34results about How to "With leakage protection function" patented technology

The invention discloses a non-stick overvoltage and under-voltage protector with a leakage protection function. The non-stick overvoltage and under-voltage protector comprises a box body and a control unit, wherein the control unit comprises a power circuit (1), a current sampling circuit (2), a voltage sampling circuit (3), a microprocessor (4), a key processing circuit (5), a working state indicating circuit (6), a magnetic relay driving circuit (7), a magnetic latching relay (8), a leakage mutual inductor (9), an energy-storage capacitor (10) and a chip peripheral circuit (11). According to the non-stick overvoltage and under-voltage protector with the leakage protection function provided by the invention, a power supply is switched on automatically when the power voltage restores to a normal voltage range after an under-voltage protection action is taken, so that the continuity of power supply is ensured, and the power supply quality is ensured; and after a leakage protection action is taken, the power supply is switched on automatically after a fault is cleared and a manual key is pressed for confirming, the power supply continuity is ensured, and personal safety is protected.

A protection socket of electric leakage is prepared as adding a pair of elastic metal plates connected with power supply output end on socket circuit board, setting a pair of active contactors on said metal plates and two pairs of static contactors on power supply output conductor, setting two pairs of static contactors on power supply output conductor to correspond separately to active contactors on power supply input metal and elastic metal sheets for forming two sets of four pairs of switches and adding life-end detection circuit on said circuit board for reminding user timely to replace said protection socket when service life time of said protection socket is ended.

This invention discloses a leakage protection socket with functions of testing the end of life automatically and displaying the test result characterizing in adding a pair of elastic metal plates connected with the output of a supply on the CB of a socket, in which, a pair of moving contactors is set on the metal plates and two pairs of static contactors are set on the output conductor of the supply and correspond to the moving contactors on the input metal plates of the supply and the elastic metal plates to constitute two sets of four pairs of switches, further more, a test circuit for end of life is added on the CB to test the leakage protection automatically and holds back reset of a reset button if it finds out the life of the socket is end when a socket is plugged to the supply and stops the load end of the socket and the output hole of the supply outputting power and reminds users to exchange the socket by a reset indication lamp.

The invention discloses a leakage protection socket for automatically detecting life termination and displaying detecting result, which is characterized in that a pair of elastic metal sheets connected with a power supply output terminal are added on a socket circuit board; the metal sheets are provided with a pair of moving contacts; a power supply conductor is provided with two pairs of static contacts; the two pairs of static contacts on the power supply output conductor respectively correspond to a moving contact on a power supply input metal sheet and a moving contact on the elastic metal sheets so as to form two groups of and four pairs of switches. A circuit for detecting the life termination is added on the circuit board. When the socket is connected with the power supply, the detection function for leakage protection can be automatically operated. If the termination of socket life is found, a reset button is prevented from resetting so that no power supply can be output from a loading terminal of the socket or from an output hole of the power supply. The invention has complete function and good safety and can ensure personal safety of users and electrical apparatus safety indeed.

The invention relates to a Wi-Fi plug with electric leakage and over-current protection functions. The Wi-Fi plug comprises a power line, a power source module, a microcontroller, a Wi-Fi module, an electric leakage detection module, an over-current protection module and an on-off control circuit arranged on the power line. The power source module is connected with the microcontroller and the Wi-Fi module respectively. The electric leakage detection module and the over-current protection module are connected with the microcontroller. The microcontroller is connected with an intelligent household appliance control mainboard and the on-off control circuit. The invention further provides an intelligent household appliance control system. The intelligent household appliance control system comprises the Wi-Fi plug and the intelligent household appliance control mainboard, a wireless router capable of communicating with the Wi-Fi plug, a server connected with the wireless router and a mobile control terminal capable of communicating with the server after having access to the internet. The Wi-Fi plug has the functions of power supply and communication and further has the functions of electric leakage protection and over-current protection, and by means of the intelligent household appliance control system applying the Wi-Fi plug, intelligent household appliances can be controlled in a remote mode and protected in an all-around mode at the same time.

The invention relates to a discharge circuit with a constant voltage and a constant current. An input end of a power inductor is connected with a power supply input end; a switching control end of a switching circuit is connected with a control chip, one switching connection end of the switching circuit is connected with an output end of the power inductor, and the other switching connection end of the switching circuit is grounded; an anode of a freewheel diode is connected with the output end of the power inductor and a cathode of the freewheel diode forms a power supply output end; a sampling connection end of a voltage sampling circuit is connected with the power supply output end, and a sampling output end of the voltage sampling circuit is connected to the control chip; one end of acurrent sampling resistor is grounded, and the other end of the current sampling resistor is connected with an output end of an Atmosphere Pressure Glow Discharge (APGD) excitation source; a first comparison signal input end of a comparison feedback circuit is connected to the other end of the current sampling resistor, a second comparison signal input end of the comparison feedback circuit is connected with a reference voltage, and a feedback signal output end of the comparison feedback circuit is connected to the control chip; and the control chip respectively implements negative feedback regulation of the voltage and the current according to sizes of signals transmitted by the voltage sampling circuit and the comparison feedback circuit. The discharge circuit disclosed by the inventionis stable in discharge voltage and current and small in time delay in the discharging process.

The invention relates to the technical field of power load monitoring, and discloses a semi-intrusive load monitoring system applied to a household power distribution box. The semi-intrusive load monitoring system includes a sensing module, the sensing module includes a plurality of current sensors and air circuit breakers, the current sensors located on a total circuit are connected with an earthleakage protection module, the current sensors located on a branch circuit are connected with a data acquisition module, the data acquisition module is connected with a data processing and controlling module, the data processing and controlling module is connected with a display module and a storage module in a bidirectional mode respectively, and power is supplied by the data acquisition modulethrough a power supply module. The invention further discloses a detection method and specific application. According to the semi-intrusive load monitoring system applied to the household power distribution box, the detection method, and specific application, the real-time judgment of the running status of each air circuit breaker loop electrical appliance in the household power distribution box is realized through the semi-intrusive load monitoring method, and the earth leakage protection function is achieved.

The invention discloses a ground socket, comprising a base and a socket body rotatably arranged on one side of the base. The socket body is provided with a static contact, a movable contact, a first elastic member, an operating mechanism, an interlocking mechanism and a power-off driving device. The interlocking mechanism has a locking state of the linkage operation mechanism and the movable contact, and an unlocking state in which the operation mechanism and the movable contact are disengaged; By linking the driving structure of the power-off driving device with the interlocking mechanism, the base pushes the drive structure to drive the interlocking mechanism to move from a locked state to an unlocked state when the socket body is closed, The ground socket realizes the power-off isolation protection of the ground socket in the unused state, and can also realize the quick power-off protection by manually operating the power-off driving device in the used state of the ground socket, soas to cope with the sudden situation, avoid the electric leakage accident and the electric shock hazard to people, and has the advantages of convenient operation, good practicability, safety and reliability.

The invention discloses a new energy vehicle quick charging pile with an electric leakage protection function. A moisture-proof bottom plate is included. A charging cabinet body is fixedly connected to an upper surface of the moisture-proof bottom plate, a storage battery containing cavity, a charging wire winding cavity and a motor cavity are arranged in the charging cabinet body, a storage battery is fixedly connected to an inner bottom wall of the storage battery containing cavity, and a charging wire winding roller is rotatably connected to the inner wall of the charging wire winding cavity through a ball bearing. According to the new energy vehicle quick charging pile with the electric leakage protection function, an n-shaped fixing frame and a rainproof plate are arranged; rainwatercan be prevented from entering the charging gun containing cavity; by arranging a sealing cover, rainwater can be prevented from entering a touch operation display screen; and by arranging a photovoltaic solar panel, a rain shielding plate and a rain shielding fence plate, the rainwater can be prevented from entering the charging cabinet body, and sunlight can be prevented from directly irradiating the charging cabinet body so that erosion of sunlight or rainwater to the charging cabinet body is reduced, and a normal service life of the charging cabinet body is guaranteed.

The invention provides a protection mechanism and a circuit breaker thereof. The protection mechanism comprises a push rod, and a leakage driving structure and a short circuit driving structure which can drive the push rod to move. The push rod can be mounted inside a circuit breaker in a way which enables the push rod to move back and forth along the axis thereof. The push rod has an initial position at which the push rod does not affect the action of the circuit breaker, and a trigger position at which the push rod triggers the circuit breaker to trip. When leakage occurs, the leakage driving structure drives the push rod to move from the initial position to the trigger position to trip the circuit breaker and break the circuit. When a short circuit occurs, the short circuit driving structure drives the push rod to move from the initial position to the trigger position to trip the circuit breaker and break the circuit. According to the protection mechanism, no matter whether leakage or a short circuit occurs, the circuit breaker can be triggered to trip, and thus, higher safety is achieved. On the basis of the prior art, the function of short circuit protection is achieved by only adding the short circuit driving structure which drives the push rod to move under the condition of a short circuit. The protection mechanism has the advantages of compact structure and low cost.

The invention provides a multifunctional anti-electric-shock water heater. The water heater comprises a shell, a liner, a heat preservation layer, an insulated water inlet pipe and an insulated wateroutlet pipe and is characterized in that the portions, corresponding to each other, of the bottoms of the shell and the liner are provided with two through holes shared by water inlet and outlet pathsrespectively, the heat preservation layer is provided with a water inlet and outlet channel, a vertical composite pipe formed by the water inlet pipe and the water outlet pipe is arranged in the water inlet and outlet channel, the water outlet pipe in the vertical composite pipe extends upwards into the liner, and a water outlet of the upper end of the water inlet pipe in the vertical composite pipe is located on the bottom in the liner. The lower end of the vertical composite pipe is connected with a horizontal water inlet and outlet pipe, and the two ends of the horizontal water inlet and outlet pipe are connected with a water outlet port and a water inlet port respectively. An anti-electric-shock connector is arranged in the horizontal water inlet and outlet pipe, and insulation watercolumns in the vertical composite pipe and the horizontal water inlet and outlet pipe can lower voltage transmitted to the anti-electric-shock connector to the safety voltage or below. A user of the water heater can be protected when other electric appliances leak electricity, and the problem that a ground wire is electrified when the electric water heater leaks electricity can also be solved.

The invention discloses an electromagnetic speed adjusting three-phase asynchronous motor. The electromagnetic speed adjusting three-phase asynchronous motor comprises a three-phase asynchronous motor body, an electromagnetic slip clutch and a speed adjusting controller, wherein the three-phase asynchronous motor body is connected with the electromagnetic slip clutch; the electromagnetic slip clutch is provided with the speed adjusting controller; the three-phase asynchronous motor body is supplied with power through an AC380V three-phase asynchronous motor power source; the speed adjusting controller is supplied with power through an AC220V speed adjusting controller power source. A clutch coil can be protected, and leakage accidents and electric shock accidents are effectively prevented.

The invention discloses a leakage protector for preventing low voltage inverse power transmission. The protector comprises an electromagnetic induction signal generator, a power directional element, an electric signal control loop, and a tripping and disconnecting device, wherein an input port of the electric signal control loop is electrically connected with the electromagnetic induction signal generator, and is electrically connected with an output port of the power directional element, an output port of the electric signal control loop is electrically connected with the tripping and disconnecting device, and an input port of the power directional element is electrically connected with a load line. The leakage protector for preventing the low voltage inverse power transmission disclosed by the invention has the characteristics that 1, the protector has a leakage protection function and a protective function of preventing low voltage inverse power transmission of a user side; 2, the protector has a simple structure and is convenient to install and replace; 3, the practicability is strong, and the safety of the user side and the distribution network overhaul operation is guaranteed; and 4, the input cost is low, the protector is easy to produce, use and popularize, and has a wide application prospect.

The invention discloses a heating washing device used for a toilet. The heating washing device comprises a shell, a first heating part and a liquid storing cavity, wherein the shell is provided with awater inlet end capable of communicating an external water supply source, a water outlet end for delivering out a water body, and a water delivering inner cavity communicating with the water inlet end and the water outlet end; the first heating part is arranged in the water delivering inner cavity for heating the conveyed water body; and the liquid storing cavity can store a scrubbing solution and air, liquid outlet holes are arranged in the liquid storing cavity, the liquid storing cavity is arranged in the shell, and meanwhile, heat emitted by the first heating part can be conducted to theliquid storing cavity, so that after air in the liquid storing cavity expands due to heating, the scrubbing solution is driven to enter the water delivering inner cavity from the liquid outlet holes.According to the design, the principle of thermal expansion and cold shrinkage of air is ingeniously utilized, when the heating washing device heats the outlet water for realizing washing, an appropriate amount of scrubbing solution can be mixed, the man-made operation is not needed, thus the problem that due to the improper use amount of the user, the scrubbing solution needs to be removed by consuming abundant time is solved, and therefore, the use of the user is facilitated.

The present invention designs a magnetic latching relay having an electric leakage protection function. The relay comprises a relay mounting rack, a side-hung door, a LED lamp, a cooling fan, an electric power storage box, a fire alarm, a leakage protector, a magnetic latching relay and a mounting rack. The magnetic latching relay is fixedly installed at one side of the mounting rack, the upper portion of the magnetic latching relay is provided with the electric power storage box, the leakage protector is fixedly installed at the other side of the mounting rack, the magnetic latching relay is electrically connected with the leakage protector, and the fire alarm is fixedly installed at one side of the top portion of the mounting rack. The present invention further provides the control circuit of the magnetic latching relay having the electric leakage protection function. The circuit comprises a power supply circuit and a control circuit which are mutually connected; and the executed control circuit comprises a driving circuit, the magnetic latching relay and a leakage determination circuit; the leakage protector is eclectically connected with the magnetic latching relay to allow the magnetic latching relay to have an electric leakage protection function so as to avoid fire hazard accidents or circuit paralysis.

The invention discloses an electric water heater with an electric leakage protection function. The electric water heater comprises a box body, a first bolt and a second bolt; a hanging groove is formed in the rear side of the box body; a box cover is arranged in the front side of the box body; the first bolt penetrates the box cover and is connected with the box body; a water tank is arranged in the box body; a segmented heating chamber and a rapid heating chamber are arranged in the water tank; the rapid heating chamber is arranged under the lowermost segmented heating chamber; the second bolt penetrates through a connecting block and is connected with the box body; the connecting block is arranged in the left side and the right side of the water tank; and openings are formed in the rightside of the segmented heating chamber and the right side of the rapid heating chamber. The electric water heater with the electric leakage protection function is provided with the box cover and the box body, the rearmost ends of the left and right sides of the box cover and the rearmost end of the water tank are located on the same vertical plane, the first bolt is screwed to be taken down, the box cover is separated from the tank body, parts on the left and right sides of the water tank are exposed, parts are convenient to detach for maintenance, and use is more convenient.

The invention discloses an electric endoscope anastomat with an electric leakage protection function. The electric endoscope anastomat comprises an anastomat body, an adjusting mechanism and a tube body structure, wherein a handle is arranged below the anastomat body, a storage battery is installed in the handle, a miniature circuit breaker is installed at the top of the storage battery, the adjusting mechanism is arranged at the left end of the anastomat body, the tube body structure is arranged on the left side of the anastomat body, the left end of the tube body structure is rotatably connected with a rotating head through a third rotating shaft, and a movable nail bin is arranged below the left end of the rotating head. The electric endoscope anastomat with the electric leakage protection function is provided with the miniature circuit breaker, the miniature circuit breaker is connected in a power supply circuit of the storage battery, when the anastomat body breaks down and electric leakage occurs when the tube body structure is in contact with liquid of a patient, the miniature circuit breaker detects the abnormality in the circuit in time and disconnects a power supply in time, and the electric leakage situation is prevented.