51results about How to "Reduce shorting" patented technology

A portable electronic device includes a plurality of externally accessible electrical contacts, enabling electrical current or data to flow to or from the device when the device is “closed” or not being used. The invention is applicable to all types of portable devices, including laptop, notebook and palm-top computers, as well as telecommunications devices, video players and music players. Typically the externally accessible electrical contacts allow a battery in the device to be recharged. The preferred embodiment facilitates the recharging of a plurality of devices contained in lockers, carts, or other types of “docking stations.” The docking bay includes a corresponding set of electrical contacts configured to electrically engage with the contacts on the device. Such a docking bay may take the form of a charging stand, a cart with one or more slots or compartments, or a locker with a door and a storage compartment. A light may be provided on the device or the docking bay indicating that the electrical current is flowing from the bay to the device.

The invention discloses a preparation method of m-phenylenediamine. M-dinitrobenzene is subjected to continuous catalytic hydrogenation, settlement and membrane filtration, and m-phenylenediamine is obtained. The method is simple to operate and high in safety, can be used for continuous production, can achieve the effects of high production efficiency, high product quality, low labor intensity, environmental friendliness and high utilization rate of a catalyst, and is beneficial to the effect of industrialization.

The invention discloses an efficient and energy saving laminated thin-film solar cell and a manufacturing method, and belongs to the field of solar photovoltaic manufacture. Sensitive cell materials for absorbing blue, green and red light in solar spectra in a matched manner are selected, and the conversion efficiency of a three-junction thin-film cell is close to that of crystal silicon cells by 15%. The forbidden bandwidth of an intrinsic layer of a top amorphous silicon cell is 1.7-1.8eV, the forbidden bandwidth of cadmium telluride of a middle cell is 1.45eV, and the forbidden bandwidth of a copper indium gallium selenium absorbing layer of a bottom cell is about 1.05eV. Middle layers (7 and 11) are introduced to increase a light path, a light trap is formed, and light absorbing efficiency is improved by front and rear shielding wires (23 and 24). Serial short circuit inside a cell module is decreased, and cost and product reject ratio are reduced.

The invention relates to the field of well group associated gas recovery, in particular to a recovery device for cluster well group associated gas and a recovery method thereof. The recovery device comprises a first globe valve, a filter, a pressurizing system and a fifth globe valve, wherein the first globe valve, the filter, the pressurizing system and the fifth globe valve are sequentially connected between an associated gas input end and an associated gas output end through a pipeline; the pressurizing system consists of a pressurizing device and four non-return valves, the filter is connected with two gas inlets, namely an upper gas inlet and a lower gas inlet, of one side of the pressurizing device respectively through a first non-return valve and a second non-return valve, an upper gas outlet and a lower gas outlet of the other side of the pressurizing device are respectively connected to the fifth globe valve through a third non-return valve and a fourth non-return valve, the top end of a piston rod of the pressurizing device is hinged to a wiggle stick of an oil extractor, and a flowmeter is arranged between the pressurizing system and the fifth globe valve. A compressed associated-gas oil-gas mixture is transported to a pressurizing point or block station, and thus, well site associated gas is sufficiently recovered.

The present invention is directed to improved designs and methods for improving engine fuel efficiency by providing two-stage engine variable compression in running engines using connecting rod force reversals to rotate eccentric bushings to change the connecting rod length. Compression ratio changes are initiated by shifting a block-mounted cam such that it engages and flips a bi-stable toggle on the connecting rod. The clutch mechanism latches the eccentric at the eccentric rotation end point, whereupon the connecting rod acts as a rigid rod. The invention includes novel configurations of the lubricated journal bearing between the connecting rod and the eccentric that modify the squeeze film bearing effects and resulting friction. These configurations reduce the peak eccentric torque carried by the clutch mechanism while facilitating eccentric rotation at lower torque.

The invention discloses a recovery method for isobutene in the cracking process of methyl tert-butyl ether for preparation of isobutene. The method comprises the following steps: step 1) mixing light components obtained at the top of a light component-removing tower and containing dimethyl ether and isobutene with reacted materials and water; step 2) introducing a mixed material obtained in the step 1) into a first water scrubber to obtain a water phase at the bottom of the water scrubber and an oil phase at the top of the water scrubber; step 3) introducing the water phase obtained in the step 2) into a methanol recovery tower to recover methanol and to obtain a material flow containing dimethyl ether at the top of the recovery tower; step 4) introducing the oil phase obtained in the step 2) into a rectifying tower and allowing components at the top of the rectifying tower to enter into a second water scrubber so as to obtain a water phase at the bottom of the second water scrubber and an oil phase at the top of the second water scrubber; and step 5) introducing the oil phase obtained in the step 4) into the light component-removing tower so as to obtain pure isobutene at the bottom of the light component-removing tower and returning light components containing dimethyl ether and isobutene obtained at the top of the light component-removing tower to the step 1). The method provided by the invention has the advantages of simple process flow, easy operation, capacity of complete recovery of isobutene, reduction of production cost and substantial improvement of economic benefits of an apparatus.

An edge connector for a circuit board having a top layer and at least one layer underlying the top layer to form a composite structure. The edge connector comprises a first set of metallic tabs formed on the top layer in a row spaced from an edge of the top layer, with each of the first set of metallic tabs having a plating spoke associated therewith formed in the one layer underlying the top layer. A second set of metallic tabs is formed on the top layer in a row adjacent the edge. A metallic tab of the first set is positioned between a pair of metallic tabs in the second set, however, the surface area of the top layer between each pair of metallic tabs in the second set is substantially free of a plating spoke.

The invention relates to a technique method for using hydrogen obtained from rich oxygen in a natural gas steam reforming method to prepare cyclohexane with benzene hydrogenation, in particular to be used in the raw material hydrogen which is needed in the cyclohexane production technique. The rich oxygen produced in a rich oxygen device and the reforming gas obtained from a natural gas steam reforming method in a primary reformer are reacted in a secondary reformer; and then the steps of medium and low change, decarburization and methanation to prepare hydrogen with high hydrogen content which is used for producing cyclohexane, thereby reducing the hydrogenation exhaust emissions. The devices for realizing the treatment method comprises a rich oxygen production device, a rich oxygen condensing machine, rich oxygen content controlling system, natural gas steam primary reformer, a secondary reformer, a middle and low furnace, a decarbuation device, a methanation furnace and a benzene hydrogenation furnace. The invention has the advantages of replacing air with rich oxygen, reducing the content of nitrogen in the hydrogen production process and the tail gas discharging amount in the benzene hydrogenation process, increasing the hydrogen content in the hydrogen production process; the hydrogen is used in the benzene hydrogenation process, thereby achieving the purpose of energy saving, discharge reduction and environmental protection.

The invention discloses a preparation method of p-aminobenzene sulfonic acid. According to the method, p-nitrobenzene sulfonic acid is continuously catalyzed and hydrogenated and then subjected to sedimentation and membrane filtration to obtain the p-aminobenzene sulfonic acid. The method has the advantages of being simple to operate, high in safety and capable of being constantly produced, effects of high production efficiency, good product quality, low labor intensity, environmental friendliness, and high catalyst utilization rate can be achieved, and the method facilitates industrializationof the p-aminobenzene sulfonic acid.

The invention discloses a preparation method of o-aminobenzenesulfonic acid. The method comprises performing continuous catalytic hydrogenation on o-nitrobenzenesulphonic acid, sedimentation and membrane filtration to obtain the o-aminobenzenesulfonic acid. The preparation method of the o-aminobenzenesulfonic acid is simple in operation, high in safety and applicable to continuous production and can achieve the effects of high production efficiency, high product quality, low labor intensity, environmental friendliness, high catalyst utilization rate and industrialization applicability.

The invention discloses a preparation method of o-aminophenol. According to the preparation method, the o-aminophenol is obtained through carrying out continuous catalytic hydrogenation on o-nitrophenol and then through sedimentation and membrane filtration. The method is simple to operate and high in safety; the continuous production can be realized, and the effects of being high in production efficiency, high in product quality, low in labor intensity, friendly to an environment, further, high in utilization rate of a catalyst and beneficial to industrialization can be achieved.

The invention discloses a preparation method of 4-aminodiphenylamine. 4-nitrodiphenylamine is subjected to continuous catalytic hydrogenation, then settlement and membrane filtration to obtain 4-aminodiphenylamine. The method has the advantages of simple operation, high safety and continuous production, can achieve effects of high production efficiency, high product quality, low labor intensity, environmental friendliness and high utilization rate of catalyst, and is beneficial to industrialization.

The invention discloses a preparation method of 2,4-dimethoxyaniline. The preparation method comprises the following steps: performing continuous catalytic hydrogenation on 2,4-dimethoxynitrobenzene and then performing sedimentation and membrane filtration to obtain the 2,4-dimethoxyaniline. The preparation method disclosed by the invention is simple to operate, high in safety and capable of continuous production and can achieve the effects of high production efficiency, high product quality, low labor intensity, and high catalyst utilization rate, facilitates industrialization, and is environmentally friendly.

The invention discloses a preparation method of 2,4-diaminophenyl methyl ether. The preparation method comprises the steps of carrying out continuous catalytic hydrogenation on 2,4-dimitroanisole, andthen carrying out sedimentation and membrane filtration to obtain the 2,4-diaminophenyl methyl ether. The method is simple to operate and high in safety, can realize continuous production, is high inproduction efficiency, high in product quality, low in labor intensity, environmentally-friendly and high in catalyst utilization rate, and has an effect of being beneficial to industrialization.

The invention discloses a preparation method of p-aminophenol. The p-aminophenol is prepared by carrying out continuous catalytic hydrogenation on p-nitrophenol and then carrying out sediment and membrane filtration. The method has the advantages of simple operation, high safety and capability of realizing continuous production; the effects of high production efficiency, high quality of a product,low labor intensity, environment friendliness, high utilization rate of a catalyst, and facilitation for industrialization are achieved.

The invention relates to a method and a device capable of improving the capture rate of carbon dioxide in oilfield carbon dioxide flooding produced gas. The method comprises the following steps: pre-cooling feed gas; cooling CO2; flashing and separating the feed gas; carrying out low-temperature stripping; and recycling overhead gas. The device comprises a feed gas pre-cooler, a CO2 cooler, a flash tank, a stripping tower, a tower bottom reboiler, a tower top cooler, an overhead gas separator, an overhead gas compressor and a compression outlet cooler; the tower bottom reboiler is connected with the feed gas pre-cooler through a pipeline; the feed gas pre-cooler is connected with the CO2 cooler through a pipeline, the CO2 cooler is connected with the flash tank through a pipeline, the flash tank is connected with the stripping tower through a pipeline, the stripping tower is connected with the overhead gas separator through a pipeline, and the overhead gas separator is connected with the tower top cooler through a pipeline. Compared with an existing low-temperature rectification process, an overhead gas recovery process is developed, the cold energy is recycled, cyclic utilizationof CO2 is realized, emptying frequency is reduced and the CO2 recovery rate is increased.

The invention discloses a preparation method of m-aminophenol. According to the preparation method, m-nitrophenol is subjected to continuous catalytic hydrogenation, and then subjected to settling andfilm filtering, so as to obtain the m-aminophenol. The preparation method is easy to operate and high in safety, can realize continuous production, and can achieve effects of high production efficiency, high product quality, low labor intensity, environmentally friendliness, high catalyst utilization rate and favorability for industrialization.

The invention discloses a semiconductor testing equipment and a working method thereof. The semiconductor testing equipment comprises a bearing substrate, a testing probe, an air injection component and a movement device, wherein the bearing substrate comprises a first surface and a second surface, and the first surface and the second surface are opposite; the testing probe is provided with a testing end surface, and the testing end surface faces the second surface of the bearing substrate; the air injection component is fixedly connected to the testing end surface and comprises a jet nozzle,the jet nozzle is positioned between the bearing substrate and the testing probe, and the air injection component is used for providing airflow to the second surface of the bearing substrate; and themovement device drives the testing probe to move or drives the bearing substrate to move so as to enable the testing probe to be in contact with the second surface of the bearing substrate. The performance of the semiconductor testing equipment is improved.

The invention belongs to the technical field of aluminum smelting, particularly discloses an emergency shunt method and shunt device of an aluminum electrolysis cell, and aims to solve the problems of long power interruption time of series caused by the fact that the existing electrolysis cell cannot quickly and timely quit operation in case of accidents and the like. According to the method, the accident cell quits the operation state and/or a burnt bus of the accident cell is short-circuited. The device comprises an accident cell operation quit shunt structure and an accident cell burnt bus short-circuiting shunt structure, which both consist of shunt flexible couplings short-circuited between an accident cell current input side bus bar and a current output side bus bar and short-circuited between the bus bars at the two ends of the accident cell burnt bus and special clamps. The influence of accident cell on the entire series production is effectively reduced, the shunt effect is obvious, the operation is easy and convenient, the mounting is facilitated, the short-circuiting process is shortened, the repair time is saved, the conduction effect is good, and meanwhile the method and the device can be popularized and applied to different series of electrolysis shops.

The invention discloses a preparation method of P-aminoanisole. The p-aminoanisole is obtained through performing continuous catalytic hydrogenation on paranitroanisole and then sedimentation and membrane filtration. The preparation method disclosed by the invention can achieve the effects of high production efficiency, high product quality, low labor intensity, environmental friendliness, high catalyst utilization rate and beneficial industrialization.

The invention relates to the field of cable processing, and provides a method for welding a cable and a cable interface. The method comprises the following steps of: pre-assembling and fixing a plurality of core wires and a cable interface provided with a plurality of pins through a pre-assembling clamp, and then electrically connecting and fixing the core wires and the corresponding pins in a channel of the pre-assembling clamp in a hot soldering manner. According to the welding method, the butt joint accuracy of the pins and the core wires is greatly improved, the occurrence probability of short circuit between the core wires is reduced, and the labor intensity of operators can be relieved. The welding method is simple in operation step and short in consumed time, a foundation is provided for achieving automatic welding of the multiple pins and the corresponding core wires, and favorable conditions are created for improving the welding efficiency of the pins and the core wires. Besides, the pre-assembling clamp can effectively protect the welding parts of the pins and the core wires, so that the connection reliability of the pins and the core wires can be improved, and the service life of a welded piece product of the cable and the cable interface is prolonged.