25results about How to "Reliable grounding" patented technology

A ground structure of a USB board end connector and the board end connector, wherein the ground structure comprises a shielding shell of the USB board end connector and a ground terminal arranged on the shielding shell, a lug directly extended from the shielding shell is arranged on the rear side of the shielding shell, the lug comprises an extension section and an inward bending section, one end of the extension section is connected with the shielding shell, the other end of the extension section is connected with one end of the inward bending section through a first circular arc section; a terminal lug extending outward is arranged on one side of the ground terminal, the lower part of the terminal lug is cut off, and the cut-off part is bent backward to form a stop lug; the inward bending section abuts against the terminal lug and is tightly contacted with the stop lug. The application has the advantage that the ground of the ground terminal is very reliable.

The utility model relates to the field of filters, and discloses a filter, which comprises a metal shell and a circuit board, a stud is arranged on the inner top surface of the metal shell and is used for mounting and fixing the circuit board and the metal shell; two ends of the circuit board are respectively provided with an input lead and an output lead; the circuit board is divided into a first part and a second part by taking the central axis as a boundary; the first part and the second part of the circuit board are respectively provided with mounting holes close to the middle parts, and are combined with the studs of the metal shell through screws. According to the filter, the filter circuit is arranged on the circuit board, and the functional ground wire on the circuit is connected with the metal shell through the stud and the mounting hole, so that reliable grounding is realized, the process and the structure of the product are simple and attractive, the automation degree is high, and the production is convenient.

The utility model provides a GIS isolation switch embedded monitoring device installation structure comprising a monitoring device installation housing, a cable connection cavity connected to the bottom of the monitoring device installation housing, and a circular thread observation seat connected to the side surface of the monitoring device installation housing. The bottom of the mounting shell is communicated with a cable connecting cavity, and a corrugated pipe connecting joint is connected to the lower part of the cable connecting cavity; a lighting monitoring through hole is formed in the middle of the circular threaded observation base, and a threaded connection port completely matched with threads of the GIS equipment observation window is formed in the end, away from the monitoring device installation shell, of the circular threaded observation base. The GIS switch observation window can be matched with the GIS switch observation window, the electronic monitoring device is fixedly installed on the GIS switch observation window, manual checking is not needed, a GIS disconnecting link can be observed and monitored through the electronic monitoring device, the electronic monitoring device can be protected, and normal operation of the electronic monitoring device in the open air environment is guaranteed.

The invention discloses a bushing type current transformer for a 35kV and below grade oil immersed transformer, which comprises a secondary winding and a grounding assembly, the grounding assembly comprises a metal shielding layer and a grounding lead, the metal shielding layer is of an annular structure, the metal shielding layer is attached to the inner diameter circumference of the secondary winding, and the grounding lead is connected with the secondary winding. A grounding lead is welded on the outer side surface of the metal shielding layer, the metal shielding layer is bound and fixed on the inner side of the secondary winding through an insulating material, and the grounding lead is connected with the transformer shell and is grounded. The metal shielding layer is additionally arranged in the inner diameter direction of the current transformer, namely the position between the current transformer and the high-voltage bushing, the metal shielding layer is provided with the grounding lead, and the grounding lead is led out to be fixedly connected with the transformer shell, so that reliable grounding is realized. When the transformer bushing has an insulation fault and main insulation breakdown, the leakage current can be timely led to the ground through the grounding wire provided by the mutual inductor, so that the safety of a person and a secondary circuit device is protected.

The utility model discloses an oil and gas pipeline grounding device which comprises a grounding fixing main body, a fixing head and a protective cover, the appearance of the grounding fixing main body is of a three-dimensional box body structure, and a three-dimensional space used for installing the fixing head is arranged in the grounding fixing main body. The fixing head is fixedly and stably connected with a round hole in one side of the grounding fixing body through a connecting piece, the top side of the fixing head is provided with a crimping groove recessed towards the inner center of the fixing head, one end of the crimping groove is communicated with the round hole in one side of the grounding fixing body through an inner through hole of the connecting piece, and a grounding wire is connected in the crimping groove. A long-strip-shaped crimping sheet matched with the crimping groove is arranged in the crimping groove. According to the utility model, the connection between the grounding wire and the oil-gas pipeline is more convenient, stable, safe and reliable, the corrosion rate is effectively reduced, the service life of the grounding wire is prolonged, the later maintenance of the grounding wire is facilitated, the maintenance cost is saved, and the oil-gas transmission safety is ensured.

The utility model discloses a repeater with a waterproof and dustproof structure, which comprises a power supply part and a control part which are connected in a covering manner. The control part cover plate is provided with a first open slot with a step, a sealing ring is embedded in the first open slot, and a main control unit, and a signal acquisition unit, a duplexer module and the like electrically connected with the main control unit are arranged in the slot; a power supply part box body is provided with a connecting hole and a screw hole, and a cover plate is connected with the box body through a hinge and is locked by a screw to be matched with a sealing ring to realize sealing. The box body is provided with a lattice flange joint, a conversion terminal strip, a power supply module, a control module, an anti-surge module and other components. The main control unit is an ARM chip main control unit and comprises a WIFI module, and the box body and the cover plate are made of metal explosion-proof materials. Through unique structural design, the repeater realizes waterproof, dustproof and explosion-proof functions, can effectively acquire and process signals and convert a stable power supply, has the capabilities of data processing display, wireless communication and surge protection, is convenient to maintain and overhaul, and is suitable for various complex environments.

The utility model relates to the technical field of communication, in particular to a shielding structure of an ADRV9009-X2 double-channel RF transceiver, which comprises a bottom plate, a PCB (printed circuit board) and a shielding cover, the PCB is arranged on the bottom plate, a plurality of TX antenna channels, a plurality of RX antenna channels and a plurality of ORX antenna channels are distributed on the PCB at intervals, and the shielding cover is arranged on the bottom plate. The shielding cover is provided with isolation cavities corresponding to the plurality of TX antenna channels, the plurality of RX antenna channels and the plurality of ORX antenna channels respectively, the shielding cover is covered on the PCB, and the isolation cavities on the shielding cover correspondingly cover the different types of antenna channels respectively, so that the space isolation of each cavity is realized; finally, signal leakage of antenna channels is reduced, and mutual interference is avoided.

The invention discloses an electrical test bracket for a drop-out fuse, relates to an auxiliary device for an insulation test of a circuit breaker, and aims to solve the problems of non-standard support, poor safety and low test efficiency of the conventional support device. According to the invention, two insulating pillars are vertically arranged on a metal chassis side by side; the number of the insulation clamping supports is two, the insulation clamping supports are correspondingly arranged at the top end of the insulation supporting column, each insulation clamping support is provided with a groove, and the two grooves are used for being matched with the connecting portions of the two ends of the drop-out fuse so that the drop-out fuse can be kept in a horizontal state. When the drop-out fuse is placed in the groove, the distance between the grounding end of the fuse and the ground is not less than 120cm. The beneficial effect is that the safety and the insulation reliability of the test process are significantly improved.

The utility model belongs to the technical field of voltage mutual inductance, and particularly relates to a voltage mutual inductance device with a cable plug type independent power supply. A voltage transformer for a power supply comprises an independent voltage iron core and an independent power supply primary coil wound on the independent voltage iron core; a phase iron core, a B phase iron core, a C phase iron core, and an A phase primary coil, a B phase primary coil and a C phase primary coil respectively wound on the A phase iron core, the B phase iron core and the C phase iron core are physically separated, the five transformers form a 5PT integrated structure through epoxy resin, and ferromagnetic resonance is effectively inhibited by combining iron core material optimization and anti-resonance design. Compact design is achieved, and narrow spaces such as a ring main unit are adapted. And the safety is improved. Magnetic field interference is avoided and metering precision is ensured.

The utility model provides a kind of shielding connector, the shielding connector includes connector body, shielding ring and sleeve component, wherein, load part for carrying cable shield net in cable is equipped on connector body;Shielding ring is sleeved on the connector body, and is configured to the radial pre-fixing of the cable shield net is carried out;Sleeve component is rotatably connected with the connector body, and in the rotation process, the shielding ring is compressed in axial direction, so that the cable shield net is fixed on the load part and is conducted with the connector body.The connector has strong self-adaptive ability, the pre-fixing in installation process, reliable shielding state, can solve the problems in cable shielding and shell conduction of field wiring connector in prior art, such as limited shielding wire specification, shielding layer is easily damaged in installation process, cost control is difficult and shielding state is unreliable.

The utility model discloses a cable grounding device, apply to wiring device technical field, including the shielding ring of inside having inner annular groove, the contact finger spring of being sleeved in the inner annular groove, after the shielding layer of cable is turned over and enters the shielding ring, the inside of contact finger spring is contacted with the shielding layer and the shielding layer partial shielding silk is embedded in the contact finger spring, the outside of contact finger spring is extruded contact with the inner annular groove, still include the metal shell of with shielding ring outer wall passes through O type ring connection, the sealing ring, the clamping claw and the galling nut of being connected in proper order in the front end of metal shell, and with the connecting nut assembly of metal shell rear end connection. This cable grounding device can fix the shielding layer of cable, and the production assembly is convenient, and shielding connection is stable and reliable.

The application relates to a primary-secondary fusion built-in isolation knife circuit breaker, which comprises a box body arranged on one side of a pole-mounted circuit breaker, a box cover which is detachably buckled and installed at the top opening of the box body, an isolation knife switch unit arranged in the box body, an electrical connection device arranged on the outer wall of the box body and electrically connected with the isolation knife switch unit, and the electrical connection device being electrically connected with the pole-mounted circuit breaker; a control mechanism is arranged on the front face of the box body, and the control mechanism is used for controlling the opening and closing states of the isolation knife switch unit; when the control mechanism drives the isolation knife switch unit to be in the closed state, the isolation knife switch unit is rotated to be in plug-in conduction with the corresponding static contact; when the control mechanism drives the isolation knife switch unit to be in the open state, the isolation knife switch unit is rotated to the opposite direction to be in plug-in conduction with the corresponding safety device, and reliable isolation is completed; the safety device is connected with a grounding bolt arranged on the side of the box body; and the application has the advantages of reasonable structure, good protection effect, stable and reliable opening and closing operation and guaranteed electrical isolation.

The invention discloses a cable connector and a connector assembly, and relates to the field of communication. A cable connector is used for being connected with a cable and comprises a shielding shell and a connecting terminal. The shielding shell is provided with a shielding cavity, the connecting terminal is arranged in the shielding cavity and insulated from the shielding shell, and the connecting terminal is used for being electrically connected with a core wire of a cable; the shielding shell is used for being electrically connected with a shielding structure of the cable, wherein the shielding structure is arranged on the outer side of the core wire. The connector assembly comprises the cable connector. The cable connector at least can solve the problems that a current cable connector is poor in grounding and shielding effect and the like.

The present invention relates to the technical field of charging piles, and in particular to a grounding detection circuit and control system, wherein the grounding detection circuit comprises a first voltage divider circuit and a first detection circuit, wherein the first voltage divider circuit comprises a capacitor CY1 and a capacitor C1 connected in series between an L line and a PE line, and the first detection circuit outputs a first detection signal to a controller according to the voltage across the capacitor C1. The present invention provides a grounding detection circuit that can accurately and quickly determine a grounding fault of a charging pile in real time and cut off AC input and DC output in a timely manner, and can meet the insulation withstand voltage and safety requirements of the charging pile, and has high safety and reliability.

The utility model relates to a hanging shaft type portal crane grounding device which comprises a grounding box used for being fixed with a portal crane moving frame, a guide sleeve is arranged in the grounding box, a hanging shaft is connected in the guide sleeve in a sliding mode, and the lower end of the hanging shaft penetrates through a bottom plate of the grounding box and then is connected with a grounding copper plate. A pressure spring is arranged between the grounding copper plate and the bottom plate, the bottom of the grounding copper plate is a sliding contact bottom surface, the periphery of the sliding contact bottom surface is a sliding contact inclined surface which is inclined towards the outer upper direction, and a cable plug connector is arranged on the grounding box, so that a grounding cable is connected with the hanging shaft through the cable plug connector. The hanging shaft type portal crane grounding device has good current conductivity, the bearing damage risk existing in a wheel direct grounding mode is avoided, the situation that a tension spring type contact shoe is clamped cannot occur, and the hanging shaft type portal crane grounding device is safe and reliable.

The utility model discloses a U-shaped multi-stage grounding ESD (Electro-Static Discharge) anti-static wrist strap connector, which comprises an ESD equipment host (1), the ESD equipment host (1) is provided with at least one plug-in ESD wrist strap connecting wire (7), and the ESD wrist strap connecting wire (7) is provided with a U-shaped connector (2); the ESD equipment host (1) is provided with a U-shaped notch (3), and the U-shaped connector is arranged in the U-shaped notch (3). The connector provided by the utility model adopts an embedded design, and the U-shaped connector is embedded into the U-shaped notch of the ESD equipment host, so that not only is the aesthetic property of the equipment improved, but also the grounding reliability and the use safety are remarkably improved through a multi-stage grounding design and an anti-falling structure.

A portable short-circuit grounding wire special-purpose wire clamp for busbar grounding comprises a column, the cross section of the upper portion of the column is square, the lower portion of the column is in a screw shape, and the small diameter of the lower portion is larger than the diagonal length of the cross section of the upper portion of the column. The upper end of the stand column is provided with a rectangular jack, an upper clamping plate fixedly penetrates through the jack, the upper clamping plate is L-shaped and is perpendicular to the stand column, and the upper clamping plate and the stand column form a clamping groove which is used for being clamped on a busbar; a lower clamping plate sleeves the upper part of the stand column in a sliding clearance fit manner, is parallel to the upper clamping plate and is used for being clamped below the busbar; two wiring screw holes are formed in the other end, corresponding to the clamping groove, of the lower clamping plate; the lower portion of the stand column is connected with a nut steel sleeve through threads, the lower end of the nut steel sleeve is coaxially connected with an insulating rod, and the upper end of the nut steel sleeve abuts against the bottom face of the lower clamping plate and is used for pushing the lower clamping plate to move upwards to clamp the busbar. The busbar grounding device has the advantages of being compact in structure, firm in installation, not prone to falling off and capable of ensuring reliable grounding of the busbar and guaranteeing operation safety.

The invention discloses a 220KV current transformer bushing end screen signal pickup device. The existing device has the problems of inconvenient installation, large signal attenuation and low detection efficiency. The invention comprises a high-frequency signal acquisition component and a low-frequency signal acquisition component which are threadedly connected. The high-frequency signal acquisition component comprises a high-frequency component housing, a horizontal baffle, a copper rod fixing block, a copper rod, and a high-frequency partial discharge sensor. The horizontal baffle and the copper rod fixing block isolate the copper rod from the high-frequency component housing. The low-frequency signal acquisition component comprises a low-frequency component housing, a cotter pin, a metal hose lead-out tube, a sensor mounting inner tube, a sensor mounting outer tube, and a low-frequency dielectric loss sensor. After the metal hose together with the high-frequency signal line and the low-frequency signal line are led out of the pickup device through the metal hose lead-out tube, a resin material is injected to seal the metal hose lead-out tube. The invention adopts an integrated sealing structure, has good shielding performance and anti-interference performance, is safe and reliable to use, and can effectively adapt to the on-site environment.

The invention provides etching equipment. The etching equipment comprises a chamber; the base is arranged in the cavity; the dielectric window is arranged above the cavity; the heating assembly is arranged in the central area of the upper surface of the dielectric window and used for heating the central area of the dielectric window, the heating assembly comprises a circular main body, and a plurality of fan-shaped through holes distributed in the circumferential direction of the circular main body are formed in the circular main body; the base is arranged between the dielectric window and the upper edge of the cavity and comprises an edge heating piece, and the edge heating piece is used for heating the edge area of the dielectric window; the pressing plate is arranged above the heating assembly; a supporting block is arranged on the dielectric window or the pressing plate, and the supporting block is configured to penetrate through the fan-shaped through hole. Edge and center heating is achieved through the heating assembly and the edge heating piece, the uniformity of temperature control is ensured, in addition, the fan-shaped through holes are formed, the heating assembly is conveniently supported by the supporting blocks, and the heating assembly is prevented from being extruded by excessive force.

This utility model discloses a quick-disassembly and grounding device for mobile steam injection boilers in oil fields, including a grounding wire and a grounding mechanism. The grounding wire connects the boiler body to the grounding mechanism, and the grounding mechanism includes a grounding rod with a repeatedly switchable anchoring mechanism inside. The repeatedly switchable anchoring mechanism in this utility model enables reliable grounding of the equipment and allows for quick disassembly and assembly, facilitating the movement and transport of mobile steam injection boilers in oil fields.

The invention discloses an FPSO (Floating Production Storage and Offloading) power system grounding configuration method, which comprises the following steps of: setting parameters of a grounding transformer and a grounding resistor according to the magnitude of the capacitance current of a power grid of an FPSO power system; according to the type of the FPSO power system, a high-voltage distribution board and a marine medium-voltage distribution board in the FPSO power system are connected with a grounding transformer, and a neutral point of a production high-voltage transformer is connected with a grounding resistor; determining a control mode between the distribution board and the grounding transformer according to the connection mode among the distribution board, the high-voltage transformer and the grounding transformer; and determining a grounding mode according to the type of the FPSO power system. After the high-resistance grounding system is adopted, redundant charges accumulated during short circuit can be discharged through the grounding transformer and the grounding resistor when a short-circuit fault occurs in a middle-high voltage power system, so that very high oscillation overvoltage possibly occurring in a ground insulation system can be prevented, and equipment of the power system is protected from being damaged.

This utility model relates to the field of plug technology and discloses a double-break switch plug, including a housing. The upper surface of the housing is equipped with a power-off button, a power-on button, and an indicator light. Both the power-off button and the power-on button can be pressed down and reset upwards. The lower surface of the housing is equipped with a PE pin arranged in a triangular pattern and two power-on pins. The power-off button, power-on button, indicator light, PE pin, and power-on pins are all connected to the wiring assembly inside the housing. This utility model achieves safe start-stop control. Pressing down the power-on button drives the slider to rise, causing the conductive spring to contact the power-on terminal and energize it. Pressing down the power-off button causes its lower wedge-shaped block to push the locking piece to release the power-on button. The power-on button resets under the action of a third spring, de-energizing it. This double-button mechanism avoids accidental operation, ensuring that power is only connected under clear instructions, improving safety. The operation process is also clear and easy for users to quickly master.

The invention discloses an electric equipment shell grounding reliability detection method, equipment, a device and a storage medium. The method comprises the following steps: measuring a first voltage between a ground port and a zero line port of electric equipment; when the first resistance value is smaller than or equal to a first preset threshold value, a first detection result is obtained; when the first resistance value is greater than the first preset threshold value, obtaining a second detection result; when the first voltage is not zero, the ground port and the zero line port are connected in series to a load resistor for discharging; after the discharging process lasts for a first preset time, measuring a second voltage between the ground port and the zero line port; and when the second voltage is not zero, reversely connecting the live wire port and the zero line port of the electric equipment, and measuring a third voltage between the ground port and the live wire port. The method can be widely applied to the technical field of equipment detection.

The utility model discloses a heavy load latent AGV of self -adaptation ground relates to heavy load AGV technical field, including AGV chassis, AGV chassis side fixedly be provided with the lamp area, through swing bridge type suspension release whole bridge rotation degree of freedom, four wheel layout is equivalent to 'three point one face' structure, ensure that all wheel train reliable ground connection on uneven ground, avoid wheel train from the root source to hang in the air, simplify suspension structure and improve complex ground traffic stability significantly, simultaneously, adopt the linkage of many filiform rods and lift the platform, by precision transmission mechanism drive high accuracy ball screw lifter of servo motor, combine closed loop control, realized very high lifting positioning accuracy and repeat stability, satisfy the demand of precision operation, response speed is fast, no hydraulic lag, combine diagonal laser obstacle avoidance radar, four around anticollision strip, emergency stop button, lamp area and multilevel safety protection of voice loudspeaker, realized 360 degree dead angleless safety guarantee, ensure the operation reliability under the emergency situation.

The utility model relates to an ink box, the ink box is detachably installed to the mounting portion of printer and includes the casing with the joint end, the joint end has the chip, the export part and the locked part, the chip has the ground contact, the mounting portion has the locking mechanism with the locked part cooperation, the ink box still includes the electrically conductive member of ground contact and locking mechanism electric connection, the electrically conductive member includes the first section and the second section of alternate arrangement, the extension direction of first section has the second direction component, the extension direction of second section has the third direction component, the first section and the second section are arranged between ground contact and locking mechanism, and the electrically conductive member has the contact portion with locking mechanism and the abutting portion with the chip. The electrically conductive member of the ink box can be set around the export part, and the plurality of intersecting sections constituting the electrically conductive member can effectively inhibit the conduction of the external force applied by the locking mechanism to the electrically conductive member to the chip, preventing the external force from interfering with the electrical connection between the electrically conductive member and the chip.