33results about How to "Improve grounding reliability" patented technology

The invention provides a control method for a grounding resistor of a rail vehicle and a grounding plate. The grounding resistor is controlled within a reasonable range so that the reliability in grounding is improved so as to enhance the safety in running. The control method comprises the following steps of (1) dividing the grounding resistor into three sub resistors which are connected with each other in series; (2) distributing resistance ranges of the sub resistors; and (3) controlling the sub resistors to control the resistances of the sub resistors within their own corresponding resistance ranges. According to the control method for the grounding resistor of the rail vehicle, the grounding resistor is divided into the three sub resistors, and then the resistance ranges of the sub resistors are distributed and the sub resistors are further respectively controlled according to the resistance range so as to control the sub resistors within their own resistance ranges; therefore, the grounding of a vehicle body is controllable and the reliability in grounding is improved so that the stability and safety in running are enhanced. According to the grounding plate provided by the invention, the grounding resistor is controlled by using the control method.

The invention discloses a circular socket connector capable of reliably conducting parts of contact elements and a shell. Two sides of a first contact element (13) are set into a first connection part; the other side of the first contact element (13) is set into a first welding end (133) after being bent; the surface of the first connection part is provided with a first barb (132); the head part (131) of the first connection part of the first contact element (13) and the first barb (132) are inserted into a first mounting hole (111); the tail part of the first connection part and the first welding end (133) are positioned on the outer part of the first mounting hole (111); one side of a second contact element (14) is set into a second connection part; the other side of the second contact element (14) is set into a second welding end (143) after being bent; the head part (141) of the second connection part and a second barb (142) are inserted into a second mounting hole (112); and the tail part of the second connection part and a second welding end (143) are positioned on the outer part of the second mounting hole (112).

The invention discloses an electrostatic powder spray gun with a built-in ion collector, which mainly comprises an electrostatic spray gun tube, an integrated spray gun locking cap, a discharge needle seat, a discharge needle, a flat spray flow guiding port and an ionic collecting ring and is characterized in that the ionic collecting ring is inlaid into the front part of the integrated spray gun locking cap, the outer side edge of the ionic collecting ring is exposed, and the rest part of the ionic collecting ring is inlaid into the inner part of the integrated spray gun locking cap. The electrostatic powder spray gun is easy to clean, has reasonable and compact structure and can completely avoid the problem of power concealment inside gaps; and a wire guiding passage is arranged on the side face of the integrated spray gun locking cap, a ground-return circuit lead wire penetrates inside the wire guiding passage, and one end of the ground-return circuit lead wire is electrically connected with the ionic collecting ring, therefore, the grounding reliability is high and the stability of a spraying process is improved.

The invention discloses a ground wire device and a laying method. The ground wire device is composed of a wire, a sleeve, sealing rings, a moisture-proof packing material and a grounding terminal, wherein the number of the sealing rings is at least three, the middle of the sealing ring is provided with a threading hole, the sealing rings are uniformly distributed in the sleeve from one end of the sleeve, two sealing rings in the sleeve are provided with the moisture-proof material therebetween, the wire penetrates through the threading hole and is fixed in the sleeve, the lower end of the wire is welded with the grounding terminal, the grounding terminal is in the shape of a cone, the vertex of the cone faces downward, and the area of the cone base is at least three times of the cross sectional area of the wire. The laying method comprises the steps of measuring a wiring environment, carrying out preservative treatment, constructing a ground wire pit, assembling the ground wire device, installing the ground wire device, detecting wire connection, and the like. Compared with a traditional ground wire device, the ground wire device disclosed by the invention has the characteristics that that the structure is simple, the layer is standard, the conductive performance between the grounding device and the ground is good, and the corrosion resistance is strong, thereby greatly improving the grounding reliability of electrical equipment, and laying a good foundation for safe electricity utilization.

The invention discloses a GIL equipment standard unit based on a novel internal structure. The GIL equipment standard unit comprises a GIL pipeline, a single post insulator assembly, a long conductingrod and a sliding three-post insulator assembly, wherein at least one end of the long conducting rod is supported by the single post insulator assembly, and the middle portion of the long conductingrod is supported by at least one sliding three-post insulator assembly. The invention also discloses a method for realizing shell deformation without influencing sliding of the three-post insulator byadopting the GIL standard unit. According to the invention, the contact seats at the two ends of the short conducting rod are used for absorbing the heated deformation of the GIL shell, so that the back-and-forth abrasion of the grounding copper electrode is greatly reduced, the grounding reliability of the copper electrode of the sliding three-post insulator is improved, the discharge fault of the sliding three-post insulator is avoided, and the operation reliability of equipment is improved.

The invention discloses an electromagnetic shielding cable and a preparation method thereof. The cable is characterized in that a double metal shielding structure in which an electromagnetic shieldingmetal layer and a copper mesh layer are integrated is arranged outside an electrostatic shielding layer; the copper mesh layer is a metal shielding net, and double-spiral copper sheet are wound on the electromagnetic shielding metal layer; and the electromagnetic shielding metal layer is a dense silver film which is formed by silver nanoparticles which grow on a polyimide base layer in agglomeration through a redox chemical process. The specific preparation method comprises the steps of polyimide solution configuration, polyimide curing and ring opening and silver ion reduction. Compared withthe prior art, the cable provided by the invention has the advantages of simple structure, convenient processing, light weight and good electromagnetic protection effect. Internal signal transmissionis greatly prevented from outside electromagnetic interference. The performance of electromagnetic wave shielding of the cable is further improved.

The invention is suitable for the technical field of communication equipment, and provides a telephone receiver component and mobile terminal equipment. The telephone receiver component comprises a plastic component, a metal upper cover embedded in the plastic component, conductive double-sided adhesive, a telephone receiver decorating part, and sealing foam; a first laser-etching area is arrangedon the surface of the metal upper cover exposed to the plastic component; a second laser etching area is arranged on the surface of the metal telephone receiver decorating part closes to one side ofthe conductive double-sided adhesive, and two opposite laterals of the conductive double-sided adhesive are respectively adhered with the first laser etching area and the second laser etching area. Byadopting the conductive double-sided adhesive and correspondingly arranging the first laser etching area and the second laser etching area, the contact area of the metal telephone decorating part andthe metal upper cover is increased, and the grounding area of the metal telephone receiver decorating part can be greatly increased, and then the grounding reliability of the metal telephone receiverdecorating part is greatly enhanced, and the electrostatic damage risk of the metal telephone receiver decorating part is reduced.

The invention relates to an electrostatic grounding device with a self-detection function. The electrostatic grounding device comprises a first grounding clamp, a second grounding clamp, a power supply, an indicating lamp, a junction box, an explosion-proof box, a current-limiting resistor and a wire, wherein the first grounding clamp is firmly clamped on a conductive part of equipment to be grounded, and the second grounding clamp is connected to a grounding system; and the first grounding clamp, the indicating lamp, the power supply and the current-limiting resistor are sequentially connected in series through the wire, and the indicating lamp is bright green when grounded equipment is reliably grounded. The grounding device is simple in structure, convenient to install and use and capable of accurately detecting and judging whether the grounded equipment is effectively grounded or not and displaying the grounding effect in a real-time and eye-catching mode through the indicating lamp. Meanwhile, the grounding clamps meet the grounding demands of different conductive materials through various types of design modes for the ejector pin, and lay a foundation for the further reliablegrounding of equipment. The grounding device has important significance for improving the grounding reliability of equipment and improving the production safety of flammable and explosive places.

The invention relates to a lightning impulse-resistant anti-thunder cable and a fabrication method thereof. A cross-linked polyethylene insulation filling core is arranged at the innermost layer of the anti-thunder cable, a copper wire sparse winding conductor is sparsely wound around an outer layer of the cross-linked polyethylene insulation filling core, a copper strip wrapping layer wraps an outer layer of the copper wire sparse winding conductor, a cross-linked polyethylene insulation layer wraps an outer layer of the copper strip wrapping layer, a copper wire sparse winding conductor shielding layer is arranged at an outer layer of the cross-linked polyethylene insulation layer, a copper strip wrapping shielding layer wraps an outer layer of the copper wire sparse winding conductor shielding layer, and an outer sheath wraps an outer layer of the copper strip wrapping shielding layer. The cable has the capability of high-impact voltage resistance and is applicable to equipment suchas a signal transferring and power transmission wire; and by the anti-thunder cable, the grounding reliability can be improved, the lightning current and ground potential are reduced, the back flashover and the step voltage are prevented, and damage caused by thunder is prevented or reduced.

An antenna device according to an embodiment of the present invention includes a dielectric layer, a first electrode layer disposed on a top surface of the dielectric layer, the first electrode layer including a radiation pattern, a second electrode layer disposed on a bottom surface of the dielectric layer, and a flexible circuit board connecting the first electrode layer and the second electrode layer with each other along a lateral portion of the dielectric layer. Efficiency of grounding and noise removing may be improved by the flexible circuit board.

A peg press-fitting structure for a connector includes a peg which is made from a metal plate to fix a housing of the connector to a circuit board, and which is attached to the housing by being press-fitted from the distal end of the peg into a peg attaching slot of the housing of the connector. The housing is provided with an end wall where an entrance of the peg attaching slot opens. A press-fitting position regulating projection, which regulates the press-fitting position of the peg by abutting against the end wall of the housing where the entrance of the peg attaching slot opens, is provided closer to the base end of the peg than a press-fitted portion of the peg that is press-fitted into the peg attaching slot.

The invention discloses a ground wire protection device. The ground wire protection device is composed of a protective sleeve, conductive rings, seal rings and damp-proof filler. A pay-off pipe is arranged in the center of the protective sleeve, annular protrusions which are axially perpendicular to the pay-off pipe are evenly distributed on the outer wall of the protective sleeve, and the annular protrusions and the protective sleeve are integrally formed. A wire passing hole is formed in the middles of at least two of the seal rings, the seal rings are evenly distributed inside the protective sleeve from the top end of the protective sleeve, and the damp-proof filler is filled between every two seal rings and between the seal rings and the inner wall of the protective sleeve. The number of the conductive rings is at least 3, the conductive rings are evenly distributed inside the pay-off pipe, the conductive rings is additionally provided with wiring holes and conductive paste layers are additionally arranged inside the wiring holes. Compared with a traditional ground wire device, the ground wire protection device has the advantages that the conductive performance between a ground wire and the ground is improved, the corrosion resistance of the ground wire is improved, the effective service life of the ground wire is effectively prolonged, the detecting times are reduced, great convenience is brought to ground wire detection and replacement operations, the grounding reliability of electric equipment is improved, meanwhile, the labor intensity of ground wire detection, maintenance and replacement is reduced, and the working efficiency of circuit protection is improved.

The invention belongs to the technical field of machine room lightning protection grounding. The invention particularly relates to an urban rail cloud platform machine room matrix type lightning protection grounding system and an access method thereof. The method comprises the following step that: electric equipment is equipotential through a grounding cable and is annularly accessed to a matrix type grounding body network. According to the invention, problems of worse grounding effect and unstable grounding caused by inconsistent grounding points and complex process in the prior art are solved; and the system and the access method have the beneficial technical effects of ensuring the overall reliability of grounding, avoiding the influence of the structure on the grounding effect, and simplifying and improving the stability of the system.

The invention belongs to the field of monitoring of an electronic device transformer sleeve pipe, in particular relates to a sleeve pipe end screen leading-out device of a dry type transformer. The sleeve pipe end screen leading-out device comprises an end screen connection plug, a grounding press spring, a tap installation seat and a tap grounding protection cap, wherein the tap grounding protection cap, the tap installation seat and a sleeve installation flange are sequentially connected, the end screen connection plug is arranged in a cavity jointly formed by the tap grounding protection cap, the tap installation seat and the sleeve pipe installation flange, the grounding press spring sleeves the end screen connection plug, one end of the grounding press spring is in contact with the end surface of an installation step of the end screen connection plug, and the other end of the grounding press spring is in contact with a reducing end surface of the tap installation seat. By the sleeve pipe end screen leading-out device, the technical defect brought by manual welding and an elastic sheet type leading-out device is avoided, an end screen is enabled to be reliably grounded, and the application safety of a product is improved.

The invention discloses an electronic tuner and an electronic apparatus, the electronic tuner is provided with a case configured with a frame-like outer circumferential portion and a lid portion that covers a space formed by the outer circumferential portion, and an elastic grounding piece formed by cutting open a portion of the case in the shape of a tongue piece is caused to protrude outside of the case, thus grounding the elastic grounding piece to a grounding portion of an external electronic device.

A ground mobile direct strike lightning protection system, including lightning monitoring and early warning system, lightning receiving device, lifting system, grounding system and automatic control system; the lightning monitoring and early warning system monitors the atmospheric electric field environment around special vehicles in real time; the automatic control system is based on The monitoring data of the lightning monitoring and early warning system activates the corresponding level of early warning; according to the situation, it sends a rising or falling signal to the lifting system and the lightning receiving device, and sends a grounding start signal or an end grounding signal to the grounding system; Stand upright to enter the direct lightning lightning receiving mode or fold down to put it away; the lifting system rises or falls according to the received signal; the grounding system quickly and reliably grounds or withdraws special vehicles that are in the process of moving or temporarily parked in the field. The invention can provide effective direct lightning protection for special vehicles in the process of moving or under the condition of temporary parking in the field.

Embodiments of the invention disclose a flexible circuit board and an electronic apparatus. The flexible circuit board comprises a flexible circuit board body, a board-to-board connector BTB and at least one copper-exposing region, wherein the at least one copper-exposing region comprises at least one grounding through hole; and the flexible circuit board body is grounded through the at least onegrounding through hole. The technical scheme provided by the invention has the advantages of interference resistance and improvement of user experience.

The invention discloses a hood type power distribution terminal electrical assembly grounding device. The hood type power distribution terminal electrical assembly grounding device mainly comprises a cover plate, and a support and a grounding terminal which are installed on the cover plate. The hood type power distribution terminal electrical assembly grounding device is characterized in that a plurality of installation holes connected with an external member and with metal pieces embedded in are formed in the cover plate, a grounding piece is arranged on the inner side of the cover plate, the grounding piece is connected with a metal piece and a support through connection pieces, and the grounding terminal is connected with the grounding piece. The hood type power distribution terminal electrical assembly grounding device not only can simplify an assembly mode, but also greatly improves ground connection reliability of a power distribution terminal.

An antenna element of embodiments of the present invention comprises: a dielectric layer; a first electrode layer disposed on an upper surface of the dielectric layer and including a radiation pattern; a second electrode layer disposed on a bottom surface of the dielectric layer; and a flexible circuit board connecting the first electrode layer and the second electrode layer to each other throughthe side of the dielectric layer. It is possible to improve the grounding and noise removal efficiency through the flexible circuit board.

The invention relates to the technical field of gas-insulated metal-enclosed transmission lines, in particular to a GIL and a post insulator assembly thereof. The post insulator assembly comprises a post insulator provided with a plurality of posts. One end of each post adjacent to the post insulator axis is fixed to each other, and the other end of each post is provided with an insert for connecting a particle trap. Each insert is provided with a guide block mounting seat provided with a guide block for supporting the casing inner wall of the GIL in the direction perpendicular to the post insulator axis in the guide mode, each guide block is provided with a grounding electrode disposed in the direction of the post insulator axis in the guide mode, one side of each guide block facing the corresponding insert is provided with more than two guide block support springs, and the side of each grounding electrode facing the corresponding insert is provided with an electrode spring. The guideblock support springs are arranged along the axial direction of the corresponding post insulator or in the circumferential direction around the axis of the corresponding post insulator.

The invention provides a terminal voltage measurement network of a split type air conditioner interconnection line, and the terminal voltage measurement network comprises an input and output line 1, an input and output line 2, an input and output line 3, an input and output line 4 and a PE line which are sequentially connected in series with an inductor L2 and an inductor L1, an input and output line node is connected in parallel with a capacitor C2 and a resistor R2, a capacitor C1 and a resistor R1, and a capacitor C3 and a resistor R3, and the input and output lines are connected with the extraction radio frequency output end Line RF and are used for extracting a disturbance voltage radio frequency signal. Through the technical scheme of the invention, a more stable power supply or signal path can be provided, and meanwhile, an interference voltage signal is extracted; interference voltage signals can be extracted according to the source direction of the interference voltage signalof the interconnection line, product research and development or rectification is more targeted, terminal disturbance voltage measurement of the air conditioner interconnection line can be conducted at the same time, the air conditioner interconnection line can be directly placed on a terminal disturbance voltage grounding reference flat plate, and grounding reliability is improved. And an external interference signal is isolated to the greatest extent.

The invention relates to a base-plate grounding device of a high-voltage mutual inductor. The grounding device comprises a tool base plate (1), a cylinder (2) and a swinging grounding mechanism; the tool base plate (1) is a conductive metal plate, a cylinder (2) body is fixedly connected with the tool base plate (1), one end of the swinging mechanism is rotationally connected with the tool base plate (1), the other end of the swinging mechanism is provided with grounding copper columns (4), the grounding copper columns (4) are connected with a grounding wire, and an output shaft of the cylinder (2) is rotationally connected with the middle portion of the swinging mechanism via a connecting rod (5). During use, a base plate of the high-voltage mutual inductor is arranged on the tool base plate (1), the output shaft of the cylinder (2) moves to drive the swinging grounding mechanism to swing, so that the grounding copper columns (4) make contact with the tool base plate (1) and the base plate of the high-voltage mutual inductor is grounded. Compared with the prior art, the grounding speed of the base plate of the high-voltage mutual inductor is improved, and the reliability and safety are high.

The invention discloses a sealing assembly of an oil-filled cable terminal, comprising: a metal tube; a first elastic sealing member molded on the outer peripheral surface of the metal tube, and used to realize the axial direction of the oil-filled cable terminal; sealing; and a second elastic seal molded on the end of said metal tube for achieving radial sealing of said oil-filled cable termination. In the present invention, the first elastic sealing member and the second elastic sealing member of the sealing assembly can realize axial sealing and radial sealing of the oil-filled cable terminal respectively, thereby improving the sealing performance of the oil-filled cable terminal. In addition, the metal tube of the sealing assembly has good electrical conductivity, which improves the grounding performance of the cable.

The invention discloses a grounding wire protection device. The grounding wire protection device is composed of a sheath, a conductive ring, a sealing ring and a moisture-proof filler. A release pipe is arranged in the center of the sheath, and its outer wall is uniformly arranged in an annular ring perpendicular to the axial direction of the release pipe. It is raised and integrally formed with the sheath. There are at least two sealing rings with wire holes in the middle, which are evenly distributed inside the sheath from the top of the sheath, and between the two sealing rings and between the sealing ring and the inner wall of the sheath. Set moisture-proof filler, at least 3 conductive rings, which are evenly distributed inside the pay-off pipe. The conductive rings are provided with wiring holes, and a conductive paste layer is provided in the wiring holes. Compared with the traditional grounding wire, the invention improves the corrosion resistance of the grounding wire while improving the conductivity with the earth, effectively prolongs the effective service life of the grounding wire, reduces the number of inspections, and provides great convenience. The grounding wire detection and replacement operation improves the grounding reliability of electrical equipment, reduces the labor intensity of grounding wire detection, maintenance and replacement, and improves the efficiency of line protection operations.

The invention discloses a GIL equipment standard unit based on a new type of internal structure, including a GIL pipeline, a single-pillar insulator assembly, a long conductive rod and a sliding three-pillar insulator assembly; at least one end of the long conductive rod is supported by a single-pillar insulator assembly, and the long conductive The middle of the pole is supported by at least one sliding three-post insulator assembly. The invention also discloses a method for using the above-mentioned GIL standard unit to realize that the shell deformation does not affect the sliding three-pillar insulator. The invention utilizes the contact seats at both ends of the short conductive rod to absorb the thermal deformation of the GIL shell, greatly reduces the back-and-forth wear of the grounding copper electrode, improves the grounding reliability of the copper electrode of the sliding three-pillar insulator, avoids the discharge failure of the sliding three-pillar insulator, and improves the equipment. operational reliability.

The invention relates to an instrument desk tubular beam grounding device and an instrument desk tubular beam. The instrument desk tubular beam grounding device comprises a tubular beam connecting end, a vehicle body connecting end and a connecting pipe. The tubular beam connecting end and the vehicle body connecting end are fixedly connected to the two ends of the connecting pipe correspondingly.The grounding reliability of an electrical part in an instrument desk is improved, and the grounding resistance of an electric appliance used for the instrument desk on the tubular beam is reduced. The overheat phenomenon of the tubular beam is reduced.

The invention provides a control method for a grounding resistor of a rail vehicle and a grounding plate. The grounding resistor is controlled within a reasonable range so that the reliability in grounding is improved so as to enhance the safety in running. The control method comprises the following steps of (1) dividing the grounding resistor into three sub resistors which are connected with each other in series; (2) distributing resistance ranges of the sub resistors; and (3) controlling the sub resistors to control the resistances of the sub resistors within their own corresponding resistance ranges. According to the control method for the grounding resistor of the rail vehicle, the grounding resistor is divided into the three sub resistors, and then the resistance ranges of the sub resistors are distributed and the sub resistors are further respectively controlled according to the resistance range so as to control the sub resistors within their own resistance ranges; therefore, the grounding of a vehicle body is controllable and the reliability in grounding is improved so that the stability and safety in running are enhanced. According to the grounding plate provided by the invention, the grounding resistor is controlled by using the control method.