57results about How to "Ensure safe use of electricity" patented technology

The invention relates to an electrical fire monitoring system which comprises an optical fiber temperature monitoring alarm device, a residual current type electrical fire monitoring detector and an alarm monitoring host. The system also comprises a data concentrator, and the data concentrator is used for respectively receiving monitoring information from the optical fiber temperature monitoring alarm device and the residual current type electrical fire monitoring detector and uploading the monitoring information to the alarm monitoring host, through the Ethernet or a local network. The alarm monitoring host communicates with a monitoring workstation in real time through the Ethernet or local network or a GPRS (General Packet Radio Service) wireless network. The optical fiber temperature monitoring alarm device and the residual current type electrical fire monitoring detector are respectively used for monitoring the temperature information of power equipment and the residual current information of each return circuit and transmitting the monitoring information to the data concentrator. The data concentrator uploads the monitoring information to the monitoring host through the Ethernet or local network after processing the monitoring information, and the monitoring host displays whether the power equipment is overheated and the residual current in the return circuit exceeds limits or not in real time and gives an early warning or alarm when an exception occurs.

The invention provides a double temperature-sensing power-off circuit protection structure, comprising two independently working temperature-sensing power-off devices arranged between two terminals ofa return circuit, a thermal sensing tripping device and a thermal breaking device. A contact striking flake of the thermal sensing tripping device is heated and deformed to reversely bend to trip outin order to realize interruption under the conditions of overload current, overheating circuits or excess high temperature of environment. Besides, when the thermal sensing tripping device fails to respond, respond late or repetitively powers off and the temperature of the return circuit continuously rises after powering on under the conditions of overload current, overheating circuits or excesshigh temperature of environment, a low-melting point block of the thermal breaking device is heated to be melted and broken in order to open the return circuit and realize interruption. In the invention, the two independently working temperature-sensing power-off devices respectively sense temperature, have a double temperature-sensing power-off effect, and the return circuit can be temporarily powered off, powered on again or completely powered off, thereby avoiding dangers of overheating circuits or short circuit of electric wires.

The invention relates to the field of low-voltage power supply system grounding detection. Ensuring safety grounding of equipment is an important technical measure to ensure safety in utilization of electric power. The invention aims at providing a safety grounding all-purpose online detector. The safety grounding all-purpose online detector is characterized in that a low voltage is applied to safety grounding through utilization of a transformer secondary winding, the safety grounding all-purpose online detector and user earth leakage protection are combined to form composite dual earth leakage protection to be used for detecting a safety grounding effect of a user ground lead in a comprehensive mode, the safety grounding all-purpose online detector has a comprehensive detection function of detecting a correct connection method, a grounding current, a grounding resistor and the like of safety grounding, the safety grounding all-purpose online detector can detect the safety grounding of electricity supplying, electricity utilization, commercial residential buildings, residence communities, independent residents and the like, and can detect the safety grounding of lightning protection equipment, electric equipment and the like, and the safety utilization of the electric power is guaranteed. The safety grounding all-purpose online detector has the advantages of being simple in circuit, low in cost, easy to install and convenient to operate, and has much practical value.

The invention discloses a control system and a control method of a dehumidifier of a wind turbine generator. The control system comprises a first sensor, a second sensor, a controller, a storage battery and a inverter, wherein the first sensor is used for acquiring operation parameters of power generation equipment in the wind turbine generator; the second sensor is used for acquiring the feedbackinformation of the dehumidifier in the wind turbine generator; the controller is used for acquiring the operation parameters and the feedback information, a power supply starting and stopping instruction and an electric energy storage instruction are generated according to the operation parameters and the feedback information; the storage battery is used for storing electric energy generated by the power generation equipment according to the electric energy storage instruction, or outputting the electric energy to the dehumidifier according to the power supply starting and stopping instruction; the input end of the inverter is connected with the controller, the output end of the inverter is connected with the dehumidifier, the connection of the dehumidifier and the power generation equipment and/or the storage battery are connected or disconnected according to the power supply starting and stopping instruction, According to the system and the method, the ambient humidity working by the dehumidifier is monitored in real time, closed-loop control is carried out on the dehumidifier according to the real-time monitoring data, so that the safety is improved integrally, and the problemsof short service life and resource waste caused by over-use are avoided.

An electric circuit protector of double temperature induction cut-off type is featured as setting contact flexure strip and thermal cut-off unit between two contact terminals on circuit loop to form two temperature induction cut-off units being operated independently, bending contact flexure strip towards opposite direction for tripping it off by deformation caused by heat to cut-off circuit first or otherwise rising temperature up continuously to melt fuse block to cut off circuit when current is overloaded and circuit is overheated.

The invention belongs to the technical field of electronics, and relates to a non-contact shutdown reminding device for a high-power electrical appliance. The device is composed of a small industrial frequency transformer (inductive probe), a full bridge rectifier, a high-resistance operational amplifier, a level phase inverter circuit, a circulation timing circuit, a delay and DC amplification circuit, a buzzer and a power supply, the device is characterized in that the inductive probe uses the primary of the small industrial frequency transformer, the full bridge rectifier uses a Schottky diode, the high-resistance operational amplifier uses CA3140, and the circulation timing circuit uses CD4060. Based on a principle of refusing to change structure and inner circuits of the high-power electrical appliance, the device, being within 35cm far away from the high-power electrical appliance, can detect whether the high-power electrical appliance is working, and can actively send out shortly changing beep sound at each 15 minutes to remind users of shutting down the power supply of the high-power electrical appliance, so that electricity safety and electrical energy saving are both implemented.

The invention provides an intelligent double-control creep cutting alarm which has characteristics in that: including a metal casing, an intelligent detection encoder, a switch electrical source, a creep breaker; the intelligent detection encoder input port connects with a power network input port; the intelligent detection encoder input port also connects with a creep voltage collecting line; the creep voltage collecting line connects with the metal casing, and connects with a distribution equipment drain electrode through the metal casing; the switch electrical source is series connected between the intelligent detection encoder input port and power network input port for supplying power to the intelligent detection encoder; the creep breaker is series connected between the power network input port and output port; the intelligent detection encoder output port connects with the creep breaker; the creep breaker controls opening/cutting of the power network input port and output port according with output signal of the intelligent detection encoder. The alarm detects power network safety state according with creep voltage, and is used for power supply environment characteristic in field operation, ensures using electricity safely in field operation.

The invention discloses a dual temperature sensing cutoff circuit protective device. Two independently-operating temperature sensing cutoff devices, i.e. a thermal induction tripping device and a hot melting breaking device, are arranged between two terminals of a circuit loop; the cutoff is realized by the deformation by being heated and reverse bending tripping of a contact spring of the thermal induction tripping device under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; or because the current is overloaded, the circuit is overheated or the ambient temperature is overhigh, when the thermal induction tripping device has no reaction and slow reaction or repeated cutoff and electrifying, and the temperature of the circuit loop continuously rises, the cutoff can be realized after the easily-melt alloy of the hot melting breaking device is melt and broken by being heated to form an open circuit of the circuit loop. The two independently-operating temperature breaking devices respectively and independently sense the temperature, have dual temperature sensing breaking functions and enable the circuit to be cut off in a short time, be electrified again or completely cut off so as to avoid the danger caused by the circuit overheat or short circuit.

The invention relates to the technical field of rat control, and particularly relates to a rat-proof system used for a power distribution cable and a laying method thereof. The structure of the rat-proof system comprises an electric well and a power distribution room which is connected with the electric well. The electric well comprises a filler which is arranged in the internal cavity of the electric well and used for wrapping and burying a cable, a through hole which is arranged on the wall surface of the electric well and used for penetrating of the cable and steel wire bodies which fill the through hole and are used for plugging the gap between the cable and the wall of the through hole. The through hole is also communicated with an electric wire slot. The electric wire slot is provided with iron wire cotton in a filling way and is communicated to the power distribution room. A smooth rat baffle is inserted on the door of the power distribution room. According to the rat-proof system, the gap positions are comprehensively filled so that the rats can be intercepted from entering the power distribution cable, the rats can be effectively prevented from damaging the cable and thus safe power utilization of the power distribution cable can be guaranteed. The laying method of the rat-proof system comprises the steps of cable lead-in, cable wrapping and burying, steel wire body filling, iron wire cotton filling and inserting of the rat baffle. The laying method has the advantages of being convenient and easy so as to enhance the rat-proof efficiency.

The invention discloses a circuit protection structure with double temperature induction switching-off, which comprises a cover body, a thermal induction trip device, a thermal fusion switching-off device and a seat body. Two temperature induction switching-off devices which run independently are arranged between the two terminals of a circuit loop. At the time of current overload, circuit overheating or overhigh environmental temperature, a contact spring piece of the thermal induction trip device is heated, deformed, bent in a reverse direction, tripped and switched off (OFF); at the time ofthe current overload, the circuit overheating or the overhigh environmental temperature, the fusible alloy of the thermal fusion switching-off device is fused and ruptured when no reaction, an incomplete reaction or repeated OFF and ON occur in the thermal induction trip device and the temperature of the circuit loop is continuously risen, and the complete OFF of the circuit loop is ensured. Thetwo independent temperature induction switching-off devices have double temperature induction switching-off effects and ensure the aim of safe power utilization.

The invention provides a power supply plug-type integral Internet of things power parameter monitoring device. The power supply plug-type integral Internet of things power parameter monitoring deviceis characterized in that power parameter monitoring modules and wireless communication modules are integrated in a conventional power supply plug to realize measurement of power parameters and a one-to-many BLE (Bluetooth Low Energy) wireless communication manner. The power supply plug-type integral Internet of things power parameter monitoring device comprises a front shell, a power supply switching module, power parameter monitoring modules, wireless communication modules, power supply plug metal inserting sheets, a power connection cable and a back shell, wherein the power supply plug metalinserting sheets are fixed on the front shell; the power supply switching module, the power parameter monitoring module, the wireless communication module are arranged in a space enclosed by the front shell and the back shell; one end of each metal inserting sheet extends out of the front shell; the power connection cable for connecting the power parameter monitoring module and the wireless communication module extends out of the enclosed front shell and the back shell; the wireless communication module comprises a wireless multi-node communication circuit, and power parameters measured by the plurality of power parameter monitoring modules can be read, displayed and stored in real time by one piece of wireless data receiving end equipment simultaneously through the wireless multi-node communication circuit.

The invention relates to a high-voltage distribution box of a pure electric commercial vehicle. An electric-controlled high-voltage DC contactor is used as an input terminal; an electric-controlled air breaker is used as an output terminal; a high-voltage distribution controller is used for controlling the input and output of the high voltage according to instructions; and a special electricity meter for the electric vehicle is arranged for respectively displaying the total energy consumption of the vehicle, the energy consumption of a driving motor, the energy consumption of an air conditioner, the energy consumption of an electric-assisting steering oil pump, the energy consumption of an electric air compressor and the like. The high-voltage distribution box in the invention can automatically distribute the power to the entire electric vehicle, ensure the safety utilization of power, and easily update the control parameters of the entire vehicle.

The invention discloses a vacuum circuit breaker which comprises a contact arm, a Rogowski coil mutual inductor, an intelligent overcurrent tripping device, a tripping mechanism, an infrared transmitter and an infrared receiver, wherein the intelligent overcurrent tripping device comprises a CPU; the Rogowski coil mutual inductor is arranged in the contact arm, and the output end of the Rogowski coil mutual inductor is connected with the intelligent overcurrent tripping device by a signal wire; collected current signals and voltage signals are transmitted to the intelligent overcurrent tripping device in real time after being processed by the CPU; the output end of the intelligent overcurrent tripping device is also connected with the infrared transmitter, a communication interface of theinfrared receiver is connected with a supervisory computer by an output signal wire, and the current signals and the voltage signals transmitted by the infrared transmitter are transmitted to the supervisory computer. The invention combines the vacuum circuit breaker and the mutual inductor into a whole and can effectively reduce the volume of a power distribution cabinet, is simple and convenientto maintain the mutual inductor, can realize long-distance telemetering and remote control and ensure the safe electricity utilization of loads.

The invention discloses an indoor wall surface drying device comprising two movable bases. The upper ends of the bases are provided with two support rods of the same structure, the support rods are provided with threaded holes, the threaded holes of one support rod are provided with a first drying plate, a second drying plate is mounted on the right side face of the first drying plate, a third drying plate is mounted on the right side face of the second drying plate, the third drying plate is fixed on the other supporting rod, the first drying plate, the second drying plate and the third drying plate are provided with ventilation openings, the ventilation openings are provided with shutter leafs, and electric heating wires and fans are arranged in the three drying plates. Since the deviceuses the two support rods of the same structure to support the three drying plates, the device can be moved to the wall surface to dry the wall surface. The fans are additionally arranged so that aircirculation can be accelerated, and wall drying can be further promoted. In addition, the device is movably installed and combined together, so that movement of the device is facilitated.

The invention relates to the technical field of power utilization, and specifically relates to an intelligent socket with an electric leakage protection function and an intelligent control system. Theintelligent socket with the electric leakage protection function comprises an electrical appliance insertion end, a power supply module, an MCU, a relay, a self-checking module and an electric leakage detection module. The intelligent socket with the electric leakage protection function and the intelligent control system solve a problem that the intelligent socket at present does not independently have the functions of electric leakage self-checking and electric leakage detection, and can cut off the power supply on the detected electric leakage at the same time, thereby increasing the integration and intelligentization of the socket, and providing a guarantee for safe power utilization of electrical equipment.

The invention discloses a dual temperature sensing cutoff circuit protective device. Two independently-operating temperature sensing cutoff devices, i.e. a thermal induction tripping device and a hot melting breaking device, are arranged between two terminals of a circuit loop; the cutoff is realized by the deformation by being heated and reverse bending tripping of a contact spring of the thermal induction tripping device under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; or the phenomena that the thermal induction tripping device has no reaction and slow reaction or the repeated cutoff occurs under the condition that the current is overloaded, the circuit is overheated or the ambient temperature is overhigh; and the cutoff can be realized after the easily-melt alloy of the hot melting breaking device is melt and broken by being heated to form an open circuit of the circuit loop when the temperature of the circuit loop continuously rises by electrifying. The two independently-operating temperature breaking devices respectively and independently sense the temperature, have dual temperature sensing breaking functions and enable the circuit to be cut off in a short time, be electrified or completely cut off so as to avoid the danger caused by the circuit overheat or short circuit.

The invention belongs to the field of power industry, relates to computing of an electrical load, and in particular to a sampling method for residential-electrical load sample data based on cloud computing. The sampling method includes the following steps of a, community sample selecting, wherein community sample selecting needs to meet the following conditions; b, single home sample selecting, wherein single home sample selecting needs to meet the following conditions; c, sampling time and sampling time point selecting. Compared with the prior art, the sampling method has the advantages that according to the sampling method for the residential-electrical load sample data based on cloud computing, the characteristics of existing residential electricity are considered from various angles, electrical load computing can be further effectively obtained, the accuracy of the computing result of the electrical load is greatly increased accordingly, and a guarantee is provided for safe electricity utilization.

The invention discloses a high-voltage electric cabinet with an arc detection device. The cabinet comprises a cabinet body, a mounting plate is arranged in the cabinet body; the mounting plate is usedfor mounting and fixing the electric appliance element; an electric arc detection device is arranged at the inner top of the cabinet body; the arc detection device comprises an arc light sensor and amoving assembly, the arc light sensor is arranged in the cabinet body through the moving assembly, the moving assembly can move the arc light sensor to the position in front of the mounting plate, meanwhile, the arc light sensor is further connected with a damping assembly, and the damping assembly can protect the arc light sensor moving rapidly. By arranging the movable arc light sensor, timelyand effective arc generation detection is guaranteed, safe power utilization, especially safety of large-scale industrial power utilization, is guaranteed, and potential safety hazards are reduced.

The invention relates to a connector adopted by a vertical elbow bus duct and a processing technology thereof, and belongs to the technical field of power distribution equipment. The connector adoptedby the vertical elbow bus duct comprises a transverse conductor, a vertical conductor, a transverse shell, a vertical shell and an L-shaped connecting plate, wherein the transverse conductor and thevertical conductor are fixedly connected through bolts, the transverse shell and the vertical shell are respectively arranged outside the transverse conductor and the vertical conductor, and the transverse shell and the vertical shell are fixedly connected through the L-shaped connecting plate. According to the invention, the connector is adopted at a welding part, the connection is completed through the double-side contact special connector, the two conductors are connected through the high-strength torque bolts, enough contact area and reliable electrical connection are ensured, and dual purposes of loose prevention and insulation are achieved by using a bus body. The connector can effectively ensure safe power utilization.

The invention relates to plug pins and plug bushes, particularly to a conical plug pin and a plug bush for a socket and a plug, and solves the problems that the conventional plug pin is in imprecision contact with the plug bush, high in contact resistance, small in effective contact area and easy to heat to be burned. The conical plug pin and the plug bush for the socket and the plug comprise a plug bush part and a plug pin part, wherein the plug bush part comprises a conical sleeve and a disk-shaped connecting plate; the plug pin part comprises a conical pin, a disk-shaped positioning table and a cylindrical connecting head; the thinner end of the conical sleeve is closed, and the thicker end of the conical sleeve is open; the center of the upper plate surface of the disk-shaped connecting plate is fixed with the thinner end surface of the conical sleeve to form a whole body; the thinner end of the conical pin is movably inserted and connected with the cavity of the conical sleeve; the center of the lower table surface of the disk-shaped positioning table is fixed with the thicker end face of the conical pin to form a whole body; the lower end face of the cylindrical connecting head is fixed with the center of the upper table surface of the disk-shaped positioning table to form a whole body. The conical plug pin and the plug bush disclosed by the invention can be applied to various electricity consuming occasions.

The invention discloses a household electricity intelligent monitoring system based on STM32, and belongs to the technical field of computers. The design of the invention aims to make up the defects of a household power consumption monitoring system, the used electric appliances and the intelligent electric meter are connected together in a centralized control mode, and the data is mastered in time through the intelligent electric meter. Implementation of the design comprises a software part and a hardware part. The hardware part mainly needs to consider the contents in the aspects of a bottom-layer intelligent electric meter, an intelligent monitoring platform and ZigBee wireless communication. A TFT-LCD hardware circuit, a STM32 minimum system, and internal and external memory interfacesFLASH and SDIO of the device are all included in the intelligent monitoring platform. The software part is completed by virtue of an Android system, so that the functions of household appliance control, data display, data storage, interface login and the like can be realized, and the design of the household electricity intelligent monitoring system is further realized. The system is mainly applied to household intelligent power utilization monitoring facilities.