143results about How to "Increase insulation distance" patented technology

The invention relates to a spiral-wound composite insulator bar for high-voltage transmission line in electric network and method for making same. The spiral-wound composite insulator bar has metal rings inlayed in its two ends. On the external diameter of metal rings wounded filaments, which are bound with, resinate glass fiber. The method comprises the steps of: getting some compound; melting resin; mixing melted glass fiber with resin solution and stirring with 150 turns per minute; enwinding continuously and modeling the glass fiber and epoxy resin radical solution in high temperature. The invention has the advantage of simple structure and low cost, of reducing tower's load and the effective distance from current transmission line to the earth. The spiral-wound composite insulator bar with cross wrap can meet the requirement of tensile strength, increasing bending strength.

An electromagnetic relay including a base having a first receptacle, a second receptacle and a partition wall defining the first and second receptacles on mutually opposite sides of the partition wall. The partition wall includes a major part and an auxiliary part, the major part being provided with a local opening. An electromagnet assembly is received in the first receptacle of the base and includes an electromagnet and an armature. The armature includes an extending portion extending in a direction toward the second receptacle of the base through the local opening of the partition wall. The auxiliary part of the partition wall is disposed between the electromagnet and the extending portion of the armature. A contact section is received in the second receptacle of the base. An actuating member is arranged between the electromagnet assembly and the contact section, and includes an envelope part for enclosing at least a part of the extending portion of the armature. When the contact section is opened, the envelope part of the actuating member is supported by the auxiliary part of the partition wall.

The invention discloses a small-capacity epoxy resin poured dry type transformer, belonging to the technical field of dry type transformers. The small-capacity epoxy resin poured dry type transformer comprises an iron core, a low-voltage coil, a high-voltage coil, an upper clamp piece, a lower clamp piece, an upper cushion block, a lower cushion block and a pull screw rod, wherein a ventilation air duct is arranged between the low-voltage coil and the high-voltage coil, the upper and lower cushion blocks are arranged on the upper and lower ends of the ventilation air duct, the upper cushion block is provided with the upper clamp piece, the lower cushion block is provided with the lower clamp piece, the pull screw rod is connected between the upper clamp piece and the lower clamp piece, a lead-out wire of the low-voltage coil is connected onto a low-voltage lead insulator, a starting lead of the high-voltage coil is connected to a start terminal, a tapping lead of the high-voltage coil is connected to a tapping terminal, and a tail lead of the high-voltage coil is connected onto a tail terminal. The small-capacity epoxy resin poured dry type transformer has the characteristics that a plurality of tapping joints of the tapping terminal are arranged in a equilateral polygon shape, and resin partitions are respectively arranged between the tapping terminal and the starting terminal and between the tapping terminal and the tail terminal. The small-capacity epoxy resin poured dry type transformer has the advantages of improving the safety use performance, prolonging the insulation distance among all tapping points, and improving the electric insulation strength, and is small in size and compact and reasonable in structure.

The invention discloses a spherical electrode spark gap switch with an adjustable gap. A switch housing is cylindrical; a switch housing side baffle is combined with the switch housing through a bonding method; an anode support is fixed together with the switch housing side baffle through a screw and combined with a stud of an anode through a thread on a central through hole of the anode support; a conductor is fixed on an anode terminal through two nuts; one end of the anode in a switch cylinder body is a discharging spherical part; the other end of the anode is the stud; and the stud also has an effect of wiring the anode while having an effect of supporting the anode. A cathode and a cathode support are integrated; a trigger electrode is placed or not placed at the central part of the cathode; if the trigger electrode is placed at the central part of the cathode, the trigger electrode is placed in the cathode after being protected by a trigger electrode sheath; and a lead of the trigger electrode is led in through a trigger electrode terminal and a knurled thumb flat-head screw. According to the invention, the length of a discharging gas gap is adjustable, the length of the discharging gas gap can be flexibly changed according to requirements on switch discharging voltage, and the working range of the switch is wider.

The invention discloses an insulation adhesive material for a compound photovoltaic backsheet and application. The insulation adhesive material is composed of a component A and a component B. The component A contains matrix resin, assistant resin and an assistant, wherein the matrix resin is hydroxyl polyester resin, which has a hydroxyl value of 5-30mgKOH / g, an acid value of 0.2-5mgKOH / g, a number-average molecular weight of 5000-50000, a glass transition temperature ranging from -40DEG C to 30DEG C, and is prepared by esterification polycondensation reaction of small molecular polyprotic acid and polyol under inert gas protection. The component B is a crosslinked component. During use, the component A and the component B are mixed in different proportions according to requirements. The insulation adhesive material provided by the invention not only has long-term and stable bonding performance, but also has excellent performance in heat resistance, insulation and weatherability, and can be used for preparation of high weather resistant compound photovoltaic backsheets. Also, the raw materials are easily available, the process is controllable, and the operation is simple.

The invention relates to an unloading off-circuit tapping switch used in a transformer, comprising an upper pedestal, a lower pedestal and a rotary shaft which penetrates through the upper and lower pedestals, the rotary shaft is provided with a support piece and a moving contact assembly, an insulator is linked between the upper pedestal and the lower pedestal, a fixed contact configured corresponding to the moving contact assembly is mounted at the inner side of the insulator, the difference lies in the fact that an outer insulating cylinder is mounted on the periphery of the insulator, theouter insulating cylinder is provided with spaced connecting terminals, an inner end of the connecting terminal is linked with a leading-out terminal on the insulator via a linkage conductor, the leading-out terminal is connected with the fixed contact, and two adjacent connecting terminals are distributed in an axially and vertically staggered manner. The invention dramatically ameliorates electric field distribution of the switch at the same time of unloading, and the adjacent connecting terminals are distributed on the outer insulating cylinder in an axially and vertically staggered manner,thus further improving insulating level of the adjacent terminals; the invention is simple and compact in structure as well convenient for manufacturing and installation, The invention is suitable for tapping switches of high voltage and large current in particular.

The invention provides an array substrate and a short-circuit repair method thereof and a display device. The array substrate comprises a first conducting wire and a second conducting wire which are mutually and spatially crossed and insulated, and further comprises a spare repair wire; the spare repair wire is arranged on the crossed portion between the first conducting wire and the second conducting wire, the first conducting wire and the second conducting wire are located on different layers, and the spare repair wire can conduct cutting and repairing on the first conducting wire or the second conducting wire close to the spare repair wire when the first conducting wire and the second conducting wire are in short circuit on the crossed portion. Compared with the situation that in the prior art, the spare repair wire is cut off in short-circuit and signal wires to be repaired are arranged on a same layer, the insulation distance between the spare repair wire and the uncut conducting wire is increased, accordingly the possibility of short-circuit between the spare repair wire and the uncut conducting wire is reduced, and thus reliable repairing of the cut conducting wire in short-circuit is achieved.

The invention discloses a field emission electron source, which comprises an insulation substrate. A cathode emission electrode is arranged on the insulation substrate and comprises a cathode electrode and a cathode emitter arranged on the cathode electrode; an isolated body is arranged on the insulation substrate; and a metal grid mesh is arranged on the isolated body and further extends above the cathode emission electrode, wherein the isolated body and the cathode electrode are arranged at intervals. A method for preparing the field emission electron source comprises the following steps: providing an insulation substrate; preparing a cathode emission electrode on the insulation substrate, wherein the cathode emission electrode comprises a cathode electrode and a cathode emitter arranged on the cathode electrode; preparing a prefabricated body of the isolated body on the insulation substrate and exposing the prefabricated body of the isolated body; manufacturing a metal grid mesh on the prefabricated body of the isolated body; removing the exposed part of the prefabricated body of the isolated body and arranging the isolated body and the cathode electrode at intervals; therefore, the field emission electron source is obtained.

This invention relates to compound insulator field control method, wherein, the insulator comprises chip bar, metal wares on both sides and umbrella protection cover; the method is characterized by the following: adopting silicon rubber materials with high dielectric parameters with less than 5 percent of umbrella protection with other protection part adopting regular rubber for casting into shape. This invention uses the materials to process compound insulator cover to improve voltage bearing ability and to ease maximum field of insulator end.

The invention discloses a wire coil for an electromagnetic rice cooker and a coiling method. The wire coil for the electromagnetic rice cooker comprises a support, a magnetic stripe and a stranded wire. The coiling method includes the following steps of firstly, dividing the stranded wire into two parts; secondly, separately coiling one part of the stranded wire on the outer surface of the support; thirdly, coiling the other part of the stranded wire on the bottom surface of the support; and fourthly, mounting the magnetic stripe on the support. During use, different parts of the stranded wire are coiled separately and gaps are reserved among turns of the stranded wire. Therefore, the wire coil compared with the prior art has the advantages that insulation distance between each two adjacent turns is increased, probability of short circuit among the turns in case of transient overvoltage and overcurrent is reduced, probability of direct short circuit among the turns as a result of failure of insulation caused by thermal ageing of insulation materials of wires is reduced, high-frequency coil loss caused by high-frequency proximity effect generated by compact arrangement of the turns is reduced, and heat of the wire coil is easy to radiate, so that uniform heating in large area of the rice cooker is facilitated.

The present application provides a flat panel transformer and a switching power adapter. The flat panel transformer includes a PCB winding and two magnetic cores. The two magnetic cores are respectively wrapped on both sides of the winding body of the PCB winding to form a closed magnetic circuit. A first set of welding points is arranged on the side of the primary winding of the PCB winding, anda second set of welding points is arranged on the side of the side of the secondary winding. The flat panel transformer is welded directly to an external circuit board through the first set of weldingpoints and the second set of welding points. In this way, the welding of PIN pins on the PCB winding board is not needed. Therefore, the processing order of the flat panel transformer is simplified,the fully automated processing is achieved, the processing time cost is educed, and the processing efficiency is improved. Moreover, the flat panel transformer can be installed vertically on the external circuit board through the first set of welding points and the second set of welding points. Compared with a horizontal flat panel transformer, the vertical installation mode reduces the space required for occupying the external circuit board and improves the space utilization rate of the external circuit board.

The invention discloses a novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber, comprising a static contact mechanism and a moving contact mechanism which are used in a matching way, a moving contact seat and an insulating tension pipe driving the moving contact mechanism to carry out on and off operations up and down; wherein the moving contact mechanism is axially arranged in the cylinder and is driven by the cylinder to carry out on and off operations, the static contact mechanism, the moving contact mechanism and the moving contact seat are axially arranged in an arc extinguish ceramic sleeve from up to down, the inner diameter of the cylinder is 40-50% less than that of a compressed air SF6 breaker cylinder, and the cylinder is a pneumatic cylinder with residual capacity in the interior after off operation of the moving contact mechanism. The invention has reasonable structure design, simple use operation and good use effect, and can realize triplex functions of the cylinder being used as a compressed air chamber and a thermal expansion chamber and remaining reasonable residual capacity, so that the self energy sulfur hexafluoride breaker can utilize electric arc energy to help extinguish the electric arc when in heavy cut-off current, thus greatly reducing operation power.

The invention discloses a surface breakdown type two-pair-rod electrode structural triggered vacuum switch. The triggered vacuum switch is of a three-section structure, comprising a corrugated ceramic housing at the upper section, another corrugated ceramic housing at the lower section, a metal shielding cover in the middle section, an upper electrode, a lower electrode, a triggering electrode, an upper electrode metal connecting rod, an upper electrode flange plate, a lower electrode metal connecting rod and a lower electrode flange plate; the upper electrode and the lower electrode are arranged in the metal shielding cover; the upper electrode flange plate is connected with the corrugated ceramic housing at the upper section; the lower electrode flange plate is connected with the corrugated ceramic housing at the lower section and forms a closed housing with the metal shielding layer; the upper electrode flange plate is connected to the corrugated ceramic housing at the upper section, and the lower electrode flange plate is connected to the corrugated ceramic housing at the lower section, so as to effectively increase the creepage distance between the upper electrode flange plate and the lower electrode flange plate. The triggered vacuum switch is high in working voltage, large in arcing area, high in transfer coulomb during conducting, long in service life under large current, uniform in electrode ablation degree, and high in power frequency withstand voltage after quenching of arc.

The invention discloses a transformer electrical fault gas simulation device, and relates to the field of the transformer fault diagnosis. The device comprises a tank body, a pressure balance releasing device, a temporary storage tank and a tee valve arranged at the top of the tank body; the tee valve is located at the top of the tank body, the tee valve is used for connecting the tank body, the pressure balance releasing device and the temporary storage device or any two of them; an electrode system for applying the electric field is arranged in the tank body, and the electrode layer comprises a high-voltage electrode and a ground electrode. The device can be used for electric fault simulation of the transformer to guarantee that the test process is completely isolated from the atmosphereinterference and the simulation test of different insulation mediums and different electric fields can be performed under the same test environment. The device provides basic reference data for gas dissolved in oil analysis of the novel transformer oil, thereby prejudging whether fault potential is existent when the novel transformer oil transformer is in operation through the gas dissolved in oil analysis technology, and quickly diagnosing the fault reason after the fault occurs.

The invention relates to an integrated high-voltage electric box for a battery system. The integrated high-voltage electric box is used for installing a high-voltage electric component of the battery system therein, wherein the high-voltage electric component comprises a positive electric component, a negative electric component and a functional electric component; the electric box comprises an upper cover and an installation base; the upper cover is detachably connected to the installation base; the high-voltage electric component is arranged between the upper cover and the installation base; and one side surface, connected with the upper cover, of the installation base is provided with an installation part for installing the positive electric component, the negative electric component and the functional electric component and separating the positive electric component, the negative electric component and the functional electric component in an insulating manner. According to the electric box provided by the invention, the positive electric component, the negative electric component and the functional electric component in the high-voltage electric component of the battery system are integrated into an integral structure through the arranged installation part, so that the battery system is high in integration degree, high in space utilization ratio, small in installation space and flexible and convenient to maintain.

The invention relates to a vertically grounding down-leading method for the center of a composite material tower and a tower thereof, wherein the ground wire cross arm is made from a metal material, a grounding downlead is led from the center of the ground wire cross arm, and the grounding downlead is vertically led down to be grounded from the right center of the composite material tower. If the lower half tower body is a steel tube, the grounding downlead can be directly connected with the steel tube to be grounded. The invention utilizes the insulating strength of the composite material tower wall, enhances the line insulating strength of lightening impulse resistance, avoids the short circuit of the grounding downlead and the composite material tower body and plays an insulation role of the composite material tower body. The grounding downlead is prevented from the damage by strong wind and other external forces owing to exposure outside because the grounding downlead is penetrated from the internal side of the tower; furthermore, the structure is simple, and easy to implement.

The invention discloses an ultralow frequency and oscillatory wave integrated partial-discharge-free cable performance detection device, belongs to the field of power cable test, and aims to design acable oscillatory wave partial discharge detection technology or an ultra-low frequency detection two-in-one device to realize cable partial discharge detection. The device comprises an inductor L, aswitch, a current source, a control system, a shielding box, a layer partition plate and a base, the layer partition plate is erected over the base and divides the vertical space into an upper part and a lower part, the inductor L is installed on the layer partition plate of the upper space, and the switch, the current source, the control system and the shielding box are installed on the base of the lower space. The current source and the control system are stacked together, and the projection position of the current source on the base coincides with that of the inductor L on the base. The switch is formed by stacking a plurality of single switches, the shielding box is arranged under the switch, and the projection position of the switch on the base is located in front of the projection position of the inductor L on the base; and the inductor L is electrically connected with the tested cable.

The invention discloses a coil connecting wire structure in a transformer, which comprises an A cylindrical coil and an X cylindrical coil. Both of the A cylindrical coil and the X cylindrical coil comprise a high tension coil and a medium tension coil, wherein an end extended section of the high tension coil of an A cylinder is connected with an head extended section of the medium tension coil of the A cylinder to form a first connecting wire, a notch is arranged peripherally on a static board of the high tension coil of an X cylinder, a connecting conductor is positioned at the notch, the connecting conductor penetrates through the static board along the radial direction of the static board, one end of the connecting conductor is connected with the first connecting wire and the other end is connected with the end extended section of the high tension coil of the X cylinder to form a medium connecting wire, then the medium connecting wire is connected with the head extended tension of the medium tension coil of the X cylinder to form a second connecting wire, and the second connecting wire is led to a wire outlet end. The invention can structurally meet the distance requirements of electrical insulation and also can simplify structure and facilitate construction.

A non-isolating circuit assembly includes a heat sink, a circular supporting member, a thermal insulation pad, and a light emitter. The heat sink has an inwardly-shrank platform. The circular supporting member is disposed around the outer edge of the inwardly-shrank platform. The thermal insulation pad is disposed on the inwardly-shrank platform and the circular supporting member. The area of the thermal insulation pad is larger than that of the inwardly-shrank platform, and the circular supporting member supports the outer edge of the thermal insulation pad. The light emitter is disposed on the thermal insulation pad.

The invention discloses a sealing structure of a DC structure. The sealing structure comprises a plastic shell and a base. A cavity is sealed and formed by the plastic shell and the base. A metal inner shell is sleeved in the cavity and is internally provided with two static contact points, a moving contact piece and a reciprocating driving mechanism formed by a coil and a moving iron core. The opening of the metal inner shell is provided with a ceramic piece in a sealing way. The two static contact points are fixed on the ceramic piece, and the upper ends of the two static contact points extend out of the ceramic piece respectively to form a connection end. Two leading out wires of the coil are led to the base from the ceramic piece respectively. According to the sealing structure, the ceramic piece and metal piece welded sealing is employed, the sealing effect is good, the environmental adaptation ability is stronger, the working temperature is improved to a range between 55 DEG C below zero to 85 DEG C from a range between 40 DEG C below zero to 85 DEG C, at the same time an upper step design is employed by the upper side face of the ceramic piece, the screen printed metallization can be completed in one time, the production efficiency is greatly raised, the lower step and connection ring welding are employed by the lower side face of the ceramic piece, and the insulation distance is increased.

The invention relates to an integrated high-voltage electrical box for a battery system. The integrated high-voltage electrical box comprises an upper cover and a casing, wherein the upper cover covers the casing and is detachably connected with the casing; a high-voltage component, a positive and negative electrode input copper bar and two positive and negative electrode output copper bars are mounted in the casing, one end of the positive and negative electrode input copper bar and one end of each of the two positive and negative electrode output copper bars are connected with the high-voltage component, and the other end of the positive and negative electrode input copper bar and the other end of each of the two positive and negative electrode output copper bars are located in the upper side edge position of the casing; a plugging structure which is used for enabling the other ends of the two positive and negative electrode output copper bars and the other end of the positive and negative electrode input copper bar to be safely exposed is arranged on the peripheral side of the upper cover. One input end and two output ends are arranged on a battery case, so that the electrical box has higher compatibility and can adapt to different project demands; the high-voltage component is mounted on the casing, so that the electrical elements are high in integration degree, high in space utilization rate and flexible and convenient to maintain; the plugging structure is arranged on the upper cover, and the high voltage input and output safety of the electrical box is improved.

The built-in fiber temperature signal transmission device for medium and high voltage system includes one built-in fiber with one end coupled to the emitting tube of signal treating and converting circuit and the other end coupled to low voltage side receiving tube, and one insulator covering the built-in fiber and its circuit in high voltage breaker or other electric equipment. The device has high measurement precision, high insulation strength and high measuring safety.

The invention discloses a vacuum relay. The vacuum relay comprises a vacuum chamber; a plurality of contact point rods are hermetically inserted in the side wall of the vacuum chamber; based on the assembling direction, the outer side of the side wall of the vacuum chamber among the contact point rods is provided with a plurality of longitudinal protruding ribs; the circumferential section of the side wall of the vacuum chamber among the contact point rods is rippled-shaped, so that the insulation distance among the contact point rods outside the vacuum chamber is changed from the original smooth arc distance or straight line distance to the curve distance, the insulation distance between the two contact point rods is greatly increased, and the voltage withstanding property of the relay is correspondingly greatly improved.

An ignition coil includes a primary coil (14), a secondary coil (16) disposed on an outer circumferential side of the primary coil and configured to be boosted by mutual induction with the primary coil, an outer periphery core (18) having an opposing surface (183), which is opposed to an outer peripheral surface (160) of the secondary coil, and an insulating member (20) disposed between the outer peripheral surface and the opposing surface. The secondary coil and the outer periphery core are arranged such that a shortest distance between the outer peripheral surface and an outer edge (183a, 183b) of the opposing surface is larger than a shortest distance between the outer peripheral surface and the opposing surface.

The invention provides a primary isolation power supply module for on-vehicle electronic equipment of a railway locomotive. A circuit board of the power supply module is divided into a mainboard and asynchronous rectifier plate. The synchronous rectifier plate includes a synchronous rectifier circuit and a synchronous rectifier control circuit. The above circuits, a transformer and heat sinks areall arranged on the mainboard; the heat sinks of the power module comprise a heat sink I located on the primary side of the transformer and a heat sink II located on the secondary side of the transformer; and a power MOSFET tube in a PWM control circuit adopts an all-plastic structure and is mounted on the heat sink I. The synchronous rectifier plate is mounted on the heat sink II. The mainboardadopts a double-sided device layout, and the top layer of the mainboard is provided with a high-height device, and the bottom layer of the mainboard is provided with a low-height surface mount device.The separate heat sinks are used for the input power MOSFET and the output synchronous rectifier plate, respectively, and the insulation distance between the two is large, reducing the common mode interference between the input and the output.

The invention discloses an electromagnetic relay with an injection molded yoke. The electromagnetic relay comprises a movable spring, the yoke and a coil. The yoke is in an L shape, the horizontal side of the yoke and an iron core in the coil are fixed at the bottom of the coil, and the vertical side of the yoke is parallel to the axis of the iron core. In the vertical side of the yoke, a plastic layer is formed on the face facing the coil in an injection molding mode and is used for being arranged between the yoke and the coil in an insulation mode, a plastic protruding bud is formed on the face opposite to the coil in an injection molding mode, and the yoke and the movable spring are fixed through the plastic protruding bud. By means of the electromagnetic relay, on one hand, on the premise that the winding space is not influenced, the insulation degree of the yoke and the coil can be improved, the position precision of an insulation component can be ensured, and assembling procedures are effectively reduced; on the other hand, when the yoke and the movable spring are fixed, it can be avoided that the movable spring is deformed due to stress generated on the movable spring, and the size uniformity of the movable spring is improved.