73results about "Spark gaps with auxillary triggering" patented technology

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.

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 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.

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.

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 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 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.

One disclosed example provides a high-power switch circuit, comprising a cathode and an anode. One or more of the cathode and the anode comprises a three-dimensional graphene network. The high-power switch circuit further comprising a gap separating the cathode and the anode, a high-power voltage source electrically connected to the cathode and the anode, and a trigger device configured to selectively control triggering of an electrical current between the cathode and the anode.

A surge protective device includes a first electrical terminal, a second electrical terminal, and an overvoltage protection circuit connected between the first electrical terminal and the second electrical terminal. The overvoltage protection circuit includes a spark gap assembly between the first electrical terminal and the second electrical terminal. The spark gap assembly includes a first spark gap (SG) electrode and a second SG electrode defining a spark gap therebetween, and a trigger circuit operative to ignite a main electric arc between the first and second SG electrodes across the spark gap. The trigger circuit includes a groove defined in the second SG electrode, and a trigger member disposed in the groove. The trigger member is operative to assist formation of a trigger arc.

To provide a transient voltage protection characteristic device capable of suppressing deterioration of transient voltage protection characteristics.SOLUTION: A transient voltage protection device includes an element body 2, a first external electrode disposed on a surface of the element body 2, a second external electrode disposed on the surface of the element body 2 and separated from the first external electrode, an internal electrode 5, and an internal electrode 6. The internal electrode 5 is disposed in the element body 2 and is connected to the first external electrode. The internal electrodes 6 face the internal electrodes 5 in the element body 2 and are connected to the second external electrode. The internal electrodes 5 include ends exposed to the surfaces of the element body 2 and connected to the first external electrodes, and an end 5f located in the element body 2 and separated from the surfaces of the element body 2. The end 5f includes a corner portion 51 including an edge 51a facing the internal electrodes 6. The edge 51a is curved in a plan view of the internal electrodes 5.SELECTED DRAWING: Figure 5

The invention relates to a safety device (10) for disconnecting a surge protection device (12). The safety device (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 in an ignition section (30) by an ignition gap (32). The safety device (10) has an adjustment mechanism (40) configured to increase the ignition gap (32) between the electrodes (26, 28) in order to increase the dielectric strength of the safety device (10) by increasing the voltage difference required to establish an arc between the electrodes (26, 28) in the ignition section (30). The adjustment mechanism (40) is coupled to a tripping mechanism (64) configured to automatically trip the adjustment mechanism (40) after an arc occurs.Furthermore, the invention relates to an assembly (8) comprising the safety device (10) and a surge protection device (12).

The invention relates to a gas discharger (2) for the protection of an electrical installation, comprising: an electrically insulating body (10); two electrodes (11; 12) fixed to the electrically insulating body and spaced apart in a principal direction; an inter-electrode space (20) formed in the electrically insulating body between the two electrodes, the inter-electrode space being closed in a gas-tight manner; two connection terminals (31; 32) intended to allow an electrical connection of said gas discharger to the electrical installation, the two connection terminals being respectively electrically connected to said two electrodes; the inter-electrode space comprising a deflection channel (22) defining a propagation path (T) for an electric arc;a cross-section of the deflection channel (22) being between 2 and 8 mm², the deflection channel extending transversely or obliquely to the principal direction over at least part of the length of the deflection channel; and a gas trapped in the inter-electrode space, the gas being selected from argon Ar, neon Ne, dinitrogen N2, dihydrogen H2, helium He and mixtures thereof. Figure for the abstract: 3;

This application relates to a detachable ball gap spark switch, belonging to the technical field of circuit control equipment. It includes a switch body and a triggering device. The switch body includes a mounting bracket, a mounting rod, and a ball. A cable is connected to the ball, connecting the ball and the triggering device. A detachment mechanism is provided between the cable and the triggering device. The detachment mechanism includes a detachment ring, a mounting platform, and elastic clips. The detachment ring is fixed to the cable. The mounting platform is mounted on the triggering device. The elastic clips are mounted on the mounting platform, with at least two elastic clips on each mounting platform. The elastic clips are inserted into the detachment ring, and their elastic deformation prevents the detachment ring from detaching from the mounting platform. The detachment ring, mounting platform, and elastic clips are all made of conductive material. This design reduces costs and efficiently replaces damaged parts.

The invention belongs to the field of high-voltage large-current gas switches, and particularly relates to a compact high-voltage large-current gas switch triggered by weak laser, a device and a Marx driving source. The technical problems that an existing trigger switch comprises three electrodes, a trigger loop, a photoconductive switch trigger light path and other complex parts, the structure is not compact enough, and the Marx driving source application requirement is difficult to meet are mainly solved. The gas switch comprises a high-voltage electrode, a low-voltage electrode, a trigger electrode, a supporting insulator, an insulating cover, a reversal element, a photoconductive switch and an energy transmission optical fiber. By adopting the innovative structural design, the compact assembly of the three-electrode gas switch, the photoconductive switch, the reversing element and other parts is realized, and the gas switch has the characteristics of compact structure, convenience in assembly and the like.

A drilling arrangement (100) for high voltage electro pulse rock drilling, the drilling arrangement (100) comprising: a pulsed power generator (110) for generating high voltage electro pulses; a drill tool (120) for forming a drill hole (195) by conveying the generated high voltage electro pulses, via electrodes (180) in the drill tool (120), through mineral substrate (190); at least one switch (300), arranged between the pulsed power generator (110) and the electrodes (180), which switch (300) when it is closed allows high voltage electro pulses from the pulsed power generator (110) to reach the electrodes (180); and a switch control device (160). The switch (300) is preferably a controllable switch comprising a switch closing arrangement (350), which is controlled by receiving a switch trigger signal emitted from the switch control device (160) to close the switch (300). The switch control device (160) is preferably arranged to synchronize the switch trigger signal with the high voltage electro pulses from the pulsed power generator (110).

Circuit protection device (130) for use in a circuit containing at least one pair of conductors, wherein the circuit protection device (130) is configured to generate an arc, wherein the arc products generating the arc include arc gases, 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, wherein the at least one pair of electrode arrangements (213) is configured to generate the arc; a conductor base (210) for mounting the electrode arrangements (213) on it; a cover (202) connected to the conductor base (210) and defining 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) arranged on the conductor base (210) in the insulation chamber (247), wherein the enclosure shield (206) defines an enclosure chamber (249) enclosing the at least one pair of electrode arrangements (213), wherein the enclosure shield (206) is configured to at least partially enclose arc products in the enclosure chamber (249); and a preload arrangement (246) positioned between the cover (202) and the enclosure shield (206) and connected to at least one of the cover (202) and the enclosure shield (206), wherein the preload arrangement (246) is configured to allow the enclosure shield (206) to move away from the conductor base (210) in order to define a gap between the conductor base (210) and the enclosure shield (206) to allow at least some of the arc gases to escape from the enclosure chamber (249).

A gas discharge tube assembly (100) comprises: a multi-cell gas discharge tube (GDT) (102) including: a housing (106) defining a GDT chamber (108); a plurality of inner electrodes (E1-E21) located in the GDT chamber; a gas (M) contained in the GDT chamber (108); wherein the inner electrodes are serially disposed in the chamber in spaced apart relation to define a series of cells (C) and spark gaps (G); and characterized in that: the gas discharge tube assembly includes an integral primary GDT connected in series with the multi-cell GDT, wherein the primary GDT is operative to conduct current in response to an overvoltage condition across the gas discharge tube assembly and prior to conduction of current across the plurality of spark gaps of the multi-cell GDT.