130results about "Spark gaps with auxillary triggering" patented technology

Apparatuses including spark gap structures for electrical overstress (EOS) monitoring or protection, and associated methods, are disclosed. In an aspect, a vertical spark gap device includes a substrate having a horizontal main surface, a first conductive layer and a second conductive layer each extending over the substrate and substantially parallel to the horizontal main surface while being separated in a vertical direction crossing the horizontal main surface. One of the first and second conductive layers is electrically connected to a first voltage node and the other of the first and second conductive layers is electrically connected to a second voltage node. The first and second conductive layers serve as one or more arcing electrode pairs and have overlapping portions configured to generate one or more arc discharges extending generally in the vertical direction in response to an EOS voltage signal received between the first and second voltage nodes.

A fuse-less ignition system for fireworks. An ignitor module is provided that is insertable into a firework and includes: a first end having an interface adapted to reside on an exterior surface of the firework for receiving a plug; a set of electrical contacts adapted to receive electricity from the plug; a heat element coupled to the electrical contacts and adapted to heat in response to received electricity; and a cavity adjacent to the heat element containing a pyrotechnic material, the pyrotechnic material adapted to ignite in response to a heating of the heat element.

Apparatuses including spark gap structures for electrical overstress (EOS) monitoring or protection, and associated methods, are disclosed. In an aspect, a vertical spark gap device includes a substrate having a horizontal main surface and a plurality of pairs of conductive layers over the horizontal main surface. Different ones of the pairs are separated by different vertical distances such that each pair serves as an arcing electrode pair and different ones of the arcing electrode pairs are configured to arc discharge at different voltages.

The invention relates to an ignition device (100) for a spark gap arrangement (200) comprising at least one first and one second ignition capacitor (C1, C2) for voltage division between a first and a second electrode of the spark gap arrangement, a first trigger spark gap (Tgr1) arranged in a first parallel branch to the first ignition capacitor, and a second trigger spark gap (Tgr2) arranged in a second parallel branch to the second ignition capacitor. The invention is characterized in that a first ignition resistor (P1b) is provided in the first parallel branch, wherein a first potential point (101) between the first ignition resistor and the first trigger spark gap is connected to an ignition electrode (ZE2) of the second trigger spark gap.The invention further relates to a spark gap arrangement with the ignition device, an arrangement with a high-voltage device and the spark gap arrangement for protecting the high-voltage device, and a method for igniting the spark gap arrangement.

To provide a transient voltage protection device capable of restraining degradation of transient voltage protection characteristics.SOLUTION: A transient voltage protection device ED1 includes an external electrode 10 disposed on an end face 1a and a plurality of side faces 1c, an external electrode 20 that are spaced apart from the external electrode 10 and disposed on an end face 1b and side faces 1d, an internal electrode 30 that is disposed inside an element body 1 and connected to the external electrode 10, and an internal electrode 40 that is disposed inside the element body 1 and connected to the external electrode 20. The internal electrode 30 includes an end 33 that is exposed to the end face 1a and the side faces 1c and connected to the external electrode 10. The internal electrode 40 includes an end 43 that is exposed to the end face 1b and the side faces 1d and connected to the external electrode 20.SELECTED DRAWING: Figure 2

There is disclosed herein a protection device (100) adapted to protect a series compensation unit (SCU, 102) for a power line (2), wherein the protection device (100) comprises a mechanical switch (104), configured to close to thereby bypass the SCU (102), and a triggered spark gap (TSG, 106) connected across the mechanical switch 104, configured to trigger in response to a trigger signal. The actuator of the mechanical switch (104) is powered by an energization circuit (108) electrically connected in series between the SCU (102) and the TSG (106), or by at least one energy storage (118) in the series compensation unit (102). There is further disclosed herein a series compensation system (1) comprising such a protection device (100) arranged across a series compensation unit (102).

A surge protective device (SPD) module comprises: a first spark gap electrode (124) having an inner end (124A) and an opposing outer end (124B), the inner end (124A) electrically connected to a first electrical terminal of an overvoltage protection circuit; a second spark gap electrode (126) spaced apart from the first spark gap electrode (124), the second spark gap electrode (126) having an inner end (126A) and an opposing outer end (126B), the inner end (126A) of the second spark gap electrode (126) electrically connected to a second electrical terminal of the overvoltage protection circuit; and a semiconductive member (154) having a first end face (154A) and an opposing second end face (154B) interposed between the first spark gap electrode (124) and the second spark gap electrode (126).

The invention relates to a device for improving the through-flow arc control of a high-voltage large-capacity gas gap switch, and the device comprises a test cavity which is used for providing a controllable gas insulation environment and serves as a carrier of a high-voltage large-current discharge test; the trigger discharge loop is used for generating a high-voltage pulse to drive the trigger cavity to generate plasma jet and induce the main gap to be broken down and conducted at a preset moment; and the large current generation loop is used for storing energy and generating a high-energy fault current simulating an actual working condition after the main gap is conducted. A main gap can form a stable and controllable initial discharge channel under high-voltage and large-gap conditions, active constraint is carried out on an arc movement track in a high-energy fault current flowing stage, and long-term residence of an arc root in a local area of an electrode is avoided, so that the ablation degree of the electrode is remarkably reduced, the through-flow life is prolonged, and meanwhile, the service life of the electrode is prolonged. A transverse magnetic field generated by the spiral groove structure enables an electric arc to rotate along the surface of the electrode, the stability of an arc column is effectively improved, and the reliability under the condition of large current flow is improved.

The application relates to the technical field of pulse power, in particular to a magnetic core auxiliary coaxial pre-ionization three-electrode gas switch, which comprises a gas switch main body, the gas switch main body comprises a low-voltage electrode, a high-voltage electrode and a trigger electrode which are coaxially arranged in an insulating support; the trigger electrode and the low-voltage electrode form a pre-ionization gap, and the trigger electrode and the high-voltage electrode form a main gap; the trigger electrode is used for receiving a trigger pulse voltage; when the trigger pulse makes the bottom of the trigger electrode produce strong field distortion, the pre-ionization gap is rapidly broken down, the main gap is pre-ionized by ultraviolet, and the gas switch main gap is rapidly broken down after the trigger pulse reaches the low-voltage electrode. The switch can improve the stability of the main gap breakdown.

A multi-spark gap for an overvoltage protector, having multiple electrodes and insulation elements arranged between the electrodes, a holding arrangement for mechanical holding and for making electrical contact with the electrodes of the multi-spark gap, wherein the holding arrangement has at least a first electrically conductive clamping element, a second electrically conductive clamping element, and a first electrically conductive connecting element, wherein the electrodes are arranged between the first clamping element and the second clamping element, wherein the first clamping element makes electrical contact with the first electrode of the multi-spark gap, and wherein the second clamping element makes electrical contact with the last electrode of the multi-spark gap, and wherein the at least first connecting element mechanically connects the first clamping element and the second clamping element to one another.

Circuit protection device (130) for use in a circuit having at least one pair of conductors, wherein the circuit protection device (130) is configured to generate an arc, and wherein the circuit protection device (130) comprises: at least one pair of electrode arrangements (213), wherein a first electrode arrangement of the pair of electrode arrangements (213) is electrically connected to a first conductor of the at least one pair of conductors, and a second electrode arrangement of the pair of electrode arrangements (213) is electrically connected to a second conductor of the at least one pair of conductors; a conductor base (210) designed to support the electrode arrangements (213) on it; a cover (202) which is connected to the conductor base (210) and defines at least one insulation chamber (247), wherein the at least one pair of electrode arrangements (213) is arranged in the at least one insulation chamber (247); an enclosure shield (206) movably connected to the cover (202) in the isolation chamber (247), wherein the enclosure shield (206) defines an enclosure chamber (249) configured to enclose charged particles generated by the arc, and wherein the enclosure shield (206) operates such that it moves relative to the cover (202) in response to a pressure change generated by the arc in the enclosure chamber (249); and an insulation arrangement (207) connected to at least one cover (202) and to the enclosure shield (206), wherein the insulation arrangement (207) is configured to prevent the cover (202) from touching the enclosure shield (206).

To provide a transient voltage protection device that can control a discharge part.SOLUTION: A transient voltage protection device 1 comprises: an element assembly 2 that has a cavity S formed therein; internal electrodes 5, 6 that extend along a first direction D1 and are provided in the element assembly 2 to face each other across the cavity S; external electrodes 3, 4 that are connected with the internal electrodes 5, 6; and a discharge auxiliary unit 7 that is provided in the element assembly 2 to be in contact with the internal electrodes 5. 6. The internal electrodes 5, 6 have a principal surface 5f and a principal surface 6f facing each other in a second direction D2 orthogonal to the first direction D1, and apical surfaces 5b, 6b connecting the principal surface 5f and principal surface 6f with each other, respectively. Principal surfaces are in contact with the discharge auxiliary unit 7. The principal surfaces 5f, 6f are in contact with the element assembly 2. The apical surfaces 5b, 6b are in contact with the element assembly 2. The element assembly 2 has a projection that enters the inside of the cavity S from between the principal surfaces 5f, 6f and is located between the apical surfaces 5b, 6b.SELECTED DRAWING: Figure 3

The invention relates to a fuse (10) for a surge protection device (12). The fuse (10) has a housing (16) in which a horn spark gap (24) is arranged, the spark gap having two electrodes (26, 28) separated from each other by a gap (32) in an ignition section (30). The fuse (10) has an adjustment mechanism (40) configured to increase the gap (32) between the electrodes (26, 28) and / or an ignition gap (39) in order to increase the dielectric strength of the fuse (10). The adjustment mechanism (40) is manually operable or coupled to a tripping mechanism (64) configured to automatically trip the adjustment mechanism (40) following at least one tripping event. The invention further relates to an assembly (8) comprising the fuse (10) and a surge protection device (12).

A triggered vacuum gap (TVG) device that has application as a closing switch for synchronized closing in distribution and transmission power systems. The TVG device controllably sustains a current arc in the device through initial current zeros created by power system transients and, thereby, prevents premature interruption of the closing operation. The TVG device includes main electrodes defining a vacuum gap therebetween and a triggering electrode providing a triggering gap between one main electrode and the triggering electrode. The TVG device also includes a triggering circuit having a high voltage impulse source that supplies a fast rising impulse voltage to the one main electrode and the triggering electrode for creation of a plasma to provide an initial breakdown of the triggering gap and a low voltage unidirectional current source that supplies current to the one main electrode and the triggering electrode once the first triggering gap breakdown has occurred.

A surge arrester comprising: - an electrically insulating base body (GK) enclosing a cavity, - a first and a second electrode (A,B) arranged at a distance ab from each other in the cavity, - a central electrode (M) having a distance am and bm to the first and second electrodes respectively, where am = bm < ab, - a trigger electrode (T) having a distance tm to the central electrode, where tm < am, bm, - a trigger circuit (TS) for generating a trigger voltage at the trigger electrode suitable for igniting a gas discharge, wherein the trigger electrode (T) has a rectangular or square area.

The invention relates to a laser-triggered multi-path high-voltage spark switch system which is composed of a laser-triggered spark main switch circuit and an electric-triggered spark sub-switch circuit. The laser trigger spark main switch can trigger the multiple electric trigger sub-switch circuits at the same time. The system can be applied to different environment conditions, especially research on synchronous triggering of multiple plasma guns in a magnetic inertial confinement fusion vacuum cavity, effectively solves the problem that a spark switch is triggered by laser in a special environment scene which is not suitable for spatial light path transmission, avoids triggering the spark switch by the laser through optical fiber transmission, and is high in reliability. The triggering system is simple, convenient to operate and low in cost; because laser trigger is used as a main switch to trigger a plurality of sub-switches, the laser trigger spark switch has the characteristics of small delay and low jitter, and the Rogowski coil has the characteristics of clean current signal acquisition and low noise.

Devices with spark gap structures for monitoring or protecting against electrical overload (EOS) and associated methods are disclosed. In one aspect, a vertical spark gap device comprises a substrate with a horizontal main surface, a first conductive layer, and a second conductive layer, each extending over the substrate and substantially parallel to the horizontal main surface, while separated in a vertical direction intersecting the horizontal main surface. One of the first and second conductive layers is electrically connected to a first voltage node, and the other of the first and second conductive layers is electrically connected to a second voltage node.The first and second conductive layers serve as one or more arc electrode pairs and have overlapping sections configured to generate one or more arc discharges in response to an EOS voltage signal received between the first and second voltage nodes, generally extending in the vertical direction.

An electrical protection assembly includes a semiconductive gap-assisted (SGA) fuse assembly forming an overcurrent protection circuit. The SGA fuse assembly includes a fuse element and a semiconductive gap assembly electrically connected in series with the fuse element. The semiconductive gap assembly includes: a first gap electrode and an opposing second gap electrode; a trigger gap defined between the first and second gap electrodes; and a semiconductive member disposed in the trigger gap. The semiconductive member is configured to assist in initiation of an electrical arc flashover across the trigger gap between the first and second gap electrodes responsive to an overvoltage developed across the first and second gap electrodes.

A fuse-less ignition system for fireworks. An ignitor module is provided that is insertable into a firework and includes: a first end having an interface adapted to reside on an exterior surface of the firework for receiving a plug; a set of electrical contacts adapted to receive electricity from the plug; a heat element coupled to the electrical contacts and adapted to heat in response to received electricity; and a cavity adjacent to the heat element containing a pyrotechnic material, the pyrotechnic material adapted to ignite in response to a heating of the heat element.

There is disclosed herein a protection device (100) adapted to protect a series compensation unit (SCU, 102) for a power line (2), wherein the protection device (100) comprises a mechanical switch (104), configured to close to thereby bypass the SCU (102), and a triggered spark gap (TSG, 106) connected across the mechanical switch 104, configured to trigger in response to a trigger signal. The actuator of the mechanical switch (104) is powered by an energization circuit (108) electrically connected in series between the SCU (102) and the TSG (106), or by at least one energy storage (118) in the series compensation unit (102). There is further disclosed herein a series compensation system (1) comprising such a protection device (100) arranged across a series compensation unit (102).

The invention relates to a high-pressure gas switch of a pulse power device and an electrode distance adjusting method, in particular to an MV-grade gas switch with an adjustable electrode distance and an electrode distance adjusting method thereof, and solves the problems that the electrode distance of an existing gas switch is difficult to adjust; and an external adjusting mechanism cannot be applied to a closed space structure and is easily influenced by a strong electromagnetic environment. The invention relates to an MV-grade gas switch with an adjustable electrode distance, which comprises a first electrode disc, a first insulating cylinder, a second insulating cylinder, a second electrode disc, a first electrode adjusting mechanism, a second electrode adjusting mechanism, two electrode ball heads, a guide rod and two pneumatic electromagnetic valve groups, wherein the distance of the electrode ball head can be adjusted and controlled in a closed space; the method for adjusting the distance between the electrodes can be applied to a complex electromagnetic environment and is not affected by electromagnetic damage.

The application belongs to a kind of pulse power devices, and particularly relates to a gas steepening switch with ultraviolet pre-ionization structure, which solves the problems of high jitter, high inductance, short service life and poor reliability of existing steepening switches, and is difficult to meet the technical problems required by fast pulse trigger source.The gas steepening switch with ultraviolet pre-ionization structure comprises an upper electrode assembly, a lower electrode assembly, a gas nozzle, a switch housing, a first annular pre-ionization electrode and a second annular pre-ionization electrode arranged in the switch housing; the upper electrode assembly and the lower electrode assembly are oppositely arranged at two ends of the switch housing, and the upper electrode assembly and the lower electrode assembly form a closed cavity with the switch housing; the upper electrode assembly comprises an upper electrode, and the lower electrode assembly comprises a lower electrode; the upper electrode and the lower electrode are coaxially arranged, and the upper electrode and the lower electrode form a main gap; the first annular pre-ionization electrode and the second annular pre-ionization electrode are coaxially and oppositely arranged, and a pre-ionization gap is formed between the first annular pre-ionization electrode and the second annular pre-ionization electrode.

To provide a transient voltage protection device that can prevent a reduction in the durability of the transient voltage protection device and improve transient voltage protection characteristics.SOLUTION: A transient voltage protection device 1 comprises: an element assembly 2; external electrodes 3, 4 that are arranged on the element assembly 2; an internal electrode 5 that is arranged in the element assembly 2 and connected with the external electrode 3; and an internal electrode 6 that is arranged in the element assembly 2 and connected with the external electrode 4. The internal electrode 5 has a principal surface 5c. The internal electrode 6 has a principal surface 6c facing the principal surface 5c. The element assembly 2 has a cavity S formed in a portion located between the principal surface 5c and the principal surface 6c. The positions of a pair of opening ends S1, S2 of the cavity S in a third direction D3 are defined by the principal surface 5c and the principal surface 6c, respectively. The pair of opening ends S1, S2 are different in opening space from each other.SELECTED DRAWING: Figure 2

The invention relates to the technical field of pulse power, in particular to a magnetic core auxiliary type coaxial preionization three-electrode gas switch which comprises a gas switch body, and the gas switch body comprises a low-voltage electrode, a high-voltage electrode and a trigger electrode which are coaxially arranged in an insulating supporting piece; the trigger electrode and the low-voltage electrode form a preionization gap, and the trigger electrode and the high-voltage electrode form a main gap; the trigger electrode is used for receiving trigger pulse voltage, when the trigger pulse enables the bottom of the trigger electrode to generate strong field distortion, the preionization gap is rapidly broken down and the main gap is subjected to ultraviolet preionization, and when the trigger pulse reaches the low-voltage electrode, the main gap of the gas switch is induced to be rapidly broken down. The switch can improve the stability of main gap breakdown.

The present invention relates to an inflatable spark gap for protecting an electrical installation, the inflatable spark gap comprising: an electrically insulating body; two electrodes fixed to the electrically insulating body and spaced apart from each other in the main direction; an inter-electrode space formed in the electrically insulating body between the two electrodes, the inter-electrode space being sealed in a gas-tight manner; two connection terminals intended to be able to electrically connect the inflatable spark gap to an electrical facility, the two connection terminals being electrically connected to a respective one of the two electrodes; the inter-electrode space comprises a diverting channel defining a propagation trajectory (T) for the arc, the cross-sectional area of the diverting channel being between 2 mm < 2 > and 8 mm < 2 >, the diverting channel extending transversely or obliquely to the main direction over at least a portion of the length of the diverting channel; and a gas sealed in the inter-electrode space, the gas being selected from the group consisting of argon Ar, neon Ne, nitrogen N2, hydrogen H2, helium He, and mixtures thereof.

A surge arrester (10) for a DC network (12) comprises a spark gap (14) for extinguishing follow currents in the DC network (12) whose current intensity is equal to or greater than a defined current threshold, and a triggerable extinguishing aid (36) associated with the spark gap (14), which is configured to extinguish follow currents below the defined current threshold. The surge arrester (10) further comprises an evaluation module (38) for triggering the extinguishing aid (36), wherein the evaluation module (38) is configured to trigger the extinguishing aid (36) as soon as at least two tripping conditions are met, which are characteristic of the fact that the spark gap (14) alone cannot extinguish the follow current within a defined time period. A method for operating such a surge arrester is also described.