Multistage acceleration electromagnetic coil fire extinguishing cannon based on delay control and applied to forest fire control

Abstract

The invention discloses a multistage acceleration electromagnetic coil fire extinguishing cannon based on delay control and applied to forest fire control, and belongs to the technical field of electromagnetic cannon. Comprising an electromagnetic coil gun body and a fire extinguishing bomb, a power supply control part is arranged in the gun body, a thermal infrared imager and an automatic aiming system device are arranged at the tail, the bottom is connected with an angle adjusting and rotating mechanism, and the gun body comprises three barrels which are respectively sleeved with a primary coil, a secondary coil and a tertiary coil. The power supply control part comprises a charging circuit, a discharging circuit and a time-delay trigger circuit and can adjust the voltage of the coil. During launching, the voltage of the primary coil is firstly detected and adjusted to generate first pushing force, when the fire extinguishing bomb moves to preset delay time, the secondary coil and the tertiary coil discharge in sequence to accelerate the fire extinguishing bomb, multi-stage acceleration is achieved, the cavity exiting speed of the fire extinguishing bomb reaches more than 100 meters, and the large-load fire extinguishing bomb can be launched. Compared with a traditional mode, the device is small in potential safety hazard, high in launching speed, high in energy utilization efficiency, convenient to operate and good in accuracy, and has important significance in the field of forest fire control.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic guns, and in particular to a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control and applied to forest fire fighting. Background Art

[0002] The electromagnetic fire extinguishing cannon is a device that uses electromagnetic force to launch fire extinguishing bombs to the target location to achieve the fire extinguishing requirements.

[0003] In the prior art, forest fire fighting mainly adopts hydraulic power system, gas power system, chemical energy of gunpowder explosion and aircraft throwing as the power source for launching jets or fire extinguishing bombs. When a pneumatic fire extinguishing gun is fired, high-pressure gas may explode and compressed gas as a driving force will have a certain upper limit on the driving speed of the object, so there are related problems such as short range, small fire extinguishing dosage, low accuracy, and great safety hazards; hydraulic fire extinguishing system will have the problem of relying on external hydraulic energy, and the weight and volume are large, and the response time is slow; rocket fire extinguishing guns use the chemical energy generated by gunpowder explosion as the driving force to launch shells, although the range is long and the efficiency is high, it also has the problem of high cost and high cost, and it has certain limitations due to the use of rockets to launch; the method of dropping fire extinguishing bombs by aircraft, which is commonly used abroad, is also greatly restricted in China due to terrain, cost and other factors.

[0004] Compared with other fire-fighting guns, the electromagnetic coil fire-fighting gun coil gun uses the electromagnetic repulsion between the loading coil and the induction coil to launch the shells. The pulse current generates an instantaneous magnetic field through the loading coil, and the induction coil generates an induced current and a magnetic field. The interaction of the magnetic fields between the two coils generates an electromagnetic force to launch the shells, so that the initial launch velocity is high, the range is long, the accuracy is high, the controllability is good, the response speed is fast, the maneuverability is strong, the launch cost is low, and the launch can be silent, dust-free and light-free, which has broad development prospects. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, which solves the problem of.

[0006] To achieve the above-mentioned purpose, the present invention provides a multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, including an electromagnetic coil gun body and a fire extinguishing bomb, a power supply control component is arranged inside the electromagnetic coil gun body, an infrared thermal imager and an automatic aiming system device are arranged at the tail of the electromagnetic coil gun body, both sides of the bottom of the electromagnetic coil gun body are respectively connected with the pitch angle adjustment component and the rotation mechanism arranged on the rotation angle adjustment component, the rotation angle adjustment component is slidably arranged on the fixed plate, and the bottom of the fixed plate is fixedly connected with a support base.

[0007] Preferably, the electromagnetic coil gun body comprises a first cylinder, a second cylinder and a third cylinder, and the outer surfaces of the first cylinder, the second cylinder and the third cylinder are provided with heat dissipation slots in the center, and the first cylinder, the second cylinder and the third cylinder are respectively provided with primary coils, secondary coils and tertiary coils, the first cylinder and the buffer component are connected by a large clamp, the second cylinder is connected to the first cylinder by a second clamp, and the third cylinder is connected to the second cylinder by a third clamp, and a wire groove is provided at the bottom of the buffer component, the wire groove passes through the weight-attached part of the automatic aiming component and the circular chassis, and a small clamp one is provided on the wire groove.

[0008] Preferably, the power supply control component includes a charging circuit, a discharging circuit and a time-delay trigger circuit, wherein the input end of the charging circuit step-up transformer is connected to a bidirectional thyristor, the output end of the step-up transformer is connected to a rectifier bridge, the rectifier bridge is connected in parallel with the discharge circuit, and the rectifier bridge is electrically connected to a current limiting resistor, a smoothing inductor, a bleeder circuit, a pulse capacitor group, TSC, PID and TVS in sequence, the bleeder circuit is composed of a relay and a bleeder resistor in series, and the pulse capacitor group is composed of three groups of pulse capacitors;

[0009] The rectifier bridge includes a first rectifier diode, a second rectifier diode, a first rectifier thyristor and a second rectifier thyristor; the first rectifier thyristor and the first rectifier diode are connected in series to obtain a first circuit, the second rectifier thyristor and the second rectifier diode are connected in series to obtain a second circuit, and the first circuit and the second circuit are connected in parallel to form a rectifier bridge; the output end of the step-up transformer is respectively connected to the positive electrode of the first rectifier thyristor and the positive electrode of the second rectifier thyristor.

[0010] Preferably, the discharge circuit includes a primary coil circuit, a secondary coil circuit and a tertiary coil circuit, and the primary coil circuit, the secondary coil circuit and the tertiary coil circuit are all electrically connected to the delay trigger circuit, the primary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a primary coil, the secondary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a secondary coil, and the tertiary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a tertiary coil, wherein the freewheeling circuit is composed of two freewheeling diodes.

[0011] Preferably, the delay trigger circuit outputs a signal after calling a function database to set delay parameters through a computer control system.

[0012] Preferably, the angle adjustment component includes a pitch angle adjustment component and a rotation angle adjustment component, the pitch angle adjustment component includes a hydraulic support, one side of the hydraulic support is provided with a motor; the rotation angle adjustment component includes a rotating disk, the bottom of the rotating disk is connected to the rotating motor.

[0013] Preferably, the automatic aiming system device is used to provide the automatic aiming function of the electromagnetic gun, including a laser ranging sensor, an infrared aimer and a laser aimer.

[0014] Preferably, an infrared thermal imager communication interface is provided at the rear of the infrared thermal imager.

[0015] Preferably, the fire extinguishing bomb comprises a fire extinguishing warhead and a fire extinguishing bomb magazine, the fire extinguishing warhead is located at the top of the fire extinguishing bomb magazine, and an armature is arranged at the tail of the fire extinguishing bomb magazine.

[0016] A multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is launched by an electromagnetic launching system, comprising the following steps:

[0017] S1. Detect and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil through the AC voltage transmitter, PLC and circuit board and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil according to the desired voltage value;

[0018] S2. The first magnetic field loaded on the primary coil is calculated by the displayed voltage value. The changing magnetic field causes the armature to generate an induced current, thereby generating an induced magnetic field. The induced magnetic field and the first magnetic field generate a mutually repulsive thrust, which is the first driving force for launching the projectile.

[0019] S3, detecting whether the difference between the first driving force of the shell and the standard value meets the set error limit range; if the first driving force meets the error limit range, the voltage is loaded on the primary coil; if the first driving force exceeds the error limit range, the current voltage value is adjusted, and the step of returning to the detection step to determine whether the difference between the first driving force of the shell and the standard value meets the set error limit range;

[0020] S4, when the fire extinguishing bomb moves for the preset first delay time, it generates an induced magnetic field, so that the shell obtains a second driving force and accelerates again, and at the same time calculates whether the difference between the second-level loading force and the standard value meets the set error limit range;

[0021] S5. If the second-stage loading force is within the error limit range, the voltage is applied to the secondary coil; if the second-stage loading force is beyond the error limit range, the current voltage value is adjusted so that the second-stage loading force calculated by the voltage value is within the error limit range;

[0022] S6. The charging and discharging method of the tertiary coil is the same as that of the secondary coil.

[0023] Therefore, the present invention adopts the above-mentioned structure to apply to a multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, which has the following beneficial effects:

[0024] (1) The present invention uses the principle of electromagnetic coil gun to launch fire extinguishing bombs. Compared with air loading and gunpowder explosion chemical energy launch, it can reduce safety hazards. At the same time, the technology is mature, the launch speed is fast, the energy utilization efficiency is high and the operation is convenient. The launch speed is controlled by adjusting the voltage value loaded on the coil through the charging voltage and the capacitance of the pulse capacitor, and the repetition rate is high.

[0025] (2) The present invention uses a multi-stage acceleration technology to launch the fire extinguishing bomb, so that the speed of the fire extinguishing bomb out of the cavity reaches a speed of more than 100 meters, and at the same time, it can launch a large-load fire extinguishing bomb.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a multi-stage accelerated fire extinguishing gun based on time delay control used in forest fire fighting according to the present invention;

[0028] Figure 2 This is a front view of the overall structure of a barrel of a multi-stage accelerated fire extinguishing gun based on time delay control for forest fire fighting according to the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of a power supply control component in a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting according to the present invention;

[0030] Figure 4 A schematic diagram of a charging circuit in a power supply control component of a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting according to the present invention;

[0031] Figure 5 It is a schematic diagram of a discharge circuit of a power supply control component in a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting according to the present invention;

[0032] Figure 6 It is a schematic diagram of the delayed trigger control principle of a multi-stage accelerated fire extinguishing gun based on delayed control for forest fire fighting according to the present invention;

[0033] Figure 7 A pulse power waveform diagram of a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting according to the present invention;

[0034] Figure 8 A logic diagram of the delayed triggering control of electromagnetic gun firing in a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting according to the present invention;

[0035] Fig. 9 It is a schematic diagram of a sighting device used in a multi-stage accelerated fire-fighting gun based on time delay control for forest fire fighting according to the present invention;

[0036] Fig.10 A schematic diagram of an integrated fire extinguishing bomb used in a multi-stage accelerated fire extinguishing gun based on time delay control for forest fire fighting according to the present invention;

[0037] Reference numerals

[0038] 1. Electromagnetic coil gun body; 2. Infrared thermal imager communication interface; 3. Rotating mechanism; 4. Rotating motor; 5. Automatic aiming system device; 6. Motor; 7. Hydraulic support; 8. Fort base; 9. Fixed plate; 10. Support base; 11. Tertiary coil; 12. Clamp three; 13. Second cylinder; 14. Secondary coil; 15. Clamp two; 16. Primary coil; 17. First cylinder; 18. Buffer component; 19. Cable trough; 20. Automatic aiming component weight part; 21. Third cylinder; 22. Heat dissipation slot; 23. Large clamp; 24. Small clamp one ; 25. Round chassis; 26. Operation button; 27. Operation display screen; 28. Electromagnetic coil gun control power cabinet; 29. ​​Rectifier bridge; 30. Current limiting resistor; 31. Smoothing inductor; 32. Leakage circuit; 33. Relay; 34. Pulse capacitor group; 35. Freewheeling circuit; 36. Resistor; 37. Control switch; 38. Computer control system; 39. Delay trigger circuit; 40. Laser ranging sensor; 41. Laser sight; 42. Infrared sight; 43. Infrared thermal imager; 44. Fire extinguishing warhead; 45. Fire extinguishing bomb magazine; 46. Armature. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0040] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Example

[0042] The present invention provides a multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, wherein the electromagnetic gun body 1 is connected to the rotating mechanism 3 through pin hole transmission, and the gun barrel height is adjusted by the hydraulic support 7; the turret base 8 is on the fixed plate 9, and the bottom of the fixed plate 9 is fixedly connected with the support base 10, wherein the turret base 8 is fixed to the electromagnetic gun body 1 and the hydraulic support 7 by screws, and the gun barrel angle is adjusted by rotating the rotating plate; wherein the primary coil 16 is closely connected to the first cylinder 17 and is provided with a fastening sleeve on the outside to ensure the consistency of the coil in multiple firings, and is also used to give the first power to the fire extinguishing bomb; wherein the secondary coil 14 is connected to the second cylinder 13 and is fixed in the same way as the first cylinder 17, and is delayed triggered by a delay trigger control device, and the tertiary coil 11 is connected and reinforced in the same way as the secondary coil 13, wherein the delay trigger control device is in the power supply control component, communicates with the computer control system 38, and is set by The delayed trigger control time thus delayed trigger discharge accurately controls the second pulse capacitor to discharge the secondary coil 14 and the third pulse capacitor to discharge the tertiary coil 11 to realize multi-stage acceleration; the electromagnetic coil gun body 1 comprises a first barrel 17, a second barrel 13 and a third barrel 21, and a heat dissipation slot 22 is opened at the center of the outer surface of the first barrel 17, the second barrel 13 and the third barrel 21, and the first barrel 17, the second barrel 13 and the third barrel 21 are respectively sleeved with a primary coil 16, a secondary coil 14 and a tertiary coil 11, the first barrel 17 and the buffer component 18 are connected by a large clamp 23, the second barrel 13 is connected to the first barrel 17 by a clamp two 15, and the third barrel 21 is connected to the second barrel 13 by a clamp three 12, and a wire arrangement groove 19 is arranged at the bottom of the buffer component 18, and the wire arrangement groove 19 passes through the automatic aiming component weight part 20 and the circular chassis 25, and a small clamp one 24 is arranged on the wire arrangement groove 19.

[0043] The automatic aiming system device 5 is used to provide the automatic aiming function of the electromagnetic gun, and includes a laser ranging sensor 40 , an infrared aiming device 42 and a laser aiming device 41 .

[0044] The rear part of the infrared thermal imager 43 is provided with an infrared thermal imager communication interface 2 .

[0045] The fire extinguishing bomb comprises a fire extinguishing bullet head 44 and a fire extinguishing bullet magazine 45 . The fire extinguishing bullet head 44 is located at the top of the fire extinguishing bullet magazine 45 , and an armature 46 is arranged at the tail of the fire extinguishing bullet magazine 45 .

[0046] The first pulse capacitor, the second pulse capacitor, and the third pulse capacitor are all in the electromagnetic coil gun control power cabinet 28, and form a discharge circuit with the primary coil 16, the secondary coil 13, and the tertiary coil 11 respectively; the power control component is used to adjust the voltage value loaded on the drive coil so that the primary coil 16 generates a changing first magnetic field. Among them, the drive coil is a solenoid coil, which is wound with copper strips and resin, and is coated with insulation after winding. The two ends of the primary coil 16, the secondary coil 14, and the tertiary coil 11 are connected to the control component through cables; the hydraulic support 7 controls the elevation angle of the barrel through the motor 6;

[0047] Specifically, Figure 1 The present invention provides a multi-stage accelerated fire extinguishing gun based on delay control for forest fire fighting. When in use, the cable of the electromagnetic coil gun control power cabinet 28 is connected to the primary coil 16, the secondary coil 14 and the tertiary coil 11. The charging voltage is set by operating the operation button 26 and the operation display screen 27 of the electromagnetic coil gun control power cabinet 28. At the same time, the voltage signal is transmitted to the computer control system 38 to call the function database, set the delay parameter of the delay trigger control device, and generate a changing magnetic field on the corresponding drive coil by charging and discharging the pulse capacitor, generate an induced current in the armature 46, generate a corresponding induced magnetic field, and use the magnetic field repulsion as the source power for launching, and at the same time promote the launch of the fire extinguishing bomb, and when the armature 46 reaches the delay trigger time set by the delay trigger control device, the timer transmits the trigger signal to the delay trigger control device to trigger the corresponding discharge circuit, thereby accurately controlling the charging and discharging of the coil for accurately controlling the acceleration of the second and third stages of the fire extinguishing bomb;

[0048] At work, if Figure 1-Figure 10 As shown, the electromagnetic coil fire extinguishing gun 1 and its supporting structure are installed on the turret base 8 and fixed by bolts. The angle between the barrel and the ground is controlled by the angle adjustment component. The angle parameter is calculated by the automatic aiming system device 5 according to the position of the target, and the initial velocity required for the launch is determined by the automatic aiming system device 5 at the same time, and then the loaded voltage value is selected; the automatic aiming system device 5 and the infrared thermal imager 43 communicate with the computer through the infrared thermal imager communication interface 2, and the infrared thermal imager system analyzes the thermal radiation and combines the thermal image analysis to identify the imaging elements and calculate the best fire extinguishing point. The electromagnetic coil fire extinguishing gun 1 is installed on the turret base 8, and the electromagnetic coil fire extinguishing gun is rotated by the motor 6 to rotate the rotating disk to achieve the rotation angle, and the automatic aiming system is combined to achieve precise positioning; further, when a fire occurs, the infrared thermal imager 43 will analyze the fire and feedback to the operator, and calculate the best fire extinguishing point. After the operator selects the best fire extinguishing point, the data will be transmitted to the automatic aiming system device 5, and the automatic aiming system device 5 will select the best barrel pitch angle, rotation angle and initial velocity;

[0049] Furthermore, the electromagnetic coil fire extinguishing gun barrel includes a first barrel 17, a second barrel 13, a third barrel 21, a driving coil and an automatic aiming component weight part 20, the fire extinguishing bomb is installed on the buffer part 18, and the automatic aiming component weight part 20 includes the required control components and power supply system; each section of the barrel 17 is provided with a heat dissipation slot 22, which is convenient for dissipating the heat generated by the coil and the barrel after firing the fire extinguishing bomb to avoid burning the coil; the angle adjustment component is located at the lower end of the third barrel 21, and the three-part barrel design is convenient for designing the position of the coil for multi-stage acceleration, and is convenient for the inspection and disassembly of the main barrel.

[0050] Further angle adjustment components include hydraulic supports 7, motors 6, rotating mechanisms 3, turret bases 8, and rotating motors 6. The hydraulic transmission is adjusted by the motor to adjust the elevation angle of the gun barrel. The entire electromagnetic fire extinguishing gun body is fixed on a rotating disk, and the rotating motor 6 drives the turret base 8 to rotate and adjust the rotation angle.

[0051] During operation, the fire extinguishing bomb is installed on the position area, and after the primary coil 16 generates the first magnetic field, an induced current is formed in the armature 46, thereby generating an induced magnetic field, and the fire extinguishing bomb is pushed to be launched through the repulsive thrust of the magnetic field.

[0052] Furthermore, the power supply control component includes a step-up transformer, a rectifier bridge 29, a current limiting resistor 30, a smoothing inductor 31, a pulse capacitor group 34, a freewheeling diode, a bleeder resistor, a relay 33, a bidirectional thyristor and a discharge thyristor; the power supply control component includes a charging circuit, a discharging circuit and a delay trigger circuit 39.

[0053] The power supply control component includes a charging circuit, a discharging circuit and a delay trigger circuit, wherein the charging circuit includes a step-up transformer, a rectifier bridge 29, a current limiting resistor 30, a smoothing inductor 31, a pulse capacitor bank 34, a TCS, a TVS, a bleeder resistor, and a relay 33;

[0054] The bidirectional thyristor is connected to the input terminal of the step-up transformer;

[0055] The output end of the step-up transformer is connected to the rectifier bridge 29;

[0056] The pulse capacitor bank 34 is composed of three groups of pulse capacitors;

[0057] The negative electrode of the current limiting resistor is connected to the positive electrode of the smoothing inductor;

[0058] TCS is connected to the smoothing inductor 31;

[0059] The TVS is connected in parallel with the pulse capacitor bank 34;

[0060] PID is connected with TCS and TVS to receive signals from TCS and TVS;

[0061] The leakage circuit 32 is composed of a relay 33 and a leakage resistor connected in series, and the leakage circuit 32 is connected in parallel with the pulse capacitor group 34. The relay 33 is used to control the conduction of the leakage circuit;

[0062] The positive electrode of the rectifier bridge 29 is connected to the positive electrode of the current limiting resistor 30, and the negative electrode is connected to the negative electrode of the pulse capacitor group 34;

[0063] The positive electrode of the pulse capacitor group 34 is connected to the negative electrode of the smoothing inductor 31, and the negative electrode is connected to the negative electrode of the rectifier bridge 29;

[0064] The charging circuit triggers the bidirectional thyristor to conduct the charging circuit by sending a charging instruction. During the charging process, the voltage and current signals are collected from the TVS and TCS to form feedback. The current signal is first used for PID calculation, and then the PID calculation result is input to the second-level PID control loop to perform PID calculation on the voltage, and finally the result is output as the final value. During the entire charging process, the system determines whether to stop charging and alarm by monitoring whether the voltage signal, current signal and temperature signal are normal.

[0065] Optionally, the rectifier bridge 29 includes a first rectifier diode, a second rectifier diode, a first rectifier thyristor and a second rectifier thyristor;

[0066] The first rectifying thyristor is connected in series with the first rectifying diode to obtain a first circuit, the second rectifying thyristor is connected in series with the second rectifying diode to obtain a second circuit, and the first circuit and the second circuit are connected in parallel to form a rectifying bridge 29;

[0067] The output end of the step-up transformer is connected to the positive electrode of the first rectifying thyristor and the positive electrode of the second rectifying thyristor respectively;

[0068] The discharge circuit includes: a pulse capacitor, a resistor 36, a freewheeling circuit 35, a drive coil, a control switch 37 and a delay trigger circuit 39;

[0069] The freewheeling circuit 35 is composed of two freewheeling diodes connected in parallel;

[0070] The discharge circuit discharges the pulse capacitor, causing the solenoid to form a changing first magnetic field, thereby generating an induced current in the armature, inducing a second magnetic field, and the first magnetic field interacts with the second magnetic field to drive the armature to move.

[0071] The delay trigger circuit 39 is composed of a pulse power supply and a resistor. The delay time parameter set by the computer control system 38 controls the voltage waveform of the pulse power supply, thereby controlling the on and off of the switch.

[0072] The steps for launching by the electromagnetic launch system are as follows:

[0073] S1. Detect and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil through the AC voltage transmitter, PLC and circuit board and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil according to the desired voltage value;

[0074] S2. The first magnetic field loaded on the primary coil is calculated by the displayed voltage value. The changing magnetic field causes the armature to generate an induced current, thereby generating an induced magnetic field. The induced magnetic field and the first magnetic field generate a mutually repulsive thrust, which is the first driving force for launching the projectile.

[0075] S3, detecting whether the difference between the first driving force of the shell and the standard value meets the set error limit range; if the first driving force meets the error limit range, the voltage is loaded on the primary coil; if the first driving force exceeds the error limit range, the current voltage value is adjusted, and the step of returning to the detection step to determine whether the difference between the first driving force of the shell and the standard value meets the set error limit range;

[0076] S4, when the fire extinguishing bomb moves for the preset first delay time, it generates an induced magnetic field, so that the shell obtains a second driving force and accelerates again, and at the same time calculates whether the difference between the second-level loading force and the standard value meets the set error limit range;

[0077] S5. If the second-stage loading force is within the error limit range, the voltage is applied to the secondary coil; if the second-stage loading force is beyond the error limit range, the current voltage value is adjusted so that the second-stage loading force calculated by the voltage value is within the error limit range;

[0078] S6. The charging and discharging method of the tertiary coil is the same as that of the secondary coil.

[0079] The present invention controls the voltage value loaded on the driving coil by a power control component, thereby controlling the magnetic field loaded on the primary coil and the secondary coil, and controls the driving force of the fire extinguishing bomb by controlling the magnetic field on the coil. At the same time, a large initial velocity is given to the fire extinguishing bomb by multi-stage acceleration, so that the fire extinguishing bomb can reach an ideal muzzle velocity, thereby improving the firing accuracy of the fire extinguishing bomb, which has profound significance in forest fire fighting; wherein each level of driving coil and the next level of driving coil maintain a set distance, a position area for fixing the shell is arranged above the cushioning area, and the shell is installed on the position area during operation, and when a pulse current is passed into the primary coil by the power control component, the primary coil generates a changing first magnetic field, and according to Faraday's law of electromagnetic induction, the armature generates an induced current accordingly, and according to the Ampere force principle, the armature obtains acceleration, thereby driving the fire extinguishing bomb to be fired at a high speed, and this process is usually implemented using a pulse current to generate a transient high-intensity magnetic field pulse, thereby accelerating the object. By using electromagnetic loading as a power supply method, a large mass load can be launched, and the energy utilization efficiency is high; when the shell exits from the primary coil, the delay trigger control device calls the delay trigger function database through the set charging voltage value, thereby obtaining the delay time of the second and third levels. When the timer of the delay trigger control device reaches the set delay time, the delay trigger control device sends a trigger control signal, and the corresponding drive coil triggers discharge to generate a corresponding magnetic field to achieve multi-stage acceleration; in addition, the action force in the force acts on the shell, and the reaction force acts on the buffer component, so that when working, the shell and the buffer component are simultaneously subjected to force, so that the force of the entire device is balanced, and the stability of the device is improved; and, compared with pneumatic launch, the electromagnetic coil gun used by the present invention to launch the fire extinguishing bomb is not affected by uneven airflow and unstable airflow, and does not require a high-pressure air storage chamber. At the same time, compared with gunpowder explosion launch, it is relatively cheap and has good controllability and high safety, while achieving a higher energy utilization efficiency.

[0080] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes and adaptations in the implementation methods and application scopes of specific works. In summary, the content of this specification should not be understood as limiting the present invention.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, characterized in that: The electromagnetic coil gun body comprises an electromagnetic coil gun body and a fire extinguishing bomb. A power control component is arranged inside the electromagnetic coil gun body. An infrared thermal imager and an automatic aiming system device are arranged at the tail of the electromagnetic coil gun body. Both sides of the bottom of the electromagnetic coil gun body are respectively connected with a pitch angle adjustment component and a rotating mechanism arranged on the rotation angle adjustment component. The rotating mechanism is electrically connected with the rotating motor. The rotation angle adjustment component is slidably arranged on a fixed plate. The bottom of the fixed plate is fixedly connected with a supporting base.

2. According to claim 1, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The electromagnetic coil gun body comprises a first cylinder, a second cylinder and a third cylinder. The outer surfaces of the first cylinder, the second cylinder and the third cylinder are all provided with heat dissipation slots in the center. The first cylinder, the second cylinder and the third cylinder are respectively provided with primary coils, secondary coils and tertiary coils. The first cylinder is connected to the buffer component by a large clamp, the second cylinder is connected to the first cylinder by a second clamp, and the third cylinder is connected to the second cylinder by a third clamp. A wire groove is provided at the bottom of the buffer component, the wire groove passes through the weight-attached part of the automatic aiming component and the circular chassis, and a small clamp one is provided on the wire groove.

3. According to claim 1, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The power supply control component includes a charging circuit, a discharging circuit and a time-delay triggering circuit, wherein the input end of the step-up transformer of the charging circuit is connected to the bidirectional thyristor, the output end of the step-up transformer is connected to the rectifier bridge, the rectifier bridge is connected in parallel with the discharging circuit, and the rectifier bridge is electrically connected to the current limiting resistor, the smoothing inductor, the bleeder circuit, the pulse capacitor group, the TSC, the PID and the TVS in sequence, the bleeder circuit is composed of a relay and a bleeder resistor in series, and the pulse capacitor group is composed of three groups of pulse capacitors; The rectifier bridge includes a first rectifier diode, a second rectifier diode, a first rectifier thyristor and a second rectifier thyristor; the first rectifier thyristor and the first rectifier diode are connected in series to obtain a first circuit, the second rectifier thyristor and the second rectifier diode are connected in series to obtain a second circuit, and the first circuit and the second circuit are connected in parallel to form a rectifier bridge; the output end of the step-up transformer is respectively connected to the positive electrode of the first rectifier thyristor and the positive electrode of the second rectifier thyristor.

4. According to claim 3, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The discharge circuit includes a primary coil circuit, a secondary coil circuit and a tertiary coil circuit. The primary coil circuit, the secondary coil circuit and the tertiary coil circuit are all electrically connected to the delay trigger circuit. The primary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a primary coil. The secondary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a secondary coil. The tertiary coil circuit is composed of a freewheeling circuit, a resistor, a control switch and a tertiary coil, wherein the freewheeling circuit is composed of two freewheeling diodes.

5. According to claim 4, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The delay trigger circuit outputs a signal after setting the delay parameters through the computer control system calling the function database.

6. According to claim 1, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The angle adjustment component includes a pitch angle adjustment component and a rotation angle adjustment component. The pitch angle adjustment component includes a hydraulic support, one side of the hydraulic support is provided with a motor; the rotation angle adjustment component includes a rotating disk, the bottom of the rotating disk is connected to the rotating motor.

7. According to claim 1, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting is characterized in that: The automatic aiming system device is used to provide automatic aiming function for electromagnetic guns, including laser ranging sensors, infrared aimers and laser aimers.

8. The multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting according to claim 1 is characterized in that: An infrared thermal imager communication interface is arranged at the tail of the infrared thermal imager.

9. According to claim 1, a multi-stage accelerating electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting, characterized in that: The fire extinguishing bomb comprises a fire extinguishing warhead and a fire extinguishing bomb magazine. The fire extinguishing warhead is located at the top of the fire extinguishing bomb magazine, and an armature is arranged at the tail of the fire extinguishing bomb magazine.

10. The multi-stage acceleration electromagnetic coil fire extinguishing gun based on delay control for forest fire fighting according to any one of claims 1 to 9 is launched by using an electromagnetic launching system, characterized in that: The following steps are involved: S1. Detect and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil through the AC voltage transmitter, PLC and circuit board and adjust the voltage loaded on the primary coil, secondary coil and tertiary coil according to the desired voltage value; S2. The first magnetic field loaded on the primary coil is calculated by the displayed voltage value. The changing magnetic field causes the armature to generate an induced current, thereby generating an induced magnetic field. The induced magnetic field and the first magnetic field generate a mutually repulsive thrust, which is the first driving force for launching the projectile. S3, detecting whether the difference between the first driving force of the shell and the standard value meets the set error limit range; if the first driving force meets the error limit range, the voltage is loaded on the primary coil; if the first driving force exceeds the error limit range, the current voltage value is adjusted, and the step of returning to the detection step to determine whether the difference between the first driving force of the shell and the standard value meets the set error limit range; S4, when the fire extinguishing bomb moves for the preset first delay time, it generates an induced magnetic field, so that the shell obtains a second driving force and accelerates again, and at the same time calculates whether the difference between the second-level loading force and the standard value meets the set error limit range; S5. If the second-stage loading force is within the error limit range, the voltage is applied to the secondary coil; If the second-level loading force exceeds the error limit, the current voltage value is adjusted so that the second-level loading force calculated by the voltage value is within the error limit; S6. The charging and discharging method of the tertiary coil is the same as that of the secondary coil.

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