17 results about "Electric shock" patented technology

The invention discloses a leakage protection device which can prevent electric shock accidents caused by faults of electric equipment and also can prevent the electric shock accidents caused by the fact that an earth wire is electrified accidently. The leakage protection device is also provided with a weak current detection sensor, a voltage comparator circuit and a one-way output circuit; an iron core of the weak current detection sensor is wound by a primary winding and a secondary winding; a detection circuit which is formed by serially connecting the primary winding with a current-limiting capacitance resistance element is connected between the earth wire and a neutral wire; a standard voltage obtained from a stable-voltage power supply is input into an input end of the voltage comparator circuit; an output end of the secondary winding of the weak current detection sensor and the other output end thereof are respectively connected with the other input end of the voltage comparatorcircuit and a cathode of the output end of a rectifying circuit; and the output end of the voltage comparator circuit is connected with a driving circuit of an electromagnetic coil through the one-way output circuit.

A waterproof explosion-proof and electric shock-proof socket comprises a shell, a socket cover, a gasket, a safety board, energized plugs, safety hooks, a sprint seat, wiring columns and a safety spring, wherein the gasket is fixedly arranged at the top of the shell; the edge of the gasket is fixed on the inner wall of the shell; the gasket and the shell form a sealed energized room; the wiring columns and the spring seat are fixedly arranged on the bottom surface of the inner cavity of the energized room; the bottom part of the safety spring is fixed in the spring seat, and the top abuts against the gasket; and the gasket can slightly float vertically. When the socket is standby, an electrical apparatus plug is not inserted, the safety spring lifts the gasket, the energized plug in the socket cover is uncharged and safe, and the electric shock-proof purpose is achieved; after the plug is removed, the socket is back to the safety state in the standby case. Only a standard electrical apparatus plug can be inserted in the plug cover, the safety hooks are ejected after insertion, and then, the energized plugs can be pressed down to be contacted with the wiring columns for energizing, and the electrical apparatus plug is equivalent to a key for the plug cover.

The invention discloses a safe lockable power supply plug device, which comprises a power socket arranged in a wall body and a plug member used for being inserted into the power socket for cooperatedconnection. The power socket is internally provided with an insert slot, an opening of which faces left. The inner right end wall of the insert slot is provided with a power supply hole for connectingwith commercial power. The inner top end wall of the insert slot is provided with an upper slide groove communicated with the insert slot. The power socket under the insert slot is provided with a push slot, an opening of which faces left. The right end of the push slot is provided with a lower slide groove communicated with the insert slot. The power supply plug device is simple in structure, low in production cost and safe and stable in power supply, effectively prevents the cases of electric shock accidents and ensures life safety of children at home, is convenient in plug power-on operation, avoids sudden power failure of electrical equipment because the conducting plug is detached from the power supply hole when the circuit is kicked, and meets existing plug and power-on use requirements.

The present invention discloses a short circuit and detection dual-purpose device used for relay protection. The short circuit and detection dual-purpose device is characterized by comprising a cuboid operation box, wherein the operation box is equipped with a buckle-type opening-closing door, and a fuse placement fastening groove is arranged in the door; the operation box is additionally equipped with a circuit on-off selection switch, a circuit on-off indication lamp, a rotary switch, a voltage display meter, a first current display meter and a second current display meter, a wiring port is arranged on the side surface of the operation box, and a short circuit alarm circuit and a detection circuit are arranged inside the operation box. Compared with the prior art, the advantages of the present invention are that: the short circuit and detection dual-purpose device is simple and reliable in circuit design, the personal low-voltage electric shock caused by that the operation personnel touch a test wiring wrongly in a live wire manner and the damage of a relay protection tester and a protection device plug-in are avoided, the personal injury and the equipment damage caused by a wrong short circuit during a short circuit test process are avoided effectively, and the accuracy and the safety during the short circuit test are improved.

The invention discloses an intelligent substation signboard, and relates to a substation signboard. The substation signboard comprises a plurality of split display plates, wherein the plurality of split display plates are sequentially arranged from left and right and are connected by virtue of connecting terminals; each split display plate comprises an LED display device and a shell; and the LED display devices are arranged on the shells. By arranging the split display plates and by arranging sensors and voice prompt devices in the split display plates, the substation signboard can implement voice prompting when foreign personnel enters a warning area by accident, so that the occurrence of an electric shock accident is prevented and a warning effect is enhanced. Hanging assemblies are arranged, and by virtue of magnets in the hanging assemblies, the intelligent substation signboard can be adsorbed on the surface of metal or the intelligent substation signboard can be adsorbed on the surface of a smooth wall, a tile wall, glass and the like by virtue of rubber suckers, so that the substation signboard is convenient to hang and is broad in hanging scope. The signboard provided by the invention is used for displaying and identifying early warning information in the work of a substation.

The invention discloses an electric power distribution cabinet, comprising a top seat arranged in a cabinet body and a radiator used for cooperating with the top seat, a plug block is fixedly arranged on the top of the radiator, and the left end of the plug block A first slot hole is arranged on the surface, a second slot hole communicated with the first slot hole is arranged on the right end surface of the insert block, a power conduction head is arranged in the middle of the top surface of the insert block, and the top seat bottom The end face is provided with a slot that extends upward and is used to cooperate with the insert block; in the present invention, the radiator is securely and stably fixed on the top of the cabinet, and the hot air on the top is discharged, and the heat dissipation effect is good, effectively avoiding the An electric shock accident occurs when the radiator is installed and removed, the whole device is convenient and quick to operate, and the installation and removal efficiency of the radiator is high.

The present invention relates to a system for an electric vehicle integrated with a road. Specifically, the present invention relates to a system for energy supply of an electric vehicle, which is innovatively solved by protective measures against electric shocks of vehicles running on electric current. The related design of the system is a TN-C- system, TN-S- system and TN-C-S- system. The systemis configured in a manner that: an additional second protective conductor (22) is provided, which is connected parallel to a first protective conductor (20), or a trolley wire includes two operatingcurrent conductors (18), at least one protective conductor (20) is provided, a vehicle (12) can be connected to the trolley wire through a first current collector (14) and is connected to the protective conductor (20) via the second current collector (14), and the second current collector (14) is connected to at least one potential balance (32) of the vehicle (12).

The invention discloses a toy lie detector. The toy lie detector comprises a case, a circuit board and a battery. The circuit board is provided with a signal receiving circuit, an analysis circuit, a signal output circuit and an analysis switch matched with the analysis circuit. When two or more groups of signals received by the signal receiving circuit change, the analysis circuit controls the signal output circuit to output currents. The toy lie detector further comprises a horn connected with the signal output circuit through a wire. According to the toy lie detector, due to the fact that the horn is connected with the circuit board through the wire, when the circuit board generates the small currents and electric shock is formed, the horn makes a sound to remind users that the signals transmitted from the bodies of the users are different from initial signals, and whether the users lieor not can be judged conveniently through the sound of the horn.

The invention discloses an inspection tool for static contacts of 10kV switch cabinets. The inspection tool comprises a slide portion, an expansion portion, a butting portion and an isolation portion.The slide portion comprises a square base frame, rollers are arranged on the left side of a left strut of the base frame, rollers are arranged on the right side of a right strut of the base frame, mounting holes are formed in the upper end surfaces of the left strut and the right strut of the base frame, and a front through hole and a rear through hole which are perforated through in the front-rear directions are formed in the middles of a front strut and a rear strut of the base frame. The inspection tool has the advantages that the inspection tool is provided with a transparent insulating partition plate, and accordingly accidental electric shock phenomena can be completely prevented; furthermore, the transparent insulating partition plate is hinged to a square base, accordingly, influence on operation and maintenance can be prevented during power failure when the static contacts need to be operated, the transparent insulating partition plate can be supported when the inspection tool is electrified, and the absolute safety of electrified observation can be guaranteed.

The invention discloses a novel removable automated dispensing machine. The novel removable automated dispensing machine comprises a motor case (1), a switch (2) is installed on the right side of themotor case (1), a handle (7) is installed on the motor case (1), a rack (5) is connected with the motor case (1), a dispensing machine body (4) is installed on the rack (5), a glue storage pipe (3) isinstalled on the dispensing machine body (4), a syringe needle (6) is installed at the lower end of the glue storage pipe (3), and wheels (8) are installed below the motor case (1). The novel removable automated dispensing machine has the beneficial effects that design is reasonable, and the structure is simple. An electro-insulating rubber layer is arranged on the handle, and therefore the electric shock probability is greatly reduced, and safety is improved. The design of the wheels is additionally arranged, and therefore machine movement and carrying are more convenient and rapider.

The invention relates to the technical field of power equipment, and particularly discloses a secondary voltage loop abnormality parallelism detection device based on a current injection method, and the device comprises: a first bus loop which comprises a first primary side and a first secondary side; a second bus loop which comprises a second primary side and a second secondary side, wherein thefirst primary side and the second primary side are connected in parallel; a first micro-current transformer which is used for sensing the line current of the first secondary side; and a signal generation loop which comprises an on-off switch and a signal resistor which are connected in series, and the second secondary side is connected with the signal generation loop in series. The invention provides a secondary voltage loop abnormal parallel detection device based on a current injection method, which is used for discovering a secondary voltage abnormal parallel loop under the condition of nopower failure so as to avoid the risk of an electric shock accident and avoid the expansion of an equipment fault range.