36results about How to "Prevent electrical breakdown" patented technology

When ion beam 14 is irradiated onto a substrate 2 to conduct processing such as ion injection, plasma 30 emitted from a plasma generating device 20 is supplied to a portion close to the substrate 2 to suppress electric charging on a substrate surface caused by ion beam irradiation. A ratio of IE / IB is kept at a value not lower than 1.8, a ratio of II / IE is kept at a value not lower than 0.07 and not higher than 0.7, wherein IB is an electric current of the ion beam 14 irradiated onto the substrate 2, II is an ion current expressing a quantity of ions in the plasma 30 emitted from the plasma generating device 20, and IE is an electron current expressing a quantity of electrons in the plasma 30.

The invention discloses an oil-gas-water three-phase electrostatic coalescence separator, which comprises a separator main body, a gas-liquid separation module, a high-water coalescence module, a low-water coalescence module, a power supply and a control system; a gas-liquid separation module, a high water The coalescing module, low water content coalescing module, power supply and control system are located inside the main body of the separator; the gas-liquid separation module is vertically inserted into the left side of the horizontal cylinder, and the high water content coalescence module is located on the right side of the gas separation module; the low water content coalescence The junction module is located on the right side of the high water content coalescing module, and the power supply and control system is located on the right side of the weir plate. The oil, gas and water three-phase electrostatic coalescence separator of the present invention realizes the four-stage separation design of oil, gas and water through the gas-liquid separation module, the high water content coalescence module, the low water content coalescence module and the gravity sedimentation module in the horizontal cylinder body, which greatly simplifies the design on the one hand Separation technology realizes intensive separation; on the other hand, it can handle oil-water emulsions with a wide range of water content and significantly improve the separation effect.

The invention discloses a compound cooling method for a high-power power semiconductor device, pertaining to the field of semiconductor devices. A heat pipe with groups of radiating ribs / wing panels is arranged on a radiating module, a low-temperature cooling gas is forcedly / directly transmitted to various groups of radiating ribs / wing panels, and the cooling gas is utilized to constitute electrical insulating layers between air supply air distribution ducts and various groups of radiating ribs / wing panels. The invention further provides a compound cooling device which utilizes the method andis provided with a combined air-conditioning box body, an air processing device and an air suction / exhaust pipeline, an air inlet and an air outlet are arranged on the air-conditioning box body, the air processing device is connected with the air suction / exhaust pipeline, the air outlet end thereof is connected with the air inlet of the air-conditioning box body, the air outlet of the air-conditioning box body is connected with the air suction / exhaust pipeline, an air supply main pipe is arranged at the air inlet in the air-conditioning box body, and the separate air supply air distribution ducts are respectively correspondingly arranged between the air supply main pipe and the various groups of radiating ribs / wing panels. The compound cooling method overcomes the shortcomings of the traditional cooling modes, and the system structure is simpler.

The equipment has a vacuum circuit breaker (3) and a vacuum bulb (5) occupying open and closed positions of the equipment. The breaker has a contact (6) and another contact initially opened to create arc and an arc voltage to allow the current to be derived in the breaker / bulb. The opening of the contacts continues until an insulation distance between the contacts is obtained and before opening of contacts (8, 9) of the bulb so as to avoid dielectric flashover on the bulb during establishment of re-establishment transitory voltage after closing the contacts.

The invention belongs to the technical field of railway turnout switching equipment installation and provides turnout installation device long-term pressure-resistant insulating angle iron. The turnout installation device long-term pressure-resistant insulating angle iron comprises a fixed iron core and a connecting iron core, wherein the fixed iron core is of a linear structure; the connecting iron core is arranged at one end of the fixed iron core and is in an obtuse angle broken line shape; a connecting hole is formed in the connecting iron core; fixing holes are formed in the two ends of the fixed iron core; cured layers are arranged on the fixed iron core and the inner walls of the two fixing holes in a mold pressing mode; and the outer sides of the cured layers are coated with plasticizing layers in an injection molding mode. According to the turnout installation device long-term pressure-resistant insulating angle iron, the affinity among the iron cores, the cured layers and the plasticizing layers can be greatly improved through the layer structure; water ingress and gas production between the two adjacent layers are avoided; electric breakdown is prevented; electrochemical reaction is eliminated; and the service life is greatly prolonged.

The present application provides an IGBT chip sub-unit packaging structure and a manufacturing method thereof. The packaging structure includes an IGBT chip, a gate arranged on the IGBT chip, and an electrode connected to the upper surface emitter and the lower surface collector of the IGBT chip respectively. The connected upper molybdenum sheet and lower molybdenum sheet and the encapsulator, wherein the emitter on the upper surface is coated with silicon rubber along the terminal area of ​​the IGBT chip. Through the packaging structure of the present application and its manufacturing method, the terminal structure of the IGBT chip can be protected by passivation, which avoids electrical breakdown caused by contamination of the chip terminal by external factors, and improves the voltage resistance of the chip and the reliability of long-term work. sex.

A segmented electromagnetic coupling separator for treating oilfield produced fluid, including a separator tank, a gas-liquid separation module, a high water content electromagnetic synergy dehydration module, a low water content electric dehydration module, a power supply system, a liquid level controller, a gas Outlet, skimmer and water outlet. The separator tank is placed horizontally, and the gas-liquid separation module, high-water electromagnetic synergy dehydration module, low-water electric dehydration module and liquid level controller are placed inside the separator body in sequence. The gas-liquid separation module is composed of an inlet rectifier tube and a baffle, the high-water electromagnetic synergy dehydration module is composed of magnets and electrodes, and the low-water electric dehydration module is composed of several vertical electrode plates placed in parallel. The present invention realizes the four-stage separation design of oil, gas and water through the above three modules and the gravity settling module in the horizontal cylinder, and has the advantages of compact structure, high separation efficiency and thorough separation. In addition, it can also handle oil-water emulsions with a wide range of water content, greatly improving the dehydration rate of crude oil.

The invention relates to a horn antenna which comprises a feed source and a horn and is characterized in that multiple metamaterial media layers are filled in the horn, each metamaterial media layer has the same dielectric constant, the multiple metamaterial media layers have different dielectric constants, and each metamaterial media layer is composed of a plurality of metamaterial units. The horn antenna is simple in structure, low in manufacture price, high in gains, good in directionality, strong in pressure resistance, free of electric breakdown, small in structure, light in weight and flexible.

The invention relates to a rubber-impregnated insulating glove and a manufacturing method thereof. The impregnating liquid includes the following raw ingredients proportioned by parts: natural rubber, zinc oxide, sulfur, accelerator, anti-aging agent, stearic acid and light calcium carbonate , the manufacturing method is to melt the masticated rubber and the above-mentioned raw ingredients into a liquid after conventional mixing; use a glove model to dip the above-mentioned liquid several times at a certain speed through the dipping equipment, and then dry it after dipping; Vulcanization treatment at the designed temperature, pressure and time: final voltage test, inspection, packaging. The advantages are: beautiful, good cold resistance, good water repellency, good insulation, safe and reliable, and meet the requirements of the IEC60903 standard.

The invention relates to a horn antenna which comprises a feed source and a horn and is characterized in that multiple metamaterial media layers are filled in the horn, each metamaterial media layer has the same dielectric constant, the multiple metamaterial media layers have different dielectric constants, and each metamaterial media layer is composed of a plurality of metamaterial units. The horn antenna is simple in structure, low in manufacture price, high in gains, good in directionality, strong in pressure resistance, free of electric breakdown, small in structure, light in weight and flexible.