66results about How to "Avoid open circuit" patented technology

The invention relates to a touch control electrode, a display panel and a display device. The touch control electrode comprises a plurality of first electrodes arranged in the first direction, and a plurality of second electrodes arranged in the second direction, wherein the first direction is perpendicular to the second direction, the adjacent first electrodes are connected through first conductive parts, and an insulating layer is arranged on each first conductive part; the adjacent second electrodes are connected through second conductive parts, each second conductive part is arranged on the corresponding insulating layer and comprises a plurality of wires, the width of at least one wire is smaller than a first preset value, and the wires with width smaller than the first preset value are used for electrostatic discharge. By the adoption of the technical scheme, circuit opening caused by electrostatic discharge can be avoided in the touch control electrode, and normal transmission of signals in the touch control electrode is guaranteed.

The invention is applicable to the printing and displaying technology field and provides a preparation method for a trapezoid pixel Bank structure and an OLED device. The preparation method for the trapezoid pixel Bank structure comprises steps of providing a TFT backboard, preparing a Bank layer on the electrode of the TFT backboard, performing two times of exposure, development and etching on the Bank layer to form an inverted trapezoid pixel area, and obtaining a trapezoid pixel Bank structure having the trapezoid Bank. The preparation method for the trapezoid pixel Bank can effectively compensate the transverse corrosion for the pixel Bank by the developing liquid and corrosive liquid so as to obtain a trapezoid pixel Bank structure having an inclination angle of Alpha, overcome the affect on the uniformity of the member pixel caused by the over-etching on the bottom of the Bank, avoid the member open circuit and reduce the aperture opening ratio of the member.

The invention discloses a film sticking equipment. The film sticking equipment comprises a conveying device for conveying printed circuit boards to be stuck with films, a film pressing roller, a liquid spraying roller and a liquid absorbing roller, wherein the liquid spraying roller humidifies the surface of the printed circuit board; the liquid absorbing roller homogenizes the liquid distribution at the surface of the printed circuit board; and the film pressing roller presses a film the homogenized printed circuit board surface. In the film sticking equipment, the liquid spraying roller and the liquid absorbing roller are additionally arranged; the liquid spraying roller humidifies the surface of the printed circuit board and the liquid absorbing roller homogenizes the liquid distribution at the surface of the printed circuit board, so that air bubbles caused by concave-convex surface of the printed circuit board and gaps between circuits are removed, absolute vacuum is ensured to be formed between the surface of the printed circuit board and the stuck film when the film is stuck, and the film sticking yield is improved. Simultaneously the invention further provides a film sticking process using the film sticking equipment.

The invention relates to a harmless treatment method of arsenic-containing flue dust, and belongs to the environment engineering and science field. The method comprises the following steps: adding a dilute acid and hydrogen peroxide in a water extracting process of the arsenic-containing flue dust to realize acidic oxidation extraction, adding high valence iron having a weight 0.8-2.5 times the weight of arsenic to the obtained extraction liquid to form insoluble arsenic acid iron slag, carrying out high valence iron salt dearsenification, adding high valence iron having a weight 3-6 times the amount of arsenic to the obtained dearsenified high valence iron salt filtrate, adjusting the pH value to 6-9 by using ammonia water, and carrying out depth adsorption dearsenification to obtain a filtrate having an arsenic content lower than a discharge standard of 0.5mg / L to realize the harmless treatment method of arsenic-containing flue dust. The method fully utilizes the high solubility characteristic of pentavalent arsenic, allows the water consumption in the extraction process to be lower than that in the prior art and the temperature of the reaction process to be lower than a boiling temperature, realizes the high extraction rate of arsenic, and reduces the water consumption and the energy consumption.

The invention discloses an unloading circuit module for an auxiliary power supply of a photovoltaic inverter system. The unloading circuit module comprises a solar panel, an input bus capacitor, the auxiliary power supply and the unloading circuit module. The unloading circuit module is electrically connected between the input bus capacitor and the auxiliary power supply; the unloading circuit module comprises a first resistor, a second resistor, a fourth resistor, a second switch tube and a photoelectric coupler; the first resistor is electrically connected between the input bus capacitor and a drain of the second switch tube; a source of the second switch tube is primarily grounded; a grid of the second switch tube is electrically connected to a collector of the photoelectric coupler; an emitter of the photoelectric coupler is primarily grounded; an anode of the photoelectric coupler is connected to an output end of the auxiliary power supply through the fourth resistor and a cathode of the photoelectric coupler is secondarily grounded. According to the unloading circuit module for the auxiliary power supply of the photovoltaic inverter system, provided by the invention, the problem of repeatedly starting and stopping the auxiliary power supply of the photovoltaic inverter is solved and the auxiliary power supply is started only when the power output by the solar panel reaches a certain value.

The invention discloses an intelligent self-energy-obtaining vacuum breaker. The intelligent self-energy-obtaining vacuum breaker comprises a base, a three-phase vacuum extinction chamber device, three high-voltage current mutual inductors and a spring energy storage operation mechanism, wherein the base is installed with a valve switching-on / off operation rod and an energy storage operation rod which are connected with the spring energy storage operation mechanism. The intelligent self-energy-obtaining vacuum breaker further comprises an intelligent controller for controlling the vacuum breaker; an energy obtaining device for obtaining electric power from a high-voltage operated circuit and supplying the electric power to each power utilization unit is mounted at the top end of the base; a signal processing unit for processing signals output by the energy obtaining device and signals output by the high-voltage current mutual inductors is mounted on the base; the energy obtaining device is electrically connected with the upper end of the vacuum extinction chamber device; the energy obtaining device and the high-voltage current mutual inductors are connected with the signal processing unit; and the signal processing unit is connected with the intelligent controller. The intelligent self-energy-obtaining vacuum breaker provided by the invention has the advantages of compact structure, novel and reasonable design, high reliability, good security property, strong practical applicability, and high popularization and application values. The intelligent self-energy-obtaining vacuum breaker is good for prompting the development of an automatic distribution network.

The invention relates to a high-temperature fused salt battery which comprises a positive pole, pasty dual electrolyte and a negative pole, wherein the positive pole is exposed in air, the pasty dualelectrolyte is prepared from fused salt and solid electrolyte powder by mixing, the fused salt is potassium carbonate and / or sodium carbonate, the solid electrolyte powder is zirconium oxide micron powder containing yttrium oxide, and the negative pole is separated from the positive pole by the pasty dual electrolyte. The high-temperature fused salt battery disclosed by the invention is a high-temperature fused salt battery which can be applied to large-scale power grid energy storage and is based on the fused salt and the solid electrolyte powder material. The pasty dual electrolyte disclosedby the invention can be easily prepared from the fused salt and the solid electrolyte powder through direct mixing, so that the pasty dual electrolyte has the advantages of higher oxygen ion conductivity, lower fluidity and good filling ability; furthermore, the short circuit and open circuit phenomena between the positive pole and the negative pole of the battery are effectively avoided, circular charge-discharge property of the battery is remarkably improved, and the processing manufacturing cost of the high-temperature fused salt battery is obviously reduced.

The invention provides an array substrate comprising a plurality of scanning lines, a plurality of data lines, a plurality of pixel units crossing with the scanning lines, a plurality of public lines, and a main public line. The public lines penetrate the scanning lines and cross with the data lines, and every public line is connected to the main public line arranged outside a pixel area formed by the pixel units; the main public line and the scanning lines extending to the periphery of the pixel area are correspondingly arranged on two sides of the pixel area. Meanwhile, the invention further provides a liquid crystal display panel with the array substrate. By means of the main public line arranged corresponding to the scanning lines extending to the periphery of the pixel area, crossing between the main public line and the scanning lines can be avoided, and short circuit between the main public line and the scanning lines caused by ESD breakdown can be avoided; meanwhile, the main public line and the public lines can be arranged in one plane, so that breaking of the main public line and public lines can be avoided.

The invention relates to a special cable for concrete processing machinery. The special cable comprises a cable core, wherein an outer wall of the cable core is provided with an insulating layer; an outer wall of the insulating layer is provided with a soft filling layer; the soft filling layer adheres to an inner wall of an embedded tube; an outer side of the embedded tube is provided with a fixed tube; a filler is arranged between the fixed tube and the embedded tube; an outer wall of the fixed tube is provided with an anti-static layer; an outer side of the anti-static layer is provided with a waterproof layer; an outer side of the waterproof layer is provided with an anti-expansion buffer layer; a plurality of buffer springs are arranged in an inner cavity of the anti-expansion buffer layer; and an outer side of the anti-expansion buffer layer is provided with a fireproof layer. Through adoption of the special cable, the overall strength of the cable is enhanced; the pressure resistant performance of the cable is enhanced; the overall structure of the cable is prevented from being broken easily by stretching; the phenomenon of circuit break is avoided; the damage resistance and corrosion resistance of a surface layer of the cable are enhanced effectively; the waterproof and fireproof performance is enhanced; damage to the cable caused by static electricity is reduced; and the service time of the cable is prolonged. The special cable is novel in structure, and has high practicability.

The invention relates to a high-temperature-resistance oxygen sensor device. The high-temperature-resistance oxygen sensor device comprises an oxygen sensor, a heat-insulating insulating pipe and a protective sealing cylinder; one end of the oxygen sensor is connected with one end of the heat-insulating insulating pipe, and the protective sealing cylinder is arranged on the outer side of the heat-insulating insulating pipe in a sleeving mode; the oxygen sensor is a detecting main body, one end of the oxygen sensor is connected with a plurality of cables, a plurality of through holes are formedin the heat-insulating insulating pipe in the length direction of the heat-insulating insulating pipe, and the multiple cables penetrate through the multiple through holes in a one-to-one correspondence mode; and the space between the protective sealing cylinder and the heat-insulating insulating pipe is filled with a heat-insulating material, one end of the protective sealing cylinder is connected with the oxygen sensor, and sealing is formed by the other end of the protective sealing cylinder and the heat-insulating insulating pipe through a plugging plate. According to the high-temperature-resistance oxygen sensor device, the working life of a common oxygen sensor is effectively prolonged, the operation damage rate of the high-temperature-resistance oxygen sensor device in the high temperature environment is decreased, and normal transmission of a measuring signal value is ensured.

The invention discloses a method for manufacturing an outer circuit of a rigid-flex board, comprising the steps of: A. performing wetting treatment on the rigid-flex board; cm 2 ; C. Perform air pressure treatment on the rigid-flex board; D. Expose, develop, etch, and remove the film on the rigid-flex board in sequence. Through the combination of the wetting treatment and the air pressure treatment of the present invention, the problem of inaccurate dry film pressing on the steps of the soft and hard composite boards bonded by ordinary film laminating machines is solved, the open circuit of the steps is avoided, and the mass production of products with steps is realized. .

The invention provides a novel smart testing junction box. The junction box comprises an insulating base and multiple groups of wiring terminals, wherein each group of wiring terminals comprise a wiring conductor arranged in the insulating base, a wiring jack formed in the end part of the wiring conductor, a plurality of crimping screws and a short contact tag which is detachably connected betweenthe two crimping screws; a wiring through hole which is used for connecting the end part of a conductor and exposed from the wiring jack is formed in the insulating base; the short contact tag is positioned outside the insulating base; the end parts of the crimping screws are in threaded connection with the wiring conductor and electrically conducted; each group of wiring terminal further comprises a connecting conductor arranged on the joint of the crimping screws and the short contact tag, the end, far from the wiring conductor, of the connecting conductor extends out from the insulating base, and is contacted with the short contact tag; the other end of the connecting conductor is contacted with the wiring conductor; and the connecting conductor and the short contact tag are locked bythe crimping screws to ensure the contact stability between the wiring conductor and the short contact tag, and the circuit break phenomenon between the wiring conductor and the short contact tag canbe effectively avoided.

The present invention discloses a motor stator and a manufacturing method thereof, stator pieces of a motor stator, a sewing machine energy saving motor of a motor stator and a sewing machine of a motor stator. The stator comprises a plurality of stator posts and stator windings, the stator posts comprise outer edge plates and wrapping posts, the outer edge plates and the wrapping posts enclose open grooves configured to allow the stator windings to pass through, each stator post comprises one stator post main body formed by stacking a plurality of stator pieces and insulation pieces arrangedat two end faces of the stator post main body, each stator piece comprises one outer edge portion and one winding portion, each outer edge portion and each winding portion correspondingly form one outer edge plate and one wrapping post after the stator pieces are stacked, the outer edge plates of all the stator posts are spliced in order from front to back to enclose a cylindrical shape, and opengrooves of adjacent stator posts are butted joint. The winding is convenient and simple, the stator pieces can be more compact when blanking and typesetting are performed, waste is less, the dimensionof the mold is smaller, and the cost is lower. The present invention provides a manufacturing method of the motor stator, stator pieces forming the stator, a sewing machine energy saving motor of a motor stator and a sewing machine of a motor stator.

The invention discloses a four-pole-ear pole plate, a four-pole-ear pole group and a four-pole-ear storage battery. The four-pole-ear pole plate comprises a plate body and pole ears, wherein four pole ears are fixed on the peripheral side walls of the plate body; the distances among the pole ears along the edge of the plate body are equal. The four-pole-ear pole group is composed of multiple layers of positive pole plates and negative pole plates in an alternative arrangement and lamination mode, wherein baffles are arranged between the positive pole plates and the negative pole plates; bus bars form four groups of positive and negative bus bars which are distributed at the periphery of the pole group; a group of positive and negative bus bars are distributed on each side wall of the pole group. The four-pole-ear storage battery comprises a sealed battery outer shell and electrolyte, wherein eight terminal holes are formed on the peripheral side walls of the outer shell; positive and negative terminals are respectively led from the terminal holes so as to form four groups of positive and negative terminals; each side wall of the peripheral walls of the outer shell is respectively provided with a group of positive and negative terminals. According to the invention, the battery charging and discharging cycle life is prolonged; the battery is prevented from expanding because of water loss; the using safety and high-current discharge performance are improved.

The invention relates to a pair of pliers, which comprises a pliers head and a pliers handle, wherein the pliers head is provided with a first pliers element and a second pliers element, a first pliers jaw element and a second pliers jaw element are respectively arranged on the first pliers head element and the second pliers head element, the first pliers jaw element is provided with a first clamping surface, the second pliers jaw element is provided with a second clamping surface, a convex strip is arranged on the first clamping surface, and a groove is formed in the second clamping surface, wherein when the first pliers head element is combined with the second pliers head element, the convex strip can enter the groove, and when the first pliers head element is separated from the second pliers head element, the convex strip can be moved out from the groove. The pliers provided by the invention have the advantages that a metal wiring terminal is flatted through clamping by the convex strip and the groove, and the flattening clamping mode can ensure that the metal wiring terminal can still be effectively flattened through clamping after the pliers are frequently used, so that a conducting wire can be firmly fixed in the metal wiring terminal, and the occurrence of an open circuit phenomenon is prevented.

A generator rotor demagnetization and overvoltage protection device relates to an overvoltage protection device for a thyristor rectification excitation system. It includes a demagnetization switch, a peak overvoltage absorber, a non-linear resistor, a thyristor trigger, a thyristor, a diode, a current transformer, a linear resistor, and one end of the demagnetization switch and one end of the peak overvoltage absorber Connect the rectifier power supply after connection, the other end is connected to one end of the linear resistance, one end of the linear resistance and one end of the non-linear resistance, the other end of the linear resistance and the other end of the non-linear resistance are connected in parallel, and then one end of the diode and one end of the thyristor are connected, and the other end of the linear resistance is connected to the The SCR trigger and the SCR trigger are respectively connected to the other end of the SCR, the other end of the diode and one end of the current transformer, and the other end of the current transformer is connected to the other end of the peak overvoltage absorber and then connected to the rotor winding. The invention not only has strong demagnetization ability and fast demagnetization speed, but also has fast overvoltage protection action, can avoid rotor winding open circuit, and effectively prevent the occurrence of rotor winding insulation breakdown accidents.

In a lower substrate, a display apparatus having the lower substrate and a method of manufacturing the lower substrate, the lower substrate includes a pixel area and a circuit area. An image is displayed in the pixel area. A first signal electrode is disposed in a circuit area. A first insulating layer includes an opening, through which the first signal electrode is exposed. A second signal electrode is disposed on the first insulating layer in the circuit area, and spaced apart from the first signal electrode. A second insulating layer is disposed on the first insulating layer, and includes a contact hole, through which the first and second signal electrodes are exposed. A conductive layer electrically connects the first signal electrode to the second signal electrode. Therefore, a manufacturing process is simplified so that a yield of the lower substrate is increased.

The invention discloses a circuit board manufacturing method capable of preventing ink spillover. The method is characterized by drilling a through hole in a production board after early-stage pressing; then, metalizing the through hole through the copper plating and full-plate electroplating process; carrying out browning processing on the production board; filling the metallized through hole with resin ink; then, sticking away the resin ink protruding out of the board surface through a thin film; and baking the production board to cure the resin ink in the through hole. The method cancels the abrasive belt board grinding process by optimizing the production process, thereby avoiding the problem of large circuit board expansion and shrinkage and uneven copper thickness caused by abrasivebelt board grinding, and on the premise of guaranteeing the quality of the circuit board, effectively shortening the process, saving labor hours and reducing production cost.

The invention discloses an open circuit prevention electrical connector. A bridging block assembly is arranged between each single end bridging sheet of the electrical connector and the extending partof an adjacent three-end bridging sheet; a bridging block is used for connecting and conducting a pair of adjacent single end bridging sheets and the extending part of the three-end bridging sheet under the effect of bridging springs, so that a pair of adjacent transition inserting hole conductors are mutually conducted. When a CT secondary side conducting wire is connected with the pair of transition inserting hole conductors, two ends of a CT certain phase winding are bridged; the certain phase winding of the CT secondary side end form a closed loop; meanwhile, the transition inserting holeconductors on the three extending parts of the three-end bridging sheet are connected with grounding inserting hole conductors in grounding through holes. Therefore when the grounding inserting holeconductors are grounded, and the CT secondary side conducting wire and the pair of adjacent transition inserting hole conductors are connected, the CT certain phase winding forms the closed loop and is bridged with the ground; the CT secondary side open circuit can be prevented; the CT secondary side is grounded in one point in a concentrated way.

The invention relates to the technical field of automobile power steering, and discloses an EPS-based motor drive axle control and diagnosis protection system. It includes a logic control unit, a drive axle management unit, a drive axle, an EPS motor, and a current sampling unit; the logic control unit includes a logic control module, a communication module 1, and an AD sampling module; the drive management unit includes a logic signal receiving module, a logic signal amplification module, communication module 2, current collection and processing module, motor phase collection and processing module, voltage collection and processing module and fault diagnosis module. The invention guarantees a certain driving ability when the voltage is low, so that the EPS can operate effectively, and the fluctuation of the power supply voltage is small; and the current sampling is carried out on the three-phase circuit of the motor, and the open circuit, short circuit and overcurrent of the motor phase are realized by diagnosing the current value Diagnosis of faults, etc., and can perform gate drive shutdown detection of each FET of the drive bridge, VDS monitoring of each FET of the drive bridge, and diagnosis of the short circuit of the drive bridge to the power supply.

The invention provides a generator rotor de-excitation and overvoltage protection device which relates to an overvoltage protection device of a silicon controlled rectifier excitation system. The generator rotor de-excitation and overvoltage protection device comprises a de-excitation switch, a peak overvoltage absorber, a non-linear resistor, a silicon controlled rectifier trigger, a silicon controlled rectifier, a diode, a current transformer and linear resistors. One end of the de-excitation switch is connected with one end of the peak overvoltage absorber and then is connected with a rectification power supply, and the other end of the de-excitation switch is connected with one end of each linear resistor and one end of the non-linear resistor. The other end of one linear resistor is connected with the other end of the non-linear resistor in parallel and then is connected with one end of the diode and one end of the silicon controlled rectifier. The other end of the other linear resistor is connected with the silicon controlled rectifier trigger. The silicon controlled rectifier trigger is further connected with the other end of the silicon controlled rectifier, the other end of the diode and one end of the current transformer. The other end of the current transformer is connected with the other end of the peak overvoltage absorber and then is connected with a rotor winding. According to the invention, the de-excitation capability is strong, the de-excitation speed is high, the overvoltage protection action speed is high, an open circuit of the rotor winding is avoided, and the insulation breakdown accidents of the rotor winding are effectively prevented.

The invention discloses a process for producing qualified arsenic oxide from an arsenic-containing material by a full-wet method. The process comprises the following steps that pressurizing, heating,oxidizing and leaching are carried out on the arsenic-containing material, a mixture of arsenic sulfide and an adhesive is added into arsenic-containing low-acid leached ore pulp for purifying, solid-liquid separation is carried out, an adsorbent and a calcium remover are added into the solution, cooling is carried out to normal temperature, standing and aging are carried out for 24-48 hours, andprecisely filtering is carried out; and sulfur dioxide is introduced into purified liquid, arsenic pentoxide is reduced and crystallized to obtain arsenic trioxide, and air drying and dehydration arecarried out to obtain qualified analytically pure arsenic trioxide products. The process has compact flow and full-wet method closed cycle operation, and has the advantages of work environment friendliness, safety and the like, the qualified arsenic trioxide products are produced at a time, the problem of arsenic open circuit is solved, productization of arsenic is achieved, the product value is greatly improved, and the process has good advantages in arsenic-containing material treatment and recovery.

The invention relates to a tight-contact temperature sensor allowing part insertion. The temperature sensor comprises a metal shell, a thermosensitive resistor, two telescopic contact pins with elasticity, an encapsulation material and a fixed plate, wherein the thermosensitive resistor is arranged in the metal shell; the two ends of each telescopic contact pin are a free end and a fixed end respectively, the two telescopic contact pins are mutually parallel, the free ends of the two telescopic contact pins are electrically connected with two electrode leads of the thermosensitive resistor respectively, and the fixed ends of the two telescopic contact pins are arranged outside the metal shell; the metal shell is filled with the encapsulation material, and the joints of the thermosensitiveresistor, the electrode leads of the thermosensitive resistor and the telescopic contact pins are encapsulated and fixed through the encapsulation material; and the fixed plate is fixedly connected with the fixed ends of the two telescopic contact pins. The temperature sensor can effectively make contact with a tested object, can realize rapid temperature detection, is simple and reliable in structure and high in practicability and can be widely applied to various occasions requiring temperature control and temperature compensation.

The invention discloses an electric permanent magnetic chuck controller with a circuit break protection structure. The controller comprises a permanent magnetic chuck controller body, an alarm assembly and a fixed slide rail. The alarm assembly is mounted in the middle of one side of the permanent magnetic chuck controller body, and the fixed slide rail is arranged in the permanent magnetic chuck controller body; and connecting pieces are installed at the front ends and the rear ends of the two sides of the fixed sliding rail correspondingly. Through the arrangement of a fixed sliding rail, a junction box a and a junction box b and the matched work of a limiting sliding groove, a good limiting effect can be achieved for a connecting rod, through the matched work of a gear column, a main track shoe, an auxiliary track shoe, a transmission rod and an adjusting knob, the gear column can be driven to rotate through the transmission rod, the gear column can be meshed with the top and the bottom of the surface of the main track shoe and the auxiliary track shoe so as to approach the middle, and the junction box a and the junction box b are matched to work so that the junction box a and the junction box b can play a better role in fixing the electric wire, the overall stability of the device is improved, and the phenomenon of open circuit can be effectively prevented.

The invention discloses a preparation method of a light-emitting device, including the steps of providing an initial pixel defining layer, comprising pixel defining areas, a first pixel defining layerand a second pixel defining layer on the first pixel defining layer, wherein the cross section of the first pixel defining layer is in the shape of an upright trapezoid, the cross section of the second pixel defining layer is in the shape of an inverted trapezoid, and the second pixel defining layer is composed of shape memory polymers; transforming the second pixel defining layer with inverted trapezoidal cross section into a second pixel defining layer with upright trapezoidal cross section, so as to obtain a transformed pixel defining layer; depositing a first functional layer in the pixeldefining area of the transformed pixel defining layer through a solution method; and after deposition of the first functional layer, recovering the second pixel defining layer with upright trapezoidal cross section into the second pixel defining layer with inverted trapezoidal cross section so as to recover the transformed pixel defining layer into the initial pixel defining layer, and depositinga second functional layer in the pixel defining area of the initial pixel defining layer by means of evaporation.

The invention discloses an intelligent self-energy-obtaining vacuum breaker. The intelligent self-energy-obtaining vacuum breaker comprises a base, a three-phase vacuum extinction chamber device, three high-voltage current mutual inductors and a spring energy storage operation mechanism, wherein the base is installed with a valve switching-on / off operation rod and an energy storage operation rod which are connected with the spring energy storage operation mechanism. The intelligent self-energy-obtaining vacuum breaker further comprises an intelligent controller for controlling the vacuum breaker; an energy obtaining device for obtaining electric power from a high-voltage operated circuit and supplying the electric power to each power utilization unit is mounted at the top end of the base; a signal processing unit for processing signals output by the energy obtaining device and signals output by the high-voltage current mutual inductors is mounted on the base; the energy obtaining device is electrically connected with the upper end of the vacuum extinction chamber device; the energy obtaining device and the high-voltage current mutual inductors are connected with the signal processing unit; and the signal processing unit is connected with the intelligent controller. The intelligent self-energy-obtaining vacuum breaker provided by the invention has the advantages of compact structure, novel and reasonable design, high reliability, good security property, strong practical applicability, and high popularization and application values. The intelligent self-energy-obtaining vacuum breaker is good for prompting the development of an automatic distribution network.

The invention discloses an extraction method of a filament potting compound for a cathode. The method comprises the following steps of 1) preparing a pickling solution, 2) preparing an alkaline solution, 3) etching a molybdenum barrel filled with the potting compound in the pickling solution, 4) performing neutralizing treatment on the etched potting compound in the alkaline solution, 5) washing the potting compound with deionized water and inspecting a PH (Potential of Hydrogen) value, and 6) drying the potting compound in an oven and keeping the potting compound with a drying bottle. The method has the benefits that 1, the surface quality of the potting compound is good, the surface fineness is good and the surface is free from obvious impurities; 2, the potting compound is good in uniformity and good in internal and external consistency; 3, an extraction technology of the filament potting compound for the cathode is high in stability; and 4, a melting point of the potting compound is appropriate and a use requirement of a traveling-wave tube cathode can be met after potting and sintering. The method is applied to a certain air-borne traveling-wave tube at an X band; the on-off times of a filament assembly are greatly increased; a short or open circuit of the filament assembly is avoided; and the service life of the cathode can reach over 15000h.

The invention discloses a packaging structure and packaging method for a chip. The packaging method comprises the steps of providing a substrate, wherein the surface of the substrate is provided witha placement film; a first chip is placed on the surface of the placement film; the first chip comprises opposite first surface and second surface; and the second surface is attached to the surface ofthe placement film; providing a plurality of second chips, wherein each second chip comprises a third surface and a first region; placing the second chips on the corresponding third surfaces towards the first surface, wherein the first regions of the second chips are overlapped with one part of the first chip and salient points are arranged between the first surface and the third surfaces of the first regions; and after placing the second chips, melting the salient points and electrically connecting the second chips and the first chip. The packaging structure formed through the method is relatively good in performance.

The invention discloses an improved boiler fan electrical system. The improved boiler fan electrical system comprises a base, an electric box body, a protective shell, an anti-folding structure and aT-shaped conductive column, wherein the electric box body is fixed at the top end of the base; the protective shell is inlaid at the center position of the surface of the electrical box body; rectangular accommodating cavities are formed in the positions, on the two sides of the protective shell, on the surface of the electric box body; circular through holes are formed in the inner side walls ofthe rectangular accommodating cavities; conductive copper sheets are arranged inside the rectangular accommodating cavities; placing grooves are formed in the positions, outside the conductive coppersheets, on the surface of the electric box body at equal intervals; the center of the top end of the electrical box body is provided with the anti-folding structure; a power line is arranged on the inner side of the anti-folding structure; and fixed suckers are arranged on the two sides of the top end of the electrical box body. According to the improved boiler fan electrical system, not only arethe anti-folding function of the wire body during the use of the electrical system and the electric leakage warning function of the electrical system achieved, but also the service life of the electrical system is prolonged.