CN212277088U - Electromagnetic pulse generator - Google Patents

Abstract

The application discloses electromagnetic pulse generator belongs to electromagnetic pulse generator technical field, its technical scheme main points are electromagnetic pulse generator, including the return circuit that discharges and the trigger switch of connection on the return circuit that discharges, trigger switch includes vacuum interrupter and power device, vacuum interrupter includes the seal shell, the moving contact, static contact and movable guide bar, static contact and moving contact all are located the seal shell and coaxial relative, movable guide bar and moving contact fixed connection just run through the seal shell, power device includes that the electromagnetism launches the subassembly, launch bottom plate and fixed connection and launch the spliced pole on the bottom plate, spliced pole fixed connection is at the one end that the static contact was kept away from to the movable guide bar, can drive the movable guide bar through the electromagnetism and be close to or keep away from the static contact. The effects of improving the working reliability of the trigger switch and optimizing the working performance of the electromagnetic pulse generator are achieved.

Description

Electromagnetic pulse generator

Technical Field

The application relates to the field of electromagnetic pulse generators, in particular to an electromagnetic pulse generator.

Background

The generation of strong current pulse is critical to many sciences and engineering, including exciting strong laser, driving microwave source, etc. the present widely used large current electromagnetic pulse generator has capacitor bank type, energy storage inductor, accumulator, rotating electric machine, etc.

As shown in fig. 1, the related art electromagnetic pulse generator includes a charging power supply, a current limiting resistor, a trigger switch, and an energy storage capacitor, wherein one end of the current limiting resistor is connected to a positive electrode of the charging power supply, the trigger switch is connected to the current limiting resistor in series, the trigger switch is connected to a load in series, one end of the energy storage capacitor is connected to a connection node between the current limiting resistor and the trigger switch in series, and the other end of the energy storage capacitor is connected to a negative electrode of the charging power supply, and the trigger switch is usually a thyristor triggered by a thyristor trigger circuit.

The prior art is not sufficient in that: however, at present, the working voltage and the working current of a single semiconductor device are limited, and the power loss of a power device is large, so that the output reliability of the electromagnetic pulse generator may be affected.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, this application provides an electromagnetic pulse generator, reaches the effect that improves trigger switch's operational reliability, optimizes electromagnetic pulse generator working property.

The technical purpose of the application is realized by the following technical scheme:

the utility model provides an electromagnetic pulse generator, including the return circuit of discharging and connect the trigger switch on the return circuit of discharging, trigger switch includes vacuum interrupter and power device, vacuum interrupter includes the sealed shell, the moving contact, static contact and moving guide bar, static contact and moving contact all are located the sealed shell and coaxial relative, move guide bar and moving contact fixed connection and run through the sealed shell, power device includes that the electromagnetism launches the subassembly, launch bottom plate and fixed connection the spliced pole on launching the bottom plate, spliced pole fixed connection moves the guide bar and keeps away from the one end of static contact, it can drive to move the guide bar and be close to or keep away from the static contact to launch the subassembly through the electromagnetism.

By adopting the technical scheme, the vacuum arc extinguish chamber is a medium-high voltage power switch, the medium-high voltage circuit can rapidly extinguish arc and inhibit current after the power supply is cut off through the excellent insulating property of vacuum in the sealed shell, and the current in the loop where the vacuum arc extinguish chamber is located can be rapidly cut off at the moment of disconnection of the vacuum arc extinguish chamber, so that the vacuum arc extinguish chamber has excellent high-current breaking capacity, the working reliability of the trigger switch under high-voltage high current is improved, the energy loss of a circuit is small when the vacuum moving contact is connected with the static contact, meanwhile, the movable guide rod is driven to move at high speed through the electromagnetic ejection assembly, the vacuum arc extinguish chamber can be controlled to be rapidly closed or disconnected, the delay and jitter conditions of the trigger switch are improved, and the working performance of.

Preferably, the electromagnetic ejection assembly comprises an upper coil, a lower coil, a first power supply, a second power supply, two shot-shooting balls and a guide mechanism, the upper coil is powered by the first power supply, the lower coil is powered by the second power supply, the guide mechanism guides the ejection bottom plate to move along the axis direction of the movable guide rod, the axes of the upper coil and the lower coil are positioned on the same straight line, the ejection bottom plate is positioned between the axes of the upper coil and the lower coil, the two shot-shooting balls are fixedly connected to the ejection bottom plate and positioned on two sides of the ejection bottom plate respectively, the two shot-shooting balls are opposite to the upper coil and the lower coil respectively, the shot-shooting balls opposite to the upper coil can be driven to move towards the direction close to the lower coil after the upper coil is powered on, and the shot-shooting balls with the lower coil can be driven to move towards the direction close to the upper coil after the lower coil is powered on.

By adopting the technical scheme, when the upper coil is connected into the first power supply, the Lorentz force generated by the electromagnetic field between the upper coil and the shot launched by the upper coil opposite to the upper coil drives the shot launched towards the direction close to the lower coil, the launching bottom plate drives the movable guide rod on the connecting column to move at high speed, and the movable contact is far away from the static contact, so that the function of controlling the vacuum arc extinguish chamber to be quickly disconnected is realized; when the lower coil is connected with the second power supply, the Lorentz force generated by the electromagnetic field force between the lower coil and the launching pill opposite to the lower coil moves the launching pill at a high speed towards the direction close to the upper coil, so that the movable contact is quickly abutted against the static contact, and the function of controlling the vacuum arc extinguish chamber to be quickly closed is realized.

Preferably, the protective housing is covered on the outer sides of the vacuum arc extinguish chamber and the power device, the guide mechanism is an upper coil fixing seat, the upper coil fixing seat is fixedly arranged in the protective housing, the upper coil is fixedly arranged on the upper coil fixing seat, and the connecting column penetrates through the upper coil fixing seat and is in plug-in fit with the upper coil fixing seat.

Through adopting above-mentioned technical scheme, when the interior circular telegram of going up coil or lower coil, because spliced pole and last coil fixing base grafting cooperation, consequently make the ejection bottom plate can only move along the axis direction of moving the guide bar, move the guide bar and be difficult for moving the end cover board and take place the wrench movement, and then make the guide bar of moving can drive the moving contact high-speed motion and with the static contact butt or drive moving contact and static contact quick separation.

Preferably, the discharge circuit sets up many, and vacuum interrupter sets up a plurality ofly, and a plurality of vacuum interrupter are connected respectively on many discharge circuit, and power device is used for controlling opening and close of a plurality of vacuum interrupter.

By adopting the technical scheme, the plurality of discharging loops are arranged, so that the current value on each discharging loop is not easy to be overlarge, the current-limiting protection effect is realized on the circuit, and meanwhile, the total current value output by the plurality of discharging loops can reach the large current value required by the load.

Preferably, the number of the electromagnetic ejection assemblies, the number of the ejection bottom plates and the number of the connecting columns are respectively the same, each connecting column is fixedly connected with the movable guide rod on each discharge loop, and the plurality of movable guide rods are driven to synchronously approach or synchronously leave away from the fixed contact through synchronous actions of the plurality of electromagnetic ejection assemblies.

By adopting the technical scheme, the plurality of electromagnetic ejection assemblies synchronously move to drive the plurality of movable guide rods to be synchronously close to or away from the static contact, so that the function of controlling the synchronous conduction or synchronous disconnection of the plurality of discharge loops is achieved, when one electromagnetic ejection assembly is damaged, the electromagnetic pulse generator still can output large current, and the working stability of the pulse generator is improved.

Preferably, the electromagnetic ejection assembly and the ejection bottom plate are respectively provided with a single one, the connecting columns are arranged along the ejection bottom plate, and the connecting columns are fixedly connected with the movable guide rods of the vacuum arc-extinguishing chambers respectively.

Through adopting above-mentioned technical scheme, when launching the drive of bottom plate electromagnetism ejection assembly down, a plurality of spliced poles drive a plurality of movable guide bar synchronous motion for vacuum interrupter on many the circuit that discharges opens or closes in step, and then make on many the circuit that discharges difficult for leading to voltage and electric current transient state distribution uneven because of the opening time difference, make impulse generator can tend to the stable output required current value in the opening moment, and can cut off the output in all the circuit that discharges in step in the closing moment.

Preferably, the seal shell includes an outer insulation shell, a static end cover plate and a moving end cover plate, the static end cover plate and the moving end cover plate are respectively and fixedly disposed at two ends of the outer insulation shell in the axial direction, the static contact is fixedly connected with a static guide rod, the static guide rod penetrates through the static end cover plate, the static guide rod is connected with an adjusting mechanism, the static contact can be driven to be close to or far away from the moving contact through the adjusting mechanism, and a second corrugated pipe is fixedly connected between the static contact and the static end cover plate.

By adopting the technical scheme, the static contact and the moving contact can be ablated by electric arcs in the using process, so that the thicknesses of the static contact and the moving contact can be reduced, and further the contact pressure between the moving contact and the static contact can be reduced; meanwhile, because the fixed contacts in the vacuum arc extinguishing chambers, namely the opening distances between the fixed contacts and the movable contacts, may have slight differences, when a plurality of movable guide rods may move synchronously, the conduction time of a plurality of vacuum arc extinguishing chambers may have slight differences, and the opening distances between the fixed contacts and the movable contacts of the plurality of vacuum arc extinguishing chambers are adjusted to be consistent through the adjusting mechanism, so that the plurality of discharge circuits can be controlled to be conducted simultaneously.

Preferably, the adjusting mechanism comprises an adjusting screw and an adjusting nut, the adjusting screw is fixedly connected with the static guide rod, the adjusting screw is in sliding fit with the protective shell along the axis direction of the adjusting screw, the adjusting nut is in threaded connection with the adjusting screw, and the adjusting nut is in rotating connection with the protective shell.

By adopting the technical scheme, when the position of the static contact is adjusted, the adjusting nut is rotated, and the adjusting screw rod is in sliding fit with the protective shell, so that the adjusting screw rod can only move along the axis direction of the adjusting screw rod, the adjusting screw rod drives the upper end insulator and the static guide rod to move, and the effect of adjusting the distance between the static contact and the moving contact is achieved.

Preferably, an upper end insulator is fixedly connected between the adjusting screw rod and the static guide rod.

Through adopting above-mentioned technical scheme, be difficult for electrocuteeing when setting up the position that upper end insulator made staff adjust quiet guide bar, improved staff's operational safety.

To sum up, the utility model discloses following beneficial effect has:

1. by adopting the structure of the vacuum arc-extinguishing chamber, the electromagnetic ejection assembly, the ejection bottom plate and the connecting column, the function of improving the working reliability of the trigger switch in the discharge loop is realized;

2. by adopting the structure that the connecting column is in sliding connection with the guide hole, the function that the movable guide rod is not easy to twist relative to the movable end cover plate in the moving process is realized;

3. by adopting the structure of the adjusting mechanism, the function of adjusting the distance between the fixed contact and the moving contact is realized.

Drawings

FIG. 1 is a schematic diagram of a related art electromagnetic pulse generator;

FIG. 2 is a circuit diagram of a discharge circuit implemented in the present application;

fig. 3 is a schematic structural diagram of a trigger switch according to a first embodiment of the present application;

FIG. 4 is a circuit diagram of a second discharge loop implemented in the present application;

FIG. 5 is a schematic diagram of a three-shot switch embodying the present application;

FIG. 6 is a three-dimensional schematic view of a protrusion adjustment mechanism;

fig. 7 is a three-dimensional schematic view of a protrusion adjustment mechanism.

Reference numerals: 1. a protective shell; 11. a slider; 2. a vacuum arc-extinguishing chamber; 21. sealing the shell; 211. an outer insulating case; 212. a stationary end cover plate; 213. a movable end cover plate; 22. a moving contact; 23. static contact; 24. a movable guide rod; 25. a stationary guide bar; 251. an upper end insulator; 26. a first bellows; 27. a second bellows; 3. a power plant; 31. an electromagnetic ejection assembly; 311. an upper coil; 312. a lower coil; 313. launching the projectile; 3131. a launch canister; 3132. a transmitting coil; 314. an upper coil fixing seat; 3141. a guide hole; 32. ejecting the bottom plate; 33. connecting columns; 331. a lower end insulator; 4. an adjustment mechanism; 41. adjusting the screw rod; 411. a chute; 42. and adjusting the nut.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The first embodiment is as follows:

an electromagnetic pulse generator, refer to fig. 2 and 3, includes a discharge loop and a trigger switch connected to the discharge loop, the trigger switch includes a vacuum arc-extinguishing chamber 2 and a power device 3 for controlling the opening and closing of the vacuum arc-extinguishing chamber 2, the vacuum arc-extinguishing chamber 2 includes a sealed housing 21, a movable contact 22, a stationary contact 23, a movable guide rod 24 and a first bellows 26, the sealed housing 21 includes an outer insulating housing 211, a stationary end cover 212 and a movable end cover 213, the stationary end cover 212 and the movable end cover 213 are respectively and fixedly disposed at two ends of the outer insulating housing 211 in the axial direction, the stationary contact 23 and the movable contact 22 are both disposed in the sealed housing 21 and coaxially opposite, the stationary contact 23 is connected to the stationary end cover 212, the movable contact 22 is fixedly connected to the movable guide rod 24, the movable guide rod 24 penetrates through the movable end cover 213, the stationary contact 23 and the movable contact 22 are respectively an input end and an output end of the vacuum arc-extinguishing chamber 2, the first bellows 26 is fixedly connected between the movable guide rod 24 and the side wall of the movable end cover plate 213 near the stationary end cover plate 212. The movable contact 22 is driven to abut against the fixed contact 23 by driving the movable guide rod 24, so that the vacuum arc-extinguishing chamber 2 is in a conducting state, the first corrugated pipe 26 plays a role in sealing, the movable contact 22 is far away from the fixed contact 23, and the vacuum arc-extinguishing chamber 2 is in a cut-off state; the vacuum arc-extinguishing chamber 2 is suitable for a high-voltage circuit, the excellent vacuum insulation property in the sealing shell 21 enables the medium-high voltage circuit to rapidly extinguish arc and inhibit current after a power supply is cut off, the current in a loop where the vacuum arc-extinguishing chamber 2 is located can be rapidly cut off at the moment when the movable contact 22 and the static contact 23 are disconnected, the vacuum arc-extinguishing chamber 2 has excellent high-current breaking capacity, and the energy loss of the discharge circuit is small when the movable contact 22 and the static contact 23 are connected, so that the working reliability of the trigger switch under high-voltage high current is improved.

Referring to fig. 3, the dynamic power device 3 includes an electromagnetic ejection assembly 31, an ejection base plate 32 and a connection column 33 fixedly connected to the ejection base plate 32, the connection column 33 is fixedly connected to one end of the dynamic guide rod 24 away from the static contact 23, the electromagnetic ejection assembly 31 includes an upper coil 311, a lower coil 312, a first power supply, a second power supply, two ejection pellets 313 and a guide mechanism, the ejection pellets 313 include an ejection barrel 3131 and an ejection coil 3132 wound outside the ejection barrel 3131, the two ejection barrels 3131 are fixedly connected to the ejection base plate 32 and respectively located on two sides of the ejection base plate 32, the upper coil 311 is powered by the first power supply, the lower coil 312 is powered by the second power supply, the first power supply and the second power supply both employ pulse current generators, the axes of the upper coil 311 and the lower coil 312 are located on the same straight line, the base plate ejection 32 is located between the axial directions of the upper coil 311 and the lower coil 312, the two launching balls 313 are coaxially opposite to the upper coil 311 and the lower coil 312 respectively, the end portions of the launching balls 313 can extend into the upper coil 311 or the lower coil 312, the connecting column 33 can be made of an insulating material or a lower end insulator 331 is fixedly connected between the movable guide rod 24 and the connecting column 33, and the second mode is adopted in the embodiment. When the upper coil 311 is connected to the first power supply, the lorentz force generated by the electromagnetic field between the upper coil 311 and the launching pellet 313 below the upper coil 311 drives the launching pellet 313 to approach the lower coil 312, the launching bottom plate 32 drives the movable guide rod 24 on the connecting column 33 to move at a high speed, and the movable contact 22 is far away from the static contact 23, so that the function of controlling the vacuum arc-extinguishing chamber 2 to be rapidly disconnected is realized; when the lower coil 312 is connected to the second power supply, the lorentz force generated by the electromagnetic field force between the lower coil 312 and the launching pellet 313 above the lower coil 312 moves the launching pellet 313 at a high speed in a direction close to the upper coil 311, so that the movable contact 22 is rapidly abutted to the fixed contact 23, and the function of controlling the vacuum arc-extinguishing chamber 2 to be rapidly closed is realized. The electromagnetic ejection assembly 31 can also adopt electromagnetic driving modes of other forms of electromagnetic cannons, such as forms of multiple electromagnetic ejections (namely electromagnetic cannons) of a synchronous induction coil cannon, an asynchronous induction coil cannon and the like, the ejection projectile 313 can be set according to the forms of different electromagnetic cannons, and the first power supply and the second power supply can output direct current or alternating current according to the power supply mode of the electromagnetic cannon driving coil.

Referring to fig. 3, the protective housing 1 is covered outside the vacuum interrupter 2 and the power device 3, the guiding mechanism is the fixed last coil fixing seat 314 that sets up in the protective housing 1, the last coil 311 is fixed to be set up in the one side that last coil fixing seat 314 is close to lower coil 312, lower coil 312 fixed connection is on the inside wall of protective housing 1, guiding hole 3141 has been seted up on last coil fixing seat 314, spliced pole 33 passes last coil fixing seat 314 and pegs graft the cooperation with guiding hole 3141, the cross-section of spliced pole 33 can be rectangle or triangle-shaped, so that when spliced pole 33 drives to move guide bar 24 and removes, it is difficult for sealed shell 21 to take place the wrench movement to move guide bar 24, and then be difficult for damaging first bellows 26. When alternating current is introduced into the upper coil 311 or the lower coil 312, the connecting column 33 is in insertion fit with the upper coil fixing seat 314, so that the ejection bottom plate 32 can only move along the axis direction of the upper coil 311, the movable guide rod 24 is not easy to twist relative to the movable end cover plate 213, and the movable guide rod 24 can drive the movable contact 22 to move at a high speed and abut against the fixed contact 23 or drive the movable contact 22 to be quickly separated from the fixed contact 23.

The implementation principle of the first embodiment is as follows:

when the vacuum arc-extinguishing chamber 2 is switched on, alternating current is introduced to the lower coil 312 through the second power supply, and the Lorentz force generated by the electromagnetic field force between the lower coil 312 and the launching pill 313 above the lower coil moves the launching pill 313 at a high speed in the direction close to the upper coil 311, so that the movable contact 22 is quickly abutted to the static contact 23; when the vacuum arc-extinguishing chamber 2 is disconnected, the second power supply is disconnected, alternating current is introduced into the upper coil 311 through the first power supply, the Lorentz force generated by the electromagnetic field between the upper coil 311 and the launching pill 313 below the upper coil 311 drives the launching pill 313 to the direction close to the lower coil 312, the launching bottom plate 32 drives the movable guide rod 24 on the connecting column 33 to move at high speed, and the movable contact 22 is made to be far away from the static contact 23.

Example two:

the difference between the present embodiment and the first embodiment is that, referring to fig. 4, a plurality of discharge loops are provided, a plurality of vacuum arc-extinguishing chambers 2 are respectively connected in the plurality of discharge loops, a plurality of electromagnetic ejection assemblies 31, a plurality of ejection base plates 32 and a plurality of connection columns 33 are respectively provided in the same number, each connection column 33 is respectively and fixedly connected with the movable guide rod 24 on each discharge loop, and the plurality of movable guide rods 24 are driven to synchronously approach or synchronously leave the stationary contact 23 through the synchronous action of the plurality of electromagnetic ejection assemblies 31. Set up many discharge circuit, make the current value on every discharge circuit be difficult for too big, play the current-limiting protection effect to the circuit, make many discharge circuit output's total current value can reach the required big current value of load simultaneously, a plurality of electromagnetism launch subassembly 31 synchronous motion and move guide bar 24 with driving a plurality of and be close to or keep away from static contact 23 in step, reach the function that control many discharge circuit synchronous switch-on or synchronous disconnection, when certain electromagnetism launches subassembly 31 wherein and appear damaging, electromagnetic pulse generator still can output heavy current, consequently, pulse generator's job stabilization nature has been promoted.

The implementation principle of the second embodiment is as follows:

when a plurality of discharging and discharging loops are switched on simultaneously, the plurality of lower coils 312 are switched on with alternating current emitted by the second power supply at the same time, the shot on the plurality of ejection bottom plates 32 moves towards the direction close to the upper coil 311 under the action of the electromagnetic field force generated by the lower coils 312, and simultaneously, the plurality of movable guide rods 24 are driven to synchronously abut against the plurality of static contacts 23 respectively, and the plurality of vacuum arc-extinguishing chambers 2 are synchronously switched on; when the plurality of discharging loops are disconnected, the plurality of upper coils 311 are simultaneously connected with the alternating current generated by the first power supply, the shot on the plurality of ejection base plates 32 moves towards the direction close to the lower coil 312 under the action of the electromagnetic field generated by the upper coils 311, the plurality of movable guide rods 24 are simultaneously driven to be away from the plurality of static contacts 23, and the plurality of vacuum arc-extinguishing chambers 2 are synchronously stopped.

Example three:

the difference between the present embodiment and the second embodiment is that, referring to fig. 5, by providing a plurality of discharging loops, an effect of providing a low-voltage large-current high-power pulse power supply can be achieved, but due to the delay of conduction of the trigger switch (i.e. the vacuum interrupter 2) caused by its own characteristics, there may exist a situation where one vacuum interrupter 2 is first conducted and the following vacuum interrupter 2 is not yet conducted, which causes too large current to flow through the first conducted vacuum interrupter 2, the vacuum interrupter 2 is very easily damaged, and no current passes through the other vacuum interrupters 2, therefore, the power device 3 adopted in the present embodiment includes a single electromagnetic ejection assembly 31, a single ejection base plate 32 and a plurality of connection posts 33 fixedly connected to the ejection base plate 32, and the plurality of connection posts 33 are respectively and fixedly connected to the plurality of movable guide rods 24 of the plurality of vacuum. When the ejection bottom plate 32 moves under the driving of the upper coil 311 or the lower coil 312, the plurality of connecting columns 33 drive the plurality of movable guide rods 24 to move synchronously, so that voltage and current transient distribution on the plurality of discharge loops is not easy to cause due to different opening times, the pulse generator can quickly and stably output a required value at the opening moment, circuit power loss is not easy to cause, and output of all discharge loops can be synchronously cut off at the closing moment.

Because the parameters of the plurality of vacuum arc-extinguishing chambers 2 may have differences, and further the conduction time of the plurality of vacuum arc-extinguishing chambers 2 may still have slight differences when the plurality of movable guide bars 24 move synchronously, in order to enable the plurality of vacuum arc-extinguishing chambers 2 to be opened and closed synchronously, and further control the plurality of discharge loops to be turned on or off simultaneously, so as to improve the output stability of the electromagnetic pulse generator, referring to fig. 5, a static contact 23 adopted in the application is fixedly connected with a static guide bar 25, the static guide bar 25 penetrates through a static end cover plate 212, the static guide bar 25 is connected with an adjusting mechanism 4, the static contact 23 can be driven to be close to or far away from a movable contact 22 through the adjusting mechanism 4, and a second corrugated pipe 27 is fixedly connected between the static. Because the static contact 23 and the movable contact 22 are ablated by electric arc in the using process, the thicknesses of the static contact 23 and the movable contact 22 are reduced, and further the contact pressure between the movable contact 22 and the static contact 23 is reduced, the opening distance between the static contact 23 and the movable contact 22 can be adjusted through the adjusting mechanism 4, and the position of the static contact 23 is adjusted, so that the contact pressure between the movable contact 22 and the static contact 23 is maintained; meanwhile, the adjusting mechanism 4 is used for adjusting the distance between the plurality of fixed contacts 23 of the plurality of vacuum arc-extinguishing chambers 2 and the movable contact 22 to be consistent, and when the plurality of movable guide rods 24 move synchronously, the plurality of discharge loops can be controlled to be conducted simultaneously.

Referring to fig. 6 and 7, the adjusting mechanism 4 includes an adjusting screw 41 and an adjusting nut 42, the adjusting screw 41 is fixedly connected to the stationary guide rod 25, an upper end insulator 251 is fixedly connected between the adjusting screw 41 and the stationary guide rod 25, a sliding groove 411 is formed in the outer peripheral wall of the adjusting screw 41, the sliding groove 411 is arranged along the axial direction of the adjusting screw 41, a sliding block 11 is fixedly arranged on the protective shell 1, the sliding groove 411 and the sliding block 11 are in sliding fit along the axial direction of the adjusting screw 41, the adjusting nut 42 is in threaded connection with the adjusting screw 41, and the adjusting nut 42 is rotatably connected to the protective shell 1. When the position of the static contact 23 is adjusted, the adjusting nut 42 is rotated, and the adjusting screw 41 is in sliding fit with the protective shell 1, so that the adjusting screw 41 can only move along the axis direction of the adjusting screw 41, and the adjusting screw 41 drives the upper end insulator 251 and the static guide rod 25 to move, thereby achieving the effect of adjusting the distance between the static contact 23 and the movable contact 22; through the arrangement of the upper end insulator 251, the electric shock is not easy to occur when the worker adjusts the position of the static guide rod 25, and the operation safety of the worker is improved.

The implementation principle of the third embodiment is as follows:

when a plurality of discharging loops are switched on simultaneously, alternating current generated by a second power supply is introduced into the lower coil 312, the shot generated on the lower side of the ejection bottom plate 32 moves towards the direction close to the upper coil 311 under the action of electromagnetic field force generated by the lower coil 312, and simultaneously, the movable guide rods 24 are driven to synchronously abut against the fixed contacts 23 respectively, and the vacuum arc-extinguishing chambers 2 are synchronously switched on; when the plurality of discharging loops are disconnected, the upper coil 311 is connected with the alternating current generated by the first power supply, the projectile on the upper side of the ejection bottom plate 32 moves towards the direction close to the lower coil 312 under the action of the electromagnetic field generated by the upper coil 311, the plurality of movable guide rods 24 are driven to be away from the plurality of static contacts 23 simultaneously, and the plurality of vacuum arc-extinguishing chambers 2 are synchronously stopped.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. An electromagnetic pulse generator, characterized by: including the return circuit that discharges and the trigger switch of connection on the return circuit that discharges, trigger switch includes vacuum interrupter (2) and power device (3), vacuum interrupter (2) are including sealed shell (21), moving contact (22), static contact (23) and move guide bar (24), static contact (23) and moving contact (22) all are located sealed shell (21) and coaxial relative, move guide bar (24) and moving contact (22) fixed connection and run through sealed shell (21), power device (3) launch subassembly (31) including the electromagnetism, launch spliced pole (33) on bottom plate (32) with fixed connection, spliced pole (33) fixed connection is in moving guide bar (24) and keeping away from the one end of static contact (23), launch subassembly (31) through the electromagnetism and can drive and move guide bar (24) and be close to or keep away from static contact (23).

2. An electromagnetic pulse generator as claimed in claim 1, wherein: the electromagnetic ejection assembly (31) comprises an upper coil (311), a lower coil (312), a first power supply, a second power supply, two ejection shots (313) and a guide mechanism, wherein the upper coil (311) is powered by the first power supply, the lower coil (312) is powered by the second power supply, the guide mechanism plays a role in guiding the movement of the ejection bottom plate (32) along the axial direction of the movable guide rod (24), the axes of the upper coil (311) and the lower coil (312) are positioned on the same straight line, the ejection bottom plate (32) is positioned between the axial directions of the upper coil (311) and the lower coil (312), the two ejection shots (313) are fixedly connected to the ejection bottom plate (32) and are respectively positioned at two sides of the ejection bottom plate (32), the two ejection shots (313) are respectively opposite to the upper coil (311) and the lower coil (312), and the upper coil (311) can drive the ejection shots (313) opposite to the upper coil (311) to move towards the direction close to the lower coil (312) after being electrified, after the lower coil (312) is electrified, the shot (313) shot by the lower coil (312) can be driven to move towards the upper coil (311).

3. An electromagnetic pulse generator according to claim 2, wherein: the protective shell (1) is covered on the outer sides of the vacuum arc extinguish chamber (2) and the power device (3), the guide mechanism is an upper coil fixing seat (314), the upper coil fixing seat (314) is fixedly arranged in the protective shell (1), the upper coil (311) is fixedly arranged on the upper coil fixing seat (314), and the connecting column (33) penetrates through the upper coil fixing seat (314) and is in plug-in fit with the upper coil fixing seat (314).

4. An electromagnetic pulse generator as claimed in claim 1, wherein: the circuit that discharges sets up many, and vacuum interrupter (2) set up a plurality ofly, and a plurality of vacuum interrupter (2) are connected respectively on many circuit that discharges, and power device (3) are used for controlling opening and close of a plurality of vacuum interrupter (2).

5. An electromagnetic pulse generator as claimed in claim 4, wherein: the electromagnetic ejection assemblies (31), the ejection bottom plate (32) and the connecting columns (33) are respectively arranged in the same number, each connecting column (33) is fixedly connected with the movable guide rod (24) on each discharge loop, and the plurality of movable guide rods (24) are driven to synchronously approach or synchronously leave the static contact (23) through synchronous action of the plurality of electromagnetic ejection assemblies (31).

6. An electromagnetic pulse generator as claimed in claim 4, wherein: the electromagnetic ejection assembly (31) and the ejection bottom plate (32) are respectively provided with a single connecting column (33), the connecting columns (33) are arranged along the ejection bottom plate (32), and the connecting columns (33) are respectively and fixedly connected with the movable guide rods (24) of the vacuum arc-extinguishing chambers (2).

7. An electromagnetic pulse generator as claimed in claim 1 or 6, characterized by: sealed shell (21) include outer insulating casing (211), quiet end cover board (212) and move end cover board (213) and respectively fixed the setting at the both ends of outer insulating casing (211) axis direction, static contact (23) fixedly connected with quiet guide bar (25), quiet end cover board (212) is run through in quiet guide bar (25), quiet guide bar (25) are connected with adjustment mechanism (4), can drive static contact (23) and be close to or keep away from moving contact (22) through adjustment mechanism (4), fixedly connected with second bellows (27) between static contact (23) and quiet end cover board (212).

8. An electromagnetic pulse generator as claimed in claim 7, wherein: the adjusting mechanism (4) comprises an adjusting screw rod (41) and an adjusting nut (42), the adjusting screw rod (41) is fixedly connected with the static guide rod (25), the adjusting screw rod (41) is in sliding fit with the protective shell (1) along the axis direction of the adjusting screw rod (41), the adjusting nut (42) is in threaded connection with the adjusting screw rod (41), and the adjusting nut (42) is rotatably connected with the protective shell (1).

9. An electromagnetic pulse generator as claimed in claim 8, wherein: an upper end insulator (251) is fixedly connected between the adjusting screw rod (41) and the static guide rod (25).

Images