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53results about How to "Avoid tip discharge phenomenon" patented technology

Multifunctional electromagnetic pulse experiment instrument

The invention provides a multifunctional electromagnetic pulse experiment instrument which comprises a wide-range adjustable DC power supply composed of two regulated power supplies; the experiment instrument also comprises a multi-frequency direct-reading and ultra-low frequency adjustable pulse frequency controller, a high voltage generator demodulated by the pulse frequency controller, a high voltage ammeter, a movable experimental component and a pulse switch signal output socket; an experiment platform with a high-voltage discharge prevention shell is constructed on the top part of the experiment instrument; the movable experiment component and an adjustable electromagnet are mounted on the platform. The multifunctional electromagnetic pulse experiment instrument not only can output the stable high-voltage direct current, but also can output the pulse high-voltage electricity with adjustable frequency and pulse width, and output the pulse magnetic field or provide independent pulse switch signals for various electromagnets. The multifunctional electromagnetic pulse experiment instrument can be adopted for conducting a plurality of high-voltage static experiments and the experiments in biological, physical and medical fields efficiently and conveniently. The invention provides an electromagnetic pulse experiment instrument which has the advantages of complete functions, convenient application, low cost and practicality for the college teaching and research.
Owner:DEZHOU UNIV

Tantalum ring and preparation method thereof, sputtering device comprising tantalum ring and application thereof

The invention provides a tantalum ring and a preparation method thereof, a sputtering device comprising the tantalum ring and an application thereof. The tantalum ring comprises a ring part and patterns arranged on the surface of the ring part, and the patterns are in a conical pit shape, the conical pit-shaped patterns have a large specific surface area, when the conical pit-shaped patterns are applied to a sputtering process, a large amount of sputtering source can be attached on the conical pit-shaped patterns, and a better adhesion force is provided; in addition, the patterns present a conical pit shape, the tops of the conical pits face the interior of the ring part, the bottoms of every two adjacent conical pits are connected, a plane-shaped structure is presented but not a structurewith a pointed end, therefore, the phenomenon of point discharge occurring in a power-on process can be avoided, so that the service life of the tantalum ring is prolonged. The preparation method ofthe tantalum ring is simple, only the knurling treatment is needed, surface sharpening treatment is not needed, and it is ensured that on the premise that the obtained tantalum ring has better adsorption power and adsorption capacity on the sputtering source, and the situation of the point discharge is avoided as well.
Owner:KONFOONG MATERIALS INTERNATIONAL CO LTD

Aluminum clad steel pre-stranded wire and preparation method thereof

The invention relates to an aluminum clad steel pre-stranded wire for fixing a damper or a spacing bar in power transmission and distribution circuits of the power industry and a preparation method thereof. The aluminum clad steel pre-stranded wire consists of an inner core steel wire, an aluminum clad layer and end face treatment layers, wherein the aluminum clad layer is clad on the periphery of the inner core steel wire, and the end face treatment layers are clad at two ends of the inner core steel wire and the aluminum clad layer or the end of the inner core steel wire. Because the end face of the pre-stranded wire is designed into a duckbilled shape, the pre-stranded wire is bound with a power transmission cable more firmly; because the end faces are provided with the treatment layers, the rust corrosion of the end faces is avoided; because the oxide layer on the end face of the inner core steel wire is cleared by adopting the methods of quick burnishing, polishing and the like, corrosion of acid washing on the aluminum clad layer is avoided, and pollution of acid to the environment is reduced; and a flexible blanket is placed in a container, and a plating aid is coated on the inclined plane of the inner core steel wire by adopting a rubbing method, so corrosion of the aluminum clad layer is reduced.
Owner:JIANGSU TIANNAN ELECTRIC POWER EQUIP

Fixing method of 600MW steam-turbine generator stator coil end

The invention relates to a fixing method of a 600MW steam-turbine generator stator coil end. According to the method, technological innovation is performed on fixing of the stator coil end, a traditional method of rope binding is broken through, the fixing structure of a large-size overall glass fiber reinforced plastics conical ring, adjustable binding rings and a nose radial bracing ring is adopted, and meanwhile a rigid-flexible fixing structure which is formed at the whole stator coil end and firmly fixed in the radial direction and the tangential direction and is retractable in the axial direction through connection between a non-magnetic spring plate and a stator core end. When a generator operates or breaks down suddenly, a coil bar expands or contracts in the axial direction due to temperature changes, the stator coil end can expand and contract in the axial direction overall, so that thermal stress in coil insulation is effectively slowed down, and the generator is adapted to peak load operation conditions. In the stator coil end fixing structure, all fasteners making contact with a coil are made of non-metallic materials, so that the phenomena of local overheating and point discharge caused by the adoption of metallic materials are avoided.
Owner:HARBIN ELECTRIC MASCH CO LTD

Damper for 1000kV extra-high voltage alternative-current transmission line

The invention relates to a damper for 1000kV extra-high voltage alternative-current transmission lines in power sector, which comprises a cable clamp, two damper bodies, a steel strand and at least one preformed armor rod. The cable clamp and the steel strand are fixedly connected; the two damper bodies are respectively fixed on the two ends of the steel strand; the preformed armor rod fixes the cable clamp on a power transmission line; the cable clamp is in a sea horse shaped structure; the damper bodies are in a kirsite cucurbit shaped structure; and the connection position of the steel strand and the damper bodies is arranged on the sides of the fixing end damper heads of the damper bodies. Since the cable clamp is provided with a separation nail, the damper can be effectively connected with a power transmission cable; and hangers of the cable clamp, as well as corners of the cable clamp, which are used for fixing conduits, are designed in to an arc shape, thereby avoiding marginaldischarge; since the damper bodies made of kirsite are cast into a cucurbit shape, the specific gravity of the damper bodies is improved and the volume of the damper bodies is reduced; and since the connection between the windward side of the damper head at a cantilever end and the damper heads is designed into an arc shape and the size of the arc is controlled in a certain range, the marginal discharge can be avoided.
Owner:JIANGSU TIANNAN ELECTRIC POWER EQUIP

High-voltage vacuum extinction chamber

The invention provides a high-voltage vacuum extinction chamber, belonging to the technical field of high voltage electrical apparatus insulation, and aiming at realizing the purposes of increasing a transient turn-off current and extinguishing arc quickly. The high-voltage vacuum extinction chamber comprises a glass shade, and a static end cover board and a movable end cover board which are respectively fixed at two ends of the glass shade, wherein a static conducting rod fixed on the static end cover board and a movable conducting rod connected to the movable end cover board in a sliding manner are arranged in the glass shade; the inner end of the static conducting rod is provided with a static contact, the inner end of the movable conducting rod is provided with a movable contact as big as the static contact; a first static shade barrel covering the static contact and the static conducting rod inside, and a first movable shade barrel which is arranged by being symmetric to the first static shade barrel and covers the movable conducting rod inside, are arranged in the glass shade; the inner side faces of the opposite ends of the first static shade barrel and the first movable shade barrel are provided with spiral turned edges, and when the movable contact is disconnected with the static contact, the movable contact can move into the first movable shade barrel. The high-voltage vacuum extinction chamber can realize quick arc extinguishing and improve the instantaneous current interruption capability of the vacuum extinction chamber.
Owner:ZHEJIANG ZIGUANG ELECTRIC APPLIANCE

A high-voltage vacuum interrupter

The invention provides a high-voltage vacuum extinction chamber, belonging to the technical field of high voltage electrical apparatus insulation, and aiming at realizing the purposes of increasing a transient turn-off current and extinguishing arc quickly. The high-voltage vacuum extinction chamber comprises a glass shade, and a static end cover board and a movable end cover board which are respectively fixed at two ends of the glass shade, wherein a static conducting rod fixed on the static end cover board and a movable conducting rod connected to the movable end cover board in a sliding manner are arranged in the glass shade; the inner end of the static conducting rod is provided with a static contact, the inner end of the movable conducting rod is provided with a movable contact as big as the static contact; a first static shade barrel covering the static contact and the static conducting rod inside, and a first movable shade barrel which is arranged by being symmetric to the first static shade barrel and covers the movable conducting rod inside, are arranged in the glass shade; the inner side faces of the opposite ends of the first static shade barrel and the first movable shade barrel are provided with spiral turned edges, and when the movable contact is disconnected with the static contact, the movable contact can move into the first movable shade barrel. The high-voltage vacuum extinction chamber can realize quick arc extinguishing and improve the instantaneous current interruption capability of the vacuum extinction chamber.
Owner:ZHEJIANG ZIGUANG ELECTRIC APPLIANCE

Noise reduction electrode of electrostatic precipitator

The invention discloses a noise reduction electrode of an electrostatic precipitator. The noise reduction electrode of the electrostatic precipitator comprises a repelling electrode, a collecting electrode and a generating electrode; a collecting electric field is formed between the generating electrode and the collecting electrode, while a repelling electric field is formed between the repelling electrode and the collecting electrode; the collecting electrode is a conductive polar plate, and the repelling electrode is a repelling electrode plate clad with an insulator outer layer or a semiconductor outer layer. According to the noise reduction electrode of the electrostatic precipitator, the insulator outer layer or the semiconductor outer layer is additionally arranged on the repelling electrode, such that the repelling electric field is weakened without a severe discharge phenomenon, and therefore, the working noise of the electrostatic precipitator is reduced and the use experience of a customer is enhanced; the collecting polar plate is still a metal polar plate to ensure the same collecting electric field and to guarantee no declining in dust precipitation effect, and the metal polar plate is convenient to manufacture and low in cost; the repelling electrode plate of the repelling electrode is provided with a heat-shrinkable bushing; the heat-shrinkable bushing enables the repelling electrode to produce an insulation effect, and is low in cost and convenient and fast to manufacture without affecting the structural strength of the repelling electrode.
Owner:SUZHOU BEIANG TECH LTD

Adjustable strain clamp

The invention relates to an adjustable strain clamp which is composed of a clamp body, a steel anchor, a flow guide clamping plate and a flow guide clamp. Due to the fact that the flow guide clampingplate is installed on an aluminum pipe in a sleeving mode, can rotate around the aluminum pipe and are fixed after the declination angle of the aluminum pipe and the flow guide clamping plate is adjusted according to the design requirement, a dedicated angle positioning tool does not need to be adopted when the aluminum pipe is connected with a wire in a pressed mode; due to the fact that waist-shaped arc holes are formed in a connecting disc of the flow guide clamp, the angle that the flow guide clamp is relative to the flow guide clamping plate can be adjusted; due to the fact that the flowguide clamp is clamped by two flow guide clamp connection clamping plates when the flow guide clamping plate is connected with the flow guide clamp, the contact resistance is effectively reduced, andheat of the flow guide clamping plate is reduced; and due to the fact that a structure form of a shaft shoulder is arranged between a pull ring and an anchor rod of the steel anchor, the steel anchorcan be conveniently positioned in the aluminum pipe, and the phenomenon that rainwater enters the aluminum pipe from the end of the aluminum pipe is effectively prevented.
Owner:JIANGSU TIANNAN ELECTRIC POWER EQUIP

Contact pedestal and GIS using contact pedestal

The invention relates to a contact pedestal and a GIS using the contact pedestal. A circular arc sealing cover for sealing a hand hole is detachably and fixedly assembled at the hand hole; the outer peripheral surface of the circular arc sealing cover is fit with the outer cylinder wall surface of a fixing part; after an operator completes mounting and fixing of the contact pedestal in an operation cavity through the hand hole opened in the cylinder wall of the fixing part of the contact pedestal, the circular arc sealing cover is adopted to seal the hand hole, and thus, after sealing, the outer peripheral surface of the circular arc sealing cover is fit with the outer peripheral surface of the fixing part, the circular arc sealing cover fills the hand hole in the outer peripheral surfaceof the fixing part, the outer peripheral surface of the whole fixing part of the contact pedestal forms a complete circular arc surface, and thus, the problem of over high field intensity to result inbreakdown at the place due to uneven electric field distribution at the hand hole can be effectively avoided.
Owner:HENAN PINGGAO ELECTRIC +2

Aluminum-coated carbon fiber conductor strain clamp

The invention relates to an aluminum-coated carbon fiber conductor strain clamp, which is composed of a clamp body, a steel anchor, a compression pipe, a drainage plate and a drainage clamp, wherein the ratio of lengths of insertion to the compression pipe by an anchor rod and an aluminum-coated carbon fiber core is 1 to 2; as two end surfaces of the clamp body adopt a circular arc surface structure form, happening of a point discharge phenomenon is thus avoided; as the compression outer surface between the clamp body and the aluminum-coated carbon fiber conductor adopts a taper structure, stress concentration after compression is thus avoided; as the anchor rod of the steel anchor is uniformly provided with annular circular arc grooves, the compression pipe and the anchor rod and the anchor rod and the clamp body after compression can be closely fit, and the tension resistance is improved; as the drainage plate adopts a ring buckle and splint combination mode and the drainage plate and the drainage clamp are in double-sided contact, the conductive performance is better; and the compression part between the compression pipe and the aluminum-coated carbon fiber core adopts the taperstructure, stress concentration after compression to cause damages to the carbon fiber core can be avoided.
Owner:JIANGSU TIANNAN ELECTRIC POWER EQUIP

12kV current-carrying 1250A solid insulation switchgear

The invention discloses a 12kV current-carrying 1250A solid insulation switchgear. The switchgear comprises a casing, the central portion of the casing is provided with an insulation square barrel, and the insulation square barrel is internally provided with a vacuum switch, an isolation switch and a grounding switch. The insulation square barrel is externally provided with a metal shielding grounding layer, and a spring energy storage operating mechanism and a locking mechanism are arranged at one side of the insulation square barrel and are respectively in driving connection with the vacuum switch, the isolation switch and the grounding switch. According to the invention, by use of a through cluster bus structure, no matter wiring is performed at the front end or the rear end of a wire inlet and outlet system, a sufficient conductive cross section can be guaranteed, by use of a watchband contact finger technology, contacts are uniformly distributed, the conductor length is reduced, the overall loop resistance is reduced, the problem of non-uniform conduction in heavy-current electric contact is avoided, and pressing looseness caused by temperature distortion of a conductor and heating malicious deformation further caused therefrom are solved. The rated current grade of a 12kV solid insulation switchgear can reach 1250A.
Owner:GUANGDONG PURLUX ELECTRIC

Microwave disinfection and sterilization device for negotiable securities

ActiveCN111467531AAvoid tip dischargePrevent carbonization and burningLavatory sanitoryRadiationEngineeringMicrowave
The invention discloses a microwave disinfection and sterilization device for negotiable securities. The microwave disinfection and sterilization device comprises a microwave working cavity and at least one microwave generator, wherein the microwave working cavity comprises one or a plurality of negotiable securities containing areas; two sides of each negotiable securities containing area are independently provided with a first baffle plate and a second baffle plate; the first baffle plate and the second baffle plate are opposite; in addition, the first baffle plate and the second baffle plate are set to be in parallel with a bearing surface of each negotiable securities containing area; the first baffle plate and the second baffle plate are independently made of microwave non-penetratingmaterials; and an interval between the first baffle plate and the second baffle plate is not greater than the half wavelength of the microwave. Two sides of each negotiable securities containing areaare independently provided with the baffle plate made of the microwave non-penetrating materials, the interval between two layers of baffle plates and the wavelength of the microwave meet a certain proportional relation, a non-mixed-mode electromagnetic wave can be realized, and the negotiable securities can prevent from being carbonized and burnt down.
Owner:ZHONG CHAO GREAT WALL FINANCIAL EQUIP HLDGCO

Multifunctional electromagnetic pulse experiment instrument

The invention provides a multifunctional electromagnetic pulse experiment instrument which comprises a wide-range adjustable DC power supply composed of two regulated power supplies; the experiment instrument also comprises a multi-frequency direct-reading and ultra-low frequency adjustable pulse frequency controller, a high voltage generator demodulated by the pulse frequency controller, a high voltage ammeter, a movable experimental component and a pulse switch signal output socket; an experiment platform with a high-voltage discharge prevention shell is constructed on the top part of the experiment instrument; the movable experiment component and an adjustable electromagnet are mounted on the platform. The multifunctional electromagnetic pulse experiment instrument not only can output the stable high-voltage direct current, but also can output the pulse high-voltage electricity with adjustable frequency and pulse width, and output the pulse magnetic field or provide independent pulse switch signals for various electromagnets. The multifunctional electromagnetic pulse experiment instrument can be adopted for conducting a plurality of high-voltage static experiments and the experiments in biological, physical and medical fields efficiently and conveniently. The invention provides an electromagnetic pulse experiment instrument which has the advantages of complete functions, convenient application, low cost and practicality for the college teaching and research.
Owner:DEZHOU UNIV

Preparation method of aluminum clad steel pre-stranded wire

The invention relates to an aluminum clad steel pre-stranded wire for fixing a damper or a spacing bar in power transmission and distribution circuits of the power industry and a preparation method thereof. The aluminum clad steel pre-stranded wire consists of an inner core steel wire, an aluminum clad layer and end face treatment layers, wherein the aluminum clad layer is clad on the periphery of the inner core steel wire, and the end face treatment layers are clad at two ends of the inner core steel wire and the aluminum clad layer or the end of the inner core steel wire. Because the end face of the pre-stranded wire is designed into a duckbilled shape, the pre-stranded wire is bound with a power transmission cable more firmly; because the end faces are provided with the treatment layers, the rust corrosion of the end faces is avoided; because the oxide layer on the end face of the inner core steel wire is cleared by adopting the methods of quick burnishing, polishing and the like, corrosion of acid washing on the aluminum clad layer is avoided, and pollution of acid to the environment is reduced; and a flexible blanket is placed in a container, and a plating aid is coated on the inclined plane of the inner core steel wire by adopting a rubbing method, so corrosion of the aluminum clad layer is reduced.
Owner:JIANGSU TIANNAN ELECTRIC POWER EQUIP
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