554results about How to "Avoid sparking" patented technology

A socket includes: an input terminal configured to be electrically connected to an AC power source; an output terminal configured to output an AC signal of the AC power supply; a switch circuit electrically connected between the input terminal and the output terminal; a step-down circuit electrically connected to the input terminal and configured to reduce the amplitude of the AC signal; a shaping circuit electrically connected to the step-down circuit and configured to convert the AC signal with reduced amplitude into a shaped signal; and a control circuit electrically connected to the shaping circuit and the switch circuit and configured to control the switch circuit based on the shaping signal to enable the switch circuit performs switching operation only when the AC signal is at zero potential. A door includes the socket.

The invention relates to the electric receiving device of the electric vehicle. The current receiver for current in and return comprises the electric boots and the spring device, with two parallel parallelogram four linking bar structure and a separation structure, each four link structure made by the top and down lining bars hinged to the corresponding side plate and isolation plate, the separation structure composed of the air cylinder, air cylinder linking pole hinged to the cylinder piston end, lower linking brake bar with two rocker arms with the lower linking brake bar hinged to the lower linking bar pin shaft fixed to two side walls, one of the rocker arm hinged to the air cylinder linking bar, the other being the stop leaning against the low linking bar, each isolation plate bottom installed with an electric receiving boot, each four link bar structure having its top link bar connected to the said spring device. It solves the technical issues of current receiver contact or separation with the electric supply track smoothly, and the grounding issue of it.

The invention discloses a sustained circulating type method for adsorbing and recycling oil gas , which consists of the following steps: (1) adsorbing and recycling the oil gas by means of an active carbon bed in an adsorption tower; (2) the desorption and regeneration of the adsorption tower saturated is carried out; (3) the oil gas desorbed with high concentration enters a recovery tower to be absorbed by the body of liquid meager gasoline; (4) the tail gas in the recovery tower reenters the adsorption tower to be cycled in a sustaining way, wherein, at least two adsorption tanks in the adsorption tower alternately carry out adsorption and desorption generation, thus leading the oil gas adsorption to be carried out in a sustained circulating way, at the same time, the remote monitoring can be realized by using an automatic control program. The sustained circulating type method for adsorbing and recycling oil gas of the invention is characterized by high efficiency, low energy consumption, convenient operation and safe and reliable running.

A vehicle charging device configured such that both connectors 10, 20 are locked in a connected state by an advancing movement of a locking portion 43 of an actuator 41 to be locked to a locked portion 18 when the connection of the both connectors 10, 20 is detected by a connection detector 31 includes a locking portion detector 51 for detecting whether or not the locking portion 43 of the actuator 41 has advanced to a predetermined locking position, and a power supply controller 71 for setting a power supply path to an electrically conductive state on a condition that an advancing movement of the locking portion 43 to the predetermined locking position is detected by the locking portion detector 51.

PCT No. PCT/JP97/02517 Sec. 371 Date Jul. 25, 1998 Sec. 102(e) Date Feb. 25, 1998 PCT Filed Jul. 22, 1997 PCT Pub. No. WO98/03787 PCT Pub. Date Jan. 29, 1998A fuel filter (10) has a filter case (11), and a return path (25) is provided on the upper surface of the filter case (11). Return fuel discharged from a pressure regulator is supplied to the return path (25). The return path (25) having a closed lower end is provided with branch paths (26). The return fuel supplied to the return path (25) passes through the branch paths (26) and flows down into fuel reservoir along the outside peripheral surface of the filter case (11). Electrical charge on the surface of the filter case (11) is reduced when the return fuel flows along the outside peripheral surface of the filter case (11). Kinetic energy of the return fuel is reduced by the energy absorbing effect of the return path (25), the energy distributing effect of the branch paths (26), and the energy absorbing effect when the return fuel flows down along the outside peripheral surface of the filter case. Thus, fuel return sound waves from the returning fuel dropping into the fuel reservoir are reduced.

The present invention relates to an immersion-liquid-type battery compartment temperature control system comprising an immersion-liquid-type battery compartment; a first cooling pipe; a second cooling pipe; a third cooling pipe; a temperature sensor which is disposed on the battery pack side of the immersion-liquid-type battery compartment and is used for detecting battery pack temperature; and a temperature control unit which receives battery pack temperature signals sent by the temperature sensor to control startup and shutdown of a first cooling loop, a second cooling loop, a third cooling loop or a heating device. The immersion-liquid-type battery compartment temperature control system has excellent temperature control and temperature balancing capability.

An apparatus for jumping and charging a remote battery. The apparatus includes a charger, positive and negative charge connectors operable to be connected to the remote battery, an auxiliary battery having positive and negative terminals, and positive and negative jumper connectors separate from the positive and negative charge connectors. The positive and negative jumper connectors are connected to the positive and negative terminals of the auxiliary battery and are operable to be connected to the remote battery. The apparatus further includes a selector responsive to connecting the positive and negative charge connectors to the remote battery and operable to connect the charger to the auxiliary battery when the charge connectors are not connected to the remote battery and to connect the charger to the positive and negative charge connectors to charge the remote battery when the positive and negative charge connectors are connected to the remote battery.

A cord-shaped heater 10 has a plurality of conductive wires 5a that are covered with an insulating film 5b. The insulating film 5b includes a silicone resin. A quantity of the silicone resin included in the insulating film 5b is 40 to 80% by a weight ratio. The conductive wires 5a are wound around a core material 3 in a state of being paralleled together. An insulation body layer 7 is formed on an outer periphery of the conductive wires. A part or all of the insulation body layer 7 is formed of a heat-fusing material. A sheet-shaped heater 31 is wherein the cord-shaped heater 10 is arranged on a substrate 11.

The invention provides a circulating type oil-gas vacuum adsorption and recovery system comprising a crude-oil storage tank, comprising the crude-oil storage tank, a vacuum desulfurization device, an adsorption tank, a vacuum pump, an absorbent treating device and an absorption tower, wherein the absorbent treating device treats crude oil pumped from the crude-oil storage tank into lean gasoline;volatile oil gas of the crude-oil storage tank enters the vacuum desulfurization device and then enters the adsorption tank for adsorption and recovery after desorption and desulfurization; standard air is exhausted into atmosphere from the upper end of the adsorption tank, and nonstandard tail gas reenters the adsorption tank for circulating adsorption and recovery; the vacuum pump is used for carrying out vacuum desorption and regeneration on the adsorption tank with saturated adsorption; and desorbed high-concentration oil gas enters the absorption tower, and is absorbed by the lean gasoline body from the absorbent treating device, and the rich gasoline after absorption returns to the crude-oil storage tank. The circulating type oil-gas vacuum adsorption and recovery system is convenient and simple, volatile oil gas is absorbed and recovered by fully utilizing the self characteristic of the crude oil, additional equipment and resources do not need to be added, and the secondary pollution is not caused as well.

The invention relates to a method for switching the phase lines of a three-phase circuit and capable of preventing inter-phase short-circuit and a phase change switch device, which belong to the field of transformation and distribution devices. A phase line switch and a self-resetting single-phase switch are arranged in the shell body of the phase change switch; when load switching needs to be carried out, first the self-resetting single-phase switch is controlled to be off, and the external power supply of the phase change switch device is cut off; then the moving contact of an electric rotation switch is rotated and a 'one-from-three' rotation switch method is adopted, so that the phase sequence of the phase line input end of a single-phase power supply is switched to specified phase lines; and finally the self-resetting single-phase switch to be on, and the external power supply of the phase change switch device is recovered. Because the 'one-from-more' rotation switch method is adopted, the connection with a load end is cut off when in switching, the phenomenon that two phase lines are short-circuited when the phase change switch fails to work is thoroughly overcome, the whole switching process is safe and reliable, and the safety of power supply is improved. The invention can be widely applied to the field of low-voltage power supply and the operation of power grids.

The invention discloses s one kind of ITO board with film-plate, it not only includes base board and the first deposited ITO film on it, also includes alloy film and the secondary ITO film, the alloy film is on the primacy film, and the secondary ITO film is on the surface of alloy film. This invention also unfurls the preparation method of this kind of ITO board with film-plate. The beneficial effect of this invention is that if this ITO/alloy/ ITO layers is used, we can get low electric resistance using the electrical conductivity. Because the ITO film include two films when it deposit, it can avoid the growth of the crystal or pole fabric, and pledge to receive low degree of roughness.

The invention discloses an open circuit protective circuit for a secondary side output circuit of a current transformer, and belongs to the technical field of overvoltage protection circuits. The open circuit protective circuit for the secondary side output circuit of the current transformer comprises an automatic protective circuit and a manual protective mechanism, wherein the automatic protective circuit and the manual protective mechanism are connected with a secondary side output end of the current transformer in parallel and are used for open circuit protection of the secondary side output circuit. The automatic protective circuit comprises at least one basic circuit, and each basic circuit comprises a thyristor and a voltage stabilizer used for sensing voltages of the two ends of the secondary side output end of the current transformer and controlling the connecting and disconnecting of the thyristor. By the adoption of the open circuit protective circuit for the secondary side output circuit of the current transformer, the situation that high voltage is formed at the open circuit when primary side current of the current transformer is not equal to zero and the open circuit is formed at the output end is avoided, the accidents of arc striking at the open circuit, burning up of contacts, destroyed equipment and the like are further avoided, and production safety and equipment debugging and maintenance convenience are guaranteed. In addition, the manual protective mechanism is arranged, so that two output ends of the current transformer can be in reliable short splice through the manual protective mechanism in the process of equipment debugging and maintenance, and therefore operation safety is guaranteed.

The invention relates to the technical field of unmanned aerial vehicle wireless charging and particularly relates to a resonant coupling system for unmanned aerial vehicle dynamic wireless charging and a dynamic charging method. The system comprises an electric car and an unmanned aerial vehicle. The electric vehicle is provided with an electric car emission unit, and the unmanned aerial vehicle is provided with an unmanned aerial vehicle receiving unit. An electric car radio frequency identification reader is wirelessly connected with an RFID tag on the unmanned aerial vehicle, a transmission end communication coil and a reception end communication coil are wirelessly connected, and energy transmission is performed between a power transmission coil and a power reception coil. The power transmission coil adopts a combined coil matrix, and each coil in the combined coil matrix adopts a DD type structure. The power reception coil adopts a coil matrix. The resonant coupling system is easy to use, reliable in operation, low in maintenance cost, safe and efficient for dynamic and stable charging of the unmanned aerial vehicle, has strong adaptability to bad weather and environments, and has a high energy utilization rate.

The invention relates to an intelligent street lamp control system, which comprises a lighting device, a light intensity detecting and timing circuit, a single-chip for storing software programs, a reset circuit, a timing time display circuit and a controlled silicon circuit, wherein the light intensity detecting and timing circuit is connected with the single-chip, the timing time display circuit, the controlled silicon circuit and the lighting device in turn, and the reset circuit is connected with the single-chip. The intelligent street lamp control system has the advantages of simple structure design, low cost and energy conservation. The system can be widely used for controlling street lamp light, lighting systems, neon lamps and advertising lamps, can prolong the service life of bulbs and prevent a contact switch from generating sparks, and is suitable for use on inflammable and explosive special occasions.

The invention discloses a method for compound magnetic powder flaw detection, comprising the following steps: (1) pretreating; (2) magnetizing; (3) applying magnetic powder or magnetic suspension; (4) observing and recording a magnetic trace; (5) rating the flaw; (6) demagnetizing; and (7) post-treating. The magnetizing mode in the step (2) is circumferential closed magnet yoke magnetization and coil magnetization full sensing. The magnetic powder flaw detection method designed by the technical scheme of the invention has the advantage of high work efficiency, lightens the labor intensity of workers, avoids fire striking phenomenon, does not burn workpieces and has even magnetic field distribution.

The invention provides a method for improving a crystallizing rate of reused monocrystal silicon. Silicon material is fed into a crucible via a refeeding cylinder, when a liquid level of the silicon material in the crucible is a certain distance higher than a round corner of the bottom of the crucible, a few grams of barium carbonate are put into the crucible via the refeeding cylinder, and then the silicon material is continuously put into the crucible via the refeeding cylinder. In the method, silicon dioxide is exposed after the crucible is corroded, after barium carbonate powder is fed, barium oxide is generated after heating, the barium oxide reacts with silicon dioxide to generate BaSiO3; due to existence of barium metasilicate, a layer of compact and tiny cristobalite crystals is formed on the wall of the quartz crucible, and thus a corrosion degree of the quartz crucible corroded by solution is relieved; meanwhile, the cristobalite crystals are formed in needle holes, so that foreign gases entering silicon solution are reduced, and the purpose of directly improving the crystallizing rate of the monocrystal silicon after reusing is achieved.

The invention relates to cooling liquid for optical processing. The cooling liquid consists of the following ingredients in percentage by weight: 10 percent to 20 percent of surfactants, 5 percent to 20 percent of lubricants, 0.5 percent to 3 percent of anti-rusting agents, 3 percent to 8 percent of pH value conditioning agents, 0.05 percent to 0.5 percent of sterilizing agents, 0.05 to 0.5 percent of defoaming agents and the balance distilled water. The cooling liquid for optical processing has the advantages that glass chip separation performance and settleability are excellent, the environmental adaptation is wider, the stability is batter, the foaming is low, the rinsing is easy, the wettability is good, no damage is generated on the glass surface, no phosphorus element is contained, no peculiar smell, no poison or no corrosivity is generated, safety and reliability are realized, combustion and explosion are avoided, the environment is not polluted, the use cost is low, and the transportation and the storage are convenient.

The invention provides a method, a circuit and a device for controlling hot plug of a power supply, wherein the method comprises the flowing steps of: cutting off a current supply path between a power supply conversion module and a power supply bus when the power supply conversion module is contacted with the power supply bus of a work system through a connector; detecting a voltage value at the power supply conversion module side and a voltage value at the work system side; and switching on the current supply path between the power supply conversion module and the power supply bus according to the voltage value at the power supply conversion module side and the voltage value at the work system side. The method, the circuit and the device provided by the invention can effectively solve the problem of the sparking phenomenon generated at the moment of hot plug of the power supply, so that the reliability of the work system is improved.

The present invention provides a high-frequency heating apparatus which can heat the inside of the subject to be heated by high-frequency heating, and can apply scorch onto the surface of the subject to be heated. The high-frequency heating apparatus comprises a heating room for storing therein a subject to be heated, a heating unit that is provided at the upper portion of the heating room and performs heater heating, a high-frequency generating unit that is provided at the bottom of the heating room and generates a high-frequency wave to perform high-frequency heating, a high-frequency heating element having a high-frequency heat generating film on its rear surface, and a saucer for placing thereon the subject to be heated, in which a gap is provided between the high-frequency heating element and the saucer. Hereby, scorch can be applied onto a surface of the subject to be heated.

There is disclosed an FED (field emission display) capable of supplying an anode voltage, which is a high voltage, to an anode substrate with high reliability. A high voltage introduction button is sealed to a sealing plate, in which a contact spring is attached to the high voltage introduction button by spot welding. The high voltage introduction button has a flat portion connected to the contact spring, a sealing portion sealed to the glass substrate, and an external terminal to be connected to an external power source. The contact spring contacts an anode terminal of an anode substrate with an appropriate contact pressure, by a spring force from an arm portion of the contact spring. The anode terminal is formed of a conductive film containing metal particles.