12results about How to "Avoid short circuit failure" patented technology

This invention relates to a method and apparatus for replacing an uninterrupted power supply (UPS) energy meter. The method includes: connecting an energy meter replacement device in parallel to the incoming and outgoing line sides of the energy meter to be replaced; the energy meter replacement device acquiring zero-crossing signals of the incoming and outgoing line voltages of the energy meter to be replaced; determining whether the three-phase wiring sequence is consistent based on the zero-crossing signals; if the three-phase wiring sequence is consistent, the energy meter replacement device switching the main circuit to the backup circuit to ensure uninterrupted power supply to the user side; removing the energy meter to be replaced and installing a new energy meter while the backup circuit is in operation; and acquiring electrical parameter data in real time during the meter replacement process; detecting whether any abnormality occurs during the meter replacement process based on the electrical parameter data; if an abnormality occurs, triggering a protection action and disconnecting the bypass circuit; and after the meter replacement is completed, the energy meter replacement device switching the circuit back to the main circuit and generating a meter replacement operation log.

The application relates to the technical field of dry transformers, and particularly discloses an amorphous alloy dry transformer with a double-layer shell structure, which comprises a mounting box body, a damping pad is fixedly connected to the bottom of the mounting box body through a support, a rain shelter is fixedly connected to the top of the mounting box body through a support, cooling devices are fixedly connected to the two sides of the mounting box body, and a transformer body is fixedly connected to the bottom of the mounting box body through a damping device. The amorphous alloy dry transformer with the double-layer shell structure is provided with the damping device, can absorb most of the vertical and horizontal vibrations generated during the operation of the transformer, and can automatically clean dust on the air inlet of the cooling device and scatter and agitate the drying agent by using the weakened slight vibration, so that the cooling and ventilation effect is improved.

This utility model discloses a moisture-proof and sealed installation structure for the control panel of a pellet oven, comprising: a controller; and a protective unit, wherein the protective unit is installed on one side of the controller surface to protect the controller surface. This utility model uses the protective unit installed on the surface of the controller to seal and protect the control panel on one side of the controller, preventing prolonged contact between external humid air and the control panel. A locking unit controls the opening and closing of the protective unit; opening the protective unit allows operation of the controller, while closing the protective unit prevents external moisture from contacting the control panel. Finally, a moisture-proof unit dehumidifies the interior of the closed protective unit, improving safety, preventing short-circuit malfunctions of the controller, and effectively extending its service life.

The utility model relates to the technical field of engine cover plate, especially relates to a dustproof and waterproof sealed engine cover plate, including first fixed plate and second fixed plate, the first fixed plate and second fixed plate between joint sealing assembly fixedly connected have, the sealing assembly upper end sleeve joint has the protection assembly, protection assembly upper end four corners all threadedly connected have bolt. The utility model discloses a dustproof and waterproof sealed engine cover plate, along with bolt tightening, protection assembly presses sealing assembly, and sealing washer is extruded and produces elastic deformation, and tightly fits the lower end surface of aluminium alloy shell, forms an elastic barrier, and the dust and moisture of outside are blocked outside the edge of cover plate, simultaneously, the sealing ring is extruded by the fire -retardant inner shell, fills the gap between sealing washer and fire -retardant inner shell, constructs the second sealed defense line, effectively avoids the trouble that engine causes dust accumulation to lead to poor heat dissipation, causes circuit short circuit because of water vapor erosion, prolongs the maintenance cycle and the service life of engine.

The utility model relates to a kind of assembled conductive copper bar structure, specifically a kind of assembled high load flow distribution's conductive copper bar structure, including assembling seat, two sides on the assembling seat are provided with slot, the side of the assembling seat is provided with fixed seat and the holding plate of the side of the fixed seat, copper bar body is provided between the assembling seat and fixed seat, adjusting mechanism and the limiting fastening mechanism for being used to the assembling of copper bar body are provided in the assembling seat, the adjusting mechanism is cooperated with the transmission mechanism of the side of the fixed seat, the utility model is inserted into the cooperation between the assembling seat and fixed seat, realize the way of inserting into to the superposition fixed of multilayer copper bar, need not be on copper bar hole for bolt fixed, effectively simplify installation and dismounting process, avoid the copper bar structure strength weakening and stress concentration problem possibly caused by hole simultaneously, guarantee the structural integrity and mechanical properties of copper bar.

This invention provides a voltage detection device, including a voltage detection head, a voltage detection unit, and an operating lever. The voltage detection head includes a voltage detection probe, a rotating ball integrally connected to the voltage detection probe, and a support column with threads at its lower end. The voltage detection unit includes a rotating assembly, a switching assembly, a steering mechanism, a first detection module, and a second detection module. The support column passes through the switching assembly and is movably connected to the steering mechanism. Rotation of the support column presses and activates the switching assembly. The support column is electrically connected to the first detection module, and the switching assembly is electrically connected to the second detection module. In this invention, the voltage detection head drives the rotating ball to rotate, which in turn presses and activates the switching assembly. The second detection module provides immediate feedback on whether the voltage detection operation conforms to the operating specifications, resolving the problem of ineffective voltage detection and eliminating significant safety hazards. Furthermore, the independent first and second detection modules effectively prevent the second detection module from short-circuiting due to strong voltage or current generated during voltage detection, further ensuring the reliability of the voltage detection operation specifications.

The utility model relates to LED packaging technical field especially a sealed protection type patch type LED light emitting diode, including fixed end electrically connected piece, LED wafer sets up on fixed end electrically connected piece, and the fixed end electrically connected piece and the welding end electrically connected piece are embedded in the one side surface position of the encapsulant, and the window is seted up on the encapsulant, and the LED wafer is exposed in the window middle position, and the gold wire both ends are connected with LED wafer and welding end electrically connected piece electricity respectively, and the light -transmitting body is installed in the edge position of window, and with the encapsulant constitutes sealed cooperation, can effectively avoid the light flicker, the brightness attenuation, the local extinguishing etc. phenomenon, and the luminous performance is more stable. Meanwhile, the short circuit failure caused by the welding spot corrosion aggravation is eliminated, the risk that the LED module burns is reduced significantly, the service life is greatly prolonged, the maintenance replacement frequency is reduced, and the use cost of each application field is reduced.

The application provides a battery monomer, a battery device, an energy storage device, an energy storage system, a power consumption device and a charging network. The battery monomer comprises: a shell having a containing cavity; an electrode assembly arranged in the containing cavity; and a support arranged in the containing cavity, wherein the support and the electrode assembly are distributed along a first direction, and the support is located between the electrode assembly and the shell; wherein along the first direction, the thickness dimension of the support is a, the height dimension of the shell is h, and the thickness dimension a of the support and the height dimension h of the shell satisfy: 4x10 ‑4 ≤a / h≤30x10 ‑4 The application can effectively balance the battery capacity and the heat dissipation requirement, and guarantee the cycle life of the battery.

The utility model provides a kind of electromagnetic heating device of wire drawing machine die head, it is related to plastic weaving industry production technical field, including wire drawing machine die head, fireproof insulation cotton, high temperature cable, frequency conversion controller, insulating device, thermocouple;Fireproof insulation cotton is set in wire drawing machine die head outside, high temperature cable is successively wound in the outside of fireproof insulation cotton along the same direction, frequency conversion controller is connected respectively with the both ends of high temperature cable, insulating device is set in the outside of high temperature cable, thermocouple is set on insulating device;The utility model has adopted more suitable structure design of wire drawing machine die head, realized heating fast, temperature stability, energy conservation, safe and reliable technical effect, improve the product quality and production efficiency of plastic weaving bag wire drawing process.

This invention discloses a multi-winding motor conductive ring structure, stator, and wind turbine generator. The motor conductive ring structure includes U, V, and W phase conductive ring groups. These three phase groups are arranged in rings from the outside inwards, with spacing between them, and are located on the same horizontal plane. Each phase group consists of 2N full-circle windings and 2N minor-arc windings. The virtual circle spacing formed by every two minor-arc windings is located between two full-circle windings. All conductive rings are located on a concentric circle, forming 4N sets of windings, evenly divided into two groups. Each group is individually connected to a corresponding converter. This invention divides multiple sets of windings into two equal parts. By combining full-circle windings and minor-arc windings, the winding current located within the two semicircles is introduced into the same converter, achieving redundancy design and uniform motor stress, avoiding vibration, noise, and other faults. It also reduces axial length and material usage, thereby reducing the unit's weight and manufacturing cost.

This utility model relates to a heat-dissipating receiver housing in the field of receivers. It includes a middle housing with a shelf inside. Compression springs are installed on both the left and right sides of the inner wall of the shelf, and clamping plates are attached to the ends of the compression springs. Thermally conductive silicone blocks are installed around the top surface of the shelf. After a circuit board is placed in the inner cavity of the shelf, the compression springs on the shelf drive the clamping plates closer to the circuit board, causing the clamping plates to engage with the outer side of the circuit board. Compared to traditional screw fixing methods, this mechanism allows for quick tool-free assembly and disassembly. The thermally conductive silicone blocks attract and dissipate the heat generated by the circuit board during operation, thus achieving efficient heat dissipation and preventing heat accumulation that accelerates component aging.

The invention relates to the technical field of high-voltage electrical equipment insulation resistance measurement, in particular to a switch cabinet insulation resistance measurement system based on a direct current generator, which comprises a state acquisition module for automatically acquiring a switch position state signal and a cable side electrification state signal and transmitting the signals to a locking control module; the locking control module performs logic judgment on the input signal, and outputs a measurement permission instruction to the measurement execution module when a safety condition is met; the measurement execution module starts a direct-current generator to generate direct-current high voltage, constructs an insulation resistance measurement loop and calculates an insulation resistance value; and the result display module displays the measurement result and verifies the integrity of the loop through a voltmeter arranged on the cable side. According to the invention, remote insulation measurement is realized through a modular architecture, and the safety risk caused by manual entering into a high-voltage interval is effectively eliminated.