electromagnetic Control helicla flute accelerator, which is characterized in that including：

Field generator for magnetic（1）, for generating alternating magnetic field, inside includes silicon sheet core（4）And it is wound in the silicon steel sheet Iron core（4）The winding of inside（5）；

Helicla flute（3）, it is arranged in the field generator for magnetic along axis（1）It is interior, it is used for accelerated body（2）Rotary speed turn Turn to axial point-to-point speed；

Accelerated body（2）, pass through external screw thread（11）With the helicla flute（3）It matches, symmetrically insertion is provided with two pieces for both sides The opposite Nd-Fe-B permanent magnet of magnetic pole（9）；

Input power device, including single phase alternating current power supply and field generator for magnetic are sequentially connected to by circuit（1）Between it is big Power inverter（10）, power consumption instrument（12）, for realizing that the rotary speed in magnetic field is adjusted by adjusting input AC electric frequency；

The winding（5）It include the main winding being attached using parallel way（6）With starting winding（7）, the starting winding （7）Concatenate a split-phase capacitor（8）, make itself and main winding（6）Electric current in phase approximate 90 degree of difference, the main winding （6）With starting winding（7）90 degree are differed on the spatial position of assembly, spatially generates rotating excitation field, are driven and are accelerated body （2）Rotation.

2. Electromagnetic Control helicla flute accelerator according to claim 1, it is characterised in that：The silicon sheet core（4） It is cylindrical to be arranged in field generator for magnetic（1）It is interior, by thickness with the silicon steel sheet closed assembly pressure of insulation varnished insulation between 0.5mm, piece It tightly forms, silicon sheet core（4）Circumferential inner surface is evenly distributed with straight trough, same winding in an axial direction（5）By concentric position The embedded form for being arranged in rectangular-ambulatory-plane one by one is set to be wrapped in straight trough.

3. Electromagnetic Control helicla flute accelerator according to claim 2, it is characterised in that：The silicon sheet core（4） In adjacent winding（5）Between be provided with gap formed for heat dissipation air duct（41）.

4. Electromagnetic Control helicla flute accelerator according to claim 1, it is characterised in that：The power consumption instrument（12）Using WL258 power consumption instrument.

5. Electromagnetic Control helicla flute accelerator according to claim 1, it is characterised in that：The helicla flute（3）Material Material uses 7075 aluminium alloys.

6. Electromagnetic Control helicla flute accelerator according to claim 1, it is characterised in that：The accelerated body（2）'s Material uses PTFE wear-resistant plastics.

7. Electromagnetic Control helicla flute accelerator according to claim 1, it is characterised in that：The accelerated body（2）'s External screw thread（11）With helicla flute（3）Internal thread screw pitch it is equal, lead angle is equal, and rotation direction is identical.