CN220401426U - Nuclear electromagnetic pulse protection circuit - Google Patents
Nuclear electromagnetic pulse protection circuit Download PDFInfo
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- CN220401426U CN220401426U CN202323531127.XU CN202323531127U CN220401426U CN 220401426 U CN220401426 U CN 220401426U CN 202323531127 U CN202323531127 U CN 202323531127U CN 220401426 U CN220401426 U CN 220401426U
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- 230000001052 transient effect Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000000740 bleeding effect Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 18
- 238000004146 energy storage Methods 0.000 abstract description 3
- 230000001629 suppression Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to a nuclear electromagnetic pulse protection circuit. The electromagnetic pulse generator comprises a power supply circuit, a primary bleeder circuit, a secondary bleeder circuit and a pulse choke circuit, wherein the primary bleeder circuit is used for first bleeder nuclear electromagnetic pulse and comprises a first end connected with a wire inlet end of the power supply circuit and a second end used for grounding; the secondary bleeder circuit is used for secondary bleeder nuclear electromagnetic pulse and comprises a first end connected with the first end of the primary bleeder circuit and a second end used for grounding; the pulse choke circuit is used for limiting residual current. The gas discharge tube is used for replacing a piezoresistor in the prior art, so that junction capacitance and charge storage capacity in a circuit are reduced, and a Schottky diode is used for reducing the junction capacitance of a transient suppression diode in the prior art, so that energy storage current cannot be generated and further flows to a secondary bleeder circuit and a pulse choke circuit, the technical problem that a nuclear electromagnetic pulse protection product in the prior art is limited in protection effect is effectively solved, and efficient bleeder of nuclear electromagnetic pulses is realized.
Description
Technical Field
The utility model relates to the technical field of electromagnetic pulse protection, in particular to a nuclear electromagnetic pulse protection circuit.
Background
In the case of nuclear explosion, there is a fourth effect, namely a nuclear electromagnetic pulse effect, in addition to the generation of shock waves, photothermal radiation, and radioactive contamination. The nuclear electromagnetic pulse is a strong electromagnetic wave generated instantaneously by nuclear explosion, and is very similar to lightning in nature, and the killing radius of the nuclear electromagnetic pulse is increased along with the increase of the explosion height. Millions of ton equivalent nuclear bullets explode at hundreds of kilometers, no shock wave can be generated and heat radiation can not be generated due to the fact that air is not available, radioactive dust is weakened along with square distance, and nuclear electromagnetic pulse almost forms the sole nuclear explosion effect; other damage effects on the ground are very small, but the damage radius of the nuclear electromagnetic pulse can reach thousands of kilometers, the damage radius can eliminate information stored in a computer, the automatic control system is disabled, the wireless communication device and the household electrical appliance are interfered and damaged, and the damage effect on personnel is relatively small. The high similarity of nuclear electromagnetic pulse and thunder determines that the common nuclear electromagnetic pulse protection means is similar to the thunder protection means, and a surge protector or a lightning protection filter circuit is generally simply used for protecting the nuclear electromagnetic pulse, but the inventor of the application finds that the above technology has at least the following technical problems in the process of realizing the technical scheme of the embodiment of the application:
the electric field of the nuclear electromagnetic pulse changes rapidly, the voltage dependent resistor in the common surge protector can rise to the maximum value within 0.01-0.03 microsecond and is 50 times faster than the lightning pulse, so that the voltage dependent resistor in the common surge protector can not effectively respond to the nuclear electromagnetic pulse with extremely fast rising speed, only can discharge 2% of the current of the nuclear electromagnetic pulse, and has very limited protection capability; the primary and secondary circuits of the power supply lightning protection filter circuit are mainly used for discharging us-level lightning pulses, and cannot form effective matching when ns-level nuclear power pulses are processed, so that only about 75% of pulse energy can be discharged, and 10A required by the standard (GJB 8848-2016) cannot be met, and the protection effect is poor.
Disclosure of Invention
According to the nuclear electromagnetic pulse protection circuit, the technical problem that a nuclear electromagnetic pulse protection product in the prior art is limited in protection effect is solved, and efficient release of nuclear electromagnetic pulses is achieved.
The embodiment of the application provides a nuclear electromagnetic pulse protection circuit, which comprises a power supply circuit, a primary bleeder circuit, a secondary bleeder circuit and a pulse choke circuit, wherein the primary bleeder circuit, the secondary bleeder circuit and the pulse choke circuit are sequentially connected in series from an inlet wire end to an outlet wire end of the power supply circuit;
the primary bleeder circuit is used for first bleeder nuclear electromagnetic pulse and comprises a first end connected with the inlet wire end of the power supply circuit and a second end used for grounding;
the secondary bleeder circuit is used for secondarily bleeding the nuclear electromagnetic pulse and comprises a first end connected with the first end of the primary bleeder circuit and a second end used for grounding;
the pulse choke circuit is used for limiting residual current and comprises a first end connected with the first end of the secondary bleeder circuit and a second end used for grounding.
Further, the primary bleeder circuit adopts a gas discharge tube;
the first end of the gas discharge tube is used as the first end of the primary bleeder circuit, and the second end of the gas discharge tube is used as the second end of the primary bleeder circuit.
Further, the secondary bleeder circuit comprises a first inductor, a first diode, a second diode and a fuse;
the first end of the first inductor is used as the first end of the secondary bleeder circuit, the second end of the first inductor is connected with the first end of the fuse, the second end of the fuse is connected with the first end of the first diode, the second end of the first diode is connected with the anode of the second diode, and the cathode of the second diode is used as the second end of the secondary bleeder circuit.
Further, the pulse choke circuit comprises a second inductor and a capacitor;
the first end of the second inductor is used as the first end of the pulse choke circuit and is connected with the second end of the first inductor, the second end of the second inductor is respectively connected with the first end of the capacitor and the outlet end of the power supply circuit, and the second end of the capacitor is used as the second end of the pulse choke circuit.
Further, the first diode is a transient diode, and the second diode is a schottky diode.
Further, the power supply circuit is a three-phase alternating current circuit and comprises a first phase line, a second phase line and a third phase line.
Further, the power supply circuit is a three-phase four-wire alternating current circuit and comprises a first phase line, a second phase line, a third phase line and a zero line.
Further, the power supply line is a direct current power supply line.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1) The gas discharge tube is used for replacing a piezoresistor in the prior art, so that junction capacitance and charge storage capacity in a circuit are reduced, energy storage current cannot be generated and further flows to a secondary discharging circuit and a pulse choke circuit, the technical problem that a nuclear electromagnetic pulse protection product in the prior art is limited in protection effect is effectively solved, and efficient discharging of nuclear electromagnetic pulses is realized.
2) The secondary bleeder circuit adopts a transient diode to bleeder the residual current again, and reduces junction capacitance and charge storage capacity in the circuit through the Schottky diode, so that the residual current is prevented from rising after nuclear electromagnetic pulse is ended, the nuclear electromagnetic pulse bleeder effect is further improved, the technical problem that the nuclear electromagnetic pulse protection product in the prior art is limited in protection effect is effectively solved, and the efficient bleeder of the nuclear electromagnetic pulse is realized.
Drawings
FIG. 1 is a circuit block diagram of a nuclear electromagnetic pulse protection circuit;
FIG. 2 is a schematic diagram of a nuclear electromagnetic pulse protection circuit according to an embodiment of the present disclosure;
FIG. 3 is a second schematic circuit diagram of a nuclear electromagnetic pulse protection circuit according to another embodiment of the present disclosure;
in the figure, 10, a wire inlet end; 20. a first stage bleeder circuit; 21. a gas discharge tube; 30. a secondary bleeder circuit; 31. a first inductance; 32. a first diode; 33. a second diode; 34. a fuse; 40. a pulse choke circuit; 41. a second inductor; 42. a capacitor; 50. and a wire outlet end.
Detailed Description
According to the nuclear electromagnetic pulse protection circuit, the technical problem that a nuclear electromagnetic pulse protection product in the prior art is limited in protection effect is solved, and efficient release of nuclear electromagnetic pulses is achieved.
In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments, and it is apparent that the described embodiments are only some, but not all, examples of the present utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model, based on the embodiments of the present utility model.
Referring to fig. 1-2, the present utility model provides a nuclear electromagnetic pulse protection circuit, which includes a power supply circuit, a primary bleeder circuit 20, a secondary bleeder circuit 30 and a pulse choke circuit 40, wherein the primary bleeder circuit 20, the secondary bleeder circuit 30 and the pulse choke circuit 40 are sequentially connected in series from an inlet end 10 to an outlet end 50 of the power supply circuit; the primary bleeder circuit 20 is used for first bleeder nuclear electromagnetic pulse and comprises a first end connected with the incoming line end 10 of the power supply line and a second end used for grounding; the secondary bleeder circuit 30 is configured to bleed the electromagnetic pulse for a second time, and includes a first end connected to the first end of the primary bleeder circuit 20 and a second end for grounding; the pulse choke circuit 40 is used to limit the residual current, and includes a first terminal connected to the first terminal of the secondary bleed circuit 30 and a second terminal for grounding.
When the nuclear electromagnetic pulse generator is used, nuclear electromagnetic pulse enters from the inlet wire end 10 of a power supply circuit, the nuclear electromagnetic pulse is discharged for the first time through the primary discharging circuit 20, the residual nuclear electromagnetic pulse current is further discharged through the secondary discharging circuit 30, and finally pulse choke is performed through the pulse choke circuit 40, so that residual current is reduced.
It will be appreciated that the specific circuit structure of the primary bleeder circuit 20 is not limited, and may be selected according to actual requirements as long as the primary bleeder circuit has a function of primarily bleeding the nuclear electromagnetic pulse. In one embodiment, the primary bleeder circuit 20 employs a gas discharge tube 21; the first end of the gas discharge tube 21 serves as a first end of the primary bleeder circuit 20, and the second end of the gas discharge tube 21 serves as a second end of the primary bleeder circuit 20. When the nuclear electromagnetic pulse enters from the inlet wire end 10 of the power supply circuit, the induction voltage of the inlet wire end 10 of the power supply circuit is higher than the normal working voltage, so that the gas discharge tube 21 is started, the gas discharge tube 21 is conducted to the ground, and the nuclear electromagnetic pulse sequentially passes through the inlet wire end 10 of the power supply circuit and the gas discharge tube 21, so that preliminary pulse discharge is completed.
Above-mentioned technical scheme among this application embodiment uses gas discharge tube 21 to replace the piezo-resistor among the prior art, on the one hand has reduced junction capacitance and the charge storage space in the circuit, avoid producing the energy storage electric current and further flow to second grade bleeder circuit 30 and pulse choke circuit 40, on the other hand, gas discharge tube not only has the lightning protection function, the volume is also littleer relatively piezo-resistor, complexity and the manufacturing cost of circuit have been reduced when having multi-functional protection, the limited technical problem of nuclear power magnetism pulse protection product protection effect among the prior art has effectively been solved, not only have the lightning protection function when having realized the high-efficient bleeder of nuclear power magnetism pulse, also reduced the manufacturing cost of nuclear power magnetism pulse protection circuit.
It will be appreciated that the specific circuit structure of the secondary bleeder circuit 30 is not limited, and may be selected according to actual requirements as long as the secondary bleeder circuit 30 has a function of re-bleeding the nuclear electromagnetic pulse. In one embodiment, the secondary bleeder circuit 30 comprises a first inductance 31, a first diode 32, a second diode 33, and a fuse 34; the first end of the first inductor 31 is used as the first end of the secondary bleeder circuit 30, the second end of the first inductor 31 is connected with the first end of the fuse 34, the second end of the fuse 34 is connected with the first end of the first diode 32, the second end of the first diode 32 is connected with the anode of the second diode 33, and the cathode of the second diode 33 is used as the second end of the secondary bleeder circuit 30.
When in use, due to the existence of the first inductor 31, the wire inlet end 10 of the power supply line generates a reverse induced electromotive force, and the reverse induced electromotive force increases the instantaneous voltage of the wire inlet end 10 of the power supply line, so as to trigger the gas discharge tube 21 to be conducted before the secondary bleeder circuit 30. When the primary bleeder circuit 20 completes one bleeder, residual current still flows into the secondary bleeder circuit 30, the first diode 32 and the second diode 33 are used to bleed the nuclear electromagnetic pulse, and the fuse 34 is used for fuse protection when the second diode 33 fails.
According to the technical scheme in the embodiment of the application, the nuclear electromagnetic pulse is introduced into the primary bleeder circuit 20 by using the first inductor 31, and is bleeder again by using the first diode 32 and the second diode 33, so that the technical problem that the protection effect of a nuclear electromagnetic pulse protection product is limited in the prior art is effectively solved, and the efficient bleeder of the nuclear electromagnetic pulse is realized.
It will be appreciated that the specific circuit configuration of the pulse choke circuit 40 is not limited as long as it has a function of limiting the residual current, and the specific circuit configuration of the pulse choke circuit 40 may be selected according to actual requirements. In one embodiment, the pulse choke circuit 40 includes a second inductance 41 and a capacitance 42; the first end of the second inductor 41 is connected to the second end of the first inductor 31 as a first end of the pulse choke circuit 40, and the second end of the second inductor 41 is connected to the first end of the capacitor 42 and the outgoing line end 50 of the power supply line, respectively, and the second end of the capacitor 42 is the second end of the pulse choke circuit 40.
According to the technical scheme in the embodiment of the application, the second inductor 41 and the capacitor 42 are used for forming the filter network, and the current flowing into the outlet end 50 of the power supply line is reduced by blocking residual nuclear electromagnetic pulse, so that the technical problem that the protection effect of the nuclear electromagnetic pulse protection product is limited in the prior art is solved, and the limitation of the residual nuclear electromagnetic pulse is realized.
In some embodiments, the first diode 32 is a transient diode and the second diode 33 is a schottky diode. The fast rising edge of the nuclear electromagnetic pulse and the impedance of the pulse choke circuit 40 are lower than the instantaneous impedance generated by the first inductor 31, so that the transient diode is used for the second-stage discharging, and the junction capacitance of the transient diode is larger, so that the junction capacitance and the charge storage amount in the circuit are reduced by the schottky diode, and the residual current is prevented from rising after the nuclear electromagnetic pulse is ended.
According to the technical scheme in the embodiment of the application, the residual current is discharged again through the transient diode, the junction capacitance and the charge storage capacity in the circuit are reduced through the Schottky diode, the residual current is prevented from rising after the nuclear electromagnetic pulse is ended, the nuclear electromagnetic pulse discharging effect is further improved, the technical problem that the nuclear electromagnetic pulse protection product is limited in protection effect in the prior art is effectively solved, and the efficient discharging of the nuclear electromagnetic pulse is achieved.
Referring to fig. 2, in some embodiments, the power supply line is a three-phase ac line, including a first phase line, a second phase line, and a third phase line. In other embodiments, the power supply line is a dc power supply line.
Referring to fig. 3, in some embodiments, the power supply line is a three-phase four-wire ac line, including a first phase line, a second phase line, a third phase line, and a neutral line.
The utility model is particularly suitable for nuclear electromagnetic pulse of a three-phase three-wire alternating current circuit, a three-phase four-wire alternating current circuit and a direct current power supply circuit, and meets different scenes of nuclear electromagnetic pulse protection.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (8)
1. The nuclear electromagnetic pulse protection circuit is characterized by comprising a power supply circuit, a primary bleeder circuit (20), a secondary bleeder circuit (30) and a pulse choke circuit (40), wherein the primary bleeder circuit (20), the secondary bleeder circuit (30) and the pulse choke circuit (40) are sequentially connected in series from a wire inlet end (10) to a wire outlet end (50) of the power supply circuit;
the primary bleeder circuit (20) is used for first bleeder nuclear electromagnetic pulse and comprises a first end connected with a wire inlet end (10) of the power supply line and a second end used for grounding;
the secondary bleeder circuit (30) is used for secondarily bleeding the nuclear electromagnetic pulse and comprises a first end connected with the first end of the primary bleeder circuit (20) and a second end used for grounding;
the pulse choke circuit (40) is for limiting residual current, and includes a first terminal connected to a first terminal of the secondary bleed circuit (30) and a second terminal for grounding.
2. The circuit according to claim 1, characterized in that the primary bleeder circuit (20) employs a gas discharge tube (21);
the first end of the gas discharge tube (21) is used as the first end of the primary bleeder circuit (20), and the second end of the gas discharge tube (21) is used as the second end of the primary bleeder circuit (20).
3. The circuit according to claim 1 or 2, characterized in that the secondary bleeder circuit (30) comprises a first inductance (31), a first diode (32), a second diode (33) and a fuse (34);
the first end of the first inductor (31) is used as the first end of the secondary bleeder circuit (30), the second end of the first inductor (31) is connected with the first end of the fuse (34), the second end of the fuse (34) is connected with the first end of the first diode (32), the second end of the first diode (32) is connected with the anode of the second diode (33), and the cathode of the second diode (33) is used as the second end of the secondary bleeder circuit (30).
4. A circuit according to claim 3, characterized in that the pulse choke circuit (40) comprises a second inductance (41) and a capacitance (42);
the first end of the second inductor (41) is used as the first end of the pulse choke circuit (40) and is connected with the second end of the first inductor (31), the second end of the second inductor (41) is respectively connected with the first end of the capacitor (42) and the outlet end (50) of the power supply circuit, and the second end of the capacitor (42) is used as the second end of the pulse choke circuit (40).
5. A circuit according to claim 3, characterized in that the first diode (32) is a transient diode and the second diode (33) is a schottky diode.
6. The circuit of claim 1, 4 or 5, wherein the power supply line is a three-phase ac line comprising a first phase line, a second phase line and a third phase line.
7. The circuit of claim 1, 4 or 5, wherein the power supply line is a three-phase four-wire ac line comprising a first phase line, a second phase line, a third phase line and a neutral line.
8. The circuit of claim 1, 4 or 5, wherein the power supply line is a dc power supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323531127.XU CN220401426U (en) | 2023-12-25 | 2023-12-25 | Nuclear electromagnetic pulse protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323531127.XU CN220401426U (en) | 2023-12-25 | 2023-12-25 | Nuclear electromagnetic pulse protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220401426U true CN220401426U (en) | 2024-01-26 |
Family
ID=89607187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323531127.XU Active CN220401426U (en) | 2023-12-25 | 2023-12-25 | Nuclear electromagnetic pulse protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220401426U (en) |
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2023
- 2023-12-25 CN CN202323531127.XU patent/CN220401426U/en active Active
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