11 results about "Spark gap" patented technology

The present invention relates to an apparatus having an isolation device (1) for an overvoltage discharge device (2). A first contact (8) and a second contact (9) of the isolation device (1) are connected via a first path (16) having a thermally triggerable switching element (12). A second path (17) is arranged in electrical parallel with the first path (16). An impedance element (10) is arranged in the second path (17), wherein a spark gap (11) is arranged in the first path (16).

According to an embodiment, a method for determining the efficiency of a drilling process performed by an electric pulse drilling rig is disclosed, the rig including a drill bit (103) driven by a Max generator (100) configured to generate a discharge current (200, 300) penetrating a medium, the discharge current (200, 300) flowing between a first drill tip and a second drill tip, and the discharge current (200, 300) originating from a high-voltage pulse generated by the Max generator (100), the Max generator including a set of spark gaps (110-113) located between capacitors (130-133), the method comprising the steps of: capturing radiation at the spark gaps (110) of the Max generator, the radiation being generated when the Max generator (100) discharges; filtering the captured radiation at a predefined wavelength; and measuring the duration for which the filtered radiation is above a predefined threshold; and determining the efficiency of the drilling process based on the measured duration (201, 301).

The application discloses a compact controllable high-voltage ultra-short electromagnetic pulse generating device, which comprises a Marx main circuit and a pulse waveform shaping circuit, the Marx main circuit and the pulse waveform shaping circuit are both separately provided with sealed metal containers, the two metal containers are filled with insulating gas, a charging power supply connector for connecting a charging power supply is arranged on the metal container of the Marx main circuit, a discharge connector is further arranged on the metal container of the pulse waveform shaping circuit, a conductive structure is arranged between the two metal containers, and the Marx main circuit and the pulse waveform shaping circuit are connected through the conductive structure; a trigger signal connector for connecting a trigger device is further arranged on the metal container of the Marx main circuit, and the trigger device is used for triggering a controllable spark gap switch, so that the discharge voltage superposition effect and the output voltage amplitude can be improved, and the loss caused by the asynchronization of discharge switches can be reduced.

FIELD: electrical engineering.SUBSTANCE: invention relates to fire safety and can be used to test devices for protection against arc breakdown and spark gaps installed in electrical networks or electrical installations in premises, structures, buildings, aircraft, ships, railway transport and other objects for resistance to background interference. The claimed method for testing arc fault and spark gap protection devices for resistance to background interference consists in the fact that the diagnosed protection device is connected to an electric circuit comprising an arc fault generation source, an adjustable load, and also sources of background interference connected in parallel to the circuit, one of which is connected in the immediate vicinity of the tested protection device before the arc generator, and the second in the immediate vicinity of the adjustable load, after the arc generator, a current is passed through the electric circuit, the strength of which is determined by the size and nature of the adjustable load – active, inductive or mixed – and is 2.5-63.0 A, the resistance of the tested protection device to background interference is judged by its failure to operate in the mode without generating an electric arc for a set time and operation with opening the circuit and disconnection of the time meter in the mode with generating an electric arc for a set time. The response / non-response time is determined in advance using the interpolation method. The proposed method for testing arc-fault and spark-gap protection devices for resistance to background interference expands the range of methods for the specified purpose and improves the quality of testing arc-fault and spark-gap protection devices for the purpose of preventing fires associated with the occurrence of electric arcs in contact connections with defects and / or high transition resistances.EFFECT: testing of arc flashover and spark gap protection devices for resistance to background interference, increasing the reliability of electrical networks and electrical installations, as well as their fire safety.5 cl, 3 dwg, 9 tbl

A spark plug having a longitudinal axis. The spark plug includes: a housing having a bore along the spark plug longitudinal axis and a combustion-chamber-side end face; an insulator arranged at least partially within the housing, and having an insulator base extending from a combustion-chamber-side end face of the insulator to an insulator base neck; a central electrode arranged at least partially within the insulator; and a ground electrode arranged on the housing, the ground electrode and the central electrode being arranged so that the at least one ground electrode forms a spark gap with the central electrode, a width of the spark gap being defined by an inter-electrode distance between the central electrode and the ground electrode. The inter-electrode distance between the central electrode and the ground electrode is not greater than 0.4 mm. The spark gap is formed at least partially within the housing.

A MOV partial valve piece performance degradation early warning system and method, comprising: the voltage reduction function of the capacitor voltage divider arranged in the spark gap trigger auxiliary loop of the series compensation complete device converts the high voltage of the primary side MOV into low voltage of the secondary side, the low voltage signal of the secondary side is processed through the MOV voltage acquisition channel to obtain the MOV voltage; the current transformer CT in the MOV current loop converts the total circuit current of the primary side MOV and the MOV branch current into small current of the secondary side, the small current of the secondary side is processed through the MOV current acquisition channel arranged in the platform measurement box to obtain the total current of the MOV and the MOV branch current; the early warning analysis processing module takes the total current of the MOV, the MOV branch current and the MOV voltage as the criterion to early warn the performance degradation of the MOV partial valve piece based on the consistency of the volt-ampere characteristic. The present application realizes the prevention of MOV damage and guarantees the safety of the MOV.

Spark plug (10), comprising: a metal sleeve (20) which has a tubular shape and extends along an axis in one direction from front to back; a central electrode (13) which is held in the metal sleeve (20) with insulation; a grounding electrode (30) which is electrically connected to the metal sleeve (20) and arranged such that a spark gap (33) is formed between the central electrode (13) and an end section of the grounding electrode (31); and a spark plug cap (40) connected to a front end section of the metal housing (22), wherein the spark plug cap (40) covers the center electrode (13) and the end section of the grounding electrode (31) from the front and has a plurality of through holes (41) in an area in front of the grounding electrode (30), wherein in a cross-section enclosing the axis line, the candle cap (40) encloses an extension section (53) in at least one section of a region between a first imaginary straight line (49) and a second imaginary straight line (50), the first imaginary straight line (49) passes through a front end of the end section of the grounding electrode (32) and is perpendicular to the axis line, the second imaginary straight line (50) passes through a rear end of one of the inner open ends (47) of the plurality of through holes (41) that is closest to a front end of the spark plug (10) and is perpendicular to the axis line, the extension section (53) is a section in which a minimum distance from an outer surface (43) to an inner surface (44) of the spark plug cap (40) increases with increasing distance in a direction from back to front, and a cross-sectional area of ​​a region (51) surrounded by the extension section (53) along a plane perpendicular to the axis line decreases with increasing distance in the rear-to-front direction, wherein the rear ends (47) of the inner open ends (47) of the plurality of through holes (41) are in contact with the extension section (53), and in the cross-section enclosing the axis line, a line showing an inner surface (44) of the extension section (53) has a substantially constant radius of curvature.

A surge arrester for DC mains comprises a spark gap for extinguishing mains follow currents in the DC mains, the current intensity of which is equal to or greater than a specified current threshold, and a triggerable extinguishing aid assigned to the spark gap, which is set up to extinguish mains follow currents below the specified current threshold. The surge arrester further comprises an evaluation module for triggering the extinguishing aid, the evaluation module being set up to trigger the extinguishing aid as soon as at least two tripping conditions are fulfilled which are characteristic of the fact that the spark gap alone 10 cannot extinguish the mains follow current within a specified time duration. Furthermore, a method of operating such a surge arrester is described.

Lighting device for simulating an ignition spark, characterized in that a conventional spark plug serves as a housing and electrical conductor, wherein at least one semiconductor lighting element (LED) is arranged in the spark gap between the center electrode and the ground electrode, which is electrically connected to the said electrodes.

A spark plug (10) comprising: a center electrode (13); a metal casing (20) which insulates the center electrode (13) at an outer circumference of the center electrode (13); a ground electrode (30) which is arranged such that a spark gap (33) is formed between the center electrode (13) and an end section of the ground electrode (31); and a spark plug cap (40) which is connected to the metal casing (20), wherein the spark plug cap (40) covers the center electrode (13) and the end section of the ground electrode (31) from the front and has a through-hole (41) in a region in front of the ground electrode (30), wherein an inner surface of the spark plug cap (44) has at least one burr (52) in a first region (45) which is located in front of an inner open end of the through-hole (48).

The invention relates to a horn spark gap assembly (20) comprising a horn spark gap (18) and an quenching chamber (22) associated with the horn spark gap (18). The horn spark gap (18) has two electrodes (24, 26) between which an arc (28) can be generated, which propagates into the quenching chamber (22). A thermally triggered activation element (32) is associated with one of the electrodes (24, 26) and is configured to be triggered by the arc (28) that has propagated into the quenching chamber (22). The thermally triggered activation element (32) includes a solder joint (34) configured to disconnect the corresponding electrode (24) of the horn spark gap (18). The invention further relates to a disconnect module (12) and a method for operating a horn spark gap assembly (20).