26 results about "Electric arc discharge" patented technology

This invention provides an electrode device having a support for engaging and holding a graphite electrode used in the manufacture of a quartz crucible via arc discharge. The electrode device is characterized in that the outermost surface layer of the support, at the portion adjacent to the graphite electrode when the support is engaged with the graphite electrode, has an anti-fouling film. Thus, an electrode device is provided that can suppress contamination from the support, shorten the lifespan of the graphite electrode, and reduce manufacturing costs.

An example of a sliding contact strip capable of suppressing frequent arc discharges is disclosed. [Solution] The sliding contact strip 1 is provided with an insulating portion 4 on the sliding contact surface 3 that has a higher electrical resistance than the conductive portion (parts other than the insulating portion 4), and the insulating portion 4 is provided only on a portion of the sliding contact surface 3 in the width direction. Therefore, the occurrence of arc discharge between the trolley wire and the insulating portion 4 can be suppressed, and even if arc discharge occurs between the trolley wire and the conductive portion 5, the continuous and frequent occurrence of such arc discharge can be suppressed. Consequently, premature damage to the sliding contact strip 1 can be suppressed.

The utility model discloses a single wall carbon nanotube carbon gas pre pyrolysis device relates to single wall carbon nanotube's preparation method technical field. The single wall carbon nanotube carbon gas pre pyrolysis device, the air inlet of containing carbon gas is installed to the air inlet end of vacuum cavity, and the product outlet is fixedly installed to the exhaust end of vacuum cavity, and the product outlet is installed to the product collection container away from one end of vacuum cavity, and the scheme promotes preparation efficiency: on the basis of traditional chemical gas phase deposition method, increases the heater and arc discharge device, makes containing carbon gas decompose under the double action of high temperature and arc discharge, accelerates the speed that containing carbon gas and catalyst decompose for atom, compares with traditional method, under the same carbon base gas flow, can more, faster produce single wall carbon nanotube, and the preparation efficiency of single wall carbon nanotube is improved greatly, effectively solved the problem of low yield of high quality single wall carbon nanotube.

To provide a system and a method for reducing potential arcing of a UV lamp and for adapting operation of a UV lamp at various altitudes and air pressures.SOLUTION: A system 100 includes an ultraviolet (UV) lamp including one or more UV light emitters. The UV light emitters are configured to emit UV light 110 in an environment. A power source is configured to supply power to the UV lamp. A pressure sensor is configured to detect an ambient air pressure in the environment. A temperature sensor is configured to detect an ambient air temperature in the environment. A control unit is configured to analyze air pressure data regarding the ambient air pressure and air temperature data regarding the ambient air temperature in relation to a breakdown voltage for the UV lamp. The control unit is further configured to modify at least one aspect of the UV lamp in response to the ambient air pressure and air temperature reaching a breakdown threshold that is less than the breakdown voltage.SELECTED DRAWING: Figure 1

This utility model discloses an electrostatic discharge (ESD) protection component, characterized by comprising an insulating base and a first conductive contact and a second conductive contact located on the insulating base; the first conductive contact has a first acute-angled side, and the second conductive contact has a second acute-angled side, with the tips of the first and second acute-angled sides facing each other; the first conductive contact is used to connect to the target protection circuit, and the second conductive contact is used to connect to the electrical ground. This utility model sets the first and second conductive contacts to connect to the target protection circuit and the electrical ground of the electronic product, respectively; when static electricity is conducted to the target protection circuit, the static electricity is guided to the tip of the first acute-angled side, thereby ionizing the air at that point, achieving arc discharge, and then conducting the static electricity to the second conductive contact and then to the electrical ground, achieving ESD protection and reducing the production cost of electronic products.

This invention relates to the field of precious metal special material preparation and processing technology, and discloses a composite special gold wire suitable for high-temperature and high-density packaging and its preparation method. The gold wire contains the following components by weight percentage: 0.5% to 1% Pd, 0.05% to 0.1% Al, 0.005% to 0.015% Ga or Ge, 0.001% to 0.005% La, Ce, Yb or Sm, with the balance being pure gold. The gold wire is coated with a layer of thermosetting resin by impregnation and baking, and an inorganic phase layer mainly composed of silicon dioxide is coated on the thermosetting resin by electrophoretic deposition. This invention achieves a strong bond between the silicon dioxide inorganic phase layer and the gold wire by coating the gold wire with a thermosetting resin layer, making it less prone to detachment. Furthermore, by optimizing the core material composition, the resulting composite special gold wire exhibits superior long-term reliability when bonded to aluminum pad electronic components under high-temperature and complex service environments compared to conventional gold wires. Moreover, the wire arc maintains excellent rigidity in multi-pin, 3D stacked packaging environments, reducing short-circuit failures caused by physical contact or arc discharge between adjacent gold wires.

This invention relates to the field of carbon nanotube technology, and discloses a method and apparatus for preparing horizontally arrayed carbon nanotubes. A gaseous carbon source is used as the reactant, and transition metal vapor is used as the catalyst. The preparation is carried out using an electric arc discharge method. The electric arc is located between two energized electrodes in a reaction vessel, with the two electrodes positioned vertically opposite each other. The catalyst powder is magnetically attracted to the bottom of the upper electrode. When struck by the electric arc, the catalyst powder heats up, loses its magnetism, and falls, contacting the electric arc in the air and vaporizing. This not only ensures more thorough contact with the arc, generating more transition metal vapor, but also changes the vapor generation location from a single point on the electrode to the entire electric arc. The reaction location completely coincides with the transition metal vapor generation location, thus overcoming the problem of catalyst absence at some reaction sites. Simultaneously, the electric arc rotates in the magnetic field rather than being fixed at the same position on the electrode, and the contact area with the reactant is larger, overcoming electrode ablation problems and improving reaction efficiency.

The utility model discloses a micro line pair board horizontal female connector for power battery, including female casing and male terminal, be equipped with two layers of terminal hole in female casing, the first male terminal corresponds a plurality of root on the layer, the second male terminal corresponds a plurality of root on the layer, and the first male terminal and the second male terminal include the connecting portion and the insertion portion respectively, be equipped with support platform in the tail of female casing, and the support platform protrudes from the tail end surface of female casing, and each first male terminal is supported by the support platform after the terminal hole from the top of support platform stretches, and the connecting portion is crossed the support platform downwards, and each second male terminal stretches downwards after the terminal hole from the bottom of support platform stretches, be equipped with the baffle between the adjacent terminal hole on the support platform, and the adjacent first male terminal is separated from each other through the baffle. Thus can increase the creepage distance between the terminal, effectively blocks the electrical interference between the terminal, avoids the terminal more crowded, leads to the arc discharge and the electric leakage phenomenon of appearing because the creepage distance is too short easily.

This technology provides a way to reduce damage to terminals caused by arc discharge. [Solution] The connector comprises a female terminal having an insertion opening, a first contact portion formed inside the insertion opening, and a second contact portion formed inside the insertion opening and biasing in a direction substantially perpendicular to the biasing direction of the first contact portion, and a male terminal 10 that is inserted into the insertion opening, having a pair of first side surfaces 12 that can contact the first contact portion, and a pair of second side surfaces 14 that can contact the second contact portion. The second contact portion contacts the male terminal on the insertion opening side of the first contact portion, and the first side surfaces 12 have a first tapered surface 12a that slopes to taper toward the tip. The second side surfaces 14 have a second tapered surface 14a that slopes to taper toward the tip.

The utility model discloses a lower electrode subassembly and plasma processing device, lower electrode subassembly includes: pedestal for carrying wafer, focus ring is set up on the pedestal and is set around the wafer, and the top outer edge of focus ring is equipped with the fillet transition, and the radius of fillet is greater than or equal to 0.4mm. The utility model can reduce the probability of arc discharge at the top outer edge of focus ring and the accidental fragmentation of the top outer edge of focus ring due to the excessively high local temperature.

The application relates to a kind of power equipment abnormal inspection methods based on unmanned aerial vehicle, comprising: control unmanned aerial vehicle flies to target power equipment area, adjusts unmanned aerial vehicle posture and aligns target power equipment;The continuous pulse signal data acquisition of target power equipment area is carried out, and the pulse signal data reflecting light intensity change is acquired;The acquired pulse signal data is processed in space-time aggregation, and discrete pulse signal data is converted into pulse image with spatial structure, reflecting the brightness change distribution of target power equipment area;The pulse image is analyzed by target identification, to detect whether there is arc discharge phenomenon in power equipment area;According to arc detection result, the abnormality of power equipment operation state is determined, and alarm information is generated when arc discharge is detected.The application also relates to a kind of power equipment abnormal inspection system based on unmanned aerial vehicle.The application can improve the detection accuracy and timeliness of transient arc phenomenon while ensuring the safety of inspection.

The utility model discloses a kind of DC contactors, it is related to electrical switch technical field.In it, DC contactor is equipped with isolation cavity by being away from the one end of contactor body contact in shell, thereby increased the electrical clearance between contactor body and shell bottom, by can significantly reduce the risk of high-voltage side arc discharge and breakdown, effectively improve the insulation performance of DC contactor, reduce the probability of high-voltage side voltage diffusion situation occurs through DC contactor to peripheral electrical components;While being equipped with protruding structure in isolation cavity, in the height direction of DC contactor, the both ends of protruding structure are respectively connected on the two side walls of isolation cavity upper and lower interval arrangement, thereby by the setting of protruding structure in the two side wall surfaces of isolation cavity along the height direction of DC contactor respectively form a tortuous path, thereby can increase creeping distance, so that the insulation performance of DC contactor can be further improved.

A method, system, medium, and device for on-load tap changer fault diagnosis based on ultrasonic-vibration cross-modal signal correlation characteristics are disclosed. The method employs a piezoelectric ultrasonic-vibration fusion sensor to synchronously acquire composite electrical signals, including arc discharge ultrasonic signals and mechanical vibration signals, at the physical layer. The synchronously acquired composite electrical signals undergo adaptive separation processing to extract ultrasonic and vibration signal components separately. The vibration signal components are subjected to Hilbert transform to obtain their envelopes, and adaptive threshold detection is used to identify the start and end times of the switching action. Arc pulse events are identified, and timing parameters are extracted, marking the arc pulses to the corresponding mechanical action phases. The correlation characteristics between the arc pulses and the mechanical vibration response are calculated to construct a correlation feature vector. Based on the correlation feature vector and the original timing signals, a bidirectional gated recurrent unit neural network is used for joint diagnosis, outputting the fault type and health status.

The present invention provides a power supply system capable of identifying a location where series arc discharge or parallel arc discharge occurs. It is configured that a noise detection means is provided in a positive-electrode-side wiring portion or a negative-electrode-side wiring portion and is located closer to a power supply module than a connection portion with a bypass wiring portion, and an arc determination unit determines that series arc discharge has occurred closer to the power supply module than the bypass wiring portion when a condition (1) or (2) below is satisfied. (1) A series switch unit is closer to the power supply module than the bypass wiring portion, and the arc detection unit detects series arc discharge and the noise detection means detects predetermined current noise or predetermined high frequency noise in a state where the series switch unit is closed and a parallel switch unit is closed. (2) A series switch unit is closer to a power conversion device than the bypass wiring portion, and the arc detection unit detects series arc discharge and the noise detection means detects predetermined current noise or predetermined high frequency noise in a state where a parallel switch unit is closed.

The application discloses an in-situ preparation method of carbon nanotube / silicon composite material and belongs to the technical field of lithium ion battery negative electrode materials. A solution containing a carbon source and a catalyst is taken into a plasma reactor by a carrier gas and a reducing gas, and a silicon source gas is introduced at the same time; the material sequentially passes through a first double-electrode area (20-50 kW), arc discharge is cracked to generate carbon nanotubes and deposit silicon nanoparticles; then passes through a second double-electrode area (10-19 kW) to remove amorphous carbon impurities; and then passes through a third double-electrode area (1-9 kW) to reduce sp 3 Defects in the carbon nanotubes; after the reaction is finished, liquid nitrogen spraying, low-temperature nitrogen or water spraying is used for rapid cooling, gas flow grading or vibration screening is carried out to collect the carbon nanotube / silicon composite material. The in-situ growth of the carbon nanotubes, the silicon deposition, the removal of amorphous carbon and the repair are continuously completed in the same reactor, the reaction only takes a few minutes, the process is simple, the method is suitable for large-scale production, and the obtained composite material can be used for lithium ion battery negative electrodes.

A flash lamp (1) includes: a lamp housing (2) that is sealed and filled with an inert gas, a cathode (20) and an anode (30) that cause arc discharge, a trigger electrode (40) that performs preliminary discharge prior to the arc discharge, and a plurality of sparkers (60, 70) that promote ionization for starting the arc discharge. The plurality of sparkers (60, 70) are disposed at a distance from each other. At least one of the plurality of sparkers (60, 70) can be disposed close to the cathode (20). Furthermore, a plurality of the trigger electrodes (40) can be provided.

Embodiments of the present application disclose a kind of insulator state identification method and device, equipment and storage medium, method includes: the leakage current signal of insulator is collected;Leakage current signal is carried out empirical mode decomposition, separates out power frequency component and high frequency component;Power frequency component is carried out discharge state discrimination based on zero-crossing detection and waveform integrity, to determine local arc discharge, long arc discharge or no significant discharge;High frequency component is carried out pulse event detection and statistics based on dynamic threshold, obtain pulse event statistical result, pulse event statistical result includes total number of pulse events and pulse average peak value;Based on discharge state and pulse event statistical result, determine the risk level of insulator by decision fusion logic, and trigger the early warning of corresponding level.The above-mentioned manner realizes the improvement of discharge state identification accuracy and early risk warning, significantly improves the accuracy and foresight of early warning.

The application relates to a connector, comprising a buckle, an elastic member and a locking member. The buckle is arranged to rotate along an axis of rotation relative to a first housing. The buckle has a free position, a first operating position and a second operating position relative to the first housing. The first operating position is located between the free position and the second operating position. The elastic member is arranged between the buckle and the first housing, and the elastic member generates an elastic force on the buckle. The elastic force is used to reset the buckle to the free position. The locking member is movably connected to the first housing, and the locking member has a first position and a second position relative to the first housing. In a time period between a time point at which the signal terminal is separated and a time point at which the power terminal is separated, an operation time for switching the locking member from the first position to the second position is included, so that necessary response time of a control module and a switching device is ensured, and when the first power terminal and the second power terminal are separated, current is prevented from being too large, and arc discharge is prevented.

This invention discloses a far-field measurement system and method for the spatial radiation field of a mobile suspended conductor arc discharge, comprising: a mobile suspended conductor arc discharge device for controlling the arc discharge of the suspended conductor; a signal receiving module for receiving the broadband far-field electromagnetic radiation signal generated by the discharge and converting it into a radio frequency (RF) signal; a signal conditioning module for conditioning the RF signal; a signal analysis module for analyzing the RF signal using a spectrum analyzer and outputting data analysis results; a vector network analyzer for verifying the link matching status between modules; a calibration module for calibrating the device based on a standard reference signal; a data processing module for synthesizing the standard uncertainty based on the calibration data; and simultaneous measurement of four measurement traces: peak value detection, average value detection, sampled value detection, and root mean square (RMS) detection, and calculation of the electric field intensity distribution based on the four measurement traces. This achieves high-precision measurement of the far-field characteristics of the spatial radiation of the arc discharge.

The utility model discloses an overhead line operation robot, its advantage is in the equal potential system's drainage guide pole and set up in the bottom of foot support in near first go and connect with overhead line, and the tension reset mechanism keeps drainage guide pole and overhead line contact, ensures that operation robot is in the landing with overhead line always in the equal potential state, forms stable equipotential after walking wheel rides to overhead line, and drainage guide pole is driven to separate from overhead line by drive mechanism, and is positioned with limiting device, avoids the arc that appears to the long -time friction of drainage guide pole and overhead line in operation movement, removes the limit after operation, and drainage guide pole rotates and restores the connection with overhead line and is kept by the tension reset mechanism, ensures that the operation robot and overhead line also always in the equal potential state in the flight, and the equal potential system is closed or hibernate after separating from overhead line, thereby avoids appearing the electric arc discharge phenomenon, effectively protects the component on the fuselage from the damage of electric arc discharge, and ensures the safety and reliability of operation process.

This invention provides a measurement switch that is easy to maintain and replace, relating to the field of low-voltage electrical technology. It includes a housing, a switch, a time-delay component, an integrated module, and a linkage component. This invention employs a modular design concept, allowing the integrated module to be pluggably installed on one side of the housing. A time-delay component is connected in series in the power supply circuit between the secondary side of the switch and the integrated module. Simultaneously, a linkage component connects the moving parts of the switch and the time-delay component. Firstly, the integrated module is pluggable, so when the internal components of the module reach the end of their lifespan or require a functional upgrade, maintenance can be completed simply by plugging and unplugging the integrated module without disassembling the switch body or disconnecting the primary main circuit. Secondly, the time-delay component delays the energization of the integrated module after closing, effectively avoiding the strong electromagnetic interference and voltage surges generated by the primary side arc discharge at the moment of closing.

Disclosed are a plasma etching apparatus, an etching machine, a focus ring (10), and its jacking structure, the focus ring (10) comprising a plurality of ring bodies arranged in a stacked manner, each of the ring bodies being independently arranged, the axial size of the uppermost ring body (1) being larger than the maximum jacking height that the focus ring (10) can tolerate, and during the use of the separate-type focus ring (10), each of the ring bodies can be jacked, thereby dividing the large space below the original focus ring (10) after jacking into several smaller spaces, each of which is connected only by small slits between the structures, limiting the concentration and activity of charged particles in the plasma within the smaller spaces, thereby preventing arc discharge phenomena and achieving the objective of avoiding problems such as spark marks or cracking of the focus ring (10).

Systems and methods for monitoring current through a high-voltage cable and locating one or more sources of electrical arcing by using a high-frequency current transformer embedded in a high voltage cable connector are disclosed herein. The current monitoring apparatus includes a cable connector comprising a channel configured to receive a feedthrough associated with a vacuum chamber; and a signal measurement device configured to measure a current passing through an unshielded portion of a cable embedded in the feedthrough when the feedthrough is inserted in the channel, wherein the signal measurement device is embedded in or coupled to an external surface of the cable connector and is configured to encircle a portion of the unshielded portion of the cable when the feedthrough is inserted in the channel of the cable connector.

A method for repairing a seal fin provided in a rotor of a steam turbine comprises: an overlay welding step for forming an additional fin at a damaged part of the seal fin by performing overlay welding at the damaged part; and a tempering treatment step for performing, on a heat-affected part which occurs in the seal fin due to the overlay welding, tempering treatment by inputting heat by arc discharge or laser.